摘要 |
THIS INVENTION RELATES TO A PUMP SYSTEM, ESPECIALLY FOR BOOSTING THE FLOW RATE OF A FLUID THROUGH A PIPE (1,2,6), COMPRISING A PUMP POSITIONED IN A PUMP CHAMBER (10) FOR PUMPING AT A CHOSEN RATE, AND A MOTOR DRIVING SAID PUMP, THE MOTOR BEING POSITIONED IN A CHAMBER (9) BEING PROVIDED WITH A PRESSURIZED FLUID, THE PRESSURE OF WHICH BEING HIGHER THAN THE PRESSURE IN THE PUMP CHAMBER, THE MOTOR AND THE PUMP CHAMBERS BEING SEPARATED BY A SEAL (8), THE SEAL ALLOWING A LEAKAGE OF SAID PRESSURIZED FLUID BETWEEN THEM, WHEREIN THE PRESSURIZED FLUID IS ACCEPTABLE TO THE PUMP ENVIRONMENT AND THE SYSTEM COMPRISES A DISCHARGE BRANCH LINE (3) COUPLED TO THE PIPE(6) AND POSITIONED DOWNSTREAM FROM SAID PUMP, THE DISCHARGE BRANCH LINE HAVING AN OUTLET INTO THE ENVIRONMENT. |