Liquid hydrogen transfer injection unloading device and method

Abstract

The invention relates to the technical field of liquid hydrogen transfer injection and unloading, and discloses a liquid hydrogen transfer injection and unloading device and method.The device comprises a liquid hydrogen tank car storage tank, a liquid hydrogen booster pump, a liquid hydrogen unloading pry and a fixed liquid hydrogen storage tank, the liquid hydrogen tank car storage tank is communicated with the liquid hydrogen booster pump, and a connecting pipeline communicated with the fixed liquid hydrogen storage tank is arranged on the liquid hydrogen unloading pry. The problems that in the prior art, investment is large, efficiency is low, and safety performance is not high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of liquid hydrogen transfer, injection and unloading, and in particular to a liquid hydrogen transfer, injection and unloading device and method. Background Art

[0002] The global clean energy industry has developed rapidly in recent years. As an important and efficient carrier form of "zero-carbon" energy - hydrogen energy, liquid hydrogen will become an effective way to ensure the large-scale application of hydrogen energy. Liquid hydrogen will also become one of the important technical routes for the development and application of domestic civilian and commercial hydrogen energy. Based on the physical and chemical properties of liquid hydrogen itself, its storage and transportation methods have many advantages over the high-pressure gaseous hydrogen storage methods currently used in large quantities in China.

[0003] Compared with the specific and independent hydrogen usage environment in aerospace, the commercial liquid hydrogen system has the characteristics of complex hydrogen usage environment and frequent system start and shutdown. It also faces problems such as large investment, low efficiency, insufficient operating experience, lack of trade measurement solutions, and imperfect safety regulations. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a liquid hydrogen transfer and unloading device and method to solve the problems of large investment, low efficiency, low safety performance, etc. in the prior art.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A liquid hydrogen transfer and unloading device comprises a liquid hydrogen tank truck storage tank, a liquid hydrogen booster pump, a liquid hydrogen unloading skid, and a fixed liquid hydrogen storage tank. The liquid hydrogen tank truck storage tank and the liquid hydrogen booster pump are connected, and the liquid hydrogen unloading skid is provided with a connecting pipe connected to the fixed liquid hydrogen storage tank.

[0007] As a preferred technical solution, it also includes a first vacuum insulation pipe, a fourth vacuum insulation pipe, a fifth vacuum insulation pipe, a first gas phase vacuum quick joint, a first liquid phase vacuum quick joint, a second gas phase vacuum quick joint, and a second liquid phase vacuum quick joint. The liquid hydrogen tank truck storage tank, the first vacuum insulation pipe, the first gas phase vacuum quick joint, and the second gas phase vacuum quick joint are connected in sequence. The liquid hydrogen booster pump, the fifth vacuum insulation pipe, the first liquid phase vacuum quick joint, and the second liquid phase vacuum quick joint are connected in sequence; wherein the first gas phase vacuum quick joint is detachably connected to the second gas phase vacuum quick joint, and the first liquid phase vacuum quick joint is detachably connected to the second liquid phase vacuum quick joint.

[0008] As a preferred technical solution, it also includes a first valve, which is connected to the first vacuum insulation pipe and the fifth vacuum insulation pipe respectively.

[0009] As a preferred technical solution, the connecting pipeline includes a first vacuum insulation hose, a sixth vacuum insulation pipe, a tenth vacuum insulation pipe, and the second gas phase vacuum quick connector, the first vacuum insulation hose, the sixth vacuum insulation pipe, the tenth vacuum insulation pipe, and the gas phase inlet of the fixed liquid hydrogen storage tank are connected in sequence.

[0010] As a preferred technical solution, the connecting pipeline includes a second valve and a twelfth vacuum insulation pipeline, and the second valve, the twelfth vacuum insulation pipeline, and the liquid phase inlet of the fixed liquid hydrogen storage tank are connected in sequence.

[0011] As a preferred technical solution, the connecting pipeline also includes a second vacuum insulated hose, a seventh vacuum insulated pipeline, a liquid hydrogen flow meter, an eighth vacuum insulated pipeline, a flow regulating valve, and a ninth vacuum insulated pipeline. The second liquid phase vacuum quick connector, the second vacuum insulated hose, the seventh vacuum insulated pipeline, the liquid hydrogen flow meter, the eighth vacuum insulated pipeline, the flow regulating valve, the ninth vacuum insulated pipeline, and the second valve are connected in sequence.

[0012] As a preferred technical solution, it also includes a hydrogen system connected to the seventh vacuum insulation pipeline through a hydrogen supply pipeline, and a hydrogen purge valve is provided on the hydrogen supply pipeline.

[0013] As a preferred technical solution, it also includes a nitrogen system connected to the seventh vacuum insulation pipeline through a nitrogen supply pipeline, and a nitrogen purge valve is provided on the nitrogen supply pipeline.

[0014] As a preferred technical solution, it also includes a vaporizer, a second vacuum insulation pipe, and a third vacuum insulation pipe. The outlet of the vaporizer is connected to the gas phase inlet of the liquid hydrogen tank truck storage tank through the second vacuum insulation pipe, and the inlet of the vaporizer is connected to the liquid phase inlet of the liquid hydrogen tank truck storage tank through the third vacuum insulation pipe.

[0015] A liquid hydrogen transfer and unloading method uses the liquid hydrogen transfer and unloading device to allow liquid hydrogen in a liquid hydrogen tanker to enter a liquid hydrogen booster pump for pressurization, and the pressurized liquid hydrogen enters a connecting pipe on a liquid hydrogen unloading skid and then enters a fixed liquid hydrogen storage tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention uses a liquid hydrogen unloading pump to unload liquid hydrogen. On the one hand, it realizes an unloading method without a vaporizer. On the other hand, it recovers the vaporized liquid hydrogen, which can effectively reduce investment and has good economic benefits.

[0018] (2) The present invention integrates liquid hydrogen transfer-storage and transportation equipment to form a safe and efficient liquid hydrogen unloading process flow, operating procedures and safety specifications suitable for commercial liquid hydrogen systems, which has great economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a liquid hydrogen transfer and unloading device according to the present invention;

[0020] Figure 2 for Figure 1 One of the partial enlarged pictures;

[0021] Figure 3 for Figure 1 The second partial enlarged picture;

[0022] Figure 4 for Figure 1 The third partial enlarged image.

[0023] Marks and their corresponding names in the attached drawings: 1. Liquid hydrogen tank truck storage tank; 2. Liquid hydrogen booster pump; 3. First gas phase vacuum quick connector; 4. First liquid phase vacuum quick connector; 5. Liquid hydrogen unloading skid; 6. Second gas phase vacuum quick connector; 7. Second liquid phase vacuum quick connector; 8. Liquid hydrogen flow meter; 9. Flow regulating valve; 10. Hydrogen purge valve; 11. Nitrogen purge valve; 12. Fixed liquid hydrogen storage tank; 13. Vaporizer; 14. First vacuum insulated pipeline; 15. Second vacuum insulated pipe duct; 16. third vacuum insulated pipe; 17. fourth vacuum insulated pipe; 18. fifth vacuum insulated pipe; 19. sixth vacuum insulated pipe; 20. seventh vacuum insulated pipe; 21. eighth vacuum insulated pipe; 22. ninth vacuum insulated pipe; 23. tenth vacuum insulated pipe; 24. eleventh vacuum insulated pipe; 25. first vacuum insulated hose; 26. second vacuum insulated hose; 27. first valve; 28. second valve; 29. ​​twelfth vacuum insulated pipe. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0025] Example 1

[0026] like Figures 1 to 4 As shown, the present invention provides a liquid hydrogen transfer and unloading device and method, which combines the physical properties of liquid hydrogen and the characteristics of the liquid hydrogen temperature zone, adopts a liquid hydrogen tank truck and an unloading pump and an unloading skid, has the characteristics of improving the liquid hydrogen transfer efficiency, recovering gasified liquid hydrogen, etc., and is suitable for the liquid hydrogen receiving field.

[0027] A device for transferring and unloading liquid hydrogen, wherein a liquid hydrogen tank truck storage tank is connected to a liquid hydrogen booster pump (preferably a liquid hydrogen submersible pump) through a vacuum insulation pipeline; the liquid hydrogen booster pump is connected to a liquid hydrogen unloading skid through a vacuum insulation soft pipeline and a vacuum insulation quick connector; the liquid hydrogen unloading skid is connected to a fixed liquid hydrogen storage tank vacuum insulation pipeline, thereby forming a hydrogen transfer and unloading system.

[0028] A device for transferring and unloading liquid hydrogen, comprising a liquid hydrogen tank truck storage tank, a liquid hydrogen vaporizer, a liquid hydrogen booster pump, a liquid hydrogen unloading skid and a fixed liquid hydrogen storage tank connected in sequence; wherein:

[0029] The liquid hydrogen outlet of the liquid hydrogen tank truck storage tank, the liquid hydrogen booster pump, the manual regulating valve downstream of the liquid hydrogen booster pump, and the vacuum insulation quick connector are connected in sequence through a vacuum insulation pipeline; the gas hydrogen outlet of the liquid hydrogen tank truck storage tank and the vacuum insulation quick connector are connected in sequence through a vacuum insulation pipeline;

[0030] The gas phase vacuum insulation quick connector, vacuum insulation hose and vacuum insulation pipeline inlet of the liquid hydrogen unloading skid are connected in sequence;

[0031] The liquid phase vacuum insulation quick connector, vacuum insulation hose and vacuum insulation pipeline inlet of the liquid hydrogen unloading skid are connected in sequence;

[0032] The liquid hydrogen vacuum insulation pipeline outlet of the liquid hydrogen unloading skid and the liquid hydrogen inlet of the fixed liquid hydrogen storage tank are connected in sequence through vacuum insulation pipelines, and the gas phase vacuum insulation pipeline outlet of the liquid hydrogen unloading skid and the liquid hydrogen gas phase outlet of the fixed liquid hydrogen storage tank are connected in sequence through vacuum insulation pipelines to form a liquid hydrogen transfer and unloading device.

[0033] Preferably, the liquid hydrogen outlet of the tank truck storage tank and the liquid hydrogen booster pump are connected via a vacuum insulated pipeline; the liquid phase outlet of the liquid hydrogen booster pump and the vacuum insulated quick connector are connected via a vacuum insulated pipeline.

[0034] Preferably, the unloading arm, vacuum insulation hose and vacuum insulation quick connector of the liquid hydrogen unloading skid are connected in sequence.

[0035] Preferably, the liquid hydrogen outlet of the liquid hydrogen unloading skid is connected to the liquid hydrogen inlet of the fixed liquid hydrogen storage tank.

[0036] Preferably, the gaseous hydrogen outlet of the liquid hydrogen unloading skid is connected to the gas phase outlet of the fixed liquid hydrogen storage tank.

[0037] Preferably, the liquid hydrogen pipelines are all vacuum insulated pipelines.

[0038] Preferably, the liquid hydrogen drawn from the liquid hydrogen tanker storage tank is pressurized to 0.4 MPa.g by a liquid hydrogen booster pump and then enters the liquid hydrogen unloading skid, and then enters the fixed liquid hydrogen storage tank and is regulated using flow control.

[0039] The present invention also provides a method for transferring and unloading liquid hydrogen, comprising the following contents:

[0040] Liquid hydrogen with a temperature of -253℃ and a concentration of 0.02 to 0.2Mpag comes from the liquid hydrogen tank truck storage tank and enters the liquid hydrogen booster pump through a vacuum insulated hose for pressurization. After pressurization, the liquid hydrogen with a concentration of 0.4Mpag enters the liquid hydrogen pipeline of the liquid hydrogen unloading skid, and after being measured by a flow meter, it enters the fixed liquid hydrogen storage tank through a vacuum insulated hose.

[0041] Example 2

[0042] like Figures 1 to 4 As shown, as a further optimization of Example 1, based on Example 1, this embodiment also includes the following technical features:

[0043] A device for transferring liquid hydrogen to a truck, such as Figure 1 As shown, it includes a liquid hydrogen tank truck storage tank 1, a liquid hydrogen booster pump 2, a liquid hydrogen unloading skid 5, a flow regulating valve 9, a fixed liquid hydrogen storage tank 12, etc.;

[0044] The liquid phase outlet of the liquid hydrogen tank truck storage tank 1 and the liquid hydrogen booster pump 2 are connected through a fourth vacuum insulation pipe 17; the liquid hydrogen booster pump 2 and the first liquid phase vacuum quick connector 4 are connected through a fifth vacuum insulation pipe 18; the gas phase outlet of the liquid hydrogen tank truck storage tank 1 and the first gas phase vacuum quick connector 3 are connected through a first vacuum insulation pipe 14; the third vacuum insulation pipe 16 connects the inlet of the vaporizer 13 (preferably an air-temperature vaporizer) and the fourth vacuum insulation pipe 17; the second vacuum insulation pipe 15 connects the outlet of the vaporizer 13 and the gas phase inlet of the liquid hydrogen tank truck storage tank 1.

[0045] The second gas phase vacuum quick connector 6, the first vacuum insulation hose 25, the sixth vacuum insulation pipe 19, and the tenth vacuum insulation pipe 23 on the liquid hydrogen unloading skid 5 are connected in sequence; the second liquid phase vacuum quick connector 7, the second vacuum insulation hose 26, the seventh vacuum insulation pipe 20, the liquid hydrogen flow meter 8, the eighth vacuum insulation pipe 21, the flow regulating valve 9, the ninth vacuum insulation pipe 22, the second valve 28, the twelfth vacuum insulation pipe 29, and the liquid phase inlet of the fixed liquid hydrogen storage tank 12 are connected in sequence. The liquid phase outlet of the fixed liquid hydrogen storage tank is connected to the components of the next process through the eleventh vacuum insulation pipe 24.

[0046] The present invention also provides a method for transferring and unloading liquid hydrogen, comprising the following contents:

[0047] The first step: connecting the first gas phase vacuum quick connector 3 at the end of the liquid hydrogen tank truck storage tank 1 and the second gas phase vacuum quick connector 6 at the end of the liquid hydrogen unloading skid 5, and connecting the first liquid phase vacuum quick connectors 4 and 7.

[0048] Step 2: Open the nitrogen purge valve 11, open the first valve 27, purge the liquid hydrogen gas-liquid phase pipeline with nitrogen (20-60°C, 50Kpa.g-300Kpa.g), and then close the nitrogen purge valve 11. Purge 3 times, 30 seconds each time;

[0049] Step 3: Open the hydrogen purge valve 10, keep the first valve 27 open, purge the liquid hydrogen gas-liquid phase pipeline with hydrogen (20-60°C, 200Kpa.g-300Kpa.g), and then close the hydrogen purge valve 10. Purge 3 times, 30 seconds each time;

[0050] Step 4: Close the first valve 27, open the second valve 28, and start precooling of liquid hydrogen unloading. Turn on the power of the liquid hydrogen booster pump 2, and the liquid hydrogen (-253°C, 0.2Mpag) from the liquid hydrogen tanker storage tank 1 enters the liquid hydrogen booster pump 2 through the fourth vacuum insulation pipe 17, and after being pressurized to 0.4Mpag, it passes through the vacuum insulation pipe 18, the first liquid phase vacuum quick connector 4, the second liquid phase vacuum quick connector 7, the seventh vacuum insulation pipe 20, the liquid hydrogen flowmeter 8, the eighth vacuum insulation pipe 21, the flow regulating valve 9, the ninth vacuum insulation pipe 22, the second valve 28, and finally injected into the fixed liquid hydrogen storage tank 12, wherein the gasified hydrogen in the liquid hydrogen during the precooling process will be discharged through the tenth vacuum insulation pipe 23 and enter the next process.

[0051] Step 5: When the precooling reaches the preset temperature of -253℃, liquid hydrogen will be transferred to the truck for unloading. According to the flow meter reading, the flow rate is adjusted to the preset flow rate of about 25m / s. 3 / h;

[0052] Step 6: After the unloading is completed, close the second valve 28 and the liquid hydrogen booster pump 2;

[0053] Step 7: After the residual liquid hydrogen in the pipeline is completely discharged and the residual gasified hydrogen is emptied, the hydrogen purge valve 10 is opened, the first valve 27 is opened, and the liquid hydrogen gas-liquid phase pipeline is purged with hydrogen (20-60°C, 200Kpa.g-300Kpa.g), and then the hydrogen purge valve 10 is closed. Purge 3 times, 30 seconds each time;

[0054] Step 8: Open the nitrogen purge valve 11, keep the first valve 27 open, purge the liquid hydrogen gas-liquid phase pipeline with nitrogen (20-60°C, 50Kpa.g-300Kpa.g), and then close the nitrogen purge valve 11. Purge three times, each time for 30 seconds, and then close the first valve 27;

[0055] In the ninth step, disconnect the first gas phase vacuum quick connector 3 at the end of the liquid hydrogen tank truck storage tank 1 and the second gas phase vacuum quick connector 6 at the end of the liquid hydrogen unloading skid 5, and disconnect the first liquid phase vacuum quick connector 4 and the second liquid phase vacuum quick connector 7. The liquid hydrogen transfer and unloading process is completed.

[0056] If the liquid hydrogen booster pump 2 fails in the above steps, the vaporizer 13 can be used to perform self-boosting operation instead.

[0057] As described above, the present invention can be preferably implemented.

[0058] All features disclosed in all embodiments in this specification, or steps in all methods or processes implicitly disclosed, except for mutually exclusive features and / or steps, can be combined and / or expanded or replaced in any manner.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A liquid hydrogen transfer and unloading device, It is characterized in that The invention comprises a liquid hydrogen tank truck storage tank (1), a liquid hydrogen booster pump (2), a liquid hydrogen unloading skid (5), and a fixed liquid hydrogen storage tank (12); the liquid hydrogen tank truck storage tank (1) and the liquid hydrogen booster pump (2) are connected, and the liquid hydrogen unloading skid (5) is provided with a connecting pipe connected to the fixed liquid hydrogen storage tank (12).

2. A liquid hydrogen transfer and unloading device according to claim 1, It is characterized in that It also includes a first vacuum insulation pipe (14), a fourth vacuum insulation pipe (17), a fifth vacuum insulation pipe (18), a first gas phase vacuum quick connector (3), a first liquid phase vacuum quick connector (4), a second gas phase vacuum quick connector (6), and a second liquid phase vacuum quick connector (7); the liquid hydrogen tank truck storage tank (1), the first vacuum insulation pipe (14), the first gas phase vacuum quick connector (3), and the second gas phase vacuum quick connector (6) are connected in sequence; the liquid hydrogen booster pump (2), the fifth vacuum insulation pipe (18), the first liquid phase vacuum quick connector (4), and the second liquid phase vacuum quick connector (7) are connected in sequence; wherein the first gas phase vacuum quick connector (3) and the second gas phase vacuum quick connector (6) are detachably connected, and the first liquid phase vacuum quick connector (4) and the second liquid phase vacuum quick connector (7) are detachably connected.

3. A liquid hydrogen transfer and unloading device according to claim 2, It is characterized in that It also includes a first valve (27), which is connected to the first vacuum insulation pipeline (14) and the fifth vacuum insulation pipeline (18) respectively.

4. A liquid hydrogen transfer and unloading device according to claim 2, It is characterized in that The connecting pipeline comprises a first vacuum insulation hose (25), a sixth vacuum insulation pipeline (19), and a tenth vacuum insulation pipeline (23); a second gas phase vacuum quick connector (6), a first vacuum insulation hose (25), a sixth vacuum insulation pipeline (19), a tenth vacuum insulation pipeline (23), and a gas phase inlet of a fixed liquid hydrogen storage tank (12) are connected in sequence.

5. A liquid hydrogen transfer and unloading device according to claim 2, It is characterized in that The connecting pipeline comprises a second valve (28) and a twelfth vacuum insulation pipeline (29), and the second valve (28), the twelfth vacuum insulation pipeline (29), and a liquid phase inlet of the fixed liquid hydrogen storage tank (12) are connected in sequence.

6. A liquid hydrogen transfer and unloading device according to claim 5, It is characterized in that The connecting pipeline also includes a second vacuum insulation hose (26), a seventh vacuum insulation pipeline (20), a liquid hydrogen flow meter (8), an eighth vacuum insulation pipeline (21), a flow regulating valve (9), and a ninth vacuum insulation pipeline (22); a second liquid phase vacuum quick connector (7), a second vacuum insulation hose (26), a seventh vacuum insulation pipeline (20), a liquid hydrogen flow meter (8), an eighth vacuum insulation pipeline (21), a flow regulating valve (9), a ninth vacuum insulation pipeline (22), and a second valve (28) are connected in sequence.

7. A liquid hydrogen transfer and unloading device according to claim 6, It is characterized in that It also includes a hydrogen system connected to the seventh vacuum insulation pipeline (20) via a hydrogen supply pipeline, and a hydrogen purge valve (10) is provided on the hydrogen supply pipeline.

8. A liquid hydrogen transfer and unloading device according to claim 6, It is characterized in that It also includes a nitrogen system connected to the seventh vacuum insulation pipeline (20) through a nitrogen supply pipeline, and a nitrogen purge valve (11) is provided on the nitrogen supply pipeline.

9. A liquid hydrogen transfer and unloading device according to any one of claims 1 to 8, It is characterized in that It also includes a vaporizer (13), a second vacuum insulation pipeline (15), and a third vacuum insulation pipeline (16); the outlet of the vaporizer (13) is connected to the gas phase inlet of the liquid hydrogen tank truck storage tank (1) through the second vacuum insulation pipeline (15); the inlet of the vaporizer (13) is connected to the liquid phase inlet of the liquid hydrogen tank truck storage tank (1) through the third vacuum insulation pipeline (16).

10. A method for transferring and unloading liquid hydrogen. It is characterized in that By using a liquid hydrogen transfer and unloading device as described in any one of claims 1 to 9, the liquid hydrogen in the liquid hydrogen tank truck storage tank (1) enters the liquid hydrogen booster pump (2) for pressurization, and the pressurized liquid hydrogen enters the connecting pipe on the liquid hydrogen unloading skid (5), and then enters the fixed liquid hydrogen storage tank (12).

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