Title (en)

PUMPING ARRANGEMENT

Title (de)

PUMPENANORDNUNG

Title (fr)

DISPOSITIF DE POMPAGE

Publication

EP 4006347 A1 20220601 (EN)

Application

EP 22167424 A 20220408

Priority

EP 22167424 A 20220408

Abstract (en)

A pumping arrangement is proposed, comprising a first multistage pump (10a) and a second multistage pump (10b), wherein each multistage pump (10a, 10b) comprises:a housing (2) with a pump unit (3) arranged in the housing (2), wherein the housing (2) comprises a pump inlet (21) for receiving a fluid with a suction pressure, and a pump outlet (22) for discharging the fluid with a discharge pressure, and wherein the pump unit (3) comprises a plurality of impellers (31, 32, 33) for conveying a fluid from the pump inlet (21) to the pump outlet (22), anda pump shaft (5) for rotating about an axial direction (A), with the pump shaft (5) extending from a drive end (51) to a non-drive end (52), wherein each impeller (31, 32, 33) is mounted to the pump shaft (5) in a torque proof manner.The second multistage pump (10b) comprises at least a first mechanical seal (50) for sealing the pump unit (3) at the pump shaft (5), with the first mechanical seal (50) having a process side (59) facing the pump unit (3). The pump outlet (22) of the first multistage pump (10a) is connected to the pump inlet (21) of the second multistage pump (10b), so that the first multistage pump (10a) and the second multistage pump (10b) are arranged in series. The process side (59) of the first mechanical seal of the second multiphase pump (10b) is in fluid communication with the pump inlet (21) of the first multistage pump (10a).

IPC 8 full level

F04D 13/14 (2006.01); F04D 1/06 (2006.01); F04D 13/08 (2006.01); F04D 29/041 (2006.01); F04D 29/12 (2006.01); F04D 31/00 (2006.01)

CPC (source: EP US)

F04D 1/06 (2013.01 - US); F04D 13/06 (2013.01 - US); F04D 13/14 (2013.01 - US); F04D 17/122 (2013.01 - EP); F04D 25/0686 (2013.01 - EP); F04D 25/16 (2013.01 - EP); F04D 29/043 (2013.01 - US); F04D 29/0516 (2013.01 - EP); F04D 29/124 (2013.01 - EP)

Citation (applicant)

• EP 3771828 A1 20210203 - SULZER MANAGEMENT AG [CH]
• EP 3808984 A1 20210421 - SULZER MANAGEMENT AG [CH]
• WO 2017137080 A1 20170817 - FMC SEPARATION SYSTEMS BV [NL]
• WO 2014060048 A1 20140424 - FMC SEPARATION SYSTEMS BV [NL]
• WO 02056999 A1 20020725 - STATOIL ASA [NO], et al

Citation (search report)

• [XDI] EP 3771828 A1 20210203 - SULZER MANAGEMENT AG [CH]
• [AD] EP 3808984 A1 20210421 - SULZER MANAGEMENT AG [CH]
• [A] EP 3739215 A1 20201118 - SULZER MANAGEMENT AG [CH]
• [A] US 2011280706 A1 20111117 - MEUTER PAUL [CH], et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 4006347 A1 20220601; EP 4257826 A1 20231011; US 2023323885 A1 20231012

DOCDB simple family (application)

EP 22167424 A 20220408; EP 23165190 A 20230329; US 202318126300 A 20230324