Abstract:The paper focuses on an operational gas expander being used in a natural gas plant for over 10 years, whose recent realtime monitoring shows that the impeller back-side gap pressure is excessively low. To ensure the safe operation, an insight into the complex internal flow of the expander is demanded. The reverse engineering is firstly conducted to reconstruct the flow passage data from the used impeller and nozzle. The physical model includes the main flow domain components (nozzle ring, impeller, and diffuse… Show more
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