The invention discloses a hydrogen leakage ventilation system and method for a hydrogen energy aircraft, and relates to the field of hydrogen safety of hydrogen energy aircrafts. A liquid hydrogen pipeline in the system is sequentially connected with a liquid hydrogen Dewar flask, a third low-temperature stop valve, a liquid hydrogen first-stage heat exchanger, a first low-temperature stop valve, a liquid hydrogen second-stage heat exchanger, a third stop valve and an engine. The cooling liquid outflow pipeline is sequentially connected with an engine, a fourth stop valve and a liquid hydrogen secondary heat exchanger; the cooling liquid return pipeline is sequentially connected with the liquid hydrogen secondary heat exchanger, the first stop valve and the engine; an engine tail gas pipeline is sequentially connected with an engine, a fifth stop valve, a liquid hydrogen primary heat exchanger, a second low-temperature stop valve, a dryer and a tail gas buffer tank; the small-flow blowdown pipeline is sequentially connected with a tail gas buffer tank, a back pressure valve and an emptying port; and the high-flow blow-off pipeline is sequentially connected with the buffer tank, the second stop valve and the exhaust port. The device has the function of passively and actively discharging oxygen-deficient tail gas, and is respectively used for dilution blowdown when no obvious hydrogen leakage exists and when obvious hydrogen leakage occurs.
本发明公开了一种用于氢能飞机的氢泄漏通风系统及方法,涉及氢能飞机的氢安全领域。系统中的液氢管路依次连接液氢杜瓦瓶、第三低温截止阀、液氢一级换热器、第一低温截止阀、液氢二级换热器、第三截止阀和发动机;冷却液出流管路依次连接发动机、第四截止阀和液氢二级换热器;冷却液回流管路依次连接液氢二级换热器、第一截止阀和发动机;发动机尾气管路依次连接发动机、第五截止阀、液氢一级换热器、第二低温截止阀、干燥器和尾气缓冲罐;小流量吹除管路依次连接尾气缓冲罐、背压阀和排空口;大流量吹除管路依次连接缓冲罐、第二截止阀和排气口。本发明具有被动和主动排放贫氧尾气的功能,分别用于无明显氢泄漏和发生明显氢泄漏时的稀释吹除。
Hydrogen leakage ventilation system and method for hydrogen energy aircraft
一种用于氢能飞机的氢泄漏通风系统及方法
2024-08-30
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B01D SEPARATION , Trennen / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / F02K JET-PROPULSION PLANTS , Strahltriebwerke |
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