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Self-centering floating brush type sealing tile

A technology of sealing tiles and floating brushes, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of continuous decline, hydrogen leakage and purity, so as to promote the formation of oil film, improve economy and safety, and prolong The effect of longevity

Inactive Publication Date: 2012-02-15
JIANGSU TURBINE SEAL HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, a stable oil flow can realize the complete sealing of hydrogen in the machine, but in engineering practice, there are still phenomena of hydrogen leakage and decreasing purity. The main reason is that the gas dissolves into the sealing oil, and the sealing oil is used as the medium to achieve interchange

Method used

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  • Self-centering floating brush type sealing tile
  • Self-centering floating brush type sealing tile
  • Self-centering floating brush type sealing tile

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Embodiment Construction

[0032] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0033] figure 1 It is a schematic diagram of an assembly structure of an embodiment of the present invention; figure 2 It is a structural schematic diagram of the sealing tile of the present invention.

[0034] Such as figure 1 and figure 2 Shown: self-centering floating brush type sealing tile, including upper half sealing tile and lower half sealing tile, said upper half sealing tile and lower half sealing tile are fastened by bolts at the middle parting surface, said sealing tile 5 The inner surface of the inner surface is a tungsten gold surface 6, wherein, the inner surface of the sealing tile 5 is depressed to form a groove K7 for installing a brush ring, and a brush ring 12 is arranged in the groove K7 for installing a brush ring, so The above-mentioned brush ring 12 is in zero clearance or interference fit with the journal o...

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Abstract

The invention discloses a self-centering floating brush type sealing tile, comprising an upper half sealing tile and a lower half sealing tile, wherein the upper half sealing tile and the lower half sealing tile are fastened by bolts at a central parting surface; and the inner surfaces of the sealing tiles are tungsten and gold surfaces. The self-centering floating brush type sealing tile is characterized in that the inner surfaces of the sealing tiles are concave to form a groove for arranging a brush ring; the groove for arranging the brush ring is internally provided with the brush ring; and the brush ring is in zero-gap or interference-fit match with a generator rotor. In the self-centering floating brush type sealing tile, a more ideal solution is provided for sealing the end part of a hydrogen-cooling generator, so that compared with the existing common sealing tiles, the sealing performance is greatly improved, the hydrogen leakage and the hydrogen pollution can be effectively reduced, simultaneously the faults such as jamming and eccentric wearing and the like of the sealing tile are reduced, the service life is prolonged and the economy and the safety of operation of a hydrogen-cooling generator set are improved.

Description

technical field [0001] The invention relates to a brush seal, in particular to a brush seal used for sealing the end of a hydrogen-cooled generator, and belongs to the technical field of brush seals. Background technique [0002] Due to the large heat capacity of hydrogen, its thermal conductivity is more than 6 times higher than that of air, its fluidity is better than that of air, and its weight is less than 1 / 10 of that of air, which greatly reduces the ventilation friction loss in the generator, so modern single-unit large-capacity generators are common Using hydrogen cooling technology. In order to make the unit operate safely, reliably, economically and stably, it is very necessary to strictly ensure that the hydrogen inside the unit does not leak and has high purity. Unqualified hydrogen purity will cause local overheating of the internal components of the machine, and the existence of harmful gases will also cause insulation aging, corrosion of the iron core and its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/26F16J15/28
Inventor 顾新民蒋国石伟伟
Owner JIANGSU TURBINE SEAL HIGH TECH
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