What are the common causes of changes in the oil level in the engine’s fuel tank?
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Reasons for the increased oil level in the main engine tank: (1) Excessively high pressure in the pressure equalization tank or excessive steam volume at the end shaft seals. (2) The shaft exhaust pump is malfunctioning, resulting in poor steam discharge from the shaft seal and water entering the oil. (3) The copper tubes of the oil cooler are leaking, and the water pressure is higher than the oil pressure. (4) The oil level gauge gets stuck, resulting in an incorrect oil level reading. (5) During startup, the bearing cooling water of the high-pressure oil pump and the lubricating oil pump leaks into the oil. (6) When the oil temperature at the outlet of the cold oil cooler increases and its viscosity decreases, the oil level will also rise. (7) A low level of seal oil in the tank causes a high level of oil in the main tank. The reasons for the decrease in the oil level in the main engine tank are as follows: (1) Leakage or accidental activation of the tank emergency drain valve and other components of the oil system. (2) If the oil filter pump cannot start automatically to pump oil to the high oil level limit, it will not send oil to the main fuel tank. (3) Leakage in the copper tubes of the oil cooler. (4) The oil temperature at the outlet of the oil cooler is low, and the oil level has also decreased. (5) Oil leakage from the bearing oil seal. (6) The fuel tank has just had water drained from it. (7) The oil level gauge is stuck. (8) An excessively high level of seal oil in the tank causes a low level of oil in the main tank. (9) Oil supply to the generator during shutdown.
1) The pressure in the voltage equalizing tank is too high, or the steam flow at the end shaft seal is excessive. 2) The shaft exhaust pump is malfunctioning, resulting in poor steam discharge from the shaft seal and water entering the oil. 3) The copper tubes of the oil cooler are leaking, and the water pressure is higher than the oil pressure. 4) The oil level gauge gets stuck, resulting in an incorrect oil level reading. 5) During startup, cold water from the shaft coolers of the high-pressure oil pump and the lubricating oil pump leaks into the oil. 6) When the oil temperature at the outlet of the cold oil cooler rises and its viscosity decreases, the oil level will also increase. 7) The oil filter pump cannot stop automatically when the oil level drops to the low limit; it continues to pump oil into the tank. Reasons for the decrease: 1) Emergency fuel discharge valves in the fuel tank and leaks or accidental activation of other components in the fuel system. 2) Oil leakage from the automatic water pump of the oil purifier. 3) The oil purifier cannot start automatically to pump oil from the filter pump to the high oil level limit in order to feed oil into the main oil tank. 4) When the oil pressure is higher than the water pressure, the copper tubes of the cooler leak. 5) The oil temperature at the outlet of the cold oil cooler is low, and the oil level has also decreased. 6) Leakage of bearing oil seal. 7) The fuel tank has just had water drained from it. 8) Oil level gauge stuck