Magnetic liquid rotating sealing device suitable for space station

A magnetic liquid, rotary sealing technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of affecting the sealing performance, unsuitable magnetic liquid sealing devices, changes in the physical properties of magnetic liquids, etc., to achieve the effect of ensuring performance

Inactive Publication Date: 2013-10-09
BEIJING JIAOTONG UNIV
View PDF6 Cites 11 Cited by
  • 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 is not suitable for use on a space station in a space environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic liquid rotating sealing device suitable for space station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described with accompanying drawing as specific embodiment:

[0024] Magnetic fluid rotary seals for space stations, such as figure 1 , the sealing device includes: housing 1, first rubber sealing ring 2, second rubber sealing ring 3, right pole shoe 4, magnetic isolation ring 5, second bearing 6, screw 7, end cover 8, first bearing 9, Annular permanent magnet 10, left pole piece 11, annular cavity 12, shaft 13.

[0025] Connections between the parts making up the device:

[0026] In this device, the first rubber sealing ring 2 is embedded in the concave groove on the outer circumference of the left pole shoe 11 , and the second rubber sealing ring 3 is embedded in the concave groove on the outer circumference of the right pole shoe 4 .

[0027] The left pole shoe 11 and the annular permanent magnet 10 are loaded into the casing 1 in sequence.

[0028] Install the first bearing 9 into the inner hole of the annular permanent magne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a magnetic liquid rotating sealing device suitable for a space station, and belongs to the field of mechanical engineering sealing. The magnetic liquid rotating sealing device suitable for the space station solves the problem that the prior magnetic liquid sealing device is not suitable for being used in space stations under the space environment, the complex space temperature environment can lead to changes of physical properties of magnetic liquid, and therefore sealing performance is affected; furthermore, space where the space stations can be installed is limited, the prior sealing devices are too large, and accordingly installing is affected. According to the device, a left pole shoe annular permanent magnet is arranged in a shell; a first bearing is arranged in an inner hole of the annular permanent magnet; a right pole shoe is arranged, and the magnetic liquid is filled into pole teeth of the right pole shoe; a magnetism insulating ring and a second bearing are sequentially arranged, and an end cover is fixed on the shell through a screw; a shaft is arranged in an inner hole formed after assembling of the left pole shoe, the first bearing, the right pole shoe, the magnetism insulating ring and the second bearing. The magnetic liquid rotating sealing device suitable for the space station can ensure that the magnetic liquid in the device operates under a temperature within an optimum temperature range all the time and guarantees sealing performance, and the axial-direction dimension of the device is reduced.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] Magnetic liquid is a new type of functional material that combines the response characteristics of magnetic materials to magnetic fields and the fluidity of liquids. Magnetic fluid is widely used in the field of sealing, because of its advantages of zero leakage, no wear, long life and simple structure, it is gradually adopted by more and more industries. The existing magnetic liquid sealing devices are only suitable for the ordinary environment on the ground, and are not suitable for use on the space station in the space environment, because when in the space environment, the temperature is as low as minus 200°C, and as high as 120°C above zero , will lead to changes in the physical properties of the magnetic fluid, thereby affecting the sealing performance. In addition, the installation space of the space station is limited, and the axial dimension o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16J15/43
Inventor 李德才钱乐平
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap