A PPT on Pelton turbine, It describe about it's working principle.

The principal of pelton turbine.

1. Pelton Turbine Presented By Vikas Kumar

2. It is Impulse type of Water Turbine. It was invented by LA Pelton in 1870 S It extracts energy from impulse of moving water. There are many other turbine but Pelton turbine is most efficient among them. Inroduction

3. Impact Of Jet

4. Dam store water at its one side when water level is increased at a specific height then the gates of the dam is open and water start to flow through the pen stock. Nozzle at the end of the pen stock convert this high speed water into a water jet which on striking the bucket convert its kinetic energy into the rotation energy of the buckets and the runner. Runner is attached to the shaft which is further attached to a generator. Rotating runner rotates the shaft which rotates the generator .  WORKING

5. PENSTOCK Penstock is a solid pipe which take water from the dam( structure which store water on its one side) and take it to the turbine at very high Speed. Parts of Pelton Turbine

6. SPEAR A spear is provided with in the pen stock and its main function is to increase and decrease the speed of water entering into the turbine. If more water is needed spear move back and allow more to enter into the turbine and if less water is needed spear moves forward to spot excess water from entering in to the turbine.

7. Nozzle is provided at end of pen stock and its main function is to increase the velocity of the water and to direct it to the buckets of the turbine . NOZZLE

8. Each pelton turbine has a specific number of buckets attached to its runner. Buckets take the impact of water and start to rotate along the runner. BUCKETS

9. Runner is a heavy Circular disc on which bucket are attached. Runner is further attached to Shaft. RUNNER

10. When turbine is need to be stopped then water is thrown at the back of the buckets from another nozzle called brake nozzle. BRAKE NOZZLE

11. CASING

12. The whole setup of the turbine is enclosed in a structure called the casing of the turbine.

13. Most efficient of all turbines High overall efficiency Easy assembly  Operate at low discharge ADVANTAGE

14. Decrease in efficiency with time Components have large size Variation in the operating head is very difficult to control DISADVANTAGE

15. Velocity Traingle .

16. Efficiency Calculation.

17. ThankYou