1000MW汽轮机转子对轮晃度超差检修方法浅析  

Analysis on Repair Method for Excessive Coupler Sloshing in 1000 MW Turbine Rotor

作　　者：逯穆达 郑笑丹 LU Muda;ZHENG Xiaodan(Shanghai Turbine Works Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海汽轮机厂有限公司,上海200240

出　　处：《热力透平》2021年第4期285-288,共4页Thermal Turbine

摘　　要：大型汽轮机机组具有转速高、运行平稳、单机功率大等特点,广泛应用于电力行业,作为电厂运行的重要组成部分,其运行稳定性会直接影响电厂经济效益。某电厂汽轮机转子安装过程中出现了转子对轮晃度超标的情况,直接影响了机组的运行安全。经过分析和研究,获得了汽轮机转子对轮检修工艺及处理方法。首先获取汽轮发电机转子的晃度及同心度、汽轮机转子端面厚度等方面的数据,初步核实汽轮机转子对轮晃度超差方位及超标程度,然后尝试在汽轮机对轮间特定位置增加工艺垫片,减少转子瓢偏对对轮晃度的影响,并观察其运行改善情况,得出汽轮机对轮晃度超标的原因,最终提出汽轮机转子的现场修正方案,使该电厂汽轮机对轮晃度超标问题得到有效解决。研究成果对同类型机组具有一定的借鉴意义。With characteristics of high speed, stable operation and large power of single unit, large capacity turbines are widely applied in electricity industry. Turbine is an important part in power plant, and its stability affects the economic benefit of power plant directly. It was observed during installation that the sloshing of the rotor coupler was beyond the standard, therefore the operation safety of the unit might be affected. The repair procedure and method were put forward after analysis and research. Firstly, the data of rotor sloshing and concentricity were obtained as well as the thickness of rotor transverse, and the position and the extent of sloshing were verified. Secondly, gaskets were added on certain position between the turbine couplers to reduce the influence of rotor displacement on the coupler. The operation improvement was observed and the cause of excessive coupler sloshing was found out. Finally, the amend solution of the turbine rotor was proposed, thus the problem of excessive sloshing in turbine coupler was effectively solved. The research results have certain reference significance for the same type of turbine units.

关 键 词：汽轮机 晃度超差 检修方法 

分 类 号：TK266[动力工程及工程热物理—动力机械及工程]