CN114274767A - Gas supply system of compressed natural gas vehicle - Google Patents
Gas supply system of compressed natural gas vehicle Download PDFInfo
- Publication number
- CN114274767A CN114274767A CN202111672911.5A CN202111672911A CN114274767A CN 114274767 A CN114274767 A CN 114274767A CN 202111672911 A CN202111672911 A CN 202111672911A CN 114274767 A CN114274767 A CN 114274767A
- Authority
- CN
- China
- Prior art keywords
- gas
- gas cylinder
- valve
- compressed natural
- steel pipe
- 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
Links
- 239000007789 gas Substances 0.000 title claims abstract description 222
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000003345 natural gas Substances 0.000 title claims abstract description 40
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 230000001681 protective effect Effects 0.000 claims description 39
- 238000005452 bending Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 9
- 238000012856 packing Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a gas supply system of a compressed natural gas vehicle, which comprises a compressed gas cylinder device, a gas filling device and a pressure reducer, wherein the compressed gas cylinder device comprises a first gas cylinder and a second gas cylinder, and the first gas cylinder and the second gas cylinder are respectively arranged on two sides of the middle position of a frame below a cargo box of the vehicle and are close to an engine of the vehicle; the first gas cylinder and the second gas cylinder are respectively connected with the gas filling device, one end of the pressure reducer is connected with the gas filling device, and the other end of the pressure reducer is connected with the engine; the first gas cylinder and the second gas cylinder are used for storing compressed natural gas, and the gas filling device is used for filling the compressed natural gas into the compressed gas cylinder device or guiding the compressed natural gas in the compressed gas cylinder device out to the pressure reducer. The double-gas-cylinder device can improve the capacity of the compressed gas cylinder device, reduce the leakage risk of a high-pressure pipeline, improve the safety of a vehicle in rear-end collision and ensure the strength of a container.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to an air supply system of a compressed natural gas vehicle.
Background
With the promotion of the national strategic planning on natural gas, the market proportion of the natural gas vehicle is gradually improved due to the advantages of low technical difficulty, easy emission and upgrade, low use cost and the like. Compressed natural gas, CNG for short, is one of the directions for light trucks.
The gas supply system of the natural gas light truck in the prior art usually has one gas cylinder and is arranged behind the automobile, and because the energy density of the compressed natural gas is low, the size of the gas cylinder is required to be large, but the chassis space of the light truck is compact, and only one gas cylinder can be arranged, so that the size of the gas cylinder is greatly limited, the capacity of the gas cylinder is limited, and the cruising mileage of the automobile is short. Meanwhile, the distance from the gas cylinder to the engine is long, and the arranged high-pressure pipeline is long, so that the leakage risk is easy to generate. And the gas cylinder is arranged behind the vehicle, so that the gas cylinder is easy to break or the pipeline is damaged when traffic accidents such as rear-end collision happen, the compressed natural gas leakage accident is caused, and the safety is poor. Moreover, the cargo box is generally installed on the frame longitudinal beam through the cargo box longitudinal beam, the cargo box is equal to the frame longitudinal beam in length, and after the air cylinders are arranged behind the vehicle, the length of the vehicle frame needs to be shortened, so that the part, above the air cylinders, of the rear section of the cargo box is suspended, and the strength of the cargo box is affected. Therefore, how to design an air supply system to avoid the above problems is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The present invention is directed to a compressed natural gas vehicle air supply system, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the gas supply system of the compressed natural gas vehicle comprises a compressed gas cylinder device, a gas filling device and a pressure reducer, wherein the compressed gas cylinder device comprises a first gas cylinder and a second gas cylinder, and the first gas cylinder and the second gas cylinder are respectively arranged on two sides of the middle position of a frame below a vehicle container and are close to an engine of the vehicle; the first gas cylinder and the second gas cylinder are respectively connected with the gas filling device, one end of the pressure reducer is connected with the gas filling device, and the other end of the pressure reducer is connected with the engine; the first gas cylinder and the second gas cylinder are used for storing compressed natural gas, and the gas filling device is used for filling the compressed natural gas into the compressed gas cylinder device or guiding the compressed natural gas in the compressed gas cylinder device out to the pressure reducer.
Preferably, the first air bottle is connected with the frame through a first mounting structure, the first mounting structure comprises a front support, a rear support, a protective bottom plate, a first cable tie and a second cable tie, the front support and the rear support are oppositely arranged on the protective bottom plate, and the front support and the rear support are respectively connected with the frame; the front support and the rear support are respectively provided with an arc-shaped bulge which is matched with the outer circumferential surface of the first gas cylinder; the two ends of the first ribbon are respectively connected with the two ends of the front support, the two ends of the second ribbon are respectively connected with the two ends of the rear support, the front end of the first gas cylinder is pressed on the front support by the first ribbon, and the rear end of the first gas cylinder is pressed on the rear support by the second ribbon.
Preferably, the front bracket is provided with a stop block which is used for being in blocking connection with a step surface at the front end of the first gas cylinder, the stop block is provided with an arc surface which is matched with the outer circumferential surface of the front end of the first gas cylinder, and the arc surface is provided with a rubber protection pad; and a rubber pad is arranged on the arc-shaped bulge.
Preferably, the first mounting structure further comprises a protective side plate located on one side of the protective bottom plate, which is far away from the frame, the protective side plate comprises a side plate body, two anti-collision steel pipes and two fixing supports, the fixing supports are of an L-shaped structure, the two fixing supports are both vertically arranged on the inner wall surface of the side plate body, and the two fixing supports are respectively connected with the front support and the rear support; the anti-collision steel pipe is of a U-shaped structure, and the first air cylinder is located in an opening of the U-shaped structure; and the two anti-collision steel pipes are horizontally arranged on the inner wall surface of the side plate body.
Preferably, the protection side plate further comprises a first protection cover, the front ends of the two anti-collision steel pipes are respectively connected with the first protection cover, and the valve of the first gas cylinder is located in the first protection cover.
Preferably, the upper side and the lower side of the side plate body are both provided with flanges extending inwards; a plurality of through holes are uniformly distributed in the middle of the side plate body.
Preferably, the gas filling device comprises a gas filling valve, a mounting bracket and a three-way valve, the mounting bracket is connected with the frame, and the gas filling valve and the three-way valve are respectively arranged on the mounting bracket; a first end of the three-way valve is connected with the first gas cylinder through a first steel pipe, a second end of the three-way valve is connected with the second gas cylinder through a second steel pipe, and a third end of the three-way valve is connected with the gas filling valve through a third steel pipe; the gas filling valve is connected with the pressure reducer through a fourth steel pipe; the gas adding valve is provided with a gas supply position for communicating the fourth steel pipe with the third steel pipe and a gas charging position for communicating the third steel pipe with an external gas source.
Preferably, the gas filling valve comprises a valve body, a sealing plug, a pressure sensor and a change-over switch, wherein the valve body is provided with a first joint used for being connected with the third steel pipe and a second joint used for being connected with the fourth steel pipe; the valve body is also provided with an air inlet, and the sealing plug is arranged in the air inlet and blocks the air inlet; the valve body is provided with the change-over switch which is used for communicating the second joint with the first joint or communicating the air inlet with the first joint; the pressure sensor is arranged on the valve body.
Preferably, the gas filling device further comprises a second protective cover arranged on the mounting bracket, and the second protective cover covers the gas filling valve.
Preferably, the mounting bracket comprises a flat plate, and the gas adding valve is arranged on the flat plate; the front end of the flat plate is provided with a first bending plate and a second bending plate which are used for being connected with the second protective cover, the middle of the flat plate is provided with a third bending plate which is used for being connected with the three-way valve, and the rear end of the flat plate is provided with a fourth bending plate which is used for being connected with the frame.
The invention has the beneficial effects that:
the gas supply system of the compressed natural gas vehicle of the invention has the first gas cylinder and the second gas cylinder, thereby effectively improving the capacity; meanwhile, the first gas cylinder and the second gas cylinder are respectively arranged on two sides of the middle position of the frame below the cargo box of the vehicle and close to the engine of the vehicle, so that a longer high-pressure pipeline is not needed, and the leakage risk is well reduced; in addition, the first gas cylinder and the second gas cylinder are respectively arranged on two sides of the middle position of the frame, so that the safety of the vehicle in rear-end collision is improved; and first gas cylinder and second gas cylinder set up the both sides at packing box below frame respectively to do not occupy the space of packing box, the length of the frame that does not influence, and then make the unsettled phenomenon can not appear in the packing box, the intensity of having avoided the packing box better receives the influence.
Drawings
In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and the embodiments of the present invention will be further described in detail with reference to the drawings, wherein
Fig. 1 is a schematic diagram of an air supply system of a compressed natural gas vehicle according to an embodiment of the present invention in use;
FIG. 2 is a schematic view of a compressed gas cylinder apparatus according to an embodiment of the present invention in connection with a vehicle frame;
FIG. 3 is a schematic view of a first gas cylinder provided in an embodiment of the present invention when connected to a vehicle frame;
FIG. 4 is a schematic view of a front and rear frame coupled to a vehicle frame according to an embodiment of the present invention;
FIG. 5 is a schematic view of a first gas cylinder secured by a first strap and a second strap in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a front mount provided by an embodiment of the present invention;
FIG. 7 is a schematic view of a rear bracket provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of a first cable tie provided by an embodiment of the present invention;
FIG. 9 is a schematic view of a protective base plate according to an embodiment of the present invention;
FIG. 10 is a schematic view of a protective side panel provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of a gas filling apparatus according to an embodiment of the present invention;
FIG. 12 is a schematic view of a fill valve provided in accordance with an embodiment of the present invention;
fig. 13 is a schematic view of the air-entrapping device according to the embodiment of the present invention when connected to a vehicle frame;
FIG. 14 is a schematic view of a second shield provided in accordance with an embodiment of the present invention;
FIG. 15 is a schematic view of a mounting bracket provided in accordance with an embodiment of the present invention;
fig. 16 is a schematic view of the pressure reducer according to the embodiment of the present invention when connected to a vehicle frame.
In the drawings, the reference numbers:
11. a first gas cylinder 12, a second gas cylinder 13, a step surface 14, a front end head 15 and a valve,
21. a first mounting structure, 22, a second mounting structure, 23, a protective base plate,
231. a vertical plate 232, a limit inclined plane 233, a round hole 24, a front bracket,
241. a stop block 242, a rubber pad 25, a rear support 26, a protective side plate,
261. a first protective cover 262, a fixed bracket 263, an anti-collision steel pipe,
264. side plate body 265, through hole 266, flange 27, first cable tie,
271. a band body 272, a rubber sheath 273, a hook 274 and a stud,
28. a second binding belt, 29, an arc-shaped bulge, 291, a rubber pad, 31 and an air-entrapping device,
32. mounting bracket 321, flat plate 322, first bending plate 323, second bending plate,
324. a third bending plate 325, a fourth bending plate 33, a three-way valve 331, a first end,
332. a second end, 333, a third end, 34, a gas adding valve, 341 and a valve body,
342. a first connector 343, a second connector 344, a sealing plug 345, a change-over switch,
346. a pressure sensor 347, a third joint 35, a first steel pipe 36, a second steel pipe,
37. a third steel pipe, 38, a fourth steel pipe, 39, a rectangular shell, 391, a cover plate,
41. a pressure reducer 42, a connecting bracket 51 and a frame.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description will be provided with reference to specific embodiments.
As shown in fig. 1 to 3, an embodiment of the present invention provides an air supply system for a compressed natural gas vehicle, which includes a compressed gas cylinder device, an air adding device 31, and a pressure reducer 41, wherein the compressed gas cylinder device includes a first gas cylinder 11 and a second gas cylinder 12, and the first gas cylinder 11 and the second gas cylinder 12 are respectively disposed on two sides of a middle position of a frame 51 below a cargo box of the vehicle and are close to an engine of the vehicle; the first gas cylinder 11 and the second gas cylinder 12 are respectively connected with the gas filling device 31, one end of the pressure reducer 41 is connected with the gas filling device 31, and the other end of the pressure reducer is connected with the engine; the first gas cylinder and the second gas cylinder are used for storing compressed natural gas, and the gas filling device 31 is used for filling the compressed natural gas into the compressed gas cylinder device or guiding the compressed natural gas in the compressed gas cylinder device out to the pressure reducer 41.
The gas supply system of the compressed natural gas vehicle provided by the embodiment of the invention is provided with the first gas cylinder 11 and the second gas cylinder 12, so that the capacity can be effectively improved; meanwhile, the first gas cylinder 11 and the second gas cylinder 12 are respectively arranged at two sides of the middle position of the frame 51 below the cargo box of the vehicle and close to the engine of the vehicle, so that a long high-pressure pipeline is not needed, and the leakage risk is well reduced; moreover, the first gas cylinder 11 and the second gas cylinder 12 are respectively arranged at two sides of the middle position of the frame 51, so that the safety of the vehicle in the rear-end collision is improved; moreover, the first gas cylinder 11 and the second gas cylinder 12 are respectively arranged on two sides of the frame 51 below the cargo box, so that the space of the cargo box is not occupied, the length of the frame 51 is not affected, the cargo box is not suspended, and the strength of the cargo box is well prevented from being affected.
As shown in fig. 2 to 10, further, the first air bottle 11 is connected to the frame 51 through a first mounting structure 21, the first mounting structure 21 includes a front bracket 24, a rear bracket 25, a protective bottom plate 23, a first cable tie 27 and a second cable tie 28, the front bracket and the rear bracket are oppositely disposed on the protective bottom plate 23, and the front bracket and the rear bracket are respectively connected to the frame; the front bracket and the rear bracket are respectively provided with an arc-shaped bulge 29 which is matched with the outer circumferential surface of the first gas cylinder; two ends of the first bandage 27 are respectively connected with two ends of the front bracket, two ends of the second bandage 28 are respectively connected with two ends of the rear bracket, the front end of the first gas cylinder is pressed on the front bracket by the first bandage, and the rear end of the first gas cylinder is pressed on the rear bracket by the second bandage. By adopting the scheme, the first air bottle can be more firmly fixed on the front support and the rear support through the first binding belt and the second binding belt, and meanwhile, the first air bottle is supported and limited by the arc-shaped bulge, so that the first air bottle is prevented from shaking in the direction vertical to the axis of the first air bottle; utilize the protection bottom plate to protect the bottom of first gas cylinder, avoided the bottom of first gas cylinder to receive the striking better.
As shown in fig. 8, it is preferable that the first tie 27 includes a tie body 271 and a rubber sheath 272, the tie body may be made of steel, and may be bent along the outer circumference of the upper portion of the first gas cylinder to fasten the first gas cylinder to the front bracket, the upper end of the tie body may be curled to form a hook 273 for being hinged to one end of the front bracket, and the lower end may be welded with a stud 274 for being connected to the other end of the front bracket; the rubber sheath can buckle on the ribbon body, and the rubber sheath plays the guard action and the effect that increases the fastening power to first gas cylinder. The second strap 28 is of the same construction as the first strap.
As shown in fig. 16, a pressure reducer 41 for reducing the pressure of the compressed natural gas supplied from the compressed gas cylinder device to a pressure required by the engine and then supplying the compressed natural gas to the engine may be connected to the frame via a connecting bracket 42. The second gas cylinder 12 can be connected to the frame through a second mounting structure 22, which may be the same as the first mounting structure, and this embodiment is described only with the first mounting structure, and the size of each component in the second mounting structure is adaptively designed according to the size of the second gas cylinder; when in use, any one of the first gas cylinder and the second gas cylinder can be used as a main gas cylinder, and the other one can be used as an auxiliary gas cylinder; the first and second cylinders may be of different or the same size.
Specifically, a stopper 241 for blocking with the step surface 13 at the front end of the first gas cylinder is arranged on the front bracket, an arc surface matched with the outer circumferential surface of the front end 14 of the first gas cylinder is arranged on the stopper, and a rubber protection pad 242 is arranged on the arc surface; be provided with rubber pad 291 on the arc arch to utilize the dog to carry on spacingly to first gas cylinder, in order to avoid first gas cylinder to the place ahead promptly locomotive direction drunkenness, the surface that can avoid first gas cylinder better through rubber protection pad and rubber pad simultaneously receives the damage. It can be understood that the rubber pad is of a U-shaped structure, and the rubber pad can be buckled on the arc-shaped protrusion.
As shown in fig. 10, the first mounting structure further includes a protective side plate 26 located on one side of the protective bottom plate, which is far away from the frame, the protective side plate includes a side plate body 264, two anti-collision steel pipes 263, and two fixing brackets 262, the fixing brackets are L-shaped structures, both the fixing brackets are vertically arranged on the inner wall surface of the side plate body, and the two fixing brackets are respectively connected with the front bracket and the rear bracket; the anti-collision steel pipe is of a U-shaped structure, and the first air cylinder is located in an opening of the U-shaped structure; and the two anti-collision steel pipes are horizontally arranged on the inner wall surface of the side plate body. By adopting the scheme, one side of the first gas cylinder, which is far away from the frame, can be protected through the side plate body and the anti-collision steel pipe, and the front end and the rear end of the first gas cylinder can be protected by utilizing the anti-collision steel pipe, so that the first gas cylinder is better protected. It can be understood that the fixing brackets 262 can be fixed on the side plate body through bolts, the anti-collision steel pipes can be welded on the side plate body, and the lower ends of the two fixing brackets can be fixed on the front bracket and the rear bracket through bolts respectively.
Specifically, the protection side plate further includes a first protection cover 261, two front ends of the anti-collision steel pipes are respectively connected to the first protection cover, and the valve 15 of the first gas cylinder is located in the first protection cover, so that the valve of the first gas cylinder is protected by the first protection cover, and the valve is prevented from being damaged. It will be appreciated that the first cylinder may be opened or closed by the valve.
Preferably, the upper side and the lower side of the side plate body are both provided with inward extending flanges 266; the middle position evenly distributed of curb plate body has a plurality of through-holes 265 to make first cylinder can receive better protection, also make the weight of curb plate body reduce effectively. It can be appreciated that the side panel body can be formed by bending a single steel plate.
As shown in fig. 11 and 13, the air-entrapping device 31 includes an air-entrapping valve 34, a mounting bracket 32, and a three-way valve 33, the mounting bracket 32 is connected to the frame, and the air-entrapping valve 34 and the three-way valve 33 are respectively disposed on the mounting bracket 32; a first end 331 of the three-way valve is connected with the first gas cylinder through a first steel pipe 35, a second end 332 of the three-way valve is connected with the second gas cylinder through a second steel pipe 36, and a third end 333 of the three-way valve is connected with the gas filling valve through a third steel pipe 37; the gas filling valve is connected with the pressure reducer through a fourth steel pipe 38; the gas adding valve is provided with a gas supply position for communicating the fourth steel pipe with the third steel pipe and a gas charging position for communicating the third steel pipe with an external gas source. By adopting the scheme, the connection of the gas filling device, the first gas cylinder, the second gas cylinder and the pressure reducer is conveniently realized; meanwhile, when the gas filling valve is in a gas supply position, compressed natural gas in the first gas cylinder and the second gas cylinder can be supplied to the engine through the pressure reducer, and when the gas filling valve is in a gas filling position, an external gas source can be used for filling gas into the first gas cylinder and the second gas cylinder.
As shown in fig. 12, the gas filling valve comprises a valve body 341, a sealing plug 344, a pressure sensor 346 and a change-over switch 345, wherein the valve body is provided with a first connector 342 used for being connected with the third steel pipe and a second connector 343 used for being connected with the fourth steel pipe; the valve body is also provided with an air inlet, and the sealing plug 344 is arranged in the air inlet and blocks the air inlet; the valve body is provided with the change-over switch which is used for communicating the second joint with the first joint or communicating the air inlet with the first joint; the pressure sensor is arranged on the valve body. By adopting the scheme, the gas filling valve can be conveniently arranged at a gas supply position or a gas filling position only by screwing the change-over switch; meanwhile, the pressure of the compressed natural gas in the valve body can be detected through the pressure sensor, and the gas filling port is sealed through the sealing plug, so that gas leakage is avoided. It can be understood that when the second connector is communicated with the first connector through the change-over switch, the gas filling valve is in a gas supply position; when the gas filling opening is communicated with the first joint through the change-over switch, the gas filling valve is in a gas filling position; the pressure sensor 346 may be disposed in the third fitting 347 of the valve body.
Further, the gas filling device further comprises a second protective cover arranged on the mounting support, and the second protective cover covers the gas filling valve, so that the gas filling valve is protected through the second protective cover.
As shown in fig. 14, it is preferable that the second enclosure comprises a hollow rectangular housing 39, a cover 391, the upper side of which is hinged to the side of the rectangular housing remote from the frame, so that when air is to be added, the cover is simply turned up and the sealing plug in the air inlet is removed. As shown in fig. 4 and 9, a vertical plate 231 may be disposed on one side of the protection bottom plate 23 away from the protection side plate, the vertical plate extends to below the vehicle frame, and the front bracket and the rear bracket are respectively connected to the vertical plate 231; the protective bottom plate is provided with a plurality of round holes 233 to reduce weight; one side of the protective bottom plate close to the protective side plate is provided with a limiting inclined plane 232 used for being connected with the front support and the rear support in a blocking mode so as to limit the front support and the rear support.
As shown in fig. 15, the mounting bracket includes a plate 321 on which the gas filling valve is disposed; the front end of the flat plate is provided with a first bending plate 322 and a second bending plate 323 which are used for being connected with the second protective cover, the middle of the flat plate is provided with a third bending plate 324 which is used for being connected with a three-way valve, and the rear end of the flat plate is provided with a fourth bending plate 325 which is used for being connected with the frame. By adopting the scheme, the connection of the second protective cover, the three-way valve, the frame and the mounting bracket can be conveniently realized. Preferably, the first bending plate, the second bending plate, the third bending plate and the fourth bending plate are bent towards the same side of the flat plate.
The gas supply system adopts double gas cylinders, so that the problem of small volume of a single gas cylinder is effectively solved, the volume of the compressed gas cylinder device can be increased to 3-4 times of that of the traditional single gas cylinder rear scheme, and the problem of short endurance mileage is solved; meanwhile, the safety of each gas cylinder is effectively guaranteed and the safety is improved by respectively arranging the two gas cylinders on the two sides of the frame and arranging the first protective cover, the protective bottom plate and the protective side plates, and moreover, the two gas cylinders are arranged close to the engine, so that the length of a high-pressure pipeline is greatly shortened, and the leakage risk is reduced; and, the frame and the container are consistent with those of the conventional fuel vehicle, thereby improving the universality and the structural safety.
The above are only preferred embodiments of the present invention, it should be noted that these examples are only for illustrating the present invention and not for limiting the scope of the present invention, and after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
Claims (10)
1. The gas supply system of the compressed natural gas vehicle is characterized by comprising a compressed gas cylinder device, a gas filling device and a pressure reducer, wherein the compressed gas cylinder device comprises a first gas cylinder and a second gas cylinder which are respectively arranged on two sides of the middle position of a frame below a vehicle container and close to an engine of the vehicle; the first gas cylinder and the second gas cylinder are respectively connected with the gas filling device, one end of the pressure reducer is connected with the gas filling device, and the other end of the pressure reducer is connected with the engine; the first gas cylinder and the second gas cylinder are used for storing compressed natural gas, and the gas filling device is used for filling the compressed natural gas into the compressed gas cylinder device or guiding the compressed natural gas in the compressed gas cylinder device out to the pressure reducer.
2. The gas supply system for a compressed natural gas vehicle of claim 1, wherein the first gas cylinder is connected to the frame by a first mounting structure, the first mounting structure comprising a front bracket, a rear bracket, a protective base plate, a first tie and a second tie, the front bracket and the rear bracket being disposed opposite to the protective base plate, the front bracket and the rear bracket being connected to the frame, respectively; the front support and the rear support are respectively provided with an arc-shaped bulge which is matched with the outer circumferential surface of the first gas cylinder; the two ends of the first ribbon are respectively connected with the two ends of the front support, the two ends of the second ribbon are respectively connected with the two ends of the rear support, the front end of the first gas cylinder is pressed on the front support by the first ribbon, and the rear end of the first gas cylinder is pressed on the rear support by the second ribbon.
3. The gas supply system of the compressed natural gas vehicle according to claim 2, wherein a stopper for abutting against a step surface of the front end of the first gas cylinder is provided on the front bracket, an arc surface that fits with an outer circumferential surface of the front end of the first gas cylinder is provided on the stopper, and a rubber pad is provided on the arc surface; and a rubber pad is arranged on the arc-shaped bulge.
4. The gas supply system of the compressed natural gas vehicle as claimed in claim 2, wherein the first mounting structure further comprises a protective side plate located on the protective bottom plate on a side away from the frame, the protective side plate comprises a side plate body, two anti-collision steel pipes and two fixing brackets, the fixing brackets are of an L-shaped structure, the two fixing brackets are vertically arranged on the inner wall surface of the side plate body, and the two fixing brackets are respectively connected with the front bracket and the rear bracket; the anti-collision steel pipe is of a U-shaped structure, and the first air cylinder is located in an opening of the U-shaped structure; and the two anti-collision steel pipes are horizontally arranged on the inner wall surface of the side plate body.
5. The gas supply system of claim 4, wherein the protective side plate further comprises a first protective cover, the front ends of the two anti-collision steel pipes are respectively connected with the first protective cover, and the valve of the first gas cylinder is located in the first protective cover.
6. The gas supply system for a compressed natural gas vehicle according to claim 4, wherein the upper side and the lower side of the side plate body are provided with inwardly extending flanges; a plurality of through holes are uniformly distributed in the middle of the side plate body.
7. The gas supply system of claim 1, wherein the gas filling device comprises a gas filling valve, a mounting bracket and a three-way valve, the mounting bracket is connected with the frame, and the gas filling valve and the three-way valve are respectively arranged on the mounting bracket; a first end of the three-way valve is connected with the first gas cylinder through a first steel pipe, a second end of the three-way valve is connected with the second gas cylinder through a second steel pipe, and a third end of the three-way valve is connected with the gas filling valve through a third steel pipe; the gas filling valve is connected with the pressure reducer through a fourth steel pipe; the gas adding valve is provided with a gas supply position for communicating the fourth steel pipe with the third steel pipe and a gas charging position for communicating the third steel pipe with an external gas source.
8. The gas supply system for a compressed natural gas vehicle according to claim 7, wherein the gas supply valve comprises a valve body, a sealing plug, a pressure sensor, and a change-over switch, and the valve body is provided with a first joint for connecting with the third steel pipe and a second joint for connecting with the fourth steel pipe; the valve body is also provided with an air inlet, and the sealing plug is arranged in the air inlet and blocks the air inlet; the valve body is provided with the change-over switch which is used for communicating the second joint with the first joint or communicating the air inlet with the first joint; the pressure sensor is arranged on the valve body.
9. The gas supply system for a compressed natural gas vehicle of claim 7, wherein the gas filling device further comprises a second shield disposed on the mounting bracket, the second shield being disposed outside the gas filling valve.
10. The gas supply system for a compressed natural gas vehicle according to any one of claims 7 to 9, wherein the mounting bracket comprises a flat plate on which the gas supply valve is provided; the front end of the flat plate is provided with a first bending plate and a second bending plate which are used for being connected with the second protective cover, the middle of the flat plate is provided with a third bending plate which is used for being connected with the three-way valve, and the rear end of the flat plate is provided with a fourth bending plate which is used for being connected with the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672911.5A CN114274767A (en) | 2021-12-31 | 2021-12-31 | Gas supply system of compressed natural gas vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672911.5A CN114274767A (en) | 2021-12-31 | 2021-12-31 | Gas supply system of compressed natural gas vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114274767A true CN114274767A (en) | 2022-04-05 |
Family
ID=80879783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111672911.5A Pending CN114274767A (en) | 2021-12-31 | 2021-12-31 | Gas supply system of compressed natural gas vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114274767A (en) |
Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201729193U (en) * | 2010-06-18 | 2011-02-02 | 安徽江淮汽车股份有限公司 | Two-stage stepping rear natural gas bus chassis with novel arrangement structure of steel cylinders |
| CN201792732U (en) * | 2009-12-04 | 2011-04-13 | 北汽福田汽车股份有限公司 | Natural gas vehicle |
| CN102381185A (en) * | 2011-08-30 | 2012-03-21 | 奇瑞汽车股份有限公司 | Novel CNG (compressed natural gas) steel cylinder fixing support |
| CN202528841U (en) * | 2012-04-11 | 2012-11-14 | 上汽依维柯红岩商用车有限公司 | Installation structure of heavy truck liquefied natural gas assembly |
| CN202935162U (en) * | 2012-09-17 | 2013-05-15 | 中国重汽集团济南动力有限公司 | Installation and protection device of gas cylinder |
| CN203093729U (en) * | 2013-03-22 | 2013-07-31 | 四川成都成工工程机械股份有限公司 | Liquefied natural gas supply system suitable for loader |
| CN203358333U (en) * | 2013-07-24 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Side single gas cylinder LNG (liquefied natural gas) feed system for heavy truck |
| CN203401961U (en) * | 2013-08-12 | 2014-01-22 | 北汽福田汽车股份有限公司 | Box for storing gas cylinder |
| CN203864441U (en) * | 2014-05-21 | 2014-10-08 | 安徽江淮汽车股份有限公司 | Lower protective device for LNG gas cylinder |
| CN203902274U (en) * | 2014-05-08 | 2014-10-29 | 山西成功投资集团有限公司 | Single fuel supply system for compressed natural gas |
| CN203979871U (en) * | 2014-07-24 | 2014-12-03 | 徐工集团工程机械股份有限公司 | A kind of loader compressed natural gas air supply system |
| CN203995642U (en) * | 2014-08-13 | 2014-12-10 | 安徽江淮汽车股份有限公司 | A kind of compound rest structure |
| CN204296454U (en) * | 2014-12-15 | 2015-04-29 | 陕西重型汽车有限公司 | Rearmounted CNG gas-cylinder retaining assembly and this commercial car |
| CN204340677U (en) * | 2014-12-23 | 2015-05-20 | 山西大运汽车制造有限公司 | Side LNG gas support assembly |
| CN204488988U (en) * | 2015-03-09 | 2015-07-22 | 中国重汽集团济南动力有限公司 | A kind of liquefied natural gas gas tractor |
| CN104890503A (en) * | 2015-06-09 | 2015-09-09 | 杭叉集团股份有限公司 | CNG gas storage system for forklift |
| CN204774625U (en) * | 2015-06-09 | 2015-11-18 | 杭叉集团股份有限公司 | CNG gas storage system for fork truck |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN204845532U (en) * | 2015-06-18 | 2015-12-09 | 山西成功投资集团有限公司 | Single fuel supply system of pickup truck CNG |
| CN105644351A (en) * | 2014-11-19 | 2016-06-08 | 陕西重型汽车有限公司 | LNG dual-cylinder system for vehicle |
| CN207291666U (en) * | 2017-09-27 | 2018-05-01 | 广西柳工机械股份有限公司 | Natural gas loading machine air bottle mounting structure |
| CN207594727U (en) * | 2017-10-26 | 2018-07-10 | 云南力帆骏马车辆有限公司 | A kind of car right side gas cylinder protective plate and compressed natural gas cargo vehicle |
| CN207594728U (en) * | 2017-10-26 | 2018-07-10 | 云南力帆骏马车辆有限公司 | A kind of automobile left side gas cylinder protective plate and compressed natural gas cargo vehicle |
| CN207842661U (en) * | 2017-12-29 | 2018-09-11 | 陕西重型汽车有限公司 | A kind of automobile-used side full protection CNG gas-cylinder retaining assemblies |
| CN207902169U (en) * | 2017-12-18 | 2018-09-25 | 山东临工工程机械有限公司 | Natural gas loading machine gas cylinder post-modifier |
| CN108757238A (en) * | 2018-05-28 | 2018-11-06 | 安徽江淮汽车集团股份有限公司 | A kind of air inlet system for vehicle |
| CN208896867U (en) * | 2018-10-17 | 2019-05-24 | 安徽江淮汽车集团股份有限公司 | A kind of gas cylinder postposition installing mechanism |
| CN209395580U (en) * | 2018-12-11 | 2019-09-17 | 中国重汽集团济南动力有限公司 | A kind of novel bottom sets that steel bottle filled with compressed natural gas combination is fixed and protective device |
| CN209972171U (en) * | 2019-05-17 | 2020-01-21 | 山东联盟特种装备有限公司 | Vehicle-mounted high-capacity LNG (liquefied natural gas) cylinder protection device |
| CN212219895U (en) * | 2020-03-25 | 2020-12-25 | 北京亿华通科技股份有限公司 | Side hydrogen cylinder fixing device for fuel cell electric automobile |
| CN212354097U (en) * | 2019-11-14 | 2021-01-15 | 中认（沈阳）北方实验室有限公司 | Gas cylinder protective cover |
| CN212719203U (en) * | 2020-06-30 | 2021-03-16 | 三一专用汽车有限责任公司 | Gas cylinder protection device and gas cylinder assembly |
| CN112810432A (en) * | 2021-01-11 | 2021-05-18 | 东风汽车股份有限公司 | Integrated fuel supply device of light LNG (liquefied Natural gas) commercial vehicle |
| CN213261962U (en) * | 2020-09-02 | 2021-05-25 | 江铃汽车股份有限公司 | Fixing device and car of side CNG gas cylinder |
| CN213565611U (en) * | 2020-11-05 | 2021-06-29 | 江苏韦兰德特种装备科技有限公司 | LNG gas cylinder frame for heavy truck |
| CN113428001A (en) * | 2021-08-06 | 2021-09-24 | 西华大学 | Hydrogen fuel passenger car hydrogen bottle system protection device |
| CN215042069U (en) * | 2021-04-28 | 2021-12-07 | 一汽解放汽车有限公司 | LNG gas cylinder device and vehicle |
-
2021
- 2021-12-31 CN CN202111672911.5A patent/CN114274767A/en active Pending
Patent Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201792732U (en) * | 2009-12-04 | 2011-04-13 | 北汽福田汽车股份有限公司 | Natural gas vehicle |
| CN201729193U (en) * | 2010-06-18 | 2011-02-02 | 安徽江淮汽车股份有限公司 | Two-stage stepping rear natural gas bus chassis with novel arrangement structure of steel cylinders |
| CN102381185A (en) * | 2011-08-30 | 2012-03-21 | 奇瑞汽车股份有限公司 | Novel CNG (compressed natural gas) steel cylinder fixing support |
| CN202528841U (en) * | 2012-04-11 | 2012-11-14 | 上汽依维柯红岩商用车有限公司 | Installation structure of heavy truck liquefied natural gas assembly |
| CN202935162U (en) * | 2012-09-17 | 2013-05-15 | 中国重汽集团济南动力有限公司 | Installation and protection device of gas cylinder |
| CN203093729U (en) * | 2013-03-22 | 2013-07-31 | 四川成都成工工程机械股份有限公司 | Liquefied natural gas supply system suitable for loader |
| CN203358333U (en) * | 2013-07-24 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Side single gas cylinder LNG (liquefied natural gas) feed system for heavy truck |
| CN203401961U (en) * | 2013-08-12 | 2014-01-22 | 北汽福田汽车股份有限公司 | Box for storing gas cylinder |
| CN203902274U (en) * | 2014-05-08 | 2014-10-29 | 山西成功投资集团有限公司 | Single fuel supply system for compressed natural gas |
| CN203864441U (en) * | 2014-05-21 | 2014-10-08 | 安徽江淮汽车股份有限公司 | Lower protective device for LNG gas cylinder |
| CN203979871U (en) * | 2014-07-24 | 2014-12-03 | 徐工集团工程机械股份有限公司 | A kind of loader compressed natural gas air supply system |
| CN203995642U (en) * | 2014-08-13 | 2014-12-10 | 安徽江淮汽车股份有限公司 | A kind of compound rest structure |
| CN105644351A (en) * | 2014-11-19 | 2016-06-08 | 陕西重型汽车有限公司 | LNG dual-cylinder system for vehicle |
| CN204296454U (en) * | 2014-12-15 | 2015-04-29 | 陕西重型汽车有限公司 | Rearmounted CNG gas-cylinder retaining assembly and this commercial car |
| CN204340677U (en) * | 2014-12-23 | 2015-05-20 | 山西大运汽车制造有限公司 | Side LNG gas support assembly |
| CN204488988U (en) * | 2015-03-09 | 2015-07-22 | 中国重汽集团济南动力有限公司 | A kind of liquefied natural gas gas tractor |
| CN104890503A (en) * | 2015-06-09 | 2015-09-09 | 杭叉集团股份有限公司 | CNG gas storage system for forklift |
| CN204774625U (en) * | 2015-06-09 | 2015-11-18 | 杭叉集团股份有限公司 | CNG gas storage system for fork truck |
| CN204845532U (en) * | 2015-06-18 | 2015-12-09 | 山西成功投资集团有限公司 | Single fuel supply system of pickup truck CNG |
| CN105089857A (en) * | 2015-07-22 | 2015-11-25 | 诸城福田汽车科技开发有限公司 | LNG-CNG dual fuel power gas supply system and natural gas automobile |
| CN207291666U (en) * | 2017-09-27 | 2018-05-01 | 广西柳工机械股份有限公司 | Natural gas loading machine air bottle mounting structure |
| CN207594727U (en) * | 2017-10-26 | 2018-07-10 | 云南力帆骏马车辆有限公司 | A kind of car right side gas cylinder protective plate and compressed natural gas cargo vehicle |
| CN207594728U (en) * | 2017-10-26 | 2018-07-10 | 云南力帆骏马车辆有限公司 | A kind of automobile left side gas cylinder protective plate and compressed natural gas cargo vehicle |
| CN207902169U (en) * | 2017-12-18 | 2018-09-25 | 山东临工工程机械有限公司 | Natural gas loading machine gas cylinder post-modifier |
| CN207842661U (en) * | 2017-12-29 | 2018-09-11 | 陕西重型汽车有限公司 | A kind of automobile-used side full protection CNG gas-cylinder retaining assemblies |
| CN108757238A (en) * | 2018-05-28 | 2018-11-06 | 安徽江淮汽车集团股份有限公司 | A kind of air inlet system for vehicle |
| CN208896867U (en) * | 2018-10-17 | 2019-05-24 | 安徽江淮汽车集团股份有限公司 | A kind of gas cylinder postposition installing mechanism |
| CN209395580U (en) * | 2018-12-11 | 2019-09-17 | 中国重汽集团济南动力有限公司 | A kind of novel bottom sets that steel bottle filled with compressed natural gas combination is fixed and protective device |
| CN209972171U (en) * | 2019-05-17 | 2020-01-21 | 山东联盟特种装备有限公司 | Vehicle-mounted high-capacity LNG (liquefied natural gas) cylinder protection device |
| CN212354097U (en) * | 2019-11-14 | 2021-01-15 | 中认（沈阳）北方实验室有限公司 | Gas cylinder protective cover |
| CN212219895U (en) * | 2020-03-25 | 2020-12-25 | 北京亿华通科技股份有限公司 | Side hydrogen cylinder fixing device for fuel cell electric automobile |
| CN212719203U (en) * | 2020-06-30 | 2021-03-16 | 三一专用汽车有限责任公司 | Gas cylinder protection device and gas cylinder assembly |
| CN213261962U (en) * | 2020-09-02 | 2021-05-25 | 江铃汽车股份有限公司 | Fixing device and car of side CNG gas cylinder |
| CN213565611U (en) * | 2020-11-05 | 2021-06-29 | 江苏韦兰德特种装备科技有限公司 | LNG gas cylinder frame for heavy truck |
| CN112810432A (en) * | 2021-01-11 | 2021-05-18 | 东风汽车股份有限公司 | Integrated fuel supply device of light LNG (liquefied Natural gas) commercial vehicle |
| CN215042069U (en) * | 2021-04-28 | 2021-12-07 | 一汽解放汽车有限公司 | LNG gas cylinder device and vehicle |
| CN113428001A (en) * | 2021-08-06 | 2021-09-24 | 西华大学 | Hydrogen fuel passenger car hydrogen bottle system protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100925937B1 (en) | Mounting structure for gas tank of vehicle | |
| CN1311998C (en) | Motor vehicle having special arrangement of fuel tank, preliminary muffler and reduction agent tank | |
| US20190105986A1 (en) | Methods and systems for alternative fuel container support | |
| US11396230B2 (en) | Integrated fill system and method | |
| US20160257196A1 (en) | Vehicle mounting assembly for a fuel supply | |
| JP2008037135A (en) | Battery mounting structure of vehicle body rear part | |
| KR20010089360A (en) | Compressed gas fuel storage system | |
| US20150107693A1 (en) | Vehicle mounting assembly for a fuel supply | |
| CN114274767A (en) | Gas supply system of compressed natural gas vehicle | |
| JP2009101865A (en) | High-pressure tank mounted vehicle, and tank assembly | |
| JP2017094885A (en) | Vehicle body structure | |
| CN207938689U (en) | A kind of Vehicular battery box body device | |
| US20130306644A1 (en) | Multi-Piece Vehicle Tank Enclosure | |
| CN106379412B (en) | A kind of body frame structure for automotive of vehicle | |
| CN210821819U (en) | Oil tank assembly and car | |
| RU180776U1 (en) | NATURAL GAS STORAGE SYSTEM | |
| CN210509383U (en) | Mute generator set | |
| JP2004058725A (en) | Valve protective structure | |
| CN218200144U (en) | Oil gas warehousing and transportation oil tank protection device | |
| CN220667680U (en) | Box type diesel generator set | |
| CN217712729U (en) | Heavy truck is with hidden urea case aftertreatment system | |
| CN206031488U (en) | Frame structure of car | |
| CN209833792U (en) | Automatic explosion-proof automobile body frame construction of navigation delivery car | |
| CN215321997U (en) | High-pressure vehicle-mounted hydrogen storage bottle protection device | |
| CN212908330U (en) | Socket panel with rapid positioning and long service life |
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 |