During the operation of the high-pressure air compressor, the air outlet pipe is provided with a check valve, and the high-temperature and high-pressure humid air is discharged through the air compressor exhaust valve. After passing through the post-stage cooler, certain oil and water components are still entrained. The second and third stage intercoolers and the final stage coolers of air compressors are equipped with air-water separators, which are used to separate the moisture generated during the compression process. The actual operation results are not very satisfactory. Because the air compressor has a long standby time, the moisture generated by the exhaust gas accumulates around the pipeline and the check valve, causing the moisture to flow back to the inside of the chassis. The water content of the lubricant gradually increases, eventually causing the oil level of the high-pressure air compressor to alarm and shut down. . When the outlet pipe of the air compressor was removed during shutdown, it was found that there was a large amount of milky liquid flowing out of the pipe, which indicated that the air content of the exhaust of the air compressor was seriously exceeded.
According to the requirements of the operation of the air compressor, the air compressor should have a minimum running time to prevent the formation of condensate. Condensation water can cause rust on cylinder valves, frame components, etc. Accumulation of condensate in the crankcase can cause erroneous readings of the oil level. Water and oil cannot be mixed, and their co-presence causes rapid oil deterioration. The minimum run time is generally not less than 10 minutes and should be sufficient to allow the air compressor to heat up to vaporize the condensed moisture. At present, the operating time of the air compressor is 7 minutes, which obviously cannot meet the requirements.
High-pressure air compressor inlet treatment method
(1) For the problem of oil inflow in air compressors, technicians should replace the sealed piping check valves and install a water separator with high water removal efficiency after the air compressor outlet pipe. ?Using precision filter filter, high temperature compressed air from the inlet into the water separator, after cyclone separation, inertial collision separation and fine fiber filtration, the compressed air in the water and oil directly intercepted through the sewage outlet, in addition to water After the compressed air is discharged through the outlet, to meet the needs of high-pressure gas.
(2) An automatic drain solenoid valve is provided at the drain outlet at the bottom of the oil-water separator. The automatic blowdown interval is set to 2 minutes, and the blowdown time is set to 5 seconds. Without affecting the normal operation of the air compressor, by increasing the time of the pollutant discharge of the separator, the operating time of the air compressor can be effectively extended to meet the minimum operating time requirement of the air compressor. After trial operation, the air compressor stopped from the automatic start to the pressure of 4.15~4.40 MPa, and the running time was over 11 min.
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