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Cladding sealing ring and manufacturing method thereof

A sealing ring and coating technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of insufficient leakage rate of gaskets

Active Publication Date: 2010-10-20
NINGBO TIANSHENG SEALING PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for these gaskets to avoid the stress relaxation of the gasket under the condition of alternating temperature and pressure, which will cause the leakage rate to fail to meet the requirements of ≤10-9Pa·m3 / s

Method used

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  • Cladding sealing ring and manufacturing method thereof
  • Cladding sealing ring and manufacturing method thereof
  • Cladding sealing ring and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] figure 1 Shown is a pressure vessel for high-temperature, high-pressure coolant. The cylinder 10 consists of a flange 4 with bolt threaded holes, an annular section 8 welded with coolant inlet and outlet nozzles 5, a transition section and a semicircular bottom The head is welded, wherein the top cover 6 is formed into a semicircle by hot pressing of steel plates, bolt holes are drilled on the periphery of the upper flange 4, and a groove for placing the present invention is opened on the supporting surface. When the high-temperature and high-pressure coolant flows in the pressure vessel, part of it flows directly to the outlet of the pressure vessel along the inner wall of the pressure vessel, and is accompanied by changes in temperature and pressure. Since the pressure vessel top cover and cylinder flange are two independently manufactured The components must be assembled together in the pressure vessel and must ensure high sealing performance. The internal pressure o...

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Abstract

The invention discloses a cladding sealing ring and a manufacturing method thereof, wherein the cladding sealing ring consists of three parts of a first ring consisting of inconel 600, a second ring consisting of high purity silver, and a spiral spring which is formed by winding inconel 718 wrapped by the shell of the inconel 600, and an opening is arranged at the peripheral direction of the outside of the sealing ring which is formed by connecting the three parts into a whole body. The section of the ring is of a C shape, and is provided with an outer radial sealing surface and an inner radial sealing surface. When the sealing ring is compressed, each ring of the spiral spring generates an additional bound force to the radial inconel 600, and the high purity silver ring generates plastics deformation, and thereby the minor defect of the sealing surface of a flange is made up. The elastic and plastic combination makes the metal sealing ring have good sealing performance and the capability of compensating the flange deformation and sealing ring looseness caused by temperature and pressure fluctuation.

Description

technical field [0001] The invention relates to a sealing member in a pressure vessel, in particular to a cladding sealing ring used in a high-temperature, high-pressure pressure vessel and a pressure stabilizer. Background technique [0002] For sealing under high temperature and high pressure conditions such as nuclear power plants, the following technical indicators must be considered: 1. To ensure that the leakage rate is always ≤10-9Pa m3 / s under the condition of alternating temperature and pressure during operation; 3. In accidents such as rapid cooling, the leakage rate is ≤10-6Pa·m3 / s. Pressure vessels and pressurizers are important components used in thermal power plant equipment. When these components are connected to the outside world, various types of static seals must be provided to prevent leakage of thermal cycle conversion working fluid. Seals have various cross-sectional structures to specifically seal various components, such as commonly used: pure nickel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/06
Inventor 励行根宋炜
Owner NINGBO TIANSHENG SEALING PACKING
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