Multistage Centrifugal pumps are the most preferred Hydraulic
pressure system used in domestic and industrial areas. Many Hydraulic pressure
systems employ centrifugal pumps to move fluid through a piping system. These
pumps all rely on centrifugal force as the fundamental principle by which they
operate. A few fundamental characteristics of the centrifugal pump are listed
here in order to make the functioning more clearly: The centrifugal pump is a dynamic
pump and works by creating kinetic energy. Its main part is the impeller, which
is really the driving force behind the creation of kinetic energy. The
impellers may use either a single shaft to mount impellers over, or it may have
different shafts as well. These are
capable of discharging large amount of fluid being pumped. The impeller of the
centrifugal pump is available in both straight vanes and curved vanes to suit
the pumping requirement as the case may be. The impeller is fitted inside a
casing. As a result the water moves out will be collected inside it, and will
move in the same direction of rotation of the impeller, to the discharge
nozzle. The centrifugal pump is not a self-primed machine. It needs to be
filled with liquid first and then set to operate. The pump drive is located
outside the tank and can be electric, hydraulic or any appropriate means
suitable for the location.
There is another type of centrifugal pump available, which
has two or more impellers assembled with it. This type of the centrifugal pump
is known as the multistage centrifugal pump. The design structure although may
differ. Most centrifugal pumps rely on rotating impellers or vanes to provide
rotary motion, though the design and implementation of these systems can vary
according to capacity and project requirements. At the heart of the system lies
impeller. It has a series of curved vanes fitted inside the shroud plates. The
impeller is always immersed in the water. When the impeller is made to rotate,
it makes the fluid surrounding it also rotate. Pumps of this kind create an
advanced pressure discharging a larger quality of liquid. Pumps with high heads
have connected series of impellers
Types of Impeller
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