How to identify the authenticity of diesel generator lubricating oil
The lubrication and maintenance of diesel generator sets is a very important process, but a large amount of inferior oil on the market is mixed with too much moisture, which affects the actual use. First, the oil is heated to 110 to 120 degrees Celsius in a test tube. "PI" signifies water in the oil. If there is water in the oil.
The oil is heated to 110 to 120 degrees Celsius by indirect heating. When the bubbles in the oil disappear, cool to normal temperature and remove the water. If we unfortunately complain about buying inferior lubricants, we can use the following method to evaporate water.
If the oil has a mild emulsion, use the following method: emulsify the same brand of oil, participate in 1% to 3% of the weight of phenol as an emulsifier, stop stirring and heat to 50 ° C to 80 ° C, and settle for 4 minutes. Hours or longer, after waiting for the oil and water layer, the downstream water is removed and can be used.
If the emulsified mechanism of thickened oil can be treated by air drying method: In the container of emulsified heavy oil mechanism and a clean serpentine heating tube, heating is stopped by saturated steam through a coil, and the temperature of the oil rises to 110 to 120 degrees Celsius. Clean the air and stop stirring, the water will evaporate. It was not until the essence in the oil disappeared that the recovery returned to a transparent color.
- The diesel engine is working normally, but the generator fails to generate electricity or the voltage is very low. This may be due to the components associated with the generator, such as: the exciter is damaged and the excitation voltage cannot be supplied. The excitation current is taken in. The rotor's dead center residual magnetism is weakened or declining. It will make the generator unable to generate electricity or the transmission voltage is extremely low. The right to respond is usually: use an appropriate DC voltage and directly connect it to the excitation winding according to the polarity. Magnetization. Carefully inspect the exciter and the cyclotron rectifier, find abnormal components or windings, and replace them for restoration. The generator's transmission voltage is unstable, and
- In the power generation industry in China, we have been working hard, pursuing the concept of quality and service, and for the sake of customers, the full power generator chooses China and your generator is a professional housekeeper. At present, the diesel generator set maintenance market refers to damage inspection and routine maintenance. Two aspects: after maintenance refers to the failure of the diesel generator, there are problems with various accessories, such as replacing the generator or
- Before starting, you should check whether the fuel volume of the fuel tank is rich, and there is no oil leakage in each oil pipe and the discussion area; whether the cooling system water is rich, clean and leak-free, and whether the fan belt is tight or not. The internal combustion engine and generator drive part should be connected and trusted The wires of the input line are well-insulated, complete and effective in all aspects. After starting, it should run at low speed for 3 to 5 minutes. After the temperature and oil pressure wheel are normal, the initial work can be done. The generator should be no different in the speed increase. Ring, the slip ring and commutator are well brushed, no jumping and sparking phenomenon. After the operation is stable and the frequency and voltage reach the rated value, power can be supplied to the outside.
- Blue smoke, fire reason: It means that the engine is burning oil. There are three types of reasons: first, the piston ring goes opposite, and the oil comes in the cylinder; the second is the oil level of the oil pan of the atmosphere filter, which leads the ring. The height of the groove; Third, the gap between the duct and the valve stem is too poor. Expulsion idea: adjust the piston ring so that the opening teeth of the ring are staggered 120 degrees or 180 degrees, the opening teeth of the ring should avoid the piston pin hole and the side pressure is poor Adjust the height of the oil level of the oil filter of the atmosphere filter below the height of the annular groove; if the clearance between the duct and the valve stem is too poor, replace the component and reduce the clearance. The normal mutual assistance clearance between the two is 0.0
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