Design and analysis of industrial steam turbine for driving synthesis gas compressor
ZHENG Feiyi, HE Dajiang, CHEN Feng, NIU Chunyan, LIN Jiong, WU Teng
（Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022， China）
 

Abstract: Aiming at the high parameters, high rotor speed and large capacity requirements for industrial steam turbine for one chemical enterprise to drive synthesis gas compressor, a steam turbine design scheme was put forward based on the turbine thermodynamic theory. The stresses of the straight blades were calculated based on the turbine strength theory. The control stage blades and the twisted blades were analyzed based on the finite element analysis. The rotor vibration responses of four different mass imbalances were analyzed carefully with the rotor dynamics procedure. The rotor actual vibration was checked with high speed dynamic balance test and no load test. The results indicate that the power and rotate speed can meet the requirements of customers. The stresses of the blades are within the allowable stress ranges, and the stress requirements are satisfied. The critical rotor speeds are enough away from the working speed. The amplitude is less than 25 μm, which meets the API612. In brief, the design scheme satisfies the requirements of customers, and can be widely used to drive synthesis gas compressor.
Key words: industrial steam turbine ; blade ; stress analysis ; rotor dynamics