采用水动力回路分析法进行自然循环热水锅炉水动力数值计算

Loop Analysis Method for the Numerical Calculation of Hydrodynamic Characteristic of Hot Water Boiler with Natural Circulation

根据流体力学原理和锅炉水动力计算的基本原则,提出了一种能够直接计算自然循环热水锅炉各循环回路中每根单管水动力特性的自然循环热水锅炉水动力数值计算新方法,即水动力回路分析法,推导得出了基于该方法的水动力计算基本方程组,给出了其数值求解方法及程序框图,并应用该方法对两台自然循环热水锅炉进行了水动力特性计算分析,将其计算结果与按照JB/T8659-1997《热水锅炉水动力计算方法》的图解法分析结果进行比较,证明了水动力回路分析法的正确性和实用性。

in this paper, based on the hydromechanics and principle for hydrodynamic calculation of boiler, the loop analysis method for the numerical calculation of hydrodynamic characteristic of hot water boiler with natural circulation is presented, which can calculate the flux water of in every tube in the boiler. The equation groups of the loop analysis method are deduced and programmed. In addition, the hydrodynamic characteristic of two hot water boilers with natural circulation is calculated and analyzed by both of the loop analysis method and the Hydrodynamic Calculation Method for Hot Water Boiler（ JB/T8659 -1997）, which validates the correctness and practicability of the loop analysis method.