单作用气动执行器增大扭力方法探究与应用  

Exploration and Application of Methods to Increase Torque in Single-acting Pneumatic Actuators

作　　者：朱志星 郭永新 于海军 Zhu Zhixing;Guo Yongxin;Yu Haijun(CNOOC(China)Co.Ltd.,Shenzhen Branch,Shenzhen,518000,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518000

出　　处：《石油化工自动化》2024年第1期85-87,共3页Automation in Petro-chemical Industry

摘　　要：单作用气动关断阀在失气时,依靠弹簧对阀门进行复位,而对于阀体为球型阀门的气动关断阀,如果扭力不足,很容易出现阀门卡阻现象,起不到应有的安全保护作用,存在很大的风险隐患。通过分析气动关断阀的内部结构,总结阀门卡阻故障原因,本着降本增效的理念,对比分析了3种增大执行器扭力的方法,在不改变原设计基础上,探究增大扭力的创新方案,提高关断阀安全可靠性。In the condition of air loss,single-acting pneumatic shut-off valve relies on the spring to reset the valve.For the pneumatic shutoff valve with a ball valve as valve body,if the torque is insufficient,the valve jam is easy to occur.The responsible security protection will not be achieved,there will be great potential risks.By investigating the internal structure of the pneumatic shut-off valve,the causes of valve jam is summarized.Based on the idea of reducing cost and increasing efficiency,three methods of increasing the torque of the actuator are compared and analyzed.The innovative scheme of increasing torque is explored to improve the safety and reliability of the shut-off valve under the base of without changing the original design.

关 键 词：关断阀 双弹簧 扭力 气动执行器 两位五通电磁阀 

分 类 号：TH138[机械工程—机械制造及自动化]