Working characteristic modeling and analysis for single screw compressor with multicolumn envelope meshing pair

doi:10.11949/j.issn.0438-1157.20160718

CIESC Journal ›› 2017, Vol. 68 ›› Issue (1): 215-222.DOI: 10.11949/j.issn.0438-1157.20160718

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Working characteristic modeling and analysis for single screw compressor with multicolumn envelope meshing pair

WANG Zengli¹, SHEN Yingfeng¹, WANG Zhenbo¹, WANG Jun¹, FENG Quanke²

1 College of Chemical Engineering, China University of Petroleum, Qingdao 266580, Shandong, China;
2 School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China

Received:2016-05-24 Revised:2016-08-24 Online:2017-01-05 Published:2017-01-05
Contact: 10.11949/j.issn.0438-1157.20160718
Supported by:
supported by China Postdoctoral Science Foundation (2015M572094), Qingdao Postdoctoral Sponsored Project (2015232) and Special Funding for Postdoctoral Innovation Project in Shandong Province (201603048).

多圆柱复合包络型面单螺杆压缩机工作特性建模及分析

王增丽¹, 申迎峰¹, 王振波¹, 王君¹, 冯全科²

1 中国石油大学(华东)化学工程学院, 山东青岛 266580;
2 西安交通大学能源与动力工程学院, 陕西西安 710049

通讯作者: 王增丽
基金资助:
中国博士后科学基金项目（2015M572094）；青岛市博士后资助项目（2015232）；山东省博士后创新项目专项资金项目（201603048）。

Abstract

Abstract:

The multicolumn envelope meshing pair(MEMP) is the important factor that affects the performance of single screw compressor due to its complex three-dimensional structure.In order to study the working characteristic of the single screw compressor with MEMP, a geometric features numerical calculation model is set up.By using this mathematical model, the effects of the MEMP and the straight line envelope meshing pair(LEMP) on the geometric features and the thermal dynamic performances are compared.Analysis results show that the use of the MEMP makes the actual star-wheel tooth width changing along with the star-wheel angle larger than that of the star-wheel with LEMP.Affected by the change of star-wheel tooth width, the working chamber volume of the compressor with MEMP will increase, the cavity internal pressure will decrease at the same star-wheel angle, and the largest base volume will be increased 5.2%.The closed spiral will be closer to the inlet side and the exhaust orifice spiral will be closer to the exhaust end for the compressor with MEMP which will lead to the delay of the exhaust process and more flow resistance losses.All analysis results obtained can provide the theory basis for optimum design of the single screw compressor with multicolumn envelope meshing pair.

Key words: multicolumn envelope meshing pair, compressor, working characteristic, numerical analysis, model

摘要：

多圆柱复合包络型面具有复杂的三维空间结构，是影响单螺杆压缩机性能的重要因素。为了研究多圆柱复合包络型面单螺杆压缩机的工作特性，建立了多圆柱复合包络型面压缩机的几何特性数值分析模型，利用上述模型，对比分析了多圆柱复合包络型面和单直线包络型面对单螺杆压缩机几何特性及热力学性能的影响。结果表明：多圆柱复合包络型面的采用使得实际星轮齿宽会随星轮转角的变化而变化，且均大于单直线型面星轮齿宽；受星轮齿宽变化的影响，任意星轮转角位置处，多圆柱复合包络型面单螺杆压缩机工作腔容积增大，最大基圆容积增大5.2%，工作腔内部压力减小。多圆柱复合包络型面单螺杆压缩机封闭螺旋线更靠近进气端，排气孔口起始位置更靠近排气端，导致排气过程延迟，排气过程流动阻力损失增加。通过上述工作，可为新型多圆柱复合包络型面单螺杆压缩机的设计及结构优化提供理论依据。

关键词: 多圆柱复合包络型面, 压缩机, 工作特性, 数值分析, 模型

CLC Number:

TH45

WANG Zengli, SHEN Yingfeng, WANG Zhenbo, WANG Jun, FENG Quanke. Working characteristic modeling and analysis for single screw compressor with multicolumn envelope meshing pair[J]. CIESC Journal, 2017, 68(1): 215-222.

王增丽, 申迎峰, 王振波, 王君, 冯全科. 多圆柱复合包络型面单螺杆压缩机工作特性建模及分析[J]. 化工学报, 2017, 68(1): 215-222.

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Working characteristic modeling and analysis for single screw compressor with multicolumn envelope meshing pair

多圆柱复合包络型面单螺杆压缩机工作特性建模及分析

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