Longitudinal wave mode electromagnetic ultrasonic pipeline internal inspection spiral guided-wave transducer

An electromagnetic ultrasonic and transducer technology, which is applied in the direction of material analysis, instruments, and measuring devices using sound waves/ultrasonic waves/infrasonic waves, and can solve problems such as being single and unable to meet the actual needs of electromagnetic ultrasonic pipeline inspection

Active Publication Date: 2017-09-05
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The defects of metal pipelines generally have multi-directional defects in the circumferential, longitudinal and oblique directions. However, the traditional electromagnetic ultrasonic transducer can only generate a single longitudinal guided wave or circumferential guided wave, which cannot meet the actual needs of electromagnetic ultrasonic pipeline inspection.

Method used

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  • Longitudinal wave mode electromagnetic ultrasonic pipeline internal inspection spiral guided-wave transducer
  • Longitudinal wave mode electromagnetic ultrasonic pipeline internal inspection spiral guided-wave transducer
  • Longitudinal wave mode electromagnetic ultrasonic pipeline internal inspection spiral guided-wave transducer

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Embodiment Construction

[0030] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A longitudinal wave mode electromagnetic ultrasonic pipeline detection spiral guided wave transducer is shown, including a protective shell 1, a holding structure, a walking support structure, a permanent magnet 2 and a coil 3, the protective shell 1 is arched, and the two sides of the protective shell 1 The plane is connected with a walking support structure. The walking support structure is composed of a support 6 and a pulley 7. The support 6 is L-shaped. The upper plane at the lower corner is close to the inner arc of the protective shell 1. There is a square groove 12 in the middle of the upper side. Pulley 7 is installed in the square groove 12. The supporting member 6 is connected to the planes on both sides of the protective shell 1 , and the pulley 7 is installed on the upper part of the supporting member 6 . The other side of the walking support structure on one si...

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Abstract

The invention belongs to the technical field of ultrasonic inspection in non-destructive inspection, and relates to a longitudinal wave mode electromagnetic ultrasonic pipeline internal inspection spiral guided-wave transducer which comprises a protective shell, a holding structure, walking support structures, a permanent magnet and a coil. The transducer is characterized in that the protective shell is arched, planes on two sides of the protective shell are connected with the walking support structures, the other side of the walking support structure on one side is connected with the holding structure, a containing groove is formed in the upper side of an outer arc surface of the protective shell, the permanent magnet is connected into the containing groove, the upper end surface and the lower end surface of the permanent magnet are arc surfaces, the upper arc surface of the permanent magnet is connected with the coil, and the upper arc surface and the lower arc surface of the permanent magnet are opposite in magnetism. Electromagnetic ultrasonic guided-waves spreading along different directions of a pipeline can be generated, so that spiral guided-waves are generated in arbitrary directions of the pipeline, and pipeline defects in arbitrary directions are inspected.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic testing in nondestructive testing, and relates to a helical guided wave transducer for electromagnetic ultrasonic pipeline detection in longitudinal wave mode, in particular to a helical guided wave transducer for electromagnetic ultrasonic pipeline detection in longitudinal wave mode used in nondestructive testing of pipelines device. Background technique [0002] There are many types and large quantities of electrical metal pipes, and they are widely used. Applied in such as electric power station, petrochemical, petroleum, chemical industry, machinery industry, long-distance oil and gas, water supply project, cross-sea bridge, pier bridge pile water supply, drainage, heat supply, gas supply, agricultural irrigation, hydraulic engineering and various industrial devices middle. The non-destructive testing of pipelines plays an important role in the safety evaluation and repair of its use. E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/24
CPCG01N29/2412G01N2291/0234Y02A90/30
Inventor 邢燕好杨理践高娜高松巍张佳张青斌张强金大庆王晓峰于红阳
Owner SHENYANG POLYTECHNIC UNIV
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