Fluid dynamic pressure type magnetic liquid seal device

A technology of magnetic fluid and fluid dynamic pressure, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., and can solve the problems of inability to achieve zero leakage and inability to seal high-pressure liquids.

Inactive Publication Date: 2014-04-30
BEIJING JIAOTONG UNIV
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is that the existing magnetic liquid sealing device cannot seal high-pressure liquid and the hydrody

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
  • Fluid dynamic pressure type magnetic liquid seal device
  • Fluid dynamic pressure type magnetic liquid seal device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] to attach figure 1 The present invention is further described for specific embodiments:

[0022] A composite sealing device of magnetic liquid sealing combined with fluid dynamic pressure sealing, comprising: screw 1, end cap 2, first sealing ring 3, circulation piping inlet path 4, magnetic liquid circulation system 5, circulation piping outlet path 6 , the second sealing ring 7, the left pole piece 8, the annular permanent magnet 9, the right pole piece 10, the third sealing ring 11, the shell 12, the magnetic isolation ring 13, the threaded end cover 14, the shaft sleeve 15, the first set screw 16. Moving ring 17, second set screw 18, fourth sealing ring 19, fifth sealing ring 20, wedge-shaped fluid groove 21, shaft 22.

[0023] Make up the connections between the parts of the device:

[0024] Insert the second sealing ring 7 into the concave groove on the outer circumference of the left pole piece 8, and insert the third sealing ring 11 into the concave groove on ...

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 relates to a fluid dynamic pressure type magnetic liquid seal device and belongs to the field of mechanical engineering seal. The fluid dynamic pressure type magnetic liquid seal device comprises a screw (1), an end cover (2), a first seal ring (3), a circulation tube inlet path (4), a magnetic liquid circulation system (5), a circulation tube outlet path (6), a second seal ring (7), a left pole shoe (8), an annular permanent magnet (9), a right pole shoe (10), a third seal ring (11), a shell (12), a magnetism isolation ring (13), a threaded end cover (14), a shaft sleeve (15), a first set screw (16), a movable ring (17), a second set screw (18), a fourth seal ring (19), a fifth seal ring (20), a wedge-shaped fluid slot (21) and a shaft (22). The fluid dynamic pressure type magnetic liquid seal device has the advantages that the high pressure resistance feature of fluid dynamic pressure seal and the zero leakage feature of magnetic liquid seal are utilized, fluid dynamic pressure magnetic liquid seal zero leakage is achieved, and the application range of magnetic liquid seal is widened.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] At present, magnetic liquid sealing technology can achieve zero leakage in sealing low-pressure liquid, but it is rarely used in sealing high-pressure liquid. Large, the phenomenon of interface instability is likely to occur at the sealing interface, resulting in sealing failure. Hydrodynamic seals are widely used in petroleum, chemical, machinery and other industries. However, due to the phenomenon of dripping in the seal gap, zero leakage cannot be achieved. When sealing toxic and harmful liquids, hydrodynamic seals are limited. Contents of the invention [0003] The technical problem to be solved in the present invention is that the existing magnetic liquid sealing device cannot seal high-pressure liquid and the hydrodynamic sealing device cannot achieve zero leakage when sealing high-pressure liquid, so a hydrodynamic magnetic liquid sealing devic...

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): F16J15/16F16J15/43
Inventor 李德才张俊辉
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