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Stepped liquid labyrinth sealing element

A labyrinth seal and step-type technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problems of difficult to achieve precision and sealing effect, and achieve the effect of not easy to pass, strong toughness, enhanced viscosity and elasticity

Inactive Publication Date: 2017-09-12
江苏海川卓越密封材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the above-mentioned characteristics of the labyrinth seal, it is difficult to achieve the required precision and sealing effect when it requires high-precision gas sealing.

Method used

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  • Stepped liquid labyrinth sealing element

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0012] A stepped liquid labyrinth seal such as figure 1 As shown, it includes a housing 1, a rotating shaft 2, a first type ring 31, a second type ring 41, an outer seal assembly and an inner seal assembly, the inner seal assembly and the outer seal assembly are arranged in the housing 1 from the inside to the outside, and the The inner seal assembly and the outer seal assembly are located between the rotating shaft 2 and the outer casing 1; a liquid labyrinth area i...

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Abstract

The invention discloses a stepped liquid labyrinth sealing element. The stepped liquid labyrinth sealing element comprises a shell (1), a rotary shaft (2), an F-shaped ring (31), a ring (41) in the shape like the Chinese character 'gan', an outer sealing assembly and an inner sealing assembly; the inner sealing assembly and the outer sealing assembly are arranged in the shell (1) from inside to outside; and a liquid labyrinth area is defined by the shell (1), the rotary shaft (2), the outer sealing assembly and the inner sealing assembly and filled with liquid sealant, so that glue sealing is formed between a first rotary blade surface (32) and a corresponding second blade surface (42) adjacent to the first rotary blade surface (32). The stepped liquid labyrinth sealing element is simple in structure and good in sealing effect.

Description

technical field [0001] The invention relates to a labyrinth seal, in particular to a liquid labyrinth seal for shaft ends and stages of steam turbines, gas turbines, compressors, blowers, Background technique [0002] The labyrinth seal is to set a number of annular sealing teeth arranged in sequence around the rotating shaft. A series of interception gaps and expansion cavities are formed between the teeth. Purpose. Because there is a gap between the labyrinth-sealed rotor and the casing, there is no solid contact, no lubrication is required, and thermal expansion is allowed, so it is suitable for high temperature, high pressure, and high speed frequency occasions. However, due to the above-mentioned characteristics of the labyrinth seal, it is difficult to achieve the required precision and sealing effect when it requires high-precision gas sealing. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/447F16J15/40
CPCF16J15/4472F16J15/40F16J15/4476
Inventor 吴德斌
Owner 江苏海川卓越密封材料有限公司
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