公开(公告)号：US20180017066A1

公开(公告)日：2018-01-18

申请号：US15651907

申请日：2017-07-17

Applicant: Summit ESP, LLC

Inventor： Wesley John Nowitzki ,  Joshua Wayne Webster ,  Randy S. Roberts ,  Joseph Dean Butler ,  John Vanderstaay Kenner ,  Thomas John Gottschalk

IPC: F04D29/04 ,  F04D13/08 ,  F04D29/22 ,  F16C35/02 ,  F04D13/10

Abstract: A bushing anti-rotation system and apparatus. A bushing anti-rotation system includes an impeller and diffuser stage including a rotatable shaft extending longitudinally through the stage, the diffuser having an inner diameter defining a bore, a bearing set including a bushing pressed into the inner diameter, and a rotatable sleeve inward of the bushing, and means for wedging the bushing against the inner diameter of the diffuser, wherein the means for wedging provides a mechanical lock against rotation of the bushing. The means for wedging the bushing against the diffuser includes one of a key wedged between an eccentric cavity in the diffuser and a notch in the bushing, a pin protruding from the diffuser against a flattened portion of the bushing, a square-shaped bushing secured into a square-shaped bore, a bent retaining ring having a bent end that wedges against a diffuser groove wall, or a combination thereof.

公开(公告)号：US20180291917A1

公开(公告)日：2018-10-11

申请号：US15912321

申请日：2018-03-05

Applicant: Summit ESP, LLC

Inventor： Joshua Wayne Webster ,  Wesley John Nowitzki ,  Jason Eugene Hill

IPC: F04D29/047 ,  F04D3/00 ,  F16C35/02 ,  F16C17/26

CPC classification number: F04D29/0476 ,  F04D1/063 ,  F04D3/00 ,  F04D13/08 ,  F04D13/10 ,  F04D29/0413 ,  F04D29/0473 ,  F16C17/02 ,  F16C17/26 ,  F16C33/08 ,  F16C35/02 ,  F16C2226/12 ,  F16C2300/34 ,  F16C2360/44

Abstract: A press-fit thrust bearing system and apparatus. A press-fit thrust bearing for an electric submersible pump includes a protruding band extending around a midsection of a bushing, the protruding band extending inward towards a drive shaft, outward towards a diffuser, or both. When extending outwardly, the band is press-fit into the diffuser to prevent dislodgment of the bushing. A non-rotating guide sleeve extends around the bushing above the protruding band, the guide sleeve interlocking with the protruding band to prevent rotation of the bushing. The guide sleeve includes a projection, the protruding band has a channel and the projection mates with the channel to form the interlock. A pair of flanged, rotatable bearing sleeves extend inwards of the single bushing and are keyed to the drive shaft. The top and bottom faces of the bushing serve as thrust handling surfaces.