Dry gas seal and support system for pipeline compressor serving continuous natural gas compression stations, often located in remote and unmanned areas. Reliability and remote monitoring capability are the most important requirements.
The compressor station usually operates automatically, starting and stopping many times according to transportation needs. Pipeline gas may contain water vapor, heavy hydrocarbons, and dust particles from the pipeline, so the gas quality supplied to the seal needs to be treated carefully.
The support system includes multi-stage filtration, gas heating, nitrogen source for buffer gas and separation gas, and a stable pressure regulator. When the machine stops in a pressure-holding state, the seal chamber still withstands pipeline gas pressure, so static gas leakage needs to be handled.
Pressure, vent flow, and filter differential pressure signals are transmitted to the control system and SCADA. This data helps detect seal degradation early and plan maintenance without the need for on-site personnel.
Many old stations use oil sealing systems. Converting to dry gas seals helps eliminate the oil system, reduce maintenance, and reduce emissions, but requires re-evaluation of installation space, gas source, and control system.
SNS-VN supports consulting on dry gas seals and support systems for pipeline compressor stations. Please contact us for a quote.