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Transducer Structure of Electromagnetic Ultrasonic Flaw Detection for Outside Detection of Square Pipe

An electromagnetic ultrasonic and external detection technology, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, instruments, etc. And other issues

Active Publication Date: 2020-10-23
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

6. The sound wave travels far
[0007] However, in previous studies, there was no research on the design and research of electromagnetic ultrasonic flaw detection transducers that can be applied to industrial production, real-time monitoring, etc.

Method used

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  • Transducer Structure of Electromagnetic Ultrasonic Flaw Detection for Outside Detection of Square Pipe
  • Transducer Structure of Electromagnetic Ultrasonic Flaw Detection for Outside Detection of Square Pipe
  • Transducer Structure of Electromagnetic Ultrasonic Flaw Detection for Outside Detection of Square Pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The transmitting and receiving integrated flaw detection coil adopts a single-strand circumferential zigzag wiring design, a wire with a thickness of 0.05mm and a width of 1mm (taking a 65mm high reference line as the axis) is wound into a hollow cube structure, and the wire extension end is located on the side of the cube. The length is equal to the side length of the cube. When wiring, the wire is bent in a zigzag shape at a distance of 0.8mm from the extending end. The side length of the wound hollow cube structure is 65mm, and the distance between adjacent wires is 2mm.

[0042] The transducer structure using the coil extends to the outside of the pipeline and can detect pipeline defects.

Embodiment 2

[0044] The sending and receiving separation flaw detection coil adopts a double-strand zigzag wiring design. Two strands of wires with a thickness of 0.05mm and a width of 1mm are nested in parallel (taking a reference line with a height of 65mm as the axis) and are wound into a hollow cube structure. The two strands of wires extend into the end Parallel to each other and 1.5mm apart, they are all located on the side of the cube, and the length is equal to the height of the cube. When wiring, the wires are bent in a few characters at a distance of 0.8mm from the extending end. The distance between the wires is 0.5mm (the distance between adjacent wires is 0.5mm), and the side length of the wound hollow cube structure is 65mm.

[0045] The transducer structure using the coil extends to the outside of the pipeline and can detect pipeline defects.

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PUM

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Abstract

The invention belongs to the field of electromagnetic ultrasonic testing, and relates to a transducer structure for electromagnetic ultrasonic flaw detection outside a square pipeline, including a fixed plate, a magnet, a protective cylinder and a coil, and is characterized in that: the magnets include four rectangular magnets, up, down, left, and right. There are two plates, the magnet is fixed between the two fixed plates, the protective tube is located inside the magnet and is close to the magnet, the protective tube is equipped with a square coil, the wires of the coil are arranged in a broken line at equal intervals, and the current of the adjacent wires in the opposite direction. An alternating current is passed through the coil to form an eddy current inside the near surface of the workpiece; the magnet generates a bias magnetic field, and under the action of the bias magnetic field, the alternating eddy current is subjected to the alternating Lorentz force; the eddy current particle is subjected to the alternating Lorentz force Under the action of mechanical vibration, ultrasonic waves are generated to complete the judgment of whether the pipeline is damaged or not under different circumstances.

Description

technical field [0001] The invention belongs to the application field of electromagnetic ultrasonic nondestructive testing technology, and in particular relates to an electromagnetic ultrasonic flaw detection transducer structure capable of flaw detection for external detection of square pipes. Background technique [0002] Metal is one of the earliest materials used by human beings. The improvement of its smelting, processing and application technology is also accompanied by the development of human history. Modern people's lives are inseparable from metals, and metals play a pivotal role in modern industry. The application of metal materials involves various fields of the national economy: high-rise buildings, deep underground and marine facilities, long-span heavy-duty bridges, light energy-saving vehicles, high-speed ships, oil exploration and long-distance oil and gas transmission pipelines, large storage containers, engineering machinery, precision Instruments, aerosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/24G01N29/04
CPCG01N29/04G01N29/2412G01N2291/0234G01N2291/0289
Inventor 邢燕好张佳孙自强吴丹杨理践高松巍桂珺李飞徐加欣周宇浩
Owner SHENYANG POLYTECHNIC UNIV