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How can high-pressure air compressors be able to achieve reliable longevity?

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How can high-pressure air compressors be able to achieve reliable longevity?

Date:2017-06-29 Author:senleijidian Click:

Why the high-pressure air compressor is difficult to achieve the refrigerant compressor so reliable longevity. Because the refrigerant compressor is a closed loop, and the outside world only heat exchange without quality exchange. The high-pressure air compressor is an open cycle, the air constantly to the water and dust into the high-pressure air compressor system.

    The water vapor in the air will condense into liquid water inside the high pressure air compressor under certain conditions. Water can cause metal parts rust, rust the most serious place is the oil tank cans and the cover plate. After a few hours of high-pressure air compressors, the moisture mixed in the lubricating oil will be separated and deposited in the low-lying areas of the machine, such as the bottom of the cylinder, the bearing cavity, the wall of the pipe joints, a few hours to let these surfaces A layer of rust. If you put a few days to the high-pressure air compressor holiday, it is possible to start the first time after the holiday stuck high-pressure air compressor rotor. Experienced users and master long after the first start before the first artificial switch. High-pressure air compressor running oil is often caused by plugging the oil hole, which is also caused by rust. Many of the failures of the intake valve, pressure maintaining valve, solenoid valve, and proportional valve are related to the corrosion products in the pipe and joint.

    Dust pollution of the oil, pollution of the oil core, pollution of the oil filter, but also deposited in the cooler, deposited in the temperature control valve, deposited in the intake valve servo cylinder, deposited in the solenoid valve, are The Causes of Failure of High Pressure Air Compressor.

    The presence of liquid water in the high pressure air compressor system also accelerates the failure of the lubricating oil; the liquid water often forms a water film on the surface of the oil core, which not only reduces the working area of the oil core, but also increases the resistance of the oil core. When the working area of the oil core is reduced, the rate of gas passing through the filter layer is significantly increased. When the flow rate is greater than 0.4 m / s, it will cause long-term jogging oil, and the oil pressure of the high pressure air compressor is increased or the oil content of the compressed air increases. Water film caused by the oil core resistance increases, the machine energy efficiency is reduced, serious will cause the motor thermal protection.

    However, moisture and dust are different, the negative impact of moisture on high-pressure air compressors can be significantly reduced by some measures. Insulation of oil cans is one of the most effective means. When the ambient temperature is 30 degrees Celsius, the head exhaust temperature is 80 degrees Celsius, the oil tank tank wall (note the surface of the tank tank wall) temperature may be below 60 degrees Celsius, for high pressure air compressor of 0.8MPa exhaust pressure, 60 degrees Celsius below In the pressure dew point, moisture will be like winter or indoor glass windows on the dew attached to the surface of the oil tank, the water flowing into the oil, with the oil flow to the various parts of the machine. Insulation of the oil tank is to raise the surface temperature of the inner wall of the oil tank so that it is always less than the dew point temperature in the oil tank, which can greatly improve the negative impact of moisture on the high pressure air compressor. The easiest insulation measures are in the oil tank outside the wall of a layer of thermal pipe insulation paint, 1mm thickness is greater than the wall temperature can be increased about 10 degrees Celsius. )

    High-pressure air compressor oil tank insulation measures to do a good job, less oil in the oil tank, and high-pressure compressor and the nearest isothermal compression in the case of operation, which reduces the high-pressure air compressor failure rate, and empty Press the energy saving to bring a good impact, why not?

    Perhaps, the oil tank can be insulated after the energy-saving effect. The lower the exhaust temperature of the high pressure air compressor, the closer the compression process is isothermal, and the isothermal compression is the most energy efficient compression process. In ensuring that the surface temperature of the inner wall of the oil tank is not lower than the dew point temperature under the oil tank, the lower the air outlet temperature is, the better. The surface temperature of the inner wall of the oil tank is close to the exhaust temperature of the tank, and it is only necessary to ensure that the exhaust temperature of the head is slightly higher than the dew point temperature (for example, 75 degrees Celsius) The inner wall does not hang water.


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