CN107787162B - Circulation cooling device adopting pure water medium and application method thereof - Google Patents
Circulation cooling device adopting pure water medium and application method thereof Download PDFInfo
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- CN107787162B CN107787162B CN201610787777.6A CN201610787777A CN107787162B CN 107787162 B CN107787162 B CN 107787162B CN 201610787777 A CN201610787777 A CN 201610787777A CN 107787162 B CN107787162 B CN 107787162B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
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Abstract
The invention relates to the field of general heat exchange or heat transfer equipment, in particular to a circulating cooling device adopting pure water media and a use method thereof. The utility model provides an adopt circulation cooling device of pure water medium, includes centrifugal pump (11), cooling inlet tube (21), cooling outlet pipe (22) and outer cooling device (31), characterized by: the device also comprises a raw water pump (12), a water supplementing pump (13), a first filter (41), a second filter (42), a third filter (43), a raw water tank (51), a buffer tank (52), a degassing tank (53), a gas storage tank (54), an ion exchanger (6) and a heater (7). The application method of the circulating cooling device adopting the pure water medium is characterized by comprising the following steps of: the method comprises the following control steps: controlling the operation of the centrifugal pump (11); II, controlling a three-way butterfly valve (86); III, heater control; IV, controlling a water supplementing pump. The invention has high cooling efficiency and strong adaptability.
Description
Technical Field
The invention relates to the field of general heat exchange or heat transfer equipment, in particular to a circulating cooling device adopting pure water media and a use method thereof.
Background
Cooling devices using pure water as a cooling medium are increasingly used, and the cooling devices drive water circulation through a water pump, absorb heat through heat exchange of a radiator of a cooled electronic component, and then exchange heat with the environment through an external heat exchanger to play a role in cooling. However, the existing water circulation cooling equipment has the defects of huge volume, large hydraulic loss, poor environmental adaptability and the like, and the working efficiency is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides heat exchange equipment with high cooling efficiency, convenient use, rapid reaction and strong adaptability, and discloses a circulating cooling device adopting pure water media and a use method thereof.
The invention achieves the aim through the following technical scheme:
a circulating cooling device adopting pure water medium comprises a centrifugal pump, a cooling water inlet pipe, a cooling water outlet pipe and an external cooling device, wherein the external cooling device is connected in series between a water inlet of the cooling water inlet pipe and a water outlet of the cooling water outlet pipe, a valve chamber to be cooled is connected in series between a water outlet of the cooling water inlet pipe and a water inlet of the cooling water outlet pipe, the centrifugal pump is connected on the cooling water outlet pipe in series, the water inlet of the centrifugal pump is connected with the water inlet of the cooling water outlet pipe, the water outlet of the centrifugal pump is connected with the water outlet of the cooling water outlet pipe, under the driving of the centrifugal pump, cooling water is pumped into the valve chamber from the cooling water inlet pipe, after heat exchange temperature rise occurs in the valve chamber, the cooling water is pumped into the external cooling device through the cold water outlet pipe, after heat exchange temperature drop occurs in the external cooling device,
the method is characterized in that: also comprises a raw water pump, a water supplementing pump, a first filter, a second filter, a third filter, a raw water tank, a buffer tank, a degassing tank, a gas storage tank, an ion exchanger and a heater,
the water inlet of the raw water pump is connected with a pure water source through a normally open ball valve, the water outlet of the raw water pump is connected with the water inlet of the raw water tank through a water pipe sequentially connected with a first filter and the normally open ball valve in series, the water outlet of the raw water tank is connected with the water inlet of a water supplementing pump through a normally open ball valve, the water outlet of the water supplementing pump is connected with the water inlet of a buffer tank through a water pipe sequentially connected with a one-way valve, the normally open ball valve, an ion exchanger, the normally open ball valve, a second filter and the normally open ball valve in series, the water outlet of the buffer tank is connected with the water inlet of a centrifugal pump through a water pipe sequentially connected with a normally open butterfly valve, a degassing tank and the normally open butterfly valve in series, a heater is arranged in the degassing tank, the top of the buffer tank is provided with a vent valve, and the gas outlet of the gas tank is connected with the gas inlet at the top of the buffer tank through a gas pipe sequentially connected with the normally open butterfly valve, the solenoid valve and the normally open ball valve in series;
the water outlet of the cooling water inlet pipe is connected with the water inlet of the valve chamber through a normally open butterfly valve, and the water inlet of the cooling water outlet pipe is connected with the water outlet of the valve chamber through a normally open butterfly valve;
the water inlet of the third filter is connected with the water inlet of the cooling water inlet pipe through a normally open butterfly valve, the water outlet of the third filter is connected with the water outlet of the cooling water inlet pipe through a normally open butterfly valve, the water outlet of the third filter is connected with the water inlet of the ion exchanger through a one-way valve, and the water outlet of the third filter is also connected with the water inlet of the cooling water outlet pipe through a normally open ball valve;
the three-way butterfly valve is provided with a water inlet and two water outlets, the water inlet of the three-way butterfly valve is connected with the water outlet of the centrifugal pump, the two water outlets of the three-way butterfly valve are respectively connected with the water inlet of the third filter and the water inlet of the external cooling device, and the three-way butterfly valve adjusts the water outlet proportion of the two water outlets through an internal valve rod.
The circulating cooling device adopting the pure water medium is characterized in that: the centrifugal pump, the water supplementing pump, the second filter, the third filter, the buffer tank, the ion exchanger and the three-way butterfly valve are respectively connected in parallel, and the buffer tanks are connected in series;
the cooling water inlet pipe and the cooling water outlet pipe are connected through a water pipe connected with a normally closed butterfly valve in series; the water inlet and the water outlet of the degassing tank are connected through a water pipe connected with a normally closed butterfly valve in series; the water inlet and the water outlet of the three-way butterfly valve are connected with each other through a water pipe connected with the normally closed butterfly valve in series.
The circulating cooling device adopting the pure water medium is characterized in that: also comprises a flow sensor, a temperature sensor, a differential pressure sensor, a liquid level sensor, a conductivity sensor and a controller,
the water outlet of the centrifugal pump is connected with a flow sensor in series; the water outlet of the water supplementing pump is connected with a flow sensor in series; the cooling water inlet pipe and the cooling water outlet pipe are connected with a flow sensor and a temperature sensor in series; a temperature sensor is arranged in the valve chamber; two ends of the differential pressure sensor are respectively connected with a water inlet and a water outlet of the first filter through a normally open ball valve; the water inlet and the water outlet of the second filter are respectively connected with a flow sensor in series; two ends of the differential pressure sensor are respectively connected with a water inlet and a water outlet of the third filter through a normally open ball valve; a liquid level sensor is arranged in both the raw water tank and the buffer tank; the ion exchanger is internally provided with a conductivity sensor;
the centrifugal pump, the raw water pump, the water supplementing pump, the electromagnetic valve, the three-way butterfly valve, the flow sensor, the temperature sensor, the differential pressure sensor, the liquid level sensor and the conductivity sensor are all connected with the controller through signal lines, and the controller is a programmable controller.
The application method of the circulating cooling device adopting the pure water medium is characterized by comprising the following steps of: the method comprises the following control steps:
I. centrifugal pump operation control:
when the controller monitors that one of the following conditions a-e is satisfied, the controller switches the respective states of the two centrifugal pumps:
a. one centrifugal pump continuously runs 168 hours
b. The flow sensor connected in series with the outlet of the centrifugal pump detects that the flow of the centrifugal pump is lower than a set value,
c. overload or overheating of the centrifugal pump;
d. water leakage of the centrifugal pump;
e. a power failure to drive the centrifugal pump;
after the controller switches the states of the two centrifugal pumps, if the centrifugal pump in the running state still has the phenomenon b or c, the controller switches the states of the two centrifugal pumps again;
when the controller monitors that the following conditions i and ii are met, the controller sends a tripping protection instruction to cut off the power supply:
i. the flow rate of at least one of the cooling water inlet pipe and the cooling water outlet pipe is lower than the warning value, and the flow rate of the water supplementing pump is lower than the warning value;
ii, when two centrifugal pumps exist in any one of the above b-e at the same time;
II, three-way butterfly valve control:
when the water supply temperature of the cooling water inlet pipe to the valve chamber is higher than 28 ℃, the three-way butterfly valve is in a full-open state, cooling water which flows into the three-way butterfly valve from the cooling water outlet pipe and completes heat exchange flows into the external cooling device through one water outlet in a maximum proportion, and corresponding cooling water flows back to the cooling water inlet pipe through the third filter through the other water outlet in a minimum proportion;
when the water supply temperature of the cooling water inlet pipe to the valve chamber is lower than 25 ℃, the three-way butterfly valve is in a fully closed state, cooling water which flows into the three-way butterfly valve from the cooling water outlet pipe and completes heat exchange flows into the external cooling device through one water outlet in a minimum proportion, and corresponding cooling water flows back to the cooling water inlet pipe through the third filter through the other water outlet in a maximum proportion;
when the water supply temperature of the cooling water inlet pipe to the valve chamber is 25-28 ℃, the state of the three-way butterfly valve is between full opening and full closing, and the controller controls the opening degree of the valve rod of the three-way butterfly valve to maintain the water supply temperature of the cooling water inlet pipe to the valve chamber between 25-28 ℃;
heater control:
when the temperature of the cooling water inlet pipe for supplying water to the valve chamber is not higher than 10 ℃, the controller controls the heater to start; when the temperature of the cooling water inlet pipe for supplying water to the valve chamber is not lower than 13 ℃, the controller controls the heater to stop;
when the water supply temperature of the cooling water inlet pipe to the valve chamber is close to the dew point of the valve chamber (generally, the difference of the water supply temperature below the dew point is not more than 2 ℃), the controller controls the heater to start; when the temperature of the water supply of the cooling water inlet pipe to the valve chamber is higher than the dew point of the valve chamber by 4 ℃, the controller controls the heater to stop;
when the centrifugal pump stops running or a flow sensor connected in series with the water outlet of the centrifugal pump detects that the flow of the centrifugal pump is lower than a warning value, the heater stops;
IV, controlling a water supplementing pump:
when the controller monitors that the water level in the buffer tank is lower than a set value, the controller controls the water supplementing pump to operate;
when the controller monitors that the water level in the buffer tank is lower than the warning value, the controller sends out a tripping protection instruction to cut off the power supply;
when the controller monitors that the water level in the buffer tank reaches a set value, the controller controls the water supplementing pump to stop;
when the controller monitors that the water level in the raw water tank is lower than the warning value, the controller controls the water supplementing pump to stop.
When the centrifugal pump is used, cooling water is input into the valve chamber from the cooling water inlet pipe under the drive of the centrifugal pump, all parts in the valve chamber are cooled through heat exchange, the warmed cooling water is input into the external cooling device through the cooling water outlet pipe, and the cooled cooling water is input into the cooling water inlet pipe again for recycling; the raw water pump pumps pure water into the raw water tank for storage, when the flow rate of cooling water is reduced, the water supplementing pump pumps pure water in the raw water tank, the pure water is filtered by the ion exchanger and the second filter, and is injected into the cooling water outlet pipe after being stabilized by the buffer tank and deaerated by the deaeration tank, and then is pumped into the cooling water inlet pipe by the centrifugal pump to participate in cooling the valve chamber; the sensors transmit parameters such as flow, temperature, pressure difference, liquid level, conductivity and the like to the controller in real time, and the controller sends various instructions according to the parameters, so that the valve chamber is ensured to be cooled timely and accurately, and the normal operation of each component is ensured.
The beneficial effects of the invention are as follows: the cooling efficiency is high, the use is convenient, the reaction is rapid, and the adaptability is strong.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the connections of a centrifugal pump, a raw water pump, a water supplementing pump, a solenoid valve, a three-way butterfly valve, a flow sensor, a temperature sensor, a differential pressure sensor, a liquid level sensor, a conductivity sensor and a controller in the invention.
Description of the embodiments
The invention is further illustrated by the following specific examples.
Examples
The utility model provides a adopt circulation cooling device of pure water medium, including centrifugal pump 11, raw water pump 12, make-up pump 13, cooling inlet tube 21, cooling outlet pipe 22, outer cooling device 31, first filter 41, second filter 42, third filter 43, raw water tank 51, buffer tank 52, degasification jar 53, gas holder 54, ion exchanger 6, heater 7, flow sensor 91, temperature sensor 92, differential pressure sensor 93, liquid level sensor 94, conductivity sensor 95 and controller 100, as shown in fig. 1 and 2, the specific structure is:
an external cooling device 31 is connected in series between the water inlet of the cooling water inlet pipe 21 and the water outlet of the cooling water outlet pipe 22, a valve chamber 32 to be cooled is connected in series between the water outlet of the cooling water inlet pipe 21 and the water inlet of the cooling water outlet pipe 22, a centrifugal pump 11 is connected on the cooling water outlet pipe 22, the water inlet of the centrifugal pump 11 is connected with the water outlet of the cooling water outlet pipe 22, cooling water is pumped into the valve chamber 32 from the cooling water inlet pipe 21 under the driving of the centrifugal pump 11, heat exchange temperature rise occurs in the valve chamber 32, then is pumped into the external cooling device 31 through the cold water outlet pipe 22, and then is led into the cooling water inlet pipe 21 after heat exchange temperature reduction occurs in the external cooling device 31;
the water inlet of the raw water pump 12 is connected with a pure water source through a normally open ball valve 81, the water outlet of the raw water pump 12 is connected with the water inlet of a raw water tank 51 through a water pipe sequentially connected with a first filter 41 and a normally open ball valve 81 in series, the water outlet of the raw water tank 51 is connected with the water inlet of a water supplementing pump 13 through a normally open ball valve 81, the water outlet of the water supplementing pump 13 is connected with the water inlet of a buffer tank 52 through a water pipe sequentially connected with a one-way valve 82, a normally open ball valve 81, an ion exchanger 6, a normally open ball valve 81, a second filter 42 and a normally open ball valve 81 in series, the water outlet of the buffer tank 52 is connected with the water inlet of a centrifugal pump 11 through a water pipe sequentially connected with a normally open butterfly valve 83, a degassing tank 53 and a normally open butterfly valve 83 in series, a heater 7 is arranged in the degassing tank 53, an exhaust valve 84 is arranged at the top of the buffer tank 52, high-purity nitrogen is usually reserved in a gas storage tank 54, and the gas outlet of the gas storage tank 54 is connected with the gas inlet at the top of the buffer tank 52 through a gas pipe sequentially connected with a normally open butterfly valve 83, a solenoid valve 85 and a normally open ball valve 81;
the water outlet of the cooling water inlet pipe 21 is connected with the water inlet of the valve chamber 32 through a normally open butterfly valve 83, and the water inlet of the cooling water outlet pipe 22 is connected with the water outlet of the valve chamber 32 through the normally open butterfly valve 83;
the third filter 43 is connected in series with the cooling water inlet pipe 21, the water inlet of the third filter 43 is connected with the water inlet of the cooling water inlet pipe 21 through a normally open butterfly valve 83, the water outlet of the third filter 43 is connected with the water outlet of the cooling water inlet pipe 21 through a normally open butterfly valve 83, the water outlet of the third filter 43 is connected with the water inlet of the ion exchanger 6 through a one-way valve 82, and the water outlet of the third filter 43 is also connected with the water inlet of the cooling water outlet pipe 22 through a normally open ball valve 81;
the three-way butterfly valve 86 is provided with a water inlet and two water outlets, the water inlet of the three-way butterfly valve 86 is connected with the water outlet of the centrifugal pump 11, the two water outlets of the three-way butterfly valve 86 are respectively connected with the water inlet of the third filter 43 and the water inlet of the external cooling device 31, and the three-way butterfly valve 86 adjusts the water outlet proportion of the two water outlets through an internal valve rod.
In this embodiment: the centrifugal pump 11, the water supplementing pump 13, the second filter 42, the third filter 43, the buffer tank 52, the ion exchanger 6 and the three-way butterfly valve 86 are respectively two, the centrifugal pump 11, the water supplementing pump 13, the second filter 42, the third filter 43, the ion exchanger 6 and the three-way butterfly valve 86 are respectively connected in parallel, and the buffer tank 52 is connected in series;
the cooling water inlet pipe 21 and the cooling water outlet pipe 22 are connected through a water pipe connected in series with a normally closed butterfly valve 87; the water inlet and the water outlet of the degassing tank 53 are connected through a water pipe connected in series with a normally closed butterfly valve 87; the water inlet and the water outlet of the three-way butterfly valve 86 are connected through a water pipe connected with a normally closed butterfly valve 87 in series;
the water outlet of the centrifugal pump 11 is connected with a flow sensor 91 in series; the water outlet of the water supplementing pump 13 is connected in series with a flow sensor 91; the cooling water inlet pipe 21 and the cooling water outlet pipe 22 are connected in series with a flow sensor 91 and a temperature sensor 92; a temperature sensor 92 is provided in the valve chamber 32; two ends of the differential pressure sensor 93 are respectively connected with the water inlet and the water outlet of the first filter 41 through a normally open ball valve 81; the water inlet and the water outlet of the second filter 42 are respectively connected in series with a flow sensor 91; two ends of the differential pressure sensor 93 are respectively connected with the water inlet and the water outlet of the third filter 43 through a normally open ball valve 81; a liquid level sensor 94 is provided in both the raw water tank 51 and the buffer tank 52; the ion exchanger 6 is internally provided with a conductivity sensor 95;
the centrifugal pump 11, the raw water pump 12, the water supplementing pump 13, the electromagnetic valve 85, the three-way butterfly valve 86, the flow sensor 91, the temperature sensor 92, the differential pressure sensor 93, the liquid level sensor 94 and the conductivity sensor 95 are all connected with the controller 100 through signal lines, and the controller 100 is a programmable controller.
When the embodiment is used, the method comprises the following control steps:
I. centrifugal pump 11 operation control:
when the controller 100 monitors that one of the following conditions a to e is satisfied, the controller 100 switches the respective states of the two centrifugal pumps 11:
a. one centrifugal pump 11 continuously runs 168hour
b. The flow sensor 91 connected in series with the water outlet of the centrifugal pump 11 detects that the flow of the centrifugal pump 11 is lower than a set value,
c. the centrifugal pump 11 is overloaded or overheated;
d. the centrifugal pump 11 leaks water;
e. a power failure to drive the centrifugal pump 11;
after the controller 11 switches the states of the two centrifugal pumps 11, if the centrifugal pump 11 in the operating state still has the above-described phenomenon b or c, the controller 100 switches the respective states of the two centrifugal pumps 11 again;
when the controller 100 monitors that the following conditions i and ii are satisfied, the controller 100 issues a trip protection command to cut off the power supply:
i. at least one of the cooling water inlet pipe 21 and the cooling water outlet pipe 22 has a flow rate lower than the warning value, and the water supplementing pump 13 has a flow rate lower than the warning value;
if any one of the above b to e exists in both centrifugal pumps 11;
II, three-way butterfly valve 86 control:
when the temperature of the water supplied from the cooling water inlet pipe 21 to the valve chamber 32 is higher than 28 ℃, the three-way butterfly valve 86 is in a fully opened state, the cooling water which is subjected to heat exchange and flows into the three-way butterfly valve 86 from the cooling water outlet pipe 22 flows into the external cooling device 31 through one water outlet in the maximum proportion, and the corresponding cooling water flows back to the cooling water inlet pipe 21 through the third filter 43 through the other water outlet in the minimum proportion;
when the temperature of the water supplied from the cooling water inlet pipe 21 to the valve chamber 32 is lower than 25 ℃, the three-way butterfly valve 86 is in a fully closed state, the cooling water which is subjected to heat exchange and flows into the three-way butterfly valve 86 from the cooling water outlet pipe 22 flows into the external cooling device 31 through one water outlet in a minimum proportion, and the corresponding cooling water flows back to the cooling water inlet pipe 21 through the third filter 43 through the other water outlet in a maximum proportion;
when the water supply temperature of the cooling water inlet pipe 21 to the valve chamber 32 is 25-28 ℃, the state of the three-way butterfly valve 86 is between full open and full closed, and the controller 100 controls the opening degree of the valve rod of the three-way butterfly valve 86 to maintain the water supply temperature of the cooling water inlet pipe 21 to the valve chamber 32 between 25-28 ℃;
heater control:
when the temperature of the water supplied from the cooling water inlet pipe 21 to the valve chamber 32 is not higher than 10 ℃, the controller 100 controls the heater 7 to be started; when the temperature of the water supplied from the cooling water inlet pipe 21 to the valve chamber 32 is not lower than 13 ℃, the controller 100 controls the heater 7 to stop;
when the water supply temperature of the cooling water inlet pipe 21 to the valve chamber 32 approaches the dew point of the valve chamber 32 (typically, the difference of the water supply temperature below the dew point is not more than 2 ℃), the controller 100 controls the heater 7 to be started; when the temperature of the water supplied from the cooling water inlet pipe 21 to the valve chamber 32 is higher than the dew point of the valve chamber 32 by 4 ℃, the controller 100 controls the heater 7 to stop;
when the centrifugal pump 11 stops running or the flow sensor 91 connected in series with the water outlet of the centrifugal pump 11 detects that the flow of the centrifugal pump 11 is lower than the warning value, the heater 7 stops;
IV, controlling a water supplementing pump:
when the controller 100 monitors that the water level in the buffer tank 52 is lower than the set value, the controller 100 controls the water supplementing pump 13 to operate;
when the controller 100 monitors that the water level in the buffer tank 52 is lower than the warning value, the controller 100 sends a tripping protection instruction to cut off the power supply;
when the controller 100 monitors that the water level in the buffer tank 52 reaches a set value, the controller 100 controls the water supplementing pump 13 to stop;
when the controller 100 monitors that the water level in the raw water tank 51 is lower than the guard value, the controller 100 controls the water replenishment pump 13 to stop.
When the embodiment is used, under the drive of the centrifugal pump 11, cooling water is input into the valve chamber 32 from the cooling water inlet pipe 21, all parts in the valve chamber 32 are cooled through heat exchange, the warmed cooling water is input into the external cooling device 31 through the cooling water outlet pipe 22, and is input into the cooling water inlet pipe 21 again for recycling after being cooled; the raw water pump 12 pumps pure water into the raw water tank 51 for storage, when the flow of cooling water is reduced, the water supplementing pump 13 pumps the pure water in the raw water tank 51, the pure water is filtered by the ion exchanger 6 and the second filter 42, is injected into the cooling water outlet pipe 22 after being stabilized by the buffer tank 52 and deaerated by the deaeration tank 53, and is pumped into the cooling water inlet pipe 21 by the centrifugal pump 11 to participate in cooling the valve chamber 32; the various sensors transmit parameters such as flow, temperature, pressure difference, liquid level, conductivity and the like to the controller 100 in real time, and the controller 100 sends various instructions according to the parameters, so that the valve chamber 32 is ensured to be cooled timely and accurately, and the normal operation of the components is ensured.
Claims (5)
1. A circulating cooling device adopting pure water media comprises a centrifugal pump (11), a cooling water inlet pipe (21), a cooling water outlet pipe (22) and an external cooling device (31), wherein the external cooling device (31) is connected in series between a water inlet of the cooling water inlet pipe (21) and a water outlet of the cooling water outlet pipe (22), a valve chamber (32) to be cooled is connected in series between a water outlet of the cooling water inlet pipe (21) and a water inlet of the cooling water outlet pipe (22), the centrifugal pump (11) is connected on the cooling water outlet pipe (22), a water inlet of the centrifugal pump (11) is connected with a water inlet of the cooling water outlet pipe (22), cooling water is pumped into the valve chamber (32) from the cooling water inlet pipe (21) under the driving of the centrifugal pump (11), the cooling water is pumped into the external cooling device (31) through the cold water outlet pipe (22) after heat exchange temperature rise occurs in the valve chamber (32), the cooling water inlet pipe (21) is cooled after heat exchange temperature drop occurs in the external cooling device (31),
the method is characterized in that: also comprises a raw water pump (12), a water supplementing pump (13), a first filter (41), a second filter (42), a third filter (43), a raw water tank (51), a buffer tank (52), a degassing tank (53), a gas storage tank (54), an ion exchanger (6) and a heater (7),
the water inlet of the raw water pump (12) is connected with a pure water source through a normally open ball valve (81), the water outlet of the raw water pump (12) is connected with the water inlet of a raw water tank (51) through a water pipe which is sequentially connected with a first filter (41) and the normally open ball valve (81) in series, the water outlet of the raw water tank (51) is connected with the water inlet of a water supplementing pump (13) through the normally open ball valve (81), the water outlet of the water supplementing pump (13) is connected with the water inlet of a buffer tank (52) through a water pipe which is sequentially connected with a one-way valve (82), the normally open ball valve (81), an ion exchanger (6), the normally open ball valve (81), a second filter (42) and the normally open ball valve (81) in series, the water outlet of the buffer tank (52) is connected with the water inlet of a centrifugal pump (11) through a water pipe which is sequentially connected with a normally open butterfly valve (83), a degassing tank (53) and a normally open butterfly valve (83), a heater (7) is arranged in the degassing tank (53), the top of the buffer tank (52) is provided with an exhaust valve (84), and the air outlet of the air storage tank (54) is connected with the air inlet of the top of the buffer tank (52) through a gas pipe which is sequentially connected with a normally open pipe in series with the normally open butterfly valve (85).
The water outlet of the cooling water inlet pipe (21) is connected with the water inlet of the valve chamber (32) through a normally open butterfly valve (83), and the water inlet of the cooling water outlet pipe (22) is connected with the water outlet of the valve chamber (32) through the normally open butterfly valve (83);
the third filter (43) is connected in series with the cooling water inlet pipe (21), the water inlet of the third filter (43) is connected with the water inlet of the cooling water inlet pipe (21) through a normally open butterfly valve (83), the water outlet of the third filter (43) is connected with the water outlet of the cooling water inlet pipe (21) through a normally open butterfly valve (83), the water outlet of the third filter (43) is connected with the water inlet of the ion exchanger (6) through a one-way valve (82), and the water outlet of the third filter (43) is also connected with the water inlet of the cooling water outlet pipe (22) through a normally open ball valve (81);
the three-way butterfly valve (86) is provided with a water inlet and two water outlets, the water inlet of the three-way butterfly valve (86) is connected with the water outlet of the centrifugal pump (11), the two water outlets of the three-way butterfly valve (86) are respectively connected with the water inlet of the third filter (43) and the water inlet of the external cooling device (31), and the three-way butterfly valve (86) adjusts the water outlet proportion of the two water outlets through an internal valve rod.
2. The circulation cooling device using pure water medium according to claim 1, wherein: the centrifugal pump (11), the water supplementing pump (13), the second filter (42), the third filter (43), the buffer tank (52), the ion exchanger (6) and the three-way butterfly valve (86) are respectively two, the centrifugal pump (11), the water supplementing pump (13), the second filter (42), the third filter (43), the ion exchanger (6) and the three-way butterfly valve (86) are respectively connected in parallel, and the buffer tanks (52) are connected in series;
the cooling water inlet pipe (21) and the cooling water outlet pipe (22) are connected through a water pipe connected with a normally closed butterfly valve (87) in series; the water inlet and the water outlet of the degassing tank (53) are connected through a water pipe connected with a normally closed butterfly valve (87) in series; the water inlet and the water outlet of the three-way butterfly valve (86) are connected through a water pipe connected with a normally closed butterfly valve (87) in series.
3. The circulation cooling device using pure water medium according to claim 1 or 2, wherein: also comprises a flow sensor (91), a temperature sensor (92), a pressure difference sensor (93), a liquid level sensor (94), a conductivity sensor (95) and a controller (100),
the water outlet of the centrifugal pump (11) is connected with a flow sensor (91) in series; the water outlet of the water supplementing pump (13) is connected with a flow sensor (91) in series; a flow sensor (91) and a temperature sensor (92) are connected in series on the cooling water inlet pipe (21) and the cooling water outlet pipe (22); a temperature sensor (92) is arranged in the valve chamber (32); two ends of the differential pressure sensor (93) are respectively connected with a water inlet and a water outlet of the first filter (41) through a normally open ball valve (81); the water inlet and the water outlet of the second filter (42) are respectively connected in series with a flow sensor (91); two ends of the differential pressure sensor (93) are respectively connected with a water inlet and a water outlet of the third filter (43) through a normally open ball valve (81); a liquid level sensor (94) is arranged in both the raw water tank (51) and the buffer tank (52); a conductivity sensor (95) is arranged in the ion exchanger (6);
the centrifugal pump (11), the raw water pump (12), the water supplementing pump (13), the electromagnetic valve (85), the three-way butterfly valve (86), the flow sensor (91), the temperature sensor (92), the differential pressure sensor (93), the liquid level sensor (94) and the conductivity sensor (95) are all connected with the controller (100) through signal lines.
4. The method for using a circulating cooling apparatus employing pure water medium according to claim 1 or 2, characterized in that: the method comprises the following control steps:
I. centrifugal pump (11) operation control:
when the controller (100) monitors that any one of the following conditions a-e is satisfied, the controller (100) switches the states of the two centrifugal pumps (11) respectively:
a. a centrifugal pump (11) continuously runs 168 hours
b. The flow sensor (91) connected in series with the water outlet of the centrifugal pump (11) detects that the flow of the centrifugal pump (11) is lower than a set value,
c. overload or overheating of the centrifugal pump (11);
d. the centrifugal pump (11) leaks water;
e. a power failure to drive the centrifugal pump (11);
after the controller (11) switches the states of the two centrifugal pumps (11), if the centrifugal pumps (11) in the running state still have the phenomenon b or c, the controller (100) switches the states of the two centrifugal pumps (11) again;
when the controller (100) monitors that the following conditions i and ii are met, the controller (100) sends out a tripping protection instruction to cut off the power supply:
i. the flow rate of at least one of the cooling water inlet pipe (21) and the cooling water outlet pipe (22) is lower than an alarm value, and the flow rate of the water supplementing pump (13) is lower than the alarm value;
ii, when any one of the above b to e exists in the two centrifugal pumps (11) at the same time;
II, three-way butterfly valve (86) control:
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is higher than 28 ℃, the three-way butterfly valve (86) is in a full-open state, cooling water which flows into the three-way butterfly valve (86) from the cooling water outlet pipe (22) and completes heat exchange flows into the external cooling device (31) through one water outlet in a maximum proportion, and corresponding cooling water flows back to the cooling water inlet pipe (21) through the third filter (43) through the other water outlet in a minimum proportion;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is lower than 25 ℃, the three-way butterfly valve (86) is in a fully closed state, cooling water which flows into the three-way butterfly valve (86) from the cooling water outlet pipe (22) and completes heat exchange flows into the external cooling device (31) through one water outlet in a minimum proportion, and corresponding cooling water flows back to the cooling water inlet pipe (21) through the third filter (43) through the other water outlet in a maximum proportion;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is 25-28 ℃, the state of the three-way butterfly valve (86) is between full opening and full closing, and the controller (100) controls the opening degree of the valve rod of the three-way butterfly valve (86) to maintain the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) between 25-28 ℃;
heater control:
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is not higher than 10 ℃, the controller (100) controls the heater (7) to start; when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is not lower than 13 ℃, the controller (100) controls the heater (7) to stop;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is close to the dew point of the valve chamber (32), the controller (100) controls the heater (7) to be started; when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is higher than the dew point 4 ℃ of the valve chamber (32), the controller (100) controls the heater (7) to stop;
when the centrifugal pump (11) stops running or a flow sensor (91) connected in series with the water outlet of the centrifugal pump (11) detects that the flow of the centrifugal pump (11) is lower than a warning value, the heater (7) stops;
IV, controlling a water supplementing pump:
when the controller (100) monitors that the water level in the buffer tank (52) is lower than a set value, the controller (100) controls the water supplementing pump (13) to operate;
when the controller (100) monitors that the water level in the buffer tank (52) is lower than the warning value, the controller (100) sends out a tripping protection instruction to cut off the power supply;
when the controller (100) monitors that the water level in the buffer tank (52) reaches a set value, the controller (100) controls the water supplementing pump (13) to stop;
when the controller (100) monitors that the water level in the raw water tank (51) is lower than the warning value, the controller (100) controls the water supplementing pump (13) to stop.
5. The method for using a circulating cooling apparatus using pure water medium according to claim 3, wherein: the method comprises the following control steps:
I. centrifugal pump (11) operation control:
when the controller (100) monitors that any one of the following conditions a-e is satisfied, the controller (100) switches the states of the two centrifugal pumps (11) respectively:
a. a centrifugal pump (11) continuously runs 168 hours
b. The flow sensor (91) connected in series with the water outlet of the centrifugal pump (11) detects that the flow of the centrifugal pump (11) is lower than a set value,
c. overload or overheating of the centrifugal pump (11);
d. the centrifugal pump (11) leaks water;
e. a power failure to drive the centrifugal pump (11);
after the controller (11) switches the states of the two centrifugal pumps (11), if the centrifugal pumps (11) in the running state still have the phenomenon b or c, the controller (100) switches the states of the two centrifugal pumps (11) again;
when the controller (100) monitors that the following conditions i and ii are met, the controller (100) sends out a tripping protection instruction to cut off the power supply:
i. the flow rate of at least one of the cooling water inlet pipe (21) and the cooling water outlet pipe (22) is lower than an alarm value, and the flow rate of the water supplementing pump (13) is lower than the alarm value;
ii, when any one of the above b to e exists in the two centrifugal pumps (11) at the same time;
II, three-way butterfly valve (86) control:
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is higher than 28 ℃, the three-way butterfly valve (86) is in a full-open state, cooling water which flows into the three-way butterfly valve (86) from the cooling water outlet pipe (22) and completes heat exchange flows into the external cooling device (31) through one water outlet in a maximum proportion, and corresponding cooling water flows back to the cooling water inlet pipe (21) through the third filter (43) through the other water outlet in a minimum proportion;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is lower than 25 ℃, the three-way butterfly valve (86) is in a fully closed state, cooling water which flows into the three-way butterfly valve (86) from the cooling water outlet pipe (22) and completes heat exchange flows into the external cooling device (31) through one water outlet in a minimum proportion, and corresponding cooling water flows back to the cooling water inlet pipe (21) through the third filter (43) through the other water outlet in a maximum proportion;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is 25-28 ℃, the state of the three-way butterfly valve (86) is between full opening and full closing, and the controller (100) controls the opening degree of the valve rod of the three-way butterfly valve (86) to maintain the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) between 25-28 ℃;
heater control:
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is not higher than 10 ℃, the controller (100) controls the heater (7) to start; when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is not lower than 13 ℃, the controller (100) controls the heater (7) to stop;
when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is close to the dew point of the valve chamber (32), the controller (100) controls the heater (7) to be started; when the water supply temperature of the cooling water inlet pipe (21) to the valve chamber (32) is higher than the dew point 4 ℃ of the valve chamber (32), the controller (100) controls the heater (7) to stop;
when the centrifugal pump (11) stops running or a flow sensor (91) connected in series with the water outlet of the centrifugal pump (11) detects that the flow of the centrifugal pump (11) is lower than a warning value, the heater (7) stops;
IV, controlling a water supplementing pump:
when the controller (100) monitors that the water level in the buffer tank (52) is lower than a set value, the controller (100) controls the water supplementing pump (13) to operate;
when the controller (100) monitors that the water level in the buffer tank (52) is lower than the warning value, the controller (100) sends out a tripping protection instruction to cut off the power supply;
when the controller (100) monitors that the water level in the buffer tank (52) reaches a set value, the controller (100) controls the water supplementing pump (13) to stop;
when the controller (100) monitors that the water level in the raw water tank (51) is lower than the warning value, the controller (100) controls the water supplementing pump (13) to stop.
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| CN201610787777.6A CN107787162B (en) | 2016-08-31 | 2016-08-31 | Circulation cooling device adopting pure water medium and application method thereof |
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| CN201610787777.6A CN107787162B (en) | 2016-08-31 | 2016-08-31 | Circulation cooling device adopting pure water medium and application method thereof |
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| CN102394551A (en) * | 2011-09-30 | 2012-03-28 | 广州高澜节能技术股份有限公司 | Direct current transmission converter valve cooling system |
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| CN205279558U (en) * | 2015-12-04 | 2016-06-01 | 上海海鼎实业发展有限公司 | Cooling device of pure water as medium is used in many loads of a confession |
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| US6614353B2 (en) * | 2002-01-14 | 2003-09-02 | Smc Kabushiki Kaisha | Constant-temperature liquid circulating device having a proportional valve based predictive system for pre-estimating a need for maintenance |
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| JP2005345076A (en) * | 2004-06-07 | 2005-12-15 | Daikin Ind Ltd | Cooling device |
| CN102394551A (en) * | 2011-09-30 | 2012-03-28 | 广州高澜节能技术股份有限公司 | Direct current transmission converter valve cooling system |
| CN102566623A (en) * | 2012-01-04 | 2012-07-11 | 广州高澜节能技术股份有限公司 | Control system of direct current power transmission converter valve pure water cooling device |
| CN105781961A (en) * | 2014-12-26 | 2016-07-20 | 宝钢工程技术集团有限公司 | Process pump unit machine seal cooling water circulation reuse device and application method thereof |
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