Main Components of Kaplan Turbine
- Scroll Casing. It is a spiral type of casing that has decreasing cross section area.
- Guide Vane Mechanism. It is the only controlling part of the whole turbine, which opens and closes depending upon the demand of power requirement.
- Draft Tube. Ad.
- Runner Blades.
What are the main features in Kaplan turbine?
The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level.
Which type of turbine is Kaplan?
A Kaplan turbine is basically a propeller with adjustable blades inside a tube. It is an axial-flow turbine, which means that the flow direction does not change as it crosses the rotor.
How many blades are in Kaplan turbine?
Kaplan turbine has adjustable runner blades. Kaplan Turbine has a very small number of blades 3 to 8.
What is the difference between Kaplan and Francis turbine?
General differences between Francis and Kaplan turbines Kaplan turbine is more compact in cross-section and has lower rotational speed to that of Francis turbine. In Kaplan turbine, the water flows axially in and axially out while in Francis turbine it is radially in and axially out.
What is Kaplan turbine in fluid mechanics?
Kaplan turbine is an axial flow reaction turbine. So the working fluid changes the pressure as it moves across the turbine and gives energy. The remaining kinetic energy gets converted into pressure energy and hence increases the pressure of water.
Is Kaplan turbine axial flow?
Kaplan turbine is an axial flow reaction turbine. So the working fluid changes the pressure as it moves across the turbine and gives energy. Power recapitulates from both the Hydrostatic head and kinetic energy of the following water. From the penstock, the water is coming to enter into the casing.
What is the type of flow in Kaplan turbine Mcq?
In a Kaplan turbine, what is the direction of water flow? Explanation: The Kaplan turbine is an axial flow reaction turbine. The water inlet is axial and the water outlet is axial too.
What is Hub in Kaplan turbine?
Kaplan Turbine is an axial reaction flow turbine and has adjustable blades. When the water flows parallel to the axis of the rotation of the shaft, the turbine is known as the axial flow turbine. The lower end of the shaft is made larger which is known as a hub or boss.
How is Kaplan turbine different from a propeller turbine?
The difference between the Propeller and Kaplan turbines is that the Propeller turbine has fixed runner blades while the Kaplan turbine has adjustable runner blades. The kaplan’s blades are adjustable for pitch and will handle a great variation of flow very efficiently.
What is the specific speed of Kaplan turbine?
The specific speed of Francis turbine is in the range of 60-300….The specific speed of Kaplan/propeller turbine is greater than 300.
| Turbine | Ns |
|---|---|
| Kaplan | > 300 |
What is the speed ratio of Kaplan turbine?
Explanation: A Kaplan turbine requires a speed ratio of 2. Kaplan Turbine: If the water flows parallel to the axis of rotation of the shaft, the turbine is known as an axial flow turbine.
What are the main parts of Kaplan turbine?
Main Parts of Kaplan Turbine: 1 Scroll casing: The scroll casing is a spiral type of casing that decreases the cross-section area. First, the water from the penstocks enters the 2 Guide Vanes Mechanism: 3 Hub with vanes or Runner of the turbine: 4 Draft Tube:
Where is the upthrust force in Kaplan turbine?
It is located between the high-pressure water source and the low-pressure water exit. In Kaplan turbine work output is occurs from turbine blades as water flows through the blades, an upward force is generated in the opposite direction of water movement. This upthrust force help in the rotation of blades.
What is a propeller turbine?
It is also called as propeller turbine and evolved from the Francis Turbine. It is capable of working at low head and high flow rates very efficiently which is impossible with Francis turbine. The working procedure, main components and its application is discussed in this article. 1. Scroll Casing
What is guideguide vanes mechanism in turbine?
Guide Vanes Mechanism is the unique, controlling part of the whole turbine, which opens and closes based on the power demand. When more power output is required, it opens more to let more water hit the rotor’s blades. And when the output required power is low, it closes to stop the flow of water.
