一种适用于有机朗肯循环的球形滚珠膨胀机  

Spherical Ball Expander Suitable for Organic Rankine Cycle

作　　者：胡惠惠 欧阳新萍[1] 侯庆亚 白桦 HU Huihui;OUYANG Xinping;HOU Qingya;BAI Hua(School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《机械科学与技术》2022年第2期172-177,共6页Mechanical Science and Technology for Aerospace Engineering

摘　　要：针对目前应用于有机朗肯循环(ORC)的容积型小容量膨胀机结构复杂、难以应用推广的现状,提出了一种新型球形滚珠膨胀机。其组合了滚动转子式膨胀机和往复活塞式膨胀机的部分特征及优点,结构简单、零件数少、制作方便、运动平衡性好。介绍了球形滚珠膨胀机的工作原理和运行过程以及部分主要零件的设计,并在此基础上设计了一种区别于常规进气结构的优化方案,取消了进气阀,减小了流动损失和阀门振动噪声。针对某一工况设计了膨胀机尺寸,并进行了润滑设计和泄漏分析以及容积效率估算。In view of the present situation that the volumetric small-capacity expander currently used in the organic Rankine cycle has a complicated structure and is difficult to apply and promote,a novel spherical rolling rotor expander is proposed,which combines some features and advantages of the rolling rotor expander and the reciprocating piston expander.It has the features of simple construction,few components,convenient manufacturing and good balance of movement.By introducing the working principle and running process of spherical ball expander and the design of some main parts,an optimization scheme is designed which is different from the conventional intake structure.The intake valve is cancelled,the flow loss and valve vibration noise is reduced.Finally,the size of the expander was designed for a certain working condition,and the lubrication design,leakage analysis and volumetric efficiency estimation were carried out for this expander.

关 键 词：容积型膨胀机 球形滚珠 进气结构优化 有机朗肯循环 

分 类 号：TB653[一般工业技术—制冷工程]