The invention relates to the technical field of liquid hydrogen supply, and discloses a liquid hydrogen supply system for a hydrogen-powered unmanned aerial vehicle, which comprises an interstage heat exchanger, a vaporizer, a gaseous hydrogen storage tank and an exhaust nozzle heat exchanger which are sequentially connected, the interstage heat exchanger is distributed between centrifugal compressor stages of the unmanned aerial vehicle, and the vaporizer is connected with the interstage heat exchanger through a circulating pipeline; the vaporizer is arranged in a countercurrent manner, the exhaust nozzle heat exchanger is arranged on an exhaust nozzle of the unmanned aerial vehicle, a heat exchange pipeline of the exhaust nozzle heat exchanger extends into the gaseous hydrogen storage tank, and a heat exchange medium in the interstage heat exchanger is subjected to phase change between stages of a gas compressor and is evaporated upwards to enter the vaporizer, so that liquid hydrogen enters the gaseous hydrogen storage tank after being vaporized into hydrogen in the vaporizer; the phase change working medium in the exhaust nozzle heat exchanger brings heat of the exhaust nozzle into the gaseous hydrogen storage tank through the heat exchange pipeline, so that hydrogen in the gaseous hydrogen storage tank is heated and finally sprayed into the combustion chamber through the pipeline to be uniformly mixed with air, and the control cost in the liquid hydrogen vaporization process in the liquid hydrogen supply system can be reduced.
本发明涉及液氢供氢技术领域,公开了一种用于氢动力无人机的液氢供氢系统,包括依次连接的级间换热器、汽化器、气态储氢罐以及尾喷管换热器,级间换热器分布在无人机的离心压气机级间,汽化器通过循环管路与级间换热器连接,汽化器逆流布置,尾喷管换热器设置在无人机的尾喷管上,尾喷管换热器的换热管路延伸入气态储氢罐内,级间换热器中的换热介质在压气机级间发生相变向上蒸发进入汽化器,使液氢在汽化器中汽化为氢气后进入气态储氢罐,尾喷管换热器中的相变工质通过换热管路将尾喷管的热量带入气态储氢罐,使气态储氢罐的氢气升温,最后通过管道喷入燃烧室和空气均匀掺混,能够降低液氢供氢系统中液氢汽化过程中的控制成本。
Liquid hydrogen supply system for hydrogen-powered unmanned aerial vehicle
一种用于氢动力无人机的液氢供氢系统
2025-02-07
Patent
Electronic Resource
Chinese
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