Diesel generator cooling methods are generally divided into three types: air, hydrogen and water. The cooling system of a general synchronous generator is closed and the cooling fluid is recycled.
1) Air Cooling – Air cooling is done by fans. Cold air is blown against the ends of the diesel generator windings, the generator set stator and rotor to dissipate heat. absorbs heat. Then it turns into hot air. After the air between the stator and rotor is fused, it is discharged through the iron core air duct and cooled by the cooler. The cooled air is then sent into the generator by the fan to circulate there to achieve the heat dissipation goal. The machines generally use air cooling for medium and small synchronous generator sets. ,
2) CoolingHydrogen Cooling - Hydrogen cooling uses hydrogen as a cooling medium. The heat dissipation performance of hydrogen is better than that of air. Most large turbine generators use hydrogen cooling.
3) Water cooling - water cooling uses dual internal water cooling of the stator and rotor.
Air cooling: The system is simple and does not require a special hydrogen system and associated sealing oil system, nor a cooling water system for the generator. There is no need to consider the damage caused by water or hydrogen leakage to the generator, but the cooling effect is worse than hydrogen cooling and water cooling.
Hydrogen cooling: the system is complex and requires specialized hydrogen production equipmentand a corresponding sealing oil system. It is sensitive to nearby fire. Although the cooling effect is good, it will gradually be used due to its complexity. system and tedious maintenance.
Water cooling: the effect is good, the system is relatively simple, requires a special cooling water supply system, and is sensitive to generator water leakage and water conductivity. 'cooling water.
Personally speaking: Air cooling system is the simplest, followed by water cooling and finally hydrogen cooling.