孔板消减气流脉动的数值模拟及实验研究  

Numerical simulation and experimental research on orifice plate reducing gas pulsation

作　　者：宋辉辉[1] 韩省亮[1] 李永东[1] 程剑[1] 许丁[1] 

机构地区：[1]西安交通大学航天航空学院强度与振动教育部重点实验室,西安710049

出　　处：《应用力学学报》2011年第1期39-43,108-109,共5页Chinese Journal of Applied Mechanics

摘　　要：添加孔板是一种消减压缩机管道系统内气流脉动有效而简便的方法,尽管在工业生产中已被广泛应用,但是其设计和制作所需的各个参数尚处于靠经验取值的阶段。针对这种情况,首先阐述了孔板消减管道内气流脉动的机理;然后使用流体仿真计算软件Fluent建立了管道内气体的二维非稳定流动模型,计算了孔板对管道内气流的压力脉动的影响;并在数值模拟的基础上,搭建了往复式压缩机管道系统实验平台,在进气管线研究了孔板对气流脉动的消减作用。通过数值模拟和实验研究分析了孔板孔径比对气流脉动的影响,并指出选用恰当孔径比的孔板不仅能有效降低主管线和缓冲器至孔板段管线的压力脉动幅度而且对压缩机进口段管线内压力脉动同样具有良好的消减效果。As an effective and convenient way to reduce the gas pulsation in reciprocating compressor piping system,orifice plates have been widely adopted,but the various parameters required in design and production are usually empirical.In response,this paper firstly expounds the mechanism orifice plate to reduce gas pulsation in pipelines.With the fluid simulation software FLUENT,a two-dimensional model of compressor piping system is established for evaluating the pressure pulsation at different parts when orifice plates with different aperture ratio are employed in the piping system.Based on the simulation,the experimental platform of reciprocating compressor piping system is constructed to investigate the pressure pulsation at different parts of this piping system when orifice plates with different parameters fixed on the flange between buffer and compressor of import pipelines.The simulation and experiment investigation show that the orifice plate with appropriate aperture ratio enables to reduce the pressure pulse amplitude in the main pipeline and the pipelines between buffer and orifice plate effectively,and effects well on compressor inlet section.

关 键 词：气流脉动 孔板 数值模拟 FLUENT 

分 类 号：TE832[石油与天然气工程—油气储运工程]