Research on the piston precise electromagnetic centering of labyrinth-piston compressor

作     者：Cheng, Junming Zhang, Meimei Liu, Zhan Feng, Quanke Zeng, Xiangjun 

作者机构：Xi An Jiao Tong Univ Sch Energy & Power Xian Peoples R China Xi An Jiao Tong Univ Sch Elect Engn Xian Peoples R China 

出 版 物：《PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY》 (Proc. Inst. Mech. Eng. Part A J. Power Eng.)

年 卷 期：2016年第230卷第4期

页      面：388-401页

核心收录：

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 0802[工学-机械工程] 

主　　题：Labyrinth piston compressor centering technology multi-loop control eccentric running electromagnetic centering system 

摘      要：In labyrinth piston compressor, the precise centering of the piston is the most important prerequisite to realize the labyrinth seal and ensure the compressor running safety. However, the piston suffers very large periodically varying loads caused by the gas force and the inertia force, which lead to the eccentrically running of the piston in cylinder. Under this condition, the leakage of the labyrinth piston compressor will be intensified, and the risk of the friction between piston and cylinder wall will increase. In order to realize the piston precise centering, in this paper, an electromagnetic centering system is introduced including the principle, structure, and application. In order to realize the piston precise electromagnetic centering outside of the cylinder, the through-piston rod is adopted. And the guide bearing can be removed. Thus, the current cantilever structure for the piston centering will be replaced with the simply supporting structure. More importantly, this technology can also be used for the traditional large reciprocating compressor, and thereby, the piston rings, packing and other wearing parts can be removed as well.