Bushing and lantern ring for rotary fluid pumping equipment

Details Bushing and lantern ring for rotary fluid pumping equipment Bushing and lantern ring for rotary fluid pumping equipment

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/12 (2006.01) F16J 15/18 (2006.01) F16J 15/34 (2006.01)

Patent

CA 2670701

A throat bushing (10, 54) for use in a seal chamber (8) or stuffing box (56) of rotary fluid equipment. The throat bushing defines a first face (13, 60) and a second face (21, 62), an outer surface (11) dimensioned to be received with a tight fit within a throat or bore of the seal chamber (8) or stuffing box (56), and a bore (25) therethrough dimensioned to receive a rotary shaft (3) with clearance to permit free rotation of the rotary shaft (3) therein. The throat bushing comprises at least one tangential channel (22) therethrough leading tangentially from the first face (13, 60) proximal to the outer surface (11), through to the second face (21, 62), proximal to an inner annular surface (12) of the throat bushing bore (25).

La présente invention concerne une bague (10, 54) à collet pour chambre d~étanchéité (8) ou presse-étoupe (56) d~un équipement de pompage rotatif à fluide. La bague à collet ci-décrite définit une première face (13, 60) et une deuxième face (21, 62), une surface externe (11) dimensionnée pour être reçue en ajustement serré dans un collet ou un alésage de la chambre d~étanchéité (8) ou du presse-étoupe (56), et un alésage (25) la traversant dimensionné pour recevoir un arbre rotatif (3) avec un jeu autorisant une rotation libre dudit arbre rotatif (3) à l~intérieur. La bague à collet comprend au moins un circuit tangentiel (22) la traversant, menant tangentiellement de la première face (13, 60) proximale à la surface externe (11) jusqu~à la deuxième face (21, 62) proximale à une surface annulaire interne (12) de l~alésage (25) de la bague à collet.

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