重型燃气轮机拉杆组合转子热瞬变振动特性研究  

Thermal transient vibration characteristics of a heavy duty gas turbine rod-fastened rotor

作　　者：高进[1] 黄涛 龚军军 赵仕志[1] 艾松[1] GAO Jin;HUANG Tao;GONG Junjun;ZHAO Shizhi;AI Song(Dongfang Steam Turbine Co.,Ltd.,Deyang 618000,China)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《振动与冲击》2024年第10期285-291,共7页Journal of Vibration and Shock

基　　金：重大专项(J2019-I-0003-0004)。

摘　　要：重型燃气轮机冷态启动的稳速升负荷阶段,常出现轮盘间径向变形不协调导致的相对滑移,拉杆组合转子会发生振动随燃气轮机转子温度的增加而显著变化的热瞬变振动现象。建立了周向拉杆组合转子平面摩擦带止口配合结构轮盘相对滑移的力学模型,包括平面摩擦、周向拉杆和止口与轮盘相对滑移的力学模型。以某型重型燃气轮机拉杆组合转子为研究对象,对其冷态启动过程中出现的热瞬变振动进行了分析,根据轮盘相对滑移的规律,通过减小轮盘间的变形不协调,并适当增加止口配合的过盈量的方法,成功优化了该重型燃气轮机拉杆组合转子冷态启动过程中的热瞬变振动。During the constant speed increasing of the load on a heavy gas turbine in cold start stage,there is often relative slip between the discs,caused by inconsistency radial deformation,and the rod-fastened rotor will experience thermal transient vibration,the extent of which significantly changes with the increase of gas turbine rotor temperature.The mechanical model of relative slip between the discs of a circumferential rod-fastened rotor with plane friction combined with a spigot was established.The thermal transient vibration of a certain type of heavy-duty gas turbine rod-fastened rotor occurring during its cold start process was analyzed.Based on the relative slip analysis of the wheel discs,the thermal transient vibration of the rod-fastened rotor during cold start was successfully optimized by reducing the inconsistency radial deformation between the discs and appropriately increasing the spigot interference.

关 键 词：拉杆组合转子 平面摩擦 止口配合 热瞬变振动 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]