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1. (WO2016051327) CHAIN TENSIONING ARRANGEMENT AS WELL AS PUMP STATION

Pub. No.:    WO/2016/051327    International Application No.:    PCT/IB2015/057421
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Tue Sep 29 01:59:59 CEST 2015
IPC: F04D 13/08
F04D 29/60
B63B 21/18
Applicants: XYLEM IP MANAGEMENT S.À R.L.
Inventors: REIMER, Jens
Title: CHAIN TENSIONING ARRANGEMENT AS WELL AS PUMP STATION
Abstract:
The invention relates to a chain tensioning arrangement (2) for a column pipe which is configured to house a submersible pump. The chain tensioning arrangement is characterized in that it comprises a radially extending cross beam (13), a spring arrangement (16) connected to the cross beam (13) and comprising at least one spring member (17), and an arm (18) that is movably connected to the cross beam (13) and that comprises an engagement member (19) configured to optionally engage a chain connected to said 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. The invention also relates to a pump station comprising 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. The pump station is characterized by the inventive chain tensioning arrangement.