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High temperature and high pressure resistant seal ring

A high-pressure sealing and high-temperature-resistant technology, which is applied to engine sealing, engine components, mechanical equipment, etc., can solve the problems of O-ring electroplating processing difficulties and rising electroplating costs, and achieve environmental friendliness and eliminate leakage channels.

Pending Publication Date: 2018-08-28
SUZHOU BMC SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in nuclear power, petrochemical and other fields, some high-temperature, high-pressure environments or flanges with high leakage levels are sometimes sealed with high-performance silver-plated metal O-rings, but limited by the size of the electroplating pool, large-sized O-rings Electroplating processing is difficult, and with the increasingly stringent environmental protection requirements, the highly polluting electroplating process is facing major environmental challenges, and the cost of electroplating is rising. Therefore, it is imperative to invent new alternative products

Method used

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  • High temperature and high pressure resistant seal ring
  • High temperature and high pressure resistant seal ring
  • High temperature and high pressure resistant seal ring

Examples

Experimental program
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Effect test

Embodiment 1

[0032] see Figure 1~3 In this embodiment, there is a flexible metal coating strip 12 on the upper and lower sides of the metal ring body 11. On any longitudinal section of the metal ring body 11, the center line between the two flexible metal coating strips 12 The included angle is 180°. The sealing assembly of this embodiment includes a first flange 2 and a second flange 3, the sealing ring 1 is arranged in an annular groove 31 between the first flange 2 and the second flange 3, and the depth of the annular groove 31 is less than The height of the sealing ring 1 , that is, the outer diameter of the O-ring 13 should be greater than the depth of the annular groove 31 .

[0033] Under the action of the pressing force of the bolts pressing the first flange 2 and the second flange 3, the sealing ring 1 is axially squeezed, and the sealing ring 1 is respectively connected to the first method through the flexible metal coating belts 12 on the upper and lower sides. The first seal...

Embodiment 2

[0035] see Figure 4~6 , on the high temperature and high pressure resistant sealing ring 1 of this embodiment, two flexible metal coating strips 12 are located on the radially inner peripheral part and the radially outer peripheral part of the metal ring body 11, and on any longitudinal section of the metal ring body 11, two The angle between the centerlines of the flexible metal coating strips 12 is also 180°. In this embodiment, the sealing assembly to be sealed and connected includes a first part 4, a shaft 5 and a compression end cover 6, and the shaft 5 is fitted in the through hole of the first part 4 in a corresponding fit in the axial direction.

[0036] An annular groove 41 is opened on the shaft-side end of the first part 4. The groove width of the annular groove 41 is not less than the outer diameter of the O-ring 13. The sealing ring 1 is sleeved on the outer peripheral portion of the shaft rod 5 and It is accommodated in the annular groove 41. The compression e...

Embodiment 3

[0039] see Figure 7 , this embodiment is basically the same as Embodiment 1, the difference is that: on any longitudinal section of the metal ring body 11, the angle between the centerlines of the two flexible metal coating strips is 180°, and the two The central line of the flexible metal coating strip 12 deviates from the axis of the metal ring body 11 .

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Abstract

The invention discloses a high temperature and high pressure resistant seal ring. The seal ring comprises a metal ring body shaped like a closed ring. The longitudinal cross section of the metal ringbody is shaped like an O-shaped circular ring. At least one flexible metal coating band is arranged on the periphery of the metal ring body. The flexible metal coating bands extends in the circumferential direction of the metal ring body to form annular bands. The flexible metal coating bands extend along the periphery of the O-shaped circular ring in the circumferential direction to form the coating width. The seal ring is arranged without using the electroplating process and is small in pollution in the production process and suitable for machining of various sizes of seal rings. The seal ring is squeezed and compressed between components to be sealed when used for sealing. The flexible metal coating of the seal ring can generate plastic deformation and has an engagement effect with thesealing surface, so that flexible metal is inlaid into the uneven place of the sealing surface to fill and level up grooves and eliminate leakage passages. Accordingly, the sealing effect is achieved.

Description

technical field [0001] The invention relates to a high temperature and high pressure resistant sealing ring. Background technique [0002] At present, in nuclear power, petrochemical and other fields, some high-temperature, high-pressure environments or flanges with high leakage levels are sometimes sealed with high-performance silver-plated metal O-rings, but limited by the size of the electroplating pool, large-sized O-rings Electroplating processing is difficult, and with the increasingly stringent environmental protection requirements, the highly polluting electroplating process is facing major environmental challenges, and the cost of electroplating is rising. Therefore, it is imperative to invent new alternative products. Contents of the invention [0003] The purpose of the present invention is to provide a high temperature and high pressure resistant sealing ring that does not require electroplating but can still ensure high sealing performance in a high temperatur...

Claims

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Application Information

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IPC IPC(8): F16J15/08
CPCF16J15/0806F16J15/0881
Inventor 马志刚韩嘉兴
Owner SUZHOU BMC SEALING TECH CO LTD