Common Problems and Improvement Countermeasures of Air Compressor Lubricating Oil
1. Improper use of lubricating oil
It is manifested that the air compressor will have abnormal noise during the operation, and the operator calls it “gassing” phenomenon. Too dirty lubricant can cause a downtime accident. Check the operation record and find that it has not changed oil for many days. It is recommended to replace the same brand new oil, and then the equipment will return to normal. If the air compressor lubricating oil is too dirty, the lubrication effect is lowered, which will make it unable to effectively exert the cooling effect and cause the lubricating oil itself to overheat. Because its own cooling effect is not guaranteed, it will lead to overheating of the lubricating oil.
2. Reduced compressor oil pressure during operation
This kind of example is very common. A well-operated compressor in a machining factory suddenly has a low oil pressure. Once the fault occurs, the oil pressure will drop lower afterwards. Therefore, it is necessary to carry out maintenance and keep it running. Check the oil pump, normal operation, check the quality of the lubricating oil, check the oil meter, it is normal, check the oil temperature range, all are normal values, so that the fault can occur. The scope is reduced to the lubricated pipeline system. Careful inspection reveals that the connection gasket at the oil pipe is loose. Replace it, tighten the link screw, and try again to resume normal operation.
3, lubricating oil oxidation
During use, the lubricating oil is mixed with air and enters the vortex compression chamber. However, due to the inherent nature of the machine, this is unavoidable. The oxidized lubricating oil is made up of moisture, aged lubricating oil, and worn metal particles and chemically reacts to become viscous. We call it a metal soap. From the analysis of its composition, the oxidation reaction will not occur if there is no water, so the temperature of the lubricating oil rises to no distilled water, even if it is vaporized, it is very important. From the analysis of the rainy summer to the heavy rain, the summer is the most lubricating oil. In the period of easy oxidation, in order to prevent its oxidation, we have carefully analyzed the reasons for the internal temperature increase of the compressor so that the compressor frequently oxidizes. The actual survey results were harvested.
(1) The first case is to check the change state of the compressor temperature in wet weather when the internal temperature rise of the compressor does not reach the condensation temperature. First of all, a large number of instruments are needed to test the internal temperature. Of course, it can be tested by labeling the side of the compressor by recording different operating conditions of the thermometer at different times, and repeatedly measuring the compressor temperature and the operating rate. Collecting a large amount of data to ensure the validity of the data, so as to grasp the increase of the compressor in operation relative to the outside temperature. The measurement results show that the NO2 air compressor is about 4 degrees lower than the NO1 air compressor. It is suspected that this is the reason why the NO2 air compressor lubricant is frequently oxidized during the rainy season. The reason for the difference is the difference in the structure of the air compressor.
(2) Improvement measures
First, the specific problem is specifically analyzed. The internal temperature of the compressor is controlled to generate condensed water, and the internal temperature of the compressor is increased. That is, the operating rate of the compressor is increased. It is necessary to know that, in the case of a certain amount of air, in addition to the external In addition to the exhaust gas, it is difficult to improve the efficiency, and the exhaust gas will also generate noise. Therefore, it is necessary to consider changing the operating range of the compressor. One is to use a continuous operation mode to increase the internal temperature of the compressor and to vaporize the water at one time. One is to cover with a windproof plate to suppress the flow of gas and make the air cooling ineffective.
4. The internal temperature of the compressor suddenly rises during operation.
The reasons for the analysis are as follows: the quality of the lubricating oil is different or mixed with impurities; the water in the cooling water pipe is too much, the exhaust pipe is blocked, and the cooling effect cannot be exerted well; the gap is too small, or the oil particles are added; the compressor cannot be adapted to the lubrication The viscosity of the oil. The corresponding solution is to replace the good quality lubricant, adjust the gap to the specified value, adjust the structure, meet the standard, clean the metal particles, clean the cooler, and increase the water consumption.
5, compressor vortex failure
This situation occurs as a machine, the acid value exceeds the standard, and the lubricating oil deteriorates. The corresponding countermeasures are to avoid the resonance high-speed rotation area during the use of the compressor, replace the new lubricating oil, and adjust and increase the pressure of the lubricating oil. Stabilize compressor unit operation, adjust parameters, meet system requirements, strictly control gap and structure, provide unit operation stability and rationality, install bearings, strictly control circumferential clearance, and improve stability operation.
