In principle, the impulse steam turbine consists of a casing containing stationary steam nozzles and a rotor with moving or rotating buckets. When the steam passes through the stationary nozzles and is directed at high velocity against the rotor buckets. The rotor buckets starts to rotate at high speed. Events take place in the nozzle…
Information about different hydraulic machines like hydraulic press, hydraulic ram, hydraulic accumulator, hydraulic intensifier, hydraulic crane and hydraulic lift. The following are the miscellaneous hydraulic machines: (a) Hydraulic press. It is a device used to lift larger load by the application of a comparatively much smaller force. It is based on Pascal’s law. The efficiency of…
Air vessel is a closed chamber containing compressed air in the top portion and liquid (or water) at the bottom of the chamber. At the base of the chamber, there is an opening through which the liquid (or water) may flow into the vessel or out from the vessel. When the liquid enters the air…
Inward Flow Reaction Turbine Outward Flow Reaction turbine 01. Water flows the outer periphery of wheel towards the wheel centre and discharges at the inner periphery. 01. Water enters the wheel centre (inner periphery) and flows outward and discharges at the outer periphery. 02. The centrifugal head (U₂² – U₁²)/2 imparted to water as it…
What is cavitation and how is it formed and how to prevent/ avoid cavitation in a hydraulic machine? The formation, growth and collapse of vapour filled cavities or bubbles in a flowing liquid due to local fall in fluid pressure is called cavitation. The cavitation in a hydraulic machine affects in the following ways: (a) It…
What is a centrifugal pump and its manometric head? How to calculate discharge, efficiency and power required for a centrifugal pump using formula? A centrifugal pump is a machine which converts the kinetic energy of the water into pressure energy before the water leaves its casing. The flow of water leaving the impeller is free vortex. The…
Impulse turbine Impulse reaction turbine 01. Steam expands completely in the nozzle. 01. Steam expands partially in the moving blades and partially in the fixed blades. 02. Pressure of steam remains constant during its flow through the blade passages. 02. Pressure of steam is not constant during its flow through moving and fixed blade passages….
Draft Tube is a connecting pipe which is fitted generally at the outlet or exit of turbines which and convert kinetic energy of water at outlet of turbine to static pressure. It helps to avoid wastage of kinetic energy of water that flow from the outlet of turbines.It is generally fitted in the power turbines…
The Hydraulic Power Hacksaw Machine is has been designed by us for quick & accurate cutting of all nickel, chrome, steel and plastic materials. The Hydraulic Control Hacksaw Machines are facilitated with simple & easy controls. When the operation is complete, an automatic cut out operates while the bow slide returns to a position at…
A hydraulic turbine is a machine which converts the hydraulic energy into mechanical energy. The hydraulic turbines are also known as water turbines. Following two types of hydraulic turbines are important. 1. Impulse turbine 2. Reaction turbine In an impulse turbine, the total energy at the inlet of a turbine is only kinetic energy. The pressure of water…