Diaphragm Pumps have a diaphragm as the reciprocating part. The reciprocation of this diaphragm produces the pumping action of the diaphragm pump. The diaphragm can be actuated by liquid or air. Accordingly pumps are called as hydraulically operated or air operated diaphragm pumps.
Reciprocating pumps can have two types of reciprocating part, a piston or a diaphragm and based on this, reciprocating pumps can be piston or diaphragm pumps. Each type has different features suitable for specific applications. Read in this article construction, working and variants of Piston Pumps.
Reciprocating Positive Displacement Pumps has reciprocating parts to pump fluid. During one direction of motion of the reciprocating part fluid or liquid is taken inside and during the other opposite direction of motion fluid is pushed out. Reciprocating part can be a piston or a diaphragm.
Classification of fluid or hydraulic pumps is based on fluid flow pattern through pumps and fluid supplied by pumps. Pumps can be classified as intermittent flow Positive Displacement Pumps and continuous flow Roto-Dynamic or Turbo Pumps. Read more on criteria of classification and different types.
A fluid or hydraulic pump is a machine that transfers energy from its moving parts to the fluid passing through the pump. The energy transferred from the pump to the fluid appears as the pressure and velocity of the fluid. Find more basic details about hydraulic pumps here in this article.
Kaplan Turbine is designed for low water head applications. Kaplan Turbine has propeller like blades but works just reverse. Instead of displacing the water axially using shaft power and creating axial thrust, the axial force of water acts on the blades of Kaplan Turbine and generating shaft power.
Cavitation is formation of vapor bubbles in the liquid flowing through any Hydraulic Turbine. Cavitation occurs when the static pressure of the liquid falls below its vapor pressure. Cavitation is most likely to occur near the fast moving blades of the turbines and in the exit region of the turbines
In Francis Turbine water flow is radial into the turbine and exits the Turbine axially. Water pressure decreases as it passes through the turbine imparting reaction on the turbine blades making the turbine rotate. Read more about design and working principle of Francis Turbine in this article.
In a Pelton Turbine or Pelton Wheel water jets impact on the blades of the turbine making the wheel rotate, producing torque and power. Learn more about design, analysis, working principle and applications of Pelton Wheel Turbine.
Hydraulic Turbines transfer the energy from a flowing fluid to a rotating shaft. A turbine is something that rotates or spins. Learn more about how Hydraulic Turbines work in this article.