Booster pumps rely on an electric motor as the driver for the pump shaft and propeller.
Depending on the application, booster pumps rock electric motors with speed ranging from 1450 to 2900 rpm. In multi-pump booster pumps, two or more electric pumps are placed on the main platform side by side.
Another point to consider when selecting an electric motor for a booster pump is the IP rating for protection against foreign bodies such as dust and water.
The main drive behind fluid circulation is the pump and its function with appropriate head, discharge, and inlet and outlet diameters. The materials of which the propeller and the casing are made of are also of great significance when it comes to selecting a pump.
This component is connected to the electric pump suction and the outlet of the storage tank by the fittings and faucets below.
Cut-off valves: Used in the case where a pump needs to be cut out of the circuit, these valves can stop the flow. Often, cast-iron valves are used in larger booster pumps and brass ones in those smaller than 3 in.
Strainer: Strainers are used to prevent the intrusion of particles and suspended solids in the fluid to the pump and damaging it.
Vibration damper: Using dampers prevents the transfer of pump vibrations to the pipe network.
Flange: Depending on the type and volume of the booster pump ,a welded or a threaded flange is used to connect the different components.
Similar to the suction, the discharge from the electric pump outlet is connected to the pipe network by fittings and faucets.
Check valve: A check valve is placed across the discharge of the booster pump to eliminate any possibility of the water returning and causing hydraulic shocks.
Flange and the union nut
Core and the converter
5.Electrical Enclosure and Control Panel
The electrical enclosure is responsible for controlling and coordinating the mechanical and electrical components of the booster pump, and its design is critical in its correct function.
The electrical enclosure must be safety-approved and be protective of the electric motors and pumps against such issues as electric surges, changes in the rpm or the functional order of the motors, and dry running.
The PLC is responsible for controlling the booster pump to supply the pressure and discharge required by the system in a way that minimizes depreciation by an equal distribution.
The manometer is tasked with measuring the input and output fluid pressure of the booster pump and displaying the pressure in each pump.
The pressure switch controls the minimum and maximum functional pressures and specifying the allowable working pressure range.
This piece of equipment is used in variable-speed booster pumps for a fixed control over water pressure.
In the case where the pump and electric motor are not coupled with the coupling system, a coupling, in proportion to the size of the electric motor and pump shaft diameter, is required to connect the pump to the electric motor.
All components of the booster pump, including the pump and the electric motor, electrical enclosure, and suction and discharge tube and fittings are housed on an integrated, robust platform that prevents vibrations as well.
Due to the incompressibility of water, water pressure must be maintained constant for the pump to circulate it in the system. The task can be assigned to a pressurized diaphragm tank to store water at a specific pressure.
On the other hand, the storage tanks can prevent unnecessary switching of the pumps and the stresses exerted on the piping system by hydraulic shocks.
Even though in inverter-free booster pumps, the need for the diaphragm tank can be eliminated using a jockey pump, the simultaneous use of the jockey pump with the diaphragm tank can manage to reduce the repeated switching of the main pumps considerably.