Hydrogen compression device

Abstract

The utility model discloses a hydrogen compression device which comprises a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor, a cooling device, a pressure adjusting device and a concentration monitoring device, the hydrogen generating device is used for generating hydrogen; the hydrogen storage tank is connected with the hydrogen generation device and is used for receiving and storing generated hydrogen; the hydrogen compressor is connected with the hydrogen storage tank and is used for compressing hydrogen to set pressure; the cooling device is used for cooling and condensing heat and water vapor generated in the hydrogen generation process; the pressure adjusting device is used for monitoring and adjusting the pressure of hydrogen; and the concentration monitoring device is used for monitoring the impurity concentration in hydrogen in real time to provide over-high oxygen concentration protection alarm shutdown for the control system. According to the utility model, the humidity in the hydrogen production process can be reduced, and the oxygen concentration and the pressure in the whole compression process can be monitored in real time, so that the overall safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel, in particular to a hydrogen compression device. Background Art

[0002] Existing hydrogen compression devices usually use a thermal drive method to achieve hydrogen pressurization, and use a multi-tank alternating hydrogen absorption and release method to achieve continuous output of compressed hydrogen and multi-stage parallel operation. For example, reference can be made to a continuous output static hydrogen compression, storage, and filling integrated system with publication number CN109578812A. This method may be affected by the humidity of the environment, and due to the inability to monitor oxygen concentration and pressure in real time, safety issues may arise. For this reason, it is urgent to propose a hydrogen compression device to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a hydrogen compression device, which can reduce the humidity in the process of hydrogen generation, and can also monitor the oxygen concentration and the pressure in the whole compression process in real time, so as to improve the overall safety. At the same time, it is also designed to use nitrogen to replace the air in the hydrogen storage tank and pipeline for the first time, or to use water injection and drainage method to replace the air or nitrogen in the hydrogen storage tank and pipeline, so as to achieve hydrogen filling with a single replacement.

[0004] In order to solve the above technical problems, the utility model provides a hydrogen compression device, including a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor, a cooling device, a pressure regulating device and a concentration monitoring device;

[0005] The hydrogen generating device is used to generate hydrogen; the hydrogen storage tank is connected to the hydrogen generating device and is used to receive and store the generated hydrogen; the hydrogen compressor is connected to the hydrogen storage tank and is used to compress the hydrogen to a set pressure; the cooling device is used to cool the heat generated during the hydrogen generation process; the pressure regulating device is used to regulate the pressure of the hydrogen; and the concentration monitoring device is used to monitor the impurity concentration in the hydrogen.

[0006] Further, the hydrogen generation device includes a nitrogen source input device, a hydrogen source input device, a first valve, a one-way valve, a second valve, a third valve and a fourth valve;

[0007] One end of the first valve is used to connect the nitrogen source input device, and the other end is connected to one end of the cooling device; one end of the cooling device is connected to the hydrogen source input device and the pressure regulating device, and the other end is connected to the one-way valve; one end of the one-way valve away from the cooling device is connected to the input end of the hydrogen storage tank; the pressure regulating device and the concentration monitoring device are both connected between the cooling device and the one-way valve; the output end of the hydrogen storage tank is connected to one end of the second valve; the other end of the second valve is connected to the input end of the hydrogen compressor; the output end of the hydrogen compressor is connected to the third valve; one end of the third valve away from the hydrogen compressor is connected to the input end of the hydrogen storage tank; the output end of the hydrogen storage tank outputs hydrogen through a fourth valve, and the outlet end of the hydrogen storage tank is used to be connected to a water injection device for drainage, exhaust or water injection operations; the pressure regulating device is connected to the hydrogen storage tank.

[0008] Furthermore, a fifth valve is connected between the first valve and the third valve.

[0009] Furthermore, the hydrogen storage tank includes a low-pressure hydrogen storage tank and a high-pressure hydrogen storage tank; the input end and the output end of the low-pressure hydrogen storage tank are respectively connected to the one-way valve and the second valve; the input end and the output end of the high-pressure hydrogen storage tank are respectively connected to the third valve and the fourth valve.

[0010] Furthermore, the outlet end of the low-pressure hydrogen storage tank is connected to a sixth valve.

[0011] Furthermore, the outlet end of the high-pressure hydrogen storage tank is connected to a seventh valve.

[0012] Furthermore, the cooling device includes a condenser; the input end of the condenser is connected to the other end of the first valve, and the output end is connected to the one-way valve; the condenser is connected to a gas-liquid separator.

[0013] Further, the pressure regulating device includes a first pressure relief valve, a first sensor, an eighth valve, a second sensor, a ninth valve and a second pressure relief valve;

[0014] One end of the first pressure relief valve is connected to the condenser, and the other end is connected to the concentration monitoring device; the first sensor is connected to the low-pressure hydrogen storage tank and one end of the eighth valve; the second sensor is connected to the high-pressure hydrogen storage tank and one end of the ninth valve; the other end of the ninth valve is connected to the other end of the eighth valve; one end of the second pressure relief valve is connected to the high-pressure hydrogen storage tank, and the other end is connected to the concentration monitoring device.

[0015] Furthermore, both the first sensor and the second sensor are pressure sensors.

[0016] Further, the concentration monitoring device includes a pressure reducing valve, an oxygen concentration detection sensor, a tenth valve and an eleventh valve;

[0017] One end of the pressure reducing valve is connected between the condenser and the one-way valve, and is also connected to one end of the eleventh valve; the other end of the pressure reducing valve is connected to one end of the oxygen concentration detection sensor; the other end of the oxygen concentration detection sensor is connected to one end of the tenth valve, and the other end is connected to the eleventh valve, the first pressure relief valve and the second pressure relief valve.

[0018] Through the above technical solution, the utility model has the following beneficial effects:

[0019] Through the arrangement of a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor, a cooling device, a pressure regulating device and a concentration monitoring device; and the hydrogen generating device is used to generate hydrogen; the hydrogen storage tank is connected to the hydrogen generating device for receiving and storing the generated hydrogen; the hydrogen compressor is connected to the hydrogen storage tank for compressing the hydrogen to a set pressure; the cooling device is used to cool the heat generated during the hydrogen generation process; the pressure regulating device is used to regulate the pressure of the hydrogen; and the concentration monitoring device is used to monitor the concentration of impurities in the hydrogen. The device can reduce the humidity in the hydrogen generation process (i.e., the humidity in the hydrogen production by electrolysis) through the cooling device, and can also detect the concentration of oxygen in real time through the oxygen concentration detection sensor in the concentration monitoring device, thereby improving the overall safety. In addition, the device can ensure the pressure safety of each component and pipeline through the pressure relief valve in the pressure regulating device, and can also monitor the inlet and outlet pressures in the device in real time through the pressure sensor in the pressure regulating device. In addition, the utility model is also designed to use nitrogen to replace the air in the hydrogen storage tank and the pipeline for the first time, or to replace the air or nitrogen in the hydrogen storage tank and the pipeline by water injection and drainage, so that hydrogen can be filled in a single replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a hydrogen compression device in one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a hydrogen compression device in one embodiment of the utility model.

[0022] In the figure, 10 is the first valve; 11 is the one-way valve; 12 is the second valve; 13 is the third valve; 14 is the fourth valve; 15 is the fifth valve; 16 is the sixth valve; 17 is the seventh valve;

[0023] 20. Condenser; 21. Gas-liquid separator;

[0024] 30. First pressure relief valve; 31. First sensor; 32. Eighth valve; 33. Second sensor; 34. Ninth valve; 35. Second pressure relief valve;

[0025] 40. Pressure reducing valve; 41. Oxygen concentration detection sensor; 42. Tenth valve; 43. Eleventh valve;

[0026] 51. Low-pressure hydrogen storage tank; 52. High-pressure hydrogen storage tank; 6. Hydrogen compressor. DETAILED DESCRIPTION

[0027] A hydrogen compression device of the utility model will be described in more detail below in conjunction with the accompanying drawings, wherein preferred embodiments of the utility model are shown. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the utility model.

[0028] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0029] like Figure 1-2 As shown, an embodiment of the utility model proposes a hydrogen compression device, including a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor 6, a cooling device, a pressure regulating device and a concentration monitoring device.

[0030] Specifically, the hydrogen generating device is used to generate hydrogen; the hydrogen storage tank is connected to the hydrogen generating device, and is used to receive and store the generated hydrogen; the hydrogen compressor 6 is connected to the hydrogen storage tank, and is used to compress the hydrogen to a set pressure; the cooling device is used to cool and condense the heat and water vapor generated during the hydrogen generation process; the pressure regulating device is used to monitor and regulate the pressure of the hydrogen; the concentration monitoring device is used to monitor the impurity concentration in the hydrogen in real time to provide the control system with an excessive oxygen concentration protection alarm shutdown.

[0031] In this embodiment, the hydrogen generating device includes a nitrogen source input device, a hydrogen source input device, a first valve 10 , a one-way valve 11 , a second valve 12 , a third valve 13 and a fourth valve 14 .

[0032] In one embodiment, the hydrogen storage tank includes a low-pressure hydrogen storage tank 51 and a high-pressure hydrogen storage tank 52; the input end and the output end of the low-pressure hydrogen storage tank 51 are respectively connected to the one-way valve 11 and the second valve 12; the input end and the output end of the high-pressure hydrogen storage tank 52 are respectively connected to the third valve 13 and the fourth valve 14.

[0033] Specifically, one end of the first valve 10 is used to connect the nitrogen source input device, and the other end is connected to one end of the cooling device; one end of the cooling device is connected to the hydrogen source input device and the pressure regulating device, and the other end is connected to the one-way valve 11; the one end of the one-way valve 11 away from the cooling device is connected to the input end of the low-pressure hydrogen storage tank 51; the pressure regulating device and the concentration monitoring device are both connected between the cooling device and the one-way valve 11; the output end of the low-pressure hydrogen storage tank 51 is connected to one end of the second valve 12; the other end of the second valve 12 is connected to the input end of the hydrogen compressor 6; the output end of the hydrogen compressor 6 is connected to the third valve 13; the end of the third valve 13 away from the hydrogen compressor 6 is connected to the input end of the high-pressure hydrogen storage tank 52; the output end of the high-pressure hydrogen storage tank 52 outputs hydrogen through the fourth valve 14, and the outlet ends of the low-pressure hydrogen storage tank 51 and the high-pressure hydrogen storage tank 52 are used to be connected to the water injection device for drainage, exhaust or water injection operations; the pressure regulating device is connected to the hydrogen storage tank.

[0034] In this embodiment, a fifth valve 15 is connected between the first valve 10 and the third valve 13 .

[0035] Wherein, the outlet end of the low-pressure hydrogen storage tank 51 is connected to a sixth valve 16 .

[0036] Furthermore, the outlet end of the high-pressure hydrogen storage tank 52 is connected to a seventh valve 17 .

[0037] In this embodiment, the cooling device includes a condenser 20; the input end of the condenser 20 is connected to the other end of the first valve 10, and the output end is connected to the one-way valve 11; the condenser 20 is connected to a gas-liquid separator 21. By setting the condenser 20, the humidity in the hydrogen production by electrolysis can be reduced.

[0038] In this embodiment, the pressure regulating device includes a first pressure relief valve 30 , a first sensor 31 , an eighth valve 32 , a second sensor 33 , a ninth valve 34 and a second pressure relief valve 35 .

[0039] Specifically, one end of the first pressure relief valve 30 is connected to the condenser 20, and the other end is connected to the concentration monitoring device; the first sensor 31 is connected to the low-pressure hydrogen storage tank 51 and one end of the eighth valve 32; the second sensor 33 is connected to the high-pressure hydrogen storage tank 52 and one end of the ninth valve 34; the other end of the ninth valve 34 is connected to the other end of the eighth valve 32; one end of the second pressure relief valve 35 is connected to the high-pressure hydrogen storage tank 52, and the other end is connected to the concentration monitoring device. By setting the pressure relief valve, the pressure safety of each component and pipeline can be guaranteed.

[0040] Preferably, the first sensor 31 and the second sensor 33 are both pressure sensors. This embodiment further includes a pressure gauge, on which the first sensor 31 and the second sensor 33 are both mounted, and the pressure gauge is mounted on the low-pressure hydrogen storage tank 51 or the high-pressure hydrogen storage tank 52. By setting the pressure gauge and the pressure sensor, the inlet and outlet pressures of the compression system (i.e., the inlet and outlet pressures of the device) can be monitored in real time.

[0041] In this embodiment, the concentration monitoring device includes a pressure reducing valve 40 , an oxygen concentration detection sensor 41 , a tenth valve 42 and an eleventh valve 43 .

[0042] Specifically, one end of the pressure reducing valve 40 is connected between the condenser 20 and the one-way valve 11, and is also connected to one end of the eleventh valve 43; the other end of the pressure reducing valve 40 is connected to one end of the oxygen concentration detection sensor 41; the other end of the oxygen concentration detection sensor 41 is connected to one end of the tenth valve 42, and the other end is connected to the eleventh valve 43, the first pressure relief valve 30 and the second pressure relief valve 35. The oxygen concentration can be detected in real time by the oxygen concentration detection sensor 41, thereby improving and ensuring safety.

[0043] In this embodiment, first, start the preparation work: first use nitrogen to purge the entire pipeline of the device, for example, close all valves, and add water to the gas-liquid separator 21. Nitrogen is reduced to 1.2-2.5 barg through the pressure reducing valve 40 (specific settings can be made according to actual conditions). Open the sixth valve 16 and the seventh valve 17; then open the first valve 10 and the fifth valve 15; then open the eleventh valve 43, the eighth valve 32, the second valve 12, the third valve 13, the ninth valve 34, and the fourth valve 14, the one-way valve 11 and the pressure reducing valve 40 can be opened slightly. After about 1 minute, close the one-way valve 11, the fourth valve 14, the ninth valve 34, the ninth valve 34, the seventh valve 17, the fifth valve 15, the third valve 13, the second valve 12, the eighth valve 32, the sixth valve 16, the eleventh valve 43 and the first valve 10 in sequence. Then the hydrogen storage tank is filled with water and exhausted, for example, a water injection pump (24V about 40W Zhongke water pump or similar water pump) is connected to the sixth valve 16 and the seventh valve 17, and then the eighth valve 32 and the ninth valve 34 are opened, and then the sixth valve 16 and the seventh valve 17 are opened, and then the water pump is turned on to inject water until the eighth valve 32 and the ninth valve 34 are both out of water, and then the water pump and the sixth valve 16, the seventh valve 17, the eighth valve 32 and the ninth valve 34 are closed. Then remove the water pump, test the oxygen concentration in hydrogen, for example, open the eleventh valve 43, turn on the fan of the condenser 20, start the electrolytic hydrogen production system (i.e., the hydrogen generation device) to produce hydrogen at a power of about 100%. The pressure reducing valve 40 is adjusted to 0.1 barg before installation, and then the tenth valve 42 is opened, and the eleventh valve 43 is adjusted so that the output pressure of the pressure reducing valve 40 can reach 0.1 barg, and the oxygen concentration in the hydrogen is read and observed. Electrolysis produces hydrogen to drain the water in the hydrogen storage tank, for example, turn on the fan of the condenser 20, start the electrolysis hydrogen production system to produce hydrogen, open the sixth valve 16 to drain the low-pressure hydrogen storage tank 51, until the sixth valve 16 discharges hydrogen to the outside through the pipeline; then open the eighth valve 32, close the sixth valve 16, open the second valve 12, the third valve 13 and the seventh valve 17, and close the eighth valve 32 until the pressure of the low-pressure hydrogen storage tank 51 reaches 0.9 barg. Start the hydrogen compressor 6, observe the medium and high pressure hydrogen storage tank 52 drain water to the seventh valve 17 to discharge hydrogen, then open the ninth valve 34, close the seventh valve 17 and the ninth valve 34, observe that the hydrogen pressure of the ninth valve 34 reaches 3 barg, and stop the electrolysis hydrogen production system (i.e., the hydrogen generation device).

[0044] Secondly, enter the startup process: turn on the fan of the condenser 20, start the electrolytic hydrogen production system (i.e., hydrogen generation device) with a power of about 5 to 10 kW (specific settings can be made according to actual conditions) to produce hydrogen, and start the hydrogen compressor 6 (set to shut down when the pressure is below 0.5 barg, and shut down at high pressure of 7 barg). Open the one-way valve 11 and the fourth valve 14, and set the pressure reducing valve 40, and start all devices. Then, operation control: turn on the fan of the condenser 20, and start the electrolytic hydrogen production system to produce hydrogen, the hydrogen compressor 6, the one-way valve 11, and run all devices. Finally, enter the shutdown process: for example, turn off the hydrogen generation device, the fan of the condenser 20, the hydrogen compressor 6, the hydrogen power generation module, and the one-way valve 11.

[0045] In summary, the hydrogen compression device proposed in the utility model has the following advantages:

[0046] Through the arrangement of a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor, a cooling device, a pressure regulating device and a concentration monitoring device; and the hydrogen generating device is used to generate hydrogen; the hydrogen storage tank is connected to the hydrogen generating device for receiving and storing the generated hydrogen; the hydrogen compressor is connected to the hydrogen storage tank for compressing the hydrogen to a set pressure; the cooling device is used to cool the heat generated during the hydrogen generation process; the pressure regulating device is used to regulate the pressure of the hydrogen; and the concentration monitoring device is used to monitor the concentration of impurities in the hydrogen. The device can reduce the humidity in the hydrogen generation process (i.e., the humidity in the hydrogen production by electrolysis) through the cooling device, and can also detect the concentration of oxygen in real time through the oxygen concentration detection sensor in the concentration monitoring device, thereby improving the overall safety. In addition, the device can ensure the pressure safety of each component and pipeline through the pressure relief valve in the pressure regulating device, and can also monitor the inlet and outlet pressures in the device in real time through the pressure sensor in the pressure regulating device. In addition, the utility model is also designed to use nitrogen to replace the air in the hydrogen storage tank and the pipeline for the first time, or to replace the air or nitrogen in the hydrogen storage tank and the pipeline by water injection and drainage, so that hydrogen can be filled in a single replacement.

[0047] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hydrogen compression device, characterized in that: It includes a hydrogen generating device, a hydrogen storage tank, a hydrogen compressor, a cooling device, a pressure regulating device and a concentration monitoring device; The hydrogen generating device is used to generate hydrogen; the hydrogen storage tank is connected to the hydrogen generating device and is used to receive and store the generated hydrogen; the hydrogen compressor is connected to the hydrogen storage tank and is used to compress the hydrogen to a set pressure; the cooling device is used to cool and condense the heat and water vapor generated during the hydrogen generation process; the pressure regulating device is used to monitor and regulate the pressure of the hydrogen; the concentration monitoring device is used to monitor the impurity concentration in the hydrogen in real time to provide the control system with an over-oxygen concentration protection alarm shutdown; The hydrogen generating device comprises a nitrogen source input device, a hydrogen source input device, a first valve, a one-way valve, a second valve, a third valve and a fourth valve; The hydrogen storage tank includes a low-pressure hydrogen storage tank and a high-pressure hydrogen storage tank; One end of the first valve is used to connect the nitrogen source input device, and the other end is connected to one end of the cooling device; one end of the cooling device is connected to the hydrogen source input device and the pressure regulating device, and the other end is connected to the one-way valve; one end of the one-way valve away from the cooling device is connected to the input end of the low-pressure hydrogen storage tank; the pressure regulating device and the concentration monitoring device are both connected between the cooling device and the one-way valve; the output end of the low-pressure hydrogen storage tank is connected to one end of the second valve; the other end of the second valve is connected to the input end of the hydrogen compressor; the output end of the hydrogen compressor is connected to the third valve; one end of the third valve away from the hydrogen compressor is connected to the input end of the high-pressure hydrogen storage tank; the output end of the high-pressure hydrogen storage tank outputs hydrogen through a fourth valve, and the bottom outlet ends of the low-pressure hydrogen storage tank and the high-pressure hydrogen storage tank are used to be connected to a water injection device for drainage, exhaust or water injection operations; the pressure regulating device is connected to the high-pressure hydrogen storage tank.

2. The hydrogen compression device according to claim 1, characterized in that: A fifth valve is connected between the first valve and the third valve.

3. The hydrogen compression device according to claim 2, characterized in that: The outlet end of the low-pressure hydrogen storage tank is connected with a sixth valve.

4. The hydrogen compression device according to claim 2, characterized in that: The outlet end of the high-pressure hydrogen storage tank is connected to a seventh valve.

5. The hydrogen compression device according to claim 4, characterized in that: The cooling device comprises a condenser; the input end of the condenser is connected to the other end of the first valve, and the output end is connected to the one-way valve; the condenser is connected to a gas-liquid separator.

6. The hydrogen compression device according to claim 5, characterized in that: The pressure regulating device includes a first pressure relief valve, a first sensor, an eighth valve, a second sensor, a ninth valve and a second pressure relief valve; One end of the first pressure relief valve is connected to the condenser, and the other end is connected to the concentration monitoring device; the first sensor is connected to the low-pressure hydrogen storage tank and one end of the eighth valve; the second sensor is connected to the high-pressure hydrogen storage tank and one end of the ninth valve; the other end of the ninth valve is connected to the other end of the eighth valve; one end of the second pressure relief valve is connected to the high-pressure hydrogen storage tank, and the other end is connected to the concentration monitoring device.

7. The hydrogen compression device according to claim 6, characterized in that: The first sensor and the second sensor are both pressure sensors.

8. The hydrogen compression device according to claim 6, characterized in that: The concentration monitoring device includes a pressure reducing valve, an oxygen concentration detection sensor, a tenth valve and an eleventh valve; One end of the pressure reducing valve is connected between the condenser and the one-way valve, and is also connected to one end of the eleventh valve; the other end of the pressure reducing valve is connected to one end of the oxygen concentration detection sensor; the other end of the oxygen concentration detection sensor is connected to one end of the tenth valve, and the other end is connected to the eleventh valve, the first pressure relief valve and the second pressure relief valve.

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