Protection system for subsea seawater injection pumps

Details Protection system for subsea seawater injection pumps Protection system for subsea seawater injection pumps

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 13/08 (2006.01) F04D 29/10 (2006.01)

Patent

CA 2702382

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.

Cette invention porte sur un système de pompe, destiné en particulier à amplifier le débit d'un fluide à travers un tuyau (1, 2, 6), comprenant une pompe placée dans une chambre de pompe (10) pour pomper à un débit choisi, et un moteur entraînant ladite pompe, le moteur étant placé dans une chambre (9) qui comporte un fluide sous pression dont la pression est supérieure à la pression dans la chambre de pompe, les chambres de moteur et de pompe étant séparées par un joint d'étanchéité (8), le joint d'étanchéité permettant une fuite dudit fluide sous pression entre elles, le fluide sous pression étant acceptable pour l'environnement de la pompe et le système comprenant une ligne de dérivation de décharge (3) couplée au tuyau (6) et placée en aval de ladite pompe, la ligne de dérivation de décharge ayant une sortie dans l'environnement.

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