Mechanical seal structure of spike-shaped distribution microporous end surface

An end-face mechanical seal, micro-hole technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of poor high-speed anti-interference ability of seals, improve anti-disturbance ability and stability, prolong service life, improve The effect of reliability

Active Publication Date: 2011-04-20
海宁市黄湾镇资产经营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the lack of poor high-speed anti-interference ability of the seal in the prior art, the present invention provides a medium that can be applied to various conditions, improves the follow-up of the microhole en

Method used

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  • Mechanical seal structure of spike-shaped distribution microporous end surface
  • Mechanical seal structure of spike-shaped distribution microporous end surface
  • Mechanical seal structure of spike-shaped distribution microporous end surface

Examples

Experimental program
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Embodiment 1

[0022] refer to Figure 1-3 , a mechanical seal structure with micropores arranged in a spike shape, including a moving ring 4 and a static ring 3 of the mechanical seal, one side of the end faces of the moving ring 4 and the static ring 3 is the high pressure side, that is, the upstream, and the moving ring 4 and the other side of the end surface of the static ring 3 is the low-pressure side, that is, the downstream side, and the end surface of the static ring 3 is formed with inclined dynamic pressure microholes 11 and non-directional decompression microholes 12 symmetrically distributed according to the center of rotation. Spike-shaped micropore group, the decompression micropore 12 is arranged at the end of the dynamic pressure micropore 11, and the spike-shaped micropore group 1 forms an annulus, and the annulus is arranged on the upstream of the end face, and the downstream of the annulus An annular sealing dam with a smooth plane is provided.

[0023] The annular zone ...

Embodiment 2

[0031] refer to Figure 4 , The difference between this embodiment and Embodiment 1 is that the annular zone is provided with a plurality of ear-shaped micropore groups 1 along a direction inclined at an angle to the radial direction. All the other structures and functions are the same as those in Embodiment 1.

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Abstract

The invention provides a mechanical seal structure of a spike-shaped distribution microporous end surface, comprising a moving ring and a static ring which are mechanically sealed, wherein the one side of the end surface of the moving ring and one side of the end surface of the static ring are high pressure sides, namely upstream; the other side of the end surface of the moving ring and the otherside of the end surface of the static ring are low pressure sides, namely downstream; at least one end surface of the moving ring or static ring is provided with a group of spike-shaped micropores which are symmetrically distributed based on a rotation center and composed of inclined hydrodynamic micropores and nondirectional decompressed micropores, wherein the decompressed micropores are arranged at the tail ends of the hydrodynamic micropores; the spike-shaped micropore group forms a ring belt which is arranged on the upstream of the end surface; and the downstream of the ring belt is provided with an annular seal dam with a smooth plane. The mechanical seal structure has the beneficial effects that seal disturbance-resistant capability and stability are improved by controlling fluid hydrodynamic effect of the microporous end surface and increasing damp; the capability and advantage that micropores can prevent solid particles can be fully performed; and the fluid hydrodynamic effect and disturbance resistivity are enhanced so that noncontact stability and wear resistivity of seal are improved, the service life is prolonged, and the reliability of the seal is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical end face sealing, and in particular relates to a shaft end sealing device suitable for rotating shafts of various compressors, pumps, kettles, etc., and in particular to a mechanical seal structure on the end face of spike-shaped arrangement of micropores. Background technique [0002] Due to the unique advantages of surface texture technology in surface friction reduction, it has been successfully applied in mechanical seals. Engineering practice shows that the anti-friction and wear resistance of surface microstructure can effectively improve the wear resistance and service life of the sealing end face. Especially in the occasions of easy vaporization and crystallization, high solid particle content or high operating parameters, microporous seals show excellent tribological properties, and the research and application of microporous seals have attracted increasing attention. [0003] Since Et...

Claims

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Application Information

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IPC IPC(8): F16J15/34
Inventor 白少先彭旭东李纪云孟祥铠盛颂恩
Owner 海宁市黄湾镇资产经营有限公司
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