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Workshop For Turbine Presentation Transcript
1.WORKSHOP FOR TURBINE
BHEL ET,S
BHEL ET,S
2.De Laval
Parson
Curtis
Rateau
Parson
Curtis
Rateau
3.THEY ARE THE PIONEERS
& INVENTORS OF TURBINE
HATS OFF TO THEM
& INVENTORS OF TURBINE
HATS OFF TO THEM
4.TURBINE FLEET IN NTPC
Steam Turbines of Following OEM,s are running in NTPC
LMZ ( Russia)/BHEL
KWU, Siemens ( Germany)/BHEL
ABB-Alstom (Germany)
GEC- Alstom ( U.K)
SKODA, (Chezkoslovakia)/BHEL
MHI ( Japan)
GE (USA)
ANSALDO ( Italy)
Steam Turbines of Following OEM,s are running in NTPC
LMZ ( Russia)/BHEL
KWU, Siemens ( Germany)/BHEL
ABB-Alstom (Germany)
GEC- Alstom ( U.K)
SKODA, (Chezkoslovakia)/BHEL
MHI ( Japan)
GE (USA)
ANSALDO ( Italy)
5.WORKING OF STEAMTURBINE
A steam turbine works on the principle of conversion of High pressure & temperature steam into high Kinetic energy , thereby giving torque to a moving rotor.
For above energy conversion there is requirement of converging /Converging-Diverging Sections
Such above requirement is built up in the space between two consecutive blades of fixed and moving blades rows.
A steam turbine works on the principle of conversion of High pressure & temperature steam into high Kinetic energy , thereby giving torque to a moving rotor.
For above energy conversion there is requirement of converging /Converging-Diverging Sections
Such above requirement is built up in the space between two consecutive blades of fixed and moving blades rows.
6.TYPE OF TURBINE
IMPULSE TURBINE = In a stage of Impulse turbine the pressure/Enthalpy drop takes place only in Fixed blades and not in the moving blades
REACTION TURBINE = In a stage of Reaction Turbine the Pressure/enthalpy drop takes place in both the fixed and moving blades.
IMPULSE TURBINE = In a stage of Impulse turbine the pressure/Enthalpy drop takes place only in Fixed blades and not in the moving blades
REACTION TURBINE = In a stage of Reaction Turbine the Pressure/enthalpy drop takes place in both the fixed and moving blades.
7.DEGREE OF REACTION=
( Heat drop in Moving stage)
( Heat drop in moving blade + Heat drop in fixed blade)
In impulse stage ,degree of reaction is O
Single stage impulse turbine is called as De-laval Turbine.
Series of impulse stages is called as Rateau Turbine
Double Stage Velocity Compounded impulse turbine is called as Curtis Stages
50% Reaction turbine is called as Parson Turbine
Practically the degree of reaction of a stage can be 0 - 60% over the different stages of a turbine
( Heat drop in Moving stage)
( Heat drop in moving blade + Heat drop in fixed blade)
In impulse stage ,degree of reaction is O
Single stage impulse turbine is called as De-laval Turbine.
Series of impulse stages is called as Rateau Turbine
Double Stage Velocity Compounded impulse turbine is called as Curtis Stages
50% Reaction turbine is called as Parson Turbine
Practically the degree of reaction of a stage can be 0 - 60% over the different stages of a turbine
8.Velocity Compounded Turbines Here the High temperature, Pressure Steam is expanded in a single row of fixed blades into very high velocity which is then fed to 2 or 3 rows of moving blades with one each guide/turning row placed in between the two moving stages.
Pressure compounding Turbines Here the pressure is dropped in stages and employs low velocity of Steam in each stage. Each stage consists of Fixed blade( nozzles) and moving blades .
Pressure compounding Turbines Here the pressure is dropped in stages and employs low velocity of Steam in each stage. Each stage consists of Fixed blade( nozzles) and moving blades .
9.All the Steam turbines in NTPC are PRESSURE COMPOUNDED ,Except the 110 MW Skoda make steam Turbine at Tanda ,Muzaffarpur and Talcher ,where two stage Velocity compounding impulse rows are there at the inlet of HP Turbine.
The LMZ Turbines of 210 MW has one pure impulse in the first stage which is also the controlling stage.
The LMZ Turbines of 210 MW has one pure impulse in the first stage which is also the controlling stage.
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