Problems in the operation of diesel generator sets
Today, these oil generators are widely used and have become mainstream functional equipment. Some oil generators can be started quickly to meet the AC power required by the load. Therefore, the generator set plays a role in maintaining the normal operation of the power system. critical use.
This paper focuses on the analysis and discussion of several problems of diesel generator sets in super high-rise buildings:
1: The diesel engine runs when the oil is insufficient
At this time, insufficient oil supply will cause insufficient oil supply to the surfaces of each friction pair, resulting in abnormal wear or burns.
Two: stop immediately with load or immediately after unloading the load
After the diesel generator is turned off, the water circulation of the cooling system stops, the heat dissipation capacity drops sharply, and the heated parts lose cooling. It is easy to cause the cylinder head, cylinder liner, cylinder block and other parts to overheat, resulting in cracks, or cause the piston to be stuck in the cylinder liner due to excessive expansion.
Three: After a cold start, it can run with load without preheating.
When some oil generators are cold started, the dry oil has high viscosity, poor fluidity, and insufficient oil supply from the oil pump. The friction surface of the machine is poorly lubricated due to lack of oil, resulting in rapid wear and tear, and even failures such as cylinder pulling and burning
Four: After the cold start of the diesel engine, the throttle burst
If you slam on the accelerator, the diesel generator’s revs will rise sharply, which will cause some of the friction surfaces on the machine to wear badly from dry friction.
Five: run when the cooling water is insufficient or the cooling water or oil temperature is too high
Insufficient cooling water for some oil generator sets will reduce their cooling effect. Some oil engines will overheat due to ineffective cooling. Excessive cooling water and oil temperatures can also cause some oily engines to overheat.