自然循环热水锅炉水动力回路分析法的计算原理  

Principle of Calculations for Hydrodynamic-loop Analysis Method Used for Natural Circulation Hot Water Boilers

作　　者：徐艳英[1] 董芃[1] 兰日华[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《热能动力工程》2006年第5期473-476,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：自然循环热水锅炉长期使用图解法进行水动力计算,计算误差较大,影响了锅炉水动力的安全性。本文详细阐述了水动力回路分析法的计算原理,给出了自然循环热水锅炉水冷壁和对流管束循环回路的水动力回路分析法等效管路图、水动力计算数学方程组及其相应的求解方法。采用水动力回路分析法,不仅可以提高自然循环热水锅炉水动力计算的可靠性,对保证热水锅炉水动力安全具有重要意义,而且由于该方法采用计算机数值求解,其计算效率也得到明显提高。此外,为了便于应用水动力回路分析法对自然循环热水锅炉进行水动力计算,推导给出了另外几种常见的自然循环热水锅炉水冷壁循环回路水动力回路分析法等效管路图,并且介绍了自然循环热水锅炉水动力回路分析法对全炉水动力工作点的计算方法及其运算步骤。Over a long period of time a graphic method has been used for the hydrodynamic calculation of natural circulation hot water boilers,which involves a relatively large calculation error,thus affecting the hydrodynamic safety of boilers.The principles of calculation for hydrodynamic-loop analytic method is expounded in detail.Also given for natural circulation hot water boilers are the equivalent pipeline chart of hydrodynamic-loop analytic method for water walls and convection tube-bundle circulation loops,hydrodynamic-calculation mathematical equations set and their corresponding mathematical solution method.The adoption of hydrodynamic-loop analytic method can not only enhance the reliability of natural circulation hot-water boiler hydrodynamic calculation and guarantee the hydrodynamic safety of hot water boilers but can markedly enhance the calculation efficiency due to the use of a computer-based numerical solution.Moreover,to facilitate the application of the hydrodynamic-loop analytic method for performing the hydrodynamic calculation of the above-cited hot water boilers,through a derivation process given are the equivalent pipeline charts of the hydrodynamic-loop analytic method of a water-wall circulation loop for other commonly seen natural circulation hot-water boilers.In addition,also presented are the hydrodynamic-loop analytic method for the said boilers,the calculation method and operational procedures of hydrodynamic working points for the boiler as a whole.

关 键 词：热水锅炉 自然循环 水动力计算 水动力回路分析法 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]