水平对置式离心压缩机轴向力分析与测试研究
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摘要
由于轴向力的存在,离心压缩机的转子组将会产生轴向位置偏移,从而影响压缩机的稳定运行,甚至影响整个机组的安全,所以准确分析和有效消减轴向力的影响是压缩机结构设计的关键问题。针对某型号采用水平对置结构和设置轮盘平衡圈的离心式制冷压缩机,从理论上分析了不同工况下转子组轴向力情况,并进行了理论计算与测试试验对比分析。结果表明:理论计算结果与测试试验数据吻合较好,所采用的理论计算分析方法可作为一种有效的设计计算方法运用;水平对置式离心压缩机的轴向力能够很好地自我平衡,在不增加推力平衡装置等轴上零件的情况下,使转子组总轴向力较小。
Because of the axial force, the rotor group of centrifugal compressor will have an axial position deviation, which will affect the stable operation of the compressor, and even the safety of the whole unit. Therefore, accurate analysis and effective reduction of the influence of axial force are the key issues of compressor structure design. Taking a centrifugal refrigeration compressor with horizontally opposed structure and balance ring as an example, analyses the effect of axial force on the rotor group under different conditions theoretically, and compares the theoretical calculation and experimental results. The final test results show that the theoretical calculation results are in good agreement with the test data, which proves the validity of the theoretical analysis method. Axial force of the horizontally opposed centrifugal compressor can balance itself well, so that the total axial force of the rotor group is smaller without adding the axial parts such as the thrust balancing device.
Because of the axial force, the rotor group of centrifugal compressor will have an axial position deviation, which will affect the stable operation of the compressor, and even the safety of the whole unit. Therefore, accurate analysis and effective reduction of the influence of axial force are the key issues of compressor structure design. Taking a centrifugal refrigeration compressor with horizontally opposed structure and balance ring as an example, analyses the effect of axial force on the rotor group under different conditions theoretically, and compares the theoretical calculation and experimental results. The final test results show that the theoretical calculation results are in good agreement with the test data, which proves the validity of the theoretical analysis method. Axial force of the horizontally opposed centrifugal compressor can balance itself well, so that the total axial force of the rotor group is smaller without adding the axial parts such as the thrust balancing device.
引文
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[5] 李荣荣.离心式压缩机轴向力分析及平衡与消除措施[J].当代化工,2013,42(6):773- 774
[6] 闻苏平,朱报桢,苗勇淼.高压离心压缩机轴向力计算[J].西安交通大学学报,1998,32(11):63- 67
[7] 钟瑞兴,张治平,陈玉辉,等.离心压缩机轴向力计算与试验研究[J].制冷,2016,35(1):16- 21
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[9] 刘士学,方先清.透平压缩机强度与振动[M].西安:西安交通大学,1996:194- 198
[2] 吴艳辉,楚武利,卢新根.间隙区域的流动结构对压气机气动性能的影响[J].工程热物理学报,2006,27(6):950- 952
[3] 闻苏平,阎宏,张楚华.离心叶轮外侧间隙内的流动计算[J].流体机械,2004,32(6):13- 15
[4] JAPIKSE D.Centrifugal compressor design and performance[M].Billings:Concepts ETL Inc,1996:1- 26
[5] 李荣荣.离心式压缩机轴向力分析及平衡与消除措施[J].当代化工,2013,42(6):773- 774
[6] 闻苏平,朱报桢,苗勇淼.高压离心压缩机轴向力计算[J].西安交通大学学报,1998,32(11):63- 67
[7] 钟瑞兴,张治平,陈玉辉,等.离心压缩机轴向力计算与试验研究[J].制冷,2016,35(1):16- 21
[8] 高田秋一.离心式制冷机[M].耿惠彬,译.北京:机械工业出版社,1985:220- 224
[9] 刘士学,方先清.透平压缩机强度与振动[M].西安:西安交通大学,1996:194- 198