Bushing arrangement for seal cavity protection in rotating...

Details Bushing arrangement for seal cavity protection in rotating... Bushing arrangement for seal cavity protection in rotating...

2006-10-17

2006-10-17

Patel, Vishal (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S411000, C277S412000, C277S430000, C277S585000, C277S512000

Reexamination Certificate

active

07121551

ABSTRACT:
An arrangement (120) of members for a throat bushing for rotary fluid equipment includes a first member (122) that is useful for seal cavities that contain conventional packing, and a second bushing member (132) that will be used in conjunction with the first bushing member if the seal cavity utilize a mechanical seal at the remote end of the cavity. Both bushing members (122, 132) are provided with spiral grooves (140) in a central bore thereof for the removal of contaminants from the seal cavity. The distal end face (124) of the first bushing member is contoured to receive a mating proximal end face (144) of the second bushing member or to also receive the abutting face of a packing ring or a lantern ring. The arrangement of the invention allows an operator to switch between the use of a mechanical seal or conventional packing without having to discard his primary seal cavity protector.

REFERENCES:
patent: 2758857 (1956-08-01), Smith
patent: 4302020 (1981-11-01), Morales
patent: 4305592 (1981-12-01), Peterson
patent: 4572519 (1986-02-01), Cameron et al.
patent: 5167418 (1992-12-01), Dunford
patent: 5553868 (1996-09-01), Dunford
patent: 5921554 (1999-07-01), Derian et al.
patent: 2004/0026876 (2004-02-01), Prinz

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