Rotor torsion oscillation testing device and testing method thereof

Abstract

The invention relates to a rotor torsion oscillation testing device and a testing method thereof, belonging to the technical field of torsion oscillation measurement. By using a method of separating the testing device from a rotor shaft and testing the torsion oscillation level of the shaft without contacting with the rotor, the condition of generating the torsion oscillation by a rotor system under multi-angle condition can be tested and the vibration conditions corresponding to different bias angles can be acquired. Besides, the actual rotor system can be adjusted so as to reduce the unnecessary torsion oscillation generated in the actual running process. The device can be used for testing the level of the torsion oscillation generated by the rotor system at a rotating speed. The device is conveniently operated, the result is clear and intuitional and the accuracy is high.

Description

technical field [0001] The invention relates to a device and a testing method in the technical field of torsional vibration measurement, in particular to a rotor torsional vibration testing device and a testing method thereof. Background technique [0002] Torsional vibration is a common vibration phenomenon in rotor dynamics. Testing the torsional vibration phenomenon of the rotor shafting is beneficial to extract and grasp the vibration and motion characteristics of the rotor, and to effectively predict and prevent the possibility of its failure. [0003] According to relevant literature, most of the existing torsional vibration test experimental devices are installed with additional equipment on the rotor, which makes the test installation inconvenient, and may even affect the inherent characteristics of the rotor and the test accuracy of the torsional vibration degree. At the same time, there is usually a rigid connection between the motor shaft and the measured shaft du...

AI Technical Summary

Problems solved by technology

[0003] According to relevant literature review, most of the existing torsional vibration test experimental devices are installed with additional equipment on the rotor, which makes the test installation inconvenient, and may even affect the inherent characteristics of the rotor and the test accuracy of the torsional vibration degree

At the same time, there is usually a rigid connection between the motor shaft and the measured shaft during measurement, which is not conducive to the extraction of multiple sets of comparative data

For example, the torsional vibration detector designed by Hu Haigang of Ningbo University and others uses a non-contact test method, but a rigid coupling is used between the two axes, which is not conducive to the flexibility of the test.

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