1. Correct use of closed cooling system
Most modern diesel engines adopt closed cooling system. The radiator cap is sealed and an expansion tank is added. When the engine is working, the coolant vapor enters the expansion tank and flows back to the radiator after cooling, so as to avoid a large amount of evaporation loss of coolant and increase the boiling point temperature of coolant. The cooling system shall use high-quality coolant with anti-corrosion, anti boiling, anti freezing and waterproof scale, and the sealing must be ensured in use in order to obtain the effect.
2. Keep the outside and inside of the cooling system clean
One of the important conditions for improving heat dissipation efficiency. When the outside of the radiator is stained with soil, oil or the heat sink is deformed due to collision, it will affect the passage of wind, the heat dissipation effect of the radiator becomes worse, resulting in excessive coolant temperature. Therefore, the radiator of the generator set shall be cleaned or repaired in time. In addition, the heat transfer of the coolant will be affected when there is scale, mud, sand or oil in the cooling water tank of the generator set. Adding inferior coolant or water will increase the scale of the cooling system, and the heat transfer capacity of the scale is only one tenth of that of the metal, so the cooling effect becomes worse. Therefore, the cooling system should be filled with high-quality coolant.
3. Keep the amount of coolant sufficient
When the engine is cold, the coolant level should be between the highest and lowest marks of the expansion tank. If the coolant level is lower than the lowest mark of the expansion tank, it should be added in time. The coolant in the expansion tank cannot be filled up, and there should be room for expansion.
4. Keep the tension of fan tape moderate
If the fan tape is too loose, the speed of the water pump will be too low, which will affect the circulation of coolant and accelerate the wear of the tape. However, if the tape is too tight, the water pump bearing will be worn. In addition, the tape shall not be stained with oil. Therefore, the tension of fan tape should be checked and adjusted regularly.
5. Avoid heavy load operation of diesel generator set
If the time is too long and the engine load is too large, the coolant temperature will be too high.
Post time: May-06-2019