Pi-shaped groove sealing ring
A sealing ring and π-shaped groove technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of one-way rotation of the spiral groove, and achieve the effect of reducing the degree of friction and wear, improving the lubrication state and prolonging the working life.
Inactive Publication Date: 2010-08-11
KUNMING UNIV OF SCI & TECH
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Problems solved by technology
Among them, the spiral groove type is the most widely used in dry gas sealing devices, but the spiral groove can only rotate in one direction
Method used
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[0017] figure 1 . When the high-pressure side is on the inner diameter side of the sealing ring 2, the π-shaped groove 1 is opened on the corresponding inner diameter side, and the six π-shaped grooves 1 are evenly distributed in the circumferential direction, and the two radial linear grooves of the π-shaped groove 1 extend to the edge of the inner diameter. And a circumferential linear groove is arranged at the end away from the inner diameter.
[0018] see figure 2 , when the high-pressure side is on the outer diameter side of the seal ring 2, the arrangement of the π-shaped groove 1 is opposite to that of the previous example.
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The invention relates to a sealing ring, in particular to a sealing with a special shape groove, belonging to the field of shaft sealing of fluid machinery. The high-pressure side of the sealing ring is provided with a Pi-shaped groove which is two radial linear grooves, one peripheral linear groove or arc groove. The sealing ring adapts to the machinery operated by single rotation and needing bilateral switching, is used for liquid sealing or gas sealing, can effectively lower the sealing friction power consumption, prolongs the service life of a sealing device, and lowers the cost.
Description
technical field [0001] The invention relates to a sealing ring, in particular to a sealing ring with a groove of a special shape, which belongs to the shaft sealing field of fluid machinery. Background technique [0002] The traditional mechanical seal has direct contact between the moving ring and the static ring to achieve sealing. The friction and wear between the sealing rings is serious, and the service life of the sealing device is very short. For occasions with high sealing requirements, it is required to achieve zero leakage of the sealing medium, which cannot be achieved by traditional mechanical seals. With the development of technology and the increasing requirements of environmental protection, traditional mechanical seals can no longer meet the requirements of use. The end face non-contact mechanical seal is a new type of advanced mechanical seal, which is widely used in high-speed and medium-low speed fluid machinery. Non-contact mechanical seals can have the ...
Claims
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IPC IPC(8): F16J15/40
Inventor 宋鹏云李斌常静华喻向阳刘辉别玉
Owner KUNMING UNIV OF SCI & TECH
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