Rectangular rotation resistance gate sealing structure

The utility model relates to a rectangular rotation resistance gate sealing structure, which comprises a rotor, a sealing body and rectangular rotation resistance gates, wherein the sealing body sleeves the outer surface of the rotor, and sealing teeth are arranged inside the sealing body; a plurality of rectangular rotation resistance gates are uniformly distributed on the end surface of an air inlet of the sealing body. The rectangular rotation resistance gates are arranged to play a role of guide vanes, and generate a certain resistance effect on an incoming-flow gas, and such resistance effect reduces the circumferential speed of air flow in a sealing cavity, inhibits the air flow exciting-vibration force generated by the gas in a seal, and improves the stability of the rotor. The gas in a rotary machine has a pre-rotating speed before entering the seal, and the circumferential speed can be effectively reduced after the gas flows through the rectangular rotation resistance gates 1, so that the cross stiffness of the seal is reduced, and the stability of the seal is favorably improved, and thus the rotor stability of the rotary machine is improved.