Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sealing device for variable-working-condition gas-liquid two-phase fluid medium

A fluid medium and sealing device technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of poor sealing stability and weak adaptability of gas-liquid two-phase fluid medium, and achieve good throttling and pressure reduction, The effect of good sealing effect

Active Publication Date: 2020-12-25
CHANGSHU INSTITUTE OF TECHNOLOGY
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem of poor sealing stability and weak adaptability of the gas-liquid two-phase fluid medium when the working conditions change, the present invention provides a sealing seal for the gas-liquid two-phase fluid medium under variable working conditions. device to solve the above problems

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
  • Sealing device for variable-working-condition gas-liquid two-phase fluid medium
  • Sealing device for variable-working-condition gas-liquid two-phase fluid medium
  • Sealing device for variable-working-condition gas-liquid two-phase fluid medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description,...

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 sealing device for a variable-working-condition gas-liquid two-phase fluid medium. The sealing device is provided with a rotating shaft and a shell, and a cavity formed by the shell is used for containing a gas-liquid two-phase fluid medium; and the sealing device further comprises a labyrinth sealing mechanism and a fluid dynamic pressure mechanical sealing mechanism with double end faces, the labyrinth sealing mechanism and the fluid dynamic pressure mechanical sealing mechanism cooperate with each other, a sealing buffer cavity is formed between the labyrinth sealing mechanism and the fluid dynamic pressure mechanical sealing mechanism, and the fluid dynamic pressure mechanical sealing mechanism is provided with a static ring and a movable ring which abut against each other. Through the design of the stepped trapezoidal convex teeth of a labyrinth sealing channel and the utilization of the throttling and pressure reducing effects of the labyrinth sealing,the attenuation of the sealing buffer cavity to the medium pressure fluctuation, the structural design of a micropore group of the end surface of the static ring, the inclined design of the seal end surface of the movable ring and the limiting effect of a limiting sleeve, good sealing performance and sealing stability of dynamic pressure sealing of the variable-working-condition gas-liquid two-phase fluid medium are achieved.

Description

technical field [0001] The invention relates to the technical field of sealing devices, in particular to a sealing device for a gas-liquid two-phase fluid medium under variable working conditions. Background technique [0002] In the prior art, the fluid medium conveyed in the working chamber of some rotating machines is a gas-liquid two-phase fluid medium. When the working conditions of the rotating machinery change, the pressure of the gas-liquid two-phase fluid medium will fluctuate greatly. Since the gas is a compressible fluid, the gas will be compressed when the pressure increases, so that its volume ratio in the medium will decrease; and when the pressure decreases, the gas will expand, so that its volume ratio in the medium will increase. [0003] In the existing fluid dynamic mechanical seal devices, especially those with gas-liquid two-phase fluid medium, when the working conditions change, the opening failure of the end face often leads to the failure of the seal...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/28F16J15/26F16J15/447
CPCF16J15/28F16J15/26F16J15/4472
Inventor 梁昌平岳巧萍刘军军易风王林
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com