Three-bottle-group gas supply equipment

Abstract

The utility model relates to the technical field of gas-fueled vehicles, and discloses a three-cylinder-group gas supply device which comprises a gas cylinder frame, a first gas cylinder is fixedly connected to the outer wall of the lower side of the gas cylinder frame, a filling opening is fixedly connected to the inner wall of the lower side of the first gas cylinder, and a pressurization stop valve is fixedly connected to the outer wall of the filling opening. The outer wall of the middle of the first gas cylinder is fixedly connected with a first gas return pipe, the outer wall of the lower side of the first gas return pipe is fixedly connected to the outer wall of a pressurization stop valve, the inner wall of the middle of the first gas cylinder is fixedly connected with a liquid outlet stop valve, and the outer wall of the liquid outlet stop valve is fixedly connected to the outer wall of the upper side of the first gas return pipe. And the inner wall of the upper side of the first gas cylinder is fixedly connected with a gas cylinder pressure gauge. Natural gas is conveyed to the buffer tank through the first gas return pipe, the pressure of the natural gas is observed through the buffer pressure gauge to avoid accidents, finally gas is supplied to the automobile through the liquid outlet stop valve, and therefore the effects of improving the gas supply upper limit of gas supply equipment and supplementing gas in a concentrated mode can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas vehicles, in particular to a three-cylinder gas supply device. Background Technique

[0002] A natural gas vehicle is a vehicle that uses compressed natural gas or liquefied natural gas as fuel. Among them, a vehicle using compressed natural gas as fuel realizes the demand for long-distance use by high-pressure compressing natural gas and storing it in a special vehicle gas cylinder. The inflation of the gas cylinder often uses a gas supply device to meet the demand.

[0003] The existing gas supply device stores high-pressure natural gas through a cryogenic storage tank. When the vehicle needs to use natural gas, the high-pressure natural gas flows out of the cryogenic storage tank and is vaporized and inflated through a vaporizer. However, the existing gas supply device has a large self-weight of gas storage and complex operation, resulting in low gas storage capacity of the gas supply device and difficulty in replenishing gas. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a three-cylinder gas supply device, aiming to improve the problems of low gas storage capacity and difficulty in replenishing gas of the gas supply device caused by the large self-weight of gas storage and complex operation of the existing gas supply device.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A three-cylinder gas supply device includes a gas cylinder frame. A first gas cylinder is fixedly connected to the outer wall of the lower side of the gas cylinder frame. A filling port is fixedly connected to the inner wall of the lower side of the first gas cylinder. A booster stop valve is fixedly connected to the outer wall of the filling port. A first return pipe is fixedly connected to the outer wall of the middle part of the first gas cylinder. The lower outer wall of the first return pipe is fixedly connected to the outer wall of the booster stop valve. An outlet stop valve is fixedly connected to the inner wall of the middle part of the first gas cylinder. The outer wall of the outlet stop valve is fixedly connected to the upper outer wall of the first return pipe. A gas cylinder pressure gauge is fixedly connected to the inner wall of the upper side of the first gas cylinder. A second gas cylinder is fixedly connected to the outer wall of the upper side of the gas cylinder frame. A second return pipe is fixedly connected to the inside of the first gas cylinder. A buffer tank is fixedly connected to the inner wall of the gas cylinder frame. A fixing component is arranged on the outer wall of the second gas cylinder, and the fixing component is used for fixing the first gas cylinder and the second gas cylinder.

[0007] Preferably, the fixing component includes a first pulling belt. The lower surface of the first pulling belt is arranged on the outer wall of the second gas cylinder. A second pulling belt is arranged on the outer wall of the first gas cylinder. The outer wall of the second return pipe is fixedly connected to the outer wall of the first pulling belt.

[0008] Preferably, the outer wall of the first pulling belt is fixedly connected to the upper inside of the gas cylinder frame, and the outer wall of the second pulling belt is fixedly connected to the lower inside of the gas cylinder frame.

[0009] Preferably, a buffer pressure gauge is fixedly connected to the inner wall of the lower side of the first gas cylinder, and the inner wall of the buffer pressure gauge is fixedly connected to the outer wall of the buffer tank.

[0010] Preferably, an L-shaped bracket is fixedly connected to the outer wall of the lower side of the gas cylinder frame. A third gas cylinder is fixedly connected to the outer wall of the L-shaped bracket. A pressurizing pipe is fixedly connected to the inside of the third gas cylinder. A third return pipe is fixedly connected to the outer wall of the pressurizing pipe. An outlet pipe is fixedly connected to the outer wall of the third return pipe.

[0011] Preferably, a second safety valve is fixedly connected to the outer wall of the outlet pipe, and a first safety valve is fixedly connected to the outer wall of the third return pipe.

[0012] Preferably, a third pulling belt is fixedly connected to the inner wall of the upper side of the L-shaped bracket, and the lower surface of the third pulling belt is arranged on the outer wall of the upper side of the third gas cylinder.

[0013] Preferably, a cushioning belt is fixedly connected to the inner wall of the lower side of the L-shaped bracket, and the upper surface of the cushioning belt is arranged on the outer wall of the lower side of the third gas cylinder.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, natural gas is transported to the buffer tank through the first return pipe, and the pressure of the natural gas is observed through the buffer pressure gauge to prevent accidents. Finally, the natural gas is supplied to the vehicle through the liquid outlet stop valve, so as to improve the upper limit of the gas supply of the gas supply equipment and achieve the effect of centralized gas replenishment.

[0016] 2. In the utility model, the natural gas in the third gas cylinder is compressed by installing a pressurizing pipe. Then, the natural gas in the third return pipe flows along the pipeline under the action of pressure. Finally, the purpose of flowing out the natural gas from the outlet pipe is realized, so as to achieve the effect of facilitating the gas replenishment of vehicles at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the three-cylinder gas supply equipment proposed by the utility model;

[0018] Figure 2 is a partial structural schematic diagram of the L-shaped bracket of the three-cylinder gas supply equipment proposed by the utility model;

[0019] Figure 3 is a partial structural schematic diagram of the second safety valve of the three-cylinder gas supply equipment proposed by the utility model.

[0020] LEGEND DESCRIPTION:

[0021] 1. Gas cylinder frame; 2. First gas cylinder; 3. Filling port; 4. Buffer pressure gauge; 5. Boost cut-off valve; 6. First return air pipe; 7. Liquid outlet cut-off valve; 8. Gas cylinder pressure gauge; 9. Buffer tank; 10. Second return air pipe; 11. Second gas cylinder; 12. First strap; 13. Second strap; 14. L-shaped bracket; 15. Third gas cylinder; 16. Boost pipe; 17. Third strap; 18. Pad strap; 19. First safety valve; 20. Third return air pipe; 21. Second safety valve; 22. Liquid outlet pipe. Detailed implementation manners

[0022] Next, in combination with the specification drawings of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figure 1 and Figure 2 , an embodiment provided by the present utility model: A three-cylinder gas supply device includes a gas cylinder frame 1. The outer wall of the lower side of the gas cylinder frame 1 is fixedly connected with a first gas cylinder 2. The inner wall of the lower side of the first gas cylinder 2 is fixedly connected with a filling port 3. The outer wall of the filling port 3 is fixedly connected with a boost cut-off valve 5. The outer wall of the middle part of the first gas cylinder 2 is fixedly connected with a first return air pipe 6. The outer wall of the lower side of the first return air pipe 6 is fixedly connected to the outer wall of the boost cut-off valve 5. The inner wall of the middle part of the first gas cylinder 2 is fixedly connected with a liquid outlet cut-off valve 7. The outer wall of the liquid outlet cut-off valve 7 is fixedly connected to the upper side outer wall of the first return air pipe 6. The inner wall of the upper side of the first gas cylinder 2 is fixedly connected with a gas cylinder pressure gauge 8. The outer wall of the upper side of the gas cylinder frame 1 is fixedly connected with a second gas cylinder 11. The inside of the first gas cylinder 2 is fixedly connected with a second return air pipe 10. The inner wall of the gas cylinder frame 1 is fixedly connected with a buffer tank 9. A fixing component is arranged on the outer wall of the second gas cylinder 11. The fixing component is used to fix the first gas cylinder 2 and the second gas cylinder 11;

[0024] Specifically, the natural gas in the first gas cylinder 2 is transported to the buffer tank 9 through the first return air pipe 6, and the pressure of the natural gas is observed through the real-time data of the buffer pressure gauge 4 to avoid accidents. Then, the second gas cylinder 11 and the first gas cylinder 2 are tied to the gas cylinder frame 1 using the first strap 12 and the second strap 13 to prevent falling accidents. At the same time, the gas inside the three gas cylinders is circulated through the second return air pipe 10. When the gas inside the three gas cylinders is consumed, the filling port 3 is used to fill the three gas cylinders with gas. Then, the boost cut-off valve 5 is rotated to liquefy the natural gas to further increase the gas storage capacity. Finally, the liquid outlet cut-off valve 7 is used to supply gas to the vehicle, thereby achieving the effects of improving the gas supply upper limit of the gas supply device and centrally replenishing gas.

[0025] Referring toFigure 1 The fixing component includes a first strap 12, the lower surface of the first strap 12 is disposed on the outer wall of the second gas cylinder 11, a second strap 13 is disposed on the outer wall of the first gas cylinder 2, and the outer wall of the second return gas pipe 10 is fixedly connected to the outer wall of the first strap 12;

[0026] Specifically, the first strap 12 fixes the second gas cylinder 11 on the gas cylinder frame 1, and the second strap 13 fixes the first gas cylinder 2 on the gas cylinder frame 1.

[0027] Refer to Figure 1 and Figure 3 As shown in FIGS. and, the outer wall of the first strap 12 is fixedly connected to the inner side of the upper side of the gas cylinder frame 1, and the outer wall of the second strap 13 is fixedly connected to the inner side of the lower side of the gas cylinder frame 1; a buffer pressure gauge 4 is fixedly connected to the inner wall of the lower side of the first gas cylinder 2, and the inner wall of the buffer pressure gauge 4 is fixedly connected to the outer wall of the buffer tank 9; an L-shaped bracket 14 is fixedly connected to the outer wall of the lower side of the gas cylinder frame 1, a third gas cylinder 15 is fixedly connected to the outer wall of the L-shaped bracket 14, a booster pipe 16 is fixedly connected to the inside of the third gas cylinder 15, a third return gas pipe 20 is fixedly connected to the outer wall of the booster pipe 16, and an outlet pipe 22 is fixedly connected to the outer wall of the third return gas pipe 20; a second safety valve 21 is fixedly connected to the outer wall of the outlet pipe 22, and a first safety valve 19 is fixedly connected to the outer wall of the third return gas pipe 20; a third strap 17 is fixedly connected to the inner wall of the upper side of the L-shaped bracket 14, and the lower surface of the third strap 17 is disposed on the upper side outer wall of the third gas cylinder 15; a cushion strap 18 is fixedly connected to the inner wall of the lower side of the L-shaped bracket 14, and the upper surface of the cushion strap 18 is disposed on the lower side outer wall of the third gas cylinder 15;

[0028] Specifically, the natural gas in the third gas cylinder 15 is pressurized by opening the booster pipe 16, then the natural gas in the third return gas pipe 20 starts to flow, and then the third strap 17 and the cushion strap 18 fix the third gas cylinder 15 on the L-shaped bracket 14. The first safety valve 19 and the second safety valve 21 are installed in the natural gas flow path. When they sense abnormal internal gas pressure, they automatically close to avoid gas leakage, and finally achieve the purpose of flowing the natural gas out from the outlet pipe 22, so as to achieve the effect of facilitating gas filling for vehicles at different heights.

[0029] Working principle: When the gas supply device needs to be used, the natural gas inside the first gas cylinder 2 flows through the first return pipe 6, passes through the buffer tank 9, and the gas pressure is observed through the buffer pressure gauge 4 to see if it is within the safety threshold. At the same time, the second gas cylinder 11 and the first gas cylinder 2 are further fixed on the surface of the gas cylinder frame 1 through the first strap 12 and the second strap 13 to prevent the first gas cylinder 2 and the second gas cylinder 11 from falling off and hurting people. The second gas cylinder 11 is connected to the first gas cylinder 2 through the second return pipe 10 to realize the controllable internal gas circulation and is connected to the third gas cylinder 15. When the gas inside the first gas cylinder 2, the second gas cylinder 11, and the third gas cylinder 15 is insufficient, gas is replenished to the three gas cylinders from the outside through the filling port 3. At the same time, the booster stop valve 5 is opened to boost and compress the gas into a liquid state to further increase the gas storage capacity. Finally, gas is supplied to the vehicle through the liquid outlet stop valve 7, so as to achieve the effect of increasing the gas supply upper limit of the gas supply device and centrally replenishing gas; the gas inside the third gas cylinder 15 is pressurized through the booster pipe 16. At this time, the natural gas circulates through the third return pipe 20. At the same time, the third strap 17 and the cushion strap 18 fix the third gas cylinder 15 to maintain stability during gas supply. During the process of natural gas supply, it passes through the first safety valve 19 and the second safety valve 21. When the internal pressure of the gas supply is abnormal, the first safety valve 19 and the second safety valve 21 are closed to avoid the occurrence of safety accidents. Finally, the purpose of flowing out the natural gas from the liquid outlet pipe 22 is realized, so as to achieve the effect of facilitating the replenishment of gas for vehicles of different heights; the three-cylinder gas supply device can not only achieve the effect of increasing the gas supply upper limit of the gas supply device and centrally replenishing gas, but also achieve the effect of facilitating the replenishment of gas for vehicles of different heights.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Three-bottle group gas supply equipment, including a gas cylinder frame (1), characterized in that: The outer wall of the lower side of the gas cylinder frame (1) is fixedly connected to a first gas cylinder (2). The inner wall of the lower side of the first gas cylinder (2) is fixedly connected to a filling port (3). The outer wall of the filling port (3) is fixedly connected to a pressure boosting cut-off valve (5). The outer wall of the middle part of the first gas cylinder (2) is fixedly connected to a first return gas pipe (6). The outer wall of the lower side of the first return gas pipe (6) is fixedly connected to the outer wall of the pressure boosting cut-off valve (5). The inner wall of the middle part of the first gas cylinder (2) is fixedly connected to a liquid outlet cut-off valve (7). The outer wall of the liquid outlet cut-off valve (7) is fixedly connected to the upper side outer wall of the first return gas pipe (6). The inner wall of the upper side of the first gas cylinder (2) is fixedly connected to a gas cylinder pressure gauge (8). The outer wall of the upper side of the gas cylinder frame (1) is fixedly connected to a second gas cylinder (11). A second return gas pipe (10) is fixedly connected inside the first gas cylinder (2). A buffer tank (9) is fixedly connected to the inner wall of the gas cylinder frame (1). A fixing component is arranged on the outer wall of the second gas cylinder (11), and the fixing component is used for fixing the first gas cylinder (2) and the second gas cylinder (11).

2. The three-bottle group gas supply device according to claim 1, characterized in that: The fixing component includes a first pulling belt (12). The lower surface of the first pulling belt (12) is arranged on the outer wall of the second gas cylinder (11). A second pulling belt (13) is arranged on the outer wall of the first gas cylinder (2). The outer wall of the second return gas pipe (10) is fixedly connected to the outer wall of the first pulling belt (12).

3. The three-bottle group gas supply device according to claim 2, characterized in that: The outer wall of the first pulling belt (12) is fixedly connected to the upper inner part of the gas cylinder frame (1). The outer wall of the second pulling belt (13) is fixedly connected to the lower inner part of the gas cylinder frame (1).

4. The three-bottle group gas supply device according to claim 1, wherein: A buffer pressure gauge (4) is fixedly connected to the inner wall of the lower side of the first gas cylinder (2). The inner wall of the buffer pressure gauge (4) is fixedly connected to the outer wall of the buffer tank (9).

5. The three-bottle group gas supply device according to claim 1, wherein: An L-shaped bracket (14) is fixedly connected to the outer wall of the lower side of the gas cylinder frame (1). A third gas cylinder (15) is fixedly connected to the outer wall of the L-shaped bracket (14). A pressure boosting pipe (16) is fixedly connected inside the third gas cylinder (15). A third return gas pipe (20) is fixedly connected to the outer wall of the pressure boosting pipe (16). A liquid outlet pipe (22) is fixedly connected to the outer wall of the third return gas pipe (20).

6. The three-bottle group gas supply device according to claim 5, characterized in that: A second safety valve (21) is fixedly connected to the outer wall of the liquid outlet pipe (22). A first safety valve (19) is fixedly connected to the outer wall of the third return gas pipe (20).

7. The three-bottle group gas supply device according to claim 6, characterized in that: A third pulling belt (17) is fixedly connected to the upper inner wall of the L-shaped bracket (14). The lower surface of the third pulling belt (17) is arranged on the upper side outer wall of the third gas cylinder (15).

8. The three-bottle group gas supply device according to claim 7, characterized in that: A cushioning belt (18) is fixedly connected to the lower inner wall of the L-shaped bracket (14). The upper surface of the cushioning belt (18) is arranged on the lower side outer wall of the third gas cylinder (15).

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