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关于凝汽器英中对照翻译文件 |
1. The anchorages of the condenser to the building structure shall be evaluated for SSE loads based on an equivalent static analysis of the condenser and the nozzle loads derived from the bypass line seismic analysis. The overall design of the condenser shall be reviewed on a realistic basis to demonstrate that it falls within the bounds of design characteristics found in conventional power plant condensers which have demonstrated good seismic performance.
凝汽器固定在建筑物上的锚固装置应根据凝汽器的当量静态分析以及旁路管道抗震分析获得的喷嘴负荷进行SSE负荷评估。凝汽器的总体设计应根据实际情况进行评审，以证实其属于已经展示出良好抗震能力的常规电站凝汽器中发现的设计特征的范围内。
2. Condensate pumps shall be vertical, single speed, multistage electric motor driven pumps.
凝泵应采用立式单速多级电动机驱动泵。
3. The suction lines of the condensate pumps shall be sized for velocities of 1.5 meters per second or less from the hotwell to the pumps.
凝泵的吸入管道的尺寸应根据从热阱到泵的1.5米/秒（或更低）的速度要求来确定。
4. Pump head-capacity characteristics shall continuously slope upwards, with a minimum 10 percent head rise from design point to shutoff, not exceeded 20% head at design point. Two or more pumps operated in parallel shall have identical characteristic curves and be designed to operate on the steep portion of the curve.
泵压头-能力特征曲线应连续向上倾斜，从设计点到关闭最少10%的压头升高幅度，在设计点处不超过20%压头。两台或多台并联运行的泵应具有相同的特征曲线，并且应能够在曲线的急剧升降部分运行。
5. Each pump shall include a design margin, i.e., head above the system - required pump guarantee point.
每台泵应包括一个设计裕度，即高于系统要求的泵保证点的压头。
6. Pumps operating in parallel shall be identical in capacity, operating speed, suction requirements and mechanical design.
并联运行的泵应具有相同的能力、运行速度、吸入要求和机械设计。
7. The equipment specification for each pump shall require shop performance tests to demonstrate that head/flow characteristics, NPSH and horsepower requirements meet design, and that cavitation or excessive vibration are not encountered over the entire operating range of flows and pump speeds.
每台泵的设计规格说明应要求工厂性能测试结果证明压头/流量特征、净正吸入压头和马力要求符合设计的要求，并且在流量和泵速度的整个运行范围内不会出现气穴或过度振动的现象。
8. Pumps in vacuum service (i.e., condensate pumps) shall be provided with positive shaft seals that assure no air in-leakage.
真空运行的泵（即冷凝泵）应配备正作用轴密封，确保无空气渗入。
9. For accidental operating conditions with cavitation, the pump shall be able to operate without damage for 15 minutes following accidental flow increase. After failure elimination, the pump shall continue operation.
对于发生气穴现象的事故运行状况，泵应能够在事故流量增加后15分钟内无故障和无损坏的运行。故障消除后，泵应能够继续运行。
10.All care shall be taken to choose materials that shall avoid erosion corrosion or pitting corrosion phenomena. These choices shall be submitted to the Purchaser for approval.
应竭尽所有可能选择避免侵蚀和点蚀现象发生的材料。这些选择应提交给购买者进行审批。
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