Radial multilayer brush wire brush type sealing structure

The invention relates to a radial multi-layer brush wire brush type sealing structure which structurally comprises an inner layer brush wire and an outer layer brush wire, the brush wires have certain interference amount, and elastic force is generated to resist the stiffening effect and the hysteresis effect caused by friction force between the brush wires and a rear baffle. A stream of gas entering the sealing gap moves along the wall surface of the stator along the wall surface of the stator after encountering blocking of the rear clamping plate, radial closing force and thrust are generated, the effect of overcoming friction between the brush wires and the rear baffle is also achieved, and the stream of gas forms a pressure chamber in the inner-layer brush wires, so that the internal and external pressure difference is reduced, and the deformation amount is reduced. And the other strand of airflow is close to the wall surface of the rotor and flows out through a gap between the rear clamping plate and the