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Ventilation type air cooling magnetic liquid sealing device

A magnetic liquid and sealing device technology, which is applied to the sealing of engines, engine components, mechanical equipment, etc., can solve the problems of high heat generation of magnetic liquids, shortened service life of seals, and failure, so as to improve cooling cycle efficiency and reduce conduction paths Effect

Inactive Publication Date: 2015-06-10
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is that when the existing magnetic liquid rotary sealing device works in the environment of large diameter and high linear velocity, the service life of the seal is shortened or even invalid due to the large heat generated by the magnetic liquid in the sealing gap

Method used

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  • Ventilation type air cooling magnetic liquid sealing device
  • Ventilation type air cooling magnetic liquid sealing device
  • Ventilation type air cooling magnetic liquid sealing device

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Embodiment Construction

[0028] The present invention will be further described with accompanying drawing as specific embodiment:

[0029] Vented air-cooled magnetic liquid seals, such as figure 1 , the sealing device includes: a magnetic isolation ring 1, a housing 2, a first pole piece 3, a first permanent magnet 4, a second pole piece 5, a second permanent magnet 6, a third pole piece 7, screws 8, and an end cover 9 , A shaft sleeve 10, a third rubber sealing ring 11, a ventilation joint 12, a second rubber sealing ring 13, a first rubber sealing ring 14, and a magnetic liquid 15.

[0030] Connections between the parts making up the device:

[0031] The first rubber sealing ring 14 is installed in the groove on the outer circle of the first pole shoe 3 to form the first pole shoe with a rubber sealing ring, and the second rubber sealing ring 13 is installed on the outer circle of the second pole shoe 5 In the groove on the top, a second pole piece with a rubber seal ring is formed, and the third ...

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Abstract

The invention discloses a ventilation type air cooling magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The ventilation type air cooling magnetic liquid sealing device successfully solves the problems that when the online speed of an existing magnetic liquid sealing device is larger than 20 m / s, the heating amount of magnetic liquid in a sealing gap is larger, the service life is shortened, and the magnetic liquid even fails. The ventilation type air cooling magnetic liquid sealing device comprises a shell (2), a first pole shoe (3), a first permanent magnetic body (4), a second pole shoe (5), a second permanent magnetic body (6), a third pole shoe (7), a shaft sleeve (10), a ventilation connector (12) and other parts. According to the ventilation type air cooling magnetic liquid sealing device, a cooling circulating channel for cooling air to circulate is formed among the ventilation connector (12), the shell (2), a ventilation hole in the second permanent magnetic body (6), a sealing cavity II and a shaft sleeve (10). The channel can ensure cooling of magnetic liquid under all pole teeth, conduction paths are reduced, and the cooling circulating efficiency is improved.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] Magnetic liquid seals are used in large-diameter, high-line-velocity sealing environments. The magnetic liquid in the seal gap often fails due to high temperature. Internationally, the cooling of magnetic liquid seals under large-diameter, high-line-velocity conditions has always been is a puzzle. Therefore, it is very important to improve and develop the cooling circulation device of the magnetic liquid seal, which directly affects the service life of the magnetic liquid seal device. [0003] The most widespread cooling method now has the cooling method of processing a water-cooled groove in the pole piece, as described in reference 1 (the patent publication number is CN 103574041A); there is a cooling method of installing a water jacket on the outer circumference of the pole piece, as described in the reference 2 (publication number is the patent of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/43
Inventor 李德才姚杰王忠忠
Owner BEIJING JIAOTONG UNIV
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