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Mechanical seal end face structure with auxiliary weir areas

A technology of mechanical seal and auxiliary weir area, which is applied in the direction of engine seal, mechanical equipment, engine components, etc., can solve the problems of dynamic pressure effect, limited bearing capacity, unsatisfactory end surface friction and wear, etc., to achieve enhanced cavitation, Enhanced dynamic pressure effect and increased gas pressure

Pending Publication Date: 2020-07-31
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current mechanical seal end face structure has limited dynamic pressure effect and bearing capacity, and the friction and wear of the end face is not ideal.

Method used

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  • Mechanical seal end face structure with auxiliary weir areas
  • Mechanical seal end face structure with auxiliary weir areas
  • Mechanical seal end face structure with auxiliary weir areas

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0030] see Figure 1 to Figure 3 The mechanical seal end face structure of an embodiment of the present invention. The mechanical seal end face structure is mainly used in low film thickness shaft end seals of various rotating mechanical structures, and dry gas seals, such as shaft end seals of mechanical structures such as compressors, centrifugal pumps, mixers, and expanders. like figure 1 and figure 2 As shown, the mechanical seal end face structure includes a static ring that does not rotate with the shaft and a moving ring that rotates with the shaft, wherein both th...

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Abstract

The invention discloses a mechanical seal end face structure with auxiliary weir areas. The mechanical seal end face structure comprises a static ring and a movable ring, the two opposite end faces ofthe static ring and the movable ring are arranged to be seal faces, any one of the seal faces is provided with a low-pressure side and a high-pressure side, at least one of the seal faces is providedwith a spiral groove, a seal weir area is formed between every two adjacent spiral grooves in the circumferential direction, protrusions are arranged at the bottoms of the spiral grooves, and one auxiliary weir area is formed by an area where any protrusion is located. The invention relates to the field of mechanical fluid sealing, and provides the mechanical sealing end face structure with the auxiliary weir areas, low leakage and stable working performance can be realized under certain working conditions, the service life can be prolonged, and a good dynamic pressure effect is achieved.

Description

technical field [0001] The invention relates to the field of mechanical fluid seals, and more specifically relates to a mechanical seal end face structure with a secondary weir area. Background technique [0002] In various rotary fluid machines, the mechanical seal end face structure is the key part of the foundation. First of all, the mechanical seal is a device that keeps the sealing ring fit and slides relatively under the joint action of the end face fluid pressure perpendicular to the axis of rotation, the compensating element, and the auxiliary seal, so as to form a device with less fluid leakage. For the mechanical seal in the low film thickness state, due to the relatively weak dynamic pressure effect of the end face, the wear is relatively large during the opening process, which is easy to cause damage to the end face, resulting in increased leakage of the mechanical seal under normal working conditions. [0003] In order to improve the working reliability of the ...

Claims

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Application Information

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IPC IPC(8): F16J15/34F16J15/40F16N1/00
CPCF16J15/3424F16J15/40
Inventor 黄伟峰刘莹王廷玉刘向锋李永健王玉明
Owner TSINGHUA UNIV