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C-shaped cladding sealing ring of built-in spring and manufacturing method thereof

A technology with built-in springs and sealing rings, which is applied to the sealing of engines, manufacturing tools, mechanical equipment, etc., can solve the problems of insufficient leakage rate of gaskets, and achieve radial sealing, circumferential compensation, and good homogeneity Effect

Inactive Publication Date: 2011-08-31
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, resulting in a leakage rate of less than or equal to 10 -9 Pa·m3 / s requirements

Method used

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  • C-shaped cladding sealing ring of built-in spring and manufacturing method thereof
  • C-shaped cladding sealing ring of built-in spring and manufacturing method thereof
  • C-shaped cladding sealing ring of built-in spring and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 Shown is a pressure vessel for high-temperature and 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 lower head It is welded, wherein the top cover 6 is hot-pressed into a semicircle by a steel plate, and a bolt hole is drilled on the periphery of the upper flange 4, and a groove for placing the present invention is arranged on its 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 of t...

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PUM

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Abstract

The invention discloses a cladding sealing ring of a built-in spring and a manufacturing method thereof, wherein the cladding sealing ring consists of three parts of a first ring consisting of high purity silver, a second ring consisting of inconel 600, and a spiral spring which is formed by winding inconel 750 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 enables the metal sealing ring to 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 an important occasion, especially a covering sealing ring used in a high-temperature, high-pressure pressure vessel and a voltage 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. It is necessary to ensure that the leakage rate is always ≤10 under the condition of alternating temperature and pressure during operation. -9 Pa·m3 / s, 3. In accidents such as rapid cooling, the leakage rate is ≤10 -6 Pa·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 compone...

Claims

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Application Information

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IPC IPC(8): F16J15/06B23P15/00B23K31/02
Inventor 励行根宋炜
Owner NINGBO TIANSHENG SEALING PACKING
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