Tip timing measurement device and method based on optical fiber bundle probe
A technology of blade tip timing and measuring device, which is applied in the direction of measuring device, testing of mechanical components, testing of machine/structural components, etc., can solve the problems of unsolved blade tip clearance fluctuation, blade tip timing error, large blade tip timing error, etc. , to solve the tip timing error, reduce the tip timing error, and improve the tip timing accuracy.
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[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0021] For the common blade tip timing system, when the blade sweeps the blade tip timing probe during the rotation process, the blade tip timing probe will receive a blade tip timing signal pulse. According to the blade tip timing signal pulse, each The time it takes for a blade to turn to the probe. And when the blade is in the vibrating state, the time t for the blade tip to pass the probe every time it rotates actual will be different, by analyzing the arrival time t of the received blade tip timing signal pulse actual and expected tip arrival time t expected The difference between Δt i The change of the blade can be monitored, such as figure 1 As shown, in this way, the real-time detection of the health status of the blade can be realized.
[0022] When the fiber optic bundle probe is used as the blade tip timing probe, the blade t...
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