UNIT 16 STEAM GENETATOR 核电厂蒸汽发生器

UNIT 16 STEAM GENETATOR

蒸汽发生器

1.The steam generators are vertical, shell and U-tube heat exchan

gers where energy from the hot pressurized reactor coolant is t ransferred to the secondary coolant to produce dry, saturated s team.

蒸汽发生器为立式U型管热交换器。在此，一回路高温高压的能量传递给二次侧的流体，产生干燥、饱和的蒸汽。

2.The dry saturated steam produced is used to operate the main t

urbine and auxiliaries in the production of electricity.

干燥饱和的蒸汽用于汽机和辅助系统的用汽，最终产生电力。

3.The steam generator design requirements are to produce saturat

ed steam with less than 0.5percent moisture by weight.

SG设计要求其二次侧产生的蒸汽湿度小于0.5%。

4.The tubesheet and the heat transfer tubes form the boundary be

tween the radioactive primary system and the non-radioactive se condary system.

强放射性的一次侧和无放射性的二次侧的隔离是通过传热管和管板实现。

5.Reactor coolant enters the steam generator consists of the inle

t nozzle. Flows through the inlet chamber, U tubes, outlet cham ber and leaves it from outlet nozzle.

主冷却剂先流经入口管，然后进入到入口水室，经U型传热管到出口水室，最后通过出口管离开SG。

6.The secondary side of the steam generator consists of the feed

water and steam nozzles, the tube bundle and supports, the tub

e bundle wrapper, primary and secondary moisture separators and

appropriate instrumentation and blowdown penetration.

二次侧由以下部件组成：给水和蒸汽管，传热管及其支撑件，管束围筒，

一、二级汽水分离器，相关的仪表，排污管组成。

7.The lower shell is the evaporator containing the tube bundle a

nd the upper shell is the steam drum containing the steam separ ating and drying equipment.

壳体的下部为含有传热管的蒸发器，上部是汽水分离和蒸汽干燥的蒸汽室。

8.The steam generator operates as a natural circulation boiler.

SG是自然循环式的锅炉。

9.In order to support and align the steam generator tubes and pr

event flow induced movement, tube support plates are provided.

为了固定SG传热管和防止流动导致的移动，安装有管子支撑板。

10.The blowdown line is provided to remove corrosion products whi

ch would concentrate at the tubesheet.

排污管线的设置用于排出腐蚀产物，腐蚀产物会在管板处沉积。

11.Nuclear power plants are equipped with N-16 detector on the st

eam line for indicating U-tube leakage.

在SG的二次侧主蒸汽管道旁设置有N-16放射性探测仪，用于检测U型管是否存在泄漏。

12.There are two types of steam generator level indication: wide r

ange and narrow range.

SG水位指示有两种类型：宽量程和窄量程。