Magnet-containing brush-type sealing structure capable of adjusting radial clearance between brush wire beams and rotor surface

Abstract

The invention discloses a magnet-containing brush-type sealing structure capable of adjusting the radial clearance between brush wire beams and a rotor surface. The brush-type sealing structure comprises a stator, a brush-type sealing component and tile-shaped magnets, wherein the brush-type sealing component is arranged on the inner circumference of the stator in a matching manner, is capable ofmoving on the inner side of the stator in the radial direction of a rotor, and comprises an upper brush-type sealing component and a lower brush-type sealing component; both the upper brush-type sealing component and the lower brush-type sealing component comprise front baffle plates, fusion welding zones, rear baffle plates and the brush wire beams; bolts are correspondingly fixed at the middlesof the outer circumferences of the upper brush-type sealing component and the lower brush-type sealing component; after penetrating through the through holes, matched with the bolts, of the stator, the bolts are screwed by nuts; the tile-shaped magnets are arranged in pairs and mutually repelled; and each pair of the tile-shaped magnets comprises the tile-shaped magnet fixed on the outer circumference of the brush-type sealing component and that fixed on the inner circumference of the stator. The brush-type sealing structure has the beneficial effects that the radial clearance between the brush wire beams and the rotor surface can be adjusted by loosening or tightening the nuts; and through the uniformly-distributed tile-shaped magnets, the smooth rotation of the rotor can be guaranteed.

Description

technical field [0001] The invention relates to a sealing structure applied to a rotating machine, and in particular provides a brush-type sealing structure which contains a magnet and can adjust the radial gap between a brush wire bundle and a rotor surface. Background technique [0002] Brush seals are key components of rotating machinery such as aero-engines, steam turbines, and compressors. Compared with the traditional labyrinth seal, the brush seal not only has better sealing characteristics, but also can adapt to the instantaneous radial deformation or eccentric movement of the rotor. In addition, the brush wire of the brush seal forms a flexible contact with the rotor, which can improve the rotor system. The vibration characteristics ensure the safety of unit operation, so brush seals are widely used in rotating machinery in aerospace, electric power, petrochemical and other industries. [0003] The brush seal is composed of a front panel, a rear panel and a brush b...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a brush seal structure with a magnet that can adjust the radial gap between the brush filament bundle and the rotor surface, so as to solve the problem that the gap between the brush filament bundle and the rotor surface cannot be adjusted in the existing brush seal structure. question

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