What is the main part of radial flow reaction turbine?
Explanation: The main parts in a radial turbine are tight casing to prevent spill of water, runner, guide vanes, guide mechanism to regulate flow and draft to increase inlet pressure.
What are parts of reaction turbine?
Francis turbine rotor typically has nine or more fixed blades. Water enters directly above and around the runner, then the waterfalls and turns the turbine. The other main components are the draft tube, gate, and spiral in addition to the corridor.
What is radial flow reaction turbine?
A radial flow turbine is a turbine where the working fluid flows radially relative to the shaft. Therefore, this is the primary difference between axial and radial turbines due to the direction of the fluid flow through the components.
What are the main parts of Francis turbine?
Main Components of Francis Turbine
- Spiral Casing. Spiral casing is the inlet medium of water to the turbine.
- Stay Vanes. Stay vanes and guide vanes guides the water to the runner blades.
- Guide Vanes.
- Runner Blades.
- Draft Tube.
What is radial reaction?
Water will flow in radial direction in radial flow reaction turbines. Water may flow radially from outwards to inwards or from inwards to outwards. When water will flow through the runner, a part of pressure energy will be changing into kinetic energy. Water flowing through the runner will be under pressure.
Which of the following is the radial flow reaction turbine Mcq?
| Q. | Which of following is inward radial flow reaction turbine? |
|---|---|
| B. | Francis turbine |
| C. | Axial turbine |
| D. | Kaplan turbine |
| Answer» b. Francis turbine |
What are reaction turbine What Are there important component parts and what are there functions?
The regulating shaft is operated by a governor whose function is to govern the turbine. Governor function is to keep the speed constant at varying loads. Guide vanes are generally made of cast steel. The rotating wheel of the reaction turbine is known as runner.
What are the parts of impulse turbine?
Impulse turbines are composed of the following components.
- Runner. The runner consists of a circular disk to which a number of curved blades are attached and a cylindrical shaft in the center.
- Buckets.
- Nozzle.
- Casing.
- Penstock.
- Pelton.
- Turgo.
- Cross-Flow.
How many types of radial flow turbines are there?
There are two types of inward-flow radial turbines: the cantilever and the mixed-flow types. The cantilever type as shown in Figure 1-79 is similar to an axial-flow turbine, but it has radial blading.
What are the 5 main components of Francis turbine?
A Francis Turbine consists of the 5 main parts those are:
- Spiral Casing.
- Stay Vanes.
- Guide Vanes.
- Runner Blades.
- Draft Tube.
What is Francis reaction turbine?
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. Francis turbines are primarily used for electrical power production.
How does a radial flow turbine work?
Function of the Radial Flow Gas Turbine Flow enters the centrifugal compressor axially, is turned toward the radial direction and is compressed by the rotating blades of the centrifugal compressor. The flow exits the compressor section and enters the stator disk radial flow combustion section.
What are the components of a radial flow reaction turbine?
Main parts of a radial flow reaction turbine 1 Casing 2 Guide Mechanism 3 Runner 4 Draft-Tube More
Where are the vanes on a flow radial turbine?
The turbine is located between the high-pressure water source and the low-pressure water exit, usually at the base of a dam. The inlet is spiral shaped. Guide vanes direct the water tangentially to the turbine wheel, known as a runner. This radial-flow acts on the runner’s vanes, causing the runner to spin.
When does water flow through a reaction turbine?
Reaction turbine means the water, at the inlet of turbine, will have kinetic energy and pressure energy. When water will flow through the runner, a part of pressure energy will be changing into kinetic energy. Water flowing through the runner will be under pressure.
Are there any problems with a radial outflow turbine?
A flow path in the reverse direction (radial outflow), for a single-stage turbine anyway, creates several problems, one of which (discussed later) is low specific work. However, as pointed out by Shepherd (1956) radial-outflow steam turbines comprising many stages have received considerable acceptance in Europe.