Summary of faults used by generator set manufacturers
With the development of industrialization, generator sets are widely used in industry. More and more companies choose to use generator sets. The market demand is constantly increasing, and the industry's competition is fierce. Many users who purchase generator sets are mostly industrial Manufacturers, for relatively high power demand, long-term use of the generator set, a little carelessness will cause a failure, under what circumstances will the failure occur? How to avoid it? The following is a brief introduction by WACKER Power.
Generator usage failure summary
The quality of the fuel and lubricating oil should be adapted to the structure of the diesel generator. If diesel contains sulfur or other impurities, acids and other corrosive substances will be generated during the combustion process, which will accelerate the wear of the cylinder. Too much heavy fraction in diesel will easily form carbon deposits after combustion, so that piston rings and Abrasive wear occurs in the cylinder; the viscosity of the diesel has an impact on the formation of the mixture and the reliability of the oil supply equipment. For lubricating oil, the viscosity and oxidation resistance are affected. It should be selected and used reasonably according to the operating conditions of the diesel engine.
Tests have shown that the friction of diesel generators increases with speed and load. When the load increases, the unit pressure on the friction surface increases, resulting in poor thermal conditions. When the speed is increased, the number of frictions per unit time is increased by half, and at the same power, the increase in speed is greater than the wear when the load is increased. However, too low speed can not guarantee good liquid lubrication conditions, but also increase wear, so for a certain diesel generator, there is a suitable working speed range.
In addition, when diesel generators are often subjected to unstable work such as acceleration, deceleration, parking, and starting, due to frequent changes in speed and load, diesel generators have poor lubrication conditions, unstable thermal conditions, and increased wear. Especially at the time of starting, the crankshaft rotates at a low speed, the oil pump is not supplied in time, and the refueling temperature is low, the oil viscosity is high, it is difficult to establish liquid lubrication on the friction surface, and the wear is very serious.
The temperature of the operating environment also has an influence on the wear of diesel generators. When the temperature is high, the engine is liable to overheat, the viscosity of the lubricant is low, and the wear of the parts increases. When the temperature is low, the viscosity of the lubricating oil becomes larger, and it is difficult to start the diesel engine. The cooling water cannot maintain the normal temperature during work, which increases the wear and corrosion of the parts. When the diesel engine starts at low temperature, the wear is more serious.
In addition, the operating temperature of diesel generators is one of the important factors affecting wear. During use, due to the limitations of the cooling system structure, changes in working load and speed, changes in ambient temperature, and other factors, the range of changes in the operating temperature of diesel generators is wide. Practice has shown that it is advantageous to control the temperature of the cooling water at 75-85 ° C and the temperature of the lubricating oil at 75-95 ° C.
Therefore, diesel generator manufacturers tell everyone that if we want to use diesel engines reasonably, avoid failures, and reduce the wear of parts, we must do it. We must choose the operating conditions of diesel engines to improve the running-in quality of diesel generators. , And then remember to choose the fuel and lubricating oil that are suitable for the needs of the engine. The more important point is to master the operation method, improve the operation level, and timely maintenance.
The above is a brief introduction about the fault summary of generator set manufacturers. I hope this knowledge will be helpful to you!
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