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DEVICE AND METHOD FOR DETECTING sparse pulse BY UTLIZING vortex finder

A sparse pulse and detector technology, which is applied to measurement devices, electrical devices, electromagnetic measurement devices, etc., can solve problems such as inappropriateness and reduction of eddy current penetration depth, and achieve the effect of increasing penetration depth

Active Publication Date: 2015-12-23
KOREA ATOMIC ENERGY RES INST
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Problems solved by technology

When the size of the drive coil is reduced, the resolution increases, however, this results in a reduction in the penetration depth of the eddy currents through the object, so it is not a suitable method for the present invention

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  • DEVICE AND METHOD FOR DETECTING sparse pulse BY UTLIZING vortex finder

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Embodiment Construction

[0043] The device and method for sparse pulse detection by using an eddy current detector of the present invention are described in more detail through the accompanying drawings. The drawings of the present invention are explained by one or more embodiments to illustrate its arrangement and function, and these embodiments do not limit the technology, spirit, scope and application of the present invention.

[0044] The terms used in the present invention are selected from common terms that can be used to explain the functions of the present invention. However, they can be replaced by other terms in the field, in customary terms, in the promotion of new technologies, and so on. In some specific cases, terms are selected by the inventors of the present invention, but, in such cases, these terms will be explained in detail in the description of the present invention. Therefore, it is clearly understood that the terms used in the present invention are not only names, but also thei...

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Abstract

The invention relates to a device and method for detecting sparse pulse by utlizing a vortex finder, exactly, the induced flux caused by pipeline defect is preferentially detected by utlizing the vortex finder, a search coil and a Hall sensor, so that the general pipeline defect and the specific pipeline defect can be simultaneously detected. According to the invention, the average thickness of a pipeline coverd with a thermal insulation material or thick pipeline is measured by a large diameter induction coil, and any local defect of the pipeline can be detected by the Hall sensor located in the central part. The quantitative measurement of pipeline wall thickness reduction can be improved, and any defect can be detected in a simple processing manner without professional operation.

Description

technical field [0001] The present invention relates to a device and method for detecting sparse pulses using an eddy current detector. More precisely, the present invention relates to a device and method for detecting sparse pulses by using an eddy current detector, using a detection coil and a Hall sensor, and preferentially measuring defects caused by pipelines. The induced magnetic flux generated can not only detect general pipeline defects but also detect specific pipeline defects at the same time. Background technique [0002] In a power plant or a chemical plant, it is important to check the thickness of the base metal preferentially, in order to prevent damage and destruction of the facility due to thinning caused by corrosion, and the corrosion occurs in pipelines covered with insulation materials, or storage Accelerated corrosion between insulation and base metal in tanks, or due to flow created by fluid in curved lines. The prior art for this is described in Kore...

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Application Information

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IPC IPC(8): G01B7/06G01N27/90
CPCG01B7/107
Inventor 朴德根李德铉金敬镐郑龙焕
Owner KOREA ATOMIC ENERGY RES INST
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