城市燃气管网的管径优选

Optimization of pipeline diameter in city gas network

根据城市燃气管网设计的特点和燃气管输理论,以图论原理为指导,运用最优化方法,以使整个城市管网系统的管网造价最低为目标函数,以管网的压力降方程、连续性方程、环路压力平衡方程等为约束条件,建立了城市燃气管网管径优化模型,采用拉格朗日算法优化燃气管网,并开发了城市燃气管网管径优选计算软件。

Based on characterstic of the urban gas networks and optimization theory, the paper builds up optimization model for the urban gas networks,in which the objective function is the least pipeline investment, the restrictive conditions are continuity function,pressure failing function and loop balance function. The urban gas networks is optimized with Lagrange arithmetic and pipe diameter optimization software is developed.