Lubricating oil leakage issue in the screw compressor of the gas holder
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The screw compressor 711 used in the gas holder is in normal operation; however, the amount of lubricating oil in the tank decreases significantly every day. It is necessary to add lubricating oil on a daily basis to keep the compressor running. The compressor is equipped with a dry gas seal, the temperature of the lubricating oil is 60 degrees, the pressure of the lubricating oil is 4 kilograms, while the pressure of the dry gas seal is less than 2 kilograms. What could be the reason for this decrease in the amount of lubricating oil? I asked for advice!
A gas tank screw compressor refers to either an oil-injected screw compressor or a oil-free screw compressor. If there is hydraulic pressure, fuel injection must have occurred; therefore, analysis was carried out based on fuel injection. 1. Sealing leaks can generally be observed. 2. The separator is contaminated with oil; check whether the exhaust gas also contains oil, and replace the filter element. 3. The oil return pipe is blocked, which prevents the separated oil from being carried away; as a result, it is expelled along with the exhaust gas
Choosing a screw compressor produced by this factory is a tragedy
I’m using it too. 1. General seal leakage can be observed. 2. The separator is contaminated with oil; check whether the exhaust gas also contains oil, and replace the filter element. 3. The oil return pipe is blocked, which prevents the separated oil from being carried away; as a result, it is expelled along with the exhaust gas
The previous comment was a mistake. I am also using a 711 screw air receiver compressor. Some time ago, there was a situation where lubricant was consumed at a rate of one fill per month. After performing a pressure test on the outside of the mechanical seal with around 5 kilograms of pressure, it was determined that the internal mechanical seal was unable to retain pressure; this indicated a leakage in the mechanical seal. After replacing the seal, the problem was resolved, and lubricant consumption became minimal. It is recommended to conduct a comprehensive inspection by checking several aspects, including the dry gas seal, whether there are leaks during pressure testing of the cooling chamber, and the effectiveness of the oil separator in separating oil
It’s possible that the lubricant has seeped into the seal. Check the oil collector. Also, check the oil composition in the exhaust to see if there is lubricating oil present.