Above the motor bellows expansion member for a submersible pump

Details Above the motor bellows expansion member for a submersible pump Above the motor bellows expansion member for a submersible pump

2005-02-08

2005-02-08

Freay, Charles G. (Department: 3746)

Pumps

Processes

C417S423300, C417S423110, C277S336000

Reexamination Certificate

active

06851935

ABSTRACT:
A multi-diameter bellows is provided in a seal section of a submersible pump to assist in allowing expansion of dielectric oil within the submersible pump, to equalize the casing annulus pressure with the internal dielectric motor fluid and to isolate the well fluid from the clean dielectric motor fluid. A shaft communicates the motor with the pump and runs through a bellows located in a bellows chamber in the seal section. The bellows is made of a first collapsible section and a second collapsible section. The first collapsible section has a fixed end at a first end of the bellows and has a first cross-sectional area. The second collapsible section has a fixed end at a second end of the bellows and has a second cross-sectional area. A first coupling member is provided between the first collapsible section and the second collapsible section. A volume within the bellows is varied by movement of the first coupling member towards either of the first end and the second end. An additional embodiment has greater than two collapsible sections, wherein each section is separated by a coupling member. In both embodiments, the ends of the bellows are fixed and the volume within the bellows is varied by movement of the coupling member or coupling members, to compress or expand larger or smaller diameter sections to increase or decrease the volume of the bellows as required.

REFERENCES:
patent: 2423436 (1947-07-01), Blom
patent: 3947709 (1976-03-01), Waltman
patent: 4406462 (1983-09-01), Witten
patent: 4421999 (1983-12-01), Beavers et al.
patent: 4436488 (1984-03-01), Witten
patent: 4992689 (1991-02-01), Bookout
patent: 5622222 (1997-04-01), Wilson et al.
patent: 6059539 (2000-05-01), Nyilas et al.
patent: 6242829 (2001-06-01), Scarsdale
patent: 6307290 (2001-10-01), Scarsdale
patent: 6688860 (2004-02-01), Du et al.
patent: 20020192090 (2002-12-01), Du et al.
patent: 1080366 (1994-01-01), None
patent: 2336474 (1999-10-01), None
Search Report dated Dec. 20, 2002 from UK Patent Office; Prepared in connection with corresponding GB 0213302.3.

Affiliated with

Also associated with

Rating

Above the motor bellows expansion member for a submersible pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Above the motor bellows expansion member for a submersible pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Above the motor bellows expansion member for a submersible pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3482633