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摘 要 ：本文讨论了多热源环状热水管网的水力计算方法,将最小平方和法引入初始流量分配中,介绍了调整管径的简化方法,编制了相应的计算程序,在改进环状管网管径时,考虑了可靠性要求，并将多热源环状热水管网的水力计算方法用于某高校的管网改造，给出了多热源环状管网改造的设计方法，以指导实际工程的应用。 关键词 ：管网改造 环状管网 优化水力计算 流量分配 Abstract ：the paper discussed the water pipe heat ring hydraulic calculation, the minimum squares method is introduced into the initial flow distribution, introduces the diameter of the simplified method, the adjustment of the corresponding calculation program, in improving the circular pipe diameter, considering the reliability requirements, and will be more heat water pipes ring the hydraulic calculation method for the pipeline renovation, a university of heat pipe ring are obtained, the design method of the transformation of the practical engineering application with guidance. Keywords : pipeline renovation,Circular pipe,Optimize the hydraulic calculation,Flow distribution