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Portable video inspection instrument for main bolt holes of reactor pressure vessel

A technology for pressure vessels and main bolt holes, which is applied in the field of nuclear power, can solve the problems of unstable hand-holding, inability to continuously thread images, and inability to guarantee a stable picture, and achieve the effect of complete information and a uniform and stable picture

Active Publication Date: 2016-06-15
中广核工程有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the narrow space inside the main bolt hole, the recording work is carried out outside the bolt hole, and it is impossible to obtain a complete and continuous thread image by taking pictures, which is not conducive to surface condition inspection and record archiving. At the same time, due to space constraints, personnel cannot observe during recording to viewfinder
In addition, due to the unstable hand-holding, the picture cannot be guaranteed to be stable when recording

Method used

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  • Portable video inspection instrument for main bolt holes of reactor pressure vessel
  • Portable video inspection instrument for main bolt holes of reactor pressure vessel
  • Portable video inspection instrument for main bolt holes of reactor pressure vessel

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Embodiment Construction

[0021] In order to make the purpose of the invention, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0022] see figure 1 , the portable reactor pressure vessel main bolt hole video inspector of the present invention includes: a camera, a driving device for driving the camera to move up and down and rotate in the bolt hole, and an image receiving device connected with the camera.

[0023] The camera device is a wireless transmission camera 5 (also can be other video recording equipment, such as a miniature camera, etc.), which can prevent signal wires from being entwined when rotating, and the image receiving device is ...

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Abstract

The invention discloses a portable video inspection instrument for main bolt holes of a reactor pressure vessel. The portable video inspection instrument comprises an image pick-up device, a driving device and an image receiving device, wherein the driving device is used for driving the image pick-up device to move up and down and rotate in the bolt holes, and the image receiving device is connected with the image pick-up device. According to the portable video inspection instrument for the main bolt holes of the reactor pressure vessel, disclosed by the invention, the driving device drives the image pick-up device to rotate and rise or fall in threaded holes, so that acquired thread image information can be complete and continuous, and entire pictures are constant in speed and are stable.

Description

technical field [0001] The invention belongs to the technical field of nuclear power. More specifically, the invention relates to a portable reactor pressure vessel main bolt hole video inspector suitable for inspecting the thread surface condition. Background technique [0002] The operating pressure of the CPR1000 nuclear power plant reactor pressure vessel is 15.5MPa. It consists of two parts, the cylinder and the top cover. The cylinder and the top cover are connected and fastened by 58 M155×4 main bolts. When the main bolt is screwed into the main bolt hole, the threaded surface of the main bolt hole must be very clean, without any burrs and foreign objects on the surface, so as to ensure that the main bolt does not get stuck. Therefore, before installing the connection, the threaded surface in the main bolt hole must be checked to confirm whether it meets the installation standard. [0003] At present, the condition of the threaded surface is obtained by taking pictur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/003
CPCY02E30/30
Inventor 岳凯梁健李佳斌燕芯弘王强杨超吴航权王耀锋熊涛田勇
Owner 中广核工程有限公司
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