Steam Generator 蒸汽发生器

今天小编为大家带来的是蒸汽发生器运行原理的英文版本，供大家参考学习。

The steam generators are vertical, shell and U-tube heat exchangers where energy from the hot pressurized reactor coolant is transferred to the secondary coolant to produce dry, saturated steam to supply the main turbine and auxiliaries.

蒸汽发生器是由外壳和U形管构成的立式热交换器，反应堆的高温高压冷却剂在这里把能量传递给二次冷却剂，产生干饱和蒸汽给主汽轮机及辅助设施。

The tube sheet andthe heat transfer tubes form the boundary between the radioactive primary system and the non-radioactive secondary system.

管板和传热管形成了放射性一次系统和非放射性二次系统之间的边界。

Reactor coolant enters the steam generator from the inlet nozzle, flows through the inlet chamber, U tubes, outlet chamber, and leaves it from outlet nozzle.

反应堆冷却剂由下封头进口接管进入一次侧进口水室，然后通过倒置U形传热管将热量传给二回路给水，冷却剂流出U形管后通过出水口室，从下封头出口接管流出

The secondary side of the steam generator consists of the feed and steam nozzles, the tube bundle and supports, the tube bundle wrapper, primary and secondary moisture separators, and appropriate instrumentation and blowdown penetration.

蒸汽发生器的二次侧包括给水接管和蒸汽接管、管束和支承、管束包层、一级和二级汽水分离器以及相应的仪表和排污贯穿孔

Feedwater enters the steam generator through the feedwater inlet nozzle and is distributed to the annulus between the tube bundle wrapper and steam generator shell where it mixes with the hot recirculation water from the moisture separation equipment.

给水通过给水入口接管进入蒸汽发生器，然后被分配到管束包层和蒸汽发生器壳体之间环形空间，并与来自汽水分离设备的热的再循环水混合。

The feedwater-recirculation flow mixture then flows between the bottom of the wrapper and the tube sheet and into the tube bundle, where heat is transferred to the secondary coolant producing a steam-water mixture.

给水和再循环水的混合流然后从包层底部和管板之间流过，并进入管束。在管束中，热量传给二次冷却剂，产生汽水混合物

The mixture flows upward to the primary or swirl-vane moisture separators. The steam, being less dense than the water can change direction easily and passes through the swirl vanes while the water is slung to the outside and flows to the downcomer where it mixes with incoming feedwater.

汽水混合物向上流到一级即旋叶式汽水分离器。汽水分离器由若干固定的叶片组成，叶片使汽水混合物产生旋转运动。比水密度小的蒸汽能很容易地改变方向而通过旋叶，水则甩向外面，流到下降段，在那里与进入的给水混合。

The steam passes through chevron separators (demisters) and then leaves the generator through the outlet nozzle while the separated moisture is collected and drained to the downcomer.

蒸汽通过人字形分离器（除雾器），并通过出口接管离开蒸汽发生器。分离出来的水分被收集起来排到下降段。

The steam generator operates as a natural circulation boiler.

蒸汽发生器像一个自然循环锅炉那样工作。