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采用外部气体对隔离液储罐加压，隔离液压力始终高于密封腔压力，依靠内置泵送环或热虹吸驱动循环，为双端面密封提供清洁的隔离液和连续冷却。

External gas pressurizes the barrier fluid reservoir with pressure always above seal chamber pressure. Circulation is driven by integral pumping ring or thermo-siphon, providing clean barrier fluid and continuous cooling for dual seals.

采用囊式蓄能器加压隔离液，气囊将气体与液体物理隔离，依靠内置泵送环驱动闭式循环，经换热器冷却后返回系统，适用于超过16 bar的高压工况。

Bladder accumulator pressurizes barrier fluid with gas / liquid physical isolation. Closed-loop circulation driven by integral pumping ring, cooled via heat exchanger. Suitable for applications above 16 bar.