In-situ ultrasonic detection tool for impeller blade root groove of gas turbine compressor

Abstract

The invention discloses an in-situ ultrasonic detection tool for an impeller blade root groove of a gas turbine compressor. The in-situ ultrasonic detection tool comprises a left clamping arm, a rightclamping arm, a sliding guide rail, a guide device and an L-shaped bracket; the left clamping arm and the right clamping arm are oppositely arranged and fixedly connected with the sliding guide railthrough guide rail grooves in a meshed mode, telescopic devices are arranged in the middle of the left clamping arm and the middle of the right clamping arm respectively, and a left clamping arm fixing claw and a right clamping arm fixing claw are arranged at the end of the left clamping arm and the end of the right clamping arm respectively. The guide device is meshed with the sliding guide railthrough the guide rail grooves; the L-shaped bracket comprises an L-shaped bracket vertical arm and an L-shaped bracket vertical arm; the lower end of the guide device is connected with the upper endof the L-shaped bracket vertical arm; the L-shaped bracket vertical arm is sleeved with a spring, and a L-shaped bracket horizontal arm is sleeved with a probe clamping device through a support groove. The detection tool is stably fixed, the ultrasonic probe is stably coupled, meanwhile, the ultrasonic probe is accurately scanned and accurately positioned, and in-situ efficient and reliable detection of cracks of the impeller blade root groove of the gas compressor is achieved.

Description

technical field [0001] The invention belongs to the field of ultrasonic detection, and in particular relates to an in-situ ultrasonic detection tool for blade root grooves of gas turbine compressor impellers. Background technique [0002] The compressor motor blade is the main part of the compressor to do work on the inlet gas of the gas turbine. As a rotating machine, it needs to bear the comprehensive effects of centrifugal stress, airflow impact force, vibration stress and other loads during operation. The compressor blade and the compressor rotor cooperate through the compressor blade root groove. As the key to transmit the torque of the compressor rotor to the compressor blade, the compressor blade root groove not only bears the same or greater load, but also due to corrosion , fretting wear, etc., and the working environment is even worse. The detection of the health status of the compressor impeller root groove is particularly important to ensure the safe and stable o...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of accurate scanning of ultrasonic probes in the prior art, the present invention provides an in-situ ultrasonic testing tooling for blade root slots of gas turbine compressors, so that the testing tooling can be stably fixed and the ultrasonic probes can be coupled stably, and at the same time, the ultrasonic probes Precise scanning and accurate positioning to realize in-situ efficient and reliable detection of compressor impeller blade root groove cracks

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