一种用于离心压缩机转子稳定性控制的电磁阻尼器设计及应用
|
摘要
为提升转子稳定性,解决流程工业对高参数(高流量、高压比)压缩机的需求,针对密封力会降低系统稳定性的情况,在转子的解析模型中引入交叉刚度项,进行了转子失稳的理论分析,并指出了其失稳的机理和抑制失稳的方法;基于抑制失稳的机理,设计了反向交叉刚度控制和主动阻尼控制两种控制策略。设计了用于控制的电磁阻尼器,理论预测并实验标定了其电磁力性能参数。搭建了柔性转子稳定性控制的实验台,模拟制造干扰的交叉刚度力使得转子出现低频并进入濒临失稳状态;采用反向交叉刚度和主动阻尼的控制策略进行了稳定性控制实验,结果表明两种方法均能有效消除转子失稳时的分频振动响应。
This article focus on improving the stability of rotors,in order to meet the demand for high parameter( large flow and high pressure ratio) centrifugal compressors in the processing industry. Since sealing force will reduce the stability of the system,cross stiffness was introduced into the analytical model of the rotor. A theoretical analysis of rotor instability has been carried out and the principle of instability and the method of restraining instability are proposed. Based on the principle of restraining instability,two control strategies have been designed,namely reverse cross stiffness control and active damping control. An electromagnetic damper has been designed,so that the electromagnetic force performance can be predicted theoretically and calibrated by experiment. A flexible rotor test rig for stability control has also been built and used to simulate the cross stiffness force which makes the rotor unstable. Control experiments using the reverse cross stiffness control strategy and active damping control strategy have been carried out. The results show that the two methods can effectively eliminate the vibration response of the rotor when the rotor is unstable. The electromagnetic damper designed in this paper has high reliability and adjustable damping force,which can provide a solution for the stability control of the compressor rotor.
This article focus on improving the stability of rotors,in order to meet the demand for high parameter( large flow and high pressure ratio) centrifugal compressors in the processing industry. Since sealing force will reduce the stability of the system,cross stiffness was introduced into the analytical model of the rotor. A theoretical analysis of rotor instability has been carried out and the principle of instability and the method of restraining instability are proposed. Based on the principle of restraining instability,two control strategies have been designed,namely reverse cross stiffness control and active damping control. An electromagnetic damper has been designed,so that the electromagnetic force performance can be predicted theoretically and calibrated by experiment. A flexible rotor test rig for stability control has also been built and used to simulate the cross stiffness force which makes the rotor unstable. Control experiments using the reverse cross stiffness control strategy and active damping control strategy have been carried out. The results show that the two methods can effectively eliminate the vibration response of the rotor when the rotor is unstable. The electromagnetic damper designed in this paper has high reliability and adjustable damping force,which can provide a solution for the stability control of the compressor rotor.
引文
[1]Bidaut Y,Baumann U,Al-Harthy S M H.Rotordynamic stability of a 9500 psi reinjection centrifugal compressor equipped with a hole pattern seal-measurement versus prediction taking into account the operational boundary conditions[C]∥Proceedings of 38th Turbomachinery Symposium.College Station,USA,2009:251-260.
[2]Baumann U.Rotordynamic stability tests on high-pressure radial compressors[C]∥Proceedings of 28th Turbomachinery Symposium.College Station,USA,1999:115-123.
[3]Blanco Ortega A,Beltrán Carbajal F,Silva Navarro G,et al.Active vibration control of a rotorbearing system based on dynamic stiffness[J].Revista Facultad de Ingeniería Universidad de Antioquia,2010(55):125-133.
[4]顾仲权,马扣根,陈卫东.振动主动控制[M].北京:国防工业出版社,1997.Gu Z Q,Ma K G,Chen W D.Active vibration control[M].Beijing:National Defence Industry Press,1997.(in Chinese)
[5]寇宝泉,金银锡,张赫,等.电磁阻尼器的发展现状及应用前景[J].中国电机工程学报,2015,35(12):3132-3143.Kou B Q,Jin Y X,Zhang H,et al.Development and application prospects of the electromagnetic damper[J].Proceedings of the CSEE,2015,35(12):3132-3143.(in Chinese)
[6]刘迎澍,黄田.磁悬浮轴承研究综述[J].机械工程学报,2000,36(11):5-9.Liu Y S,Huang T.Survey of the research of magnetic bearings[J].Chinese Journal of Mechanical Engineering,2000,36(11):5-9.(in Chinese)
[7]蒋启龙,连级三.电磁轴承及其应用研究综述[J].重庆大学学报:自然科学版,2004,27(7):146-151.Jiang Q L,Lian J S.Summary of magnetic bearing and application research[J].Journal of Chongqing University:Natural Science,2004,27(7):146-151.(in Chinese)
[8]蒋科坚,祝长生.基于不平衡识别的主动电磁轴承转子系统自动平衡[J].振动工程学报,2009,22(6):559-564.Jiang K J,Zhu C S.Auto balance of active magnetic bearings for rotor support system by means of unbalance identification[J].Journal of Vibration Engineering,2009,22(6):559-564.(in Chinese)
[9]蒋科坚,祝长生.主动电磁轴承转子系统自适应不平衡补偿控制[J].浙江大学学报:工学版,2011,45(3):503-509.Jiang K J,Zhu C S.Adaptive unbalance compensation control of active magnetic bearing supporting rotor system[J].Journal of Zhejiang University:Engineering Science,2011,45(3):503-509.(in Chinese)
[10]左从杨.用于振动控制的电磁阻尼器若干问题的研究[D].南京:南京航空航天大学,2012.Zuo C Y.Research on active magnetic damper for vibration control[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2012.(in Chinese)
[2]Baumann U.Rotordynamic stability tests on high-pressure radial compressors[C]∥Proceedings of 28th Turbomachinery Symposium.College Station,USA,1999:115-123.
[3]Blanco Ortega A,Beltrán Carbajal F,Silva Navarro G,et al.Active vibration control of a rotorbearing system based on dynamic stiffness[J].Revista Facultad de Ingeniería Universidad de Antioquia,2010(55):125-133.
[4]顾仲权,马扣根,陈卫东.振动主动控制[M].北京:国防工业出版社,1997.Gu Z Q,Ma K G,Chen W D.Active vibration control[M].Beijing:National Defence Industry Press,1997.(in Chinese)
[5]寇宝泉,金银锡,张赫,等.电磁阻尼器的发展现状及应用前景[J].中国电机工程学报,2015,35(12):3132-3143.Kou B Q,Jin Y X,Zhang H,et al.Development and application prospects of the electromagnetic damper[J].Proceedings of the CSEE,2015,35(12):3132-3143.(in Chinese)
[6]刘迎澍,黄田.磁悬浮轴承研究综述[J].机械工程学报,2000,36(11):5-9.Liu Y S,Huang T.Survey of the research of magnetic bearings[J].Chinese Journal of Mechanical Engineering,2000,36(11):5-9.(in Chinese)
[7]蒋启龙,连级三.电磁轴承及其应用研究综述[J].重庆大学学报:自然科学版,2004,27(7):146-151.Jiang Q L,Lian J S.Summary of magnetic bearing and application research[J].Journal of Chongqing University:Natural Science,2004,27(7):146-151.(in Chinese)
[8]蒋科坚,祝长生.基于不平衡识别的主动电磁轴承转子系统自动平衡[J].振动工程学报,2009,22(6):559-564.Jiang K J,Zhu C S.Auto balance of active magnetic bearings for rotor support system by means of unbalance identification[J].Journal of Vibration Engineering,2009,22(6):559-564.(in Chinese)
[9]蒋科坚,祝长生.主动电磁轴承转子系统自适应不平衡补偿控制[J].浙江大学学报:工学版,2011,45(3):503-509.Jiang K J,Zhu C S.Adaptive unbalance compensation control of active magnetic bearing supporting rotor system[J].Journal of Zhejiang University:Engineering Science,2011,45(3):503-509.(in Chinese)
[10]左从杨.用于振动控制的电磁阻尼器若干问题的研究[D].南京:南京航空航天大学,2012.Zuo C Y.Research on active magnetic damper for vibration control[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2012.(in Chinese)
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |