Analysis of Insufficient Output Caused by Diesel Generators Oil Leakage

Oil leakage is a common problem in oil-cooled diesel generators. Oil leakage not only consumes large amounts of oil and gas, but is also an important factor that causes the oil pressure to fail to increase and affect the output of diesel generators.

Oil-cooled unit due to pipeline valve leakage, diesel generator shell and end cover welds are not tight, the oil pressure of the sealing tile is too low or the oil supply is interrupted, the stator lead-out bushing or the rotor lead is poorly sealed, and even the stator temperature measuring element leads the mountain line Failure to seal well will cause oil leakage. However, the most common oil leakage occurs at pipeline valves and units with serious leakage. The oil-cooled units of some diesel generator manufacturers are so serious that they make 1-2 oil supplements per shift. It is estimated that the oil leakage site can reach more than ten cubic meters a day and night. Such a large oil consumption is very abnormal.

The fundamental measure to reduce oil leakage is to improve the sealing process and maintenance quality of the oil pipeline and the connecting parts of the diesel generator. Check the points carefully and strengthen the seal. In addition, it is necessary to adjust the oil pressure according to the change of the oil pressure at any time during operation.

Questions about oil and gas leak detection are also an arduous task in current operations. The method of wiping off spots with soap foam is not only troublesome but also insensitive. Although some halogen leak detectors are more sensitive, they are prone to poisoning and should not be used in the field. A gas-sensitive semiconductor detector currently produced can detect flammable gases more sensitively, and it is currently being tested on site.

Oil leakage is also a serious problem in the operation of atmospheric cooling units. Some power plants leak oil as much as several standard barrels a day. Some diesel generator sealing oil is thrown to the stator end wire rod for long-term adhesion, causing the wire squeeze to gain weight and the insulation is dissolved and corroded.

The main reason for the oil leakage of the sealing tile is improper installation and adjustment of the sealing tile. It is also possible that the oil pressure in the diesel generator cannot be maintained at the start and the oil pressure is too high, or the oil pressure is too high when the oil pressure drops at the stop, which causes serious oil leakage. Some factories also believe that the oil leakage is related to the oil temperature. If the oil temperature is high and the viscosity is low, the oil is easily miscible in the oil, resulting in a decrease in oil purity.

In recent years, vicious oil and gas explosion accidents have occurred in many diesel generator manufacturers, causing serious losses. Therefore, we should carefully analyze and take measures to prevent accidents.

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