三级有机工质离心透平气动性能研究  

The aerodynamic analysis on the three stages centrifugal turbine of forganic working fluid

作　　者：宋艳苹 刘海燕 黄典贵[2] SONG Yan-Ping;LIU Hai-Yan;HUANG Dian-Gui(School of Energy and Architectural Environment Engineering,Henan University of Urban Construction,Pingdingshan 467036,China;School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]河南城建学院能源与建筑环境工程学院,平顶山467036 [2]上海理工大学能源与动力工程学院,上海200093

出　　处：《四川大学学报（自然科学版）》2021年第4期110-116,共7页Journal of Sichuan University(Natural Science Edition)

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

摘　　要：以有机工质R123为工质,基于一维气动分析理论,设计了三级离心透平,并采用数值模拟方法研究了不同工况下的透平气动性能.结果表明:设计工况下,三级等叶高直叶片离心透平轮周效率可达到86.7%;在变工况条件下,离心透平轮周效率随着膨胀比的增大先增大后减小,离心透平各级的膨胀比、焓降和反动度等热力参数随着级组膨胀比的变化从高压级到低压逐级增大,最末级变化最大.Based on one dimensional aerodynamic analysis theory,a three-stage centrifugal turbine was designed by using R123 as working fluid.The aerodynamic performance of the centrifugal turbine was studied by numerical simulations.Numerical results showed that the wheel efficiency of the three-stage centrifugal turbine with equal blades and high straight blades can reach 86.7%under design conditions.Under the off-design conditions,the efficiency increases initially with increasing expansion ratio,reaches a maximum and then decreases.The thermal parameters such as expansion ratio,enthalpy drop and reaction degree of each stage of centrifugal turbine increase from high pressure stage to low pressure stage with the change of expansion ratio of each stage group,and the last stage changes the most.

关 键 词：离心透平 数值模拟 变工况 有机工质 

分 类 号：TK14[动力工程及工程热物理—热能工程]