Small and light cryogenic high-pressure hydrogen storage device

Abstract

The invention discloses a small and light cryogenic high-pressure hydrogen storage device. The small and light cryogenic high-pressure hydrogen storage device comprises an inner container and an outerbarrel, wherein the inner container is located in the outer barrel and wrapped by carbon fibers in a full winding mode; the outer side of a carbon fiber layer is further wrapped by a reflection heatinsulation layer; a hydrogen introducing pipe is arranged in an interlayer between the inner container and the outer barrel; one end of the hydrogen introducing pipe is communicated with the inner container from the head of the inner container; then the hydrogen introducing pipe is arranged around the inner container for a circle from the head of the inner container to the tail of the inner container and then towards the head of the inner container; then the other end of the hydrogen introducing pipe penetrates through the head of the outer barrel to be communicated with one end of a hydrogensupply pipe on the outer side of the head of the outer barrel; a first stop valve is arranged on the hydrogen supply pipe; a filling pipe is communicated to the hydrogen supply pipe between the firststop valve and the outer barrel; a second stop valve is arranged on the filling pipe; and the interlayer between the inner container and the outer barrel is further filled with aerogel and vacuumized.The device can improve the cruising ability of a small machine, and is light in weight, low in cost, safe, reliable and long in hydrogen storage maintaining time.

Description

Technical field[0001]The invention relates to the field of hydrogen storage, in particular to a small and light type cryogenic high-pressure hydrogen storage device based on cryogenic high-pressure hydrogen storage.Background technique[0002]At present, domestic small machines such as small unmanned aerial vehicles and unmanned ships are developing towards the direction of hydrogen energy power supply. Therefore, hydrogen storage power supply systems are usually set on small machines. The hydrogen storage power supply system consists of hydrogen that can provide electricity to the machine. The fuel cell is composed of a hydrogen storage device that can store hydrogen and can supply hydrogen to the hydrogen fuel cell. Existing hydrogen storage devices usually include high-pressure hydrogen storage devices, liquid hydrogen storage devices, and medium-sized cryogenic high-pressure hydrogen storage devices.[0003]Due to the limitation of hydrogen storage density, the high-pressure hydroge...

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Problems solved by technology

[0003] Due to the limitation of hydrogen storage density, the high-pressure hydrogen storage device has relatively insufficient battery life, and the quality requirements of the hydrogen storage container are very high under the high pressure of 70MP

[0004]Although the hydrogen storage density of the liquid hydrogen storage device has been greatly improved, after the liquid hydrogen storage device is miniaturized, due to the surface-to-volume ratio of the hydrogen storage container The increase makes it easier for the heat to be transferred to the hydrogen storage container, so that the evaporation rate of liquid hydrogen will be accelerated, and the flash steam generated will increase. If equipment is added to use the flash steam for power supply, the overall capacity of the liquid hydrogen storage device will be increased. In this way, the light weight of small machines will not be used; if the flash steam generated by evaporation is discharged into the air, due to the uncertainty of the external environment, it will easily cause greater risks and potential safety hazards

In addition, since liquid hydrogen is a liquid, it is subject to greater gravity constraints. During the operation of small machines, the liquid hydrogen may be far away from the outlet of the hydrogen storage container under the action of gravity, resulting in the situation that the liquid hydrogen cannot flow out. In order to ensure that the liquid hydrogen can flow out and increase booster equipment will increase equipment cost and weight

[0005]Medium-sized cryogenic and high-pressure hydrogen storage device, the inner tank of the cryogenic and high-pressure hydrogen storage bottle used for hydrogen storage in the device needs to add an air intake heat exchanger and an outer cylinder On the body, multi-layer insulation material insulation (MLI insulation) is required, and a coolant heat exchanger, secondary vacuum module, stop valve, safety valve, suspension, auxiliary system and other devices need to be integrated outside the cryogenic high-pressure hydrogen storage bottle. The structure of the device is very complicated, and the overall mass is relatively heavy. Due to its large weight and complexity, it cannot be directly reduced and transplanted to a small machine

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