除氧器布置优化及暂态计算方法

Optimization of Deaerator Arrangement and Transient Calculation Method

除氧器低位露天布置可以大大降低工程造价。但是,除氧器优化布置的必要条件是保证给水泵在除氧器滑压运行时发生甩负荷的危险情况下给水泵不汽蚀,并对给水泵吸入管管径进行优化选择。除氧器的暂态计算是除氧器优化布置的先决条件,在建立数学模型时需要做出一些假定,以便使计算方法简便实用。

The low - level arrangement of the deaerator can greatly reduce the engineering cost. But the necessary conditions for optimized arrangement of the deaerator are to ensure that no steam corrosion occurs to the feed - water pump in the dangerous situation that load rejection occurs while the deaerator is under sliding operation. Also the optimum selection is used for the diameter selection of the feed pump suction pipe. The transient calculation of the deaerator is an prerequisite condition for its optimized arrangement. Some assumptions should be given in establishment of mathematic model for the convenience of calculation method and practice.