CN115950059B

CN115950059B - Device and method for judging and alarming channeling of working condition switching valve of ground source heat pump system

Info

Publication number: CN115950059B
Application number: CN202310017729.9A
Authority: CN
Inventors: 张建忠; 朱锡冬; 沈乡城; 陈铁; 周斌; 石露露; 张滢; 宋海兵
Original assignee: Nanjing Olympic Sports Construction And Development Co ltd; Nanjing Architectural Design & Research Institute Co ltd; Nanjing Yangtze River Urban Architectural Design Co Ltd
Current assignee: Nanjing Architectural Design & Research Institute Co ltd; Nanjing Olympic Sports Construction And Development Co ltd; Nanjing Yangtze River Urban Architectural Design Co Ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2024-01-05
Anticipated expiration: 2043-01-06
Also published as: CN115950059A

Abstract

A device and a method for judging and alarming channeling of a working condition switching valve of a ground source heat pump system belong to the field of building energy conservation research. The system comprises a valve group, a ground source heat pump unit, a ground source water pump, a ground source water collector, a cold and hot water pump, an air conditioner cold and hot water collector and an air conditioner cold and hot water collector, wherein the internal structure of the valve group is composed of a valve, a sensor, a drain pipe, a drain valve and a control box. The judging method and the device are characterized in that the water system switching valve is a valve group consisting of double valves, and a section of drainage pipe is added between the two valves to form a judging and alarming device capable of judging whether the valve leaks water or not by matching with a sensor and accessories. The invention has the advantages of high-efficiency system operation, better energy system stability and reliability, and the like.

Description

Device and method for judging and alarming channeling of working condition switching valve of ground source heat pump system

Technical Field

The invention relates to a ground source heat pump system, in particular to a device and a method for judging and alarming water channeling of a working condition switching valve of the ground source heat pump system, and belongs to the field of building energy conservation research.

Background

The ground source heat pump system is used as a new heating ventilation air conditioning technology utilizing renewable energy sources, and is an efficient energy-saving technology in the building field.

The shallow geothermal energy is used as renewable energy, and the geothermal energy heat pump technology is used for heating, refrigerating and preparing domestic hot water for buildings, so that the consumption of traditional fossil fuel can be reduced, and the energy utilization structure can be adjusted.

At present, the conversion between winter and summer heat supply and refrigeration of the ground source heat pump system is generally realized by changing the flow of source side water and air conditioner water through valves arranged on a water system, the principle of the ground source heat pump system is shown in a figure 1, two valves are respectively arranged between a ground source water supply/return side pipe section and an air conditioner water supply/return side pipe section, eight valves (valves V1-V8 in the figure 1) are totally arranged, and the switching and efficient operation of the ground source heat pump can be realized by the switching combination of 8 valves (the refrigeration working conditions are opened V1, V2, V7 and V8, and closed V3, V4, V5 and V6, and otherwise, the heating working conditions are subjected to opposite steps.

Currently, for a ground source heat pump system, the following technical problems still exist in actual operation and need to be solved:

1. the operation and maintenance of the machine room are generally weak.

The artificial operation and maintenance is limited by the visual monitoring instrument and the signal feedback of the accessed automatic control system, and the detection capability of pipe sections and valve accessories which are not counted and still play an important role is weak.

2. If the valve to be closed is not closed when the working condition is switched, the air conditioner water and the ground source water which should be cut off can be leaked, so that the energy loss and waste at the demand side are caused, the energy efficiency of the ground source heat pump system is reduced, the energy efficiency of the ground source heat pump unit and the water pump is further reduced, and the water temperature at the demand side of a user is difficult to ensure.

3. When the working pressure of the air conditioner side far exceeds the working pressure of the ground source side water system, the ground pipe heat exchange system is easily damaged by the channeling of air conditioner water and ground source water.

4. The valve cannot be found out in time to be closed untight.

The reasons for the untight closing of the eight valve working conditions during the conversion are more, including: the valve quality problem or improper selection, misoperation of workers, long-time abrasion and the like are common in engineering, but the valve is generally not easy to find and check in early stage, when the energy supply and water supply temperature are obviously influenced, a lot of energy resources are wasted, and the damage to the ground source side pipes, the valves and the meters can be caused by water channeling.

Disclosure of Invention

In order to solve the technical problems, the invention provides a water channeling judging and alarming device of a ground source heat pump air conditioner working condition conversion valve bank, which comprises a ground source heat pump unit, a ground source water pump, a ground source water collector, a ground source water separator, a cold and hot water pump, an air conditioner cold and hot water collector, an air conditioner cold and hot water separator and 8 on-off devices;

The ground source heat pump unit comprises a condenser and an evaporator, wherein the condenser comprises a condenser water inlet and a condenser water outlet, and the evaporator comprises an evaporator water inlet and an evaporator water outlet;

the 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the ground source water collector is divided into two pipelines after passing through a ground source water pump through pipelines, and one pipeline is connected to a condenser water inlet of the ground source heat pump unit after passing through the 1 st on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit through the 3 rd on-off device; the water outlet of the condenser of the ground source heat pump unit is connected with a ground source water separator and an air conditioner cold and hot water separator through a pipeline through a 2 nd on-off device and a 6 th on-off device respectively;

the cold and hot water collector of the air conditioner is divided into two pipelines after passing through a cold and hot water pump through pipelines, and one pipeline is connected to a condenser water inlet of the ground source heat pump unit after passing through a 5 th on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit through a 7 th on-off device; the water outlet of the evaporator of the ground source heat pump unit is connected with a ground source water separator and an air conditioner cold and hot water separator through a pipeline through a 4 th on-off device and an 8 th on-off device respectively;

the on-off device is a valve group, the valve group comprises two valves, namely a first valve 16, a second valve 17, a drain pipe and a drain valve, the two valves are connected in series, namely the first valve 16 and the second valve 17 are connected in series, one end of the drain pipe is connected with the drain valve, and the other end of the drain pipe is connected with a pipeline between the first valve 16 and the second valve 17;

The valve groups have the same structure, and the 8 on-off devices are respectively a first valve group 1, a second valve group 2, a third valve group 3, a fourth valve group 4, a fifth valve group 5, a sixth valve group 6, a seventh valve group 7 and an eighth valve group 8.

According to the invention, on one hand, by adding a section of water pipe (a water drain pipe or a signal pipe) between the switching valve group, namely the two valves, the first valve 16 and the second valve 17, when the first valve 16 and the second valve 17 are closed and the water drain valve is opened, if water flow occurs in the water drain valve, the water on the air conditioner side and the water on the ground source side can be judged to be mutually channeling, so that the technical problem that the water channeling condition of the air conditioner water and the ground source water which are required to be separated cannot be judged when the ground source heat pump is switched over Xia Gongkuang is skillfully solved.

When the first valve 16 and the second valve 17 are opened and the drain valve is closed, if the drain valve generates water flow, the damage of the drain valve can be judged.

On the other hand, a drain valve is further arranged on the drain pipe added between the first valve 16 and the second valve 17, when leakage occurs due to damage of the first valve 16 and/or the second valve 17, the drain valve can be opened in an emergency mode to release pressure, and further damage to ground source side pipes, valves and meters of the ground source heat pump system due to water channeling and pressure difference between air-conditioning water and ground source water can be prevented.

Thirdly, each valve group is provided with 2 valves, namely a first valve 16 and a second valve 17, so that the probability of water channeling on the water side of the air conditioner and the water side of the ground source is reduced, the service life of the ground source heat pump system is prolonged, and the problem that the heat exchange system of the ground pipe is easily damaged when the working pressure of the air conditioner side far exceeds the working pressure of the water system on the ground source side is solved;

fourth, each valve group is provided with 2 valves, a water drain pipe or a signal pipe and a water drain valve, and under the combined action of the two valves, the phenomenon that water channeling of air conditioner water and ground source water occurs is avoided, so that the problem that energy consumption on the demand side is lost and waste is caused by water channeling of air conditioner water and ground source water, the energy efficiency of a ground source heat pump system is reduced, the energy efficiency of a ground source heat pump unit and a water pump is further influenced, and the water temperature on the demand side of a user is difficult to ensure is solved.

Fifth, each valve group is provided with 2 valves and a drain pipe or a signal pipe, so that the difficult problem that the valves cannot be timely found to be not tightly closed is solved, and energy resources are avoided.

Sixth, each valves is provided with a first valve 16, a second valve 17 and a drain valve, when any valve in the valves is damaged, the valves can be replaced by closing the other 2 valves and correspondingly closing the ground source water pump or the cold and hot water pump under the condition that the whole system is not stopped, so that the difficulty that the system operation is required to be stopped due to the replacement of the valves is solved, the constant temperature of a resident house or a whole building can be kept during the process of replacing accessories of the ground source heat pump system, and the stability and the reliability of the ground source heat pump system are improved.

Further, each valve group further comprises a sensor, an automatic control line and a controller, wherein the sensor is arranged in the drain pipe; the sensor is connected with the controller through an automatic control line in an electric signal manner; the sensor is a pressure sensor and is used for detecting whether water flow pressure exists in the drain pipe pipeline or not; when the sensor detects that the water flow pressure exists in the water drainage pipe, the sensor signal is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding.

Further, the controller is electrically connected with the alarm, and when water channeling occurs, the controller alarms through the alarm.

According to the invention, whether the water flow pressure exists in the water drainage pipe is sensed by the related sensor, so that the controller is informed to carry out water channeling reminding, the complexity of judging the water channeling of the working condition conversion valve set of the ground source heat pump air conditioner is reduced, and the intellectualization of the ground source heat pump system is improved.

Further, the drain valve is an electric valve and is electrically connected with the controller through an automatic control line;

when the sensor does not detect the water flow pressure in the water drain pipe, the sensor signal is fed back to the controller through the automatic control line, the controller gives an opening instruction to the drain valve through the automatic control line, and the drain valve opens the valve.

When the sensor detects that the water flow pressure exists in the water drain pipe, a sensor signal is fed back to the controller through the automatic control line, the controller gives a closing instruction to the drain valve through the automatic control line, and the drain valve closes the valve.

Through the detection to the sensor whether there is rivers pressure in to the drain pipe pipeline, send the signal to the controller, the controller is based on the signal of detecting, and synchronous the giving of giving the instruction of opening or closing is opened or is closed the valve for the drain valve, and concretely speaking, when the sensor does not detect there is rivers pressure in the drain pipe pipeline, the sensor signal feeds back to the controller through the automatic control line, and the controller gives the instruction of opening for the drain valve through the automatic control line, and the valve is opened to the drain valve.

The difficult problem that the manual work is difficult to judge whether the drain valve is in an open state or in a closed state is solved, the difficult problem that common residents cannot know whether the valve is at the bottom or is closed is solved, and the operation difficulty of the residents is reduced.

And the problem that the ground pipe heat exchange system is easily damaged due to the channeling of air-conditioning water and ground source water caused by misoperation is solved.

Meanwhile, the difficult problem that the artificial valve is not tightly closed is solved.

Further, each valve group is a linkage device, namely, the first valve 16, the second valve 17 and the drain valve are linkage electric valves, the first valve 16 and the second valve 17 are connected with a controller through automatic control lines in an electric signal manner, when the controller gives an opening instruction to the first valve 16 and the second valve 17, the controller gives a closing instruction to the drain valve in a linkage manner, the first valve 16 and the second valve 17 are opened, and the drain valve is closed; when the controller gives a closing instruction to the first valve 16 and the second valve 17, the controller gives an opening instruction to the drain valve in a linkage way, the first valve 16 and the second valve 17 are closed, and the drain valve is opened.

Through the coordinated control of the first valve 16, the second valve 17 and the drain valve, the operation difficulty that a common resident cannot know whether the valve is opened or closed at the bottom is further solved, and the difficulty of resident operation ground source heat pump pipe valve switching is reduced.

Further, the sensor is a water flow sensor; each of the valve sets,

when the first valve 16 and the second valve 17 are opened and the drain valve is closed, if the sensor detects that water flow exists in the drain pipe, a sensor signal is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

If the first valve 16 and the second valve 17 are opened, and meanwhile, the drain valve is opened, and the controller carries out operation error reminding; if the sensor detects that water flow exists in the drain pipe, the sensor signal is fed back to the controller through the automatic control line, and the controller carries out water leakage reminding;

when the first valve 16 and the second valve 17 are closed and the drain valve is opened, if the sensor detects that water flow exists in the drain pipe, a sensor signal is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

if the first valve 16 and the valve are closed and the drain valve 20 is closed, the controller carries out operation error reminding; if the sensor detects that water flow exists in the drain pipe, a sensor signal is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding.

Through the linkage control of the first valve 16, the second valve 17, the drain valve and the sensor, the difficulty of switching the ground source heat pump pipe valve by resident operation is reduced, and the difficulty that whether air conditioner water and ground source water send channeling or not can not be judged and early warned due to the fact that resident forgets to open or close the drain valve is solved.

Further, when the ground source heat pump system works in summer, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened simultaneously, namely the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8, the first valve 16 and the second valve 17 of each valve bank in the four valve banks are opened, and the drain valve is closed;

The third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are closed at the same time, namely the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6, the first valve 16 and the second valve 17 of each valve bank in the four valve banks are closed, and the drain valve is opened;

the high-temperature medium takes the ground source water pump as a power source, and flows through the ground source water collector, the ground source water pump, the condenser of the ground source heat pump unit, the ground source water separator and the shallow surface heat exchange source measurement to and fro in a circulating way; the low-temperature medium takes the cold and hot water pump as a power source, and flows through the cold and hot water collector of the air conditioner, the cold and hot water pump, the evaporator of the ground source heat pump unit, the cold and hot water separator of the air conditioner and the heat exchange source measurement of the end user to circulate and reciprocate.

When the ground source heat pump system works in summer, the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are closed at the same time, namely the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6, the first valve 16 and the second valve 17 of each valve bank are closed, and the drain valve is opened; by judging whether the drain valve of each valve bank of the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 leaks or not, whether the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 or the sixth valve bank 6 has the water channeling risk or not can be judged.

Meanwhile, each valve group is provided with two valves, so that the difficulty that the ground pipe heat exchange system is damaged due to water channeling caused by damage or untight closing of one valve is solved.

Further, when the working condition of the ground source heat pump system is in winter, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed at the same time, namely the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8, the first valve 16 and the second valve 17 of each valve bank in the four valve banks are closed, and the drain valve is opened;

the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are opened simultaneously; namely a third valve bank 3, a fourth valve bank 4, a fifth valve bank 5 and a sixth valve bank 6, wherein a first valve 16 and a second valve 17 of each of the four valve banks are opened, and a drain valve is closed;

the low-temperature medium takes a ground source water pump as a power source, and flows through a ground source water collector, the ground source water pump, an evaporator of a ground source heat pump unit, the ground source water separator and a shallow surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump as a power source, and flows through the cold and hot water collector of the air conditioner, the cold and hot water pump, the condenser of the ground source heat pump unit, the cold and hot water separator of the air conditioner and the heat exchange source measurement of the end user to circulate and reciprocate.

When the ground source heat pump system works in winter, whether the water leakage risk exists in the first valve bank 1, the second valve bank 2, the seventh valve bank 7 or the eighth valve bank 8 can be judged by judging whether water leakage occurs in the drain valve of each of the four valve banks of the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8.

Further, the sensor (18) is a pressure gauge, or a flow meter, or a water flow indicator.

The invention also provides a water channeling judging method of the ground source heat pump air conditioner working condition conversion valve bank, which comprises a ground source heat pump unit, a ground source water pump, a ground source water collector, a ground source water separator, a cold and hot water pump, an air conditioner cold and hot water collector, an air conditioner cold and hot water separator and 8 on-off devices;

the 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the on-off device is a valve group, the valve group comprises a first valve 16, a second valve 17, a drain pipe and a drain valve, the first valve 16 and the second valve 17 are connected in series, one end of the drain pipe is connected with the drain valve, and the other end of the drain pipe is connected with a pipeline between the first valve 16 and the second valve 17;

the valve groups have the same structure, and the 8 on-off devices are respectively a first valve group 1, a second valve group 2, a third valve group 3, a fourth valve group 4, a fifth valve group 5, a sixth valve group 6, a seventh valve group 7 and an eighth valve group 8;

the method comprises the following steps:

s1, when a ground source heat pump system works in summer, a first valve bank 1, a second valve bank 2, a seventh valve bank 7 and an eighth valve bank 8 are opened at the same time, namely, a first valve 16 and a second valve 17 of each of the four valve banks are opened, and a drain valve is closed;

If water flows out of the opened drain valve, judging that water channeling occurs in the valve group corresponding to the drain valve;

if water flows out of the closed drain valve, the drain valve is judged to be damaged.

S2, when the working condition of the ground source heat pump system is in winter, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed at the same time, namely the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8, the first valve 16 and the second valve 17 of each valve bank in the four valve banks are closed, and the drain valve is opened;

the low-temperature medium takes a ground source water pump as a power source, and flows through a ground source water collector, the ground source water pump, an evaporator of a ground source heat pump unit, the ground source water separator and a shallow surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump as a power source, and flows through the cold and hot water collector of the air conditioner, the cold and hot water pump, the condenser of the ground source heat pump unit, the cold and hot water separator of the air conditioner and the heat exchange source measurement of the end user to circulate and reciprocate;

The invention relates to a method and a device for judging channeling of a working condition conversion valve of a ground source heat pump system;

firstly, the eight valves of the ground source heat pump water system are designed to be a valve group consisting of double valves, and a section of water pipe and a drainage valve are added between the two valves, so that whether water exists in the drainage valve or not is judged, and the technical problem that when the ground source heat pump is switched in winter Xia Gongkuang, the water channeling situation of air conditioner water and ground source water which are to be separated cannot be judged is solved ingeniously.

Therefore, on one hand, the problems that energy efficiency of the ground source heat pump system is reduced, the energy efficiency of the ground source heat pump unit and the water pump is further reduced, and water temperature of a user on the demand side is difficult to ensure due to the fact that air-conditioning water and ground source water are mixed to cause energy loss and waste on the demand side are solved.

On the other hand, the problem that when the working pressure of the air conditioner side exceeds the working pressure of the ground source side water system, the ground pipe heat exchange system is easily damaged due to the channeling of air conditioner water and ground source water is solved; thirdly, the difficult problem that the valve cannot be timely found to be closed incompletely is solved, and the damage to the ground source side pipe, the valve and the instrument of the ground source heat pump system caused by water channeling and pressure difference between air-conditioning water and ground source water is avoided.

Secondly, the difficult problem of weaker operation and maintenance of the machine room is solved.

In particular, the problem that the artificial operation and maintenance is limited by the visual monitoring instrument and the signal feedback of the accessed automatic control system, and the detection capability of pipe sections and valve accessories which are not counted and still play an important role is weaker is solved.

Drawings

Fig. 1 is a schematic diagram of a ground source heat pump system.

Fig. 2 is a schematic structural diagram of a device for judging water channeling of a working condition switching valve of a ground source heat pump system.

Fig. 3 is a schematic diagram of a valve block structure.

Fig. 4 is a schematic diagram of the invention in distinction to a ground source heat pump system.

Description of the embodiments

Example 1:

as shown in fig. 2 and 3, the water channeling judging and alarming device of the ground source heat pump air conditioner working condition conversion valve group comprises a ground source heat pump unit 9, a ground source water pump 10, a ground source water collector 11, a ground source water collector 12, a cold and hot water pump 13, an air conditioner cold and hot water collector 14, an air conditioner cold and hot water collector 15 and 8 on-off devices;

The ground source heat pump unit 9 comprises a condenser and an evaporator, wherein the condenser comprises a condenser water inlet and a condenser water outlet, and the evaporator comprises an evaporator water inlet and an evaporator water outlet;

further, the number of the ground source heat pump units 9 is at least 1, and the corresponding number of the ground source heat pump units is set according to the area of the residential building or the number of the rooms.

The 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the ground source water collector 11 is divided into two pipelines after passing through the ground source water pump 10 through pipelines, and one pipeline is connected into a condenser water inlet of the ground source heat pump unit 9 after passing through the 1 st on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit 9 through the 3 rd on-off device; the water outlet of the condenser of the ground source heat pump unit 9 is connected into the ground source water separator 12 and the air conditioner cold and hot water separator 15 through the 2 nd on-off device and the 6 th on-off device respectively through pipelines;

the cold and hot water collector 14 of the air conditioner is divided into two pipelines after passing through the cold and hot water pump 13 through pipelines, and one pipeline is connected into a condenser water inlet of the ground source heat pump unit 9 after passing through the 5 th on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit 9 through a 7 th on-off device; the water outlet of the evaporator of the ground source heat pump unit 9 is connected into the ground source water separator 12 and the air conditioner cold and hot water separator 15 through the 4 th on-off device and the 8 th on-off device respectively through pipelines;

As shown in fig. 3, the on-off device is a valve group, the valve group comprises a first valve 16, a second valve 17, a drain pipe 19 and a drain valve 20, the first valve 16 and the second valve 17 are connected in series, one end of the drain pipe 19 is connected with the drain valve 20, and the other end is connected with a pipeline between the first valve 16 and the second valve 17;

Further, as shown in fig. 3, each valve block further includes a sensor 18, a self-control line and a controller, the sensor 18 being disposed in the drain pipe 19; the sensor 18 is in electrical signal connection with the controller through an automatic control line; the sensor 18 is a pressure sensor and is used for detecting whether water flow pressure exists in a pipeline of the drain pipe 19; when the sensor 18 detects that the water flow pressure exists in the pipeline of the drain pipe 19, the signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding.

Further, the drain valve 20 is an electric valve, and the drain valve 20 is electrically connected with the controller 21 through an automatic control line;

when the sensor 18 does not detect the water flow pressure in the pipeline of the drain pipe 19, the signal of the sensor 18 is fed back to the controller through the automatic control line, the controller gives an opening instruction to the drain valve 20 through the automatic control line, and the drain valve 20 opens the valve.

When the sensor 18 detects that the water flow pressure exists in the pipeline of the drain pipe 19, a signal of the sensor 18 is fed back to the controller 21 through the automatic control line, the controller 21 gives a closing instruction to the drain valve 20 through the automatic control line, and the drain valve 20 closes the valve.

Further, the first valve 16, the second valve 17 and the drain valve 20 are linkage electric valves, the first valve 16 and the second valve 17 are connected with the controller 21 through automatic control lines in an electric signal manner, when the controller 21 gives an opening instruction to the first valve 16 and the second valve 17, the linkage gives a closing instruction to the drain valve 20, the first valve 16 and the second valve 17 are opened, and the drain valve 20 is closed; when the controller 21 gives a closing instruction to the first valve 16 and the second valve 17, the controller gives an opening instruction to the drain valve 20 in linkage, the first valve 16 and the second valve 17 are closed, and the drain valve 20 is opened.

Further, the sensor 18 is a water flow sensor;

when the first valve 16 and the second valve 17 are opened and the drain valve 20 is closed, if the sensor 18 detects that water flow exists in the pipeline of the drain pipe 19, a signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

if the first valve 16 and the second valve 17 are opened, and meanwhile, the drain valve 20 is opened, the controller carries out operation error reminding; if the sensor 18 detects that water flow exists in the pipeline of the drain pipe 19, the signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water leakage reminding;

When the first valve 16 and the second valve 17 are closed and the drain valve 20 is opened, if the sensor 18 detects that water flow exists in the pipeline of the drain pipe 19, a signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

if the first valve 16 and the second valve 17 are closed, and meanwhile, the drain valve 20 is closed, the controller carries out operation error reminding; if the sensor 18 detects that water flow exists in the pipeline of the drain pipe 19, the signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding.

Further, when the ground source heat pump system works in summer, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened, the first valve 16 and the second valve 17 of the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened, and the drain valve 20 is closed;

the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are closed, the first valve 16 and the second valve 17 of the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are closed, and the drain valve 20 is opened;

the high-temperature medium takes the ground source water pump 10 as a power source, and flows through the ground source water collector 11, the ground source water pump 10, the condenser of the ground source heat pump unit 9, the ground source water separator 12 and the shallow surface heat exchange source measurement to and fro in a circulating way; the low-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the evaporator of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to and fro.

Further, when the ground source heat pump system works in winter, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed, the first valve 16 and the second valve 17 of the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed, and the drain valve 20 is opened;

the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are opened; the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the first valve 16 and the second valve 17 of the sixth valve bank 6 are opened, and the drain valve 20 is closed;

the low-temperature medium takes a ground source water pump 10 as a power source, and flows through a ground source water collector 11, the ground source water pump 10, an evaporator of a ground source heat pump unit 9, a ground source water separator 12 and a shallow ground surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the condenser of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to and fro.

Further, the sensor 18 is a pressure gauge, or a flow meter, or a water flow indicator.

As shown in fig. 2 and 4, the method for judging the channeling of the air conditioning working condition conversion valve bank of the ground source heat pump comprises a ground source heat pump unit 9, a ground source water pump 10, a ground source water collector 11, a ground source water collector 12, a cold and hot water pump 13, an air conditioning cold and hot water collector 14, an air conditioning cold and hot water separator 15 and 8 on-off devices;

the 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the method comprises the following steps:

s1, when a local source heat pump system works in winter; the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed, the first valve 16 and the second valve 17 of the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed, and the drain valve 20 is opened;

the low-temperature medium takes a ground source water pump 10 as a power source, and flows through a ground source water collector 11, the ground source water pump 10, an evaporator of a ground source heat pump unit 9, a ground source water separator 12 and a shallow ground surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the condenser of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to circulate and reciprocate;

If water flows out of the opened drain valve 20, judging that water channeling occurs in a valve group corresponding to the drain valve 20;

if water flows out of the closed drain valve 20, judging that the drain valve 20 is damaged;

s2, when the ground source heat pump system works in summer, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened, the first valve 16 and the second valve 17 of the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened, and the drain valve 20 is closed;

the high-temperature medium takes the ground source water pump 10 as a power source, and flows through the ground source water collector 11, the ground source water pump 10, the condenser of the ground source heat pump unit 9, the ground source water separator 12 and the shallow surface heat exchange source measurement to and fro in a circulating way; the low-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the evaporator of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to circulate and reciprocate;

If water flows out of the closed drain valve 20, it is determined that the drain valve 20 is damaged.

Further, as shown in fig. 3, each valve block further includes a sensor 18, a self-control line and a controller, the sensor 18 being disposed in the drain pipe 19; the sensor 18 is in electrical signal connection with the controller through an automatic control line; the sensor 18 is a pressure sensor and is used for detecting whether water flow pressure exists in a pipeline of the drain pipe 19; when the sensor 18 detects that the water flow pressure exists in the pipeline of the drain pipe 19, the signal of the sensor 18 is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

the drain valve 20 is an electric valve, and the drain valve 20 is electrically connected with the controller 21 through an automatic control line;

The embodiment aims to provide a water channeling judging method and device for a working condition switching valve of a ground source heat pump system, wherein the water channeling judging device for the working condition switching valve of the ground source heat pump system comprises a first valve group 1, a second valve group 2, a third valve group 3, a fourth valve group 4, a fifth valve group 5, a sixth valve group 6, a seventh valve group 7, an eighth valve group 8, a ground source heat pump unit 9, a ground source water pump 10, a ground source water collector 11, a ground source water collector 12, a cold and hot water pump 13, an air conditioner cold and hot water collector 14 and an air conditioner cold and hot water collector 15;

The internal structures of the first valve bank 1-the eighth valve bank 8 are composed of a first valve 16, a second valve 17, a sensor 18, a drain pipe 19, a drain valve 20 and a controller 21.

Further, the controller is a control box.

The third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 can know whether the valves leak by judging whether water exists in the drain pipes through the first valve 16, the second valve 17, the sensor 18, the drain pipe 19, the drain valve 20 and the controller 21 in the internal structure, can directly and manually judge visually and be linked to a display alarm device in the controller 21, and can also be an alarm device in the linkage controller 21 after being indirectly sensed by a sensing device.

When the ground source heat pump system works in summer, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are opened, and the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are closed.

The high-temperature medium takes the ground source water pump 10 as a power source, and flows through the ground source water collector 11, the ground source water pump 10, the condenser of the ground source heat pump unit 9, the ground source water separator 12 and the shallow surface heat exchange source measurement to and fro.

The low-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the evaporator of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to and fro.

When the ground source heat pump system works in winter, the first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 are closed, and the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5 and the sixth valve bank 6 are opened.

The low-temperature medium takes a ground source water pump 10 as a power source, and flows through a ground source water collector 11, the ground source water pump 10, an evaporator of a ground source heat pump unit 9, a ground source water separator 12 and a shallow surface heat exchange source test to and fro.

The high-temperature medium takes the cold and hot water pump 13 as a power source, and flows through the cold and hot water collector 14 of the air conditioner, the cold and hot water pump 13, the condenser of the ground source heat pump unit 9, the cold and hot water separator 15 of the air conditioner and the heat exchange source measurement of the end user to and fro.

The first valve bank 1, the second valve bank 2, the seventh valve bank 7 and the eighth valve bank 8 can know whether the valves leak by judging whether water exists in the drain pipes through the first valve 16, the second valve 17, the sensor 18, the drain pipe 19, the drain valve 20 and the controller 21 in the internal structure, can directly and manually judge visually and be linked to a display alarm device in the controller 21, and can also be an alarm device in the linkage controller 21 after being indirectly sensed by a sensing device.

In the embodiment, eight valves (V1-V8, see FIG. 1) of the water system are replaced by valve groups (1-8, see FIG. 2) consisting of double valves, and a section of water pipe (a water drain pipe or a signal pipe) is added between the two valves, which are the switching valve groups, and then a sensor and accessories are matched, so that a judging and alarming device capable of judging whether the valves leak water (channeling water) is formed.

With both valves closed, no water is present after the intermediate water is drained.

The leakage of the valve can be known only by judging whether water exists in the drain pipe (signal pipe), and the valve can be manually judged, or can be alarmed by an alarm after being sensed by a related sensor.

In this way, in the operation of the ground source heat pump system, the mutual channeling of air-conditioning water and ground source side water and unnecessary energy loss are avoided, the cost of the machine room for later operation and maintenance is saved, the efficient operation of the ground source heat pump system is ensured, and the stability and reliability of the building energy system and the air-conditioning quality are improved.

The present embodiment differs from embodiment 3 in that: the controller 21 is respectively connected with the first valve bank 1, the second valve bank 2, the third valve bank 3, the fourth valve bank 4, the fifth valve bank 5, the sixth valve bank 6, the seventh valve bank 7 and the eighth valve bank 8 through communication points and automatic control lines in an electric signal mode.

Further, the controller 21 has at least 32 communication points, or 8 controllers, each having at least 4 communication points;

the communication point a1 in the controller 21 is connected to the first valve 16 via an automatic control line,

the communication point a2 in the controller 21 is connected to the second valve 17 via an automatic control line,

the communication point a3 in the controller 21 is connected to the sensor 18 via an automatic control line,

the communication point a4 in the controller 21 is connected to the drain valve 20 through an automatic control line,

when the ground source heat pump system is in summer working condition, the air conditioner working condition conversion fifth valve group 5 and the air conditioner working condition conversion valve 6 are closed, and the ground source side conversion third valve group 3 and the fourth valve group 4 are closed.

The ground source side pipeline and the air conditioner side pipeline are separated through an air conditioner working condition switching valve 5, an air conditioner working condition switching valve 6, a ground source side switching third valve group 3 and a fourth valve group 4.

The high-temperature water in the pipeline at the ground source side forms heat release circulation with the shallow geothermal energy through the condenser side of the ground source heat pump unit and the water pump as power measures.

The low-temperature water in the air-conditioning side pipeline forms a heat absorption cycle with the tail end demand side by taking the evaporator side of the ground source heat pump unit and the water pump as power measures.

When the ground source heat pump system is under summer working conditions, if the air-conditioning working condition conversion fifth valve group 5 or the air-conditioning working condition conversion sixth valve group 6 is not completely closed, the water quantity of the ground source side pipeline or the air-conditioning side pipeline generates the blowby of the pipeline through the air-conditioning conversion fifth valve group 5 or the air-conditioning conversion sixth valve group 6, or the blowby of the ground source side conversion third valve group 3 and the fourth valve group 4,

First, the pressure sensor 18 receives a pressure signal generated by the flow of water, and the pressure signal is fed back to the communication point a3 in the controller 21 by an automatic control line.

Next, the communication point a4 in the controller 21 instructs the drain valve 20 (drain valve) to be started, and drain is discharged via the drain line.

And thirdly, alarming by a display screen in the controller 21, and completely closing the air-conditioning working condition conversion fifth valve group 5 and the air-conditioning working condition conversion sixth valve group 6 by manual operation, or respectively electrically and completely closing the first valve 16 and the second valve 17 in the air-conditioning working condition conversion fifth valve group 5 and the air-conditioning working condition conversion sixth valve group 6 by a communication point a1 and a communication point a2 in the controller 21 through an automatic control line.

The pressure sensor 18 then no longer monitors the pressure of the water flow in the line and feeds it back to the controller 21.

Finally, the controller 21 commands the drain valve 20 (drain valve) to close through the automatic control line.

In conclusion, the air conditioner working condition conversion valve group completes a set of water channeling judgment alarm flow.

When the ground source heat pump system works in winter, the air-conditioning working condition conversion fifth valve bank 5 and the air-conditioning working condition conversion sixth valve bank 6 are opened.

The medium water in the ground source side pipeline and the air conditioner side pipeline exchanges heat in the ground source heat pump unit 9, and the high-temperature water in the air conditioner side pipeline forms heat release circulation with the end demand side through the condenser and the water pump of the ground source heat pump unit as power measures.

The low-temperature water in the ground source side pipeline forms heat absorption circulation with the shallow geothermal energy by taking an evaporator and a water pump of the ground source heat pump unit as power measures.

When the ground source heat pump system works in winter, the air-conditioning working condition conversion fifth valve group 5 and the air-conditioning working condition conversion sixth valve group 6 are opened, and the ground source side conversion third valve group 3 and the fourth valve group 4 are opened.

When the pressure sensor 18 detects the water pressure in the pipeline, the water pressure is fed back to the controller 21 through an automatic control line.

The communication point a4 in the controller 21 instructs the drain valve 20 (drain valve) to close by a pilot line.

The device judges the switching condition of the air conditioner working condition in winter and summer by adding a water draining pipeline and a valve accessory, and alarms the channeling condition generated by incomplete closing of the conversion valve group.

The air conditioner working condition switching valve group and the ground source side switching valve group are switch valves or double-position valves according to valve control states.

The air conditioner working condition conversion valve group and the ground source side conversion valve group can be ball valves, gate valves, stop valves and butterfly valves according to pipe diameters and fluid delivery and distribution requirements.

The air conditioner working condition conversion valve group and the ground source side conversion valve group can be an electric valve or a manual valve according to the operation mode.

The drain valve (drain valve) may be a ball valve, a gate valve, or a stop valve.

The connection mode of the pipeline between the water drainage side pipeline and the air conditioner working condition conversion valve group and the ground source side conversion valve group can be threaded connection and welded connection.

The ground source side pipeline and the air conditioner side pipeline can be kept unchanged or exchanged in position according to the pipeline wiring of the actual ground source heat pump system.

The communication point in the controller can adjust the feedback mechanism of the controller according to the input/output signal requirement of the external access terminal.

The controller is internally provided with an open source program, and can be connected with a new terminal and participate in linkage control with the new terminal.

Claims

1. The water channeling judging and alarming device comprises a ground source heat pump unit (9), a ground source water pump (10), a ground source water collector (11), a ground source water separator (12), a cold and hot water pump (13), an air conditioner cold and hot water collector (14), an air conditioner cold and hot Shui Fenshui device (15) and 8 on-off devices;

the ground source heat pump unit (9) comprises a condenser and an evaporator, wherein the condenser comprises a condenser water inlet and a condenser water outlet, and the evaporator comprises an evaporator water inlet and an evaporator water outlet;

the 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the ground source water collector (11) is divided into two pipelines after passing through the ground source water pump (10) through a pipeline, and one pipeline is connected into a condenser water inlet of the ground source heat pump unit (9) after passing through the 1 st on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit (9) through the 3 rd on-off device; the water outlet of the condenser of the ground source heat pump unit (9) is connected into a ground source water separator (12) and an air conditioner cold and hot Shui Fenshui device (15) through a pipeline respectively through a 2 nd on-off device and a 6 th on-off device;

The cold and hot water collector (14) of the air conditioner is divided into two pipelines after passing through the cold and hot water pump (13) through pipelines, and one pipeline is connected into a condenser water inlet of the ground source heat pump unit (9) after passing through the 5 th on-off device; the other pipeline is connected to the water inlet of the evaporator of the ground source heat pump unit (9) through a 7 th on-off device; the water outlet of the evaporator of the ground source heat pump unit (9) is connected into a ground source water separator (12) and an air conditioner cold and hot Shui Fenshui device (15) through a 4 th on-off device and an 8 th on-off device respectively through pipelines;

the method is characterized in that: the on-off device is a valve group, the valve group comprises a first valve (16), a second valve (17), a drain pipe (19) and a drain valve (20), the first valve (16) and the second valve (17) are connected in series, one end of the drain pipe (19) is connected with the drain valve (20), and the other end of the drain pipe is connected with a pipeline between the first valve (16) and the second valve (17); the valve groups have the same structure, and the 8 on-off devices are respectively a first valve group (1), a second valve group (2), a third valve group (3), a fourth valve group (4), a fifth valve group (5), a sixth valve group (6), a seventh valve group (7) and an eighth valve group (8);

the automatic water draining device further comprises a sensor (18), an automatic control line and a controller, wherein the sensor (18) is arranged in the water draining pipe (19); the sensor (18) is in electrical signal connection with the controller through an automatic control line; the sensor (18) is a pressure sensor and is used for detecting whether water flow pressure exists in a pipeline of the drain pipe (19);

The first valve (16), the second valve (17) and the drain valve (20) are linkage electric valves, the first valve (16) and the second valve (17) are connected with a controller (21) through automatic control lines in an electric signal mode, when the controller (21) gives opening instructions to the first valve (16) and the second valve (17), the linkage gives closing instructions to the drain valve (20), the first valve (16) and the second valve (17) are opened, and the drain valve (20) is closed; when the controller (21) gives closing instructions to the first valve (16) and the second valve (17), the controller gives opening instructions to the drain valve (20) in a linkage way, the first valve (16) and the second valve (17) are closed, and the drain valve (20) is opened;

the sensor (18) is a water flow sensor;

when the first valve (16) and the second valve (17) are opened and the drain valve (20) is closed, if the sensor (18) detects that water flow exists in the pipeline of the drain pipe (19), the signal of the sensor (18) is fed back to the controller through the automatic control line, and the controller judges that the drain valve is damaged;

if the first valve (16) and the second valve (17) are opened, and meanwhile, the drain valve (20) is opened, and the controller carries out operation error reminding; if the sensor (18) detects that water flow exists in the pipeline of the drain pipe (19), the signal of the sensor (18) is fed back to the controller through the automatic control line, and the controller carries out water leakage reminding;

When the first valve (16) and the second valve (17) are closed and the drain valve (20) is opened, if the sensor (18) detects that water flow exists in the pipeline of the drain pipe (19), the signal of the sensor (18) is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

if the first valve (16) and the second valve (17) are closed, and meanwhile, the drain valve (20) is closed, and the controller carries out operation error reminding; if the sensor (18) detects that water flow exists in the pipeline of the water drain pipe (19), the signal of the sensor (18) is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding.

2. The ground source heat pump air conditioner working condition conversion valve group channeling judgment alarm device according to claim 1, which is characterized in that:

when the ground source heat pump system works in summer, the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are opened, the first valve (16) and the second valve (17) of the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are opened, and the drain valve (20) is closed;

the third valve group (3), the fourth valve group (4), the fifth valve group (5) and the sixth valve group (6) are closed, the first valve (16) and the second valve (17) of the third valve group (3), the fourth valve group (4), the fifth valve group (5) and the sixth valve group (6) are closed, and the drain valve (20) is opened;

The high-temperature medium takes a ground source water pump (10) as a power source, and flows through a ground source water collector (11), the ground source water pump (10), a condenser of a ground source heat pump unit (9), a ground source water separator (12) and a shallow surface heat exchange source measurement to and fro in a circulating way; the low-temperature medium takes a cold and hot water pump (13) as a power source, flows through an air-conditioning cold and hot water collector (14), the cold and hot water pump (13), an evaporator of a ground source heat pump unit (9), an air-conditioning cold and hot Shui Fenshui device (15) and an end user heat exchange source test and is circulated and reciprocated.

3. The ground source heat pump air conditioner working condition conversion valve group channeling judgment alarm device according to claim 1, which is characterized in that:

when the ground source heat pump system works in winter, the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are closed, the first valve (16) and the second valve (17) of the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are closed, and the drain valve (20) is opened;

the third valve group (3), the fourth valve group (4), the fifth valve group (5) and the sixth valve group (6) are opened; the third valve group (3), the fourth valve group (4), the fifth valve group (5) and the first valve (16) and the second valve (17) of the sixth valve group (6) are opened, and the drain valve (20) is closed;

The low-temperature medium takes a ground source water pump (10) as a power source, and flows through a ground source water collector (11), the ground source water pump (10), an evaporator of a ground source heat pump unit (9), a ground source water separator (12) and a shallow surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump (13) as a power source, and flows through the cold and hot water collector (14) of the air conditioner, the cold and hot water pump (13), the condenser of the ground source heat pump unit (9), the cold and hot Shui Fenshui device (15) of the air conditioner and the heat exchange source measurement of the end user to and fro.

4. The ground source heat pump air conditioner working condition conversion valve group channeling judgment alarm device according to claim 1, which is characterized in that: the sensor (18) is a pressure gauge, or a flow meter, or a water flow indicator.

5. A water channeling judging method of a ground source heat pump air conditioner working condition conversion valve bank comprises a ground source heat pump unit (9), a ground source water pump (10), a ground source water collector (11), a ground source water separator (12), a cold and hot water pump (13), an air conditioner cold and hot water collector (14), an air conditioner cold and hot Shui Fenshui device (15) and 8 on-off devices;

The 8 on-off devices are respectively the 1 st to 8 th on-off devices;

the on-off device is a valve group, the valve group comprises a first valve (16), a second valve (17), a drain pipe (19) and a drain valve (20), the first valve (16) and the second valve (17) are connected in series, one end of the drain pipe (19) is connected with the drain valve (20), and the other end of the drain pipe is connected with a pipeline between the first valve (16) and the second valve (17);

The valve groups have the same structure, and the 8 on-off devices are respectively a first valve group (1), a second valve group (2), a third valve group (3), a fourth valve group (4), a fifth valve group (5), a sixth valve group (6), a seventh valve group (7) and an eighth valve group (8);

The sensor (18) is a water flow sensor;

if the first valve (16) and the second valve (17) are closed, and meanwhile, the drain valve (20) is closed, and the controller carries out operation error reminding; if the sensor (18) detects that water flow exists in the pipeline of the drain pipe (19), the signal of the sensor (18) is fed back to the controller through the automatic control line, and the controller carries out water channeling reminding;

The method is characterized by comprising the following steps of:

s1, when a local source heat pump system works in winter; the first valve group (1), the second valve group (2), the seventh valve group (7) and the eighth valve group (8) are closed, the first valve group (1), the second valve group (2), the seventh valve group (7) and the first valve (16) and the second valve (17) of the eighth valve group (8) are closed, and the drain valve (20) is opened;

the low-temperature medium takes a ground source water pump (10) as a power source, and flows through a ground source water collector (11), the ground source water pump (10), an evaporator of a ground source heat pump unit (9), a ground source water separator (12) and a shallow surface heat exchange source test to and fro in a circulating way; the high-temperature medium takes the cold and hot water pump (13) as a power source, and flows through the cold and hot water collector (14) of the air conditioner, the cold and hot water pump (13), the condenser of the ground source heat pump unit (9), the cold and hot Shui Fenshui device (15) of the air conditioner and the heat exchange source measurement of the end user to and fro in a circulating way;

If water flows out of the opened drain valve (20), judging that water channeling occurs in a valve group corresponding to the drain valve (20);

if water flows out of the closed drain valve (20), judging that the drain valve (20) is damaged;

s2, when the ground source heat pump system works in summer, the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are opened, the first valve (16) and the second valve (17) of the first valve bank (1), the second valve bank (2), the seventh valve bank (7) and the eighth valve bank (8) are opened, and the drain valve (20) is closed;

the high-temperature medium takes a ground source water pump (10) as a power source, and flows through a ground source water collector (11), the ground source water pump (10), a condenser of a ground source heat pump unit (9), a ground source water separator (12) and a shallow surface heat exchange source measurement to and fro in a circulating way; the low-temperature medium takes a cold and hot water pump (13) as a power source, flows through an air-conditioning cold and hot water collector (14), the cold and hot water pump (13), an evaporator of a ground source heat pump unit (9), an air-conditioning cold and hot Shui Fenshui device (15) and a heat exchange source measurement of an end user, and circularly reciprocates;

if water flows out of the closed drain valve (20), the drain valve (20) is judged to be damaged.