有机工质离心透平叶轮的强度校核  

Strength check of centrifugal turbine impeller with organic working medium

作　　者：宋艳苹 刘海燕 SONG Yan-ping;LIU Hai-yan(School of Energy&Architectural Environment Engineering,Henan University of Urban Construction,Pingdingshan 467036,China)

机构地区：[1]河南城建学院,能源与建筑环境工程学院,河南平顶山467036

出　　处：《河南城建学院学报》2022年第1期59-65,共7页Journal of Henan University of Urban Construction

基　　金：上海市科委科研计划项目(17060502300);河南省重大科技攻关项目(192102310475);河南省高等学校重点科研项目(21A470001)。

摘　　要：针对一种新型的用于有机朗肯循环系统的离心透平,进行其强度校核。该离心透平的叶轮材料选用合金钢、铝合金和钛合金3种材料,分析了设计转速下气流力和离心力对叶轮强度的影响,并校核了破坏转速下的叶轮强度。结果显示:在设计转速下,离心力产生的最大等效应力远大于气流力产生的最大等效应力,说明对有机工质离心透平而言,气流力对叶轮强度的影响可以忽略。A new type of centrifugal turbine for organic Rankine cycle system was subjected to strength calibration.The impeller materials of this centrifugal turbine are alloy steel,aluminum alloy and titanium alloy.The influence of airflow force and centrifugal force on the strength of the impeller at the design speed is analyzed,and the strength of the impeller at the destruction speed is calibrated.The results show that the maximum equivalent force generated by centrifugal force is much larger than that generated by airflow force at the design speed,indicating that the effect of airflow force on the impeller strength can be neglected for the organic mass centrifugal turbine.

关 键 词：有机工质 离心透平 叶轮 应力分析 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]