枝状管网与环状管网的技术经济评价

Technical and Economic Evaluation on Dendritic Pipeline Network and Looped Pipeline Network of Urban Gas Distribution System

介绍了城市配气枝状和环状管网的特点,通过对枝状管网和环状管网的技术评价和经济评价,指出枝状管网相对于环状管网较为经济。提出了枝状管网与环状管网相结合的城市配气方案,即在城市配气中将主要干管或高中压管道设计为环状管网,次要管道及楼房街区内设计为枝状管网。这种方案既能保障配气管网的水力可靠性,安全平稳供气,又能节约管材投资,提高经济效益。

Through the technical and economic evaluation on dendritic pipeline network and looped pipeline network of urban gas distribution system,it is considered that the dendritic pipeline network is more economic than the looped pipeline network. A gas distribution program,combined with the two networks together,is put forward,that is,the mainline or high/medium pressure pipeline is designed to looped pipeline network, the branch pipeline is designed to dendritic network. With this program ,hydraulic reliability of gas distribution pipeline network can be ensured. Meantime,supply of gas is stable and the investment on pipe material can be saved.