End face seal structure for rotary compensator and rotary compensator

A technology of rotary compensator and end face sealing, which is applied to expansion compensating devices, adjustable connections, passing elements, etc. for pipelines, can solve the problems of poor sealing effect and easy wear of rotary compensators, and achieves good sealing effect, The effect of reducing torque difference

Active Publication Date: 2019-03-05
JIANGSU BT PIPE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems that the existing rotary compensator is easy to wear and the sealing effect is not good, the present invention proposes an end face sealing structure and a rotary compensator with better sealing performance

Method used

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  • End face seal structure for rotary compensator and rotary compensator
  • End face seal structure for rotary compensator and rotary compensator
  • End face seal structure for rotary compensator and rotary compensator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the rotation compensator of this embodiment includes an inner tube 1, an outer tube 4, a connecting tube 8, a packing flange 3 and an O-shaped end face sealing ring 12. The outer tube 4 and the connecting tube 8 are integrally formed. structure. The outer sleeve 4 is sleeved on the inner pipe 1, one end of the inner pipe 1 passes through the outer sleeve 4 and inserted into the connecting pipe 8, the packing flange 3 is sleeved on the inner pipe 1, and one end extends into the outer sleeve 4. The inner surface of the outer sleeve 4 is provided with a ring-shaped inner boss 10, and the outer surface of the inner tube 1 is provided with a ring-shaped outer boss 11, between the ring-shaped inner boss 10 and the filler flange 3 extending into the end of the outer sleeve 4 There is a sealing packing 5, an anti-impact plate 14 is arranged between the sealing packing 5 and the annular inner boss 10, and a corresponding annular V-shaped groove is opene...

Embodiment 2

[0028] Such as figure 2 As shown, the rotation compensator in this embodiment includes an inner tube 1, an outer tube 4, a connecting tube 8, a packing flange 3, and an O-shaped end face sealing ring 12. The outer tube 4 is sleeved on the inner tube 1, and the inner tube 1 One end of the tube is inserted into the connecting tube 8 through the outer tube 4, the packing flange 3 is sleeved on the inner tube 1, and one end extends into the outer tube 4. The inner surface of the outer sleeve 4 is provided with a ring-shaped inner boss 10, and the outer surface of the inner tube 1 is provided with a ring-shaped outer boss 11, between the ring-shaped inner boss 10 and the filler flange 3 extending into the end of the outer sleeve 4 A sealing filler 5 is provided, and a wear-resistant carbon fiber layer 15 is provided between the sealing filler 5 and the outer surface of the inner tube 1 and between the sealing filler 5 and the inner surface of the outer tube 4. A corresponding annul...

Embodiment 3

[0030] Such as image 3 As shown, the rotation compensator in this embodiment includes an inner tube 1, an outer tube 4, a connecting tube 8, a packing flange 3, and an O-shaped end face sealing ring 12. The outer tube 4 is sleeved on the inner tube 1, and the inner tube 1 One end of the packing flange 3 is inserted into the connecting pipe 8 through the outer tube 4, the filler flange 3 is sleeved on the inner tube 1, and one end extends into the outer tube 4, the inner surface of the outer tube 4 is provided with an annular inner boss 10, the inner tube A ring-shaped outer boss 11 is provided on the outer surface of 1, a sealing packing 5 is provided between the ring-shaped inner boss 10 and the end of the packing flange 3 that extends into the outer sleeve 4, the ring-shaped inner boss 10 and the ring-shaped outer boss 11 A corresponding annular V-shaped groove is opened on the opposite surfaces, and the O-shaped end face sealing ring 12 is assembled in two annular V-shaped g...

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Abstract

The invention discloses an end face sealing structure used for a rotary compensator and the rotary compensator with the sealing structure. The end face sealing structure comprises an annular inner boss arranged on the inner surface of an outer sleeve, an annular outer boss arranged on the outer surface of an inner pipe, and an end face sealing ring arranged between the annular outer boss and the annular inner boss. The end face sealing structure is characterized in that the contact face of the annular inner boss and the end face sealing ring and the contact face of the annular outer boss and the end face sealing ring are each provided with an annular V-shaped groove; and the two sides, making contact with the annular inner boss and the annular outer boss, of the end face sealing ring are each in the shape of an arc and stretch into the corresponding V-shaped grooves respectively. The end face sealing structure can effectively solve the problem that an existing rotary compensator is prone to abrasion, and the sealing effect is obviously improved.

Description

Technical field [0001] The invention relates to an end face sealing structure for a rotation compensator and a rotation compensator. Background technique [0002] Compensation devices are generally required to be installed in pipelines in power, petroleum, chemical, thermal and other industries. Existing compensation devices usually include rotary compensators, corrugated compensators, sleeve compensators, spherical compensators, etc., which are used to compensate pipeline shafts. And radial displacement. When the pipeline transports high temperature and high pressure media, the requirements for the rotary compensator are higher: not only must there be sufficient displacement compensation, but also good sealing performance and long service life. [0003] The existing rotary compensator solves the problem of pipeline leakage of high temperature and high pressure medium by installing end face seals in the sealed cavity, for example, Chinese Patent 200610041301. The applicant found ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L27/08F16L51/00
CPCF16L27/0832F16L51/00
Inventor 洪磊洪亮尹明华
Owner JIANGSU BT PIPE CO LTD
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