File Name: impulse and reaction steam turbine .zip
- Steam Turbine | Working Principle of Impulse and Reaction Steam Turbine
- US813169A - Combined impulse and reaction turbine. - Google Patents
- Steam turbine
Steam Turbine | Working Principle of Impulse and Reaction Steam Turbine
According to this invention it is proposed to construct the drum or portion of the shaft carrying the various blades in a combined impulse and reaction turbine of uniform di ameter, or nearlv so, over the entire length occu ied by the inganges. The subdivision of the reactionturbine is calculated in such a manner that the two opposed end pressures resulting therein counterbalance each other, and the shaft of the turbine is therefore freed from end thrusts. The impulse-blades are continued until that portion of the turbine is reached at which the full etlect of the actuati which Ira bying fluid on the blades is obtained. In the accompanying drawing. By means of the arrangement described it is possible to have a smooth drum for all the ,blades in common and of c ual, or nearly equahdiameter throughout, w iich drum may be easily produced from a tube of suitable material, such as wrought-iron or the like. Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States of America, is. In an impulse and reaction turbine, the combination of a drum of approximately equal diameter throughout its length, a stepped casing in which said drum rotates, a series of impulse-blades carried by said drum and casing, a series of reaction-blades also carried by said drum and casing and forming I a continuation of the impulse-blades and a furthcr series of reaction-blades oppositely arrnn ed to the first series.
US813169A - Combined impulse and reaction turbine. - Google Patents
The main differences between Impulse and Reaction turbines are, all hydraulic energy is converted into kinetic energy by a nozzle in the Impulse turbine and whereas In Reaction turbine Only some amount of the available energy is converted into kinetic energy. Before moving to further detailed explanation lets have some overview of Impulse and Reaction Turbine. Note: At the bottom of every article the PDF link is attached make sure if you want you can easily download. The impulse turbine changes the velocity of the water jet. The jet impinges on the turbine curved blade which changes the direction of the flow. The resulting change in momentum impulse causes a force on the turbine blades. Since the turbine is spinning, the force act through a distance work and the diverted water flow is left with diminished energy.
The main difference between Impulse and Reaction turbine is that the Impulse turbine works at atmospheric pressure and Reaction Turbine works at above atmospheric pressure. I have listed a total of 21 points on differences for you easy to understand. I have explained in simple and understandable words. You can score maximum marks in your exam or interview on these topics.
There are two main types of turbine, the 'impulse' and the 'reaction'. The names refer to the type of force which acts on the blades to turn the turbine wheel. The impulse arrangement is made up of a ring of nozzles followed by a ring of blades. The high-pressure, high-energy steam is expanded in the nozzle to a lower-pressure, high-velocity jet of steam.
Compounding of steam turbines is the strategies in which energy from the steam is extracted in a number of stages rather than a single stage in a turbine. A compounded steam turbine has multiple stages i. Compounding of steam turbine is used to reduce the rotor speed.
A steam turbine consists of a rotor resting on bearings and enclosed in a cylindrical casing. The rotor is turned by steam impinging against attached vanes or blades on which it exerts a force in the tangential direction.