CN204629077U - CNG air entraining substation trailer pipe-line system and CNG air entraining substation system - Google Patents
CNG air entraining substation trailer pipe-line system and CNG air entraining substation system Download PDFInfo
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- CN204629077U CN204629077U CN201520172624.1U CN201520172624U CN204629077U CN 204629077 U CN204629077 U CN 204629077U CN 201520172624 U CN201520172624 U CN 201520172624U CN 204629077 U CN204629077 U CN 204629077U
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Abstract
The utility model discloses CNG air entraining substation trailer pipe-line system, it comprises the trailer being provided with multiple steel cylinder, described steel cylinder divides into groups between two, and be divided into even number set, described even number set steel cylinder is divided into two-part again, liquid inlet/outlet pipe in every part steel cylinder group is connected in parallel together, and the gas inlet/outlet pipe that each group steel cylinder is positioned at gas inlet and outlet pneumatic ball valve rear end is connected in parallel in gas and converges on pipe.The invention also discloses the CNG air entraining substation system with above-mentioned CNG air entraining substation trailer pipe-line system structure.This CNG air entraining substation system can ensure the continuity of air feed in steel cylinder air feed process, also has good stable gas pressure, and system pipeline structure is simple, is convenient to control, has good practicability.
Description
Technical field
The utility model relates to a kind of compressed natural gas (CNG) aerating technical field, particularly relates to a kind of CNG air entraining substation trailer pipe-line system, and the utility model also relates to a kind of CNG air entraining substation system with above-mentioned CNG air entraining substation trailer pipe-line system structure.
Background technique
Rock gas, as a kind of clean energy resource, is worldwide used widely, and is wherein the equipment such as the automobile of fuel driven with rock gas, then becomes very important aspect, gas utilization field.In order to transport, the convenience of loading etc. and improve its utilization ratio, usually need rock gas to add and be pressed into compressed natural gas (CNG), automobile with compressed natural gas needs special fuel area density and loading system, this system Construction away from gas distributing system local time, be then called natural gas automobile secondary gas filling station.As Chinese invention patent application CN1486409A discloses a kind of compressed natural gas dispensing system, the CNG transport vehicle of this system forms by organizing vertical steel cylinder more, steel cylinder mother station a long way off fills CNG, then air entraining substation is transported to, at air entraining substation by the fluidic interface of hydraulic fluid by steel cylinder upper end, be pumped into from liquid storage tank in each steel cylinder, another gas interface making CNG be forced through steel cylinder upper end is discharged, and CNG is flowed through flexible pipe and entered in fuel vehicle to be added by filling machine.When steel cylinder is emptying, the residual pressure at flexible pipe and steel cylinder top makes hydraulic fluid discharge from steel cylinder by force and turn back to liquid storage tank.This system has certain improvement relative to using the CNG air entraining substation of gas compressor, but this system aerating continuity is poor, and automatic controlling extent is lower, the gas supply capacity of meeting restriction system.
And Chinese utility model patent CN202915048U discloses a kind of high-efficiency and energy-saving type huge discharge two-wire hydraulic pressure secondary gas refueling station, it comprises hydraulic substation CNG transtainer, hydraulic booster prying body, electric control system and filling machine four part, hydraulic substation CNG transtainer connects the hydraulic circuit ready-packaged joint on hydraulic booster prying body operating table respectively by high pressure hose, exhaust gas circuit ready-packaged joint and jacking block ready-packaged joint, the gas exhaust piping of hydraulic booster prying body is connected on filling machine, electric control system connects the control module of hydraulic substation CNG transport vehicle and hydraulic booster prying body respectively by electrical pipeline.This device is energy-efficient, and aerating ability is large, but because of its high low pressure switch mode adopted, gas pressure less stable, also more loaded down with trivial details in control, and filling machine has also needed high low pressure two pipeline structure, causes its versatility poor.
Model utility content
For solving the deficiencies in the prior art, the utility model provides a kind of CNG air entraining substation trailer pipe-line system, and it can have good stable gas pressure, is convenient to control, has good practicability.
For achieving the above object, CNG air entraining substation trailer pipe-line system of the present utility model comprises the trailer being provided with multiple steel cylinder, be respectively arranged with gas inlet/outlet pipe and liquid inlet/outlet pipe in the front end and back end of each steel cylinder, gas inlet/outlet pipe and liquid inlet/outlet pipe are also respectively arranged with gas turnover ball valve and liquid turnover ball valve; Described steel cylinder divides into groups between two, and be divided into even number set, gas inlet/outlet pipe and the liquid inlet/outlet pipe of often organizing steel cylinder are connected in parallel respectively, the gas inlet/outlet pipe after being connected in parallel and liquid inlet/outlet pipe are also respectively arranged with gas inlet and outlet pneumatic ball valve and hydraulic pneumatic ball valve is returned in fluid injection; Described even number set steel cylinder is divided into two-part, is positioned at the liquid inlet/outlet pipe that each group of steel cylinder fluid injection go back to hydraulic pneumatic ball valve front end and is connected in parallel in every part steel cylinder group; The gas inlet/outlet pipe that each group of steel cylinder is positioned at gas inlet and outlet pneumatic ball valve rear end is connected in parallel in gas and converges on pipe.
Adopt above-mentioned technological scheme, steel cylinder is divided into the even number many groups be connected in parallel between two, and be divided into two-part again, thus simplify system pipeline, decrease pipeline attended operation amount, be convenient to the control of system, steel cylinder group in parallel also makes the pipeline latus rectum be suitable for become large, pipeline valid circulation area increases, improve the passing capacity of liquids and gases, and then improve the reactivity of system, shorten the connecting time between each bottle group, and the gas inlet/outlet pipe of each bottle group is also for being connected in parallel, without the handoff procedure of gas between different pipeline, thus the stability of gas pressure can be ensured, be convenient to the stable of fueling process carry out, there is good practicability.
As the restriction to aforesaid way, at least one place, inner side laying respectively at gas turnover ball valve and liquid turnover ball valve in the front end and back end of each steel cylinder is provided with rupture disk.Rupture disk is set and can carries out pressure releasing to it when gas or fluid pressure exceed limit value in steel cylinder, dangerous to prevent steel cylinder from explosion occurring.
Another object of the present utility model there are provided a kind of CNG air entraining substation system, can have good stable gas pressure, is convenient to control, and has good practicability.
CNG air entraining substation system of the present utility model comprises trailer, hydraulic booster prying body, control module and filling machine module, and described trailer has the structure of CNG air entraining substation trailer pipe-line system as the aforementioned; Described hydraulic booster prying body comprises the liquid storage tank storing hydraulic fluid, the hydraulic booster pump that import is connected with liquid storage tank, and hydraulic control valve group is returned in the pressure controlled valve group be serially connected in successively on hydraulic booster pump discharge and fluid injection, the liquid inlet/outlet pipe after described two-part steel cylinder group is connected in parallel is connected in fluid injection via high-voltage quick joint and returns in hydraulic control valve group; Described control module comprises controller PLC, and the pressure transducer being arranged on level detector on liquid storage tank, being connected to hydraulic booster pump discharge be electrically connected with described controller PLC, is arranged at the solenoid valve that the gas surplus monitor in each steel cylinder and the control be arranged on respectively on each pneumatic ball valve drive air-flow break-make; Described filling machine module comprises filling machine, be serially connected with the CNG filter on filling machine suction port and CNG separator successively, the import of described CNG separator is converged to manage via high-voltage quick joint and gas and is connected, between CNG filter and filling machine, be also serially connected with aerating pneumatic ball valve.
As the restriction to aforesaid way, described pressure controlled valve group comprises the one-way valve be connected with hydraulic booster pump discharge, be connected to relief valve and the selector valve of described one-way valve front end, the solenoid electric valve of described selector valve is electrically connected on controller PLC, and the import that hydraulic control valve group is returned in described fluid injection is connected to the rear end of one-way valve.
As the restriction to aforesaid way, described fluid injection is returned hydraulic control valve group and is comprised be connected in parallel two the control valve roads be connected with its import, and be connected to the liquid return pipe of two control valve road ends, described liquid return pipe is provided with time fluid valve be electrically connected on controller PLC; Two described control valve roads are the fluid injection pneumatic ball valve of two serial connections and return hydraulic pneumatic ball valve, and the liquid inlet/outlet pipe after described two-part steel cylinder group is connected in parallel is connected in the fluid injection pneumatic ball valve on two control valve roads respectively via high-voltage quick joint and returns between hydraulic pneumatic ball valve.Article two, control valve road is connected in parallel the switching air feed that can be used between two-part steel cylinder group, fluid injection pneumatic ball valve and return hydraulic pneumatic ball valve and divide and occupy supercharging that both sides can be respectively used to steel cylinder and return liquid process.
As the restriction to aforesaid way, described fluid injection is returned hydraulic control valve group and is comprised three position four-way electromagnetic valve, the Electromagnetic Control end of described three position four-way electromagnetic valve is electrically connected on controller PLC, A, B mouth Bonding pressure control valve group and liquid return pipe respectively of described three position four-way electromagnetic valve, described liquid return pipe is provided be electrically connected on and controller PLC returns fluid valve, P, T mouth of described three-position four-way valve is connected via the liquid inlet/outlet pipe after high-voltage quick joint is connected in parallel with two-part steel cylinder group respectively.
As the restriction to aforesaid way, described hydraulic booster prying body is provided with the combustible gas alarm prober be electrically connected with controller PLC, described CNG separator is connected with safety valve.
As the restriction to aforesaid way, described liquid storage tank is provided with the temperature transducer be electrically connected with controller PLC, described liquid storage tank is also provided with and controls with the heater heated the hydraulic fluid in liquid storage tank or dispel the heat and radiator via controller PLC.Set temperature sensor and heater and radiator can keep in the suitable temperature range of the hydraulic fluid in liquid storage tank automatically, thus ensure effectively carrying out smoothly of steel cylinder blower operations process.
As the restriction to aforesaid way, described liquid storage tank is connected with the circulation filter hydraulic fluid in it being carried out to circulating filtration.The filtration that circulation filter can continue hydraulic fluid is set, thus ensures the pure of hydraulic fluid, avoid polluting CNG.
In sum, adopt the technical solution of the utility model, can switch by the effective of two-part steel cylinder group the continuity ensureing air feed in steel cylinder air feed process, and converge pipe by the gas of larger circulation area together with being connected in parallel, good stable gas pressure can be had, system pipeline structure is simple, is convenient to control, and has good practicability.
Accompanying drawing explanation
Do further to describe in detail to the utility model below in conjunction with the drawings and the specific embodiments:
Fig. 1 is the structural representation of the trailer pipe-line system of the utility model embodiment;
Fig. 2 is the structural representation of CNG air entraining substation system;
Fig. 3 is the pipeline connection diagram that fluid injection returns when hydraulic control valve group is another structure;
In figure: 1, liquid storage tank; 2, hydraulic booster pump; 3, pressure controlled valve group; 4, hydraulic control valve group is returned in fluid injection; 5, fluid valve is returned; 6, safety valve; 7, CNG separator; 8, CNG filter; 9, high-voltage quick joint; 10, high-voltage quick joint; 11, high-voltage quick joint; 12, hydraulic pneumatic ball valve is returned in fluid injection; 13, hydraulic pneumatic ball valve is returned in fluid injection; 14, liquid turnover ball valve; 15, rupture disk; 16, steel cylinder; 17, rupture disk; 18, gas surplus monitor; 19, pressure gauge; 20, gas turnover ball valve; 21, gas inlet and outlet pneumatic ball valve; 22, gas inlet and outlet pneumatic ball valve; 23, hydraulic pneumatic ball valve is returned in fluid injection; 24, hydraulic pneumatic ball valve is returned in fluid injection; 25, gas inlet and outlet pneumatic ball valve; 26, gas inlet and outlet pneumatic ball valve; 27, manually-operated gate; 28, manually-operated gate; 29, tube valve is converged; 30, hydraulic booster prying body; 31, trailer; 32, trailer rear operating storehouse; 33, trailer front portion operation storehouse; 34, filling machine; 35, aerating equipment is treated; 36, aerating pneumatic ball valve; 37, fluid injection pneumatic ball valve; 38, fluid injection pneumatic ball valve; 39, hydraulic pneumatic ball valve is returned; 40, hydraulic pneumatic ball valve is returned; 41, relief valve; 42, selector valve; 43, solenoid electric valve; 44, one-way valve; 45, manually liquid valve is returned; 46, manually liquid valve is returned; 47, bypass valve; 48, pressure transducer; 49, heater; 50, radiator; 51, level detector; 52, circulation filter; 53, gas converges pipe; 54, temperature transducer; 55, three-position four-way valve.
Embodiment
Embodiment one
The present embodiment relates to a kind of CNG air entraining substation trailer pipe-line system, as shown in fig. 1, it comprises trailer 31, trailer 31 is provided with multiple steel cylinder 16, liquid inlet/outlet pipe and gas inlet/outlet pipe is respectively arranged with in the front end and back end (upper and lower end namely shown in figure) of each steel cylinder 16, liquid inlet/outlet pipe and gas inlet/outlet pipe are also respectively arranged with liquid turnover ball valve 14 and gas turnover ball valve 20, in the present embodiment, steel cylinder 16 is provided with 8 altogether, and the convenience for describing, it is called C1 ~ C8, 8 steel cylinders 16 divide into groups between two, be divided into 4 groups, the gas inlet/outlet pipe often organizing steel cylinder 16 is being connected with gas turnover ball valve 20 together with being connected in parallel after liquid turnover ball valve 14 respectively with liquid inlet/outlet pipe, gas inlet/outlet pipe after being connected in parallel and liquid inlet/outlet pipe are also respectively arranged with gas inlet and outlet pneumatic ball valve 21, gas inlet and outlet pneumatic ball valve 22, hydraulic pneumatic ball valve 12 is returned in gas inlet and outlet pneumatic ball valve 25 and gas inlet and outlet pneumatic ball valve 26 and fluid injection, hydraulic pneumatic ball valve 13 is returned in fluid injection, hydraulic pneumatic ball valve 23 is returned in fluid injection and hydraulic pneumatic ball valve 24 is returned in fluid injection, they are corresponding steel cylinder group C1-C2 respectively, C3-C4, C5-C6 and C7-C8.
Steel cylinder 16 is divided equally in order to two parts again on the basis of dividing into groups between two in the present embodiment, and it comprises the C1-C4 being positioned at side, and is positioned at the C5-C8 of opposite side.Be positioned at the liquid inlet/outlet pipe that the fluid injection of each group of steel cylinder 16 goes back to hydraulic pneumatic ball valve front end in every part steel cylinder group to be connected in parallel together, and the gas inlet/outlet pipe being positioned at each group of steel cylinder 16 gas inlet and outlet pneumatic ball valve rear end in two-part steel cylinder group is also connected in parallel in gas and converges on pipe 53.Be positioned at after liquid inlet/outlet pipe that the fluid injection of each group of steel cylinder 16 goes back to hydraulic pneumatic ball valve front end is connected in parallel in two-part steel cylinder group, the pipeline be connected together is respectively arranged with manually-operated gate 27 and manually-operated gate 28, also pressure gauge is connected with, for the hydrodynamic pressure shown in real time in pipeline at manually-operated gate 27 and manually-operated gate 28 place.And be also provided with convergence tube valve 29 at the end of liquid pools pipe 53, in convergence, tube valve 29 place is equally also provided with pressure gauge.
The inner side being positioned at liquid turnover ball valve 14 and gas turnover ball valve 20 in the present embodiment in the front end and back end of each steel cylinder 16 is respectively arranged with rupture disk 15 and rupture disk 17, for when steel cylinder 16 internal pressure exceedes limit value, pressure release is carried out to it, and going out also to be connected with pressure gauge 19 at rupture disk 15, pressure gauge 19 can be used for showing the hydrodynamic pressure in steel cylinder 16 in real time.For ease of describing, in the present embodiment, each pipe fitting part being positioned at each steel cylinder 16 front end is referred to as trailer rear operating storehouse 32, and each pipe fitting part being positioned at each steel cylinder 16 rear end is referred to as operation storehouse 33, trailer front portion, thus be convenient to the identification operation of each pipe fitting on trailer 31, to prevent the generation of misoperation.
Embodiment two
The present embodiment relates to a kind of CNG air entraining substation system, and as shown in Figure 2, it comprises trailer 31, hydraulic booster prying body 30, control module and filling machine module.Trailer 31 has the structure of the CNG air entraining substation trailer pipe-line system as described in embodiment one, hydraulic booster prying body 30 comprises the liquid storage tank 1 storing hydraulic fluid, the hydraulic booster pump 2 that import is connected with liquid storage tank 1, and be serially connected in successively hydraulic booster pump 2 export on pressure controlled valve group 3 and fluid injection return hydraulic control valve group 4.Control module comprises not shown controller PLC, and the pressure transducer 48 being arranged on level detector (LI) 51 on liquid storage tank 1, being connected to hydraulic booster pump discharge be electrically connected with controller PLC, is arranged at the solenoid valve that gas surplus monitor (LC) 18 in each steel cylinder 16 and the control be arranged on respectively on each pneumatic ball valve drive air-flow break-make.Filling machine module then comprises filling machine 34, be serially connected with the CNG filter 8 on filling machine 34 suction port and CNG separator 7 successively, the import of CNG separator 7 is converged pipe 53 via high-voltage quick joint 11 and gas and is connected, between CNG filter 8 and filling machine 34, be also serially connected with aerating pneumatic ball valve 36.
For ease of describing, in two-part steel cylinder group on trailer 31, C1-C4 is called E part, and C5-C8 is called F part, the liquid inlet/outlet pipe after E, F two-part steel cylinder group is connected in parallel is connected in fluid injection via high-voltage quick joint 9 and high-voltage quick joint 10 respectively and returns in hydraulic control valve group 4.In the present embodiment, liquid storage tank 1 can be a square cavity, level detector (LI) 51 is arranged on the side of liquid storage tank 1, the inlet ductwork of hydraulic booster pump 2 is then connected to the opposite side of liquid storage tank 1, the inlet ductwork of hydraulic booster pump 2 is also provided with valve and filter, to ensure the normal use of hydraulic booster pump 2 and subsequent element.Namely temperature transducer 54 is arranged in the inlet ductwork of hydraulic booster pump 2, and on liquid storage tank 1, be also provided with heater 49 and radiator 50, thus can be heated or radiating treatment by the hydraulic fluid in heater 49 and radiator 50 pairs of liquid storage tanks 1 according to the checkout value of temperature transducer 54 under the control of controller PLC.Hydraulic fluid in liquid storage tank 1 is the liquid being difficult to mix with CNG, and as Synthin hydraulic oil, the structure of heater 49 and radiator 50 selects conventional heating and sink.
In the present embodiment, liquid storage tank 1 is also connected with circulation filter 52, carries out circulating filtration for the water conservancy fluid in liquid storage tank 1, thus the pure of hydraulic fluid can be ensured, prevent from causing to block to system element damaging.Circulation filter 52 can be made up of the filter element of recycle pump and serial connection, and it is also for adopting conventional structure.Hydraulic booster pump 2 is arranged on hydraulic booster prying body 30 for flexible connection, and to reduce vibration, the drive motor of hydraulic booster pump 2, for adopting explosion separation motor, to ensure the safety of CNG air entraining substation, reduces hidden danger.
Pressure controlled valve group 3 comprises and exports with hydraulic booster pump 2 one-way valve 44 be connected, in the front end of one-way valve 44, namely one-way valve 44 and hydraulic booster pump 2 export between pipeline on, be connected with pressure transducer 48, pressure transducer 48 is for detecting the hydrodynamic pressure in pipeline after hydraulic booster pump 2, for ease of observing the hydrodynamic pressure in hydraulic booster pump 2 outlet port at the scene, in the present embodiment, be also connected to pressure gauge at pressure transducer 48 place.The outlet of one-way valve 44, also namely the outlet of pressure controlled valve group 3 is then connected to the import that hydraulic control valve group is returned in fluid injection.Pressure controlled valve group 3 also comprises the relief valve 41 being connected to one-way valve 44 front end, and is connected to the selector valve 42 of relief valve 41 rear end, and selector valve 42 is driven by air pressure, and it passes through solenoid electric valve 43 and controls the break-make of gas pressure source by controller PLC thus realize commutation.Can according to the checkout value of pressure transducer 48 under the control of controller PLC by selector valve 42, the flow direction of the hydraulic fluid that adjustment hydraulic booster pump 2 exports, thus realize the normal pressurization of hydraulic fluid.
Fluid injection return hydraulic control valve group 4 comprise be connected with its import be connected in parallel together with two control valve roads, be connected with liquid return pipe at the end on two control valve roads, the end of liquid return pipe is connected in liquid storage tank 1.Liquid return pipe is provided with back fluid valve 5, and returning fluid valve 5 is the electromagnetic valve controlled by controller PLC, and on liquid return pipe, be also provided with a pressure gauge, observes for the hydrodynamic pressure in liquid return pipe.In the present embodiment, two control valve roads are all for being made up of the fluid injection pneumatic ball valve be serially connected and time hydraulic pneumatic ball valve, it is respectively the fluid injection pneumatic ball valve 37 and time hydraulic pneumatic ball valve 39 that are arranged on side, and is arranged on the fluid injection pneumatic ball valve 38 of opposite side and returns hydraulic pneumatic ball valve 40.The solenoid valve of the control source of the gas break-make of each fluid injection pneumatic ball valve and time hydraulic pneumatic ball valve is then electrically connected on controller PLC.And E, F two-part steel cylinder group on trailer 31 be connected in parallel after liquid inlet/outlet pipe be connected in fluid injection pneumatic ball valve 37 via high-voltage quick joint 9 and high-voltage quick joint 10 respectively and return hydraulic pneumatic ball valve 39 and fluid injection pneumatic ball valve 38 and go back to the centre of hydraulic pneumatic ball valve 40.Thus can by controller PLC control different fluid injection pneumatic ball valves and return hydraulic pneumatic ball valve keying realize on trailer 31 E, F part fluid injection or return liquid operate.
Controllability time in the present embodiment for increasing fluid injection and returning liquid operation, the connecting pipeline that high-voltage quick joint 9 and high-voltage quick joint 10 and fluid injection return between hydraulic control valve group 4 is connected with respectively and manually returns liquid valve 45 and manually return liquid valve 46, the rear end manually returning liquid valve 45 and manual time liquid valve 46 is connected in liquid storage tank 1, and valve and pressure gauge also can be provided with on high-voltage quick joint 9 and high-voltage quick joint 10 and fluid injection return between hydraulic control valve group 4 connecting pipeline, when being used in high-voltage quick joint 9 and high-voltage quick joint 10 switching connection thus, shutoff is carried out to connecting pipeline, and also can carry out real-time monitored to the hydrodynamic pressure in connecting pipeline, so that control the keying of manually returning liquid valve 45 and manually returning liquid valve 46.
And fluid injection returns hydraulic control valve group 4 except can adopting the structural type on two the control valve roads be connected in parallel described above in the present embodiment, it also can adopt a three-position four-way valve 55 as shown in Figure 3, now A, B mouth of three-position four-way valve 55 connects outlet and the liquid return pipe of one-way valve 44 respectively, and liquid return pipe is still provided with back fluid valve and pressure gauge.P, T mouth of three-position four-way valve 55 then respectively via high-voltage quick joint 9 to be connected with high-voltage quick joint 10 E, F two-part steel cylinder group on trailer 31 be connected in parallel after liquid inlet/outlet pipe.
Filling machine 34, for being arranged on the side of hydraulic booster prying body 30, is connected to the CNG filter 8 of filling machine 34 inlet, CNG separator 7 and aerating pneumatic ball valve 36 then for being arranged on hydraulic booster prying body 30 in the present embodiment.The pipeline that CNG separator 8 is connected with CNG filter is provided with valve, and place is also provided with safety valve 6 at CNG separator 7, in the present embodiment, safety valve 6 is for being connected on the connecting pipeline between CNG separator 7 and CNG filter 8, and certain safety valve 6 also can be directly to connect and is arranged on CNG separator 7.The liquid-discharging tube of band valve is also provided with, for the hydraulic fluid of discharging separation place in one end of CNG separator 7.And valve and pressure gauge is also provided with on the pipeline between the import and high-voltage quick joint 11 of CNG separator 7, for when high-voltage quick joint 11 switches and connects, the outlet of CNG separator 7 is closed, and real-time monitored is carried out to the gas pressure in pipeline.Pipeline between the import and high-voltage quick joint 11 of CNG separator 7 is connected with valve place and is also provided with a bypass valve 47, the rear end of bypass valve 47 can be connected to other filling machines or CNG temporary reservoir device, to increase the controllability of CNG gas pressure in pipeline according to manometric real-time checkout value.
This CNG air entraining substation system in use, after pipeline connects, running opened by hydraulic booster pump 2, now fluid injection pneumatic ball valve 37, hydraulic pneumatic ball valve 12 is returned in fluid injection all has controller PLC to control as opening state, pressure controlled valve group 3 is also for supplying liquid status, hydraulic fluid enters the C1 on trailer 31 in E part steel cylinder group after pressurizeing via hydraulic booster pump 2, in C2 two steel cylinders 16, work as C1, pressure in C2 steel cylinder group is pressurized to setting value and (is generally 20MPa ~ 22MPa, or set according to related specifications by operator) time, controller PLC controls gas inlet and outlet pneumatic ball valve 21 and aerating pneumatic ball valve 36 is opened, start filling machine 34 air feed, and by aerating operator to treating aerating equipment 35 aerating.In fluid injection fueling process, when pressure transducer 48 detects pipeline fluid pressure higher than setting value, controller PLC makes selector valve 42 commutate by solenoid electric valve 43, and the hydraulic fluid after pressurization is back in liquid storage tank 1, and hydraulic booster pump 2 also enters holding state.
When the CNG that the gas surplus monitor (LC) 18 in C1, C2 steel cylinder group detects in steel cylinder 16 is released 96% by hydraulic fluid, namely the fluid injection operation of this steel cylinder group completes, and under the control of controller PLC, open back liquid operation.When returning liquid, controller PLC control gas inlet and outlet pneumatic ball valve 21, fluid injection pneumatic ball valve 37 are closed and are controlled fluid injection and return hydraulic pneumatic ball valve 12, return hydraulic pneumatic ball valve 39 and return fluid valve 5 for opening state, and the hydraulic fluid in C1, C2 steel cylinder group is just pushed back in liquid storage tank 1 under the pressure of steel cylinder residual gas.
At C1, C2 steel cylinder group is returned in the process of liquid operation, when the hydraulic fluid liquid level in liquid storage tank 1 reaches on low limit value, hydraulic booster pump 2 is opened, controller PLC controls fluid injection pneumatic ball valve 38, fluid injection is returned hydraulic pneumatic ball valve 23 and is opened, start C5, C6 steel cylinder group carries out fluid injection, treat C5, after C6 steel cylinder group internal pressure reaches setting value, controller PLC just controls gas inlet and outlet pneumatic ball valve 25 and opens, start thus by C5, C6 steel cylinder group carries out air feed to filling machine 34, treat C5, in C6 steel cylinder group, liquid operation is just opened back in fluid injection after having operated, meanwhile, controller PLC starts C3 again, the fluid injection of C4 steel cylinder group and time liquid operation, circulation like this, until C7, the fluid injection of C8 steel cylinder group, return till liquid operated.
In the present embodiment in the process of C1, C2 steel cylinder group fluid injection aerating operation, controller PLC can according to the CNG surplus state in C1, C2 steel cylinder group in E part, C5, C6 steel cylinder group in F part is carried out to the step of falling blower operations of discontinuity, also namely by controller PLC by gas pressure in the pressure sensor monitoring steel cylinder that is arranged at pipeline, when pressure is in setting value and stablizes, controller PLC controls next group air valve and opens, so repeat, until gas pressure is also in setting value in lower group of steel cylinder.When not affecting normal aerating operation, the pressure in C5, C6 steel cylinder group can be increased to setting value thus, follow-up steel cylinder group can be made when steel cylinder group switches thus to enter as early as possible normal for gaseity, to ensure the continuity of aerating.And in the present embodiment when leading portion steel cylinder group returns liquid operation, the follow-up gas inlet and outlet pneumatic ball valve storing the steel cylinder group of CNG can be made all to be in opening state, thus the continuity of fueling process can be ensured further.
Claims (9)
1. a CNG air entraining substation trailer pipe-line system, comprise the trailer being provided with multiple steel cylinder, it is characterized in that: be respectively arranged with gas inlet/outlet pipe and liquid inlet/outlet pipe in the front end and back end of each steel cylinder, gas inlet/outlet pipe and liquid inlet/outlet pipe are also respectively arranged with gas turnover ball valve and liquid turnover ball valve; Described steel cylinder divides into groups between two, and be divided into even number set, gas inlet/outlet pipe and the liquid inlet/outlet pipe of often organizing steel cylinder are connected in parallel respectively, the gas inlet/outlet pipe after being connected in parallel and liquid inlet/outlet pipe are also respectively arranged with gas inlet and outlet pneumatic ball valve and hydraulic pneumatic ball valve is returned in fluid injection; Described even number set steel cylinder is divided into two-part, is positioned at the liquid inlet/outlet pipe that each group of steel cylinder fluid injection go back to hydraulic pneumatic ball valve front end and is connected in parallel in every part steel cylinder group; The gas inlet/outlet pipe that each group of steel cylinder is positioned at gas inlet and outlet pneumatic ball valve rear end is connected in parallel in gas and converges on pipe.
2. CNG air entraining substation trailer pipe-line system according to claim 1, is characterized in that: at least one place, inner side laying respectively at gas turnover ball valve and liquid turnover ball valve in the front end and back end of each steel cylinder is provided with rupture disk.
3. a CNG air entraining substation system, comprises trailer, hydraulic booster prying body, control module and filling machine module, it is characterized in that: described trailer has the structure of the CNG air entraining substation trailer pipe-line system as described in claim 1 or 2; Described hydraulic booster prying body comprises the liquid storage tank storing hydraulic fluid, the hydraulic booster pump that import is connected with liquid storage tank, and hydraulic control valve group is returned in the pressure controlled valve group be serially connected in successively on hydraulic booster pump discharge and fluid injection, the liquid inlet/outlet pipe after described two-part steel cylinder group is connected in parallel is connected in fluid injection via high-voltage quick joint and returns in hydraulic control valve group; Described control module comprises controller PLC, and the pressure transducer being arranged on level detector on liquid storage tank, being connected to hydraulic booster pump discharge be electrically connected with described controller PLC, is arranged at the solenoid valve that the gas surplus monitor in each steel cylinder and the control be arranged on respectively on each pneumatic ball valve drive air-flow break-make; Described filling machine module comprises filling machine, be serially connected with the CNG filter on filling machine suction port and CNG separator successively, the import of described CNG separator is converged to manage via high-voltage quick joint and gas and is connected, between CNG filter and filling machine, be also serially connected with aerating pneumatic ball valve.
4. CNG air entraining substation system according to claim 3, it is characterized in that: described pressure controlled valve group comprises the one-way valve be connected with hydraulic booster pump discharge, be connected to relief valve and the selector valve of described one-way valve front end, the solenoid electric valve of described selector valve is electrically connected on controller PLC, and the import that hydraulic control valve group is returned in described fluid injection is connected to the rear end of one-way valve.
5. CNG air entraining substation system according to claim 3, it is characterized in that: described fluid injection is returned hydraulic control valve group and comprised be connected in parallel two the control valve roads be connected with its import, and be connected to the liquid return pipe of two control valve road ends, described liquid return pipe is provided with time fluid valve be electrically connected on controller PLC; Two described control valve roads are the fluid injection pneumatic ball valve of two serial connections and return hydraulic pneumatic ball valve, and the liquid inlet/outlet pipe after described two-part steel cylinder group is connected in parallel is connected in the fluid injection pneumatic ball valve on two control valve roads respectively via high-voltage quick joint and returns between hydraulic pneumatic ball valve.
6. CNG air entraining substation system according to claim 3, it is characterized in that: described fluid injection is returned hydraulic control valve group and comprised three position four-way electromagnetic valve, the Electromagnetic Control end of described three position four-way electromagnetic valve is electrically connected on controller PLC, A, B mouth Bonding pressure control valve group and liquid return pipe respectively of described three position four-way electromagnetic valve, described liquid return pipe is provided be electrically connected on and controller PLC returns fluid valve, P, T mouth of described three-position four-way valve is connected via the liquid inlet/outlet pipe after high-voltage quick joint is connected in parallel with two-part steel cylinder group respectively.
7. CNG air entraining substation system according to claim 3, is characterized in that: on described hydraulic booster prying body, be provided with the combustible gas alarm prober be electrically connected with controller PLC, and described CNG separator is connected with safety valve.
8. CNG air entraining substation system according to claim 3, it is characterized in that: on described liquid storage tank, be provided with the temperature transducer be electrically connected with controller PLC, described liquid storage tank is also provided with and controls with the heater heated the hydraulic fluid in liquid storage tank or dispel the heat and radiator via controller PLC.
9. CNG air entraining substation system according to claim 3, is characterized in that: on described liquid storage tank, be connected with the circulation filter hydraulic fluid in it being carried out to circulating filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090600A (en) * | 2016-06-03 | 2016-11-09 | 鲁西新能源装备集团有限公司 | A kind of CNG integral type moves air supply system |
| CN107327696A (en) * | 2017-08-10 | 2017-11-07 | 丹阳市方蓝气体设备有限公司 | Platform-type green charging system |
| CN108105587A (en) * | 2017-12-28 | 2018-06-01 | 天津良华新能源科技有限公司 | A kind of hydraulic type CNG air entraining substation control system and control method |
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2015
- 2015-03-26 CN CN201520172624.1U patent/CN204629077U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090600A (en) * | 2016-06-03 | 2016-11-09 | 鲁西新能源装备集团有限公司 | A kind of CNG integral type moves air supply system |
| CN107327696A (en) * | 2017-08-10 | 2017-11-07 | 丹阳市方蓝气体设备有限公司 | Platform-type green charging system |
| CN108105587A (en) * | 2017-12-28 | 2018-06-01 | 天津良华新能源科技有限公司 | A kind of hydraulic type CNG air entraining substation control system and control method |
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