A high-pressure hydrogen supply system with emergency power generation function

Abstract

The utility model relates to a high pressure hydrogen supply system with emergency power generation function, including two hydrogen storage bottles fixed in the frame, two hydrogen storage bottles stretch and have the hydrogen inlet and outlet pipeline connected with hydrogenation pipeline, two hydrogen inlet and outlet pipelines are also connected with the hydrogen supply upstream end of hydrogen supply pipeline, the output end of hydrogen supply pipeline is connected with fuel cell module, the outside of frame is provided with replaceable emergency hydrogen bottle, the bottle mouth of emergency hydrogen bottle is detachable with the inlet of third check valve through metal hose, the downstream of third check valve is provided with second high pressure needle valve, the downstream end of second high pressure needle valve is connected with hydrogen supply upstream end. Increase emergency hydrogen bottle outside the frame of two fixed hydrogen storage bottles, the replacement and installation of emergency hydrogen bottle are convenient, in the case that two hydrogen storage bottles run out of hydrogen, emergency hydrogen bottle carries out the temporary supply of hydrogen, simplifies the pipeline structure, the whole replacement of emergency hydrogen bottle, and then cooperate hydrogen fuel cell or hydrogen internal combustion engine can realize the effect that clean and environmental protection, low temperature, quiet environment can also generate electricity.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy technology, specifically to a high-pressure hydrogen supply system with emergency power generation function. Background Technology

[0002] The hydrogen storage system, a crucial component of fuel cell vehicles, is a system that integrates one or more hydrogen storage tanks connected by pipelines onto a frame, along with various electrical components. Its primary function is to store hydrogen fuel in the tanks and output it as a power source when needed. It can also generate electricity in conjunction with a fuel cell or hydrogen internal combustion engine. When the hydrogen in the multiple storage tanks used for vehicle power supply runs out, or when a pipeline malfunctions, an emergency power generation device needs to be activated as a temporary power source. Currently, diesel fuel is the most widely used fuel for emergency power generation. To reduce pipeline complexity and achieve consistency in the overall power supply pipeline, using hydrogen instead of diesel as the emergency power generation fuel requires a redesign of the pipelines and hydrogen storage device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-pressure hydrogen supply system with emergency power generation function, and to solve the problem of combining the hydrogen supply energy storage device with the emergency power generation hydrogen fuel pipeline structure.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A high-pressure hydrogen supply system with emergency power generation function includes two hydrogen storage cylinders fixed within a frame. Hydrogen inlet and outlet pipes extend from the valves of the two storage cylinders, and these pipes merge to connect to a hydrogen refueling pipe. The free end of the refueling pipe is the hydrogen refueling port. The merged hydrogen inlet and outlet pipes also connect to the upstream end of the hydrogen supply pipe. The output end of the hydrogen supply pipe is connected to a fuel cell module. A replaceable emergency hydrogen cylinder is located on the outside of the frame. The cylinder's opening is detachably connected to the inlet of a third one-way valve via a flexible metal hose. A second high-pressure needle valve is located downstream of the third one-way valve, and its downstream end is connected to the upstream end of the hydrogen supply pipe.

[0005] As a preferred embodiment, the hydrogen refueling pipeline is provided with, in sequence from the side near the hydrogen refueling port along the hydrogen injection direction, a first pressure gauge for detecting the gas pressure inside the pipeline, a first filter for filtering impurities from the input hydrogen, and a first one-way valve for preventing hydrogen backflow.

[0006] As a preferred embodiment, a flow control valve for controlling the hydrogen flow rate is installed near the bottle valve on each of the two hydrogen inlet and outlet pipelines. After the two hydrogen inlet and outlet pipelines merge, a first high-pressure needle valve, a second check valve, and a first pressure sensor are sequentially installed along the hydrogen output direction. The downstream end of the first pressure sensor is connected to the upstream end of the hydrogen supply.

[0007] In a preferred embodiment, the hydrogen supply pipeline is sequentially equipped with a second filter for filtering impurities in the output hydrogen, a second pressure gauge for measuring the gas pressure inside the pipeline, and a pressure regulating valve for reducing the pressure of the output hydrogen near the upstream end along the hydrogen flow direction. The middle section of the hydrogen supply pipeline is sequentially connected to the input ends of a pipeline safety valve and a needle valve. The output ends of the pipeline safety valve and the needle valve are respectively connected to the discharge pipeline, which is connected to the discharge port, which is located at the highest point of the entire pipeline. A low-pressure solenoid valve and a low-pressure ball valve are sequentially equipped near the downstream end of the hydrogen supply pipeline. The downstream end of the low-pressure ball valve is the output end of the hydrogen supply pipeline, which is connected to the fuel cell module. The downstream end of the fuel cell module is connected to an energy storage battery or a load.

[0008] As a preferred embodiment, the valves at the mouths of the two hydrogen storage cylinders each extend into a discharge pipe, the downstream of the two discharge pipes is connected to a discharge pipe, and the tail pipes of the two hydrogen storage cylinders are connected to the discharge port.

[0009] The beneficial effects of this utility model are as follows: An emergency hydrogen cylinder is added to the outside of the frame of two fixed hydrogen storage cylinders, facilitating the replacement and installation of the emergency hydrogen cylinder. The two hydrogen storage cylinders serve as containers for the regular storage and release of hydrogen. Hydrogen is added through the hydrogen filling port for storage, and supplied to the fuel cell module through the hydrogen supply pipeline. The emergency hydrogen cylinder is also connected to the hydrogen supply pipeline. When the hydrogen in the two storage cylinders is depleted, the emergency hydrogen cylinder provides temporary hydrogen supply, simplifying the pipeline structure. The emergency hydrogen cylinder is not replenished through the hydrogen filling port; the entire emergency hydrogen cylinder is replaced. Normally, the two storage cylinders are used for repeated hydrogen filling and release, while the emergency hydrogen cylinder is used for temporary hydrogen supply. Hydrogen is used as fuel in both cases. Combined with a hydrogen fuel cell or hydrogen internal combustion engine, it can achieve clean, environmentally friendly, low-temperature, and quiet power generation even in such environments. Attached Figure Description

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 1Explanation of reference numerals in the attached diagram: 1. Hydrogen filling port; 2. First pressure gauge; 3. First filter; 4. First check valve; 5. Overflow valve; 6. Bottle neck valve; 7. Hydrogen storage cylinder; 8. First high-pressure needle valve; 9. Second check valve; 10. First pressure sensor; 11. Second high-pressure needle valve; 12. Third check valve; 13. Emergency hydrogen cylinder; 14. Second filter; 15. Pipeline safety valve; 16. Needle valve; 17. Pressure regulating valve; 18. Low-pressure solenoid valve; 19. Low-pressure ball valve; 20. Fuel cell module; 21. Energy storage battery or load; 22. Metal hose; 23. Discharge port; 24. Hydrogen supply pipeline; 25. Hydrogen filling pipeline; 26. Discharge pipeline; 27. Bottle tail pipeline; 28. Second pressure gauge; 29. ​​Inlet and outlet hydrogen pipelines; 30. Bottle neck discharge pipeline; 31. Hydrogen supply upstream end; 32. Frame. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0012] This utility model describes a high-pressure hydrogen supply system with emergency power generation function. See [link to relevant documentation]. Figure 1 As shown, the system includes two hydrogen storage cylinders 7 fixed within a frame 32. Hydrogen inlet and outlet pipes 29 extend from the valves 6 of the two cylinders 7. These pipes merge and connect to a hydrogen refueling pipe 25. The free end of the refueling pipe 25 is the hydrogen refueling port 1. The two pipes 29 also connect to the upstream hydrogen supply end 31 of a hydrogen supply pipe 24. The output end of the hydrogen supply pipe 24 is connected to a fuel cell module 20. A replaceable emergency hydrogen cylinder 13 is located on the outside of the frame 32. The nozzle of the emergency hydrogen cylinder 13 is detachably connected to the inlet of a third one-way valve 12 via a flexible metal hose 22. A second high-pressure needle valve 11 is located downstream of the third one-way valve 12, and its downstream end is connected to the upstream hydrogen supply end 31.

[0013] Specifically, two large-capacity hydrogen storage cylinders 7 serve as commonly used hydrogen supply containers and can be reused repeatedly by adding hydrogen. An additional replaceable emergency hydrogen cylinder 13 is added on the outside as a backup hydrogen supply container. The emergency hydrogen cylinder 13 does not participate in the hydrogen filling process through the hydrogen filling port 1. When the hydrogen in the two hydrogen storage cylinders 7 is depleted, the emergency hydrogen cylinder 13 can be used temporarily to provide hydrogen. The emergency hydrogen cylinder 13 is replenished with hydrogen energy by replacement. The cylinder opening of the emergency hydrogen cylinder 13 is connected to the third one-way valve 12 on the pipeline through a metal hose 22, which facilitates the placement and connection of the emergency hydrogen cylinder 13. When using the emergency hydrogen cylinder 13 to supply hydrogen, the second high-pressure needle valve 11 is opened, the low-pressure ball valve 19 is opened, and the low-pressure solenoid valve 18 is opened. After the hydrogen pressure is reduced by the pressure regulating valve 17, it enters the fuel cell module 20 to generate electricity.

[0014] In this embodiment, the hydrogen refueling pipeline 25 is sequentially equipped with a first pressure gauge 2 for detecting the gas pressure inside the pipeline, a first filter 3 for filtering impurities from the input hydrogen, and a first one-way valve 4 for preventing hydrogen backflow, arranged from the side closest to the hydrogen refueling port 1 along the hydrogen injection direction. The hydrogen refueling port 1 is connected to an external hydrogen refueling machine, driving the external hydrogen refueling machine's gas source, and the gas is then injected from the hydrogen refueling port 1 into the two hydrogen storage cylinders 7.

[0015] In this embodiment, two hydrogen inlet and outlet pipelines 29 are respectively equipped with flow control valves 5 near the bottle valve 6 for controlling the hydrogen flow rate. After the two hydrogen inlet and outlet pipelines 29 merge, a first high-pressure needle valve 8, a second one-way valve 9 and a first pressure sensor 10 are arranged in sequence along the hydrogen output direction. The downstream of the first pressure sensor 10 is connected to the upstream end 31 of the hydrogen supply.

[0016] In this embodiment, the hydrogen supply pipeline 24 is provided with a second filter 14 for filtering impurities in the output hydrogen, a second pressure gauge 28 for measuring the gas pressure in the pipeline, and a pressure regulating valve 17 for reducing the pressure of the output hydrogen near the upstream end along the hydrogen flow direction. The middle section of the hydrogen supply pipeline 24 is connected to the input ends of the pipeline safety valve 15 and the needle valve 16 in sequence. The output ends of the pipeline safety valve 15 and the needle valve 16 are respectively connected to the discharge pipeline 26. The discharge pipeline 26 is connected to the discharge port 23, which is located at the highest point of the entire pipeline. The hydrogen supply pipeline 24 is provided with a low-pressure solenoid valve 18 and a low-pressure ball valve 19 in sequence near the downstream end. The downstream end of the low-pressure ball valve 19 is the output end of the hydrogen supply pipeline 24, which is connected to the fuel cell module 20. The downstream end of the fuel cell module 20 is connected to the energy storage battery or the load 21. When hydrogen is supplied, the low-pressure ball valve 19 remains open, the first high-pressure needle valve 8 remains open, the bottle valve 6 is opened, the low-pressure solenoid valve 18 is opened, and hydrogen is released from the two hydrogen storage cylinders 7. After passing through the flow control valve 5 and the pressure is reduced by the pressure regulating valve 17, it enters the fuel cell module 20 to generate electricity. The electricity output by the fuel cell module 20 is supplied to the energy storage battery or the load 21.

[0017] In this embodiment, the valves 6 of the two hydrogen storage cylinders 7 each extend into a discharge pipe 30. The downstream of the two discharge pipes 30 is connected to a discharge pipe 26, and the tail pipes 27 of the two hydrogen storage cylinders 7 are connected to the discharge port 23. By opening the venting needle valve 16, opening the first high-pressure needle valve 8 and the second high-pressure needle valve 11, and opening the valves 6, the hydrogen fuel in the hydrogen storage cylinders 7 and the emergency hydrogen cylinder 13 can be vented into the air through the discharge pipes 26. After the hydrogen in the pipes is completely vented, the joints and various valves of the pipe system can be repaired. In case of danger, high temperature or high pressure may occur, and the valves 6 of the two hydrogen storage cylinders 7 and the tail valves may burst. The hydrogen will be discharged from the discharge pipes 30 and 27 and discharged from the discharge port 23, reducing the risk of the two hydrogen storage cylinders 7 exploding due to high temperature and high pressure.

[0018] The working process of this utility model is as follows: As shown in Figure 1, when the hydrogen in the two hydrogen storage cylinders 7 is insufficient, hydrogen is added to the two hydrogen storage cylinders 7 through the hydrogen filling port 1. During the vehicle's operation, the two hydrogen storage cylinders 7 supply fuel to the fuel cell module 20 through the hydrogen inlet / outlet pipeline 29 and the hydrogen supply pipeline 24. When the hydrogen in the two hydrogen storage cylinders 7 is used up and there is no hydrogen refueling station nearby, the emergency hydrogen cylinder 13 is used to supply the fuel cell module 20 as a temporary emergency energy source.

[0019] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-pressure hydrogen supply system with emergency power generation function, characterized in that, The system includes two hydrogen storage cylinders (7) fixed within the frame (32). Each of the two hydrogen storage cylinders (7) has a hydrogen inlet / outlet pipeline (29) extending from its valve (6). The two hydrogen inlet / outlet pipelines (29) merge and are connected to the hydrogen refueling pipeline (25). The free end of the hydrogen refueling pipeline (25) is the hydrogen refueling port (1). The two hydrogen inlet / outlet pipelines (29) merge and are also connected to the upstream end (31) of the hydrogen supply pipeline (24). The output end of the hydrogen supply pipeline (24) is connected to the fuel cell module (20). A replaceable emergency hydrogen cylinder (13) is provided on the outside of the frame (32). The cylinder mouth of the emergency hydrogen cylinder (13) is detachably connected to the inlet of the third check valve (12) via a metal hose (22). A second high-pressure needle valve (11) is provided downstream of the third check valve (12). The downstream end of the second high-pressure needle valve (11) is connected to the upstream end (31) of the hydrogen supply pipeline.

2. The high-pressure hydrogen supply system with emergency power generation function according to claim 1, characterized in that, The hydrogen refueling pipeline (25) is provided with a first pressure gauge (2) for detecting the gas pressure in the pipeline, a first filter (3) for filtering impurities in the input hydrogen, and a first check valve (4) for preventing hydrogen backflow, arranged sequentially from the side near the hydrogen refueling port (1) along the hydrogen injection direction.

3. The high-pressure hydrogen supply system with emergency power generation function according to claim 1, characterized in that, Two hydrogen inlet and outlet pipelines (29) are respectively equipped with flow control valves (5) for controlling the hydrogen flow rate near the bottle valve (6). After the two hydrogen inlet and outlet pipelines (29) merge, a first high pressure needle valve (8), a second check valve (9) and a first pressure sensor (10) are arranged in sequence along the hydrogen output direction. The downstream of the first pressure sensor (10) is connected to the upstream end (31) of the hydrogen supply.

4. The high-pressure hydrogen supply system with emergency power generation function according to claim 1, characterized in that, The hydrogen supply pipeline (24) is provided with a second filter (14) for filtering out impurities in the output hydrogen, a second pressure gauge (28) for measuring the gas pressure in the pipeline, and a pressure regulating valve (17) for reducing the pressure of the output hydrogen in sequence near the upstream of the hydrogen supply pipeline (24). The middle section of the hydrogen supply pipeline (24) is connected to the input end of the pipeline safety valve (15) and the needle valve (16) in sequence. The output ends of the pipeline safety valve (15) and the needle valve (16) are connected to the discharge pipeline (26) respectively. The discharge pipeline (26) is connected to the discharge port (23). The discharge port (23) is located at the highest point of the entire pipeline. The hydrogen supply pipeline (24) is provided with a low-pressure solenoid valve (18) and a low-pressure ball valve (19) in sequence near the downstream of the upstream of the hydrogen supply pipeline (24). The downstream of the low-pressure ball valve (19) is the output end of the hydrogen supply pipeline (24) connected to the fuel cell module (20). The downstream of the fuel cell module (20) is connected to the energy storage battery or the load (21).

5. The high-pressure hydrogen supply system with emergency power generation function according to claim 4, characterized in that, The valves (6) of the two hydrogen storage cylinders (7) extend into the discharge pipes (30), the downstream of the two discharge pipes (30) are connected to the discharge pipe (26), and the tail pipes (27) of the two hydrogen storage cylinders (7) are connected to the discharge port (23).

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