Online ultrasonic detection device and method for internal defect expanding of turbine engine rotor

A technology of turbine engine and ultrasonic testing, which is applied in measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, and using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve the problems of low efficiency and poor effect of non-destructive testing High search efficiency, strong recognition ability, and efficient recognition effect

Active Publication Date: 2019-08-27
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0004] In order to solve the problem of low efficiency and poor effect of extended non-destructive detection of internal defects of turbine engine rotors proposed in the above technical background, the present invention provides an ultrasonic Non-destructive testing method

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  • Online ultrasonic detection device and method for internal defect expanding of turbine engine rotor
  • Online ultrasonic detection device and method for internal defect expanding of turbine engine rotor
  • Online ultrasonic detection device and method for internal defect expanding of turbine engine rotor

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as figure 1 As shown, the on-line ultrasonic testing device for internal defect expansion of the turbine engine rotor includes a mandrel 1, a high-speed flexible shaft 11, a probe placement cover 3, an ultrasonic testing subsystem, a high-speed slip ring 15, and an industrial computer 14; the ultrasonic testing subsystem includes a phased array An all-focus probe 2 and an ultrasonic transceiver 10; the turbine engine rotor 5 to be tested is installed on the mandrel, one end is fastened by a lock nut 7, and the other end is fixed by a probe placement cover 3; the probe placement cover has a second A bolt hole, the phased array full-focus probe 2 is placed in the first bolt hole; the first bolt hole is provided with a first groove near the end of the turbine engine rotor 5, and the first wedge 4 is placed in the first groove; The p...

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Abstract

The invention discloses an online ultrasonic detection device and method for internal defect expanding of a turbine engine rotor. The device mainly comprises a probe mounting cover, an ultrasonic detection subsystem, a high-speed slip ring and an industrial control computer, wherein a phased array full focusing probe and a calibration phased array full focusing probe are arranged on a probe mounting disk through threads. Through adoption of an online ultrasonic detection technology for internal defects, online detection of the internal defects of the turbine engine rotor is realized in a rotating state; the problem that the detection needs to be performed when a workpiece is in a static state and after a test system is removed and disassembled is solved; the detection workload and the influence on the test schedule are lowered; the problem concerned with reasonable formulation of the detection period is solved; and the aim of effectively recognizing internal defects, cracks and changesthereof is fulfilled. The online detection method for internal defects of the turbine engine rotor has the characteristics of high internal defect scanning efficiency and high recognition capability,and the defects of the existing internal defect lossless detection technology are overcome.

Description

technical field [0001] The invention belongs to the technical field for indicating or measuring the characteristics of workpieces, in particular to an online non-destructive detection method for internal defect expansion of turbine engine rotors. Background technique [0002] Turbine engine rotors have high speed, high temperature, and high safety requirements; at the same time, turbine engine rotors usually contain defects such as microcracks and microholes, which are easy to become a source of fatigue, greatly reducing fatigue life, and seriously threatening the safety and reliability of aeroengines. Therefore, it is necessary to carry out high-precision detection of its internal defects and their expansion, so as to provide support for the research of crack growth and damage tolerance of turbine engine rotors. When the turbine engine rotor stops, the cracks caused by internal defects close, which has the characteristics of weak detection signal and difficult identificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06G01N29/22G01N29/275
CPCG01N29/069G01N29/22G01N29/275
Inventor 吴英龙郭小军宣海军单晓明
Owner ZHEJIANG UNIV
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