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Pipe and rod flaw detection equipment based on leakage magnetic field method

A leakage magnetic field and pipe rod technology, applied in the direction of material magnetic variables, etc., can solve the problems that the installation position of the flaw detection device cannot be accurately positioned, and it is difficult to precisely position the pipe, and achieve the effect of precise positioning, accurate positioning, and automatic control.

Active Publication Date: 2020-08-18
克拉玛依市建业能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that in the existing flaw detection technology, since the installation position of the flaw detection device cannot be accurately positioned, it is difficult to accurately locate the damage of the precision pipeline. The purpose is to provide a pipe rod flaw detection equipment based on the leakage magnetic field method , to solve the above problem

Method used

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  • Pipe and rod flaw detection equipment based on leakage magnetic field method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the pipe and rod flaw detection equipment based on the magnetic field leakage method of the present invention includes an upper fixture 1, an elastic gasket 2, a lower fixture 3, a connector 4, two or more detection boxes 5, an ultrasonic generator 6, a first ultrasonic receiver Device 7, second ultrasonic receiver 8, exciter 9, magnetic isolation sheet 10 and magnetic sensor 11; the elastic gasket 2 is connected to the detection box 5 through the connecting piece 4, and the elastic gasket 2 passes through the upper clamp 1 and the lower The fixture 3 is installed on the outer wall of the pipeline 20; the detection box 5 is attached to the outer wall of the pipeline 20 through the deformation of the elastic gasket 2; the two or more detection boxes 5 are arranged circumferentially along the outer wall of the pipeline 20, and the An ultrasonic generator 6 is arranged in the detection box 5, and a first ultrasonic receiver 7 and a second ultraso...

Embodiment 2

[0024] In this embodiment, on the basis of Embodiment 1, the ultrasonic generator 6 sends pulsed ultrasonic signals; the detection box 5 also includes: the pulses detected by the first ultrasonic receiver 7 and the second ultrasonic receiver 8 When the difference of the ultrasonic signal is less than the threshold, the control module that controls the work of the exciter 9 and the magnetic sensor 11.

[0025] When the present embodiment was implemented, the control module was preferably Cortex-A7. When the difference between the pulsed ultrasonic signals detected by the first ultrasonic receiver 7 and the second ultrasonic receiver 8 was less than the threshold, it was considered that the device had been installed in place, and the control module controlled The exciter 9 and the magnetic sensor 10 work. The invention realizes the automatic control of pipeline flaw detection by setting a control module.

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Abstract

The invention discloses a pipe and rod defect inspection device based on a leakage magnetic field method. A plurality of detection boxes are attached to an outer wall of a pipe through deformation of an elastic gasket. The two or more detection boxes are arranged on the outer wall of the pipe circumferentially. A supersonic wave generator is arranged in one detection box which is arranged on one side of the outer wall of the pipe, while a first supersonic wave receptor and a second supersonic wave receptor are disposed in another detection box, which is symmetric to the mentioned detection box relative to the axial line of the pipe. The first supersonic wave receptor and the second supersonic wave receptor are symmetric to each other relative to the axial line of supersonic wave emitted from the supersonic wave generator. An excitor, a magnetic separation sheet and a magnetic sensor are disposed in each detection box. The excitor is separated from the magnetic sensor through the magnetic separation sheet. By means of the supersonic wave generator, the first supersonic wave receptor and the second supersonic wave receptor, accurate positioning of installation position of the defect inspection device is achieved, and accurate positioning on damage in a precision pipe is further achieved.

Description

technical field [0001] The invention relates to pipeline flaw detection technology, in particular to pipe rod flaw detection equipment based on leakage magnetic field method. Background technique [0002] Non-destructive testing is to use the sound, light, magnetic and electrical characteristics of the material to detect whether there is a defect or inhomogeneity in the object to be inspected without damaging or affecting the performance of the object to be inspected, and to give the size of the defect. Information such as location, nature and quantity. Compared with destructive testing, nondestructive testing has the following characteristics. The first is non-destructive, because it will not damage the performance of the detected object when it is tested; the second is comprehensive, because the detection is non-destructive, so it can be 100% comprehensive detection of the detected object when necessary , which is impossible for destructive testing; the third is full-pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/82
CPCG01N27/82
Inventor 柳青陈汉杰钱存彬周政陈龙
Owner 克拉玛依市建业能源股份有限公司