What is bearing lift?
Bearing lift pumps provide the necessary high pressure “jacking oil” to lift the turbine generator shafts within the sleeve bearings on horizontal machines and to the lower thrust bearing of a vertical turbine prior to starting the rotation of the hydro turbines.
What is the purpose of jacking oil pump?
The jacking oil pump is used in large turbine systems to prevent metal-to-metal contact in the bearings during turbine start-up. This is accomplished by applying high- pressure oil to the turbine shaft bearings, raising the shaft with the high-pressure oil.
What is main oil pump in turbine?
The main oil pump is the one that delivers all the oil requirements for the turbine- generator at high pressure during normal operation. It is direct-driven from the turbine shaft and may be located at either the turbine or generator end of the shaft. For small units, the main oil pump is generally a gear pump.
What is auxiliary oil pump?
Auxiliary oil pumps are used for lubrication during start-up of the prime-mover bearings and other areas when its speed is not up to the rated value or so.
What is journal in bearing?
Journal or plain bearings consist of a shaft or journal which rotates freely in a supporting metal sleeve or shell. There are no rolling elements in these bearings. Low-speed pins and bushings are a form of journal bearing in which the shaft or shell generally does not make a full rotation.
What type of pump is an oil pump?
Centrifugal pumps are the most common types of pumps used in the oil and gas industry. Centrifugal pumps use centrifugal force through the rotation of the pump impeller to draw fluid into the intake of the pump and force it through the discharge section via centrifugal force.
What is the life of bearing?
Bearing life is essentially the length of time a bearing can be expected to perform as required in predefined operating conditions. It is based primarily on the probable number of rotations a bearing can complete before it starts showing symptoms of fatigue, such as spalling or cracking due to stress.
Why is it called journal bearing?
Journal is related to the word “diurnal” and these words originally referred specifically to the journey or daily movement of the sun… or in other words to the rotation of the Earth. This may be the connection to cyclical rotary motion in particular.
Why do you need a bearing lift pump?
Bearing Lift Bearing lift pumps provide the necessary high pressure “jacking oil” to lift the turbine generator shafts within the sleeve bearings on horizontal machines and to the lower thrust bearing of a vertical turbine prior to starting the rotation of the hydro turbines.
How does a heating oil lift pump work?
A heating oil lift pump is typically used to transfer fuel from a main oil tank to a smaller day tank. We can provide electric fuel transfer pumps and many other components required in power generation systems.
Where is the oil level on a pump bearing?
Attention should be given to oil levels needed and maintained in pump bearing housings. At relatively slow shaft speed/shaft diameter combinations, the oil level is adjusted to reach the center of the balls (or rollers) located at the 6 o’clock position of the bearing.
How much oil does INPRO Ouf oil lifter pump?
These range from 15 litres an hour up to flow rates of 1500 litres an hour depending on your application. Our Inpro OUF oil lifters (Formerly “BM Controls”) are available with ether 3.5 litre or 12 litre reservoirs to. Choose depending on the litres an hour that your oil fuelled appliance needs.