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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.
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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.
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.
How does viscosity of a fuel oil affect the performance of fuel pump and injector in a diesel engine?
This situation presents an direct relationship between the oil viscosity and the work of the pump. The thicker the oil the more the pump most work to move it.
How does the water pump timing belt and oil pump on a 1990 Honda Accord work together?
The water pump and cam are driven by the same belt. The oil pump has no relation to these.
How does oil work?
Oil is burnt to heat up water. The water then travels in convection currents past a turbine, this causes the turbine to spin. The turbine rotates a coil of wire in a magnetic field. As the coil experiences a change in magnetic field, an AC current is induced. Oil is algy that gets heated under the water at a paticular temperature
What makes an oil pump work on a 99 truck?
If it has a distributor, then that is what drives the oil pump. The camshaft is what makes the distributor turn.If it does not have a distributor then the gear on the oil pump slides over the front of the crankshaft and turns when the crankshaft turns and that is what makes the oil pump work. Early 99 models had a distributor, and the late 99 did not have one.
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 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.
How do you change your oil pump in your 1990 bronco 5.8?
this is not an easy fix basic u have to take the motor half way out by jacking it up with an jack or use an cherry picker.... its gnoe take time have fun
