Nuclear power station mechanical penetration piece rust removal and corrosion prevention integrated device and working method

A technology for penetrating parts and nuclear power plants, which is applied in the field of integrated devices for rust removal and anti-corrosion coating in deep holes and narrow gaps of mechanical penetrating parts of nuclear power plants. dirty effect

Pending Publication Date: 2021-01-26
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to reach this position with traditional technology, and the rust layer is usually located at the fillet weld. It is difficult to achieve good rust removal and coating effects by manual grinding and rust removal and anti-corrosion coating. Usually, the rust layer is not polished cleanly, leaks Coating, peeling, uneven coating, etc.
On the other hand, these penetrating parts are located in the range of nuclear radiation. People who have been in the nuclear radiation environment for a long time will cause harm to personal safety. Even if they are polished or sandblasted with extended tools, dust will be generated. Dust in the radiation environment is harmful to nuclear power plants. is unacceptable

Method used

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  • Nuclear power station mechanical penetration piece rust removal and corrosion prevention integrated device and working method
  • Nuclear power station mechanical penetration piece rust removal and corrosion prevention integrated device and working method
  • Nuclear power station mechanical penetration piece rust removal and corrosion prevention integrated device and working method

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Embodiment 1

[0039] Example 1: The internal and external welds at the root of the penetrating member are corroded. Before using the present invention, prepare the anticorrosion coating paint, and connect the paint conveying pipeline. During the use of the present invention, the open-close cylinder support mechanism 78 is in a freely open state before it is placed in the through-piece workpiece, such as image 3 As shown, the open-close cylindrical support mechanism 78 surrounds the central pipe of the penetrating piece, and is closed to form a cylinder, such as Figure 4 As shown, the cylinder is retracted at this time, and the cylinder roller in the front section of the cylinder is retracted. At this time, the mechanism can be pushed into the inner wall of the outer pipe of the penetration to the bottom of the penetration. Start the air compressor, open the main air valve 22 and the cylinder switch 27 in the control mechanism, adjust the cylinder pressure to 0.4MPa through the cylinder p...

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Abstract

The invention discloses a nuclear power station mechanical penetration piece rust removal and corrosion prevention integrated device and a working method. A rust removal and corrosion prevention integrated mechanism at the front end is controlled by a flexible shaft to remove rust layers at the roots of inner and outer pipelines of the penetration piece, coat a corrosion prevention coating and thelike. The device is mainly used for rust removal and corrosion prevention integrated construction of nuclear power deep hole narrow gap parts, is fast and convenient to install, can polish inner andouter rust areas at the same time, and achieves semi-automatic operation. The equipment is particularly suitable for a radiation hot spot area, and can effectively prevent dust radiation contaminationin the polishing process of constructors and prevent the constructors from being directly irradiated.

Description

technical field [0001] The invention relates to the technical field of corrosion protection for nuclear power plants, in particular to an integrated device for derusting, anti-corrosion and coating with deep holes and narrow gaps in mechanical penetrating parts of nuclear power plants and a working method. Background technique [0002] There are a large number of mechanical penetrating parts in the radiation control area of ​​the nuclear island of the nuclear power plant, which is the last physical barrier for the radiation protection of the nuclear power plant. Because it is located in the coastal area, the air humidity is high, the salt content is high, and there is a lot of rain. After 1 to 2 years of installation, most of the mechanical penetrating parts will gradually rust, which will endanger the safety of equipment and personnel. In order to prevent structural damage caused by aggravated corrosion and radiation diffusion, the corrosion-resistant mechanical penetrating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D1/02B05B7/02B24B27/033B24B41/04B24B55/06
CPCB05B7/02B24B27/033B24B41/04B24B55/06G21D1/02Y02E30/00
Inventor 李勇刘福广刘刚韩天鹏米紫昊杨二娟王艳松王博孙睿杨兰
Owner XIAN THERMAL POWER RES INST CO LTD
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