Internal inspection electromagnetic ultrasonic thickness measurement energy converter structure of circular pipeline

An electromagnetic ultrasonic and transducer technology, applied in the direction of using ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., can solve the problems of long acoustic wave propagation distance, electromagnetic ultrasonic thickness measurement transducer design and research, etc., to prolong the service life. , Realize the effect of engineering detection application and protection coil

Active Publication Date: 2018-06-29
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
However, in previous studies, there was no design research on electromagnetic ultra

Method used

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  • Internal inspection electromagnetic ultrasonic thickness measurement energy converter structure of circular pipeline
  • Internal inspection electromagnetic ultrasonic thickness measurement energy converter structure of circular pipeline
  • Internal inspection electromagnetic ultrasonic thickness measurement energy converter structure of circular pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The structure of the transducer adopts a transceiver integrated thickness measuring coil and adopts a single-strand circumferential winding wiring design. A wire with a thickness of 0.05mm and a width of 1mm (taking a reference line with a height of 65mm as the axis) is wound into a hollow cylinder structure, and the wire extends into the The end is located on the side of the cylinder, the length is equal to the height of the cylinder, the diameter of the coil is 50mm, and the distance between adjacent wires is 2mm.

[0047] The transducer structure using this coil penetrates deep into the inner side of the pipe and can detect the thickness of the pipe.

Embodiment 2

[0049] The structure of the transducer adopts the separation of sending and receiving. The thickness measuring coil adopts the double-strand circumferential winding 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 cylinder. Body structure, the two strands of wires are parallel to each other and 1.5mm apart, both located on the side of the cylinder, the length is equal to the height of the cylinder, the distance between adjacent wires of a single strand is 2mm, and the distance between adjacent wires between double strands is 0.5mm (adjacent wires pitch 0.5mm), coil diameter 50mm.

[0050] The transducer structure using this coil penetrates deep into the inner side of the pipe and can detect the thickness of the pipe.

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Abstract

The invention belongs to the field of electromagnetic ultrasonic detection, and relates to an internal inspection electromagnetic ultrasonic thickness measurement energy converter structure of a circular pipeline. The energy converter structure comprises a handle, a coil, a protecting cylinder and a magnet; the connecting steel ring is connected to one end of the handle, and the magnet is a hollowcylindrical magnet formed by combining three equal parts in peripheral direction; the magnet is fixed between the connecting steel ring and the fixing steel ring, the protecting cylinder is sleeved at the outer part of the magnet and bonded with the magnet; the annular coil is arranged in the protecting cylinder, and leads of the coil are coiled and aligned on the same direction with equal space,current directions of adjacent leads are the same. The coil forms a vortex at the inner part closing to the surface of the work piece by alternating current; the magnet generates an offset magnetic field; under the effect of the offset magnetic field, the alternating vortex suffers from the alternating lorentz force; under the effect of the lorentz force, the vortex mass point forms mechanical vibration and generates ultrasound wave, thus pipeline thickness can be judged under different conditions.

Description

technical field [0001] The invention belongs to the application field of electromagnetic ultrasonic nondestructive testing technology, and in particular relates to a structure of an electromagnetic ultrasonic thickness measuring transducer capable of measuring thickness in a circular pipeline. 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, aerospa...

Claims

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Application Information

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IPC IPC(8): G01B17/02
CPCG01B17/02
Inventor 邢燕好徐加欣桂珺杨理践高松巍孙自强吴丹李飞张佳周宇浩
Owner SHENYANG POLYTECHNIC UNIV
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