Tool special for reactor heat shield adjustment and centering

A special tool and heat shielding technology, which is applied in the direction of reactors, reactor fuel elements, nuclear engineering, etc., can solve problems such as alignment difficulties, achieve long working hours, save critical path time, and shorten the time occupied by overhaul critical paths.

Pending Publication Date: 2018-11-02
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a special tool for reactor heat shield adjustment and centering that overcomes the difficult problem of centering difficulties in the heat shield reinstallation process in view of the deficiencies in the prior art

Method used

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  • Tool special for reactor heat shield adjustment and centering
  • Tool special for reactor heat shield adjustment and centering

Examples

Experimental program
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Embodiment

[0018] The production of special tools for heat shielding is a special tool for adjusting the center of the nuclear power plant reactor when reinstalling the heat shield. The special tool for heat shielding is designed as a single-layer inclined plane with an "open" shape. The special tools for heat shielding are divided into two parts. One half is the handle device, one diameter Φ14 carbon steel brace is connected to two Φ14 carbon steel braces, the lower half is an 80x100 carbon steel oblique iron and two Φ14 carbon steel braces are connected for inserting heat shield Adjust the gap in the guide on both sides.

[0019] There are two slideways on both sides of the core shaft of the nuclear power plant reactor, which are used for the centering and guiding effect of large parts. When the thermal shielding of the upper component is reinstalled, the slideway beside the core shaft and the thermal shielding of the upper component are used on both sides The guide slideway is combined t...

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PUM

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Abstract

The invention belongs to the technical field of nuclear power plant reactor overhauling, and particularly relates to a tool special for reactor heat shield adjustment and centering. For the defect inthe prior art, the tool special for reactor heat shield adjustment and centering which overcomes the problem that centering is hard when a heat shield in reassembly is provided; the tool special for reactor heat shield adjustment and centering comprises a handle (1), two connecting supports (2) and tapered iron (3), wherein the two connecting supports (2) are in parallel with each other, one end of each connecting support (2) is connected with the handle (1), and the other end of each connecting support (2) is provided with the tapered iron (3); carbon steel bars with the diameter pai of 14 mmare adopted as the handle (1) and the connecting supports (2) respectively; a carbon steel material is adopted as the tapered iron (3).

Description

Technical field [0001] The invention belongs to the technical field of nuclear power plant reactor maintenance, and specifically relates to a special tool for reactor thermal shielding adjustment and centering. Background technique [0002] Nuclear power plants have to be hoisted inside the nuclear island during the previous major repairs to remove the 14t heat shield from the reactor core and reinstall it. The heat shield is prone to deviate when reinstalled to the core. The deviation distance is about 10mm, causing heat. The insulation plate on the shield cannot be installed, which has an adverse effect on the heat distribution of the core. Deviation from the original design, to overcome the difficulty of centering during the heat shield reinstallation process, a special tool for reactor heat shield adjustment and centering was developed. Summary of the invention [0003] The purpose of the present invention is to provide a special tool for reactor thermal shielding adjustment a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/02G21C19/20
CPCG21C19/02G21C19/207Y02E30/30
Inventor 高生华赵亚明张宾曹晔王统洲
Owner JIANGSU NUCLEAR POWER CORP
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