核电厂流量测量设计选型分析

Flow Measurement Analysis for Nuclear Power Plant

在核电厂正常运行过程中,流量测量(如主给水流量测量、蒸汽流量测量)是进行经济核算所必需的一个重要参数,并且通过控制流量对核电厂的正常运行也有一定的保护作用。流量仪表种类繁多,并且在能够适应的流体性质、流动状态及工作条件等方面,以及在测量范围、精度、压力损失等方面都各有特点。文章简单介绍了流量测量的基本原理、多种测量方式,并针对恰希玛核电厂工程2号机组(C-2)中应用的测量种类、方法和要求,结合工程设计实例对流量测量的设计选型进行了具体说明。

During the normal operation of nuclear power plant, flow measurement （such as main feedwater measurement, steam flow measurement） is an important parameter for economic accounting, and there is some protection effect on the normal operation by flow control. There are a wide variety of flow meters and they have different characteristics in the fluid properties, flow and working conditions to which the flow meters are adapted, as well as in the measumment range, precision, pressure loss and other aspects. The paper firstly introduces the basic principles, kinds and methods of flow measurement for CHASNUPP 2 （C 2） , and gives the detailed explanation of instrument selection for flow measurement with the example of the project.