Device and installation method for precision control of pre-embedded components of push-pull device in nuclear power plant

A push-pull device and precision control technology, which is applied in nuclear power generation, nuclear power plant auxiliary equipment, nuclear engineering, etc., can solve the problems of difficult installation and precision control of push-pull device embedded parts, and achieve the effect of easy flexible operation and easy installation.

Active Publication Date: 2020-02-07
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a device for precision control of embedded components of push-pull devices in nuclear power plants, so as to solve the problem of difficult installation and precision control of embedded parts of push-pull devices

Method used

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  • Device and installation method for precision control of pre-embedded components of push-pull device in nuclear power plant
  • Device and installation method for precision control of pre-embedded components of push-pull device in nuclear power plant
  • Device and installation method for precision control of pre-embedded components of push-pull device in nuclear power plant

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Embodiment Construction

[0017] Attached below Figures 1 to 6 The present invention is further described with examples.

[0018] Step 1: Prefabricate the embedded casing 1 in the factory and weld it with the steel panel 2 to meet the vertical coplanarity of the center line of the casing; weld the angle steel 8 with the blue bolt 9, and weld the angle steel 8 with the angle steel connector 12 to form a detachable Adjust the support; connect the embedded casing and the detachable adjustable support through the hoop 10, and adjust the parallelism of the centerlines of the two embedded casings by adjusting the number of gaskets 11 and the threads of the blue bolts 9 to meet the horizontal parallelism Tolerance requirement ≦1mm, tighten the nut a13.

[0019] Step 2, prefabricate the embedded plate 3 in the factory, and connect the bolts 15 to the embedded plate 3 through perforated plug welding 16 .

[0020] Step 3, install the embedded slab 3 on the peripheral floor 6 on site, and adjust the centerline...

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Abstract

The present invention discloses a device for nuclear power plant push-pull device embedded component precision control and an installation method thereof. A push-pull device embedded component is in the cylindrical concrete wall of a reactor core and comprises a push-pull device embedded sleeve pipe component, an embedded plate and a guide rail. The installation method comprises a step of binding reactor core cylindrical concrete wall steel meshs, a step of installing the push-pull device embedded sleeve pipe component, carrying out precision adjustment on the embedded sleeve pipe component, and fixing the push-pull device embedded sleeve pipe component, a step of installing the embedded plate, a step of pouring a core concrete wall body, and a step of installing the guide rail in the embedded plate, and adjusting the guide rail precision. The problems of the crossing collision between the push-pull device embedded component and the dense steel meshes and many other embedded items and difficult construction are solved, the control requirement of a push-pull device embedded component elevation parallelism tolerance (smaller than 1mm) is realized, the requirement of push-pull device axis vertical coplanarity is realized, and the flexible operation of a push-pull device is facilitated.

Description

technical field [0001] The invention belongs to the field of design and construction of nuclear power plants, and in particular relates to a device and an installation method for precision control of pre-embedded components of a push-pull device of a nuclear power plant. Background technique [0002] The push-pull device for external detectors located on the primary shielding wall of the nuclear reactor core is a mechanical device that installs and replaces detectors by moving the neutron detectors of the nuclear instrumentation system horizontally. Moving back and forth along the horizontal direction, the push-pull device needs to pass through the casing to penetrate the primary shielding wall. A pre-embedded plate shall be set on the peripheral floor of the primary shielding wall for the pulley movement of the push-pull device. The primary shielding wall of the nuclear grade anti-seismic category I plays an extremely important role in the radiation shielding protection of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21D1/02G21C17/06E04G21/14
CPCE04G21/14G21C17/06G21D1/02Y02E30/00Y02E30/30
Inventor 马波葛鸿辉顾生泉罗刚王洪良
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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