| 丙烯制冷压缩机的防喘振控制 |
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| 引用本文： | 沈朝霞,李映池. 丙烯制冷压缩机的防喘振控制[J]. 自动化技术与应用, 2011, 30(2): 60-62 |
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| 作者姓名： | 沈朝霞 李映池 |
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| 作者单位： | 1. 沈阳工业大学工程学院,辽宁,辽阳,111003
2. 中国石油辽阳石化公司烯烃厂,辽宁,辽阳,111003 |
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| 摘 要： | 中国石油辽阳石化分公司烯烃厂裂解装置扩能200Kt/a后更换了一台丙烯制冷压缩机,工作点和介质状态的变化会使压缩机发生喘振,喘振是必须避免的现象,该台压缩机的喘振控制系统采用开环和闭环结合变极限的控制方式,当实际入口流量距喘振的极限点较远时采用闭环PI控制,否则切断闭环输出,控制器立即采用阶跃式的输出迅速打开防喘振控制...
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| 关 键 词： | 丙烯制冷压缩机 喘振 变极限 控制 |
Anti-Surge Control for Propylene Refrigeration Compressor |
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| SHEN Zhao-xia,LI Ying-chi. Anti-Surge Control for Propylene Refrigeration Compressor[J]. Techniques of Automation and Applications, 2011, 30(2): 60-62 |
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| Authors: | SHEN Zhao-xia LI Ying-chi |
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| Affiliation: | SHEN Zhao-xia1,LI Ying-chi2(1.Engineering College of Shenyang University of Technology,Liaoyang 111003 China,2.Olefin Factory of PetroChina Liaoyang Petrochemical Company,Liaoyang 111003 China) |
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| Abstract: | a propylene refrigeration compressor is replaced in Olefin Factory of PetroChina Liaoyang Petrochemical Company after 200Kt/a ethylene are enlarged.The change of working point or condition can cause surge,it should be avoied.An open loop and closed loop control mode is combinated together and controller's establishment value is variable.When the actual entry flow is far apart from the surge limiting point,the closed loop PI control is used,otherwise cut-off closed loop and the step-like output is used in co... |
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| Keywords: | propylene refrigeration compressor surge variable limit control |
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