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A device for improving the pressure resistance of magnetic liquid seals

A magnetic liquid, pressure-resistant technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of reducing reliability, increasing axial length, unable to seal flammable, explosive, highly corrosive gases, etc. , to save costs and avoid harm

Inactive Publication Date: 2016-12-07
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing magnetic liquid sealing device will increase the axial length and reduce the reliability while improving the pressure resistance, so that it cannot be applied in a high-pressure environment, especially it cannot be sealed in a high-pressure environment. Flammable, explosive, highly corrosive gases

Method used

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  • A device for improving the pressure resistance of magnetic liquid seals

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Embodiment Construction

[0015] The present invention will be further described with accompanying drawing as specific embodiment:

[0016] A device for improving the pressure resistance of magnetic liquid seals, such as figure 1 , the sealing device includes: shell 1, left electric control valve 2, gas storage tank 3, left pole shoe 4, permanent magnet 5, differential pressure sensor 6, right pole shoe 7, right electric control valve 8, high pressure pump 9, sealing Assembly 10, retaining ring 11, right magnetic isolation ring 12, left magnetic isolation ring 13.

[0017] Connections between the parts making up the device:

[0018] First install the left magnetic spacer ring 13 on the right end face of the inner hole of the shell 1, and ensure that the through hole a2 of the left magnetic spacer ring 13 is coaxial with the through hole a1 on the left side of the shell 1; then install the left pole piece 4 on the left spacer On the right end face of the magnetic ring 13, the permanent magnet 5 is ins...

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Abstract

The invention provides a device for improving magnetic liquid sealing pressure endurance capacity and belongs to the field of mechanical engineering sealing. The maximum pressure endurance value which can be borne by an existing magnetic liquid sealing device is greatly improved. The device comprises an outer shell (1), a left electric control valve (2), a gas storage tank (3), a left pole shoe (4), a permanent magnet (5), a differential pressure transducer (6), a right pole shoe (7), a right electric control valve (8), a high-pressure pump (9), a sealing component (10), a blocking ring (11), a right magnetism partitioning ring (12), a left magnetism partitioning ring (13) and the like. According to the magnetic liquid sealing device, the differential pressure of a pressure adjusting cavity I and a pressure adjusting cavity II is adjusted through a differential valve, and an effective scheme for sealing of inflammable, explosive and highly-corrosive gas under a high-pressure environment of an existing magnetic liquid sealing device is provided.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] The magnetic liquid sealing technology has gradually been used by more and more industries due to its advantages of zero leakage, no wear, long life and simple structure, and the zero leakage performance is difficult to achieve by other sealing forms. Typical structures of existing magnetic liquid rotary sealing devices are described in patent applications with publication numbers CN 102518811A and CN 202091519U. Although the maximum pressure resistance of the existing magnetic liquid rotary seal device can reach 7MPa, its axial length has exceeded 1m, while the unilateral gap between the magnetic liquid seal pole teeth and the rotating shaft is usually 0.1-0.3mm, when the axial length When it is too long, the beating of the rotating shaft will easily cause the pole teeth of the magnetic liquid seal to scratch against the rotating shaft, thereby making ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/43
CPCF16J15/406F16J15/43
Inventor 李德才姚杰黄串
Owner BEIJING JIAOTONG UNIV
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