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Method for making labyrinth seal

A technology of labyrinth seal and manufacturing method, applied in the direction of engine seal, engine components, mechanical equipment, etc., can solve the problems of short service life of labyrinth seal, can not be too small, large leakage of sealing system, etc., to achieve low manufacturing and installation cost, Long service life and the effect of reducing leakage

Inactive Publication Date: 2007-11-14
孟金来
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of sealing performance, it is hoped that the throttling backlash can be adjusted as small as possible through installation and debugging, but due to factors such as shaft vibration, thermal expansion, processing and assembly accuracy, the throttling backlash of the existing labyrinth seals cannot be too small , which makes the installation and debugging of the existing labyrinth seal extremely complicated, and it is difficult to reach the ideal standard, which leads to a large leakage of the sealing system, thereby increasing the service life of the labyrinth seal

Method used

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  • Method for making labyrinth seal
  • Method for making labyrinth seal

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Embodiment Construction

[0028] The manufacturing method of the labyrinth seal of the present invention, as shown in Fig. 1, Fig. 2, Fig. 5, Fig. 7, comprises installing a plurality of comb teeth 2 on the base 5, or as Fig. 3, Fig. 4, Fig. 6, Fig. 11. As shown in Fig. 13, Fig. 14, Fig. 15 and Fig. 16, a plurality of comb teeth 2 are installed on the comb tooth holder 6, and the comb tooth holder 6 is fixed on the machine base 5, between adjacent comb teeth 2 An expansion cavity 4 is provided, so that the tip of each comb tooth 2 is in contact with the surface of the rotating part 1 when installed, and the tooth tip of each comb tooth 2 is respectively in contact with the rotating part 1 and / or the machine base when installed. 5 and / or the surface of the comb holder 6 preferably has an interference fit of 0.01-0.08, while the tooth tip of each comb tooth 2 and the surface of the rotating part 1 in contact with the tooth tip of the comb tooth 2 have a coefficient of friction Less than 0.15, the tooth ti...

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Abstract

A method to produce labyrinth, the procedures are as following: Install a plurality of comb (2) on the base(5) and / or the rotating parts (1), form expansive cavity (4 )between the adjacent combs(2), cling each point of the comb(2) to the rotating parts (1) and / or the surface of the base (5)respectively when installing , there're wearable material on the surfaces of point and the surface of the rotating parts (1)and / or base(5) which adhere to the point, burnish and cut point of the comb(2) into throttle backlash(3) by the rotational rotating parts (1). Since the throttle backlash comes from burnishing and cutting of the rotational rotating parts, it is much more qualified for seal, and can reduce the leakage of the sealing system. It attempts to provide us a method to produce labyrinth with low cost of production and installation, long life of labyrinth, less leakage of sealing system, also it's easy and convenient to debug.

Description

technical field [0001] The invention relates to a manufacturing method of a mechanical sealing device, in particular to a manufacturing method of a labyrinth seal. Background technique [0002] Labyrinth seals are also called comb seals, which are non-contact seals. Mainly used for sealing gas medium, it is widely used in steam turbine, gas turbine, centrifugal compressor, blower and other machines as interstage seal and shaft end seal, or front seal of other dynamic seals. The special structural form of the labyrinth seal, that is, the "honeycomb labyrinth", can not only be used in the above-mentioned rotating machinery, but also can be used as a reciprocating seal for the piston seal of an oil-free piston compressor. Because the leakage of the labyrinth seal is proportional to the size of the throttle backlash, and the throttle backlash needs to be manually installed to adjust its size. From the perspective of sealing performance, it is hoped that the throttling backlash...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/447
Inventor 孟金来
Owner 孟金来
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