CN108105587A - A kind of hydraulic type CNG air entraining substation control system and control method - Google Patents
A kind of hydraulic type CNG air entraining substation control system and control method Download PDFInfo
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- CN108105587A CN108105587A CN201711464909.2A CN201711464909A CN108105587A CN 108105587 A CN108105587 A CN 108105587A CN 201711464909 A CN201711464909 A CN 201711464909A CN 108105587 A CN108105587 A CN 108105587A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 105
- 239000010959 steel Substances 0.000 claims abstract description 105
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 25
- 230000010355 oscillation Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 176
- 239000007788 liquid Substances 0.000 claims description 98
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 30
- 238000011017 operating method Methods 0.000 claims description 20
- 239000003345 natural gas Substances 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a kind of hydraulic type CNG air entraining substation control system and control method, air entraining substation system includes fluid pressure type long tube semitrailer and hydraulic substation supercharging sledge, gas convergence manifold on semitrailer leads to semitrailer rear portion from semitrailer forepart, CNG quick couplings are connected to, are connected with the gas piping of hydraulic substation supercharging sledge；The invention can realize automatically controlling for hydraulic substation operation overall process, without manual intervention by the pipe-line system of air entraining substation and CNG semitrailers；CNG surpluses and pressure in steel cylinder can be monitored in real time, on the basis of air entraining substation system normal operation is ensured, ftercompction operation can be performed to the CNG in non-fluid injection steel cylinder automatically, solve the problems, such as the pressure oscillation in fueling process, the aerating disruption especially switched in bottle group operating process is addressed, avoiding needs that the problem of balancing pressure is manually operated in the prior art, and the frequent starting of motor is avoided due to automatically continuously running reduces operation energy consumption.
Description
Technical field
The invention belongs to fluid pressure type CNG (Compressed Natural Gas) air entraining substation system technical fields, are related to
To fluid pressure type air entraining substation control system and control method.
Background technology
Natural gas is worldwide used widely as a kind of clear energy sources.Wherein using natural gas as combustion
The equipment such as material driving automobile, then as the very important aspect in gas utilization field；For the convenience transported, loaded and raising
Its efficiency, usually natural gas, which need to pressurize, becomes compressed natural gas (Compressed Natural Gas)；Compressed natural gas
(CNG) automobile needs special fuel conveying and loading system；The system Construction then claims at the place away from gas distributing system
For gas filling sub-station system；
Chinese patent literature CN1486409A discloses a kind of hydraulic type CNG air entraining substation service system, the CNG of the system
Transport vehicle is made of multigroup vertical steel cylinder, then the mother station filling CNG of steel cylinder a long way off transports air entraining substation system, adding
Hydraulic fluid by the fluidic interface of steel cylinder upper end, from liquid storage tank is pumped into each steel cylinder, made by gas substation system
CNG is forced through another gas interface discharge of steel cylinder upper end, and CNG flows through hose and entered by filling machine in fuel vehicle to be added；
When steel cylinder empties, the residual pressure at the top of hose and steel cylinder makes hydraulic fluid be discharged by force from steel cylinder and returns to fluid storage
In tank；Since transport vehicle is made of the vertical small volume steel cylinder of Numerous in the invention, and only steel cylinder upper end set liquid and
Gas interface, causes that pipe-line system is very numerous and diverse, amount of parts is numerous, can not realize automatically controlling for real meaning, cause
Substation aerating poor continuity；Since the liquids and gases interface latus rectum in gas cylinder is smaller, aerating speed and the confession of system are limited
Gas ability；
Chinese patent literature CN2905752Y discloses another hydraulic type CNG air entraining substation service system, the system
CNG conveying semi-trailers are horizontally fixed on by 8 big volume steel cylinder in semi-mounted frame, and CNG conveying semi-trailers are with 8 in the invention
Steel cylinder is significantly reduced instead of numerous small steel cylinders in former technology, valves and fittings quantity, and pipe-line system is simplified, fueling process
It largely realizes and automatically controls, but the control method still has the problem of aerating pressure oscillation is larger, in order to stablize supply
Pressure needs to be manually operated, and aerating speed and gas supply capacity without be improved significantly, the control method is due to pressure process
Middle hydraulic pump frequent starting, also results in the waste of electric energy；
Therefore, automatically controlling for hydraulic substation system overall process how is realized；How to keep pressure stability in fueling process,
Reduce pressure oscillation；And how to improve hydraulic substation gas supply capacity and reduce energy expenditure, become in the art urgently to be resolved hurrily
The technical issues of；
There are problem and shortcomings for the prior art：
1st, original air entraining substation system CNG semitrailers disclosed in Chinese patent literature CN1486409A use multigroup vertical small steel
Bottle, causes that pipe-line system is very numerous and diverse, amount of parts is numerous, and substation system can not realize automatically controlling for real meaning；In
Though the prior art disclosed in state patent document CN2905752Y has improvement, this could not be solved the problems, such as at all；
2nd, former air entraining substation system is really automatically controlled due to can not achieve, aerating poor continuity and aerating pressure oscillation
Greatly, continuous aerating for a long time can not be met；The prior art disclosed in Chinese patent literature CN2905752Y, aerating continuity are more former
Technology has some to improve, but when steel cylinder operation is switched in substation system execution, fueling process still occurs being difficult to the pressure overcome
Fluctuation and aerating interruption phenomenon；
3rd, the vertical small steel cylinder of former air entraining substation system CNG semitrailers disclosed in Chinese patent literature CN1486409A, only exists
Steel cylinder upper end sets fluidic interface and gas interface, the circulation area very little of interface, makes the gas supply capacity of substation can not improve；In
Though the prior art disclosed in state patent document CN2905752Y is using big volume steel cylinder, since the limitation of control mode still could not
This is solved the problems, such as at all；
4th, the prior art disclosed in Chinese patent literature CN2905752Y, existing to stablize supply gas pressure needs to be manually operated
The problem of being balanced is not carried out automatically controlling truly；Due to hydraulic pump frequent starting and people in pressure process
To intervene, the waste of electric energy is also resulted in.
The content of the invention
In view of this, the invention is directed to a kind of hydraulic type CNG air entraining substation system and control method, solves liquid
The technical issues of pressing air entraining substation system aerating poor continuity and insufficient gas supply capacity；It solves fueling process neutralization and switches bottle group behaviour
Pressure oscillation problem during work.
In order to achieve the above objectives, the technical solution of the invention is realized in：
A kind of hydraulic type CNG air entraining substation control system is pressurized sledge, partly including fluid pressure type long tube semitrailer and hydraulic substation
Gas convergence manifold on trailer leads to semitrailer rear portion from semitrailer forepart, is connected to CNG quick couplings, increases with hydraulic substation
The gas piping of pressure sledge is connected；
Wherein, liquid storage tank, high-pressure pump, fluid injection return hydraulic control valve group, natural gas are included inside hydraulic substation supercharging sledge
Surge flask；The liquid ready-packaged joint of the operation rear portion orlop plate arranged on left and right sides of semitrailer is taken over by fluid injection return hydraulic control valve
Group and high-pressure pump after with liquid storage tank unicom；The gas piping unicom of hydraulic substation supercharging sledge is buffered in natural gas on gas cylinder,
Aerating control valve is set in the output terminal of natural gas buffering gas cylinder, aerating control valve is connected with external filling machine.
Preferably, on semitrailer on horizontal positioned eight steel cylinders, semitrailer rear portion, steel cylinder C1 and steel cylinder C2 are respectively through C1
Liquid ball valve, C2 liquid ball valve, liquid line connect together, and then form the first gas cylinder through the first grouping liquid pneumatic ball valve
Grouping；The steel cylinder C3 and steel cylinder C4 connects together respectively through C3 liquid ball valve, C4 liquid ball valve, liquid line, Ran Houjing
3rd grouping liquid pneumatic ball valve forms the grouping of the 3rd gas cylinder；Steel cylinder C5 and steel cylinder C6 is formed through second packet liquid pneumatic ball valve
Second gas cylinder is grouped, and steel cylinder C7 and steel cylinder C8 form the 4th gas cylinder through the 4th grouping liquid pneumatic ball valve and be grouped；
First grouping liquid pneumatic ball valve and the 3rd grouping liquid pneumatic ball valve are connected together by pipeline, are connected by the road
The liquid ready-packaged joint being connected on the left of the operation orlop plate of semitrailer is connected with the liquid line of hydraulic substation supercharging sledge；Second
Grouping liquid pneumatic ball valve and the 4th grouping liquid pneumatic ball valve are connected together by pipeline, are connected to semitrailer by the road
The liquid ready-packaged joint on the right side of orlop plate is operated, is connected with the liquid line of hydraulic substation supercharging sledge；In semitrailer forepart, steel cylinder
C1 and steel cylinder C2 connect together respectively through C1 gas ball valves and C2 gas ball valves, gas piping, then through gas pneumatic ball valve
It is connected to gas convergence pipe；Steel cylinder C3 and steel cylinder C4 are attempted by one through C3 gas ball valves and C4 gas ball valves, gas piping respectively
It rises, is then connected to gas convergence pipe through gas pneumatic ball valve；According to same connection mode, steel cylinder C5 and steel cylinder C6, steel cylinder
C7 and steel cylinder C8 is connected to gas convergence manifold via their own gas ball valve, gas piping and gas pneumatic ball valve.
Preferably, taking over equipped with pressure sensor in liquid ready-packaged joint, pressure sensor is for monitoring liquid in real time
The pressure of body, CNG provides pressure information for PLC.
Preferably, fluid injection return hydraulic control valve group is made of four pneumatic control valves, is switched for performing bottle group and is realized note
Liquid and time liquid operation.
A kind of hydraulic type CNG air entraining substation system control method, including selected operation gas cylinders group and ftercompction gas cylinders group；
Wherein, the operating procedure for running gas cylinders group is：
(S000), according to predetermined set, selection operation gas cylinders group；
(S001), the gas ball valve of operation gas cylinders group is opened, performs the fueling process for treating aerating equipment；
(S002), the gas valve of current operation gas cylinders group, and return to step (S000) are closed；
Wherein, the operating procedure of ftercompction gas cylinders group is：
(S100), according to predetermined set, selection needs the gas cylinders group of ftercompction；
(S101), when ftercompction bottle group is with operation bottle group pressure balance, ftercompction bottle group gas valve is opened completely；
(S102), other bottles of groups are selected as ftercompction bottle group.
Preferably, in operating procedure, (between S000 and step (S001), the operation of described pair of operation gas cylinders group further includes：
When running bottle group pressure less than setting value, hydraulic substation supercharging sledge control system is pressurized bottle group, makes operation bottle group CNG
Pressure reaches setting value, to ensure the stabilization of aerating pressure.
Preferably, between operating procedure (S001) and step (S002), the operation of described pair of operation gas cylinders group further includes：
In fueling process when running bottle group pressure less than setting value, hydraulic substation supercharging sledge control system is pressurized bottle group,
Operation bottle group CNG pressure is made to reach setting value；When running bottle group CNG surpluses less than setting value, hydraulic substation supercharging sledge selection
Subsequent bottle group performs aerating operation as new operation bottle group；And (S002) step is performed, close the gas of current operation bottle group
Body valve makes currently to run the disengaging aerating operation of bottle group, further performs back liquid operating procedure.
Preferably, between operating procedure (S100) and step (S101), the operation to ftercompction gas cylinders group further includes：
When running bottle group pressure higher than setting value and stablizing, the gas of ftercompction bottle group is opened in hydraulic substation supercharging sledge control system control
Valve carries out ftercompction operation to bottle group；When running the pressure oscillation of bottle group and having downward trend, the gas trap of ftercompction bottle group is closed
Door stops ftercompction operation；This two operating procedures are so performed repeatedly, until ftercompction bottle group pressure and operation bottle group pressure balance
Shi Zhihang (S101) step opens the gas valve of ftercompction bottle group completely.
Preferably, after ftercompction bottle group gas valve is opened completely, perform (S102) step and select other at least one set of bottles
It is new ftercompction bottle group to organize, and return to step (S100)；So Xun Huan until all follow-up bottle group whole ftercompctions finish, makes institute
There is bottle group to be all added in aerating operational process.
Compared with the prior art, hydraulic pressure CNG air entraining substation systems and control method described in the invention have following
Advantage：
The hydraulic pressure air entraining substation system and control method of the present invention, passes through air entraining substation system and the pipeline of CNG semitrailers
System can realize automatically controlling for hydraulic substation operation overall process, without manual intervention；CNG in steel cylinder can be monitored in real time
Surplus and pressure on the basis of air entraining substation system normal operation is ensured, can perform benefit to the CNG in non-fluid injection steel cylinder automatically
Press operation solves the problems, such as the pressure oscillation in fueling process, and the aerating disruption especially switched in bottle group operating process obtains
Manual operation balance pressure is needed in the prior art to solve the problem of to avoid, due to automatically continuously avoiding the frequent of pump motor
Startup reduces operation energy consumption；The autocontrol method of the present invention passes through substation and the pipe-line system of CNG semitrailers, realization pair
Every two steel cylinder synchronizations fluid injection supercharging, synchronous aerating return liquid operating procedure with synchronous in CNG semi-mounted frames, solve hydraulic pressure aerating
The technical issues of substation system aerating poor continuity and insufficient gas supply capacity.
Description of the drawings
The attached drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made does not form the improper restriction to the invention for explaining the invention.
In attached drawing：
Fig. 1 is the hydraulic pressure air entraining substation system system diagram described in the invention embodiment；
Fig. 2 is the automatic control flow chart figure described in the invention；
Fig. 3 is storekeeper figure after operation after the CNG semitrailers described in the invention；
Fig. 4 is storekeeper figure before operation after the CNG semitrailers described in the invention；
Fig. 5 is that the substation trailer described in the invention is connected example with filling machine；
Fig. 6 is that the substation trailer described in the invention is connected second of example with filling machine；
Reference sign：
C1-C8 steel cylinders, 1- hydraulic substations supercharging sledge, 2- fluid injection return hydraulic control valve groups, 3- pressure sensors, 4- aeratings control
Valve, 5- filling machines, 6- treat aerating equipment, 7- liquid ready-packaged joints, 8-CNG quick couplings, first bottle of group liquid pneumatic ball valve of 9-,
Second bottle of group liquid pneumatic ball valve of 10-, 11- steel cylinder C1 liquid ball valves, 12- steel cylinder C2 liquid ball valves, 13- steel cylinder C3 liquid spheres
Valve, 14- steel cylinder C4 liquid ball valves, the 3rd bottle of group liquid pneumatic ball valve of 15-, the 4th bottle of group liquid pneumatic ball valve of 16-, 17- steel cylinders
C1 gas ball valves, 18- steel cylinder C2 gas ball valves, 19- steel cylinder C3 gas ball valves, 20- steel cylinder C4 gas ball valves, first bottle of group of 21-
Gas pneumatic ball valve, second bottle of group gas pneumatic ball valve of 22-, the 3rd bottle of group gas pneumatic ball valve of 23-, the 4th bottle of group gases of 24-
Pneumatic ball valve, 25-CNG headroom sensors, 26- semitrailers.
Specific embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the invention can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the invention
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments creates.
With reference to shown in Fig. 1, a kind of hydraulic type CNG air entraining substation control system, including fluid pressure type long tube semitrailer 26, half
Upper horizontal positioned 8 steel cylinder C1-C8 on trailer 26, semitrailer rear portion, steel cylinder C1 and steel cylinder C2 are respectively through C1 liquid ball valve 11, C2
Liquid ball valve 12, liquid line connect together, and then form the grouping of the first gas cylinder through the first grouping liquid pneumatic ball valve 9；Institute
It states steel cylinder C3 and steel cylinder C4 to connect together through C3 liquid ball valve 13, C4 liquid ball valve 14, liquid line respectively, then through the 3rd
It is grouped liquid pneumatic ball valve 10 and forms the grouping of the 3rd gas cylinder；According to same connection mode, steel cylinder C5 and steel cylinder C6 are through second point
Group liquid pneumatic ball valve 15 forms the grouping of the second gas cylinder, steel cylinder C7 and steel cylinder C8 and forms the through the 4th grouping liquid pneumatic ball valve 16
Four gas cylinders are grouped；
With reference to shown in Fig. 1 and Fig. 3, the first grouping liquid pneumatic ball valve 9 and the 3rd grouping liquid pneumatic ball valve 10 pass through pipe
Road connects together, the liquid ready-packaged joint 7 being connected to by the road on the left of the operation orlop plate of semitrailer 26, increases with hydraulic substation
The liquid line of pressure sledge 1 is connected；Second packet liquid pneumatic ball valve 15 and the 4th is grouped liquid pneumatic ball valve 16 by pipeline simultaneously
It is connected together, the liquid ready-packaged joint 7 being connected to by the road on the right side of the operation orlop plate of semitrailer 26 is pressurized sledge with hydraulic substation
1 liquid line is connected；In 26 forepart of semitrailer, steel cylinder C1 and steel cylinder C2 are respectively through C1 gas ball valves 17 and C2 gas ball valves
18th, gas piping connects together, and is then connected to gas convergence pipe through gas pneumatic ball valve 21；Steel cylinder C3 and steel cylinder C4 difference
It connects together through C3 gas ball valves 19 and C4 gas ball valves 20, gas piping, is then connected to gas through gas pneumatic ball valve 22
Body convergence pipe；According to same connection mode, steel cylinder C5 and steel cylinder C6, steel cylinder C7 and steel cylinder C8 are via their own gaseous sphere
Valve, gas piping and gas pneumatic ball valve are connected to gas convergence manifold；
With reference to shown in Fig. 1, hydraulic substation supercharging sledge 1 is further included, gas convergence manifold leads to semi-mounted from 26 forepart of semitrailer
Vehicle rear portion is connected to CNG quick couplings 8, is connected with the gas piping of hydraulic substation supercharging sledge 1；
Wherein, hydraulic substation supercharging sledge 1 inside includes liquid storage tank, high-pressure pump, fluid injection return hydraulic control valve group 2, natural
Gas surge flask；The liquid ready-packaged joint 7 of the operation orlop plate arranged on left and right sides of semitrailer 26 is taken over by fluid injection return hydraulic control valve
Group 2 and high-pressure pump after with liquid storage tank unicom；For carrying out blower operations to gas cylinders group injection hydraulic medium；Hydraulic substation increases
Press the gas piping unicom of sledge 1 that aerating control valve is set in the output terminal of natural gas buffering gas cylinder on natural gas buffering gas cylinder
4, aerating control valve 4 is connected with external filling machine 5；For performing aerating operation, filling machine 5 is used for to be added aerating control valve 4
6 aerating of gas equipment；
Wherein, taking over equipped with pressure sensor 3 in liquid ready-packaged joint 7, pressure sensor 3 is for monitoring liquid in real time
The pressure of body, CNG provides pressure information for PLC；
Wherein, fluid injection return hydraulic control valve group 2 is made of 4 pneumatic control valves, is switched for performing bottle group and is realized fluid injection
It is operated with liquid is returned；
With reference to shown in Fig. 2 and Fig. 5, Fig. 6, a kind of hydraulic type CNG air entraining substation system control method, including selected operation gas
Bottle group and ftercompction gas cylinders group；
Wherein, the operating procedure for running gas cylinders group is：
S000, according to predetermined set, selection operation gas cylinders group；
S001 opens the gas ball valve of operation gas cylinders group, performs the fueling process for treating aerating equipment；
S002 closes the gas valve of current operation gas cylinders group, and return to step S000.
Wherein, the operating procedure of ftercompction gas cylinders group is：
S100, according to predetermined set, selection needs the gas cylinders group of ftercompction；
S101 when ftercompction bottle group is with operation bottle group pressure balance, opens ftercompction bottle group gas valve completely；
S102 selects other bottles of groups as ftercompction bottle group.
Wherein, between operating procedure S000 and step S001, the operation of described pair of operation gas cylinders group further includes：It is running
When bottle group pressure is less than setting value, hydraulic substation supercharging sledge control system is pressurized bottle group, reaches operation bottle group CNG pressure
To setting value, to ensure the stabilization of aerating pressure；
Wherein, between operating procedure S001 and step S002, the operation of described pair of operation gas cylinders group further includes：In aerating
In the process when running bottle group pressure less than setting value, hydraulic substation supercharging sledge 1 is pressurized bottle group, makes operation bottle group CNG
Pressure reaches setting value；When running bottle group CNG surpluses less than setting value, hydraulic substation supercharging sledge 1 selects subsequent bottle group to make
For new operation bottle group, aerating operation is performed；And S002 steps are performed, the gas valve of current operation bottle group is closed, is made current
It runs bottle group and departs from aerating operation, further perform back liquid operating procedure；
Wherein, between operating procedure S100 and step S101, the operation to ftercompction gas cylinders group further includes：It is running
For bottle group pressure higher than setting value and when stablizing, the gas valve of ftercompction bottle group is opened in the hydraulic substation supercharging control of sledge 1, to bottle group into
Row ftercompction operates；When running the pressure oscillation of bottle group and having downward trend, the gas valve of ftercompction bottle group is closed, stops ftercompction behaviour
Make；This two operating procedures are so performed repeatedly, until ftercompction bottle group pressure during operation bottle group pressure balance with performing S101 steps
Suddenly, the gas valve of ftercompction bottle group is opened completely；
Wherein, after ftercompction bottle group gas valve is opened completely, perform S102 steps select other at least one set of bottle groups for
New ftercompction bottle group, and return to step S100；So Xun Huan until all follow-up bottle group whole ftercompctions finish, makes all bottles of groups
It is all added in aerating operational process.
The invention is except above-mentioned hardware system, it is also necessary to including existing control system, control system in this field
It does not repeat herein, the control system of processing unit, data message collector unit and execution unit composition；The processing unit
It is formed including the PLC in switch board and its expansion module；The data and information collection unit by switch board man-machine interface,
Substation supercharging sledge in and semitrailer on temperature sensor, pressure sensor, level detector, gas-liquid survey meter, gas surplus
Detector forms；The execution unit is pressurized by intermediate relay, solenoid valve and the substation in switch board in sledge and CNG semi-mounteds
Pneumatic actuator forms on vehicle；
Reference Fig. 1-6, the concrete operations order of the invention when hydraulic substation supercharging sledge 1 performs fluid injection operation, control
System control hydraulic booster pump, the first grouping steel cylinder C1 and C2 fluid injection supercharging being synchronized to first in the area of left side, steel cylinder C1 and C2
After the completion of fluid injection (i.e. CNG in steel cylinder C1 and C2 is pushed out 96-97%), control system control steel cylinder C1 is synchronous with C2 execution to return
Liquid operates.Meanwhile synchronous second packet steel cylinder C3 and the C4 fluid injection for right side region of hydraulic booster pump, treat that steel cylinder C3 and C4 fluid injection is complete
Cheng Hou automatically controls the steel cylinder C3 liquid that returns synchronous with C4 execution and operates.At the same time, hydraulic booster pump is synchronous for the in the area of left side the 3rd
Steel cylinder C5 and C6 fluid injection is grouped, is so cycled, until completing the fluid injection of the 4th grouping steel cylinder C7 and C8 and returning liquid operation.
When hydraulic booster is pumped and is pressurized to the first grouping steel cylinder C1 and C2 fluid injection in the area of left side, forepart operation storehouse first is divided
The gas inlet and outlet pneumatic ball valve of group steel cylinder C1 and C2, which are opened, carries out aerating operation, is ensureing the premise of the normal aerating of substation system
Under, the gas inlet and outlet pneumatic ball valve of second packet steel cylinder C3 and C4 are opened in control system control, and steel cylinder C3 and C4 are fallen
Blower operations step, when CNG pressure reaches setting value in second packet steel cylinder C3 and C4, second packet steel cylinder C3 and C4 are into just
Chang Jiaqi modes of operation；Further, substation system carries out the step of falling blower operations to the 3rd grouping steel cylinder C5 and C6, performs such as
This step until completing the blower operations of falling of the 4th grouping steel cylinder C7 and C8, makes 8 steel cylinders of four groupings all be grasped into aerating
Make state.
The technical issues of present invention can solve is as follows：
First technical problem that the present invention solves is that control mode of the invention is performed in the gas cylinders group of operation and added
In gas operating process, the gas cylinders group for needing ftercompction can be taken into account, after the gas cylinders group CNG pressure of operation reaches setting value, is automatically
The gas cylinders group of ftercompction is needed to carry out ftercompction operation, avoids needing situation about manually intervening in the prior art, reduces fueling process
In pressure oscillation, make aerating pressure all-the-time stable in setting range, improve the satisfaction of client；
Second technical problem that the invention solves is that control mode of the invention can be in the gas cylinder of operation
Group is performed in aerating operating process, takes into account the gas cylinders group for needing ftercompction, after the gas cylinders group CNG pressure of operation reaches setting value, from
Move to need the gas cylinders group of ftercompction to carry out ftercompction operation, until CNG pressure also reaches setting value in the gas cylinders group for need ftercompction；It is running
Gas cylinders group perform back liquid operation, when the gas cylinders group of ftercompction being needed to switch to the gas cylinders group of operation, can isobaric smooth conversion, avoid
Aerating disruption during steel cylinder is converted in the prior art；
The 3rd technical problem that the invention solves is, provides a kind of semitrailer steel cylinder grouping connection scheme, makes
The circulation area increase of the circulation area of semitrailer rear operating storehouse liquid line and forepart operation storehouse gas piping, to improve liquid
Press the speed of CNG substation fluid injections and aerating；
The 4th technical problem that the invention solves is, provides a kind of steel cylinder grouping scheme and pipe-line system,
The fluid injection of hydraulic substation packet synchronization, aerating and the mode of operation for returning liquid are realized, improves the gas supply capacity of air entraining substation system；
The 5th technical problem that the invention solves is that control mode of the invention can monitor operation automatically
The pressure of CNG in gas cylinders group and the gas cylinders group for needing ftercompction, and supercharging is carried out according to setting operating pressure value automatically and is operated with ftercompction,
Booster motor frequent starting and the stopping in pressurization in the prior art are avoided, reduces energy expenditure；
Compared with prior art, the monitoring to CNG pressure and CNG storages can be realized in operational process, and according to monitoring
To information be automatically performed the gas cylinders group of operation and need ftercompction gas cylinders group conversion, without manual intervention, reduce operating cost；
Matched trailer has the characteristics that pipe-line system is simple, manufacture is at low cost, failure rate is low and reliability is high, can realize liquid
The continuity of air entraining substation system aerating is pressed, improves the gas supply capacity of substation system；The hydraulic type CNG air entraining substation system of the present invention
System control method has the characteristics that high degree of automation and operation operating procedure setting are scientific and reasonable, can realize hydraulic pressure aerating
The continuity of substation system aerating, aerating pressure stability improve the gas supply capacity of substation system.
The present invention has universal applicability, different to following trailer steel cylinder quantity (from 2 to 12) grouping scheme
Pipe-line system and substation system are equally applicable.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modifications, equivalent replacements and improvements are made should be included in the invention
Protection domain within.
Claims (9)
1. a kind of hydraulic type CNG air entraining substation control system, which is characterized in that including fluid pressure type long tube semitrailer and hydraulic substation
Sledge is pressurized, the gas convergence manifold on semitrailer leads to semitrailer rear portion from semitrailer forepart, is connected to CNG quick couplings, with
The gas piping of hydraulic substation supercharging sledge is connected；
Wherein, liquid storage tank, high-pressure pump, fluid injection return hydraulic control valve group, natural gas buffering are included inside hydraulic substation supercharging sledge
Bottle；The liquid ready-packaged joint of the rear operating orlop plate arranged on left and right sides of semitrailer take over by fluid injection return hydraulic control valve group and
After high-pressure pump with liquid storage tank unicom；The gas piping unicom of hydraulic substation supercharging sledge is on natural gas buffering gas cylinder, in day
The output terminal of right gas buffering gas cylinder sets aerating control valve, and aerating control valve is connected with external filling machine.
2. a kind of hydraulic type CNG air entraining substation control system as described in claim 1, which is characterized in that on semitrailer
Horizontal positioned eight steel cylinders, semitrailer rear portion, steel cylinder C1 and steel cylinder C2 are respectively through C1 liquid ball valve, C2 liquid ball valve, liquid line
Road connects together, and then forms the grouping of the first gas cylinder through the first grouping liquid pneumatic ball valve；C4 points of the steel cylinder C3 and steel cylinder
It does not connect together through C3 liquid ball valve, C4 liquid ball valve, liquid line, then forms the through the 3rd grouping liquid pneumatic ball valve
Three gas cylinders are grouped；Steel cylinder C5 and steel cylinder C6 forms the grouping of the second gas cylinder, steel cylinder C7 and steel cylinder through second packet liquid pneumatic ball valve
C8 forms the grouping of the 4th gas cylinder through the 4th grouping liquid pneumatic ball valve；
First grouping liquid pneumatic ball valve and the 3rd grouping liquid pneumatic ball valve are connected together by pipeline, are connected to by the road
Liquid ready-packaged joint on the left of the operation orlop plate of semitrailer is connected with the liquid line of hydraulic substation supercharging sledge；Second packet
Liquid pneumatic ball valve and the 4th grouping liquid pneumatic ball valve are connected together by pipeline, are connected to the operation of semitrailer by the road
Liquid ready-packaged joint on the right side of orlop plate is connected with the liquid line of hydraulic substation supercharging sledge；In semitrailer forepart, steel cylinder C1 and
Steel cylinder C2 connects together respectively through C1 gas ball valves and C2 gas ball valves, gas piping, is then connected through gas pneumatic ball valve
It converges and manages to gas；Steel cylinder C3 and steel cylinder C4 connect together respectively through C3 gas ball valves and C4 gas ball valves, gas piping, so
Gas convergence pipe is connected to by gas pneumatic ball valve；According to same connection mode, steel cylinder C5 and steel cylinder C6, steel cylinder C7 and steel
Bottle C8 is connected to gas convergence manifold via their own gas ball valve, gas piping and gas pneumatic ball valve.
3. a kind of hydraulic type CNG air entraining substation control system as described in claim 1, which is characterized in that in the fast attaching of liquid
Head is taken over equipped with pressure sensor.
A kind of 4. hydraulic type CNG air entraining substation control system as described in claim 1, which is characterized in that fluid injection return hydraulic control
Valve group is made of four pneumatic control valves, for perform bottle group switch and realize fluid injection and return liquid operation.
5. a kind of hydraulic type CNG air entraining substation system control method, using a kind of fluid pressure type CNG aeratings described in claim 2
Substation control system selectes operation gas cylinders group and ftercompction gas cylinders group；It is characterized in that,
Wherein, the operating procedure for running gas cylinders group is：
(S000), according to predetermined set, selection operation gas cylinders group；
(S001), the gas ball valve of operation gas cylinders group is opened, performs the fueling process for treating aerating equipment；
(S002), the gas valve of current operation gas cylinders group, and return to step (S000) are closed；
Wherein, the operating procedure of ftercompction gas cylinders group is：
(S100), according to predetermined set, selection needs the gas cylinders group of ftercompction；
(S101), when ftercompction bottle group is with operation bottle group pressure balance, ftercompction bottle group gas valve is opened completely；
(S102), other bottles of groups are selected as ftercompction bottle group.
6. a kind of hydraulic type CNG air entraining substation system control method as claimed in claim 5, which is characterized in that walked in operation
Suddenly between (S000) and step (S001), the operation of described pair of operation gas cylinders group further includes：In operation bottle group pressure less than setting
During value, hydraulic substation supercharging sledge control system is pressurized bottle group, and operation bottle group CNG pressure is made to reach setting value, to ensure
The stabilization of aerating pressure.
7. a kind of hydraulic type CNG air entraining substation system control method as claimed in claim 5, which is characterized in that walked in operation
Suddenly between (S001) and step (S002), the operation of described pair of operation gas cylinders group further includes：When operation bottle group in fueling process
When pressure is less than setting value, hydraulic substation supercharging sledge control system is pressurized bottle group, reaches operation bottle group CNG pressure and sets
Definite value；When running bottle group CNG surpluses less than setting value, hydraulic substation supercharging sledge selects subsequent bottle group as new operation bottle
Group performs aerating operation；And (S002) step is performed, the gas valve of current operation bottle group is closed, makes currently to run bottle group and takes off
It is operated from aerating, further performs back liquid operating procedure.
8. a kind of hydraulic type CNG air entraining substation system control method as claimed in claim 5, which is characterized in that walked in operation
Suddenly between (S100) and step (S101), the operation to ftercompction gas cylinders group further includes：In operation bottle group pressure higher than setting
When being worth and stablizing, the gas valve of ftercompction bottle group is opened in hydraulic substation supercharging sledge control system control, and ftercompction behaviour is carried out to bottle group
Make；When running the pressure oscillation of bottle group and having downward trend, the gas valve of ftercompction bottle group is closed, stops ftercompction operation；So
This two operating procedures are performed repeatedly, until ftercompction bottle group pressure during operation bottle group pressure balance with performing (S101) step, it is complete
The full gas valve for opening ftercompction bottle group.
9. a kind of hydraulic type CNG air entraining substation system control method as claimed in claim 5, which is characterized in that in ftercompction bottle
After group gas valve is opened completely, it is new ftercompction bottle group to perform (S102) step and select other at least one set of bottle groups, and is returned
Step (S100)；So Xun Huan until all follow-up bottle group whole ftercompctions finish, makes all bottles of groups all be added to aerating and ran
Cheng Zhong.
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