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Turbine

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Published in: Mechanical
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Presentation on Turbine

Trinity A / Chandigarh

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Teaches: Indian National Mathematical Olympiad (INMO), Mental Maths, Olympiad Exam Preparation, Regional Mathematical Olympiad (RMO), Advanced Excel, Basic Computer, MS Office, School Level Computer, Mathematics, Statistics, Science, Social Studies, B.Tech Tuition, Drawing, Mechanical, AutoCAD Training, French, German, Study in Germany

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  1. TURBINE COOLING SYSTEM
  2. DEFINITION A Turbine is a Form of Engine Requires a suitable working fluid •n order to function- a source of High Grade Energy and a Sink for ow Grade energy. When a Fluid Flows through the Turbine , Part o e rgy Content is Continuously Extracted and Converted in to Useful mechanical Work.
  3. PRICIPLE OF STEAM TURBINE Steam turbine depends completely upon the dynamic action of the steam. According to Newton's second law of motion, the FOR E is proportional to the rate of change of MOMENTUM (mass x velocity). If th rate of change of momentum is caused in the steam by allowing a high velocity jft f steam to pass over curved blade, the steam will impart a force to the blade. If t e lade is free, it will free off (rotate) in the direction of force. The steam from the boiler is expanded in a passage or nozzle , where due to fall in pressure of steam is converted into Kinetic energy of eam & this KE of steam is converted into work moving blade
  4. TYPES OF TURBINE On the basis of principle of operation Impulse turbine Reaction turbine Impulse- Reaction turbine Impulse Turbine .. In impulse the drop in pressure of steam takes plac o ly in nozzle & not in moving blades. This is obtained by making the blade pas"ge of constant cross section area it may be noted that energy transformation takes place only in nozzles. Moving blades only cause energy transfer.
  5. Reaction turbine:- Pressure drop take place in rotor (M.B.). En rgy transformation takes place in rotor. Energy transfer only in rotor. Impulse- Reaction turbine:- In this turbine drop in pressure of steam takes place in fixed blade as well as moving blade. It may be noted that energy transformation occur in both fixed blade & moving blade. The rotor blade cause energy transfer & energy transformation.
  6. COMPOUNDING Compounding of Impulse turbine : One row of nozzles followed by one row of b ades is called a stage of turbines. Compounding is a method for reducing the rotational speed of the impulse turbl e to practical limit. Boiler pressure down to condenser pressure in a single stages so high RPM & large diameter of turbine. Three type of compounding Pressure compounding Velocity compounding Pr & velocity compounding
  7. COOLING SYSTEM
  8. CIRCULATING WATER SYSTEM INTRODUCTION . Circulating Water system supplies cooling water to the turb ne condenser. . It is used to maintain the vacuum in the condenser.
  9. Types of Circulating water sys 1. Open or Once Through It is used when there is a large source of water avai e.g.- river , ocean. 2. Closed Cooling system ble. In this system, warm water from condenser is passed through a cooling device, like cooling tower.
  10. Filter cw Pump Exhaust Stem from Tur ine Condenser Condensate Condensate Pump Hot water River Open or Once Through
  11. Exhaust Stem from Tur ine Condenser Condensate to boiler Cooling water Hot water cw Pump Condensate Pump ot air Cooling Tower 00 Closed Cooling system O Make up water from river
  12. Cooling tower It cools the warm water discharged from the condenser & fee the cool water back to the condenser. It reduces the cooling water demand in the power plant.
  13. Types of cooling tower 2. Natural Draught Cooling Tower Mechanical Draught Cooling Tower A. Forced Draught Cooling Tower B. Induced Draught Cooling Tower
  14. Losses in cooling tower 1, Evaporation Losses 2, Drift Losses 3, Blowdown Losses
  15. TURBINE LUBEOILS STEM I.FLOW DIAGRAM OF LUBE OIL SYSTEM 2.NECESSITY OF LUBE OIL SYSTEM 3.COMPONENTS OF LUBE OIL SYSTEM 4.FUNCTIONS OF INDIVIDUAL COMPONENTS OIL 5.FLOW TO DIFFERENT BRANCHES 6.FIRE PROTECTIONS
  16. NECESSITYOFWBEOILSYS M Lubrication : To supplies oil to the bearing to f r a film of oil as the shaft rotates. Temperature control : To maintain temperature f he bearing. Sealing medium : Generator shaft. Jacking of shaft : To the prevent 1-12 leak out along th Supply to jacking device.
  17. COMPONENT LUBE OTL SYS The system mainly consists of Main oil pump, B main oil tank, AC lubricant pump, DC emergency il pump,MSP, spill valve, oil cooler, Transfer valve, il smoke separator, shaft jacking up device, oil hydrogen separator, oil level indicator as well as connecting line , monitoring instruments, etc!
  18. Main Oil Tank The oil tank adopts a combination mode as va i us devices allocated on the tank as AC lube oil pump, DC emergency oil pump, Oil smoke separator, Oil level indicator, Electric heater, Spill valve, BOP MSP
  19. SEAL OIL SYSTEM INTRODUCTION Hydrogen is used for the cooling of generator rotor. Hydrogen i s much explosive when it come into contact with air . To save this h d ogen from explosion we need sealing of this hydrogen. For this pu p se we generally use oil. This sealing is very much similar to sealing of he pump on its gland.
  20. The functions of the seal control system Providing seal oil to a sealing continuously oil Prevent the escape of hydrogen gas from the generator at t e oint of rotor exit . A continuous film between the rotor collar and se I liner is maintaining by means of oil at a pressure which is slig tl above then hydrogen pressure.
  21. STATOR WATER COOLING SYSTEM FUNCTION The Stator Coil Cooling Water System main function IS guarantee cooling water uninterrupted flow into Qat r coil. At the same time, the system also must control enter the stator coil water pressure , flow, temperature, conductivity
  22. System consists of 2 Motor driven pumps, 2 Coolers, 2 Filters and 1 mixed Bed type Ion Exchanger,
  23. EE OF Gen. Hot water output to Expansion tank Turbine end Teflon tubes Generator Winding TE of Gen Expansion tank Cold water e ter Ex itation End

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