1 source of emulsified water Lubricating oil forms the main material of emulsification as water. There are two main sources of water in the lubricating oil of 088B06.3: (1) The oil cooler tube leakage or the oil-water isolation gasket is not tightly sealed, causing water to mix into the oil. (2) Condensed water formed by saturated water vapor in the air. By conducting the pressure-maintaining test of the oil-water cooler, it is confirmed that the oil-water cooler has good sealing performance, indicating that the water causing severe emulsification of the lubricating oil is mainly derived from the condensed water formed by saturated water vapor in the air. The temperature drop causes a temperature difference to be a sufficient condition for the compressed air to precipitate condensed water. After measuring with an infrared thermometer, the temperature of the compressed gas mixed with gas and oil at the outlet of 088B06.3, that is, the oil temperature is about 70 on average, the outer surface temperature of the gas oil separator is about 55, and the temperature difference is t= 15. According to the principle of air thermodynamics, The compressed air volume becomes smaller, the temperature rises, and the relative humidity is small, but the relative humidity increases sharply as the temperature decreases. When the relative humidity is not less than 100%, a large amount of supersaturated water vapor in the compressed gas condenses into water droplets. As part of the emulsified particles are brought to the oil separator by the compressed gas stream, since the emulsion at the same temperature has a higher viscosity than the lubricating oil, staying in the oil separator for a long time, the emulsified particles stick to each other, accumulate, and block the gas oil separator. The pore size of the filter, so that the pressure difference of the gas oil separator filter is rising, so the ability of 088B06.3 also decreases with the use. 2 measures In order to eliminate the emulsification of 088B06.3 lubricating oil, the following measures are taken: (1) Insulate the oil separator and the outlet pipe; (2) Gradually increase the oil temperature from 70 to 90; (3) Increase the pressure of 088B06.3 automatic unloading from 0.82MPa to 0.84MPa, and manually control 088B06.3 to start and stop within the pressure of system compressed gas 0.8~0.83 MPa. After the oil separator and the outlet pipe are insulated, the temperature difference between the oil temperature and the gas oil separator is measured when loading 088B06.3; the oil temperature is gradually increased by adjusting the flow rate of the cooling water of the oil cooler. The temperature and moisture content of the separator maintain a low relative humidity, so that a large amount of water is taken away by the compressed gas, eliminating the condition for emulsification of the lubricating oil; manual control 088B06.3 is started and stopped, and the pressure is set to 088B06.3. When maintaining 088B06.3 loading operation, reduce the no-load time and number of 088B06.3 automatic operation, avoid the number of condensed water precipitated due to the cooling air in the oil separator caused by no-load operation, and re-apply 088B06.3 in compressed air The role of energy saving and consumption reduction in the system. By detecting the moisture content of the mobilrarus 425 crude oil is 0.04%, the oil moisture content is not more than 0.1%. Through the above three measures, under the zero input condition, the emulsification of the lubricating oil is effectively eliminated when using 088B06.3 as an air compressor. The use of the oil-gas separator filter can reduce the emulsified lubricating oil to near the performance of the crude oil. For our plant, the 088B06.3 with a power of 55kW is used as a small compressor, and the n-th power of 132 kW is reduced. The start of the piston compressor provides a powerful guarantee for energy saving and consumption reduction. However, 088B06.3 lubricating oil use requirements are not more than 120, from the original 65 to 90 use nearly 50h. When loading 088B06.3, the dynamic characteristics of the measuring device on the screw shell measured by the spectrum vibration meter: average acceleration amplitude 3.2m /s 2 (standard is not more than 10m / s 2), the average displacement amplitude is 0.0026mm (standard is not more than 0.02mm / s), the average vibration intensity amplitude is 0.9 mm / s (standard is not more than 6mm / s), are normal , to prove that the oil temperature is controlled at 90 °, the operation has no effect on the 088B06.3 rotating parts. However, the increase in oil temperature exacerbates the oxidation effect in the use of lubricating oil. The lubricating oil film formed on the surface of the friction parts such as screws and bearings is prone to chemical decomposition, accelerates the corrosion of the surface of the parts, and swells, softens and ages the sealing rubber ring. Pay close attention to and improve.
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