STRUCTURAL ANALYSIS OF MOP ROTOR FOR 1000MW STEAM TURBINE BASED ON FSI
Main oil pump (MOP) is one of most important equipments for steam turbine unit. In order to ensure safety, the mechanical design of a MOP is conditioned by the static and dynamic characteristics of the rotor that is usually estimated by a simplified computational model. Nevertheless, the rotor has complex boundary conditions that are difficult to include in the computational model. One of these boundary conditions is the high oil pressure distribution on the impeller, which can modify considerably the natural frequencies of the rotor and meanwhile affects stress and deformation of the rotor. In order to more accurately analyze this effect on a MOP rotor of 1000MW steam turbine, a numerical simulation was carried out by approach of FSI analysis. The rotor was numerically simulated and the static structural and rotor dynamic response analysis were done both in air and in oil. It also shows that the mode shapes in oil are similar to those in air, and the presence of oil reduces considerably the natural frequencies while the dampings are increased. The methodology used in this investigation has been proved to be valid, so that it can be extended to study the static and dynamic behavior of any other pump rotor presenting similar geometrical characteristics.
main oil pump fluid-solid Interaction rotor dynamics analysis impeller
Lai Xide Zhang Weibin Yan Biao He Xianfu Wang Jianlu Liu Weilong
School of Energy & Environment, Xihua University, Chengdu, Sichuan, PRC, 610039 Dongfang steam turbine Co.Ltd.,Deyang, Sichuan, PRC, 618000
国际会议
The Fifth International Conference on VETOMAC-V(第五届振动工程及机械技术国际会议)
武汉
英文
257-264
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）