管网叠压供水水头影响及节能框算  

ANALYSIS OF HEAD LOSS AND ENERGY SAVING OF PRESSURE-SUPERPOSED WATER SUPPLY IN WATER DISTRIBUTION NETWORKS

作　　者：张敏 胡诗苑 高金良 ZHANG Min;HU Shiyuan;GAO Jinliang(Donging District Housing and Urban Rural Development Buream of Dngring City,Shandong Dongying 257100.China;School of Environment,Harbin Instiute of Technology,Harbin 150090,China)

机构地区：[1]东营市东营区住房和城乡建设局,山东东营257100 [2]哈尔滨工业大学环境学院,哈尔滨150090

出　　处：《低温建筑技术》2022年第3期28-30,34,共4页Low Temperature Architecture Technology

基　　金：国家自然科学基金面上项目“城市供水管道降-复压漏失机制及相机调控研究”(51778178);国家自然科学基金面上项目“供水管网盲端支管污染空腔流动与传质耦合机制及改善技术”(51978203)

摘　　要：文中分析了使用叠压供水设备的用户位置对其自身可利用余压及其对周围用户的水头影响进行了分析;同时对叠压供水系统能耗与传统“水箱+变频水泵”联合供水的能耗进行了对比分析。结果表明叠压用户靠近水厂时,对于后续用户水头的影响相同;叠压用户远离水厂时,距离水厂越近的用户受到叠压用水用户的影响越小,同时距离水厂越远,叠压用户用水波动影响越大。叠压供水节能与用户流量有关及市政进水水压有关,且恒大于H_(市进min)Q_(d)/179.33。叠压供水作为从传统的二次供水方式中逐步发展出的新型二次供水技术,能够利用管网余压直接进行加压,且避免了水箱的污染问题,得到了广泛的应用。为了更好的指导叠压供水设备的使用,对叠压供水水头影响及节能效果进行了研究。This paper analyzes how the position of the pressure-superposed water supply equipment affect the available residual pressure and the water head of the surrounding users. The energy consumption of the pressure-superposed water supply system is compared with that of the traditional system which is water tank combined frequency conversion pump. The results show that the effect on the water head of subsequent users is the same when the pressure-superposed users are close to the water plant. The closer they are to the water plant, the less affected they will be by the pressure-superposed water users when the superimposed users are far away from the water plant. At the same time, the farther they are from the water plant, the more affected the fluctuation of the superimposed water users will be. The energy saving of pressure-superposed water supply is related to user flow and municipal inlet water pressure which is more than H_(市进min)Q_(d)/179.33. As a new secondary water supply technology developed from the traditional ones, the pressure-superposed water supply technology can make full use of the residual pressure of the water distribution network and avoid the pollution. To better guide the use of pressure-superposed water supply equipment, the effect of water supply head loss and energy saving were studied.

关 键 词：供水管网 叠压供水 水头损失 

分 类 号：TU991[建筑科学—市政工程]