Rainwater pumping stations are an important part of the urban drainage system, mainly used to lift rainwater and prevent urban waterlogging. When the water level at the outlet of the storm pipe is high, the rainwater cannot be drained by itself;or when the highest water level of the water body is higher than the ground in the drainage area, a rainwater pumping station should be set up in front of the outlet of the stormwater pipe.
The working principle of the rainwater pumping station is to push the water through the high-speed rotation of the axial flow pump impeller, pressurize the water, and push it from bottom to top. In addition, the basic components of the rainwater pumping station include machine room, water collection tank, grille, auxiliary room, etc. The machine room is equipped with a pump unit and related ancillary equipment. The grille and suction pipe are installed in the sump, and the sump can also adjust the unevenness of the incoming water to a certain extent, so that the pump can work more evenly. The function of the grid is to block the coarse solid impurities in the water to prevent the impurities from clogging and damaging the pump. Ancillary rooms generally include storage rooms, repair rooms, rest rooms and toilets.
It is important to note that the design flow rate of the stormwater pumping station should take into account the large difference between heavy and light rain. In addition, in recent years, extreme weather such as heavy rain has increased, so rainwater pumping stations also need to be equipped with remote monitoring systems to monitor the operation status of pumping stations in real time.
In the design scheme of rainwater pumping station manufacturers, the following points need to be noted:
Location determination: According to the overall planning of the city and the planning of infrastructure construction, ensure that the design of the rainwater pumping station can be matched with the urban infrastructure and can be coordinated with the overall planning of the city.
Plant and station topographic survey: When carrying out plant and station topographic survey, the measurement ratio and measurement range need to be determined in combination with the floor area of the pumping station and ancillary structures, and the measurement range should be 4 times the area of the pumping station.
Design scale: Determine the appropriate scale of the pumping station according to the importance of the construction project, drainage standards, drainage methods, design rainstorms, drainage area and storage volume. If necessary, a mathematical model should be used to simulate the rainfall process line, find out the waterlogged area, calculate the waterlogging time, and determine the scale of the pumping station.
Pumping station anti-corrosion design: There are many details that need to be paid attention to in the design of the pumping station, such as the anti-corrosion design of the pumping station. If the configuration does not take into account the site conditions, it will affect the design and construction quality of the entire pumping station.
Overall, a manufacturer's design needs to take into account a variety of factors to ensure that the pumping station can effectively collect and treat rainwater, while also taking into account the durability and ease of maintenance of the pumping station.