双螺杆膨胀机的发电特性试验研究  

Experimental Study on Electricity Output Characteristics of Process Gas Twin Screw Expander

作　　者：徐明照[1] 杨小强[1] 刁安娜[1] 杨毅[1] 

机构地区：[1]中国船舶重工集团公司第七一一研究所,上海200072

出　　处：《热能动力工程》2016年第10期59-62,126,共4页Journal of Engineering for Thermal Energy and Power

基　　金：上海市闵行区人才发展专项资金资助项目(QYPZJ-KY-2014-001)

摘　　要：针对用螺杆膨胀机取代工业减温减压装置的问题进行了理论分析和试验研究,对欠膨胀过程建立了理论模型,经过理论计算及与试验结果的对比和分析,结果表明:欠膨胀过程会导致发电量损失,且损失量随着进气压力的升高而增大;由于换热、泄露等因素的影响,实际的膨胀过程为偏向等温膨胀的多变过程;在试验工况内,当进气压力高于0.238 MPa后,发电量误差最大为18%,最小为10%,理论计算值与试验值吻合较好。The problem of using the screw expander to replace the industry pressure and temperature reducing device was theoretically analyzed and experimentally investigated. Thermodynamic model of the under-expansion working process in twin-screw expander was proposed in this paper. Through the analysis of the theoretical and experimental data,the results indicate that under-expansion can lead to the reduction in electrical generation,and the losses increases with the suction pressure. Due to the influence of heat exchange and leakage,the actual expansion process is close to isothermal expansion. The theoretical calculation results agree reasonably well with the experimental data when the suction pressure is up to 0. 238 MPa,and the maximum and minimum deviations are 18% and 10%,respectively.

关 键 词：减温减压 螺杆膨胀机 欠膨胀 

分 类 号：TK05[动力工程及工程热物理]