0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is jacking oil required when stopping steam turbines?
jacking oil is not required when stopping the steam turbine
Why turbine is used in turbine mounted pumps?
turbine is considered there as a prime mover.this turbine will be driven bt STEAM OR HYDRAULIC OIL OR ELECTRICALLY so that when it is coupled with a pump it works creating a pressure or vaccum enough to pump the fluid.
How does jacking oil pump work in turbine?
A jacking oil pump also called a lift pump is commonly used on rotor shafts of steam driven Turbine Generators prior to startup or after shutdown to provide even cooling of the shaft and eliminate rotor distortion caused by sags due to weight and bows due to uneven cooling. The jacking oil pump uses high pressure oil supplied at the bearing journals to initiate an oil film and lift the shaft off its bearings. The rotor can then be put on a turning gear and rotated slowly to create even cooling and or roll out any distortions caused by the weight of the shaft while at rest. It also helps to maintain the oil film between shaft and the bearing till the rotor speed is adequate enough to maintain the film thickness and protects the shaft & bearing.
What is a steam turbine jacking oil system?
at the time of turbine start up, the shaft journals are in contact with the white metal of the bearings due to the weight of the rotor. The low pressure of the lubricating oil supply when the set is stationary is insufficient to stop the metal to metal contact between journals and bearing shells. In order to prevent the metal to metal contact between journal and bearing shell during start up, which is damaging in the long term, an oil pocket machined into the bottom shell of the journal bearing is supplied with oil under high pressure. This lifts the shafting system slightly and it floats on a film oil. this is called jacking oil system of turbine
How do you start turbine without jacking oil pump?
Jacking oill pumps are fairly new in the power industry. They are necessary today because of the large turbines with multiple low pressure shells. The longer the rotor the more likely to do damage to it as it rolls off of turning gear. The turbines containing only two low pressure wheels can be started with an auxiliary oil pump that supplies higher pressure than turning gear pumps. Most large turbines have been retrofitted with lift pumps because they prevent damage to the rotor and journals.
What is scoop coupling?
Scoop coupling is nothing but a fluid coupling works based on the hydro dynamic principle. Scooping is the collecting the oil from the working chamber(space between pump wheel and turbine wheel) which will effects the transmission.
What if your oil change indicator no longer works on 2004 impala?
change the oil pump sensor.
How can you check if oil pump works if the oil pressure gage does not work on a 1996 ford thunderbird?
Run your engine for awhile, if it seizes up, the pump wasn't working.
Why does your 1995 Honda accord have an oil leak after radiator change?
The jacking point was the oil pan?
How do you control the control oil line vibrations in steam turbine?
If,clamp is not proper fitted in control oil line that time it may happen cause in control oil line pressure also more than main oil pump disch.
How Does Torque Converter Works on Tractor Head?
It does not connect to the head. The torque converter connects directly to the crankshaft of the engine. IA torque converter is a modified form of fluid coupling that is used to transfer rotating power from an internal combustion engine or electric motor, to a rotating driven load. Like a basic fluid coupling, the torque converter normally takes the place of a mechanical clutch. In a torque converter there are at least three rotating elements: the pump, which is mechanically driven by the engine; the turbine, which drives the load; and the stator, which is interposed between the pump and turbine so that it can alter oil flow returning from the turbine to the pump.
How does an overhead oil tank provide lubrication in a steam turbine?
It provides oil circulation into turbine while Regular oil circulation fails. We can say it as stand by oil tank.
