井下双位自锁式电磁铁参数优化及性能分析  

Performance analysis and parameter optimization of down-hole bi-position self locking electromgnet

作　　者：汪兴明[1] 张剑秋[2] 王强[1,3] WANG Xing-ming ZHANG Jian-qiu WANG Qiang(College of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China Shanghai Shipyard Shipping Co, Ltd, China State Shipbuilding Corporation, Shanghai 202164, China Fenghuo Machinery Factory, China Aerospace Science and Technology Corporation, Chengdu 611130, China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]中国船舶工业集团公司上海船厂船舶有限公司,上海202164 [3]中国航天科技集团公司烽火机械厂,四川成都611130

出　　处：《磁性材料及器件》2017年第3期26-31,共6页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(51274171);四川省科技计划项目(2015SZ0003)

摘　　要：针对井下的恶劣工作环境,为了降低电磁阀能耗,提出了一种利用永磁体自锁的电磁阀。为了提高电磁阀在工作过程中的性能,利用Ansoft Maxwell软件建立电磁铁的分析模型,并对模型进行有限元分析。分别考虑电磁铁衔铁在不同位置、永磁体不同长度情况下,电磁铁的自锁性能和抗振动的能力。针对不同长度的线圈以及衔铁的不同位置,对电磁铁的换向能力进行有限元分析,得到合理的线圈长度。仿真结果分析表明,井下自锁式电磁铁增加永磁体的长度有助于衔铁抗振动能力的提高,但会削弱电磁铁的换向能力。综合考虑上述因素,结合电磁铁的实际尺寸,得到永磁体长度和线圈长度的优化设计参数分别为3mm和21mm。Aiming at tough environment in the oil and gas well, we proposed a down-hole self-lock solenoid with permanent magnet to reduce power consumption. In order to enhance working performance, the analysis model was established with Ansoft Maxwell software and was simulated by finite element method （FEM）. The electromagnet’s vibration resistance was analyzed for different length of permanent magnet and at different position of armature. The switch capablity is analyzed for different length of permanent magnet and at different position of armature. Finally, the reasonable length of coil is obtained. The simulation result indicates that longer permanent magnet would increase vibration resistance and decrease the switch capablity. Considering the actual size of electromagnet, the optimization length of permanent magnet and coil are 3mm and 21mm, respectively.

关 键 词：油气井工程 电磁铁 有限元分析法 双位自锁 优化设计 

分 类 号：TM571[电气工程—电器]