A radial compression applied sealing member processing method

A processing method and technology of seals, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve problems such as large unevenness of stress state, complex production process, impact cracks, etc., to improve coordination and corrosion resistance , high degree of process automation, the effect of overcoming impact cracks

Inactive Publication Date: 2006-11-22
SHANGHAI POWER EQUIP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Early conductor insulation seals used epoxy resin adhesives, which are effective for the insulation and sealing of multi-core fine conductors, but due to today's increasingly higher nuclear safety requirements and the advancement of material technology, there is better support for insulation and sealing. Conductor insulation and sealing have been made of better special engineering plastics such as polysulfone, polyimide and polyetheretherketone. A common disadvantage of these materials is: poor impact toughness, sensitive to notches, mechanical rotation The forging process realizes shrinkage deformation. This kind of material is very easy to produce impact cracks. The radial stress state of the material is mo

Method used

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  • A radial compression applied sealing member processing method
  • A radial compression applied sealing member processing method
  • A radial compression applied sealing member processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 Shown is a schematic diagram of the seal structure,

[0027] (1) First process the seal 1:

[0028] Put the middle partition plate 2 with 14 holes into the metal outer casing 3, and weld the flange 4 with 14 holes at both ends of the metal outer casing 3. The weld seam is treated with fluorocarbon coating to prevent chemical corrosion on the surface. Center the holes of the middle partition 2 and the flange 4, and then put 14 conductors 5 through the holes of the middle partition 2 and the flange 4 into the metal outer sleeve 2, the outer surface of the conductor 5 is covered with insulating material, and the conductor 5 Polysulfone or polyether ether ketone is used to insulate and seal with the metal outer sleeve 3, and finally the two ends of the conductor 5 are respectively covered with an electroless nickel-plated copper sealing ring 6, a guide pressure ring 7 and a compression nut 8. Squeeze and seal with a wrench, and finally install the nitroge...

Embodiment 2

[0034] Annular grooves are formed inside and outside the metal outer sleeve 3, which is more conducive to sealing, and the balanced shrinking deformation force of the sealing member 1 adopts the force produced by air pressure, and other methods remain unchanged.

[0035] The sealing part of the present invention is suitable for nuclear power plants of various scales of 300, 600 and 1000 MW. Due to the adoption of the hydraulic compression diameter sealing technology, the tendency of impact cracks that are easy to occur on the sealing part is effectively solved, and the forming accuracy and mass production quality are improved. stability.

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Abstract

The invention relates to a method for processing the reducing sealing element. It comprises: first, processing the sealing element; then compressing the sealing element radial; adding the sealing element into reducing mould; processing uniform reducing deform force on the sealing element, while rotating and compressing it at the same time, to make the deformation of reducing neck to 0.8-0.92%. The invention has the advantages that: said sealing element can be used in the electric connection and sealing between the inner and outer parts of support container, especially used in the safe frame of atomic reactor or research reactor, to effectively prevent electric stress power, high temperature, high pressure, temperature change, accumulated radiation, chemical corrosion, and vibrations. It can confirm the sealing and electric properties of support container.

Description

technical field [0001] The invention relates to a processing method for compressive-diameter seals. The seals can be used for electrical connection and sealing facilities inside and outside pressure vessels, and are especially suitable for occasions such as nuclear power plant reactor containment or research reactor containment. Under normal working conditions and accident working conditions, it can effectively resist electrodynamic stress, high temperature, high pressure, drastic temperature changes, cumulative radiation, chemical corrosion and various vibrations, including the shock of earthquakes and other stresses, and ensure the sealing and electrical protection of pressure vessels. performance. Background technique [0002] Nuclear reactor containment electrical penetration is a kind of electrical equipment used to communicate the electrical connection inside and outside the containment, and to ensure that the radioactive pollution that may be generated in the containm...

Claims

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Application Information

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IPC IPC(8): B21D41/04B21D22/14B21D37/10
Inventor 项立峥黄定忠杨荫宁
Owner SHANGHAI POWER EQUIP RES INST
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