CN107620859A - Unpowered natural gas trailer assembly and control method with cycle alternation control system - Google Patents
Unpowered natural gas trailer assembly and control method with cycle alternation control system Download PDFInfo
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- CN107620859A CN107620859A CN201610551088.5A CN201610551088A CN107620859A CN 107620859 A CN107620859 A CN 107620859A CN 201610551088 A CN201610551088 A CN 201610551088A CN 107620859 A CN107620859 A CN 107620859A
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Abstract
Unpowered natural gas trailer assembly and control method with cycle alternation control system, solve current unpowered gas station is due to filling the low and slow-footed technical problem of efficiency, the technical scheme of use：Based on the high-pressure gas cylinder container with intercommunication controllable valve pipe-line system, detected by the pressure state on each remittance tracheae, the valve opening and closing regulation and control and independent gas cylinder for realizing the independent gas cylinder connected on each remittance tracheae are connected with the switching of each remittance tracheae, and the private memory for being provided with independent gas cylinder cycle alternation transfer sequence table and pressure switching threshold is also included in methods described.By carrying out opening and closing regulation and control and regulation and control to pipe valve to the valve of single independent gas cylinder, the combination number of gas cylinder is added, gas cylinder utilization rate improves, improves and fill speed, and reduces bicycle and fill the time, goes mother station inflation to strive for more times for bicycle.
Description
Technical field
The present invention relates to a kind of Natural Gas Refueling System and control method, belongs to natural gas application technology field, particularly
A kind of unpowered compressed natural gas trailer assembly and control method with gas cylinder cycle alternation control system.
Background technology
It is air conservation with the improvement of Environmental, improvement fuel-engined vehicle tail gas is extremely urgent, electronic vapour
Car and gas combustion automobile will gradually substitute fuel-engined vehicle.Current major main cities public transit system, has gradually adopted natural gas to substitute
Main power source of the fuel oil as automobile, and the natural gas filling station construction of various regions will flourish.
Two classes are divided at domestic and international commonly used natural gas vehicle refueling station at present：1）By pipe-line transportation system（Pipe network）Take
Natural gas, the gas station of market goods locally after compression are referred to as standard station；2）Natural gas is taken by pipeline, with more large scale equipment collection
Middle compression, the gas station group transported with high-pressure bottle to strange land scattered distribution are referred to as female substation system.
Existing common substation technique, equipment and principle：1）Transport the container of compressed natural gas：Generally use both at home and abroad at present
Meet the transport vehicle of DOT.8 Φ 559 × 10,975 40 feet of steel cylinder and pipeline valve composition（Equivalent 12.192m）Mark
Quasi- container, 8 × 2.25=18m3 of volume, maximum working pressure 20Mpa, it is loaded into standard semitrailer（Chassis）On.Transport vehicle stops
It is against substation and source of the gas is provided.It is one group that the container steel cylinder of transport vehicle is all in parallel, shares an inlet and outlet, is externally supplied in transport vehicle
The air pressure of every steel cylinder synchronously declines during gas.2）Because the volume of steel vessel is immutable, transport vehicle supplies to vehicle of being bullied
Air pressure declines in steel cylinder afterwards.In order to ensure to be bullied while transport vehicle air pressure constantly declines, vehicle storage pressure reaches 20Mpa.
The station gas cylinder group of substation is by maximum working pressure 25Mpa high-pressure gas cylinder and the middle pressure gas cylinder group of identical stress levels
Into high pressure is referred to as three line order aerating modes to middle pressure to the method for vehicle supply of being bullied in three times again after this first low pressure, can carry
High gas cylinder gas taking rate and compressor operating efficiency.
3）Gas is taken by transport vehicle, refilling station is sub-station compressor with the equipment of gas cylinder group air pressure.Sub-station compressor is special
, can automatic sequence supplement bottle group pressure with equipment.Its equipment is complicated, involves great expense.Due to the compressibility and the heat of compression of gas,
Mechanical energy is converted to that the inefficient of compression energy, power consumption are larger, and this is substation operating cost highest part.
4）Discharge column, gas selling machine：Discharge column is the transport vehicle of connection transportation compressed natural gas and the special equipment of compressor,
It is made up of joint, flexible pipe, valve.All discharge columns all only have a pipeline, the unique interface of respective transfer car remittance gas row；Sell
Mechanism of qi is that computer automatically controls the equipment for carrying out metering and three line automatic selling gas, has three pipelines to connect high, medium and low voltage storage respectively
Gas cylinder.
The hydraulic substation patented technology that domestic enterprise is introduced by the U.S. is summarized（Application number：020803740.5）
1）The core of the technology is the Incoercibility using hydraulic pressure, and less plunger type oil is consumed with mechanical efficiency high power
Pump, by the liquid injection vehicle carried container of patented technology, avoid container pressure during output gas from declining, realize no station gas bomb
Group compressor-free sells gas process.
2）To ensure to be bullied, vehicle storage pressure reaches 20Mpa, and vehicle carried container uses the long tubular container of higher pressure instead：Meet
15 Φ 406 × 10975 of DOT steel cylinder forms 40 feet（Equivalent 12.192m）Container, its operating pressure 25Mpa,
Cost is higher than 20Mpa container.The vehicle carried container of the technology shares an import inflation, all steel cylinder uniform compressions.In order to save
The liquid of patented technology is saved, every steel cylinder is provided with a gas vent operated pneumatic valve, and two liquid disengaging operated pneumatic valves can be in turn
The natural gas of a steel cylinder is discharged, the adapter of container group and the investment of operated pneumatic valve system complex are larger, this container group assembling
Special transport vehicle price is higher than common transport vehicle more than 50%.Simultaneously special inlet and outlet plunger oil pump and control oil pump, container
The switch board price of group operated pneumatic valve exceedes sub-station compressor.
3）The technology slightly reduces substation device gross investment and occupation of land compared with existing common substation technology；Oil pump compared with
Compressor is simple, maintaining is relatively easy；Operating cost substantially reduces；Relatively existing common substation technology has a clear superiority.
, it is high, live all to there is Installed capital cost in the hydraulic substation in the U.S. that either existing common substation is still introduced
Installation and debugging, engineering is complicated, work on the spot amount is big, the construction period is long, floor space is big, reliability and automaticity are low, makes an uproar
The big technical problem of sound, the requirement of building a station under existing situation is not met.The power consumption of especially common substation is high, it is numerous to safeguard
It is trivial and difficult, maintenance cost is high, although hydraulic substation operating cost is relatively low, still need annual hundreds thousand of or even million.It is high
High cost makes compressed natural gas price remain high for a long time, constrains the popularization and application of this clean energy resource.
In recent years, to reduce cost of investment of building a station, domestic CNG air entraining substations are to utilize 20MPa or 25MPa compressed natural gas
The natural pressure difference of car and car of being bullied is car aerating of being bullied.The structure of this refueling system is：Multiple independences are set on transport vehicle
The container group of supply, every group of container connect into one outlet each via pipeline and valve.It is bullied car inflation mode have
Two kinds：Mode one, discharge column is furnished with unloads gas interface with container group number identical, first by the outlet of each group container and discharge column
Unload the connection of gas interface, the gas pressure size that gas selling machine provides according to each group container, the suitable of high pressure again is pressed with middle after first low pressure
Sequence takes gas from each container group automatically, and to be bullied, car is inflated, until the air pressure of high-pressure bottle group and car air pressure of being bullied are tied close to balance
This bicycle of beam supplies and connects lower bicycle.Although this aerating mode reduces floor space, reduce equipment investment cost
With later maintenance expense, but its to fill efficiency too low, gas taking rate is only capable of reaching 60% or so, and container group completes residue gas during refitting
Body ratio is too high, and caused business efficiency is unsatisfactory.
Mode two, on the basis of mode one by the way of double cars are used in conjunction, its first stage supply operating type and side
Formula one is identical, and second stage supply operation is the air pressure and the close balance of car air pressure of being bullied in the high-pressure bottle group of first bicycle
After start, abandon the low pressure vessel group of first bicycle, discharge column unloaded into gas joint according to connecing the second car respectively from high to low
Low pressure vessel group, the medium pressure vessel group of the high-pressure bottle group of first car and first car, until the low pressure vessel of the second car
Group air pressure and the close balance of car of being bullied.By that analogy, until the high-pressure bottle group air pressure of first bicycle is down to 5MPa, first
Car returns to mother station inflation, and the second car returns to first stage supply operation as bicycle.This aerating mode shortens first list
Car returns to the time of mother station inflation, it is therefore desirable to which the task that fills that can complete original two bicycles expands to three cars, increase
The cost of investment of bicycle.Although mode two improves compared with first way fills efficiency, its cost of investment is also relatively
Height, and pipeline joint is frequently changed when filling, operation is too cumbersome, potential safety hazard be present, is unfavorable for natural gas filling station
Popularization.
In summary, although having obtained the accreditation of certain customers in this unpowered gas station pattern, reduce equipment and
Maintenance cost, but still in the presence of some can not overcome the defects of cause the Market reaction effect of this gas station undesirable.Therefore,
How by filling the raising of efficiency and speed to unpowered gas station, so that unpowered gas station be promoted from the principle sexual stage
It is current unpowered gas station technical problem urgently to be resolved hurrily to the market-oriented stage that can produce bigger economic benefit.
The content of the invention
The present invention is the current unpowered gas station of solution due to filling the low and slow-footed technical problem of efficiency, there is provided one
Unpowered natural gas trailer assembly and control method of the kind with cycle alternation control system, pass through the valve to single independent gas cylinder
Carry out opening and closing regulation and control and the regulation and control to pipe valve, add the combination number of gas cylinder, gas cylinder utilization rate improves, improves and fill
Speed is filled, and reduces bicycle and fills the time, goes mother station inflation to strive for more times for bicycle.
The technical scheme that uses for achieving the above object of the present invention is：
A kind of control method of unpowered compressed natural gas trailer assembly, based on the height with intercommunication controllable valve pipe-line system
Air bottle container, detected by the pressure state on each remittance tracheae, realize the independent gas cylinder connected on each remittance tracheae
Valve opening and closing regulates and controls and independent gas cylinder is connected with the switching of each remittance tracheae, also includes being provided with independent gas cylinder in methods described
The private memory of cycle alternation transfer sequence table and pressure switching threshold, the specific steps of the control method include：
A. pipeline connects：By each remittance tracheae, the tracheae pipe that unloads corresponding with filling machine connects respectively；
B. supply：Filling machine opens an independent gas cylinder according to the order from low pressure to high pressure to car supply of being bullied every time, until
Low pressure or high pressure unload air pressure in tracheae and are less than pressure switching threshold；
C. valve opening and closing regulation and control, gas cylinder and pipeline restructuring：The low pressure for abandoning filling machine unloads the coconnected low pressure gas cylinder of tracheae, enables
One untapped new gas cylinder, and tracheae is unloaded with low pressure and connects in original that pressure unloads the middle air bottle connected on tracheae, middle pressure is unloaded tracheae and connect
Former high pressure unloads the gas cylinder connected on tracheae, high pressure unloads tracheae and connects new gas cylinder as principle keying respective valves, realizes weight
The switching connection for unloading tracheae corresponding with filling machine of the independent gas cylinder of group；
D. continue to supply：Filling machine supplies to car of being bullied successively according to the order from low pressure to high pressure, until low pressure or high pressure are unloaded
Air pressure is less than pressure switching threshold in tracheae；
E. repeat step c ~ d, until new gas cylinder all participates in supply.
Trailer assembly to be bullied car supply principle be：Converge tracheae quantity and gas cylinder number of packet and it is used plus
The gas-adding pipe way amount of mechanism of qi is identical, and so that gas cylinder is divided into four groups as an example, the gas-adding pipe way amount of remittance tracheae and filling machine is respectively
Four tunnels, the aerating pipeline of filling machine is respectively low pressure, secondary middle pressure, middle pressure, high-voltage tube, and connects corresponding remittance tracheae, for example, low
Pressure remittance tracheae connects the low-voltage tube of filling machine, and high pressure remittance tracheae connects the high-voltage tube of filling machine.When being supplied for car of being bullied, aerating
Machine opens air filling gun according to the order by low pressure to high pressure of definition, corresponding to open the remittance coconnected independent gas cylinder of air pipe.
Key problem in technology point includes three parts in the present invention：
Part I：Intercommunication controllable valve ductwork design.Root of gas cylinder installation pneumatic operated valve in the present invention, while in phase
The bypass pipe of by-passing valve is provided between neighbour's remittance tracheae.Valve management and control module is believed according to the pressure on each remittance tracheae of collection
Number, the pneumatic operated valve of corresponding gas cylinder is opened and closed, realizes and the independent control of gas cylinder and the cycle alternation of work bottle group is recombinated；By to side
Connection of the selected gas cylinder with corresponding remittance air pipe is realized in the keying control of port valve；By pressing stop valve on remittance air pipe by low pressure
Keying control is carried out to high-pressure aerated order, realizes that selected gas cylinder supplies according to the order by low pressure to high pressure for car of being bullied.
Present system adds the combination number of gas cylinder so that gas cylinder utilization rate greatly improves, and carries by using above-mentioned technical proposal
It is high to fill efficiency, reduce bicycle and fill the time, go mother station inflation to strive for more times for bicycle.
Part II：The design of valve management and control module.Independent gas cylinder cycle alternation switching is provided with valve management and control module
The private memory of sequence list and pressure switching threshold.
Start an independent gas cylinder on every group of remittance tracheae after pipeline is connected, when it is filled first.When resetting first,
The pressure of all gas cylinders is same or like, therefore, when filling machine is according to its pipeline set in advance by low pressure to high pressure
When order takes gas by each independent gas cylinder, the gas cylinder connected on its low pressure line is that expenditure is most fast.Therefore pressure switching threshold
Design include low pressure and converge air pressure≤5 ~ 7MPa of tracheae, taxi gas cylinder air pressure just needs to inflate when being less than 1MPa, and low
During storage pressure≤5 ~ 7MPa of pressure remittance tracheae connection, already close to taxi gas cylinder air pressure, it fills speed and can substantially reduced,
Therefore need to abandon the low pressure remittance coconnected gas cylinder of tracheae, introduce new gas cylinder, carry out a gas cylinder restructuring and rearrangement；Automobile
The maximum gas pressure of gas cylinder is close to 20MPa, therefore, when the storage pressure connected and car maximum gas pressure of being bullied approach on high pressure remittance tracheae
When, it is difficult to continue aerating again for car of being bullied, now it is also required to abandon the low pressure remittance coconnected gas cylinder of tracheae, introduces new gas cylinder, enter
Gas cylinder restructuring of row and rearrangement, therefore air pressure≤19 in the design of pressure switching threshold also including high pressure remittance tracheae ~
21MPa。
The design principle of independent gas cylinder cycle alternation transfer sequence table：Abandon low pressure converge the coconnected low pressure gas cylinder of tracheae,
Switching connects the pressure remittance coconnected middle air bottle of tracheae in original, and middle pressure remittance tracheae, which switches, connects the former high pressure remittance coconnected height of tracheae
Air bottle, the independent gas cylinder that high pressure remittance tracheae switching connection newly introduces.As long as ensureing mentioned above principle, the new gas cylinder that introduces can be connected
It is connected on any remittance tracheae.
Part III：Sequential control method.When filling every time less than threshold value, gas cylinder is carried out once according to mentioned above principle
Restructuring and switching sequence.
Using technical scheme, single air cylinder is individually controlled, equivalent to the quantity for adding packet, its
Beneficial effect includes：1）Aerating speed greatly improves, and shorten vehicle unloads the gas time.For example, in gas cylinder parameter and quantity phase
With in the case of, existing unpowered gas station, the time for being originally 300 taxi aeratings needs is 10 hours, but using this
The technical scheme of invention only needs 6 hours can be achieved with, and substantially reduce vehicle unloads the gas time, so goes mother station for trailer
More times have been striven in aerating. 2）Increase gas cylinder module number, single gas cylinder utilization rate improves, be originally one group of gas cylinder≤5 ~
6MPa is just adjusted, and present single air cylinder≤5 ~ 6MPa can be carried out adjusting, and substantially increases and fills speed.
Further, the filling machine is four line filling machines, and the tracheae that converges is identical with the pipeline number of filling machine, is 4 tunnels.
Further, the pressure switching threshold includes low pressure and converges air pressure≤5 ~ 7MPa of tracheae, high pressure converging tracheae
Air pressure≤19 ~ 20MPa.
Further, the low pressure converges the pressure switching threshold of tracheae and is preferentially arranged to≤6MPa or 7MPa, and high pressure converges gas
The pressure switching threshold of pipe is preferentially arranged to≤20MPa.
In the step b, filling machine opens an independence on every road remittance tracheae successively according to the order by low pressure to high pressure
Gas cylinder supplies to car of being bullied.
Further, the switching principle of the independent gas cylinder cycle alternation transfer sequence table is：Low pressure is abandoned to converge on tracheae
Gas cylinder, enable and be connected to this and be abandoned the untapped new gas cylinder converged on tracheae where gas cylinder, and gas is converged according to low pressure
Pipe connects air bottle in original, middle pressure converges that tracheae connects former gas cylinder, high pressure converges tracheae and connects the principle of new gas cylinder and open and close respective valves, real
Now independent gas cylinder is connected with the switching of each remittance tracheae.New introducing gas cylinder is defined in switching principle enables order：By quilt
Where abandoning low pressure gas cylinder a untapped new gas cylinder is taken on remittance tracheae.So both it is easy to maintenance and management, and can maximum
The control and use of valve and pipeline are reduced in degree.
For example, the present invention uses the container for being divided into four groups, every group three gas cylinders, gas cylinders group is numbered according to A, B, C, D,
Every group of independence gas cylinder is numbered in order, respectively A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3, according to above-mentioned switching
Principle, its transfer sequence table such as table 1 below.
Table 1：
| Remittance tracheae/transfer sequence/number | First | 2nd time | 3rd time | The 4th | The 5th | 6th time | 7th time | 8th time | 9th time |
| Low pressure remittance tracheae | A1 | B1 | C1 | D1 | A2 | B2 | C2 | D2 | A3 |
| Secondary middle pressure remittance tracheae | B1 | C1 | D1 | A2 | B2 | C2 | D2 | A3 | B3 |
| Middle pressure remittance tracheae | C1 | D1 | A2 | B2 | C2 | D2 | A3 | B3 | C3 |
| High pressure remittance tracheae | D1 | A2 | B2 | C2 | D2 | A3 | B3 | C3 | D3 |
By above table can be definitely find out, prior art is when one group（Three gas cylinders）When pressure reaches 6MPa,
With regard to needing a flexible pipe to switch on an other trailer, and the present invention just needs to cut when 9 storage pressures reach 6MP
Shift on an other trailer, substantially reduce the usage time of standby trailer, go mother station aerating to strive for more for trailer
Time, fill speed and also greatly improve.
Unpowered compressed natural gas trailer assembly with gas cylinder cycle alternation control system, including trailer, it is fixed on trailer
The gas cylinder in container and container on running gear, it is characterised in that：Also include the disengaging for being connected to gas cylinder in container
Intercommunication controllable valve pipe-line system and valve management and control module between gas port and filling machine, the intercommunication controllable valve pipeline
System includes N（3≤N≤5）It is individual to connect the remittance tracheae of filling machine pipeline respectively, and be respectively connected with every group of remittance tracheae at least one
Stop valve, pressure monitoring device and M（2≤M≤4）Individual gas cylinder, the air inlet/outlet of gas cylinder is by the connecting tube provided with pneumatic operated valve
It is connected with each remittance tracheae, is connected between adjacent remittance tracheae by the bypass pipe provided with by-passing valve；Valve management and control module is according to each
The pressure signal of pressure monitoring device feedback on individual pipeline, controls the keying of corresponding pneumatic operated valve to cut off or access gas cylinder, and
According to independent gas cylinder is recombinated by the order of low pressure to high pressure, the keying of corresponding by-passing valve and stop valve is controlled, realizes independent gas cylinder
With the connection of corresponding remittance tracheae；Gas cylinder by intercommunication controllable valve pipe-line system and valve management and control module formed independent numerical control,
Cycle alternation combined type work bottle group.
Root of gas cylinder in the present invention installs pneumatic operated valve, while the bypass of by-passing valve is provided between adjacent remittance tracheae
Pipe.Valve management and control module opens and closes the pneumatic operated valve of corresponding gas cylinder, realized to gas according to the pressure signal on each remittance tracheae of collection
The cycle alternation restructuring of the independent control and work bottle group of bottle；By keying to by-passing valve control realize selected gas cylinder with it is corresponding
The connection of remittance air pipe；It is real by carrying out keying control by by low pressure to high-pressure aerated order to stop valve on remittance air pipe
It is car supply of being bullied that gas cylinder, which is now selected, according to the order by low pressure to high pressure.Present system increases by using above-mentioned technical proposal
The combination number of gas cylinder is added so that gas cylinder utilization rate greatly improves, and improves and fills efficiency, reduces bicycle and fills the time, is
Bicycle goes mother station inflation to strive for more times.
Further, the high-pressure gas cylinder container assembly is that 25MPa winds bottle bundled tube packaging box assembly, gas cylinder
It is 25MPa wound form gas cylinders.25MPa winding bottle bundled tube containers have that pressure is high, capacious feature, can solve the problem that
Pressure difference is small, the unfavorable factor such as slow that fills speed, increases economic efficiency.
Further, the remittance tracheae is provided with 4 groups, i.e. N is equal to 4, including it is low, secondary in, middle and high pressure pipe, each converge tracheae
On be equipped with 3 gas cylinders, i.e. M is equal to 3.Installation settings of the gas cylinder in container, mean allocation is most reasonable into four groups, often
Group is provided with three gas cylinders, and every group of gas cylinder is provided with a remittance tracheae, and is connected by respective connecting tube with remittance tracheae.
Further, the pressure monitoring device is pressure transmitter.In summary, beneficial effects of the present invention are notable：
1）Gas cylinder installs root pneumatic operated valve, remote control can be carried out by the industrial computer on control cabinet and gas station, instead of opening manually
Valve closing door；2）In the prior art, a bicycle needs 10 hours to 300 taxi aeratings, controllable using intercommunication of the present invention
Pipe-line system and control method are car supply of being bullied, it is thus only necessary to no more than the time of 6 hours, aerating speed greatly improves,
Shorten vehicle unloads the gas time.3）Prior art is one group（Three gas cylinders）When pressure reaches 6MPa, it is necessary to soft one
Pipe is switched on an other trailer, when being that 9 storage pressures reach 6MPa now, just needs to switch to an other trailer
On, therefore shortened the station upper time for parking two trailers simultaneously, go mother station aerating to strive for the more time for trailer.
The present invention is described in detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is intercommunication controllable valve pipe-line system figure in the present invention.
In accompanying drawing, G-01 ~ G-04 represent respectively it is low, secondary in, middle high-pressure converge tracheae；V2-05 ~ V2-08 is represented respectively to be cut
Only valve；A1 ~ A3, B1 ~ B3, C1 ~ C3, D1 ~ D3 represent four groups of gas cylinders respectively；PT1 ~ PT4 distinguishes representative pressure table；V2-09~ V2-
011 represents by-passing valve respectively.
Embodiment
Fig. 1 is that intercommunication controllable valve pipe-line system figure, system include in the present invention：
1）In low, secondary, middle high-pressure converge tracheae G-01 ~ G-04；
2）Stop valve V2-05 ~ the V2-08 and pressure gauge PT1 ~ PT4 being separately positioned on each remittance tracheae；
3）Four groups are connected to gas cylinders group A, B, C, the D each converged on tracheae, and each gas cylinders group is provided with three independent gas cylinders, and
It is connected respectively by the pneumatic operated valve of bottleneck with each remittance tracheae, by the gas cylinder being directly connected on each remittance tracheae according to remittance tracheae row
Sequence is respectively defined as：Low-voltage tube connects gas cylinder A1 ~ A3, secondary middle pressure pipe connects gas cylinder B1 ~ B3, middle pressure pipe connects gas cylinder C1 ~ C3, high-voltage tube connects
Gas cylinder D1 ~ D3；
4）By-passing valve V2-09 ~ the V2-011 being separately positioned between adjacent remittance tracheae.
Signal input parts of the four groups of pressure gauge PT1 ~ PT4 of the above with valve management and control module is connected, the stop valve V2-05
Control terminal of ~ V2-08, by-passing valve V2-09 ~ V2-011 and the pneumatic operated valve controlled end with valve management and control module is connected.
One specific embodiment of control method of the present invention, using intercommunication controllable valve pipe-line system shown in above-mentioned Fig. 1,
Setting is stored with independent gas cylinder cycle alternation transfer sequence table in valve management and control module and the special of pressure switching threshold is deposited
Reservoir, wherein, pressure switching threshold includes low pressure remittance tracheae air pressure≤6MPa, high pressure remittance tracheae air pressure≤20MPa, independent gas cylinder
Cycle alternation transfer sequence table, such as table 1 below.
Table 1：
| Remittance tracheae/transfer sequence/number | First | 2nd time | 3rd time | The 4th | The 5th | 6th time | 7th time | 8th time | 9th time |
| Low pressure remittance tracheae | A1 | B1 | C1 | D1 | A2 | B2 | C2 | D2 | A3 |
| Secondary middle pressure remittance tracheae | B1 | C1 | D1 | A2 | B2 | C2 | D2 | A3 | B3 |
| Middle pressure remittance tracheae | C1 | D1 | A2 | B2 | C2 | D2 | A3 | B3 | C3 |
| High pressure remittance tracheae | D1 | A2 | B2 | C2 | D2 | A3 | B3 | C3 | D3 |
Specific aerating rate-determining steps include：
A. pipeline connects：By each remittance tracheae of first trailer assembly by threeway controllable valve pipeline respectively with filling machine
Unload gas adapter connection；
B. supply first：The order by low pressure to high pressure pre-set according to remittance tracheae is opened on every group of remittance tracheae directly successively
First independent gas cylinder A1, B1, C1, D1 of connection are to car supply of being bullied, until gas cylinder A1 air pressure≤6MPa or gas cylinder D1 air pressure
≤20MPa；
C. second stage supplies：Abandon the gas cylinder A1 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
B1, secondary middle pressure remittance tracheae G-02 connection gas cylinders C1, middle pressure remittance tracheae G-03 connection gas cylinders D1, high pressure remittance tracheae G-04 connection gas cylinders
A2, gas cylinder A2 are bottle second independent gas cylinder of group where being abandoned gas cylinder A1；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder B1, C1, D1, A2 of opening is to car supply of being bullied, until gas cylinder B1 air pressure≤6MPa or gas cylinder A2 air pressure≤20MPa；
D. the phase III supplies：Abandon the gas cylinder B1 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
C1, secondary middle pressure remittance tracheae G-02 connection gas cylinders D1, middle pressure remittance tracheae G-03 connection gas cylinders A2, high pressure remittance tracheae G-04 connection gas cylinders
B2, gas cylinder B2 are bottle second independent gas cylinder of group where being abandoned gas cylinder B1；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder C1, D1, A2, B2 of opening is to car supply of being bullied, until gas cylinder C1 air pressure≤6MPa or gas cylinder B2 air pressure≤20MPa；
E. fourth stage supplies：Abandon the gas cylinder C1 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
D1, secondary middle pressure remittance tracheae G-02 connection gas cylinders A2, middle pressure remittance tracheae G-03 connection gas cylinders B2, high pressure remittance tracheae G-04 connection gas cylinders
C2, gas cylinder C2 are bottle second independent gas cylinder of group where being abandoned gas cylinder C1；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder D1, A2, B2, C2 of opening is to car supply of being bullied, until gas cylinder D1 air pressure≤6MPa or gas cylinder C2 air pressure≤20MPa；
F. the 5th stage supplied：Abandon the gas cylinder D1 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
A2, secondary middle pressure remittance tracheae G-02 connection gas cylinders B2, middle pressure remittance tracheae G-03 connection gas cylinders C2, high pressure remittance tracheae G-04 connection gas cylinders
D2, gas cylinder D2 are bottle second independent gas cylinder of group where being abandoned gas cylinder D1；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder A2, B2, C2, D2 of opening is to car supply of being bullied, until gas cylinder A2 air pressure≤6MPa or gas cylinder D2 air pressure≤20MPa；
G. the 6th stage supplied：Abandon the gas cylinder A2 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
B2, secondary middle pressure remittance tracheae G-02 connection gas cylinders C2, middle pressure remittance tracheae G-03 connection gas cylinders D2, high pressure remittance tracheae G-04 connection gas cylinders
A3, gas cylinder A3 are bottle the 3rd independent gas cylinder of group where being abandoned gas cylinder A2；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder B2, C2, D2, A3 of opening is to car supply of being bullied, until gas cylinder B2 air pressure≤6MPa or gas cylinder A3 air pressure≤20MPa；
H. the 7th stage supplied：Abandon the gas cylinder B2 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
C2, secondary middle pressure remittance tracheae G-02 connection gas cylinders D2, middle pressure remittance tracheae G-03 connection gas cylinders A3, high pressure remittance tracheae G-04 connection gas cylinders
B3, gas cylinder B3 are bottle the 3rd independent gas cylinder of group where being abandoned gas cylinder B2；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder C2, D2, A3, B3 of opening is to car supply of being bullied, until gas cylinder C2 air pressure≤6MPa or gas cylinder B3 air pressure≤20MPa；
I. the 8th stage supplied：Abandon the gas cylinder C2 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
D2, secondary middle pressure remittance tracheae G-02 connection gas cylinders A3, middle pressure remittance tracheae G-03 connection gas cylinders B3, high pressure remittance tracheae G-04 connection gas cylinders
C3, gas cylinder C3 are bottle the 3rd independent gas cylinder of group where being abandoned gas cylinder C2；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder D2, A3, B3, C3 of opening is to car supply of being bullied, until gas cylinder D2 air pressure≤6MPa or gas cylinder C3 air pressure≤20MPa；
J. the 9th stage supplied：Abandon the gas cylinder D2 connected on low pressure remittance tracheae G-01, and low pressure remittance tracheae G-01 connection gas cylinders
A3, secondary middle pressure remittance tracheae G-02 connection gas cylinders B3, middle pressure remittance tracheae G-03 connection gas cylinders C3, high pressure remittance tracheae G-04 connection gas cylinders
D3, gas cylinder D3 are bottle the 3rd independent gas cylinder of group where being abandoned gas cylinder D2；Filling machine according to the order by low pressure to high pressure according to
Secondary gas cylinder A3, B3, C3, D3 of opening is to car supply of being bullied, until gas cylinder A3 air pressure≤6MPa or gas cylinder D3 air pressure≤20MPa；
K. the gas that unloads of this bicycle is completed, the inflation of aerating master station is returned or connects next bicycle.
In summary, beneficial effects of the present invention are notable：1）Gas cylinder installs root pneumatic operated valve, by control cabinet and can add
Industrial computer on gas station carries out remote control, instead of opening and closing valve manually；2）In the prior art, a bicycle is to 300 taxis
Car aerating needs 10 hours, uses the controllable pipe-line system of intercommunication of the present invention and control method as car supply of being bullied, it is thus only necessary to
No more than the time of 6 hours, aerating speed greatly improves, and shorten vehicle unloads the gas time.3）Prior art is one group（Three
Gas cylinder）When pressure reaches 6MPa, it is necessary to a flexible pipe is switched on an other trailer, is 9 storage pressures now
When reaching 6MPa, just need to switch on an other trailer, therefore shortened the station upper time for parking two trailers simultaneously, to drag
Car goes mother station aerating to strive for the more time.
Residual compression is reduced to close to necessary aerating during 1MPa in taxi gas bomb.One 23.98m3（Gas station standard
It is required that no more than 24m3）Long-tube trailer, about 300 taxis can be charged to 20MPa, it is assumed that taxi bottle group be 70
Rise, overbottom pressure 1MPa.
When the past taxi aerating of long-tube trailer bottle group reaches following two any situations, it is impossible to aerating is further continued for, when
Long-tube trailer low pressure bottle group（Less than 6-7MPa）Small with taxi bottle group pressure difference, aerating flow is less than setting value, continues aerating speed
Degree is very slow；Second, long-tube trailer bomb group pressure is less than 20MPa, can not now realize to taxi aerating to 20MPa.Go out
Existing any of the above situation, long-tube trailer low pressure bottle group can not be reused, it is necessary to open gas cylinder or switch to bomb group.
The present invention uses four line intelligent gas dispensers, and long-tube trailer gas cylinder mean allocation is most reasonable into four groups, with my company 12
Exemplified by pipe long-tube trailer, gas cylinder is divided into four groups, every group of three gas cylinders.
Trailer goes mother station to inflate：（1）It is public that aerating post aerating flexible pipe is connected to any one fast-assembling of remittance tracheae G-01~04
On head, while open stop valve V2-05~08 on the pipeline and by-passing valve V2-09~11；（2）Connect instrument in station
Wind, power supply, instrument wind ball valve is opened, press aerating start button, the pneumatic operated valve on trailer is fully open；（3）Start mother station to add
Gas column carries out aerating；（4）Aerating stop button is pressed when trailer is full of, closes whole pneumatic operated valves；（5）Close by-passing valve and fill
Stop valve corresponding to head, ready-packaged joint CNG is emptied, pull down aerating flexible pipe, close instrument wind ball valve, empty instrument wind, disconnect instrument
Table air pipe line and power supply, complete filling for trailer.
Unload gas in trailer substation：（1）Connect instrument air pipe line, power supply, communication cable in station；（2）Will station inner high voltage flexible pipe point
It is not connected to and converges on the fast-assembling head of tracheae G-01~04, opens stop valve V2-05~08, close by-passing valve V2-09~11；（3）
Gas start button is unloaded in pressing, and system opens first pneumatic operated valve of each group in 4 groups；（4）When single bottle pressure is down to 7Mpa system from
It is dynamic to close the trigger valve, the next pneumatic operated valve of the group is opened, when one of which, which unloads gas, to be completed, flexible pipe is pulled down and is installed on other one
On trailer；（5）When 4 flexible pipes of the trailer are all pulled down, deenergization, instrument wind, communication cable are preceding to go mother station to inflate.
When trailer unloads gas in substation, operate the control cabinet in storehouse after container and gas station industrial computer be connected, realization is remotely
Control.
Container is totally enclosed forty foot equivalent unit, and top is bound with aluminium alloy plate, and bottom plate and both sides install steel additional
Matter is prevented fires division board, the problems such as efficiently solving the solar radiation of winding layer, external impact, burn；Gas cylinder is grouped by container,
Every group of gas cylinder pipeline connection installs ball valve and ready-packaged joint and pressure gauge, thermometer additional after collecting, and forms several loading hatch, each
Exhaust-valve is set, and each group can independently enter outlet, while be connected between several groups of pipelines with multiple ball valves so that every on loading hatch
One loading hatch can fill simultaneously to all gas cylinders simultaneously unloads gas；Storehouse sets blowoff line after container；Storehouse is equal before and after container
Safety dumping pipeline, the safety relief device combined on each gas cylinder equipped with rupture disk with fusible alloy, exhaust branch pipe are set
All it is connected with the exhaust main seal of tube, and is vented supervisor and gangs up in the bottom of casing and top, solves the problems, such as safety dumping；
Container bottom surface corner is firmly connected with trailer running gear；Container enters between outlet pipe and air delivering pipeline by fast attaching
Head is connected；Filling machine is pressure self-identifying filling machine, including pressure transmitter, stop valve, pressure automatic identification system and computer
TT＆C system, stop valve, safety valve and pipeline diffusion valve etc. are set respectively on its pipeline that winding bottle is connected with each group；Pipeline
System includes high-pressure hose and air delivering pipeline, and one end of high-pressure hose is connected with winding bottle bundled tube container air inlet/outlet,
The other end is connected with air delivering pipeline.
Claims (10)
- A kind of 1. control method of unpowered compressed natural gas trailer assembly, based on intercommunication controllable valve pipe-line system High-pressure gas cylinder container, detected by the pressure state on each remittance tracheae, realize the independent gas cylinder connected on each remittance tracheae Valve opening and closing regulation and control and independent gas cylinder be connected with the switching of each remittance tracheae, also including being provided with independent gas in methods described The private memory of bottle cycle alternation transfer sequence table and pressure switching threshold, it is characterised in that：The tool of the control method Body step includes：A. pipeline connects：By each remittance tracheae, the tracheae pipe that unloads corresponding with filling machine connects respectively；B. supply：Filling machine opens an independent gas cylinder according to the order from low pressure to high pressure to car supply of being bullied every time, until Low pressure or high pressure unload air pressure in tracheae and are less than pressure switching threshold；C. valve opening and closing regulation and control, gas cylinder and pipeline restructuring：The low pressure for abandoning filling machine unloads the coconnected low pressure gas cylinder of tracheae, enables One untapped new gas cylinder, and tracheae is unloaded with low pressure and connects in original that pressure unloads the middle air bottle connected on tracheae, middle pressure is unloaded tracheae and connect Former high pressure unloads the gas cylinder connected on tracheae, high pressure unloads tracheae and connects new gas cylinder as principle keying respective valves, realizes weight The switching connection for unloading tracheae corresponding with filling machine of the independent gas cylinder of group；D. continue to supply：Filling machine supplies to car of being bullied successively according to the order from low pressure to high pressure, until low pressure or high pressure are unloaded Air pressure is less than pressure switching threshold in tracheae；E. repeat step c ~ d, until new gas cylinder all participates in supply.
- A kind of 2. control method of unpowered compressed natural gas trailer assembly according to claim 1, it is characterised in that：Institute It is four line filling machines to state filling machine, and the tracheae that converges is identical with the pipeline number of filling machine, is 4 tunnels.
- A kind of 3. control method of unpowered compressed natural gas trailer assembly according to claim 1, it is characterised in that：Institute Stating pressure switching threshold includes air pressure≤5 ~ 7MPa of low pressure remittance tracheae, air pressure≤19 ~ 20MPa of high pressure remittance tracheae.
- A kind of 4. control method of unpowered compressed natural gas trailer assembly according to claim 1, it is characterised in that：Institute State low pressure and converge the pressure switching threshold of tracheae and be preferentially arranged to≤6MPa or 7MPa, high pressure converge tracheae pressure switching threshold it is preferential It is arranged to≤20MPa.
- A kind of 5. control method of unpowered compressed natural gas trailer assembly according to claim 1, it is characterised in that：Institute State in step b, filling machine opens every road according to the order from low pressure to high pressure and converges on tracheae an independent gas cylinder to being bullied successively Car supplies.
- 6. a kind of control method of unpowered compressed natural gas trailer assembly, its feature exist according to claim 1 or 5 In：The switching principle of the independent gas cylinder cycle alternation transfer sequence table is：The gas cylinder that low pressure is converged on tracheae is abandoned, enables connection Where this is abandoned gas cylinder converge tracheae on a untapped new gas cylinder, and according to low pressure converge tracheae connect air bottle in original, Middle pressure converges that tracheae connects former gas cylinder, high pressure converges tracheae and connects the principle of new gas cylinder and open and close respective valves, realize independent gas cylinder with it is each The individual switching for converging tracheae connects.
- 7. the unpowered compressed natural gas trailer assembly according to claim 1 with gas cylinder cycle alternation control system, bag The gas cylinder in container and container for include trailer, being fixed on trailer running gear, it is characterised in that：Also include in container The intercommunication controllable valve pipe-line system and valve management and control module being connected between the air inlet/outlet of gas cylinder and filling machine, it is described mutual Formula controllable valve pipe-line system includes N（3≤N≤5）The individual remittance tracheae for connecting filling machine pipeline respectively, and on every group of remittance tracheae It is respectively connected with least one stop valve, pressure monitoring device and M（2≤M≤4）Individual gas cylinder, the air inlet/outlet of gas cylinder is by gas Dynamic valve is connected with each remittance tracheae, is connected between adjacent remittance tracheae by by-passing valve；Valve management and control module is according on each pipeline Pressure monitoring device feedback pressure signal, control the keying of corresponding pneumatic operated valve to cut off or access gas cylinder, and according to restructuring Independent gas cylinder is controlled the keying of corresponding by-passing valve and stop valve, is realized that independent gas cylinder converges with corresponding by the order of low pressure to high pressure The connection of tracheae；Gas cylinder forms independent numerical control, cycle alternation by intercommunication controllable valve pipe-line system and valve management and control module Combined type work bottle group.
- 8. the unpowered compressed natural gas trailer assembly according to claim 7 with gas cylinder cycle alternation control system, its It is characterised by：The high-pressure gas cylinder container assembly is 25MPa winding bottle bundled tube packaging box assemblies, and gas cylinder is 25MPa Wound form gas cylinder.
- 9. the unpowered compressed natural gas trailer assembly according to claim 7 with gas cylinder cycle alternation control system, its It is characterised by：The remittance tracheae is provided with 4 groups, i.e. N is equal to 4, including it is low, secondary in, middle and high pressure pipe, each converge be equipped with 3 on tracheae Individual gas cylinder, i.e. M are equal to 3.
- 10. the unpowered compressed natural gas trailer assembly according to claim 7 with gas cylinder cycle alternation control system, its It is characterised by：The pressure monitoring device is pressure transmitter.
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| CN201610551088.5A CN107620859B (en) | 2016-07-14 | 2016-07-14 | Unpowered natural gas trailer assembly with cycle alternation control system and control method |
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| CN115053096A (en) * | 2020-02-07 | 2022-09-13 | 宝马股份公司 | Pressure vessel arrangement and pressure vessel system |
| CN115284869A (en) * | 2022-08-31 | 2022-11-04 | 三一专用汽车有限责任公司 | Air supply method and device for vehicle-mounted air cylinder and pneumatic vehicle |
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| CN107620859B (en) | 2021-06-22 |
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