1. Diesel generator sets use hard water for a long timeWhen the generator set is used, the water tank generates temperature and a large amount of scale is formed in the tank. water tank and water channels, resulting in poor heat dissipation;
2. There are too many impurities deposited in the water channels of the generator body and cylinder head, which makes the water circulation not smooth and results in poor heat dissipation. The generator set burned oil severely, resulting in excessive carbon deposits and poor heat dissipation;
3. Improper operation and use of the dieselgenerator. When starting the diesel generator, you must first use a small or medium throttle to preheat for a while. Do not suddenly increase the throttle orDo not increase the load suddenly, otherwise the diesel generator will run suddenly and increase the temperature. will increase sharply. Or long-term overload operation of the diesel generator will also cause the temperature of the diesel generator to be too high.
4. Too late fueling time will cause the diesel generator to overheat; . Running it at full load immediately after a repair may cause overheating of moving parts or jamming due to too little mounting clearance. A lack of cooling water causes the diesel generator to overheat.
Why is the generator stator cooling water higher than the temperature of the cold hydrogen? (Power Plant Electrical)
Knowledge of cooling system maintenance
1. Cooling water selection: It is best to use cooling water.e river of low hardness, like well water, which must be boiled and softened. Before use, it is best to use antifreeze.
2. Pay attention to the technical condition of each part: if the radiator leaks, it must be repaired. If the water pump or fan runs or makes abnormal noises, it needs to be repaired. should be repaired in time. If the engine overheats, you must quickly check if there is a lack of water, stop the engine. After cooling, add sufficient cooling water. If the thermostat does not work properly and makes the engine operating temperature too high or too low, it should be repaired or replaced in time.
3. Inspection and adjustment of fan belt tightness: If the fan belt tightness is too weak, it not only affects the cooling air volume and increases the workload of the engine, but also accelerates the wear of the beltdue to sliding. If the belt is too tight, it will accelerate wear on the water pump bearings and generator bearings. Therefore, the tightness of the belt should be checked during use and adjusted if necessary. If it does not comply with regulations, it can be adjusted by changing the position of the generator and the adjustment arm.
4. Clean the scale regularly: After a certain period of engine use, scale will be deposited in the water tank and radiator, which will affect heat dissipation. It must therefore be cleaned regularly. The cleaning method is to add sufficient cleaning fluid to the cooling system. After a while of soaking, start the engine and run it at low to medium speed for a while, then release the cleaning fluid while it is hot. then rinse it with clean water.
This sentence applies to genesrators whose cooling method is water-hydrogen-hydrogen, that is, water passes through the hollow conductor inside the stator winding and the water carries away the heat generated during the generator operation, achieving For cooling, there are ventilation channels inside the stator core and rotor windings, which are cooled by hydrogen.
If the temperature of the internal cooling water of the generator stator winding is higher than the temperature of the hydrogen outside the winding, condensation will form on the outer surface of the stator winding, i.e. the insulating surface of the stator winding will become very wet, causing the insulation of the stator winding to be destroyed, which will cause partial discharge of the stator winding and will render it unusable.