Foreign matter prevention umbrella-shaped device for VVER horizontal steam generator eddy current inspection

A steam generator and foreign object prevention technology, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of loose and falling off equipment parts, foreign objects in heat transfer tubes, and threats to the operation safety of nuclear power plants, so as to reduce workload and improve work efficiency. , the effect of reducing the risk of foreign bodies

Pending Publication Date: 2022-03-18
CHINA NUCLEAR POWER OPERATION TECH
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AI Technical Summary

Problems solved by technology

[0003] To complete the eddy current inspection of the heat transfer tube of the horizontal steam generator, it is necessary to hoist the eddy current inspection equipment into the header of the steam generator as a whole. Equipment parts loosen and fall off, forming foreign matter in the heat transfer tube, which seriously threatens the operation safety of the nuclear power plant

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  • Foreign matter prevention umbrella-shaped device for VVER horizontal steam generator eddy current inspection
  • Foreign matter prevention umbrella-shaped device for VVER horizontal steam generator eddy current inspection
  • Foreign matter prevention umbrella-shaped device for VVER horizontal steam generator eddy current inspection

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Embodiment Construction

[0029] Although the anti-foreign matter umbrella device for VVER horizontal steam generator eddy current inspection of the present invention can be implemented in many different ways, this article will describe the exemplary implementation in detail in conjunction with the accompanying drawings, it can be understood that this article The description should be considered as an illustration of the structure of an anti-foreign matter umbrella device for eddy current inspection of a VVER horizontal steam generator, and is not intended to limit the scope of protection of the present invention to the exemplary embodiments. Accordingly, the drawings and description of the detailed description are to be considered as illustrative in nature of the invention and not as limiting.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "horizontal" herein The orientation or positional rel...

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Abstract

The invention provides a foreign matter prevention umbrella-shaped device for VVER horizontal steam generator vortex inspection, which comprises a power assembly, a pull rod, a support assembly and a support rod which are sequentially hinged to form a closed loop, the pull rod is hinged to the upper part of the power assembly, the support rod is hinged to the lower part of the power assembly, and the pull rod is hinged to the lower part of the support assembly. The power assembly drives the supporting rod to rotate upwards so that the supporting assembly and the supporting rod can be located at the horizontal position, a foreign matter preventing umbrella ring is arranged below the supporting assembly, and umbrella cloth is installed on the foreign matter preventing umbrella ring. The foreign matter prevention umbrella-shaped device for VVER horizontal steam generator eddy current inspection is rapid and coherent in stretching and contracting action and convenient to install, the working efficiency can be remarkably improved, the labor intensity of installation personnel is relieved, the good foreign matter prevention effect is achieved, and stable and reliable operation of a nuclear power unit is guaranteed.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of horizontal steam generators in nuclear power plants, in particular to an anti-foreign object umbrella device for eddy current inspection of VVER horizontal steam generators. Background technique [0002] In nuclear power plants, the steam generator heat transfer tube is an important part of the pressure boundary of the primary circuit, and its pressure boundary area accounts for more than 70% of the primary circuit boundary. The horizontal steam generator adopts a vertical double header structure, which is divided into a primary coolant inlet header and a primary coolant outlet header, and the two headers are connected by a horizontally arranged heat transfer tube bundle. Since the wall thickness of the heat transfer tube of the horizontal steam generator is only 1.5mm, and it needs to operate under high temperature and high pressure conditions, the heat transfer tube becomes th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/9093
CPCG01N27/9093
Inventor 张鹏姚传党刘岩苗巍舰王家建朱宏益
Owner CHINA NUCLEAR POWER OPERATION TECH
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