A radial compression applied sealing member processing method

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...

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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 more uneven. The more the number of conductor cores, the lower the yield. The stability of the mechanical swaging force is poor, and it is difficult to adjust accurately. Therefore, the electrical penetration component made of this structural process material has complicated production process, low yield and high cost.

[0004] Conductor insulation and sealing adopts glass-Kvart sintering process for electrical penetrations, although it does not have the influence of aging characteristics of organic insulating materials, but for power penetrations that pass large currents, the connection method of electrical connectors is damaged. If the electrical continuity required by the product is not met, it is unsafe and unreliable

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