Application research for gas turbine dynamic gap detection based on fiber-optic measurement technology
2002
Based on the fiber-optic measurement technology, an experimental prototype is established for the inspection of dynamic gap between the gas turbine stator and blade. The structure of fiber optic sensor and encoding technology are proposed. A novel probe and the circuit with APC and soft startup are designed. The experimental results show that the fiber-optic sensor system could implement the vane dynamic gap measurement in the formidable on-site operation conditions with high temperature and rotating speed. Because of the superiorities of this kind of sensor such as simple structure, convenient to use, and the high measurement accuracy, there is an attractive application foreground on the turbine and other complex measurement problems.
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