Seal section oil seal for submersible pump assembly

Details Seal section oil seal for submersible pump assembly Seal section oil seal for submersible pump assembly

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 13/10 (2006.01) F04D 29/12 (2006.01)

Patent

CA 2633403

A seal section for location between a submersible rotary pump and motor has a primary mechanical seal and a secondary oil seal at the pump end of the seal section. The mechanical seal has rigid seal faces that slide in engagement with each other. The secondary seal has an inner portion that seals against the shaft of the seal section and an outer portion that seals against the housing. The seal section has a pressure equalizing device for equalizing pressure of motor lubricant with well bore pressure.

La présente invention concerne une section d'étanchéité destinée à être positionnée entre un pompe rotative submersible et un moteur qui possède une garniture mécanique primaire et un joint d'huile secondaire au niveau de l'extrémité de pompe de la section d'étanchéité. La garniture mécanique possède des faces d'étanchéité rigides qui coulissent en contact mutuel. Le joint secondaire comporte une partie intérieure qui réalise une étanchéité contre l'arbre de la section d'étanchéité et une partie extérieure qui réalise une étanchéité contre le logement. La section d'étanchéité comporte un dispositif d'égalisation de pression pour égaliser la pression du lubrifiant de moteur avec la pression de sondage.

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