A mechanical seal end face structure with variable depth helical T-shaped groove

A mechanical seal and spiral groove technology, which is applied to engine seals, mechanical equipment, engine components, etc., can solve the problems of mechanical seal performance degradation, short service life, and unstable sealing performance, so as to improve temperature distribution and ensure sealing performance , maintain the effect of stable performance
CN110410504BActive Publication Date: 2021-06-18BEIHANG UNIV
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2021-06-18

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a mechanical seal end face structure of a variable-depth spiral T-shaped groove, which includes a moving ring and a static ring of the mechanical seal. On the downstream side, a variable-depth spiral T-shaped groove is provided on the end surface of the moving ring, and a sealing weir is arranged between the variable-depth spiral T-shaped grooves. The number of variable-depth spiral T-shaped grooves is an even number between 8 and 24; the radial width of the entire variable-depth spiral T-shaped groove accounts for no more than one-third of the radial width of the entire sealing end face. The invention effectively improves the fluid dynamic pressure effect, improves the working efficiency of the mechanical seal; ensures the static sealing performance of the mechanical seal; solid particles can be discharged from the sealing end face in time, reduces the friction between the end faces, and improves the temperature distribution. The problem of deformation of the sealing ring or even cracking of the end face of the mechanical seal due to uneven heating is avoided.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] According to the present invention, a depth T-shaped groove mechanical sealing end surface structure is provided, and in particular, a certain number of variable depth spiral T-grooves are opened on the end surface of the operation, which belongs to the rotating shaft seal technology in the fluid seal. Background technique

[0002] Mechanical seal is a shaft sealing device for turbo mechanical, widely used in equipment in aerospace, petrochemical, pharmaceutical, and energy. During the actual use of the mechanical end seal, it is required to adapt to the extreme condition conditions such as high pressure, high speed and working conditions, which results in a sealing end surface that is easily contacted, causing the frictional wear of the sealing end surface and easy to fail; to achieve non-contact sealing Then, the sealing end surface gap is increased, resulting in an increase in the amount of leakage.

[0003] Theoretical calculations and experimental stud...

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