公开(公告)号：US3722757A

公开(公告)日：1973-03-27

申请号：US3722757D

申请日：1970-08-28

Applicant: STENBERG FLYGT AB

Inventor： DAHLGREN J

IPC: F04D29/60 ,  F16L37/26 ,  B67D5/40

CPC classification number: F04D29/607 ,  F16L37/26

Abstract: A pump unit immersible in the liquid of a well, comprising a liquidtight motor, a pump housing with an outlet connection and guiding means which, on lowering of the pump unit, guide the outlet connection into the vicinity of a fixed coupling unit of the outlet pipe. The pump unit having a seating while the outlet connection has a tapered aperture fitting thereto, so that the connection, after the unit has been essentially lowered, can be brought up against the coupling unit, into sealing engagement with the seating, essentially in the axial direction of the coupling unit. The seating surfaces being spherical to allow for slight misalignment.