气液执行机构本质安全和功能安全分析及应用

Analysis and Application of Intrinsic Safety and Functional Safety of the Gas over Oil Actuator

基于对长输天然气管道紧急切断保护的关键设备——气液执行机构的本质安全和功能安全进行分析,依据国内和国际上强制要求的规范和标准,结合实际应用特点,明确了气液执行机构在产品自身安全和实现现场安全保护两方面的关键要点和重要参数。介绍了气液执行机构部分行程测试功能在阀门维保和管线安全方面的作用,旨在对应用于国内长输天然气管道的气液执行机构的技术要求和安全运行提供参考。

Based on the analysis of the essential safety and functional safety of gas-liquid actuator,the key equipment for emergency cut-off protection of long-distance natural gas pipelines,the key points and important parameters of gas-liquid actuator in product safety and on-site safety protection are defined according to the domestic and international mandatory norms and standards,combined with practical application characteristics.The function of partial stroke test of gas-liquid actuator in valve maintenance and pipeline safety is introduced in order to provide reference for the technical requirements and safe operation of gas-liquid actuator used in domestic long-haul natural gas pipelines.