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Device and method for detecting residual stress on inner wall of turning pipeline based on magnetoelastic effect

A residual stress and detection device technology, which is applied in the direction of measuring device, measurement of the change force of material magnetic properties caused by applied stress, force/torque/power measuring instrument, etc., can solve the problem of complex structure, large module or volume, Limit small-diameter pipeline detection and other problems, achieve the effect of low working environment requirements, accurate detection results, and broaden the scope of application

Pending Publication Date: 2021-09-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 2. The pipeline detection method selected by most patents is image recognition detection, such as the patents represented by application numbers 201910719330.9 and 202011642047.X, as well as the radar detection method represented by application number 202011493148.5 and the sonar detection method represented by application number 202011505877.8 etc. Few use the magnetoelastic effect for detection
[0006] 3. Existing patents such as application number 201711249082.3, application number 201810775231.8, application number 201910719330.9, application number 202011642047.X, etc. can be applied to the detection of variable diameter pipes, but there is no innovation in the bending performance of the device, and the variable diameter used The diameter structure, the module or the volume is large, or the structure is complex, which increases the difficulty factor for the maintenance and repair of the device, and also limits the detection of small diameter pipes

Method used

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  • Device and method for detecting residual stress on inner wall of turning pipeline based on magnetoelastic effect
  • Device and method for detecting residual stress on inner wall of turning pipeline based on magnetoelastic effect
  • Device and method for detecting residual stress on inner wall of turning pipeline based on magnetoelastic effect

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Effect test

Embodiment 1

[0037] This embodiment provides an inner wall residual stress detecting device based on a magnetic bulge effect.

[0038] In the first aspect, the present invention provides an inner wall residual stress detecting apparatus based on a magnetic bulge effect.

[0039] The internal wall residual stress detecting device based on the magnetic bullet effect, including: fixedly disposed on the support sleeve and support table on the spindle, the support station is fixedly fixed, and the drive motor is provided with an active cylindrical gear, active cylindrical gear meshing. The driven cylindrical gear is rotated, and the coated gear is engaged with a small cone gear rotation. The small cone gear is engaged with a large cone gear rotation, and the large tapered gear rotation is rotated to fix the support sleeve on the large cone gear, and the support sleeve rotation is fixed. The detection probe of the support sleeve is rotated.

[0040] Specific: figure 1 As shown, the support sleeve 11...

Embodiment 2

[0053] This embodiment provides a method of residual stress detecting based on the inclined pipeline based on the magnetic bulge effect.

[0054] The internal wall residual stress detection method based on the magnetic bullet effect, the internal wall residual stress detecting apparatus of the fiber-based direction of the above-described embodiment, including: drive motor drive active cylindrical gear rotation, active cylinder The gear mesh is rotated from the cylindrical gear, and the coated gear is engaged with a small cone gear rotation. The small cone gear is engaged with the large cone gear rotation. The large cone gear rotates the support sleeve to rotate, the support sleeve rotates to detect the probe, to achieve the pipe Full angle detection.

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Abstract

The invention provides a device and a method for detecting residual stress on the inner wall of a turning pipeline based on a magnetoelastic effect. The device comprises a supporting sleeve and a supporting table which are fixedly arranged on a main shaft, a driving motor is fixed to the supporting table, a driving cylindrical gear is arranged on the driving motor, the driving cylindrical gear drives a driven cylindrical gear to rotate in a meshed mode, the driven cylindrical gear drives a small bevel gear to rotate in a meshed mode, the small bevel gear drives a large bevel gear to rotate in a meshed mode, the large bevel gear rotates to drive a supporting sleeve fixed to the large bevel gear to rotate, and the supporting sleeve rotates to drive detection probes fixed to the periphery of the supporting sleeve to rotate. Wheel discs are fixed to the two ends of the main shaft, a plurality of limiting grooves are formed in the wheel discs, and a rigid spring is placed in each limiting groove. Through cooperation of the limiting groove and the rigid spring, the wheel rod of the walking mechanism shrinks under external pressure, the degree of freedom does not change, and turning detection in a pipeline can be achieved.

Description

Technical field [0001] The present invention belongs to the field of pipeline detection, and in particular, the present invention relates to a residual stress detecting apparatus and method of the overlying pipeline based on the magnetic bulge effect. Background technique [0002] The statement of this section is merely the background technology information associated with the present invention, which is not necessarily constituted in prior art. [0003] The pipeline is an indispensable device for the air supply in modern work. It will cause plastic deformation or damage caused by stress damage caused by weld defects, thermal expansion, gas-liquid corrosion, improper use. But existing patents still have a certain problem: [0004] First, the magnetic detecting device used in the current residual stress detection is mostly a diode probe, such as the patent represented by the application number 202010061474.2, which is structurally reflected in the need to compensate for probe assi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01L1/12
CPCG01L5/0047G01L1/12
Inventor 王蒙高琦胡向义张乐李婷玉朱春秋
Owner SHANDONG UNIV
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