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首页> 外文期刊>Sensing and imaging >Development of a Numeric Method to Validate the Reliability Improvement of Safety Critical Valves During Operation Through Online Monitoring Implementation
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Development of a Numeric Method to Validate the Reliability Improvement of Safety Critical Valves During Operation Through Online Monitoring Implementation

机译：通过在线监控实现，在操作期间验证安全临界阀的可靠性改进的数字方法

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摘要

Online valve monitoring, also called “ValveWatch,” is a state-of-the-art method for improving the reliability of safety critical valves during operation. This wellknown method has been used for almost two decades to reveal the possible failures of valves, actuators and control systems. This paper reviews some of the existing literature about ValveWatch technology to provide more detailed information about this online monitoring approach and its benefits. The possible causes and effects of failures associated with safety critical valves based on the existing literature are identified and summarized in this paper. Safety critical valves mainly include Emergency Shut Down and Process Shut Down (PSD) valves connected to Process Shut Down (PSD) systems. Three types of sensors that comprise part of the ValveWatch system will be identified and explained in this paper: the stain gauge, the dynamic pressure gauge and the static pressure gauge on the actuator. The function and logic of these three sensors are explained in this paper. All of the problems associated with valves, actuators and control system are identified and listed in a table and the probability of detecting these failures through visual inspection as well as online monitoring is assessed. A method of utilizing equations to calculate the probability of failure detection for valves, actuators, control system and the whole assembly through visual inspection as well as using sensors is developed. Additionally, the methodology given in functional safety and International Electrotechnical Commission 61,508 to calculate Diagnosis Coverage is used in this paper, and future research work to address condition monitoring for pressure safety valves and check valves is proposed. A Separate research is required to improve the reliability of the ValveWatch system.
机译：在线阀门监测，也称为“阀门观察”，是一种最先进的方法，用于改善操作期间安全临界阀的可靠性。这种良好的方法已经使用了近二十年来揭示阀门，执行器和控制系统的可能故障。本文评论了一些关于ValvePatch技术的现有文献，提供有关该在线监测方法及其优势的更详细信息。基于现有文献的基于现有文献的可能原因和故障的可能原因和效果是在本文中求出的。安全临界阀门主要包括紧急关闭和处理关闭（PSD）阀门，连接到处理关闭（PSD）系统。本文将识别和解释包括一部分阀门抽头系统的三种类型的传感器：脱脂量表，动态压力表和致动器上的静压计。本文解释了这三种传感器的功能和逻辑。与阀门，致动器和控制系统相关的所有问题都在表中识别并列出了通过视觉检查检测这些故障的概率以及在线监测进行了评估。开发了一种利用方程来计算阀门，致动器，控制系统和整个组件的故障检测概率，通过目视检查以及使用传感器的概率。此外，在本文中使用了功能安全和国际电工委员会61,508的方法，提出了解决压力安全阀和止回阀状态监测的未来研究工作。需要单独的研究来提高阀门抽毒系统的可靠性。

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