Mechanical seal ring with maple-leaf-like grooves

Abstract

The invention relates to a mechanical seal ring with maple-leaf-like grooves. 2-50 maple-leaf-like grooves are circumferentially and evenly distributed in one end surface of the seal ring and are 1-100 mu m deep; each maple-leaf-like groove comprises a radial linear groove and five grooves, four of the five grooves are symmetrically distributed on two sides of the radial linear groove, another groove is connected with one end, close to the inner diameter of the seal ring, of the radial linear groove, and the radial linear groove is opened in the edge of the outer diameter of the seal ring; and the maple-leaf-like grooves are symmetric about the radial central axis. The seal ring is applicable to one-way rotation and two-way rotation machinery, is used for liquid sealing or dry gas sealing, can effectively reduce abrasions of seal end surfaces, has the relatively good flow guiding effect, the better opening force and the smaller leakage amount, has the better sealing effect and dynamic pressure performance, runs more stably and is wider in application range, and the cost is saved.

Description

technical field [0001] The invention relates to a mechanical seal ring with a groove of a special shape, in particular to a mechanical seal ring with a groove imitating a maple leaf, which can be used for the sealing of rotating machines such as compressors, expanders, and pumps, and belongs to the technical field of fluid mechanical shaft seals . Background technique [0002] At present, non-contact mechanical seals have become the preferred shaft end seals for rotary fluid machinery due to their excellent performances such as non-contact, low wear, low energy consumption, and good stability. Various fluid dynamic pressure grooves are opened on the sealing ring, and a stable liquid film or gas film can be formed on the end face of the sealing ring. have a decisive role. The most widely used groove type in non-contact mechanical seals is the spiral groove. The spiral groove has good air film stiffness and strong bearing capacity, but due to the non-structural symmetry of t...

AI Technical Summary

Problems solved by technology

The most widely used groove type in non-contact mechanical seals is the spiral groove. The spiral groove has good air film stiffness and strong bearing capacity, but due to the non-structural symmetry of the groove type, the spiral groove cannot rotate in both directions.

Under some working conditions, it is required that the seal ring can rotate in both directions, but the current bidirectionally rotatable seal ring has problems such as poor dynamic pressure effect and unsatisfactory sealing performance under low-speed and low-pressure conditions. How to solve these problems has become a new research topic today. groove hot spot

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