What are the main tasks of the oil supply system in a steam turbine?
1 Answers
The main tasks of the oil supply system in a steam turbine are: 1. To supply oil to each bearing of the unit for lubrication and cooling; 2. To provide stable and sufficient pressure oil to the regulation system and protection devices for their normal operation; 3. To supply lubricating oil to various transmission mechanisms. The steam turbine oil supply system mainly consists of a main oil pump, oil injector, emergency oil pump, AC oil pump, DC oil pump, oil cooler, filter, and oil tank. Among these, the main oil pump serves as the power source of the oil system, continuously delivering oil to the lubrication and regulation oil systems during normal operation. The AC oil pump and DC oil pump, also known as auxiliary oil pumps, are used to supply lubricating oil when the main oil pump is not functioning properly during the startup or shutdown of the steam turbine.