CN216667259U - Vehicle-mounted liquid hydrogen bottle self-pressurization system - Google Patents
Vehicle-mounted liquid hydrogen bottle self-pressurization system Download PDFInfo
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- CN216667259U CN216667259U CN202123142878.3U CN202123142878U CN216667259U CN 216667259 U CN216667259 U CN 216667259U CN 202123142878 U CN202123142878 U CN 202123142878U CN 216667259 U CN216667259 U CN 216667259U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
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Abstract
The utility model discloses a vehicle-mounted liquid hydrogen bottle self-pressurization system.A self-pressurization liquid outlet pipe has one end hermetically penetrating through a through hole on a liquid hydrogen bottle and then extending into the liquid hydrogen bottle, and the other end is sequentially hermetically communicated with a self-pressurization vaporizer and a self-pressurization gas return pipe; the outlet of the self-pressurization gas return pipe penetrates through the distribution hole on the distribution head of the liquid hydrogen bottle in a sealing manner and then extends into the liquid hydrogen bottle; a first check valve, a first stop valve and an electric ball valve are sequentially arranged on the self-pressurization liquid outlet pipe along the direction from the inlet to the outlet of the self-pressurization liquid outlet pipe, and a second check valve, an electric pressure regulating valve and a second stop valve are sequentially arranged on the self-pressurization gas return pipe along the direction from the inlet to the outlet of the self-pressurization gas return pipe; the self-pressurized vaporizer is structured to include at least one heat exchanger, each heat exchanger structured to include: the liquid hydrogen light pipe and the spiral finned tube sleeved on the liquid hydrogen light pipe, and a refrigerant filling layer is arranged in a gap between the spiral finned tube and the liquid hydrogen light pipe. The system has the advantage of good pressurization effect.
Description
Technical Field
The utility model relates to a vehicle-mounted liquid hydrogen bottle, in particular to a self-pressurization system of the vehicle-mounted liquid hydrogen bottle.
Background
The vehicle-mounted liquid hydrogen bottle continuously provides fuel for a fuel cell on the hydrogen fuel cell automobile through the hydrogen supply system, so that the hydrogen fuel cell automobile can normally and stably run. However, as the vehicle-mounted liquid hydrogen bottle continuously outputs liquid hydrogen outwards, the liquid level in the bottle continuously decreases, the gas phase space in the bottle gradually increases, the pressure in the bottle gradually decreases, and when the pressure difference between the inside and the outside of the bottle is too small, the vehicle-mounted liquid hydrogen bottle cannot normally output liquid hydrogen outwards, so that a vehicle-mounted liquid hydrogen bottle pressurization system needs to be arranged to adjust the gas phase pressure in the bottle, maintain the stability of the gas phase pressure, and further ensure the stable supply of fuel. At present, a conventional aluminum fin vaporizer is adopted as a pressurizing vaporizer in a common vehicle-mounted liquid hydrogen bottle pressurizing system, and liquid hydrogen is directly subjected to rapid heat exchange with air through an aluminum fin due to the fact that the temperature of the liquid hydrogen is too low (the temperature of the liquid hydrogen is usually about-253 ℃), so that the surface of the aluminum fin is obviously frosted and the heat exchange effect is poor, the pressurizing effect is greatly influenced, the gas phase pressure in a vehicle-mounted liquid hydrogen bottle is insufficient, the liquid hydrogen is not supplied enough, and the normal use of a hydrogen fuel cell vehicle is influenced.
SUMMERY OF THE UTILITY MODEL
The technical problems to be solved by the utility model are as follows: the vehicle-mounted liquid hydrogen bottle self-pressurization system is simple in structure and good in pressurization effect.
In order to solve the problems, the utility model adopts the technical scheme that: the vehicle-mounted liquid hydrogen bottle self-pressurization system comprises: the inlet of the self-pressurization liquid outlet pipe penetrates through a through hole on the liquid hydrogen bottle in a sealing manner and then extends into the lower part of the inner cavity of the liquid hydrogen bottle, and the outlet of the self-pressurization liquid outlet pipe is communicated with the inlet of the self-pressurization vaporizer in a sealing manner; the outlet of the self-pressurization carburetor is hermetically communicated with the inlet of the self-pressurization air return pipe, and the outlet of the self-pressurization air return pipe penetrates through the distribution hole on the distribution head at the bottle mouth of the liquid hydrogen bottle in a sealing manner and then extends into the gas phase space in the inner cavity of the liquid hydrogen bottle; a first check valve, a first stop valve and an electric ball valve are sequentially arranged on the self-pressurization liquid outlet pipe along the direction from the inlet of the self-pressurization liquid outlet pipe to the outlet of the self-pressurization liquid outlet pipe, and a second check valve, an electric pressure regulating valve and a second stop valve are sequentially arranged on the self-pressurization gas return pipe along the direction from the inlet of the self-pressurization gas return pipe to the outlet of the self-pressurization gas return pipe; the self-pressurization vaporizer comprises at least one heat exchanger, the heat exchangers are sequentially connected in series, and the structure of each heat exchanger comprises: the liquid hydrogen light pipe is sleeved with the spiral finned tube, the liquid hydrogen light pipe is coaxial with the spiral finned tube, a gap is reserved between the inner wall of the spiral finned tube and the outer wall of the liquid hydrogen light pipe, and secondary refrigerant is filled and sealed in the gap between the inner wall of the spiral finned tube and the outer wall of the liquid hydrogen light pipe to form a secondary refrigerant filling layer.
Further, the vehicle-mounted liquid hydrogen bottle self-pressurization system is characterized in that the spiral finned tube is composed of a red copper alloy tube and spiral aluminum fins arranged on the red copper alloy tube; the inlet and outlet of the liquid hydrogen light pipe made of stainless steel pipe are extended out of the spiral fin pipe.
Further, in the vehicle-mounted liquid hydrogen bottle self-pressurization system, the secondary refrigerant in the secondary refrigerant filling layer is an LM-1HB glacier refrigerant with the working temperature of-120-50 ℃.
Further, in the vehicle-mounted self-pressurization system for the liquid hydrogen bottle, a liquid level meter for detecting the height of liquid hydrogen in an inner cavity of the liquid hydrogen bottle is further arranged on the liquid hydrogen bottle, a first pressure gauge and a temperature gauge are mounted on a self-pressurization air return pipe between the electric pressure regulating valve and the second check valve, and a second pressure gauge is mounted on the self-pressurization air return pipe between the second stop valve and an outlet of the self-pressurization air return pipe; the signal line of the electric pressure regulating valve, the signal line of the electric ball valve, the signal line of the liquid level meter, the signal line of the first pressure meter, the signal line of the second pressure meter and the signal line of the thermometer are all connected with a hydrogen controller, and the hydrogen controller can control the opening and closing of the electric ball valve and adjust the pressure difference of the inlet and the outlet of the electric pressure regulating valve according to the signals output by the first pressure meter, the second pressure meter and the liquid level meter.
Further, in the vehicle-mounted liquid hydrogen bottle self-pressurization system, a first diffusion pipeline, a second diffusion pipeline and a third diffusion pipeline are respectively arranged on the self-pressurization gas return pipe between the second stop valve and the outlet of the self-pressurization gas return pipe, and the first diffusion pipeline, the second diffusion pipeline and the third diffusion pipeline are all communicated with the centralized diffusion pipe; the first diffusion pipeline is provided with a self-pressurization safety valve, the second diffusion pipeline is provided with a first-stage safety valve, the third diffusion pipeline is provided with a second-stage safety valve, and the opening pressure of the self-pressurization safety valve is smaller than the opening pressure of the first-stage safety valve and smaller than the opening pressure of the second-stage safety valve.
The utility model has the beneficial effects that: the secondary refrigerant has the characteristics of large specific heat, high heat conductivity coefficient, strong cold carrying capacity, good antirust performance and the like, and is used as a heating medium for pressurizing and vaporizing the liquid hydrogen, so that the phenomenon that the surface of the spiral finned tube 32 is obviously frosted to influence the heat exchange effect due to the fact that the liquid hydrogen directly exchanges heat with the outside air through the spiral finned tube is avoided, and the pressurizing effect is improved; on one hand, the corrosion of the pipe wall of the spiral fin caused by the rapid vaporization of the liquid hydrogen directly through the heat exchange of the spiral fin pipe and the outside air is avoided, and the service life of the self-pressurization vaporizer is prolonged; on the other hand, the heat conductivity coefficient and the latent heat of vaporization of the secondary refrigerant are obviously larger than those of air, the supercharging speed is higher than the speed of heat exchange and supercharging of the liquid hydrogen with the outside air directly through the spiral finned tubes, the supercharging effect is further improved, and the continuous and stable supply of the liquid hydrogen is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted liquid hydrogen bottle self-pressurization system.
Fig. 2 is a schematic view of the structure of the heat exchanger.
Fig. 3 is a schematic view of the internal structure of the heat exchanger of fig. 2.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, the self-pressurization system for the vehicle-mounted liquid hydrogen bottle of the present invention includes: liquid hydrogen bottle 1 of crouching placing stretches into the lower part in the inner chamber of liquid hydrogen bottle 1 after the sealed through-hole that passes on liquid hydrogen bottle 1 of the import of pressure boost drain pipe 2, when having liquid hydrogen in liquid hydrogen bottle 1, immerses all the time in liquid hydrogen from the import of pressure boost drain pipe 2. The outlet of the self-pressurization liquid outlet pipe 2 is hermetically communicated with the inlet of the self-pressurization vaporizer 3; the outlet of the self-pressurization vaporizer 3 is communicated with the inlet of the self-pressurization air return pipe 4 in a sealing way, and the outlet of the self-pressurization air return pipe 4 penetrates through the distribution hole on the distribution head at the bottle mouth of the liquid hydrogen bottle 1 in a sealing way and then extends into the gas phase space in the inner cavity of the liquid hydrogen bottle 1. A first check valve 5, a first stop valve 6 and an electric ball valve 7 are sequentially arranged on the self-pressurization liquid outlet pipe 2 along the inlet direction of the self-pressurization liquid outlet pipe 2 to the outlet direction of the self-pressurization liquid outlet pipe 2, and a second check valve 8, an electric pressure regulating valve 9 and a second stop valve 10 are sequentially arranged on the self-pressurization gas return pipe 4 along the inlet direction of the self-pressurization gas return pipe 4 to the outlet direction of the self-pressurization gas return pipe 4. The liquid hydrogen bottle 1 is also provided with a liquid level meter 11 for detecting the height of liquid hydrogen in the inner cavity of the liquid hydrogen bottle 1, a first pressure gauge 12 and a temperature gauge 13 are arranged on the self-pressurization gas return pipe 2 between the electric pressure regulating valve 9 and the second check valve 8, and a second pressure gauge 14 is arranged on the self-pressurization gas return pipe 4 between the second check valve 10 and the outlet of the self-pressurization gas return pipe 4. The signal line of the electric pressure regulating valve 9, the signal line of the electric ball valve 7, the signal line of the liquid level meter 11, the signal line of the first pressure gauge 12, the signal line of the second pressure gauge 14 and the signal line of the temperature gauge 13 are all connected with a hydrogen controller 15, and the hydrogen controller 15 can control the opening and closing of the electric ball valve 7 and control and regulate the pressure difference of the inlet and the outlet of the electric pressure regulating valve 9 according to the signals output by the first pressure gauge 12, the second pressure gauge 14 and the liquid level meter 13.
The self-pressurization vaporizer 3 comprises at least one heat exchanger, and the heat exchangers are sequentially connected in series in sequence, as shown in fig. 2 and 3, each heat exchanger structurally comprises: the liquid hydrogen light pipe 31 is sleeved with the spiral finned tube 32, the liquid hydrogen light pipe 31 is coaxial with the spiral finned tube 32, a gap is reserved between the inner wall of the spiral finned tube 32 and the outer wall of the liquid hydrogen light pipe 31, and the secondary refrigerant is filled and sealed in the gap between the inner wall of the spiral finned tube 32 and the outer wall of the liquid hydrogen light pipe 31 to form a secondary refrigerant filling layer 33. The spiral finned tube 33 is composed of a red copper alloy tube and spiral aluminum fins arranged on the red copper alloy tube; the inlet 311 and the outlet 312 of the liquid hydrogen light pipe 31 made of stainless steel pipe extend out of the spiral finned pipe 33. The refrigerating medium in the refrigerating medium filling layer 33 adopts LM-1HB glacier refrigerating medium with the working temperature of-120 ℃ to 50 ℃.
As shown in fig. 1, one end of the liquid hydrogen pipeline 16 passes through a first distribution hole on a distribution head at the bottle mouth of the liquid hydrogen bottle 1 in a sealing manner and then extends into the inner cavity of the liquid hydrogen bottle 1, the other end of the liquid hydrogen pipeline 16 is respectively connected with a liquid adding pipeline 18 and a hydrogen supply pipeline 19 through a three-way valve 17, a hydrogenation port 20 matched with a hydrogenation gun is arranged at an end opening of the liquid adding pipeline 18, and an end opening of the hydrogen supply pipeline 19 is connected with a hydrogen supply system. A first air return pipeline 21 with a third check valve is arranged on the self-pressurization air return pipe 4 between the second stop valve 10 and the outlet of the self-pressurization air return pipe 4, and an air return port 22 matched with an air return gun is arranged at an opening at the end part of the first air return pipeline 21. The aim of hydrogenating the liquid hydrogen bottle 1 or conveying the liquid hydrogen in the liquid hydrogen bottle 1 to a hydrogen supply system is fulfilled by controlling the three-way valve 17. In the process of hydrogenating the liquid hydrogen bottle 1, gas in the inner cavity of the liquid hydrogen bottle 1 enters the gas return gun through the first gas return pipeline 21.
The self-pressurization method of the vehicle-mounted liquid hydrogen bottle self-pressurization system with the structure comprises the following steps:
when the gas phase space pressure in the inner cavity of the vehicle-mounted liquid hydrogen bottle 1 is larger than 0.9MPa and smaller than 1.6MPa, the vehicle-mounted liquid hydrogen bottle 1 is in a normal use working condition, the first stop valve 6 and the second stop valve 10 are both in a normally open state, the electric ball valve 7 is in a normally closed state, and the vehicle-mounted liquid hydrogen bottle self-pressurization system does not work.
When the pressure of the gas phase space in the inner cavity of the vehicle-mounted liquid hydrogen bottle 1 is reduced to the opening pressure of the electric ball valve 7 (the opening pressure of the electric ball valve 7 is set to be 0.9 MPa), and the liquid level in the inner cavity of the liquid hydrogen bottle 1 is higher than the lowest liquid level (the lowest liquid level is set to be five percent of the diameter of the inner cavity of the liquid hydrogen bottle), the hydrogen controller 15 controls to open the electric ball valve 7 according to signals detected by the second pressure gauge 14 and the liquid level meter 13, liquid hydrogen in the liquid hydrogen bottle 1 enters the gas phase space in the inner cavity of the liquid hydrogen bottle 1 through the self-pressurization liquid outlet pipe 2, returns to the self-pressurization vaporizer 3 through the self-pressurization gas return pipe 4 after vaporization, and the liquid hydrogen bottle works from the pressurization system. Meanwhile, the hydrogen controller 15 controls and adjusts the magnitude of the pressure difference between the inlet and the outlet of the electric pressure regulating valve 9 according to the signal detected by the first pressure gauge 12. Because the volume ratio of hydrogen gas to liquid is up to 845 times, a small amount of liquid hydrogen is gasified to bring remarkable low-pressure hydrogen, the low-pressure hydrogen is regulated by the electric pressure regulating valve 9, and when the pressure of a gas phase space in the inner cavity of the liquid hydrogen bottle 1 reaches 1.5MPa, the hydrogen controller 15 controls to close the electric ball valve 7 according to a signal detected by the second pressure gauge 14, so that the pressure stability of the gas phase space in the liquid hydrogen bottle 1 is ensured.
In order to ensure the safe use of the liquid hydrogen bottle 1, the electric ball valve 7 cannot be started even if the pressure of the gas phase space in the liquid hydrogen bottle 1 is lower than 0.9MPa at the moment when the liquid level in the liquid hydrogen bottle 1 is lower than the minimum liquid level under the control of the hydrogen controller 15.
In order to avoid the failure of the hydrogen controller 15 or the electric ball valve 7, when the pressure of the gas phase space in the liquid hydrogen bottle 1 reaches 1.5MPa or above and the electric ball valve 7 cannot be closed, the fault phenomenon of the vehicle-mounted hydrogen supply system is caused, and the three-level safety valve protection is arranged in the embodiment. As shown in fig. 1, a first diffusing pipeline 23, a second diffusing pipeline 24 and a third diffusing pipeline 25 are respectively arranged on the self-pressurizing gas return pipe 4 between the second stop valve 10 and the outlet of the self-pressurizing gas return pipe 4, and the first diffusing pipeline 23, the second diffusing pipeline 24 and the third diffusing pipeline 25 are all communicated with a centralized diffusing pipe 26; a self-pressurization safety valve 27 is installed on the first bleeding pipeline 23, a primary safety valve 28 is installed on the second bleeding pipeline 24, a secondary safety valve 29 is installed on the third bleeding pipeline 25, and the opening pressure of the self-pressurization safety valve 27 is smaller than the opening pressure of the primary safety valve 28 and smaller than the opening pressure of the secondary safety valve 29. Wherein, the opening pressure of the self-pressurization safety valve is 1.75MPa, the opening pressure of the first-stage safety valve is 1.9 MPa, and the opening pressure of the second-stage safety valve is 2.85 MPa.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.
The utility model has the advantages that: the secondary refrigerant has the characteristics of large specific heat, high heat conductivity coefficient, strong cold carrying capacity, good anti-rust performance and the like, and is used as a heating medium for pressurizing and vaporizing the liquid hydrogen, so that the heat exchange effect is prevented from being influenced by obvious frosting on the surface of the spiral finned tube 32 due to the fact that the liquid hydrogen directly exchanges heat with the outside air through the spiral finned tube 32, and the pressurizing effect is improved; on one hand, the corrosion of the tube wall of the spiral finned tube 32 caused by the rapid vaporization of the liquid hydrogen directly exchanging heat with the outside air through the spiral finned tube 32 is avoided, and the service life of the self-pressurization vaporizer is prolonged; on the other hand, the heat conductivity coefficient and the latent heat of vaporization of the secondary refrigerant are obviously larger than those of air, the supercharging speed is higher than the speed of heat exchange and supercharging of the liquid hydrogen with the outside air directly through the spiral finned tubes 32, the supercharging effect is further improved, and the continuous and stable supply of the liquid hydrogen is ensured.
Claims (6)
1. An on-board liquid hydrogen cylinder self-pressurization system, comprising: the inlet of the self-pressurization liquid outlet pipe penetrates through a through hole on the liquid hydrogen bottle in a sealing manner and then extends into the lower part of the inner cavity of the liquid hydrogen bottle, and the outlet of the self-pressurization liquid outlet pipe is communicated with the inlet of the self-pressurization vaporizer in a sealing manner; the outlet of the self-pressurization carburetor is hermetically communicated with the inlet of the self-pressurization air return pipe, and the outlet of the self-pressurization air return pipe penetrates through the distribution hole on the distribution head at the bottle mouth of the liquid hydrogen bottle in a sealing manner and then extends into the gas phase space in the inner cavity of the liquid hydrogen bottle; the method is characterized in that: a first check valve, a first stop valve and an electric ball valve are sequentially arranged on the self-pressurization liquid outlet pipe along the direction from the inlet of the self-pressurization liquid outlet pipe to the outlet of the self-pressurization liquid outlet pipe, and a second check valve, an electric pressure regulating valve and a second stop valve are sequentially arranged on the self-pressurization gas return pipe along the direction from the inlet of the self-pressurization gas return pipe to the outlet of the self-pressurization gas return pipe; the self-pressurization vaporizer comprises at least one heat exchanger, the heat exchangers are sequentially connected in series, and the structure of each heat exchanger comprises: the liquid hydrogen light pipe is sleeved with the spiral finned tube, the liquid hydrogen light pipe is coaxial with the spiral finned tube, a gap is reserved between the inner wall of the spiral finned tube and the outer wall of the liquid hydrogen light pipe, and secondary refrigerant is filled and sealed in the gap between the inner wall of the spiral finned tube and the outer wall of the liquid hydrogen light pipe to form a secondary refrigerant filling layer.
2. The vehicle-mounted liquid hydrogen bottle self-pressurization system according to claim 1, characterized in that: the spiral finned tube consists of a red copper alloy tube and a spiral aluminum fin arranged on the red copper alloy tube; the inlet and outlet of the liquid hydrogen light pipe made of stainless steel pipe are extended out of the spiral fin pipe.
3. The vehicle-mounted liquid hydrogen bottle self-pressurization system according to claim 1 or 2, characterized in that: the secondary refrigerant in the secondary refrigerant filling layer is LM-1HB glacier refrigerant with the working temperature of-120-50 ℃.
4. The vehicle-mounted liquid hydrogen bottle self-pressurization system according to claim 1 or 2, characterized in that: the liquid hydrogen bottle is also provided with a liquid level meter for detecting the height of liquid hydrogen in the inner cavity of the liquid hydrogen bottle, a first pressure gauge and a thermometer are arranged on a self-pressurization air return pipe between the electric pressure regulating valve and the second check valve, and a second pressure gauge is arranged on the self-pressurization air return pipe between the second stop valve and the outlet of the self-pressurization air return pipe; the signal line of the electric pressure regulating valve, the signal line of the electric ball valve, the signal line of the liquid level meter, the signal line of the first pressure meter, the signal line of the second pressure meter and the signal line of the thermometer are all connected with the hydrogen controller, and the hydrogen controller can control the opening and closing of the electric ball valve and adjust the pressure difference of the inlet and the outlet of the electric pressure regulating valve according to the signals output by the first pressure meter, the second pressure meter and the liquid level meter.
5. The vehicle-mounted liquid hydrogen bottle self-pressurization system according to claim 1, characterized in that: a first diffusion pipeline, a second diffusion pipeline and a third diffusion pipeline are respectively arranged on the self-pressurization gas return pipe between the second stop valve and the outlet of the self-pressurization gas return pipe, and the first diffusion pipeline, the second diffusion pipeline and the third diffusion pipeline are all communicated with the centralized diffusion pipe; the first diffusion pipeline is provided with a self-pressurization safety valve, the second diffusion pipeline is provided with a first-stage safety valve, the third diffusion pipeline is provided with a second-stage safety valve, and the opening pressure of the self-pressurization safety valve is smaller than the opening pressure of the first-stage safety valve and smaller than the opening pressure of the second-stage safety valve.
6. The vehicle-mounted liquid hydrogen bottle self-pressurization system according to claim 4, characterized in that: a first diffusion pipeline, a second diffusion pipeline and a third diffusion pipeline are respectively arranged on the self-pressurization gas return pipe between the second stop valve and the outlet of the self-pressurization gas return pipe, and the first diffusion pipeline, the second diffusion pipeline and the third diffusion pipeline are all communicated with the centralized diffusion pipe; the first diffusion pipeline is provided with a self-pressurization safety valve, the second diffusion pipeline is provided with a first-stage safety valve, the third diffusion pipeline is provided with a second-stage safety valve, and the opening pressure of the self-pressurization safety valve is smaller than the opening pressure of the first-stage safety valve and smaller than the opening pressure of the second-stage safety valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123142878.3U CN216667259U (en) | 2021-12-15 | 2021-12-15 | Vehicle-mounted liquid hydrogen bottle self-pressurization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123142878.3U CN216667259U (en) | 2021-12-15 | 2021-12-15 | Vehicle-mounted liquid hydrogen bottle self-pressurization system |
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| CN216667259U true CN216667259U (en) | 2022-06-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877251A (en) * | 2022-06-09 | 2022-08-09 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen fuel tank pipeline system for liquid hydrogen ship |
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2021
- 2021-12-15 CN CN202123142878.3U patent/CN216667259U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877251A (en) * | 2022-06-09 | 2022-08-09 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen fuel tank pipeline system for liquid hydrogen ship |
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