Francis Turbine

welcome to the video tutorials of mechanism Euler this animation authored by dr. Sehun air soy is the property of the client GDF SUEZ and subject to copyright limitations we thank gdf SUSE for giving us the permission to publish this video there are three major types of water turbines the Pelton turbine requires large water head and low flow rate and the kaplan turbines require low water head but large flow rate the Pelton turbines usually built in mountainous regions while the kaplan turbines are located in lowlands these restrictions make these two kind turbines less common than the Francis turbine the Francis turbine fills a large gap between the Pelton and kaplan and it is widely used they operate in water head from ten to 600 meters and primarily used for electric power generation their power output can be calculated from the water head and flow rate and typically range from 10 to more than 700 megawatts one of the distinct advantages of the Francis turbine with respect to other water turbine is that they can also be used as water pump this makes them ideal for the pump storage systems this animation shows the operation of a Francis turbine in a dam the arrows show the water path and direction inside the dam the water from reservoir behind the dam transferred to the turbine by a penstock the penstock diameter of a Francis turbine could be as large as 10 meters the water coming from the penstock is transferred to the inlet scroll which distributes the water equally around the wicket gates water passes through the wicket gates which controls the amount of water passing through the turbine before reaching to the runner this in effect controls the power output of the dam wicket gates also adjust the angle of the water reaching to the runner after passing through the wicket gates the water reaches to the runner the water pressure forces the runner to rotate the rotation speed of the runner can be in the range of 80 to 1000 revolution per minute the water continues its motion downward under the runner to the exit pipe the exit pipe discharges the water to the environment as low-pressure water the turbine shaft of the Francis turbines is almost always mounted vertically this makes discharge of the water much easier due to swirling effect of the water in the inlet scroll and the effect of the gravity the rotation motion of the runner is transferred to an electric generator shown in here the generated electricity is converted to high voltage current and transferred to the grid to be consumed one big advantage of the water turbines is that power output can be regulated very easily if the demand is reduced the amount of water flowing to the turbine can be reduced relatively short period of time we thank our client GDF SUEZ giving us the permission to publish this video we also thank our viewers for their continuing support of our channel

Channel: mekanizmalar

Views: 710,155

Rating: 4.7381206 out of 5

Keywords: Francis Turbine, Pelton Turbine, Kaplan Turbine, Water Turbine, Green Energy, Power Generation

Id: JD4VkzHk6rk

Length: 3min 42sec (222 seconds)

Published: Wed May 15 2013