A helicopter engine air inlet sand discharging device capable of preventing axial flow fan blades from being abraded comprises a sand and dust separating device and a sand and dust discharging device. The sand-dust separating device comprises a panel assembly and a vortex tube separator, a sand collecting box and an air collecting box are formed through the panel assembly, the vortex tube separator is arranged in the sand collecting box, the sand collecting box is provided with an air inlet hole and an air outlet hole, a tube body of the vortex tube separator is provided with a sand discharging channel communicated with the sand collecting box, and sand-containing air is led into the vortex tube separator through the air inlet hole. Clean air is introduced into the air collection tank through the exhaust hole; the sand dust discharging device comprises an ejection sand discharging pipe, an air entraining pipeline, an axial flow fan, a main air outlet pipe and a cyclone separator, the ejection sand discharging pipe is communicated with the sand collecting box, a bypass opening is formed in the side face of the ejection sand discharging pipe and communicated with the air collecting box through the air entraining pipeline, the axial flow fan is installed in the air entraining pipeline, and the cyclone separator is arranged between the axial flow fan and the air collecting box; a main gas outlet is formed in the gas collection tank. Abrasion of sand grains to the fan can be avoided, and the sand discharging efficiency is improved.
一种轴流风扇叶片防磨损的直升机发动机进气口排砂装置,包括砂尘分离装置和砂尘排出装置;砂尘分离装置包括面板组件和涡旋管分离器,通过面板组件形成集砂箱与集气箱,涡旋管分离器布置在集砂箱内,集砂箱上开设有进气孔与排气孔,涡旋管分离器的管身设置有连通集砂箱的排砂通道,含砂空气由进气孔通入涡旋管分离器,洁净空气由排气孔通入集气箱;砂尘排出装置包括引射排砂管、引气管路、轴流风机、主出气管及旋风分离器,引射排砂管与集砂箱连通,引射排砂管的侧面开设旁通口并通过引气管路与集气箱连通,轴流风扇安装在引气管路中,轴流风扇与集气箱之间设置旋风分离器,集气箱上开设主出气口。本发明能够避免砂粒对风扇的磨损,提高排砂效率。
Helicopter engine air inlet sand discharging device capable of preventing axial flow fan blades from being abraded
一种轴流风扇叶片防磨损的直升机发动机进气口排砂装置
2022-12-20
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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