It is often necessary to build a pumping station in a large-scale water use place to control the water delivery. How to improve the scientific management level of the pumping station, maximize the role of the pumping station, and reduce the energy consumption of the pumping station. According to the economic indicators proposed in the "Technical Regulations for Pumping Stations":
A. Completion of the project
The completion rate of the project is the ratio of the amount of work completed to the total amount of work in the entire pumping station project.
Generally speaking, the completion level of the pumping station is at least 80%.
B. Installation progress of using the device
The installation progress of the equipment is said to be the percentage of the total number of units that have been installed in the pumping station.
The installation progress of the equipment, if it is in the pumping station of power generation can not be less than 90%, if the pumping station of the internal combustion engine can not be lower than 80%.
C. Unit efficiency
The efficiency of the unit is the ratio between the work done and the input power when the unit is in operation.
Q- indicates the flow rate of the pump, that is, the amount of water pumped out per unit time. The unit is usually m3/S, m3/h.
H- indicates the lift of the pump, that is, the height and distance that the pump can deliver the pump. The unit is generally expressed in m.
The efficiency of the pumping device shall be determined according to the type of pump, the average device head and the sediment concentration of the water source as specified below.
In the case of the efficiency of the pump unit, several references are used, both in the form of the pump, the delivery head, and the proportion of the delivered water.
If it is a large medium-sized axial flow pump and mixed flow pump unit with a head of more than 3 meters, the efficiency should be more than 65%; if it is less than 3 meters, the efficiency should exceed 55%.
When the single-stage pump uses the pumping station to clear the water, the use efficiency is required to be higher than 60%; if it is turbid and contains the impurity water, the lower interest rate is higher than 55%.
D. Energy consumption
Energy consumption refers to the energy consumed by the pump every 1000t of water pumping.
The energy consumption index of the pumping station should not exceed 5kW?h/(kt?m) for the energy consumption of the power pumping station; the energy consumption per unit of the internal combustion engine pumping station should not exceed 1.35kg/(kt?m).
E. Cost of pump unit operation
The operating cost of the pump is not just the power loss, but also includes many items, pump management personnel wages, fuel, water, maintenance, overhaul, equipment costs and so on.
