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A multi-probe magnetic memory detection grid

A magnetic memory and multi-probe technology, applied in the grid field, can solve the problems of deviation of measurement results, cumbersome detection methods, missed detection of cylinders, etc., and achieve the effects of good stability, shortened detection cycle, and eliminated missed detection

Inactive Publication Date: 2017-12-19
贵州省机电研究设计院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection method is very cumbersome, and requires a large amount of reciprocating movement of the magnetic sensitive probe to fully detect the cylinder, which has a long cycle and low efficiency; not only that, but also needs to be adjusted every time the magnetic sensitive probe and the cylinder The relative position in the circumferential direction of the cylinder, once the adjustment amount is too large, it may cause missed inspection of some positions on the cylinder
In addition, at the current stage of magnetic memory testing, the probe is usually hand-held, and the angle between the probe and the measured object and the lift-off height will be affected by human factors under certain circumstances, which will cause deviations in the measurement results

Method used

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  • A multi-probe magnetic memory detection grid
  • A multi-probe magnetic memory detection grid
  • A multi-probe magnetic memory detection grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1. A multi-probe magnetic memory detection grid with a structure such as Figure 1-2 As shown, including the bracket 1, more than one set of push rod positioning groove groups are provided in the axial direction of the bracket 1, and the push rod positioning groove groups include more than one push rod positioning groove 2 and are evenly distributed along the circumferential direction of the bracket 1, each The push rod positioning groove 2 is provided with a push rod through hole 6; the push rod positioning groove 2 on the push rod positioning groove group is dislocated along the axial direction of the bracket 1. Through this structure, the electric push rod 7 fixed on the push rod positioning groove 2 can be evenly distributed, that is, the magnetic sensitive probe 8 can be evenly distributed on the surface of the cylinder to be inspected, ensuring that the inspection cylinder passes through the bracket 1 once The detection can be completed.

[0026] Along t...

Embodiment 2

[0030] Example 2. A multi-probe magnetic memory detection grid with a structure such as Figure 3-4 As shown, including the bracket 1, more than one expansion ring 4 is distributed along the axial direction of the bracket 1, and more than one fixed flat position 5 is evenly distributed along the circumferential direction of the expansion ring 4, and the fixed flat position 5 is along the axial direction of the bracket 1 Dislocation distribution, each fixed flat position 5 has a push rod through hole 6; by setting the expansion ring 4 on the outer wall of the bracket 1, the wall thickness of the bracket 1 can be reduced, saving materials, and reducing material costs; The fixed flat position 5 is set, the fixed flat position has a simple structure, is convenient to process, and saves processing cost.

[0031] The aforementioned bracket 1 is cylindrical.

[0032] A plurality of electric push rods 7 fixed with magnetic sensitive probes 8 are respectively fixed on the fixed flat ...

Embodiment 3

[0033] Example 3. A multi-probe magnetic memory detection grid with a structure such as Figure 5-6 As shown, including the bracket 1, more than one expansion ring 4 is distributed along the axial direction of the bracket 1, and more than one fixing groove 12 is evenly distributed in the circumferential direction of the expansion ring 4, the fixing groove 12 is a through groove, and the fixing groove 12 is along the axis of the bracket 1. The axial direction of the shaft is misaligned, the fixed slot 12 is provided with a fixed flat position 5, and the fixed flat position 5 is arranged on the outer wall of the bracket 1, and each fixed flat position 5 is provided with a push rod through hole 6. By setting the expansion ring 4 on the outer wall of the bracket 1 and the fixing groove 12 on the expansion ring 4, not only the wall thickness of the bracket 1 is effectively thinned, but also the material is saved, and the magnetic sensitive probes 8 are evenly distributed on the cyl...

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PUM

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Abstract

The invention discloses a multi-probe magnetic memory detection grid, which comprises a bracket (1), and more than one push rod positioning groove group is arranged in the axial direction of the bracket (1), and the push rod positioning groove group includes more than one push rod The positioning slots (2) are evenly distributed along the circumferential direction of the bracket (1), and each push rod positioning slot (2) is provided with a push rod through hole (6); the push rod positioning on the push rod positioning slot group The slots (2) are distributed along the axial direction of the bracket (1). The invention shortens the detection period, improves the detection efficiency, ensures the detection accuracy, and realizes the detection of cylinders with different diameters. Not only that, the invention has simple structure, low cost and good stability.

Description

technical field [0001] The invention relates to a grid, in particular to a multi-probe magnetic memory detection grid. Background technique [0002] The metal magnetic memory testing method is a non-destructive testing method that can determine the most dangerous area marked by the stress and strain concentration area on the testing object with high accuracy. Through this method, the early safety of the equipment can be diagnosed and evaluated more accurately. The size of the probe of the metal magnetic memory detection device is usually small, which can facilitate single-point measurement. However, at present, most of the magnetic memory detection methods of the cylinder are to reciprocate along the length direction of the cylinder through a magnetic sensitive probe on the surface of the cylinder. When the magnetic sensitive probe moves to the end of the cylinder each time, the magnetic The sensitive probe adjusts the corresponding angle along the circumferential direction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/82
Inventor 姚海峰杜剑平祝彬彬潘振敏安璐李丹宁
Owner 贵州省机电研究设计院