催化剂结垢引起的烟气轮机转子振动特性分析

摘要

Making use of ANSYS to model flue gas turbine's rotor and to analyze the rotor's vibration characteristics caused by the fouling on the blade surface was implemented;and the vibration characteristics of the model with catalyst fouling were investigated,including vibration characteristics' variation at the time that mass of the catalyst fouling changes;and the influence rule of different positions and fouling masses on the ro tor vibration characteristics was predicted.The results show that,the three parameters of the fouling on the blade surface like the eccentricity,circumferential angle and the mass affect the vibration characteristics of the rotor respectively;and both mass and eccentricity of the fouling seriously affects the rotor vibration velocity;the greater mass and eccentricity bring about more obvious rotor vibration velocity;and the circumferential angle of the fouling has no influence on the rotor's vibration velocity.%采用ANSYS软件对烟气轮机转子进行数值建模,对叶片表面结垢引起的烟气轮机转子振动特性进行分析.研究了模型在带有催化剂结垢情况下的振动特性,并探索了催化剂结垢质量变化的情况下,烟气轮机转子振动特性的变化规律;预测不同位置和质量的结垢对烟气轮机转子振动特性的影响规律.结果表明:烟气轮机叶片表面结垢的3个参数(偏心距、周向角度、质量)对转子振动特性的影响各不相同.结垢质量大小和偏心距严重影响烟气轮机转子振动速度,质量越大、偏心距越大振动速度越大,而结垢的周向角度对转子振动速度的大小没有影响.