涡旋膨胀机改造及试验性能研究  

Improvement and Performance Experiment of a Scroll Expander

作　　者：褚晓广[1,2] 张承慧[1] 李珂[1] 孔英[3] 荆业飞[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061 [2]曲阜师范大学电气信息与自动化学院,山东日照276826 [3]济宁医学院医学信息工程学院,山东日照276800

出　　处：《西安交通大学学报》2014年第1期37-41,100,共6页Journal of Xi'an Jiaotong University

基　　金：国家"863计划"资助项目(2009AA05Z212);国家自然科学基金重大国际(地区)合作项目(61320106011);曲阜师范大学学校级基金资助项目(2013kj009);曲阜师范大学博士科研启动基金资助项目

摘　　要：针对涡旋膨胀机普遍存在输出功率和气动转化效率相对较低的问题,提出了基于涡旋体型线修正和进口面积调整的2种涡旋膨胀机结构改造方法。以具有圆弧加直线型线结构的涡旋压缩机为例,采用圆渐开线加过渡直线的组合型线修正方法,结合进口面积调整原则完成了涡旋膨胀机改造。试验结果表明:改造后样机全效率最高可达53%,输出功率随供气压力升高而增大,其中550kPa供气压力时输出功率可达780W;相同工况下,进口面积增大30%,输出功率增幅可达100W,全效率提高10%。该结果验证了涡旋膨胀机结构改造方法的有效性,为涡旋膨胀机结构设计和实用化奠定了理论和实践基础。The scroll profile modification and the inlet port area regulation were proposed to improve power output and the pneumatic conversion efficiency of a scroll expander. The circle involute-line profile modification combining with the inlet port regulation was adopted to modify a scroll compressor with the circle arc line profile. The experiment results show that the whole efficiency of the modified scroll expander would be up to 53%. The power output increased with the supply pressure, reaching 780 W at the supply pressure of 550 kPa. Under the same condition, the power output increased by 100 W and the whole efficiency rose by10% when the inlet port area increased by 30%. These results confirm the feasibility of the improvement method. The present method may be useful for the structure design of scroll expanders.

关 键 词：涡旋膨胀机 结构改造 型线修正 全效率 

分 类 号：TH45[机械工程—机械制造及自动化]