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Radiographic inspection device for welding seam between the lower head of the nuclear power plant voltage stabilizer and the surge pipe joint

A technology of ray inspection and voltage stabilizer, which is applied in nuclear power generation, nuclear engineering, nuclear reactor monitoring, etc., can solve the problems that stable contact cannot be guaranteed, and the reliability of the results cannot be guaranteed, and achieves small footprint, stable landing point, The effect of ensuring reliability

Active Publication Date: 2011-12-07
中广核(深圳)运营技术与辐射监测有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high voltage stabilizer, when the above inspection device is placed in the voltage stabilizer, it cannot guarantee a balanced and stable contact with the partition, so the reliability of the detection results cannot be guaranteed

Method used

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  • Radiographic inspection device for welding seam between the lower head of the nuclear power plant voltage stabilizer and the surge pipe joint
  • Radiographic inspection device for welding seam between the lower head of the nuclear power plant voltage stabilizer and the surge pipe joint
  • Radiographic inspection device for welding seam between the lower head of the nuclear power plant voltage stabilizer and the surge pipe joint

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Embodiment Construction

[0028] The preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0029] Such as image 3 The shown voltage stabilizer for nuclear power plants (the dotted line part in the figure), its main body is a cylinder 7, the upper end of the cylinder 7 is welded with a hemispherical upper head 8, one side of the upper head 8 has a manhole 81, and the lower end of the cylinder Weld the sealing head 9, and weld a surge pipe connecting pipe 10 at the bottom of the lower sealing head 9. The welding seam 100 to be detected is the joint between the lower sealing head 9 and the wave pipe connecting pipe 10. At the same time, the inside of the voltage stabilizer is located An electric heater partition 20 is also arranged between the cylinder 7 and the lower head 9, and a hole is opened in the center of the partition 20. The structure of the voltage stabilizer is a known structure, and the above is only a brief description o...

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Abstract

The invention relates to a welding line X-ray inspection device between a lower seal head of a voltage stabilizer and a surge nozzle in a nuclear power station, which comprises a location support bracket for being fixed at the manhole position of the voltage stabilizer, a transmission mechanism arranged on the location support bracket, an overturnable hanging body with an accommodating space, an X-ray source location mechanism, a winding gear and a film fixer, wherein the X-ray source location mechanism comprises a locating seat with an X-ray source, a center pole coaxially connected with the locating seat and a plurality of locating rods arranged on the center pole in a foldable way, and the drag cable of the winding gear is fixedly connected with the center pole of the X-ray source location mechanism. When the inspection device is in an out-of-service condition, the X-ray source location mechanism can be arranged in the hanging body in a foldable way, the hanging body is horizontally arranged on the location support bracket, so that the occupied space is smaller, and the inspection device is convenient to be carried; and during the installation, the X-ray source locating seat is kept vertical dropping all the time, the droppoint is stable, and thereby the X-ray source is ensured to uniformly radiate the welding line, and the reliability of the inspection result is guaranteed.

Description

technical field [0001] The invention relates to a welding seam inspection device, in particular to a device for welding seam inspection and positioning through radiation. Background technique [0002] The nuclear power plant voltage stabilizer is a cylindrical container with a height of more than 10 meters, and the upper and lower parts are welded with a hemispherical head. The voltage stabilizer is used to regulate the pressure of the primary circuit system of the nuclear power plant, and is the primary core component of the nuclear power plant. The fluctuating pipe is connected to the lower head of the voltage stabilizer, and the connection weld is located in the supporting skirt of the voltage stabilizer. [0003] According to the requirements of the relevant inspection specifications of nuclear power plants, regular inspections must be carried out on the welded seams of the takeover pipes to ensure the sealing state of the welded seams and prevent leakage. In the prior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/017G01N23/04
CPCY02E30/30
Inventor 李江刘金宏李明陈怀东洪茂成
Owner 中广核(深圳)运营技术与辐射监测有限公司
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