Method for producing brush steam seal ring

A brush-type steam seal and production method technology, applied in the direction of engine sealing, leakage prevention, engine components, etc., can solve the problems of poor sealing performance, large leakage, easy vibration, etc., and achieve good sealing effect and high mechanical strength. , the effect of good safety performance

Active Publication Date: 2010-05-26
江苏鑫信润科技股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The most commonly used steam seal ring for modern steam turbines is still a comb structure, mainly composed of high-tooth sealing strips and low-tooth sealing strips. The working principle is to force the fluid to decrease its pressure gradually through tortuous ways to reduce leakage. There are contact air seals, side tooth air seals, and honeycomb air seals, etc., but there are still shortcomings such as poor sealing performance, large leakage, easy vibration of the shaft, and easy damage.

Method used

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  • Method for producing brush steam seal ring
  • Method for producing brush steam seal ring
  • Method for producing brush steam seal ring

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Embodiment Construction

[0028] Accompanying drawing non-restrictive discloses several specific embodiments of the present invention, in conjunction with accompanying drawing, production method of the present invention is further described as follows:

[0029] The brush-type steam seal ring produced by the method of the present invention is formed by connecting end to end of several sections of steam seal rings, and each section of steam seal ring is mainly composed of ring body 1, high-tooth sealing strip 2, low-tooth sealing strip 3, baffle plate 6, Composed of alloy wire layer 7 and brush body 8, its cross-sectional structure is as attached figure 1 or attached figure 2 As shown, the better method of its large-scale production mainly includes the following steps, see attached figure 1 :

[0030] 1) Spare brush body groove: the arc-shaped brush body groove 4 for installing the alloy wire brush is preset at the appropriate position of each section of the ring body 1 of the steam seal ring; the bru...

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Abstract

The invention discloses a method for producing a brush steam seal ring, which mainly comprises the following steps: preparing a brush body slot; preparing a brush body; preparing a mould; preparing a baffle plate; preparing wires; arranging the wires; welding; unloading the mould; grinding and rounding; riveting; finishing; cleaning and assembling and the like, and is a good and reasonable method which is summarized from production practice and is suitable for mass production. The method can produce the qualified brush steam seal ring having the advantages of good sealing effect, good safety performance, high mechanical strength, good consistency of product quality, no wire drop and the like.

Description

technical field [0001] The invention relates to an annular seal ring used on a steam turbine, in particular to a production method of a brush type seal ring, which belongs to the field of sealing of steam turbine generating set equipment. Background technique [0002] In the current domestic large-scale steam turbine structure, the internal seal is a seal ring, and its structure is to set a seal pair around the rotating rotor, and the seal is an adjustable seal ring. The most commonly used steam seal ring for modern steam turbines is still a comb structure, mainly composed of high-tooth sealing strips and low-tooth sealing strips. The working principle is to force the fluid to decrease its pressure gradually through tortuous ways to reduce leakage. There are contact type air seals, side tooth air seals, and honeycomb air seals, etc., but there are still shortcomings such as poor sealing performance, large leakage, easy vibration of the shaft, and easy damage. In order to ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/02F16J15/44
Inventor 周治中周惠周亮
Owner 江苏鑫信润科技股份有限公司
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