Source positioning device for radiographic inspection of impeller blade of main coolant pump of reactor

A main coolant and radiographic inspection technology, applied in the field of radiographic inspection, can solve the problems of easy distortion of weld images, difficult identification of defects, high exposure dose, etc., to reduce the workload of positioning, convenient and fast installation, and reduce the difficulty of focusing Effect

Pending Publication Date: 2022-03-18
CHINA NUCLEAR POWER OPERATION TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the in-service inspection, the radiation dose of the impeller of the main coolant pump of the reactor was as high as several hundred microsieverts. Conventional methods were used to inspect the radioactive source by using metal rods and small brackets, which took a long time, and not only the overall exposure dose was high, but also And the positioning is not accurate
The image of the weld seam is prone to distortion, and the defects are difficult to identify. It often takes trial and error to obtain the ideal film quality.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Source positioning device for radiographic inspection of impeller blade of main coolant pump of reactor
  • Source positioning device for radiographic inspection of impeller blade of main coolant pump of reactor
  • Source positioning device for radiographic inspection of impeller blade of main coolant pump of reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Although the source localization device for the radiographic inspection of the impeller blade of the reactor main coolant pump impeller of the present invention can be implemented in many different ways, this article will describe the exemplary implementation in detail with reference to the accompanying drawings, and it should be understood that the description herein should be It is believed to exemplify the structure of a source locating apparatus for radiographic inspection of reactor primary coolant pump impeller blades, without intending to limit the scope 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.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "horizontal", "vertical" etc. herein indicate The orientation or ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a reactor main coolant pump impeller blade radiographic inspection source positioning device, which comprises a clamping device and a central conduit, an annular upper slide rail is arranged above the clamping device, a slidable slide block assembly is arranged on the upper slide rail, the central conduit is arranged in the center of the clamping device in a penetrating manner, and the clamping device is arranged on the central conduit. The height of the central catheter can be adjusted to locate the radioactive source. According to the source positioning device for radiographic inspection of the impeller blade of the main coolant pump of the reactor, the radioactive source positioning accuracy is improved, and the irradiation dose is reduced.

Description

technical field [0001] The invention relates to the technical field of radiographic inspection, in particular to a source location device for radiographic inspection of impeller blades of a main coolant pump of a reactor. Background technique [0002] The main reactor coolant pump is the core equipment of the primary circuit of the nuclear power plant, and its normal operation plays a vital role in nuclear safety. The impeller of the reactor main coolant pump is the core component of the reactor main coolant pump to promote the water circulation of the primary circuit. It has been working in the environment of high temperature, high pressure, and high-speed fluid impact for a long time. Every time a nuclear power plant is overhauled, some reactor main coolant pump impellers need to be inspected. . [0003] The welds of the impeller blades of the main coolant pump of the reactor are welded by the butt joint method, located in the middle of each blade, and the shape of the we...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/18
CPCG01N23/18
Inventor 臧功志王兴旺
Owner CHINA NUCLEAR POWER OPERATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap