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并联管网广泛存在于动力、化工、原子能设备中,管内为单相流动的复杂管网计算已趋复杂。对于管内为两相、考虑受热不均及多级节流方式下的管网计算目前还没有合适的数学模型,已有实验研究只能进行单相下缩小设备尺寸的比例模化,与实际设备相差较远。本文基于管网计算的两个基本规则,提出数学模型,获得了各单管或管屏的水动力特性曲线方程,从而计算出各分支管的流量。编制了程序,对模型的正确性进行了考验,该模型被证明是有效的。
Parallel pipe network exists widely in power, chemical industry, atomic energy equipment, pipe complex single-phase flow of complex pipe network calculation has become more complicated. There is no suitable mathematical model for pipe network calculation under uneven heating and multi-level throttling mode for the two phases in the pipe. There are experimental studies that can only scale down the size of the equipment in a single phase and compare with actual equipment The difference is far. Based on the two basic rules of pipe network calculation, this paper presents a mathematical model and obtains the hydrodynamic characteristic equation of each single pipe or pipe screen to calculate the flow of each branch pipe. A program was prepared to test the correctness of the model, which proved to be effective.