What are the reasons for bearing oil loss in a steam turbine?
Thread Content
The reasons for bearing oil loss in a turbine include: (1) misoperation during the oil system switch-over while the turbine is in operation. (2) If the main oil pump loses pressure and the lubricating oil pump does not start operating, this will result in a loss of oil supply; it can also cause a loss of oil supply at the moment just before the lubricating oil pump starts operating. (3) If a large amount of air remains in the oil system and is not removed in time, it can cause an immediate loss of oil supply to the bearing shells, leading to their damage. Failing to remove air in advance as required when switching between the oil filter and the oil cooler can allow a large amount of air to enter the oil supply pipeline, resulting in an immediate loss of oil supply to the bearing shells. (4) The lubricating oil pump does not supply oil during startup and shutdown. (5) The oil level in the main fuel tank is too low, air enters the filler, causing the main fuel pump to lose fuel supply. (6) Loss of oil supply to the bearing shells occurs when the DC oil pump cannot be activated in a timely manner due to a disruption in plant power supply. (7) The fuel supply pipeline broke, resulting in a large amount of oil leakage and a disruption in fuel supply. (8) Residual fibers and other debris in the oil system during installation or maintenance can cause blockages in the oil inlet. (9) The bearing shells shift during operation; for example, if the bearing shells rotate, it can cause the oil inlet to become blocked.
(1) An error occurred during the oil system switchover while the turbine was in operation. (2) If the main oil pump loses pressure and the lubricating oil pump does not start operating, this will result in a loss of oil supply; it can also cause a loss of oil supply at the moment just before the lubricating oil pump starts operating. (3) If a large amount of air remains in the oil system and is not removed in time, it can cause an immediate loss of oil supply to the bearing shells, leading to their damage. Failing to remove air in advance as required when switching between the oil filter and the oil cooler can allow a large amount of air to enter the oil supply pipeline, resulting in an immediate loss of oil supply to the bearing shells. (4) The lubricating oil pump does not supply oil during startup and shutdown. (5) The oil level in the main fuel tank is too low, air enters the filler, causing the main fuel pump to lose fuel supply. (6) Loss of oil supply to the bearing shells occurs when the DC oil pump cannot be activated in a timely manner due to a disruption in plant power supply. (7) The fuel supply pipeline broke, resulting in a large amount of oil leakage and a disruption in fuel supply. (8) Residual fibers and other debris in the oil system during installation or maintenance can cause blockages in the oil inlet. (9) The bearing shells shift during operation; for example, if the bearing shells rotate, it can cause the oil inlet to become blocked
1. During the operation of the turbine, an error occurred while switching the oil system; 2. After the unit reached its operating speed, the high-pressure oil pump was stopped without proper monitoring of the oil pressure; 3. The lubrication oil pump malfunctioned during startup or shutdown; 4. Oil leakage in the system led to a significant drop in oil pressure; 5. The oil level was too low, causing the main oil pump to run out of oil; 6. During installation or maintenance, debris such as cotton fibers remained in the oil system, resulting in blockages in the oil supply system; 7. The bearing shells shifted during operation, leading to blockages in the oil inlet holes; 8. A large amount of air remained in the oil system and was not removed in time, causing the bearing shells to suddenly run out of oil