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1. WO2022161905 - A MULTISTAGE CENTRIFUGAL PUMP FOR PUMPING FLUID, AN IMPELLER / SHAFT ASSEMBLY AND A METHOD FOR ASSEMBLING AN IMPELLER / SHAFT ASSEMBLY

Publication Number WO/2022/161905
Publication Date 04.08.2022
International Application No. PCT/EP2022/051463
International Filing Date 24.01.2022
Chapter 2 Demand Filed 25.11.2022
IPC
F04D 29/62 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
60Mounting; Assembling; Disassembling
62of radial or helico-centrifugal pumps
F04D 1/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
1Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
06Multi-stage pumps
F04D 29/20 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
18Rotors
20Mounting rotors on shafts
CPC
F04D 1/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
1Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
06Multi-stage pumps
F04D 29/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
18Rotors
20Mounting rotors on shafts
F04D 29/628
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
60Mounting; Assembling; Disassembling
62of radial or helico-centrifugal pumps
628especially adapted for liquid pumps
F05D 2250/294
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2250Geometry
20Three-dimensional
29machined; miscellaneous
294grooved
F05D 2260/36
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2260Function
30Retaining components in desired mutual position
36by a form fit connection, e.g. by interlocking
F05D 2300/5021
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2300Materials; Properties thereof
50Intrinsic material properties or characteristics
502Thermal properties
5021Expansivity
Applicants
  • SULZER MANAGEMENT AG [CH]/[CH]
Inventors
  • VARTIAINEN, Jouni
Agents
  • ERIK BRÜCK
  • DR. MANFRED IRSCH
  • DR. ROLAND ALTHAUS
  • DR. STEFAN KLUTHE
Priority Data
21154000.028.01.2021EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A MULTISTAGE CENTRIFUGAL PUMP FOR PUMPING FLUID, AN IMPELLER / SHAFT ASSEMBLY AND A METHOD FOR ASSEMBLING AN IMPELLER / SHAFT ASSEMBLY
(FR) POMPE CENTRIFUGE À ÉTAGES MULTIPLES POUR POMPER UN FLUIDE, ENSEMBLE ROUE/ARBRE ET PROCÉDÉ D'ASSEMBLAGE D'UN ENSEMBLE ROUE/ARBRE
Abstract
(EN) Invention relates to a multistage centrifugal pump (10) for pumping fluid, the pump (10) comprising: - a pump housing (11) having a fluid inlet (12) and a fluid outlet (13) and a flow channel (110) between the inlet (12) and the outlet (13) in the housing, the pump housing (11) is comprising a number of pumping stages, - a shaft (14) mounted by bearings (15) for rotation about its center axis (A-A), - a number of impellers (18), comprising a hub (181) having an axial opening (180) configured to be fitted on the shaft (14), - when in use, power is transmitted though the rotating shaft 14 to the impellers (18), causing torque, radial forces and axial forces, - over the length of the shaft (14) where the impellers (18) are configured to be assembled, the shaft (14) has a diameter that is smaller than the inner diameter of the hub (181) and an adaptor ring (16) is arranged into the axial opening (180) of the hub (181) to transmit the radial forces between the impeller (18) and the shaft (14). The invention relates also to a corresponding impeller shaft assembly and a method for manufacturing such.
(FR) L'invention concerne une pompe centrifuge à étages multiples (10) pour pomper un fluide, la pompe (10) comprenant : - un corps de pompe (11) ayant une entrée de fluide (12) et une sortie de fluide (13) et un canal d'écoulement (110) entre l'entrée (12) et la sortie (13) dans le corps, le corps de pompe (11) comprenant un certain nombre d'étages de pompage, - un arbre (14) monté par des paliers (15) pour pouvoir tourner autour de son axe central (A-A), - un certain nombre de roues (18), comprenant un moyeu (181) présentant une ouverture axiale (180) conçu pour être monté sur l'arbre (14), - lors de l'utilisation, de l'énergie est transmise par l'intermédiaire de l'arbre rotatif (14) aux roues (18), générant un couple, des forces radiales et des forces axiales, - sur la longueur de l'arbre (14) où les roues (18) sont conçues pour être assemblées, l'arbre (14) a un diamètre inférieur au diamètre interne du moyeu (181) et une bague d'adaptation (16) est disposée dans l'ouverture axiale (180) du moyeu (181) pour transmettre les forces radiales entre la roue (18) et l'arbre (14). L'invention concerne également un ensemble arbre de roue correspondant et son procédé de fabrication.
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