Regarding the dry gas seal vent volume of centrifugal compressors
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I’m seeking advice from experts: Our facility uses GE New Bilo BCL355/A compressors. One of these compressors has issues with the amount of gas that is released from its dry gas seal during operation. On normal, sunny days, the amount of gas released from both the drive side and the non-drive side is around 20%, but it rises significantly on cloudy or rainy days, or at night, reaching over 90% in some cases. We think this might be related to temperature and humidity, but there are no problems with the heating element used for the dry gas seal, and the water dew point of the air supplied to the compressor is also not high. The pressure at which gas is released from the dry gas seal remains stable, with no abnormalities
Is it related to the pressure in the backline piping? When the temperature is high on sunny days, there is some difficulty in releasing the pressure inside the pipelines in the rear section; when the temperature is low, the pressure in that section is low, and as a result the backpressure is low, allowing more fluid to flow
There are issues with air pressure or back pressure; the back pressure changes, and the amount of venting varies significantly
The primary vent lines for dry gas should all be the same, but among our 4 compressors, only this one experiences fluctuations due to weather conditions
The primary vent lines for dry gas should all be the same, but among our 4 compressors, only this one experiences fluctuations due to weather conditions
We have a fan that also experiences some vibration fluctuations on rainy days; it operates normally under normal conditions. It’s getting stuck and not functioning properly
Flow rate = flow velocity * pipe diameter; when the pipe diameter remains constant, does the flow velocity of the leaking gas change? Specifically, it is necessary to analyze relevant data such as the density of the medium in the process system.