CN218661549U - Tank body evaporation hydrogen recycling system in hydrogen fuel cell liquid hydrogen transportation tank car - Google Patents
Tank body evaporation hydrogen recycling system in hydrogen fuel cell liquid hydrogen transportation tank car Download PDFInfo
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- CN218661549U CN218661549U CN202222989848.4U CN202222989848U CN218661549U CN 218661549 U CN218661549 U CN 218661549U CN 202222989848 U CN202222989848 U CN 202222989848U CN 218661549 U CN218661549 U CN 218661549U
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Abstract
The utility model discloses a jar body evaporation hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon, which comprises a tank body, tank structure includes: the inner container is used for storing liquid hydrogen, an exhaust port is arranged on the side wall of the upper part of the inner container, an outer cylinder body is sleeved outside the inner container, a vacuum interlayer is formed by vacuumizing between the inner container and the outer cylinder body, a metal cold screen sleeved outside the inner container is arranged in the vacuum interlayer, a cooling tube panel consisting of cooling tubes is attached to the inner surface of the metal cold screen, the cooling tube panel is provided with an inlet and an outlet, and the inlet of the cooling tube panel is communicated with the exhaust port of the inner container; the outlet of the cooling tube panel in the tank body is communicated with one end of a connecting pipeline, and the other end of the connecting pipeline is sequentially communicated with the inlet of a hydrogen vaporizer of the fuel hydrogen supply system after passing through the metal cold panel and the outer cylinder in a sealing manner. The utility model has the advantages of reducing gas loss in the liquid hydrogen conveying process.
Description
Technical Field
The utility model relates to a hydrogen fuel cell liquid hydrogen transportation tank wagon technical field, the jar body evaporation hydrogen recycle system in the concretely relates to hydrogen fuel cell liquid hydrogen transportation tank wagon.
Background
The liquid hydrogen transport tank car for the hydrogen fuel cell comprises: the hydrogen-supplying device comprises a vehicle body, a tank body which is arranged on the vehicle body and used for loading liquid hydrogen, a hydrogen fuel cell for providing power for the vehicle body, and a fuel hydrogen supplying system for supplying hydrogen for the hydrogen fuel cell, wherein the fuel hydrogen supplying system comprises a vehicle-mounted liquid hydrogen bottle, a hydrogen vaporizer and a hydrogen buffer tank. At present, the tank structure of liquid hydrogen transportation tank car includes: the inner container is used for storing liquid hydrogen, the outer cylinder body is sleeved outside the inner container, and a vacuum interlayer is formed between the inner container and the outer cylinder body in a vacuumizing mode. Because the temperature of the liquid hydrogen loaded in the inner container is-253 ℃, the outside of the outer cylinder body is the atmospheric environment temperature, and the temperature difference of about 273 ℃ exists between the outer cylinder body and the inner container, the heat of the external environment can be inevitably transmitted to the inner container through the outer cylinder body in the modes of heat radiation, conduction, convection and the like; when external heat is transferred to the inner container through the outer cylinder, a small amount of liquid hydrogen in the inner container absorbs heat and evaporates into low-temperature hydrogen, and the vaporized low-temperature hydrogen can only be exhausted. Not only does this operation result in a waste of hydrogen, but the direct evacuation operation during transport also presents a safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon that can reduce gas loss in the liquid hydrogen transportation.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the tank body evaporation hydrogen recycling system in the hydrogen fuel cell liquid hydrogen transportation tank car comprises a tank body, wherein the tank body structure comprises: the inner container is used for storing liquid hydrogen, an exhaust port is arranged on the side wall of the upper part of the inner container, an outer cylinder body is sleeved outside the inner container, a vacuum interlayer is formed by vacuumizing between the inner container and the outer cylinder body, a metal cold screen sleeved outside the inner container is arranged in the vacuum interlayer, a cooling tube panel consisting of cooling tubes is attached to the inner surface of the metal cold screen, the cooling tube panel is provided with an inlet and an outlet, and the inlet of the cooling tube panel is communicated with the exhaust port of the inner container; the outlet of the cooling tube panel in the tank body is communicated with one end of a connecting pipeline, and the other end of the connecting pipeline is sequentially communicated with the inlet of a hydrogen vaporizer of the fuel hydrogen supply system after passing through the metal cold panel and the outer cylinder in a sealing manner.
Further, the aforesaid can body evaporation hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon, wherein: the connecting pipeline is provided with a pressure reducing and regulating valve.
Further, the aforesaid can body evaporation hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon, wherein: the connecting pipeline is provided with a steam discharge valve and a one-way valve, and the steam discharge valve, the pressure reducing and regulating valve and the one-way valve are sequentially arranged on the connecting pipeline along the conveying direction of the low-temperature hydrogen from the cooling tube panel to the hydrogen vaporizer.
Further, the aforesaid can body evaporation hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon, wherein: the cooling tube panel is composed of a spiral cooling tube spirally coiled outside the inner container along the axial direction of the inner container.
Further, the aforesaid can body evaporation hydrogen recycle system in hydrogen fuel cell liquid hydrogen transportation tank wagon, wherein: the exhaust port of the inner container is positioned on the upper side wall of the front side of the inner container, the inlet of the cooling tube panel is positioned on the front side of the inner container, and the outlet of the cooling tube panel is positioned on the rear side of the inner container.
Through the implementation of the above technical scheme, the beneficial effects of the utility model are that: (1) The low-temperature hydrogen absorbed and evaporated by the inner container in the tank body is communicated with the cooling tube panel, and the cooling tube panel is utilized to reduce the temperature of the vacuum interlayer of the tank body, and simultaneously, the metal cold screen is utilized to reduce the temperature, so that the metal cold screen forms a layer of heat-insulating barrier outside the inner container in the tank body of the liquid hydrogen transport tank car, the heat input of external heat to liquid hydrogen in the inner container is obviously reduced, and the gas loss of the liquid hydrogen transport tank car in the transport process is further reduced; (2) The low-temperature hydrogen evaporated by the container in the tank body of the liquid hydrogen transportation tank car is introduced into the fuel hydrogen supply system, so that the emission of the hydrogen is prevented, the hydrogen emission risk is reduced, and the overall safety and the cruising ability of the liquid hydrogen transportation tank car are improved.
Drawings
Fig. 1 is a schematic diagram of the structural principle of a tank evaporation hydrogen recycling system in a hydrogen fuel cell liquid hydrogen transportation tank car of the present invention.
Fig. 2 is a schematic structural diagram of a tank body of a liquid hydrogen transport tank car for a hydrogen fuel cell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, the system for recycling vaporized hydrogen from a tank in a liquid hydrogen transport tank car for a hydrogen fuel cell comprises a tank, and the tank structure comprises: the liquid hydrogen storage device comprises an inner container 1 for storing liquid hydrogen, wherein an exhaust port 2 is arranged on the side wall of the upper part of the inner container 1, an outer cylinder 3 is sleeved outside the inner container 1, a vacuum interlayer 4 is formed between the inner container 1 and the outer cylinder 3 through vacuum pumping, a metal cold screen 5 sleeved outside the inner container 1 is arranged in the vacuum interlayer 4, the metal cold screen 5 is made of metal materials, a layer of cooling tube screen 6 consisting of cooling tubes is attached to the inner surface of the metal cold screen 5, the cooling tube screen 6 is provided with an inlet and an outlet, and the inlet of the cooling tube screen 6 is communicated with the exhaust port 2 of the inner container 1; an outlet of a cooling tube panel 6 in the tank body is communicated with one end of a connecting pipeline 7, and the other end of the connecting pipeline 7 is sequentially sealed, penetrates through the metal cold screen 5 and the outer cylinder 3 and is communicated with an inlet of a hydrogen vaporizer 9 of a fuel hydrogen supply system 8; in the embodiment, the connecting pipeline 7 is provided with the pressure reducing and regulating valve 10, and the temperature and the pressure of the transport medium of the liquid hydrogen tank car can be better controlled through the arrangement of the pressure reducing and regulating valve 10, so that the supercooling degree of the liquid hydrogen temperature is ensured; in the present embodiment, the connecting line 7 is provided with a steam discharge valve 11 and a check valve 12, and the check valve 12 allows only the low-temperature hydrogen gas in the connecting line 7 to flow from the cooling tube panel 6 to the hydrogen vaporizer 9; the steam discharge valve 11, the pressure reducing and regulating valve 10 and the one-way valve 12 are sequentially arranged on the connecting pipeline 7 along the conveying direction of low-temperature hydrogen from the cooling tube panel 6 to the hydrogen vaporizer 9, so that the use safety of the liquid hydrogen transport tank car can be improved; in the present embodiment, the cooling tube panel 6 is composed of a spiral cooling tube spirally wound around the outside of the inner container 1 in the axial direction of the inner container; in the embodiment, the exhaust port 2 of the inner container 1 is positioned on the upper side wall of the front side of the inner container 1, the inlet of the cooling tube panel 6 is positioned on the front side of the inner container 1, and the outlet of the cooling tube panel 6 is positioned on the rear side of the inner container 1, so that the tank body is convenient to manufacture;
in the process of transporting liquid hydrogen by the liquid hydrogen transport tank car, when heat of the external environment is transferred to the inner container 1 through modes of heat radiation, conduction, convection and the like, a small amount of liquid hydrogen in the inner container 1 absorbs heat and then is evaporated into low-temperature hydrogen, the low-temperature hydrogen enters the cooling tube panel 6 from the exhaust port 2 and then enters the connecting pipeline 7 from the cooling tube panel 6, then enters the hydrogen vaporizer 9 of the fuel hydrogen supply system 8 through the steam exhaust valve 11, the pressure reduction and regulation valve 10 and the one-way valve 12 on the connecting pipeline 7, and in the process of flowing through the cooling tube panel 6, the low-temperature hydrogen lowers the metal cold screen 5 through the cooling tube panel 6, so that the metal cold screen 5 forms a layer of heat insulation barrier outside the container 1 in the tank body of the liquid hydrogen transport tank car, the heat input of the liquid hydrogen in the inner container is obviously reduced, and further the gas loss of the liquid hydrogen transport tank car in the transport process is reduced; the hydrogen entering the hydrogen vaporizer 9 of the fuel hydrogen supply system 8 enters the hydrogen buffer tank 13 after being processed to reach normal temperature, and finally enters the fuel cell stack 14 to provide power for the liquid hydrogen transport tank car.
The utility model has the advantages that: (1) The low-temperature hydrogen absorbed and evaporated by the container in the tank body is communicated with the cooling tube panel, and the metal cold screen is cooled by the cooling tube panel while the temperature of a vacuum interlayer of the tank body is reduced by the cooling tube panel, so that the metal cold screen forms a layer of heat insulation barrier outside the container in the tank body of the liquid hydrogen transport tank car, the heat input of external heat to liquid hydrogen in the container is obviously reduced, and the gas loss of the liquid hydrogen transport tank car in the transport process is further reduced; (2) The low-temperature hydrogen evaporated by the container in the tank body of the liquid hydrogen transportation tank car is introduced into the fuel hydrogen supply system, so that the emission of the hydrogen is prevented, the hydrogen emission risk is reduced, and the overall safety and the cruising ability of the liquid hydrogen transportation tank car are improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
Claims (5)
1. The tank body evaporation hydrogen recycling system in the hydrogen fuel cell liquid hydrogen transportation tank car is characterized in that: including a jar body, tank structure includes: the inner container is used for storing liquid hydrogen, an exhaust port is arranged on the side wall of the upper part of the inner container, an outer cylinder body is sleeved outside the inner container, a vacuum interlayer is formed by vacuumizing between the inner container and the outer cylinder body, a metal cold screen sleeved outside the inner container is arranged in the vacuum interlayer, a cooling tube panel consisting of cooling tubes is attached to the inner surface of the metal cold screen, the cooling tube panel is provided with an inlet and an outlet, and the inlet of the cooling tube panel is communicated with the exhaust port of the inner container; the outlet of the cooling tube panel in the tank body is communicated with one end of a connecting pipeline, and the other end of the connecting pipeline is sequentially communicated with the inlet of a hydrogen vaporizer of the fuel hydrogen supply system after passing through the metal cold panel and the outer cylinder in a sealing manner.
2. The system for recycling tank evaporation hydrogen in a hydrogen fuel cell liquid hydrogen transportation tank car according to claim 1, characterized in that: the connecting pipeline is provided with a pressure reducing and regulating valve.
3. The system for recycling vaporized hydrogen from a tank in a transport tank car for liquid hydrogen for hydrogen fuel cells according to claim 2, wherein: the connecting pipeline is provided with a steam discharge valve and a one-way valve, and the steam discharge valve, the pressure reducing and regulating valve and the one-way valve are sequentially arranged on the connecting pipeline along the conveying direction of the low-temperature hydrogen from the cooling pipe panel to the hydrogen vaporizer.
4. The system for recycling vaporized hydrogen from a tank in a transport tank car for liquid hydrogen for a hydrogen fuel cell according to claim 1, 2 or 3, characterized in that: the cooling tube panel is composed of a spiral cooling tube spirally coiled outside the inner container along the axial direction of the inner container.
5. The system for recycling vaporized hydrogen from a tank in a transport tank car for liquid hydrogen for hydrogen fuel cells according to claim 4, wherein: the exhaust port of the inner container is positioned on the upper side wall of the front side of the inner container, the inlet of the cooling tube panel is positioned on the front side of the inner container, and the outlet of the cooling tube panel is positioned on the rear side of the inner container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222989848.4U CN218661549U (en) | 2022-11-10 | 2022-11-10 | Tank body evaporation hydrogen recycling system in hydrogen fuel cell liquid hydrogen transportation tank car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222989848.4U CN218661549U (en) | 2022-11-10 | 2022-11-10 | Tank body evaporation hydrogen recycling system in hydrogen fuel cell liquid hydrogen transportation tank car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218661549U true CN218661549U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222989848.4U Active CN218661549U (en) | 2022-11-10 | 2022-11-10 | Tank body evaporation hydrogen recycling system in hydrogen fuel cell liquid hydrogen transportation tank car |
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|---|---|
| CN (1) | CN218661549U (en) |
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2022
- 2022-11-10 CN CN202222989848.4U patent/CN218661549U/en active Active
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