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The turning gear main motor and piggy motor in a steam turbine are used for maintaining the turbine's rotation during startup and shutdown phases. The turning gear main motor provides slow rotation of the turbine shaft to ensure proper lubrication and prevent thermal stress on the components. The piggy motor, often a smaller auxiliary motor, assists in this process by allowing for fine adjustments or providing additional support during low-speed operations. Together, they help maintain the integrity and longevity of the turbine system.
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What is servo motor in steam turbine?
it controls the over pressure of the water
What is warm rolling of steam turbine?
You don't start a large turbine cold. Typically, the lubrication system is started, the turning gear is engaged and warming steam (a small amount of steam, not enough to turn the turbine) is admitted to the turbine to warm and initially expand the shaft and casing. If this isn't done, thermal shock from the admission of high pressure superheated steam into the cold turbine could damage it.
Why would you not heat the steam coming out of turbine and feedback to turbine?
Steam is redirected back into the boiler from the high-pressure turbine for reheating, but the steam from the low-pressure turbine enters into a condenser to become water again.
What is heat rate of steam turbine How to calculate heat rate of steam turbine?
manish
What is positive axial displacement of steam turbine?
axial shift of a steam turbine is the shifting of turbine rotor in the forward and backward direction due to steam thrust on blades of rotor.
How did the steam boat work?
A steam boat uses superheated water (steam) to turn a turbine. This turning turbine thereby is connected to a engine that uses mechanical means to turn a propeller.
What is servo motor in steam turbine?
it controls the over pressure of the water
What is basic principle Steam power plant?
There's a boiler which produce steam. Steam drives/turns the turbine. The turbine is connected to the alternator rotor via a shaft. Turning the rotor then generate electricity.
What is warm rolling of steam turbine?
You don't start a large turbine cold. Typically, the lubrication system is started, the turning gear is engaged and warming steam (a small amount of steam, not enough to turn the turbine) is admitted to the turbine to warm and initially expand the shaft and casing. If this isn't done, thermal shock from the admission of high pressure superheated steam into the cold turbine could damage it.
Why extraction taken from steam turbine?
Why extractions are taken out from steam turbine.
What does steam do to a turbine?
Steam (under pressure) comes into contact with the blades of the turbine through which it is flowing and, by the direct application of force, causes the blades to move, turning the turbine shaft. The turbine coverts the thermal energy of the steam into (rotating) mechanical energy. Surf on over to our friends at Wikipedia using the provided link and get more info. Oh, and check out the pics! Answer it depends what type of turbine one is using types of steam turbine 1 impulse turbine 2 reaction turbine in 1 st one steam is completely expanded inside nozzle and all pressure energy get converted in to kinetic energy using this impulse force turbine runs. in 2nd steam is multiple stage blades are used where high pressure superheated steam gets expanded inside the turbine in each stage and after each stage velocity of steam increases. very high temperature superheated steam is reaquired because it has very high specific volume which helps in reducing mass flow rate of steam.
Why would you not heat the steam coming out of turbine and feedback to turbine?
Steam is redirected back into the boiler from the high-pressure turbine for reheating, but the steam from the low-pressure turbine enters into a condenser to become water again.
What are the preventive maintenance of steam turbine?
The preventive maintenance of steam turbine mainly entails frequent servicing of the parts. This will ensure a smooth performance of the steam turbine.
What is heat rate of steam turbine How to calculate heat rate of steam turbine?
manish
What type of cycle used in steam turbine?
Rankine cycle is used in steam turbine
Steam turbine turning gear?
Steam Turbine Turning Gear - Turning gear is utilized on turbines to reduce eccentricity or out of round of the rotor. When a rotor is standing still it has a tendency to sag due to its weight. While running a turning gear which is a separate motor that turns the rotor slowly 10-50 RPM through a clutching mechanism. This rotation keeps the rotor in balnace. It is very important to run the turning gear on shutdowns and start ups. The time required to run is dependent on the size of your unit. Typically the turning gear must be on for 12-36 hours for small to large steam turbins after shutdown and 2-16 hours prior to a turbine start. If a turning gear is not utilized the rotor will become eccentric and may cause vibration up to wiping rotating parts with the stationary parts causing catastrophic failure. Steamengineer @ Gmail
Why you are maintain the vacuum in steam turbine explain me briefly?
why we are maintain vacuum in steam turbine at steam outlet or exhaust side
