摘要
根据屏蔽式电动闸阀的实际工况,为了使闸板与阀座可靠密封,闸板、阀杆满足强度要求,提出了电动闸阀的整体设计方案,确定了闸板、阀杆的结构及材料,优化了闸板楔角,使开关阀门阀杆受力更加均衡。并根据螺母与丝杠间的最大作用力,对阀杆和闸板的承载能力进行校核计算。为了控制电动闸阀在关闭瞬间作用于闸板的关闭力的大小,设计了限力矩摩擦离合器,实践证明限力矩摩擦离合器可有效控制闸板关闭力,防止关闭力过大,损坏闸板或使阀门无法开启。通过实际工况下设计实例的仿真分析和实验验证,证明了设计的屏蔽式电动闸阀的阀杆、闸板满足设计要求,设计总体方案可行。
According to the actual working conditions of the shielded electric gate valve,in order to make the gate and valve seat reliably sealed,the gate and the valve stem meet the strength requirements,the overall design of the electric gate valve is proposed,the structure and material of the gate and valve stem are determined,and the gate wedge angle is optimized,so that the force of the valve stem of the switch valve is more balanced.According to the maximum force between nut and screw,the bearing capacity of valve stem and gate is checked and calculated.In order to control the magnitude of closing force that the electric gate valve acts on the gate at the moment of closing,a torque-limiting friction clutch is designed.The practice has proved that the torque-limiting friction clutch can effectively control the closing force of the gate,prevent excessive closing force,damage the gate or make the valve unable to be opened.Through the simulation analysis and experimental verification of the design example under the actual working conditions,it is proved that the valve stem and gate of the designed shielded electric gate valve meet the design requirements,and the overall design scheme is feasible.
作者
韩勖
方恒晨
孙秋花
彭彦平
HAN Xu;FANG Hengchen;SUN Qiuhua;PENG Yanping(School of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian 116034, China;Dalian Sifang Motor-Pump Company Limited, Dalian 116045, China)
出处
《大连工业大学学报》
CAS
北大核心
2021年第3期202-207,共6页
Journal of Dalian Polytechnic University
基金
辽宁省教育厅科学研究一般项目(2017J007).
关键词
电动闸阀
阀杆
闸板
闸板楔角
electric gate valve
valve stem
gate
gate wedge angle
