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所在平台: Udemy |
课程主页: https://www.udemy.com/course/pressure-relief-valve-sizing-selection-asmeapi/
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课程名称：压力释放阀的选型与尺寸计算（ASME/API） 课程概述：本课程是我在chemengpro上工程培训库的一部分，分享工程师所需的工具、模板和额外材料。 第一章：压力释放装置简介 - 了解压力释放阀（PRVs）在工业系统中的作用； - 比较压力释放阀与破裂碟的优缺点及典型使用场景； - 学习系列释放装置的功能及何时需要双重保护。 第二章：释放装置的类型及其工作原理 - 探索不同类型的压力释放阀：弹簧加载、重锤加载、平衡和 pilot-operated； - 了解背压对PRV性能的影响； - 比较常规与平衡压力释放阀； - 学习关键的压力安全定义，如设定压力、设计压力、最大允许工作压力（MAWP）、超压等； - 识别PRV的机械组件，了解开式与封闭式外壳设计的区别； - 介绍平衡PRV、pilot-operated PRVs、破裂碟和破裂销技术。 第三章：压力释放标准与规范 - 了解规范与标准的区别； - 介绍ASME锅炉及压力容器规范（BPVC）及PRV的认证要求； - 介绍与释放阀选型和设计相关的API 520、521和526标准。 第四章：超压保护场景与设计理念 - 识别过程工业中常见的超压场景； - 区分合理与不合理的场景； - 理解风险评估中的双重风险概念； - 分析超压的原因及示例，如操作错误、仪器故障、阀门阻塞等； - 学习火灾超压保护的最佳实践； - 理解PRV的局限性及何时需要额外的安全措施； - 介绍欠压场景与真空释放的概念； - 了解完整的释放系统设计文件所需的文档。 第五章：释放阀尺寸计算与API/ASME方法论 - 遵循API/ASME标准的压力释放阀尺寸指南； - 了解关键的尺寸考虑因素，如孔口面积选择、有效面积与实际面积的区别等； - 审查PRV入口压力损失和出口背压限制； - 理解冷差测试压力（CDTP）； - 为单一故障、双重故障及火灾案例情境确定释放压力； - 执行以下PRV尺寸计算：气体服务（临界流和次临界流）、蒸汽释放阀、液体释放阀（高粘度和低粘度）等； - 学习破裂碟的尺寸选择方法，定义和应用破裂压力、制造范围、破裂公差等，了解如何为工业应用选择、指定和尺寸化破裂碟。
This course is also available as part of my engineering training library on chemengpro, where I share tools, templates, and bonus materials for engineers.Chapter 1: Introduction to Pressure Relief DevicesUnderstand the purpose of pressure relief valves (PRVs) in industrial systemsCompare pressure relief valves vs rupture discs - pros, cons, and typical use casesLearn the function of relief devices in series and when dual protection is requiredChapter 2: Types of Relief Devices and How They OperateExplore the types of pressure relief valves: spring-loaded, weight-loaded, balanced, and pilot-operatedUnderstand the impact of back pressure on PRV performanceCompare conventional vs balanced pressure relief valvesLearn key pressure safety definitions:Set pressure, design pressure, maximum allowable working pressure (MAWP), overpressure, accumulation, blowdown, closing pressure, relieving conditionsIdentify the mechanical components of a PRVUnderstand open vs closed bonnet designsLearn the differences between gas relief valves and liquid relief valvesIntroduction to:Balanced PRVsPilot-operated PRVsRupture disc devicesRupture pin technologyChapter 3: Pressure Relief Standards and CodesUnderstand the difference between codes vs standards Introduction to ASME Boiler and Pressure Vessel Code (BPVC) Overview of ASME certification requirements for PRVsIntroduction to API 520, 521, and 526 standards related to relief valve sizing and designChapter 4: Overpressure Protection Scenarios and Design PhilosophyIdentify common overpressure scenarios in process industriesDifferentiate between reasonable and unreasonable scenariosUnderstand the concept of double jeopardy in risk assessmentAnalyze causes of overpressure with examples:Operator errorInstrumentation failureBlocked or closed valvesCheck valve failureUtility failure (e.g., cooling water, steam, power)Plugged filters or ventsHeat exchanger tube ruptureChemical reactionsHydraulic expansionFire exposure:Fire in liquid-filled vessels scenarioFire in gas-filled vessels scenarioLearn best practices for fire overpressure protectionUnderstand the limits of PRVs - when additional safeguards are neededIntroduction to underpressure scenarios and vacuum reliefLearn about the required documentation for a complete relief system design packageChapter 5: Relief Valve Sizing Calculations and API/ASME MethodologyFollow API/ASME-compliant pressure relief valve sizing guidelinesUnderstand key sizing considerations:Orifice area selectionEffective area vs actual areaRated vs effective discharge coefficient (Kd)Review PRV inlet pressure loss and outlet back pressure limitationsUnderstand Cold Differential Test Pressure (CDTP)Determine relieving pressure for:Single-failure contingenciesMultiple (double) contingenciesFire case scenariosPerform PRV Sizing Calculations for:Gas service - Critical flowGas service - Subcritical flowSteam relief valvesLiquid relief valves (High Viscosity and Low Viscosity)Rupture Disc Sizing and SelectionLearn rupture disc sizing methodology under API/ASMEDefine and apply:Burst pressureManufacturing rangeBurst toleranceOperating ratioUnderstand how to select, specify, and size rupture discs for industrial applications
