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Dynamic sealing device of reactor top cover of heavy metal cooling reactor and sealing method thereof

A dynamic sealing and reactor technology, used in reactors, sealing, nuclear power generation, etc., can solve the problems of being susceptible to irradiation, easy to age, and unable to effectively ensure the safety and reliability of the reactor, to avoid irradiation, prolong life, The effect of reducing the possibility of leakage of radioactive and extremely toxic substances

Inactive Publication Date: 2017-03-22
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing technology, rubber gaskets are often used to seal between the main container and the top cover, but this traditional rubber gasket has the problems of being easily irradiated and aging at high temperatures, so it cannot effectively guarantee Reactor Safety and Reliability

Method used

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  • Dynamic sealing device of reactor top cover of heavy metal cooling reactor and sealing method thereof

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] Such as figure 1 Shown is a schematic structural view of an embodiment of a reactor top dynamic sealing device for a heavy metal cooling reactor provided by the present invention. In this embodiment, the stack roof dynamic sealing device includes:

[0029] The pedestal 5 arranged on the main container of the heavy metal cooling reactor is formed with an annular dynamic sealing groove 8 above the pedestal 5, and the bismuth-tin alloy 4 is contained in the dy...

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Abstract

The invention discloses a dynamic sealing device of a reactor top cover of a heavy metal cooling reactor. The dynamic sealing device comprises a base, an electrical heating system, a reactor top plug cock and a top bolt, wherein an annular dynamic sealing groove is formed in the top of the base; a bismuth-tin alloy is placed in the dynamic sealing groove; one end of the electrical heating system is inserted into the bismuth-tin alloy in the dynamic sealing groove; the reactor top plug cock is used for bearing a refueling mechanism; at least one groove-shaped edge is formed in the reactor top plug cock; the groove-shaped edge is matched with the dynamic sealing groove in the base and is inserted into the bismuth-tin alloy in the dynamic sealing groove; the top bolt adopts a hollow structure and is used for sealing and fixing a temperature sensor; a thermocouple in the temperature sensor is inserted from the middle of the bolt into the dynamic sealing groove and is immersed in the bismuth-tin alloy. The invention also discloses a corresponding method. Through the adoption of the dynamic sealing device of the reactor top cover of the heavy metal cooling reactor, the sealing performance of the reactor top plug cock can be improved, and the safety performance of the reactor can be enhanced.

Description

technical field [0001] The invention relates to the technical field of heavy metal cooling reactors, in particular to a dynamic sealing device and sealing method for a reactor roof used in heavy metal cooling reactors. Background technique [0002] During the operation of the nuclear reactor, it needs to be replaced every certain period. For example, in heavy metal reactors, refueling in the reactor is used, and the top cover of the reactor needs to move relative to the main container, which may face the problem of leakage of radioactive and extremely toxic substances in the heavy metal reactor, so sealing measures are required. [0003] In the existing technology, rubber gaskets are often used to seal between the main container and the top cover, but this traditional rubber gasket has the problems of being easily irradiated and aging at high temperatures, so it cannot effectively guarantee Reactor safety and reliability. [0004] Therefore, there is an urgent need for a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C13/067G21C13/073
CPCG21C13/0675G21C13/073Y02E30/30
Inventor 仇若翔李文淮王磊段承杰
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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