孔型阻尼密封在透平膨胀机喷嘴叶片上的应用  

The application of pass damping seal on the turbine expander nozzle blade

作　　者：赵以奎 李时明 王枭 陈启明 于跃平 常超 ZHAO Yikui;LI Shiming;WANG Xiao;CHEN Qiming;YU Yueping;CHANG Chao(State Key Laboratory of Compressor Technology,Anhui Province Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,China;Parker Hannifin Fluid Drive(Shanghai)Co.,Ltd.,Shanghai 201206,China)

机构地区：[1]合肥通用机械研究院有限公司压缩机技术国家重点实验室压缩机技术安徽省实验室,合肥230031 [2]派克汉尼汾流体传动(上海)有限公司,上海201206

出　　处：《流体机械》2022年第7期93-97,共5页Fluid Machinery

基　　金：安徽省重点研究与开发计划项目(1704a0902005);国机集团重大科技专项项目(SINOMAST-ZDZX-2017-01);国机集团国家级研发平台能力提升项目(2021010942);冶炼行业动设备远程故障诊断与健康预测(2018011574)。

摘　　要：针对透平膨胀机喷嘴叶片动静部件间隙流动损失问题,首先对喷嘴叶片膨胀比进行计算,并与实验数据进行对比,验证计算方法的准确性和可靠性,然后对加装孔型阻尼密封前后的喷嘴气动性能进行对比计算,结果表明,对于本文计算模型,加装孔型阻尼密封使得喷嘴叶片膨胀比提高1%,焓损失降低5%,且动静部件间隙减小50%后,喷嘴叶片膨胀比进一步提高1%,焓损失进一步下降5%。For the flow loss of clearance between moving and stationary parts of the turbine expander nozzle blade,first of all,the expansion ratio of the nozzle blade was calculated using CFD method,and compared with the experimental data to verify the accuracy and reliability of the calculation method,and then the aerodynamic performance of the nozzle before and after adding damping sealing groove nozzle was calculated and compared.The results show that for the calculation model herein,the expansion ratio is increased by 1%and enthalpy loss is decreased by 5%after adding the hole-pattern damper seal,and the expansion ratio of nozzle blade is further increased by 1%and enthalpy loss is further decreased by 5%after 50%reduction of the clearance between moving and stationary parts.

关 键 词：透平膨胀机 喷嘴 孔型阻尼密封 间隙 膨胀比 焓损失 

分 类 号：TH432[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]