Phase test device

Abstract

An embodiment of the invention discloses a phase test device. The device comprises a vibration sensor data collector, a stroboscope and a vibration sensor. A first input terminal of the vibration sensor data collector is connected to an output terminal of the stroboscope and a second input terminal is connected to an output terminal of the vibration sensor. The stroboscope is used for outputting a key phase signal whose rotation frequency is the same with a rotation frequency of a detected rotation device to the vibration sensor data collector. The vibration sensor is used for detecting and outputting a vibration sensor signal of the detected rotation device to the vibration sensor data collector. When the above scheme is used to detect a phase of the detected rotation device which is operated, the operation of the detected rotation device does not need to be stopped and a sign position of the detected rotation device can be checked; and through the vibration sensor data collector, a vibration high point phase of the detected rotation device and a phase of the sign position can be measured. A whole process is time-saving and labor-saving and cost is low.

Description

technical field [0001] The present invention relates to the technical field of rotating machinery dynamic balancer system, and more specifically, relates to a double frequency phase test device. Background technique [0002] In the vibration analysis of rotating machinery, phase has its special meaning. It refers to the phase difference between the vibration signal and a mark on the shaft. Whenever the mark on the rotating shaft rotates to the key phase vibration sensor, a pulse signal will be generated. The phase is defined as the phase difference between the reference pulse signal and a certain point (such as positive peak or zero point, etc.) on the vibration signal. At present, the relatively common phase definition at home and abroad is the angle from the leading edge of the standard pulse signal to the first positive peak value of the previous vibration signal, that is, the pulse signal is in front and the positive peak value of the vibration signal is behind. At pr...

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Problems solved by technology

[0003] The object of the present invention is to provide a phase test device to solve the problem that in the prior art, when measuring the phase of the rotating device under test in operation, it is necessary to stop the operation of the rotating device under test first, so that the test process requires a lot of time. Financial, human and material resources

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