PUMP SYSTEM FOR CONVEYING A FIRST FLUID USING A SECOND FLUID

摘要

The invention relates to a pump system for conveying a first fluid using a second fluid, said system comprising at least a first pump, said first pump comprising at least a first rigid outer casing defining a first interior space, a first flexible tube structure accommodated in the first interior space, wherein the interior of the first flexible tube structure is arranged for receiving one of said first or second fluids, wherein the region of the first interior space surrounding the first flexible tube structure is arranged for receiving said other of said first and second fluids, and wherein the first flexible tube structure is movable between laterally expanded and collapsed conditions for varying the volume of the interior of the first flexible tube structure, thereby imparting sequential discharge and intake strokes on said first fluid.