| The turbine blades have a bad working environment, high temperature, and frequent faults. Therefore, studying the surface temperature measurement of turbine blades is of great significance.Due to the strong background radiation of the engine, the conventional radiation temperature measurement results are deviated with the actual temperature.Based on the principle of multispectral temperature measurement, a new generation of surface temperature measurement system for turbine blades is developed, which breaks through a number of key technologies such as multi-spectral temperature measurement algorithm for complex thermal environment, small-field multi-spectral optical system, high-reliability long-stroke probe structure, high-speed multi-channel synchronous signal acquisition and control system design, multi-view three-dimensional temperature field reconstruction, etc. A multi-spectral surface temperature measurement system is designed, which is less affected by target emissivity and background radiation, and can measure and reconstruct two-dimensional temperature field of turbine blades. |
