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Automatic calibration device for steam generator heat transfer tube eddy current inspection probe and installation method of automatic calibration device

A steam generator and automatic calibration technology, applied in the direction of material magnetic variables, etc., can solve the problems of manual calibration and other problems, and achieve the effects of reducing calibration time, reducing emissions, and improving inspection efficiency

Active Publication Date: 2018-11-02
JIANGSU NUCLEAR POWER CORP +1
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to design an automatic calibration device for the eddy current inspection probe of the steam generator heat transfer tube and its installation method in view of the above-mentioned deficiencies in the prior art, and solve the technology that must be manually calibrated during the eddy current inspection of the steam generator heat transfer tube of the nuclear power plant question

Method used

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  • Automatic calibration device for steam generator heat transfer tube eddy current inspection probe and installation method of automatic calibration device
  • Automatic calibration device for steam generator heat transfer tube eddy current inspection probe and installation method of automatic calibration device
  • Automatic calibration device for steam generator heat transfer tube eddy current inspection probe and installation method of automatic calibration device

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Embodiment Construction

[0022] The technology of the present invention is further described below:

[0023] Such as Figure 1-3 As shown, a steam generator heat transfer tube eddy current inspection probe automatic calibration device, including: automatic calibration device main body 1, fixed locking block 2, locking screw 3 and calibration tube 4, one end of the automatic calibration device main body 1 There is a semicircular groove A, and the fixed locking block 2 is set on the semicircular groove A through a locking screw 3; the other end of the main body 1 of the automatic calibration device has a cylindrical through hole along the width direction of the main body of the device , the calibration tube 4 penetrates into the cylindrical through hole.

[0024] The main body 1 of the automatic calibration device is a right-angle plate structure, and the surface of the semicircular groove A is symmetrically provided with two threaded holes for screwing in the locking screws 3 .

[0025] The diameter ...

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Abstract

The invention belongs to the technical field of in-service nuclear power plant inspection, and particularly relates to an automatic calibration device for a steam generator heat transfer tube eddy current inspection probe and an installation method of the automatic calibration device. The automatic calibration device comprises an automatic calibration device body, a fixed locking block, locking screws and a calibration tube; a semicircular groove A is formed in one end of the automatic calibration device body; the fixed locking block is disposed on the semicircular groove A through the lockingscrews; a cylindrical through hole is formed in the other end of the automatic calibration device body in the width direction of the device body; and the calibration tube penetrates through the cylindrical through hole. By adopting the automatic calibration device, the technical problem that a nuclear power station steam generator heat transfer tube must be manually calibrated during eddy currentinspection is solved.

Description

technical field [0001] The invention belongs to the technical field of inspection of in-service nuclear power plants, and in particular relates to an automatic calibration device for an eddy current inspection probe of a heat transfer tube of a steam generator and an installation method thereof. Background technique [0002] Automatic eddy current inspection of steam generator heat transfer tubes is required during shutdown of nuclear power units, during which eddy current probes must be re-calibrated regularly. The manual calibration method is not only slow and increases the workload of manual operation, but also increases the exposure dose of personnel and the discharge of fixed radioactive waste due to the existence of nuclear radiation in the working environment. [0003] Therefore, it is urgent to develop an automatic calibration device for the eddy current inspection probe of the steam generator heat transfer tube to realize automatic calibration, avoid the staff from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/90
CPCG01N27/90G01N27/9006Y02E30/30
Inventor 杜爱国王万国施春丰马连骥刘维平胡兆祥杨兴旺王旭董佳龙彭思桐李清泉秦金光王陈雷超郑倩倩魏国军崔洪岩
Owner JIANGSU NUCLEAR POWER CORP
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