蒸汽喷射涡旋压缩机喷射口位置和结构的优化研究  

Optimization Study of Injection Port Position and Structure of Steam Injection Scroll Compressor

作　　者：刘兴旺[1] 王龙[1] 刘晓明 李庚泽 刘国君 LIU Xing-wang;WANG Long;LIU Xiao-ming;LI Geng-ze;LIU Guo-jun(School of Petrochemical Engineering,Lanzhou University of Technology;State Key Laboratory of Compressor Technology)

机构地区：[1]兰州理工大学石油化工学院 [2]压缩机技术国家重点实验室

出　　处：《化工机械》2025年第1期60-67,83,共9页Chemical Engineering & Machinery

基　　金：压缩机技术国家重点实验室(压缩机技术安徽省实验室)开放基金项目(批准号:SKL-YSJ202110)资助的课题。

摘　　要：针对冬季工况下热泵系统中涡旋压缩机性能衰减问题,提出了互连通喷射口结构,采用数值模拟方法对不同喷射口位置和结构进行研究。通过FLUENT软件建立了蒸汽喷射涡旋压缩机网格模型,模拟了4种喷射口位置下涡旋压缩机的非稳态过程,研究了喷射流对涡旋压缩机内部流场的影响。对比分析表明,喷射口位置越远离排气口,喷射质量越大,COP值越高;喷射口位置越靠近排气口,排气温度越低,缓解欠压缩的效果最好。当采用互连通喷射口时,压缩机出口质量流量增加了16%,排气温度降低了15 K,喷射流在涡旋腔体底部冲击压力减弱,涡流数量减少。Aiming at the performance degradation of scroll compressor in heat pump system in winter,an interconnected injection port structure was proposed and different injection port positions and structures were studied through the numerical simulation,including making use of FLUENT software establish the grid model for the steam jet scroll compressor to simulate the unsteady process of scroll compressor under four injection port positions and investigate the influence of jet flow on the scroll compressor’s internal flow field.Comparative analysis shows that,the farther the injection port locates away from the exhaust port,the greater the injection mass and the higher the COP.The closer the injection port stays to the exhaust port,the lower the exhaust temperature is,and the best effect of relieving under compression is achieved.When interconnected injection ports are used,the mass flow rate at the outlet of the compressor can be increased by 16%,and the exhaust temperature decreased by 15 K,the impact pressure of the jet at the bottom of the scroll cavity decreases,including the number of swirls.

关 键 词：热泵系统 涡旋压缩机 数值模拟 喷射口位置 喷射口结构 

分 类 号：TH45[机械工程—机械制造及自动化]