Flaw detection device and application thereof

A flaw detection device and probe technology, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems that the authenticity of the detection cannot be fully reflected, it is difficult to find the defects of the tenon teeth of the turbine disc, and the detection period is long. Achieve the effect of high promotion and application value, light weight and simple structure

Pending Publication Date: 2021-01-05
AECC AVIATION POWER CO LTD
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  • Abstract
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Problems solved by technology

[0002] The technical regulations for the repair of the tenon teeth of aero-engines and gas turbines within the service life period require detection of defects such as cracks in the tenon teeth of the turbine disc. Conventional methods for measuring the crack defects of the tenon teeth of the turbine disc include fluorescence detection and X-ray detection. and ultrasonic testing, etc. However, if conventional methods such as fluorescent testi

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  • Flaw detection device and application thereof
  • Flaw detection device and application thereof
  • Flaw detection device and application thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, the flaw detection device of the present invention includes a reference power supply 1 for loading a reference voltage to the tenon teeth of the turbine disc and a current (constant voltage micro-current change) detection circuit 2 for detecting current changes on the tenon teeth of the turbine disc, and uses For the working power supply 3 that provides power for the current detection circuit 2 and the transformer 4 for connecting to the external 220V AC power supply 9, the reference power supply 1 and the working power supply 3 are respectively connected to the L3 and L1 secondary windings of the transformer 4; the positive pole of the reference power supply 1 The output terminal is connected with the first probe 5, the negative output terminal of the reference power supply 1 is connected with the second probe...

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Abstract

The invention discloses a flaw detection device and application thereof. The flaw detection device comprises a reference power supply, a current detection circuit, a first probe connected with the positive electrode output end of the reference power supply and a second probe connected with the negative electrode output end of the reference power supply, two input ends of the current detection circuit are respectively connected with a third probe and a fourth probe, and an output end of the current detection circuit is connected with an ampere meter; wherein the reference power supply is used for loading reference voltage to an object to be detected, and the current detection circuit is used for detecting current change on the object to be detected. The device is simple in structure, smallin size, convenient to use and operate, free of missing detection, high in detection precision, wide in application range and high in popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of flaw detection, and in particular relates to a flaw detection device and its application. Background technique [0002] The technical regulations for the repair of the tenon teeth of aero-engines and gas turbines within the service life period require detection of defects such as cracks in the tenon teeth of the turbine disc. Conventional methods for measuring the crack defects of the tenon teeth of the turbine disc include fluorescence detection and X-ray detection. and ultrasonic testing, etc. However, if conventional methods such as fluorescent testing are used, it is difficult to find defects at the bottom and back of the tenon teeth of the turbine disc, so that the authenticity of the test cannot be fully reflected. Moreover, the detection method in the prior art has long detection period, high cost, and detection dead zone, and the detection parts must be taken to the detection instrument by profess...

Claims

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Application Information

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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 赵静波张晓强祁圣英张家瑞杨文范王国斌孙鸫
Owner AECC AVIATION POWER CO LTD
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