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Mechanical sealing ring of biomimetic fish scale groove

A mechanical seal and sealing ring technology, applied in the field of bionic fish scale groove sealing ring, can solve the problems of large opening force, friction and wear of the sealing ring, and short service life of the sealing device, so as to reduce abrasive wear, reduce the degree of friction and wear, prolong the The effect of working life

Inactive Publication Date: 2011-05-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional mechanical seal, the moving ring and the static ring are in direct contact to achieve sealing. This kind of seal belongs to the contact mechanical seal. Its disadvantages are: the friction and wear of the sealing ring are serious, and the service life of the sealing device is very short.
Many domestic and foreign companies and research institutions have carried out continuous research and innovation on the sealing groove, and have developed spiral grooves, V-shaped grooves, U-shaped grooves, straight grooves, arc grooves, T-shaped grooves, herringbone grooves, etc. The groove-shaped structure, among which the spiral groove or its combination is the most widely used in the dry gas sealing device, has the advantages of large opening force and high air film stiffness, but the asymmetry of the spiral groove structure limits it to one-way operate

Method used

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  • Mechanical sealing ring of biomimetic fish scale groove
  • Mechanical sealing ring of biomimetic fish scale groove
  • Mechanical sealing ring of biomimetic fish scale groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: As shown in the figure, the high pressure side of the bionic fish scale groove mechanical seal ring is on the outer diameter side of the seal ring, and there are 8 fish scale grooves evenly distributed in the circumferential direction on the high pressure side, and the fish scale grooves are radial linear grooves and circumferential arc grooves The combination of the radial linear groove extends to the edge of the outer diameter of the ring, and the circumferential arc groove part is away from the outer diameter of the ring. The length of the groove is 0.5 times the width of the sealing ring, and the width It is 0.15 times the ratio of the outer diameter of the sealing ring to the number of grooves; each groove is an arc-shaped bottom groove with a shallow radial depth, and the outer diameter edge of the high-pressure side is the shallowest point of 0.001mm, and the groove length is 1 / 3 ( The deepest part is 0.5 mm from the edge of the outer diameter of th...

Embodiment 2

[0013] Embodiment two: if figure 2 , 3 As shown, the high pressure side of the bionic fish scale groove mechanical seal ring is on the inner diameter side of the seal ring, and a fish scale groove is evenly distributed in the circumferential direction on the high pressure side, and the fish scale groove is a combination of radial linear grooves and circumferential arc grooves. The part of the linear groove extends to the edge of the inner diameter of the ring, and the part of the circumferential arc groove is away from the inner diameter of the ring. The length of the groove is 0.75 times the width of the sealing ring, and the width It is 0.3 times the ratio of the outer diameter of the seal ring to the number of grooves; each groove is an arc-shaped bottom groove with a shallow radial depth, and the outer diameter edge of the high-pressure side is the shallowest part of 4 mm, and the groove length is 2 / 3 ( The deepest point (point F) at a distance of 5 mm from the edge of ...

Embodiment 3

[0014] Embodiment 3: As shown in the figure, the high pressure side of the bionic fish scale groove mechanical seal ring is on the outer diameter side of the seal ring, and there are 6 fish scale grooves evenly distributed in the circumferential direction on the high pressure side, and the fish scale grooves are radial linear grooves and circumferential Combination of arc-shaped grooves, the radial linear groove part extends to the edge of the outer diameter of the ring, and the circumferential arc-shaped groove part is away from the outer diameter of the ring. The length of the groove is 0.65 times the width of the sealing ring It is 0.25 times the ratio of the outer diameter of the seal ring to the number of grooves; each groove is an arc-shaped bottom groove with a shallow radial depth, and the outer diameter edge of the high-pressure side is the shallowest part of 0.01mm, and the groove length is 1 / 2 ( The deepest part is 3 mm from the edge of the outer diameter of the hig...

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Abstract

The invention relates to a mechanical sealing ring of a biomimetic fish scale groove, belonging to the technical field of fluid mechanical shaft sealing. The high-pressure side of the sealing ring is circumferentially and uniformly or randomly provided with one or more fish scale dynamic pressure grooves; and the fish scale grooves are formed by the combination of radial line grooves and circumferential arc grooves, and the shapes of the grooves are symmetric. The sealing ring is a mechanism which is not only suitable for one-way rotation, but also suitable for double-way conversion operation, thereby the invention has the advantages of effectively reducing the power consumption of sealing friction, prolonging the service life of sealing devices, reducing the cost and the like, and can be widely applied to liquid sealing or gas sealing.

Description

technical field [0001] The invention relates to a mechanically sealed bionic scale groove sealing ring, which belongs to the technical field of fluid mechanical shaft sealing. Background technique [0002] Mechanical seal is the main means to prevent the shaft end leakage of rotary fluid machinery. In the traditional mechanical seal, the moving ring and the static ring are in direct contact to achieve sealing. This type of seal is a contact mechanical seal. Its disadvantages are: the friction and wear of the sealing ring is serious, and the service life of the sealing device is very short. For occasions with relatively high sealing requirements, the traditional contact mechanical seal cannot meet the process requirements. With the development of science and technology and the increasing requirements for environmental protection, the end face non-contact mechanical seal, as a new and advanced form of mechanical seal, is widely used in high-speed and medium-low speed fluid ma...

Claims

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Application Information

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IPC IPC(8): F16J15/16F16J15/54
Inventor 宋鹏云马方波高杰毛文元
Owner KUNMING UNIV OF SCI & TECH
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