The water filling and pressure maintaining system mainly included: pressure pump and its control device, blockage end at the spiral case inlet, sealing ring on the stay ring of turbine, etc.

蜗壳内充水保压系统，主要包括加压水泵及其控制装置、蜗壳进口闷头、座环密封环等组成。

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The inventive system can reduce gas pressure wave motion for maintaining stabilization of the pipeline gas pressure.

本发明的系统可减少气体压力的波动，用于维持管道气体压力的稳定。

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A novel AC variable frequency converting control system with multiple functions is introduced. The system is suitable for maintaining constant oil pressure in main line of oil pipelines.

阐述了一种新型多功能交流变频调速控制系统，用于保持油田输油管主干线油压恒定。

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