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Automatic device capable of realizing wall thickness deviation measurement of steel tube

An automatic device and deviation measurement technology, applied in the direction of measurement device, optical device, instrument, etc., can solve the problems of complicated wall thickness measurement operation, and achieve the effect of improving production automation rate, high efficiency and simple operation

Inactive Publication Date: 2016-08-24
CENT SOUTH UNIV
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Problems solved by technology

[0003] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide an automatic device capable of measuring the wall thickness deviation of steel pipes, solve the problem of complicated wall thickness measurement operations in the prior art, and improve measurement efficiency

Method used

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  • Automatic device capable of realizing wall thickness deviation measurement of steel tube
  • Automatic device capable of realizing wall thickness deviation measurement of steel tube
  • Automatic device capable of realizing wall thickness deviation measurement of steel tube

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0026] figure 1 The schematic diagram of the device designed by the present invention is shown, which includes three parts: a steel pipe, a photographing device and a program processing device.

[0027] Illustrate with a steel pipe cross-section obtained after scanning, figure 2 Shown is the profile of the steel pipe after the treatment of the present invention. The useful information area of ​​the original image is intercepted, the image is binarized, sharpened, and the image noise is removed, and then the "canny" operator of the edge function is used to obtain the image contour map, and its pixel data is stored as a large sparse matrix, and the pixel coordinates of the large circle are taken out Make its least squares circle to get its center coordinates. With the center of the big circle as the center, a set of wall thickness value...

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Abstract

The invention relates to the field of wall thickness measurement for annular section materials such as steel tubes, particularly relates to an automatic device cable of realizing wall thickness deviation measurement of a steel tube, and solves a problem that wall thickness measurement at present is low in efficiency and complex in operation. According to steel tube cross section picture acquired before software processing, an effective graphic area of the picture is intercepted and guided into a designed automation program so as to realize acquisition of wall thickness deviation data of the steel tube, and a wall thickness deviation curve is fitted; and mathematical morphology related operations are carried out on image information, an inner ring contour of the steel tube is acquired, and inner ring roundness evaluation is carried out. The automatic device provided by the invention can fit the wall thickness deviation of the steel tube automatically and evaluate the unevenness degree of the steel tube wall thickness, the measurement efficiency is high, and the operation is simple.

Description

technical field [0001] The invention relates to an automatic device for realizing the measurement of the wall thickness deviation of annular profiles such as steel pipes. Background technique [0002] The wall thickness deviation measurement of ring profiles is widely used in petroleum, shipbuilding, hydropower, chemical industry, machinery manufacturing and other industrial sectors. Applying the automatic device introduced in this paper to measure the deviation of the annular wall thickness of the steel pipe can reduce the measurement cost, reduce the measurement time and workload, and meet higher precision requirements. At present, there are conventional measurement methods and special measuring instruments for steel pipe wall thickness measurement. The conventional measurement method for steel pipe wall thickness is to use caliper measuring tools to repeatedly measure and record. This measurement method consumes a lot of human resources and the measurement accuracy is not...

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Application Information

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IPC IPC(8): G01B11/06G01B11/24
Inventor 唐华平唐海红姜永正许方炜邓赛帮彭旋
Owner CENT SOUTH UNIV
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