Automatic device for boiler tube row welding seam detection

Abstract

The invention relates to the technical field of nondestructive testing equipment, and discloses an automatic device for boiler tube row welding seam detection, which comprises a guide rail, a walking device, a bracket assembly, a control box assembly, a flaw detector, a balance weight, a position sensing and positioning system, a slide wire system, an anti-ray scattering system, a negative film group and rows of detected welded junctions. A water-cooled wall tube row and rows of detected welded junctions are arranged below the guide rails, and the guide rails are laid on the water-cooled wall tube row in parallel and are parallel to the rows of detected welded junctions. According to the automatic device for boiler tube row welding seam detection, negative plates are installed in a magnetic cassette and then adsorbed to the lower portions of welded junctions of a water wall tube row at a time, the position of the cassette is adjusted, and each negative plate covers three welded junctions; the walking device moves along a tube bundle welded junction with the back of the flaw detector, the walking device is provided with an isolation lead plate, the isolation lead plate is parallel to rays emitted by the flaw detector, and the rays are prevented from interfering with two adjacent negative films.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing equipment, in particular to an automatic device for detecting boiler tube row welds. Background technique [0002] The conventional method of using a flaw detector to detect pipe rows such as water-cooled walls in power stations is: first use a simple shelf to support the flaw detector, then adjust the window of the flaw detector to align with the weld to be detected, and after detecting a negative film, remove the negative film and place it on the Paste a new film on the lower part of the second weld that requires flaw detection, remove the flaw detector, move the frame to the second weld that needs flaw detection, adjust the position of the shelf to support the flaw detector again, and adjust the window to align with the weld that needs flaw detection , to carry out the flaw detection of the second film, each flaw detection operation requires the cooperation of at least two peopl...

AI Technical Summary

Problems solved by technology

[0002]The conventional practice of using flaw detectors to detect pipe rows such as water-cooled walls in power stations is: first use a simple shelf to support the flaw detector, and then adjust the window of the flaw detector to align with the flaw detector. For the welding joint, after detecting a negative film, remove the negative film, paste a new negative film on the lower part of the second weld joint that needs flaw detection, remove the flaw detector, move the shelf to the second weld joint that needs flaw detection, and adjust the position of the shelf Re-support the flaw detector, adjust the window again to align with the weld that needs flaw detection, and carry out the flaw detection of the second film. Each flaw detection operation requires the cooperation of at least two people. Every time the flaw detector is moved, the position and position of the flaw detector must be readjusted. The position of the window is time-consuming and labor-intensive, and the ellipticity of the film produced will deviate, which will affect the quality and appearance

[0003] And there is a risk of radiation and electric injury every time the film is replaced and the radiographic flaw detector is moved. In order to reduce labor intensity, improve the quality of the film and avoid radiation And the construction technology of the flaw detector with automatic walking device to detect the welding joint of the boiler water wall is designed

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