美国威兰(Velan)阀门公司 - 地震质量测试，通过仿真管道破坏性测试证明的高可靠性，按照API 607第4版标准对球阀和蝶阀进行防火测试

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地震质量测试
通过仿真管道破坏性测试证明的高可靠性
按照API 607第4版标准对球阀和蝶阀进行防火测试
Seismic Qualification Tests
Superior Reliability Proven in Simulated Line Rupture Tests
Fire Testing of Ball and Butterfly Valves to API 607, 4th Edition

美国威兰阀门公司

　　对一个DN500，ANSI 1500的Velan快速操作主隔离闸阀进行地震模拟测试。测试程序包括热循环和冷循环，二轴共振研究，二轴随机多频测试，应用配置设计喷嘴负载，以及在地震模拟中进行冷循环测试。18个单轴向应变仪器安装在阀杆、叉管和其他主要区域上，并记录下应力数据。
　　A 20" Velan ANSI 1500 fast operating main isolation gate valve was subjected to seismic simulation tests. The test program consisted of hot and cold cycling, biaxial resonant searches, biaxial random multi-frequency testing with design nozzle loads applied, and cold cycling tests performed during siesmic simulation. 18 uniaxial strain gauges were mounted on the stem, crotch and other critical areas and strain data was recorded.

　　试验显示阀门具有足够的性能和结构完整性，能够承受模拟的地震环境。
　　It was demonstrated that the valve possessed sufficient functional and structureal integrity to withstand a simulated seismic environment.

通过仿真管道破坏性测试证明的高可靠性
Superior Reliability Proven in Simulated Line Rupture Tests

　　Velan花费50万美元，由北美洲主要的公共机构对Velan锻造Dn200，1500磅级，快速关闭（20秒），电动执行机构，模拟管道上的隔离阀进行核工业领域的破坏性事件（称为LOCA，冷故障损失）试验。每次排放能量达到惊人的2,129,570 HP，如图所示。伴随的振荡导致局部地震，但是Velan阀门在所有16次关闭测试中关闭性能完好，检验后才发现有稍微的磨损。
　　At a cost of $0.5 million, a major North American utility carried out closure tests on a Velan forged 8" 1500 Class, fast-closing (20 seconds) electrically actuated isolation valve to simulate a line rupture event called LOCA (Loss of Cooling Accident) in the nuclear industry. The energy dissipated during each discharge of 2,129,570 HP was dramatic, as shown in photo. The accompanying vibrations caused a local earth tremor, but the Velan valve shut off perfectly during all 16 closure tests with little wear shown after examination.

按照API 607第4版标准对球阀和蝶阀进行防火测试
Fire Testing of Ball and Butterfly Valves to API 607, 4th Edition

阀门在769-980^oC火焰下持续燃烧30分钟
Valve during burn period is exposed to 1400-1800^oF
(769-980^oC) flames for the duration of 30 minutes.

快速水灭火将阀门温度降到100^oC以下。
Rapid water quenching lowers the valve temperature
to below 212^oF(100^oC).


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