(1) Select a submersible multiple stage pump based on the maximum allowable production of the source well. The pump volume of the pump must be consistent with the actual water inflow in the well. The pump volume must be equal to or slightly less than the real production of the water source well. Otherwise, strong pumping will be produced, which will not only shorten the service life of the vertical turbine submersible pump, but also filter it in severe cases. The net is damaged, causing the sand to stop, and even leading to the well to be scrapped.
2) The diameter of the vertical turbine pump should match the diameter of the wellbore. In order to make the vertical turbine pump run efficiently, the groundwater can become quickly collected when pumping water, and the running of the pump could be decreased without resistance. The diameter of the wellbore of the pump and the pump body is required to be larger than the maximum diameter of the pump body by 20-40 mm. Which is, the annular gap between the largest diameter part of the pump body and the well wall ought to be 10-20 mm to extend the service life of the water well and vertical turbine submersible pump.
(3) The pump head from the vertical turbine pump in the downhole position of the pump head of the vertical turbine pump must not be positioned within the position of the filter tube (flower tube), and should be put in the position from the well wall tube (solid tube). Or else, the sand will not stop when pumping or even destroy the well. In accordance to the electric curve of the exploration hole, it is determined, in line with the hydrogeological conditions (buried depth of the aquifer, aquifer thickness, aquifer lithology) and pump procedure of the well and adjacent water source water wells. The well’s well framework (well diameter, flower pipe, real pipe position) and well depth and water pump selection to make certain that there will be no issues in the future operation of the pump.
(4) According to the allowable production amount of the water source well, select the vertical turbine submersible pump, and determine the specification and model of the vertical turbine submersible pump beneath the conditions allowed by hydrogeology, and determine the reasonable structure of the water source well based on the water inflow capacity of the water source well.
(5) Select the vertical turbine pump based on the total head loss. The diameter, head (stage) and power of the vertical turbine submersible pump are usually selected based on the total head pressure required to pump motor groundwater from the pump motor head to the surface tank or water tower in accordance with the vertical turbine submersible pump motor. The water pressure raises in proportion to the number of impellers flowing through it. The impeller of the vertical turbine pump is immersed within water, only the lift with no suction. The rated head and the exact operating head of the pump motor can not be as well different (public number: pump motor housekeeper), and must not be higher than 25% of the particular head. The pump motor has a high lift and requires a big motor power. It is straightforward to cause the pump to get a sizable upper string. The lighter wears the impeller and the blade shell. The bearing in the shell (the limit function) is an easy task to stick with the pump coupling. The pump will not run and the motor overload winding will burn out.
If a high-head pump is utilized for low head pumping, the flow will inevitably boost, even outside the working range, running under high flow, low efficiency and high energy consumption. On the surface, it would seem that the pumping speed may be increased. Improve the pumping efficiency, however, it will be not worth the reduction. It is not highly recommended to promote it. Because the flow rate of the pump gets to or exceeds the utmost manufacturing of the well, the structure of the outer filter layer will be destroyed. When it comes to light, a big amount of sand will be injected into the well. The close-by ground will sink and may endanger the safety of the well. In addition, the pump has long-term high lift, large flow, low efficiency, high speed operation, and the water flow rate of the pump is accelerated, which may destroy the chemical balance of the groundwater, medications the dissolved substances within the water, and precipitate within the water inlet gap or the gap of the filter tube. Acceleration of fouling, resulting in blockage of the filter, and increased congestion over time, the pump will be corroded and cavitation leading to damage, leading to increased consumption and electricity bills. Therefore, the head of the vertical turbine fire pump must be corresponding to or slightly larger than the total head loss consumed throughout the water supply.