CN117889345A - CNG double-supply system and automobile train - Google Patents

CNG double-supply system and automobile train Download PDF

Info

Publication number
CN117889345A
CN117889345A CN202410029182.9A CN202410029182A CN117889345A CN 117889345 A CN117889345 A CN 117889345A CN 202410029182 A CN202410029182 A CN 202410029182A CN 117889345 A CN117889345 A CN 117889345A
Authority
CN
China
Prior art keywords
cng
trailer
valve
supply system
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410029182.9A
Other languages
Chinese (zh)
Inventor
袁宏明
杨志刚
张文博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Heavy Duty Automobile Co Ltd
Original Assignee
Shaanxi Heavy Duty Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Heavy Duty Automobile Co Ltd filed Critical Shaanxi Heavy Duty Automobile Co Ltd
Priority to CN202410029182.9A priority Critical patent/CN117889345A/en
Publication of CN117889345A publication Critical patent/CN117889345A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0171—Trucks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a CNG double-supply system and an automobile train, comprising a main car CNG supply system arranged on the main car; the trailer CNG supply system is arranged on the trailer; the main car CNG supply system and the trailer CNG supply system are connected in parallel to an air inlet of a main car engine through a communication device and supply air to the main car engine; according to the invention, the space of the train of the automobile is fully utilized, CNG supply systems are distributed on the main car and the trailer, the total volume of the gas cylinders is increased, the requirement of long-distance transportation market on driving mileage is met, the transportation efficiency of the vehicle is improved, the using range of the CNG vehicle can be enlarged, and the development of the CNG vehicle is facilitated.

Description

CNG double-supply system and automobile train
Technical Field
The invention relates to the technical field of automobile transportation, in particular to a CNG double-supply system and an automobile train.
Background
In recent years, CNG (CompressedNatural Gas, compressed natural gas, hereinafter referred to as CNG) car trains are widely used in the market due to clean emission and good economical efficiency. However, the single gas filling time of the CNG vehicle is about 40 minutes, the transportation timeliness can be influenced by the midway gas filling times and the gas filling time, and meanwhile, the CNG vehicle cannot normally run in the areas with insufficient gas filling stations. Therefore, CNG vehicles mainly rely on arranging more gas cylinders with larger volumes, and the total volume of the gas cylinders is increased, so that the driving range of the vehicles is increased, and the requirements of users are met. However, the space for arrangement on the tractor or the cargo vehicle is limited, the gas cylinder group is arranged behind the cab on the premise of meeting the front turning radius of the trailer and ensuring the size of a cargo box, the gas cylinder groups are arranged on two sides of the frame, the total volume of the gas cylinders can reach about 2600L, and the maximum driving mileage of the vehicle can reach about 1100 km; the diesel vehicle can basically reach more than 2000km of driving mileage, compared with CNG vehicles, CNG vehicles have serious shortboards, and the driving mileage is a technical bottleneck of CNG vehicles.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and further provides a CNG double-supply system and an automobile train, wherein the automobile train is provided with the supply system on a trailer, can supply fuel to a main engine, increases the total gas reserves of the automobile train, and increases the driving range of the automobile.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a CNG dual supply system and an automotive train, comprising:
A main vehicle CNG supply system; is arranged on the main vehicle;
a trailer CNG supply system; the device is arranged on a trailer;
the main car CNG supply system and the trailer CNG supply system are connected in parallel to an air inlet of the main car engine through a communication device and supply air to the main car engine.
As a further illustration of the invention, the host-vehicle CNG supply system includes a host-vehicle air supply unit;
the main vehicle air supply unit comprises a first CNG air bottle group, a first overflow valve, a first pressure relief valve, a first high-pressure filter, a first pressure gauge, a hydrothermal pressure relief valve, a first stop valve and a main vehicle air supply pipeline;
the first CNG gas cylinder group, the first overflow valve, the first pressure relief valve, the first high-pressure filter, the first pressure gauge, the hydrothermal pressure relief valve and the first stop valve are connected through a main vehicle gas supply pipeline.
As a further illustration of the invention, the host vehicle CNG supply system further includes a host vehicle filling unit;
The main vehicle filling unit comprises a first filling port, a first air inlet ball valve, a first air inlet one-way valve and a first filling pipeline;
The first air inlet, the first air inlet ball valve and the first air inlet one-way valve are connected through a first filling pipeline; and an air outlet of the first filling pipeline is connected with an air inlet of the first CNG gas cylinder group.
As a further illustration of the invention, the host vehicle CNG supply system further includes a host vehicle cooling water circulation unit;
The main vehicle cooling water circulation unit comprises a cooling water circulation pipeline;
The cooling water circulation pipeline is connected between the hydrothermal pressure reducing valve and the main vehicle engine.
As a further illustration of the invention, the trailer CNG supply system includes a trailer air supply unit;
The trailer gas supply unit comprises a second CNG gas cylinder group, a second overflow valve, a second pressure relief valve, a second high-pressure filter, a second pressure gauge, an electrothermal pressure relief valve, a second stop valve and a trailer gas supply pipeline;
The second CNG gas cylinder group, the second overflow valve, the second pressure relief valve, the second high-pressure filter, the second pressure gauge, the electrothermal pressure relief valve and the second stop valve are connected through a trailer gas supply pipeline; the electrothermal pressure reducing valve is connected with a trailer power supply system.
As a further illustration of the invention, the trailer CNG supply system further includes a trailer filling unit;
the trailer filling unit comprises a second filling port, a second air inlet ball valve, a second air inlet one-way valve and a second filling pipeline
The second air inlet, the second air inlet ball valve and the second air inlet one-way valve are connected through a second filling pipeline; and an air outlet of the second filling pipeline is connected with an air inlet of the second CNG gas cylinder group.
As a further explanation of the invention, the communication device comprises a fuel gas hose, a third pressure relief valve, a communication pipeline and a tee joint;
The gas outlet of the trailer gas supply pipeline is connected with the gas inlet of the gas hose, the gas outlet of the gas hose is connected with the communicating pipeline, a third pressure relief valve and a tee joint are arranged on the communicating pipeline, and the third pressure relief valve is positioned at the upstream of the tee joint; the tee joint is respectively connected with an air outlet of the main vehicle air supply pipeline, an air outlet of the communication pipeline and an air inlet of the main vehicle engine; the tee joint is arranged on the main vehicle.
An automotive train comprising a CNG dual supply system according to any one of the preceding claims;
The main vehicle comprises a tractor and a truck;
the trailer comprises a trailer or a plurality of connected trailers.
Compared with the prior art, the invention has the following beneficial technical effects:
The CNG supply system of the main vehicle is arranged on the main vehicle, the CNG supply system of the trailer is arranged on two sides of the trailer frame, and the CNG supply system of the main vehicle and the CNG supply system of the trailer are connected in parallel to an air inlet of an engine of the main vehicle through a communication device and supply air to the engine of the main vehicle independently; the soft connection of the communication device can ensure the relative movement of the main vehicle and the trailer; according to the invention, the space of the train of the automobile is fully utilized, CNG supply systems are distributed on the main car and the trailer, the total volume of the gas cylinders is increased, the requirement of long-distance transportation market on driving mileage is met, the transportation efficiency of the vehicle is improved, the using range of the CNG vehicle can be enlarged, and the development of the CNG vehicle is facilitated.
Drawings
FIG. 1 is a schematic diagram of a CNG dual supply system provided by an embodiment of the invention;
Fig. 2 is a schematic diagram of an arrangement structure of a CNG dual supply system provided by an embodiment of the present invention on an automobile train.
In the figure: 100. a host vehicle; 200. a trailer; 101. a main vehicle engine; 201. a trailer power supply system;
1. A gas hose; 2. a third pressure relief valve; 3. a communication pipeline; 4. a tee joint; 5. a first CNG cylinder group; 6. a first excess flow valve; 7. a first pressure relief valve; 8. a first high pressure filter; 9. a first pressure gauge; 10. a hydrothermal pressure reducing valve; 11. a first stop valve; 12. a main vehicle air supply pipeline; 13. a first gas inlet; 14. a first air inlet ball valve; 15. a first intake check valve; 16. a first fill line; 17. a second CNG cylinder group; 18. a second excess flow valve; 19. a second pressure relief valve; 20. a second high pressure filter; 21. a second pressure gauge; 22. an electrothermal pressure reducing valve; 23. a second shut-off valve; 24. a trailer air supply pipeline; 25. a second gas inlet; 26. a second air inlet ball valve; 27. a second air intake check valve; 28. a second fill line; 29. and a cooling water circulation pipeline.
Detailed Description
Referring to fig. 1 to 2, in a first aspect, an embodiment of the present invention provides a CNG dual supply system, including:
A main vehicle CNG supply system; is provided on the host vehicle 100;
a trailer CNG supply system; is provided on the trailer 200;
The main car CNG supply system and the trailer CNG supply system are connected in parallel to an air inlet of the main car engine 101 through a communication device and supply air to the main car engine 101; the host vehicle CNG supply system and the trailer CNG supply system can supply air to the host vehicle engine 101 independently.
The CNG supply system of the main vehicle provided by the embodiment of the invention; the main car CNG supply system comprises a main car air supply unit;
The main vehicle air supply unit comprises a first CNG air bottle group 5, a first overflow valve 6, a first pressure relief valve 7, a first high-pressure filter 8, a first pressure gauge 9, a hydrothermal pressure reducing valve 10, a first stop valve 11 and a main vehicle air supply pipeline 12; the first CNG gas cylinder group 5, the first overflow valve 6, the first pressure relief valve 7, the first high-pressure filter 8, the first pressure gauge 9, the hydrothermal pressure relief valve 10 and the first stop valve 11 are connected through a main vehicle gas supply pipeline 12.
The CNG supply system of the main vehicle provided by the embodiment of the invention not only realizes the main vehicle air supply function, but also comprises a main vehicle filling unit;
the main vehicle filling unit comprises a first filling port 13, a first air inlet ball valve 14, a first air inlet one-way valve 15 and a first filling pipeline 16; the first gas filling port 13, the first gas inlet ball valve 14 and the first gas inlet check valve 15 are connected through a first filling pipeline 16, and a gas outlet of the first filling pipeline 16 is connected with a gas inlet of the first CNG gas cylinder group 5.
The CNG supply system of the main vehicle provided by the embodiment of the invention not only realizes the main vehicle air supply function and the main vehicle filling function, but also comprises a main vehicle cooling water circulation unit;
The main vehicle cooling water circulation unit includes a cooling water circulation line 29; the cooling water circulation line 29 is connected between the hydrothermal pressure-reducing valve 10 and the host vehicle engine 101 to form a cooling water circulation system.
It can be seen that when the high pressure gas is converted to low pressure gas at the hydrothermal relief valve 10, it is necessary to absorb heat, which is provided by cooling water of the main vehicle engine 101 of the cooling water circulation system.
When the CNG supply system of the main vehicle works, the first stop valve 11 is opened, fuel gas flows through the first overflow valve 6 and the first pressure relief valve 7 from the first CNG cylinder group 5, impurities in the fuel gas are filtered by the first high-pressure filter 8, the fuel gas is decompressed into low-pressure fuel gas by the high-pressure fuel gas under the action of the hydrothermal decompression valve 10, and then the low-pressure fuel gas enters the air inlet of the engine 101 of the main vehicle; when the first shutoff valve 11 is closed, the main vehicle CNG supply system shuts off the supply of air; if abnormal phenomena such as pipeline breakage and the like occur, the air pressure in the system is suddenly reduced, and the first overflow valve 6 automatically blocks the pipeline to play a role in automatic interception; the first pressure gauge 9 collects high-pressure gas pressure and outputs the high-pressure gas pressure to a main car cab instrument for a driver to check.
The trailer CNG supply system provided by the embodiment of the invention is used as a standby air supply system of an automobile train and comprises a trailer air supply unit;
The trailer gas supply unit comprises a second CNG gas cylinder group 17, a second overflow valve 18, a second pressure relief valve 19, a second high-pressure filter 20, a second pressure gauge 21, an electrothermal decompression valve 22, a second stop valve 23 and a trailer gas supply pipeline 24; the second CNG cylinder group 17, the second overflow valve 18, the second pressure relief valve 19, the second high-pressure filter 20, the second pressure gauge 21, the electrothermal decompression valve 22 and the second stop valve 23 are connected through a trailer air supply pipeline 24, and the electrothermal decompression valve 22 is connected with a trailer power supply system 201.
In addition, the electric heating type pressure reducing valve 22 is adopted in the trailer CNG supply system provided by the embodiment of the invention, and the electric heating type pressure reducing valve 22 of the trailer CNG supply system is connected with the trailer power supply system 201 because the electric heating type pressure reducing valve 22 is far away from the main vehicle engine 101, and provides heat for the trailer power supply system in an electric heating mode.
The trailer CNG supply system provided by the embodiment of the invention not only realizes the trailer air supply function, but also comprises a trailer filling unit;
the trailer filling unit comprises a second filling port 25, a second air inlet ball valve 26, a second air inlet check valve 27 and a second filling pipeline 28, wherein the second air inlet port 25, the second air inlet ball valve 26 and the second air inlet check valve 27 are connected through the second filling pipeline 28; the outlet of the second filling line 28 is connected to the inlet of the second CNG cylinder set 17.
The trailer supply system operates in a similar manner to the main CNG supply system and will not be described in detail.
Above, when the CNG filling is needed, CNG can be filled simultaneously through the main vehicle filling unit and the trailer filling unit; the first inlet check valve 15 and the second inlet check valve 27 of the filling unit ensure that no backflow of filling gas occurs.
The embodiment of the invention provides a communication device; the flexible connection of the communication device can ensure the relative movement of the main vehicle and the trailer.
The communication device comprises a fuel gas hose 1, a third pressure relief valve 2, a communication pipeline 3 and a tee joint 4; the gas outlet of the trailer gas supply pipeline 24 is connected with the gas inlet of the gas hose 1, the gas outlet of the gas hose 1 is connected with the communication pipeline 3, the communication pipeline 3 is provided with a third pressure relief valve 2 and a tee joint 4, and the third pressure relief valve 2 is positioned at the upstream position of the tee joint 4; the tee joint 4 is respectively connected with an air outlet of a main vehicle air supply pipeline 12, an air outlet of a communication pipeline 3 and an air inlet of a main vehicle engine 101; the three-way pipe 4 is provided on the host vehicle 100.
The above-mentioned safety when guaranteeing main car CNG feed system, trailer CNG feed system and intercommunication device maintenance is realized by following:
when the CNG supply system of the main vehicle is maintained, the stop valve 11 and all the cylinder valves of the first CNG cylinder group 5 are closed, the first pressure release valve 7 is opened, and the gas in the gas supply pipeline of the main vehicle is completely discharged and then is maintained;
When the CNG supply system of the trailer is maintained, the second stop valve 23 and all the cylinder valves of the second CNG cylinder group 17 are closed, the second pressure release valve 19 is opened, and the gas in the gas supply pipeline of the trailer is completely discharged and then is maintained;
When the communication device is maintained, only the gas hose 1 is replaced, the first stop valve 11 and the second stop valve 23 are closed, the third pressure release valve 2 is opened, and the maintenance operation is performed after all the gas in the communication pipeline is discharged.
Referring to fig. 1 to fig. 2, in a second aspect, an embodiment of the present invention provides an automobile train, including the CNG dual supply system described above; the working process is similar to the system, so that the description is omitted;
the host vehicle 100 includes a CNG vehicle for outputting power, such as a tractor, a van, or the like.
The trailer 200 includes a trailer or a plurality of connected trailers or the like for providing a backup CNG supply of CNG vehicles.
In summary, compared with the current products, the CNG dual-supply system and the automobile train provided by the embodiment of the invention have the advantages that the total volume of the gas cylinder is increased, the requirement of long-distance transportation on driving mileage can be met, the transportation efficiency of the vehicle is improved, the using range of the CNG vehicle can be enlarged, and the development of the CNG vehicle is facilitated.
The main car CNG supply system, the trailer CNG supply system and the communication device are composed of a plurality of parts and a plurality of connecting pipelines, and the number of the main car CNG supply systems, the trailer CNG supply systems and the communication devices can be arranged according to requirements without limitation; the pipelines are connected together in a communicating manner, the arrangement position of one part relative to the other part on the pipeline is divided into an upstream position and a downstream position according to the flow direction of fuel gas in the pipeline, the upstream position corresponds to the air inlet position of the part, and the downstream position corresponds to the air outlet position of the part.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (8)

1. A CNG dual feed system, comprising:
A main vehicle CNG supply system; is arranged on a main vehicle (100);
a trailer CNG supply system; is arranged on a trailer (200);
The main car CNG supply system and the trailer CNG supply system are connected in parallel to an air inlet of the main car engine (101) through a communication device and supply air to the main car engine (101).
2. A CNG dual supply system according to claim 1, wherein the main car CNG supply system comprises a main car air supply unit;
The main vehicle air supply unit comprises a first CNG air bottle group (5), a first overflow valve (6), a first pressure relief valve (7), a first high-pressure filter (8), a first pressure gauge (9), a hydrothermal pressure relief valve (10), a first stop valve (11) and a main vehicle air supply pipeline (12);
The device is characterized in that the first CNG gas cylinder group (5), the first overflow valve (6), the first pressure relief valve (7), the first high-pressure filter (8), the first pressure gauge (9), the hydrothermal pressure relief valve (10) and the first stop valve (11) are connected through a main vehicle gas supply pipeline (12).
3. A CNG dual feed system according to claim 2, wherein the host vehicle CNG feed system further comprises a host vehicle filling unit;
The main vehicle filling unit comprises a first filling port (13), a first air inlet ball valve (14), a first air inlet one-way valve (15) and a first filling pipeline (16);
The first air charging port (13), the first air inlet ball valve (14) and the first air inlet one-way valve (15) are connected through a first charging pipeline (16); the gas outlet of the first filling pipeline (16) is connected with the gas inlet of the first CNG gas cylinder group (5).
4. A CNG dual supply system according to claim 3, wherein said main car CNG supply system further comprises a main car cooling water circulation unit;
the main vehicle cooling water circulation unit comprises a cooling water circulation pipeline (29);
The cooling water circulation pipeline (29) is connected between the hydrothermal pressure reducing valve (10) and the main vehicle engine (101).
5. A CNG dual supply system according to claim 4, wherein the trailer CNG supply system includes a trailer air supply unit;
The trailer air supply unit comprises a second CNG air bottle group (17), a second overflow valve (18), a second pressure relief valve (19), a second high-pressure filter (20), a second pressure gauge (21), an electrothermal pressure reducing valve (22), a second stop valve (23) and a trailer air supply pipeline (24);
The second CNG gas cylinder group (17), the second overflow valve (18), the second pressure relief valve (19), the second high-pressure filter (20), the second pressure gauge (21), the electrothermal decompression valve (22) and the second stop valve (23) are connected through a trailer gas supply pipeline (24); the electrothermal pressure reducing valve (22) is connected with a trailer power supply system (201).
6. A CNG dual feed system according to claim 5, wherein the trailer CNG feed system further comprises a trailer filling unit;
The trailer filling unit comprises a second filling port (25), a second air inlet ball valve (26), a second air inlet one-way valve (27) and a second filling pipeline (28)
The second air charging port (25), the second air inlet ball valve (26) and the second air inlet one-way valve (27) are connected through a second charging pipeline (28); the air outlet of the second filling pipeline (28) is connected with the air inlet of the second CNG gas cylinder group (17).
7. A CNG dual supply system according to claim 6, wherein the communication means comprises a gas hose (1), a third pressure relief valve (2), a communication line (3) and a tee (4);
The gas outlet of the trailer gas supply pipeline (24) is connected with the gas inlet of the gas hose (1), the gas outlet of the gas hose (1) is connected with the communication pipeline (3), a third pressure release valve (2) and a tee joint (4) are arranged on the communication pipeline (3), and the third pressure release valve (2) is positioned at the upstream position of the tee joint (4); the tee joint (4) is respectively connected with an air outlet of a main vehicle air supply pipeline (12), an air outlet of a communication pipeline (3) and an air inlet of a main vehicle engine (101); the tee joint (4) is arranged on the main vehicle (100).
8. An automotive train comprising a CNG dual supply system according to any one of claims 1 to 7;
the host vehicle (100) comprises a tractor and a truck;
the trailer (200) comprises a trailer or a plurality of connected trailers.
CN202410029182.9A 2024-01-09 2024-01-09 CNG double-supply system and automobile train Pending CN117889345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410029182.9A CN117889345A (en) 2024-01-09 2024-01-09 CNG double-supply system and automobile train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410029182.9A CN117889345A (en) 2024-01-09 2024-01-09 CNG double-supply system and automobile train

Publications (1)

Publication Number Publication Date
CN117889345A true CN117889345A (en) 2024-04-16

Family

ID=90650309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410029182.9A Pending CN117889345A (en) 2024-01-09 2024-01-09 CNG double-supply system and automobile train

Country Status (1)

Country Link
CN (1) CN117889345A (en)

Similar Documents

Publication Publication Date Title
US5603360A (en) Method and system for transporting natural gas from a pipeline to a compressed natural gas automotive re-fueling station
CN104482399B (en) A kind ofly add gas port CNG fuel gas pipeline system for the two of passenger vehicle
WO2019009745A1 (en) Mobile gas filling station
CN208827611U (en) A kind of fuel-cell vehicle on-board hydrogen system
CN205370771U (en) Become energy -conserving internal -combustion engine of jar formula
KR20100114144A (en) Cng refueling system and method with remaining gas feeding apparatus
CN105020574A (en) L-CNG gas station
CN117889345A (en) CNG double-supply system and automobile train
CN102556186A (en) Tank-type semi-trailer of high and medium pressure gases
CN210128238U (en) Plain type car LNG fills dress sled
CN215215733U (en) Quick filling system of hydrogen fuel cell automobile
GB2392659A (en) Breakaway coupling for articulated fuel supply
CN101700770B (en) Automatic high pressure gas supply and supplement device of long pipe semi-trailer
CN111365610B (en) Discharging pressure regulating system applied to hydrogen storage type hydrogenation station
RU2400645C1 (en) System to store and feed gas into transport facility "vniigaz"
CN204358433U (en) A kind ofly add gas port CNG fuel gas pipeline system for the two of passenger vehicle
CN108758332B (en) LNG device of unloading
CN203979871U (en) A kind of loader compressed natural gas air supply system
CN208090315U (en) A kind of CNG sub-station compressor systems of automatic distribution compression ratio
CN209875341U (en) Double-cavity heating oil tank assembly integrated with mechanical three-way valve
CN1250857A (en) Mobile filling station for compressed natural gas automobile
CN210162071U (en) Auxiliary safety braking system of wheel type armored delivery wagon
CN112186221A (en) Vehicle-mounted hydrogen supply device of hydrogen fuel cell passenger car
CN204340666U (en) A kind of Special chassis for gas-fired self-discharging car
CN203793322U (en) Air supplying system of vehicle braking system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination