某汽轮给水泵机组卸载盘平衡机理研究及应用

Research and Application of Balance Mechanism on Unloading Disc for a Turbine-Driven Feed Pump Unit

某汽轮给水泵机组采用卸载盘平衡汽轮机及给水泵轴向推力,实际工程应用中出现过卸载盘磨损情况,基于卸载盘结构特点和工作原理,分析了卸载盘动态平衡的过程,采用CFD软件分析了卸载卸载盘与卸载盘环之间压力分布,得出机组轴向推力与推力间隙曲线,提出卸载盘防磨损措施,为卸载盘的设计制造及应用提供参考。

A turbine-driven feed pump unit using unloading disc to balance the axial thrust of turbine and pump,the unloading disc have been worn in engineering applications,based on the structure characteristics and working principle of the unloading disc,the dynamic equilibrium process was analyzed,pressure distribution of the unloading disc was analyzed by using CFD software,and the axial thrust and thrust clearance curve was obtained,this paper presented some measures to prevent the unloading disc from wearing down,it will provide a reference for the design,manufacture and application of the unloading disk.