部分进汽径流式透平推力评估方法研究  

Axial Thrust Calculation of Partial Admission Radial Inflow Turbine

作　　者：张晓丹[1] 平艳 钟主海[1] 范立华 王磊 ZHANG Xiaodan;PING Yan;ZHONG Zhuhai;FAN Lihua;WANG Lei(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

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：《东方汽轮机》2023年第3期19-24,共6页Dongfang Turbine

摘　　要：由于部分进汽径流透平内部存在进汽弧段和非进汽弧段,使得叶轮正面与背面的压力沿周向分布非常不均匀,这种不均匀性会对叶轮推力的计算带来很大困难。文章通过对部分进汽度对径流透平推力评估带来的影响进行研究,提出部分进汽径流透平的推力计算方法,使得在方案设计初期快速并相对精确地评估叶轮的推力情况,最大限度地消除部分进汽带来的推力误差,缩小推力范围,保证机组安全稳定运行。Due to partial admission in the radial turbine,the pressure distribution on the front and back face of the impeller has strong nonuniformity in the circumferential direction,which cause great difficulty to calculation of the impeller axial thrust.In this paper,influence of the partial admission on the axial thrust evaluation is studied,and the method for axial thrust calculation of partial admission radial turbine is proposed.Based on this method,the axial thrust of the partial admission radial inflow turbine is evaluated quickly and relatively accurately at the early stage of a project,and the errors of impeller axial thrust is minimized to ensure safe and stable operation of the turbine.

关 键 词：部分进汽度 径流透平 轴向推力 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]