What is network management water supply?

The pipeline system for transporting and distributing water to users in water supply projects is also called water supply pipe network. Including water pipes and canals, water distribution networks, pressurized pumping stations, water towers, pools and ancillary facilities of the network. The pipeline from the water source to the water plant only plays the role of water delivery, which is called water delivery pipe network; The pipeline from the water plant is called water distribution network. In the water distribution network, the pipes that mainly serve to deliver water are called main pipes, the pipes that branch from the main pipes and serve to distribute water are called branch pipes, and the pipes that connect users from branch pipes are called user branch pipes.

The layout of water supply network has two basic forms: dendritic and circular. The former has clear main pipes and branch pipes, forming dendrites; The pipes at the back are connected vertically and horizontally to form a ring. Water supply network consists of many water pipes, and the materials of water pipes can be divided into nonmetallic pipes (reinforced concrete pipes, plastic pipes, reinforced glass fiber pipes, steel-plastic composite pipes, steel-sheathed prestressed reinforced concrete pipes, etc.). ) and metal pipes (cast iron pipes, ductile iron pipes, steel pipes, etc. ).

Determination of pipe diameter

The diameter of each pipe section is determined by both velocity and velocity. When the flow rate is constant, if the flow rate is large and the pipe diameter is small, the pipeline cost is low. However, the large flow rate will lead to large head loss and increase the height of water tower and the recurrent cost of pump operation; On the other hand, if the flow rate is small and the pipe diameter is large, the head loss and routine operation cost can be reduced, but the pipeline cost is increased.

Therefore, economic comparison should be made when determining the pipe diameter to minimize the total cost of water supply. The traditional method is to apply economic flow velocity, and the modern method is to adopt optimal design method.