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Nuclear power plant personnel airlock and installation method thereof

A technology for personnel gates and nuclear power plants, applied in the field of nuclear power plant equipment, can solve problems such as low transmission accuracy, unsatisfactory sealing leakage rate, and inconvenient installation

Active Publication Date: 2019-12-20
中广核工程有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a nuclear power plant personnel gate and its installation method aiming at the technical problems of the prior art that the sealing leakage rate does not meet the requirements, the transmission precision is low, and the installation is inconvenient.

Method used

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  • Nuclear power plant personnel airlock and installation method thereof
  • Nuclear power plant personnel airlock and installation method thereof
  • Nuclear power plant personnel airlock and installation method thereof

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Effect test

Embodiment 1

[0045] The invention provides a nuclear power plant personnel gate, which is suitable for nuclear power plant double-layer containment, such as figure 1 As shown: the double-layer containment vessel includes an outer containment vessel 1 and an inner containment vessel 2, and the inner containment vessel 2 and the outer containment vessel 1 are respectively provided with an inner embedded penetration piece 4 and an outer embedded penetration piece 3, and the personnel gate penetrates the inner The embedded penetration part 4 and the external embedded penetration part 3, the internal embedded penetration part 4 is fixedly connected with the personnel gate; the external embedded penetration part 3 is flexibly and sealingly connected with the personnel gate.

[0046] The personnel gate includes: a cylinder section assembly 5, which penetrates the inner embedded penetration 4 and the outer embedded penetration 3, and is used to support the inner embedded penetration 4 and the outer...

Embodiment 2

[0074] The invention also provides a method for installing personnel gates in nuclear power plants, such as Figure 7 Shown: This installation method includes:

[0075] Step S1: Fix the support bracket to the predetermined overall horizontal introduction installation position of the personnel gate through expansion bolts, and support the support bracket A to the outer containment shell 1 through wooden blocks;

[0076] Step S2. After the support bracket A is connected and fixed, install the first sliding bracket, the second sliding bracket and the transfer trolley on the support bracket A, and adjust the elevation of the transfer trolley by adjusting the shim set. After adjustment, it is fixedly connected by connecting bolts;

[0077] Step S3, hoisting the entire personnel gate in vertically by an off-site crane, and fixing it to the first sliding bracket and the second sliding bracket through a wire rope;

[0078] Step S4, install the tow chain, pull the entire personnel ga...

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Abstract

The invention provides a nuclear power plant personnel airlock and an installation method thereof. The nuclear power plant personnel airlock is applicable to a double-layered containment of a nuclearpower plant. The double-layered containment includes an outer containment body and an inner containment body, wherein an inner pre-buried penetrating piece and an outer pre-buried penetrating piece are arranged on the inner containment body and the outer containment body correspondingly, the personnel airlock runs through the inner containment body and the outer containment body, and the inner pre-buried penetrating piece is fixedly connected with the personnel airlock; the outer pre-buried penetrating piece is flexibly connected with the personnel airlock in a sealed mode, and the personnel airlock includes a shell ring assembly, an outer sealing door, an inner sealing door and an intermediate transmission box, wherein the shell ring assembly is used for supporting the inner pre-buried penetrating piece and the outer pre-buried penetrating piece, the outer sealing door is used for establishing a shielding sealing barrier on the boundary of the outer containment body, and the inner sealing door is used for establishing a pressure-bearing sealing barrier on the boundary of the inner containment body; and sealed space is formed through enclosure of the shell ring assembly, the outersealing door and the inner sealing door, the intermediate transmission box can be detachably disposed in the sealed space, can be movably connected with the inner sealing door and the outer sealing door, and is used for controlling opening and closing of the inner sealing door and the outer sealing door. The reliability of the personnel airlock of the nuclear power plant is improved.

Description

technical field [0001] The technical invention relates to the field of nuclear power plant equipment, in particular to a nuclear power plant personnel gate and an installation method thereof. Background technique [0002] Generally, nuclear reactors are equipped with a containment system to maintain the integrity and sealing of the pressure boundary of the containment during normal operating conditions, abnormal operating conditions, and accident conditions to prevent the leakage of radioactive substances. As an important part of the nuclear reactor containment pressure boundary, the personnel gate has the same functional requirements. The existing personnel gates have technical problems such as unsatisfactory sealing leakage rate, low transmission precision and inconvenient installation. [0003] Therefore, there is an urgent need to seek a nuclear power plant personnel gate and its installation method, which can solve the technical problems of existing personnel gates suc...

Claims

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Application Information

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IPC IPC(8): G21C13/02G21C13/028
CPCG21C13/02G21C13/028G21F7/005E06B5/18
Inventor 谢洪虎
Owner 中广核工程有限公司
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