隔爆型电动执行机构箱体结合面间隙变化研究  

Study on the Gap Change of the Combination Surface of Flameproof Electric Actuator Box

作　　者：王成 张瑞 禹建勇 濮方成 WANG Cheng;ZHANG Rui;YU Jianyong;PU Fangcheng(Nanjing Sciyon Wisdom Technology Group Co. ,Ltd. ,Nanjing 211102,China;Jiangsu Thermal Process Intelligent Control Key Laboratory,Nanjing 211102,China)

机构地区：[1]南京科远智慧科技集团股份有限公司,江苏南京211102 [2]江苏省热工过程智能控制重点实验室,江苏南京211102

出　　处：《自动化仪表》2020年第8期20-23,29,共5页Process Automation Instrumentation

摘　　要：隔爆间隙是隔爆型电动执行机构的设计要点。试验测量多关注卸载后的变形,过程中间隙测量难度较大。针对这一问题,开展了考虑塑性变形阶段的弹塑性有限元分析,并进行了静压试验。采用SolidWorks simulation软件,模拟静压试验过程中止口结合面的弹塑性变形。试验结果表明,仿真与试验结果吻合较好。同时,仿真给出了试验中难以测量的水压加载过程中隔爆面间隙变化,弥补了静压试验难以获得该值的缺陷,证明了该执行机构满足隔爆标准要求,使仿真与试验能更好地结合。仿真获得的隔爆间隙可以更为直观、便捷地与隔爆标准对比,节约研发成本,缩短产品研发周期。该研究对隔爆型产品的设计及隔爆间隙研究具有一定参考意义。The flameproof gap is the focus of the flameproof electric actuator’s design.It’s difficult to measure the gap during the loading process while the experiment pays more attention to the deformation after unloading.To solve the problem,an elastoplastic finite element analysis was applied,along with a hydraulic pressure test being carried out.Adopting Solidworks simulation software,the elastoplastic deformation during the hydraulic pressure test was simulated.The results show that the simulation and the test results conformed well.The flameproof gap of surface during the hydraulic loading was given,which makes up for the difficulty of obtaining the value in experiment.It is more intuitive and convenient to prove whether the actuator meets the requirements of flameproof standards.Moreover,it improves simulation and experiment combination and shortens the product development cycle to save development cost.The study provides a reference for other flameproof product design and flameproof gaps study.

关 键 词：电动执行机构 隔爆 止口 隔爆间隙 静压试验 弹塑性 有限元分析 

分 类 号：TH123.3[机械工程—机械设计及理论]