CN208011303U - A kind of hydraulic type CNG air entraining substation control system - Google Patents
A kind of hydraulic type CNG air entraining substation control system Download PDFInfo
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- CN208011303U CN208011303U CN201721882725.3U CN201721882725U CN208011303U CN 208011303 U CN208011303 U CN 208011303U CN 201721882725 U CN201721882725 U CN 201721882725U CN 208011303 U CN208011303 U CN 208011303U
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Abstract
The utility model provides a kind of hydraulic type CNG air entraining substation control system, 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 front, CNG quick couplings are connected to, the gas piping that sledge is pressurized with hydraulic substation is connected；The utility model can realize automatically controlling for hydraulic substation operation overall process by the pipe-line system of air entraining substation and CNG semitrailers, be not necessarily to manual intervention；CNG surpluses and pressure in steel cylinder can be monitored in real time, on the basis of ensureing air entraining substation system normal operation, can ftercompction operation be executed 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, avoids the frequent starting of motor that operation energy consumption is made to reduce due to automatically continuously running.
Description
Technical field
The utility model belongs to fluid pressure type CNG (Compressed Natural Gas) air entraining substation system technical field,
It is related to fluid pressure type air entraining substation control system.
Background technology
Natural gas is worldwide used widely as a kind of clear energy sources.It is wherein combustion with natural gas
The equipment such as material driving automobile, then become 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 far 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, and the mother station of steel cylinder a long way off fills CNG, then transports air entraining substation system, is adding
Gas substation system makes hydraulic fluid by the fluidic interface of steel cylinder upper end from being pumped into liquid storage tank in each steel cylinder
CNG is forced through another gas interface discharge of steel cylinder upper end, and CNG flows through hose and entered in fuel vehicle to be added by filling machine；
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 utility model, and liquid only is set in steel cylinder upper end
Body and gas interface, lead to that pipe-line system is very complicated, amount of parts is numerous, cannot achieve automatically controlling for real meaning,
Lead to substation aerating poor continuity；Since the liquids and gases interface latus rectum in gas cylinder is smaller, the aerating speed of system is limited
And gas supply capacity；
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, CNG conveying semi-trailers in the utility model
With 8 steel cylinders instead of numerous small steel cylinders in former technology, valves and fittings quantity significantly reduces, and pipe-line system is simplified, and is added
Gas process, which largely realizes, to be automatically controlled, but the control method still has the larger problem of aerating pressure oscillation, in order to steady
Determining supply gas pressure needs to be manually operated, and aerating speed and gas supply capacity without be improved significantly, the control method is due to adding
Hydraulic pump frequent starting during pressure 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 disadvantages for the prior art：
1, former air entraining substation system CNG semitrailers disclosed in Chinese patent literature CN1486409A use multigroup vertical small steel
Bottle, leads to that pipe-line system is very complicated, amount of parts is numerous, and substation system cannot achieve automatically controlling for real meaning；In
Though the prior art has improvement disclosed in state patent document CN2905752Y, this could not be solved the problems, such as at all；
2, former air entraining substation system is really automatically controlled due to can not achieve, aerating poor continuity and aerating pressure oscillation
Greatly, it cannot be satisfied continuous aerating for a long time；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, the pressure for being difficult to overcome still occurs in fueling process
Fluctuation and aerating are interrupted phenomenon；
3, the vertical small steel cylinder of former air entraining substation system CNG semitrailers disclosed in Chinese patent literature CN1486409A, only exists
Fluidic interface and gas interface, the circulation area very little of interface, which is arranged, in steel cylinder upper end makes the gas supply capacity of substation that 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；
4, the prior art disclosed in Chinese patent literature CN2905752Y, exist needs to be manually operated to stablize supply gas pressure
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.
Utility model content
In view of this, the utility model is directed to a kind of hydraulic type CNG air entraining substation system, hydraulic pressure air entraining substation is solved
The technical problem of system aerating poor continuity and gas supply capacity deficiency；Fueling process neutralization is solved to switch in bottle group operating process
Pressure oscillation problem.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of hydraulic type CNG air entraining substation control system, including fluid pressure type long tube semitrailer and hydraulic substation are pressurized sledge, partly
Gas convergence manifold on trailer leads to semitrailer rear portion from semitrailer front, is connected to CNG quick couplings, increases with hydraulic substation
The gas piping of sledge is pressed to be connected；
Wherein, include liquid storage tank, high-pressure pump, fluid injection return hydraulic control valve group, natural gas inside hydraulic substation supercharging sledge
Surge flask；The liquid ready-packaged joint of the rear operating 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；Hydraulic substation is pressurized the gas piping unicom of sledge on natural gas buffering gas cylinder,
Aerating control valve is arranged in the output end that gas cylinder is buffered in natural gas, and aerating control valve is connect with external filling machine.
Preferably, upper on semitrailer to be horizontally arranged 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 through C3 liquid ball valve, C4 liquid ball valve, liquid line respectively, then passes through
Third is grouped liquid pneumatic ball valve and forms the grouping of third 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 third 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, the liquid line that sledge is pressurized with hydraulic substation are connected；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, the liquid line that sledge is pressurized with hydraulic substation is connected；In semitrailer front, steel cylinder
C1 and steel cylinder C2 connect together through C1 gas ball valves and C2 gas ball valves, gas piping respectively, 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 type, 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, it is equipped with pressure sensor 3 in taking over for liquid ready-packaged joint, pressure sensor 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 executing 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, the fueling process for treating aerating equipment is executed；
(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), select other bottles of groups for 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 set to reach setting value；When running bottle group CNG surpluses less than setting value, hydraulic substation is pressurized sledge selection
Subsequent bottle group executes aerating operation as new operation bottle group；And (S002) step is executed, close the gas of current operation bottle group
Body valve makes currently to run the disengaging aerating operation of bottle group, further executes 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, hydraulic substation is pressurized the gas that ftercompction bottle group is opened in the control of sledge control system
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 executed 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, it after ftercompction bottle group gas valve is opened completely, executes (S102) step and selects other at least one set of bottles
It is new ftercompction bottle group to organize, and return to step (S100)；So cycle makes institute until all follow-up bottle group whole ftercompctions finish
There is bottle group to be all added in aerating operational process.
Compared with the existing technology, hydraulic pressure CNG air entraining substation systems described in the utility model and control method have following
Advantage：
The hydraulic pressure air entraining substation system and control method of the utility model pass through air entraining substation system and CNG semitrailers
Pipe-line system can realize automatically controlling for hydraulic substation operation overall process, be not necessarily to manual intervention；It can monitor in steel cylinder in real time
CNG surpluses and pressure can automatically hold the CNG in non-fluid injection steel cylinder on the basis of ensureing air entraining substation system normal operation
Row ftercompction operates, and solves the problems, such as the pressure oscillation in fueling process, and the aerating especially switched in bottle group operating process is interrupted now
As being addressed, avoiding needs that the problem of balancing pressure is manually operated in the prior art, due to automatically continuously avoiding pump motor
Frequent starting makes operation energy consumption reduce；The autocontrol method of the utility model by the pipe-line system of substation and CNG semitrailers,
It realizes and fluid injection supercharging, synchronous aerating and synchronous time liquid operating procedure is synchronized to every two steel cylinders in CNG semi-mounted frames, solve liquid
Press the technical problem of air entraining substation system aerating poor continuity and gas supply capacity deficiency.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is the hydraulic pressure air entraining substation control system figure described in the utility model embodiment；
Fig. 2 is automatic control flow chart figure described in the utility model；
Fig. 3 is storekeeper figure after operation after CNG semitrailers described in the utility model；
Fig. 4 is the preceding storekeeper figure of operation after CNG semitrailers described in the utility model；
Fig. 5 is that substation trailer described in the utility model connect example with filling machine；
Fig. 6 is that substation trailer described in the utility model connect second of example with filling machine；
Reference sign：
C1-C8 steel cylinders, 1- hydraulic substations are pressurized sledge, 2- fluid injection return hydraulic control valve groups, 3- pressure sensors, 4- aeratings control
Valve, 5- filling machines, 6- wait for 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, 15- third bottle group liquid pneumatic ball valves, 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-, 23- third bottle group gas pneumatic ball valves, the 4th bottle of group gases of 24-
Pneumatic ball valve, 25-CNG headroom sensors, 26- semitrailers.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more this feature.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
In conjunction with 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 on trailer 26 to be horizontally arranged 8 steel cylinder C1-C8, 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 third
It is grouped liquid pneumatic ball valve 10 and forms the grouping of third gas cylinder；According to same connection type, 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；
In conjunction with shown in Fig. 1 and Fig. 3, the first grouping liquid pneumatic ball valve 9 and third 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 sledge 1 is pressed to be 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 front of semitrailer, steel cylinder C1 and steel cylinder C2 are respectively through C1 gas ball valves 17 and C2 gas ball valves
18, 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 type, 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；
Further include hydraulic substation supercharging sledge 1 in conjunction with shown in Fig. 1, gas convergence manifold leads to semi-mounted from 26 front of semitrailer
Vehicle rear portion is connected to CNG quick couplings 8, and the gas piping that sledge 1 is pressurized with hydraulic substation is connected；
Wherein, hydraulic substation supercharging sledge 1 inside include liquid storage tank, it is 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 on natural gas buffering gas cylinder, aerating control valve is arranged in the output end that gas cylinder is buffered in natural gas
4, aerating control valve 4 is connect with external filling machine 5；Aerating control valve 4 is used for for executing aerating operation, filling machine 5 to be added
6 aerating of gas equipment；
Wherein, it is equipped with pressure sensor 3 in taking over for liquid ready-packaged joint 7, pressure sensor 3 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 executing bottle group and is realized fluid injection
It is operated with liquid is returned；
In conjunction with 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, executes 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 opens ftercompction bottle group gas valve completely when ftercompction bottle group is with operation bottle group pressure balance；
S102 selects other bottles of groups for 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, and operation bottle group CNG pressure is made to reach
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 executed；And S002 steps are executed, the gas valve of current operation bottle group is closed, is made current
It runs bottle group and is detached from aerating operation, further execute 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, hydraulic substation is pressurized the gas valve that ftercompction bottle group is opened in the 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 executed repeatedly, and S101 steps are executed when until ftercompction bottle group pressure is with operation bottle group pressure balance
Suddenly, the gas valve of ftercompction bottle group is opened completely；
Wherein, after ftercompction bottle group gas valve is opened completely, execute S102 steps select other at least one set of bottle groups for
New ftercompction bottle group, and return to step S100；So cycle makes all bottles of groups until all follow-up bottle group whole ftercompctions finish
It is all added in aerating operational process.
The utility model is in addition to 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 that processing unit, data information collector unit and execution unit form；The processing unit
Including the PLC and its expansion module composition in switch board；The data and information collection unit by switch board man-machine interface,
Substation is pressurized in sledge and the temperature sensor on semitrailer, pressure sensor, level detector, gas-liquid survey meter, gas surplus
Detector forms；The execution unit is pressurized in sledge by intermediate relay, solenoid valve and the substation in switch board and CNG semi-mounteds
Pneumatic actuator forms on vehicle；
Referring to Fig.1-6, the concrete operations sequence of the utility model, when hydraulic substation is pressurized the execution fluid injection operation of sledge 1, control
System controls 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 controls steel cylinder C1 synchronous with C2 execution time
Liquid operates.Meanwhile synchronous second packet steel cylinder C3 and the C4 fluid injection for right side region of hydraulic booster pump, wait for 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, it is third in the area of left side that hydraulic booster pump is synchronous
It is grouped steel cylinder C5 and C6 fluid injection, is so recycled, 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, front 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, in the premise for ensureing 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, are fallen to steel cylinder C3 and C4
Blower operations step, when CNG pressure reaches setting value in second packet steel cylinder C3 and C4, second packet steel cylinder C3 and C4 enter just
Chang Jiaqi modes of operation；Further, substation system carries out the step of falling blower operations to third grouping steel cylinder C5 and C6, executes such as
This step makes 8 steel cylinders of four groupings all enter aerating and grasps until completing the blower operations of falling of the 4th grouping steel cylinder C7 and C8
Make state.
The technical issues of the utility model can solve is as follows：
The utility model solve first technical problem be, the control mode of the utility model, in the gas cylinder of operation
Group executes in aerating operating process, the gas cylinders group for needing ftercompction can be taken into account, when the gas cylinders group CNG pressure of operation reaches setting value
Afterwards, automatic to need the gas cylinders group of ftercompction to carry out ftercompction operation, the case where avoiding needing manually to intervene in the prior art, reduce
Pressure oscillation in fueling process makes aerating pressure all-the-time stable in setting range, improves the satisfaction of client；
Second technical problem that the utility model solves is that the control mode of the utility model can be in operation
Gas cylinders group executes in aerating operating process, the gas cylinders group for needing ftercompction is taken into account, when the gas cylinders group CNG pressure of operation reaches setting value
Afterwards, automatic 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；
Execute back liquid operation in the gas cylinders group of 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 when converting steel cylinder in the prior art；
The third technical problem that the utility model solves is, provides a kind of semitrailer steel cylinder grouping connection scheme, makes
The circulation area of semitrailer rear operating storehouse liquid line and the circulation area of front operation storehouse gas piping increase, to improve liquid
Press the speed of CNG substation fluid injection and aerating；
The 4th technical problem that the utility model 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, the gas supply capacity of air entraining substation system is improved；
The 5th technical problem that the utility model solves is that the control mode of the utility model can monitor fortune automatically
The pressure of CNG in capable gas cylinders group and the gas cylinders group for needing ftercompction, and supercharging and ftercompction are carried out according to setting operating pressure value automatically
Operation, avoids booster motor frequent starting and the stopping in pressurization in the prior art, 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 operation gas cylinders group and need ftercompction gas cylinders group conversion, be not necessarily to manual intervention, reduce operating cost；
Matched trailer has the characteristics that pipe-line system is simple, manufacturing cost is low, failure rate is low and reliability is high, can realize liquid
The continuity for pressing air entraining substation system aerating, improves the gas supply capacity of substation system；Fluid pressure type CNG aerating of the utility model
It stands system control method, it is scientific and reasonable to have the characteristics that high degree of automation and operation operating procedure are arranged, can realize hydraulic pressure
The continuity of air entraining substation system aerating, aerating pressure stability improve the gas supply capacity of substation system.
The utility model has universal applicability, and to following trailer steel cylinder quantity (from 2 to 12), grouping scheme is not
Same pipe-line system and substation system is equally applicable.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (4)
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
It is pressurized sledge, the gas convergence manifold on semitrailer leads to semitrailer rear portion from semitrailer front, is connected to CNG quick couplings, with
The gas piping that hydraulic substation is pressurized sledge is connected；
Wherein, inside hydraulic substation supercharging sledge include liquid storage tank, high-pressure pump, fluid injection return hydraulic control valve group, natural gas buffering
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；Hydraulic substation is pressurized the gas piping unicom of sledge on natural gas buffering gas cylinder, in day
Aerating control valve is arranged in the output end of right gas buffering gas cylinder, and aerating control valve is connect 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
Eight steel cylinders are horizontally arranged, 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 third 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 third 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, the liquid line that sledge is pressurized with hydraulic substation are connected；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, the liquid line that sledge is pressurized with hydraulic substation are connected；In semitrailer front, steel cylinder C1 and
Steel cylinder C2 connects together through C1 gas ball valves and C2 gas ball valves, gas piping respectively, is then connected through gas pneumatic ball valve
It converges and manages to gas；Steel cylinder C3 and steel cylinder C4 connect together through C3 gas ball valves and C4 gas ball valves, gas piping respectively, so
It is connected to gas convergence pipe by gas pneumatic ball valve；According to same connection type, 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
Taking over for head is equipped with pressure sensor.
4. a kind of 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, and fluid injection and time liquid operation are switched and realize for executing bottle group.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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