Helicopter power cabin rear sealing structure

The invention relates to a helicopter power cabin rear sealing structure. The helicopter power cabin rear sealing structure comprises an upper partition plate (1), a lower outer partition plate (2) and a lower inner partition plate (3). The upper partition plate (1) is in screw joint with an engine exhaust pipe, the lower outer partition plate (2) and the lower inner partition plate (3). The lower outer partition plate (2) and the lower inner partition plate (3) are in screw joint with a flange plate on an engine. The lower outer partition plate (2) is in non-fixed connection with the lower inner partition plate (3). According to the helicopter power cabin rear sealing structure, a power cabin rear open area can be sealed, so that the influences of engine vibration, engine complex shapes, the exhaust pipe high temperature and the like on the sealing structure are avoided, and a ventilation interface with enough area is provided for ventilation and cooling. 本发明涉及种直升机动力舱后部封严结构，包括上部隔板(1)、下部外隔板(2)和下部内隔板(3)，上部隔板(1