公开(公告)号：US20180229984A1

公开(公告)日：2018-08-16

申请号：US15516242

申请日：2015-09-28

Applicant: XYLEM IP MANAGEMENT S.À R.L.

Inventor： Jens REIMER

IPC: B66D5/16 ,  F04D13/08 ,  F04D29/60

CPC classification number: B66D5/16 ,  B66D1/36 ,  B66D2700/02 ,  B66D2700/03 ,  F04C13/008 ,  F04D13/086 ,  F04D29/607 ,  F04D29/648

Abstract: A chain tensioning arrangement for a column pipe which is configured to house a submersible pump. The chain tensioning arrangement includes a radially extending cross beam, a spring arrangement connected to the cross beam, at least one spring member, and an arm that is movably connected to the cross beam. The arm includes an engagement member configured to optionally engage a chain connected to the pump. The arm is displaceable in the axial direction between a lower position and an upper position. The spring member is arranged to displace the arm in the direction from the lower position towards the upper position. Also described is a pump station including a column pipe, a submersible pump arranged in the column pipe and an axially extending chain connected to the pump and configured to move the pump in the column pipe.