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Eddy current inspection device

An inspection device and eddy current technology, which is applied in the direction of measuring devices, instruments, and material analysis through electromagnetic means, can solve the problems that eddy current detection devices are not applicable, have narrow applicability, and cannot realize nut detection, etc., and achieve convenient, fast and applicable detection. broad effect

Pending Publication Date: 2018-05-04
CGNPC INSPECTION TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the eddy current detection device in this patent has narrow applicability, cannot detect nuts, and can only detect bolts with a single diameter and fixed length. When it is necessary to detect bolts with large differences in specifications, the eddy current detection device is not applicable

Method used

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, an eddy current inspection device can be used to detect the parts to be tested with external threads and the parts to be tested with internal threads, including a base 1, a bracket 2 installed on the base 1, a drive The driving device for rotating the piece to be tested around its own axis, and the detection assembly for performing eddy current inspection on the piece to be tested. The rotating clamping assembly 20 arranged above the base 1 is used to clamp the lower end of the object to be tested.

[0025] Such as figure 2As shown, the driving device includes a driving module 3 and a rotating module 4 arranged on the bracket 2, the driving module 3 includes a motor support plate 301, the motor support plate 301 is arranged on the base 1 through the first support leg 302, and the motor support plate 301 A driving mo...

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Abstract

The invention relates to the technical field of nondestructive examination, in particular to an eddy current inspection device. The eddy current inspection device comprises a base, a bracket mounted on the base, a driving device driving a to-be-inspected part to rotate around own axis as well as a detecting assembly for performing eddy current inspection on the to-be-inspected part, wherein the to-be-inspected part is arranged on one side of the bracket and an axis of the to-be-inspected part is located in the vertical direction; the eddy current inspection device further comprises a clampingassembly and a centering assembly, the clamping assembly is rotationally arranged above the base and used for clamping the lower end part of the to-be-inspected part, and the centering assembly is arranged on the bracket in a location-adjustable manner and used for being propped against the center of the upper end surface of the to-be-inspected part; the bracket is provided with a first guide railarranged in the vertical direction; the detecting assembly comprises an external thread inspection assembly used for inspecting external threads. According to the eddy current inspection device, automatic eddy current inspection for external thread and internal thread areas can be realized, the to-be-inspected parts with different diameters and lengths can be detected, and applicability is wider.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to an eddy current inspection device for large bolts or nuts in industries such as nuclear power plants, thermal power, petroleum, chemical industry, and electric power. Background technique [0002] Eddy current testing (ET) is a non-contact testing method that uses electromagnetic field and electromagnetic induction between metals for testing. It is one of the methods of non-destructive testing in industry. Large-scale bolts and nuts in nuclear power plants, thermal power, petroleum, chemical, electric power and other industries are important vulnerable parts. In order to ensure safe operation, key inspections of the above-mentioned bolts and nuts are required. The eddy current detection part for the bolt is mainly the external thread area of ​​the bolt, and the detection part for the nut is mainly the internal thread area of ​​the nut. If manual detection is used,...

Claims

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Application Information

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IPC IPC(8): G01N27/90
CPCG01N27/90G01N27/9026G01N27/9093
Inventor 何朋赵磊施建辉王明辉陈建王小刚
Owner CGNPC INSPECTION TECH
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