Pelton turbine presentation

The runner are made of cast steel, cast iron or stainless steel. Three most popular hydraulic turbines are : Pelton wheel Pelton turbine Kaplan turbine Propeller turbine Francis turbine 4 November 3 Classification of Water Turbines Based on action of water: Impulse turbine — pelton wheel.

characteristics of pelton turbine

It surrounds the runner completely. The high speed jet of water hits the buckets vanes on the wheel and causes the wheel to rotate.

Pelton turbine formula

Download ppt "Pelton Wheel is an example of such turbine. The basic principle is the same as a rotating lawn sprinkler in which water enters the arms of the sprinkler at low velocity and leaves through the jets at high velocity. The water is guided by the guide blades to flow over the runner vanes. Its shaft is vertical. Turbines classification based on how they operate Impulse Turbines and Reaction Turbines. Pelton turbine Reaction turbine e. The casing is usually made of cast steel, plate steel, concrete etc. It is used when the head is between 80 to metres.

Guide mechanism 3. Its wheel has many curved blades called runner vanes as many as The guide vanes and stay vanes control the amount of water flowing into the runner vanes.

Pelton wheel turbine project report pdf

The energy available at the inlet of the Pelton Turbine is only Kinetic Energy The Pressure Energy of water is converted into Kinetic Energy when passed through the nozzle and forms into a high velocity water jet. Reaction turbine generally produces more power than an impulse turbine. The guide vanes and stay vanes control the amount of water flowing into the runner vanes. Its shaft is vertical. The guide vanes allow the water to strike without shock on the vanes which are fixed on the runner. This water jet is used for driving the Pelton Turbine or Pelton Wheel. The spear is a conical needle , moving inside the nozzle will controls the amount of water flow through the nozzle and thereby regulating the amount of water striking the runner. A spear rod which has a spear shaped end can be moved by a hand wheel. Casing 2. Water falls towards the turbine through a pipe called penstock and flows through a nozzle. Unlike impulse turbine, the water completely fills the casing of a reaction turbine. It is a mixed flow reaction turbine.

The casing is usually made of cast steel, plate steel, concrete etc. The function of the casing is to prevent the splashing of the water and to discharge the water to the tail race.

Newton's third law describes the transfer of energy for reaction turbines.

Kaplan turbine ppt

Guide mechanism 3. Water falls towards the turbine through a pipe called penstock and flows through a nozzle. Turbines classification based on how they operate Impulse Turbines and Reaction Turbines. Pelton turbine Reaction turbine e. Kaplan Turbine are used when large quantity of water at low head is available. The basic principle is the same as a rotating lawn sprinkler in which water enters the arms of the sprinkler at low velocity and leaves through the jets at high velocity. The water is discharged to the tail race through a pipe or tube of gradually increasing area called the draft tube. Its shaft is vertical. It is a mixed flow reaction turbine.

The water is guided by the guide blades to flow over the runner vanes.

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Basic Mechanical Engineering