Research And Analysis Of Turbine-generator Units Rotor Thermal Bending Failure

Turbine-generator units is a large power station in the heart of the thermal power plant equipment, due to its high-speed rotating machinery, so there will inevitably run vibration. The main components of the turbine rotor turbine generator as the core equipment, so the vibration is normal or not is relationship to the ability to secure the operation of the entire power plant units. Large-scale power plant units in the rotor unbalance fault is one of the most common faults, its in-depth research and analysis is necessary. Unbalanced fault which can be divided into unbalanced mass and thermal imbalance,This paper studies the thermal imbalance Turbine Turbine Rotor failure in bending failure. First Turbine Rotor bending failure mechanism analysis carried out; then through a combination of engineering examples analyzed the causes of its failure, and summarizes the different reasons have caused the failure of the turbine rotor thermal bendingappropriate heat treatment measures; analysis of its failures in basic mechanism of cause and appropriate treatment measures on the heat of the turbine rotor thermal bending fault features a focus on analysis, respectively, from the two aspects of the boot process and run the process to analyze the failure characteristics of the turbine thermal bending will also be similar to their fault movement Rubbing characteristics were compared and summarized how the difference of several similar fault diagnosis; Finally, the proposed model is based on time series IMA turbine rotor thermal bending fault trend forecasting methods, and using the method of rotor heat Projects were unbalanced fault vibration prediction validation analysis, where the comparative analysis with other methods, concluded prove IMA model is suitable for steam turbine rotor thermal bending vibration due to the heat caused by failure prediction, get a good effect.