Shanghai CLOS Valve Co Ltd Trevitest online valve

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上海克罗斯阀门有限公司 Shanghai CLOS Valve Co. , Ltd Trevitest on-line valve testing 安全阀在线校验 Delivering improved

上海克罗斯阀门有限公司 Shanghai CLOS Valve Co. , Ltd Trevitest on-line valve testing 安全阀在线校验 Delivering improved valve efficiency 提高和改善阀门的 作效率

Trevitest on-line valve testing Why Trevitest? 为什么要采用安全阀在线校验装置 Replacing the boiler float gives the following

Trevitest on-line valve testing Why Trevitest? 为什么要采用安全阀在线校验装置 Replacing the boiler float gives the following advantages代替水压测试, 具有如下优点 § Reduction in fuel costs降低燃 料成本 § Reduction in commissioning time减少系统试车时间 § Reduction in valve wear and tear减少阀门的磨损 § Reduction in vessel pressure excursions leading to longer life 减少容器压力的偏离从而延长使 用寿命 § Controlled testing at lower pressure在正常操作温度下进行 实验, 不需要温度补偿调整压力

Trevitest on-line valve testing Traditional set-point verification传统的阀门校验 Traditional set-point testing involves raising line pressure

Trevitest on-line valve testing Traditional set-point verification传统的阀门校验 Traditional set-point testing involves raising line pressure and recording the set-point of the valve传统的阀门校验需要提高在线压力 和记录阀门的设定压力 Limitations 局限性 § Uneconomical - increased fuel costs不经济-增加了燃料 成本 § Compromises plant safety - unnecessarily raising line pressure 由于不必要的提高在线运行压力, 影响系 统安全 § Environmental - high levels of noise有噪声污染

Trevitest on-line valve testing What is Trevitest On-linevalve testing? 什么是安全阀在线校验 Trevitest is a system

Trevitest on-line valve testing What is Trevitest On-linevalve testing? 什么是安全阀在线校验 Trevitest is a system developed allow the set pressure of safety valves to be verified and recorded without the need to raise line pressure 安全阀在线校验装置 1979年出现, 不必提高在线 运行压力, 就可以对安全阀的设定压力进行校正 和记录.

Trevitest on-line valve testing The advantages of Trevitest For routine inspection: 对于正常检验而言 § §

Trevitest on-line valve testing The advantages of Trevitest For routine inspection: 对于正常检验而言 § § Eliminates the need to shut down the process避免系统停车 § Eliminates the need for temperature compensation由于在正常操作 温度下进行实验,不需要温度补偿调整压力 Valve re-certification on-line (set pressure verification)阀门的设定压 力调整可在线进行 § Enables valves to be aligned to delayed outages § Enables longer periods between outages to be planned For corrective action: 对于校正活动而言 § Testing valve for operational readiness测试阀门为系统运行做准备 § Measuring valve lift可以测试阀门的起跳 § Provide good indications for valve’s blow-down settings可以指示出 阀门的排放设定 § Provide good indication for spring performance可以指示弹簧性能 § Set pressure upgrading on-line upon plant requirement可根据 厂 要求, 提升设定压力 For safety: 从安全性的角度 § Valve is free to operate with the mechanics in place. 通过机械装置来 操作阀门 § Remote operation typically 20 m but can be extended可以20米远 的距离遥控操作.操作距离也可以延长. § Equipment available to work in hazardous areas设备可以在危险环 境下 作 § Secure baseplate enables valve to be forced closed安全底板可以使 阀门强制关闭.

Trevitest on-line valve testing Trevitest equipment in place on safety relief valve

Trevitest on-line valve testing Trevitest equipment in place on safety relief valve

Trevitest on-line valve testing Calculations: Set pressure verification 安全阀设定压力校正的计算 TO DETERMINE SET PRESSURE确定 设定压力

Trevitest on-line valve testing Calculations: Set pressure verification 安全阀设定压力校正的计算 TO DETERMINE SET PRESSURE确定 设定压力 Pstt = Ftt/MSA + Pl Where: Pstt = set pressure as predicted by Trevitest设定压力 Ftt = force recorded by Trevitest 作用力 MSA = valve mean seat area阀门密封面的面积 Pl = pressure in line (zero for cold testing) 系统在线压力 TO DETERMINE VALVE SPRING ADJUSTMENT RATE (Pstt 1 – Pstt 2) / X Where: Pstt 1 = first Trevitest set pressure Pstt 2 = second Trevitest set pressure X = spring adjustment `

Trevitest on-line valve testing Extended running and re-certification 延长运行寿命 § Incorporating Trevitest as part

Trevitest on-line valve testing Extended running and re-certification 延长运行寿命 § Incorporating Trevitest as part of the valve overhaul strategy will increase intervals between shutdowns (benchmarking) and save customers time and money应用安全阀在线校验装置在阀门的维 护方面,可以增加系统停车的间隔时间从而为客户节省时间和成本 § Valves can be recertified in-situ to allow a system to comply with plant regulations阀门可以在线校验从而使系统满足 厂的 总体要求.

Trevitest on-line valve testing System pressure and back-pressure 带背压和不带背压的系统 § A major part of

Trevitest on-line valve testing System pressure and back-pressure 带背压和不带背压的系统 § A major part of the Trevitest set pressure calculation is the line pressure. This must be accurately determined, typically +/- 0. 5% § 安全阀设定压力计算的一个主要部分是系统压力. 这必须精确确定.通常误差在+/-0. 5%. § Valves with no back pressure can be Trevitested无背压的阀门能够在线校验 § Valves with a back pressure can also be Trevitested, but they must have a bellows fitted带背压的阀门也可以在线校验. 但必须 附加一个波纹管.

Trevitest on-line valve testing Trevitest accuracy : Load cell calibration rig 安全阀在线校验的精度保证, 负荷单元 作原理

Trevitest on-line valve testing Trevitest accuracy : Load cell calibration rig 安全阀在线校验的精度保证, 负荷单元 作原理

Trevitest on-line valve testing Trevitest Equipment: Recent developments 近期的发展 § Rugged computers used during

Trevitest on-line valve testing Trevitest Equipment: Recent developments 近期的发展 § Rugged computers used during the test § Data acquisition and management now computerised § Acoustic transducer added to monitor valve leakage and aid set pressure reading § Customer data base for all valves § Increased accuracy- set point can be magnified

Trevitest on-line valve testing What valves can be Trevitested? As a general rule: Valves

Trevitest on-line valve testing What valves can be Trevitested? As a general rule: Valves 1” nb. and greater with a protruding spindle/stem. A low force rig may be used for very small valves – accuracy can be compromised Pilot operated valves equipped with field test port PV valve closed (normal position)

Trevitest on-line valve testing How to establish if a valve can be Trevitested?

Trevitest on-line valve testing How to establish if a valve can be Trevitested?

Trevitest on-line valve testing Trevitesting valves with back pressure

Trevitest on-line valve testing Trevitesting valves with back pressure

Trevitest on-line valve testing Trevitest compatibility Example of valve information required to establish Trevitest

Trevitest on-line valve testing Trevitest compatibility Example of valve information required to establish Trevitest compatibility

Trevitest on-line valve testing Extended running and re-certification § Incorporating the use of the

Trevitest on-line valve testing Extended running and re-certification § Incorporating the use of the Trevitest System with a valve overhaul strategy will save customer’s time and money; by increased intervals between shutdowns (Benchmarking) § Valves can be re-certified in-situ to allow a system to comply with plant regulations

Trevitest on-line valve testing Recessed spindle (as diagram B) Pre-requisite form

Trevitest on-line valve testing Recessed spindle (as diagram B) Pre-requisite form

Trevitest on-line valve testing Companies using Trevitest § GPIC Bahrain § QAFCO Qatar §

Trevitest on-line valve testing Companies using Trevitest § GPIC Bahrain § QAFCO Qatar § PDO Oman § PGS Production (Banff) § Bleo Holm § § § ADGAS UAE § KNPC Kuwait § Conoco § Huntsman Britannia § L. O. R. Shell Expro: - (Gannet, North Cormorant, Cormorant Alpha) § Esso § Texaco § Baker Petrolite § Hydro Polymers § British Gas § British Energy § BNFL/Magnox § BHP Douglas § Shell Stanlow § BP § Mobil/Exxon § Transco § Glaxo Smith Kline