管网叠压供水设备组件对系统运行的影响探讨

Effect of Components of Additive Pipe Pressure Devices on Water Supply System Operation

对管网叠压供水设备准入条件及其组件气压罐、稳流罐、倒流防止器进行探讨,认为系统中是否要设置气压罐应根据计算分析而定。当供水管网正常运行,设备进水管的补水能力大于系统的设计流量时,可不设置稳流罐;叠压供水设备直接由市政管网吸水为住宅小区、公共建筑增压时,水泵前应安装低阻力倒流防止器。

Conditions of access criteria and components of additive pipe pressure water supply devices,such as air pressure tank,steady flow tank and backflow prevention device,were discussed.It was considered whether an air pressure tank was required according to calculation.Result shows steady flow tank isn＇t necessary only if water supply networks operating in a normal status which the supply water capacity of inlet pipe is greater than the design flow in system.Low pressure backflow prevention device should be set when additive pipe pressure water supply devices suck directly from municipal pipeline network for pressurization of residence community and public buildings.