Plan 53B - Dual seals, pressurised - Liquid barrier through a heat exchanger & pressurised by a accumulator

Features

Description: Plan 53B, previously termed 53 Modified, uses an accumulator to isolate the pressurizing gas from the barrier fluid. A heat exchanger is included in the circulation loop to cool the barrier fluid. Flow is induced by a pumping ring.

Advantages: Should the loop be contaminated for any reason, the contamination is contained within the closed circuit. The make-up system can supply barrier fluid to multiple dual pressurized sealing systems.

General: The bladder accumulator isolates the pressurizing gas from the barrier fluid to prevent gas entrainment. The heat exchanger can be a water-cooled unit, an air-cooled unit, or utilize finned tubing based upon the system heat load.