Sealing device for ultra-high-speed turbine rotor

Abstract

The invention discloses a sealing device for an ultra-high-speed turbine rotor, which comprises a flexible compensation assembly and a rotating assembly, and the rotating assembly and the flexible compensation assembly are coaxially arranged; the flexible compensation assembly comprises a thrust seat, a thrust ring, a plurality of springs and a sealing compensation ring; the rotating assembly comprises a sealing rotating ring, and the sealing rotating ring and a turbine rotor bearing bush are integrated. The compensation thrust seat comprises an annular mounting groove, and the springs are arranged in the annular mounting groove at intervals; the tail end of the spring abuts against the thrust ring. The sealing compensation ring comprises a first end face facing the thrust ring, and the first end face makes contact with the thrust ring. The sealing rotating ring comprises a second end face facing the sealing compensation ring, and the second end face abuts against the sealing compensation ring and makes flexible contact with the sealing compensation ring. Compact installation can be achieved, related sealing parts are in flexible sealing contact, automatic regulation and compensation can be achieved, and high-reliability and zero-leakage operation is achieved.

Description

technical field [0001] The invention relates to the technical field of aerospace ultra-high-speed sealing, in particular to a sealing structure that can be used for ultra-high-speed (≥60000 r / min) turbine rotor power propulsion devices. Background technique [0002] Hypersonic vehicle is a new type of next-generation aviation / spacecraft powered by air-breathing or combined engine and flying at hypersonic speed (Ma>5). Hypersonic aircraft can be used in many fields such as military, civil aviation, and round-trip between space and earth, representing an important development direction in the field of aircraft in the future. When flying in the atmosphere, hypersonic vehicles usually use a combined cycle power system dominated by scramjets, such as a turbine-based combined cycle propulsion system, so as to take advantage of the high specific impulse of air-breathing engines as much as possible. [0003] But the problem is that the above technology has at least the following...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and defects of the existing technology, a method is provided that can effectively solve the problems that the acoustic emission signal generated by the mechanical seal is chaotic, unstable, and contains a lot of noise during the start-stop phase, and can effectively solve the problem that the acoustic emission signal of the mechanical seal is difficult. The bottleneck of noise reduction

Images