EP3924628C0 - Load-relieving device - Google Patents

Load-relieving device

Info

Publication number
EP3924628C0
EP3924628C0 EP20704818.2A EP20704818A EP3924628C0 EP 3924628 C0 EP3924628 C0 EP 3924628C0 EP 20704818 A EP20704818 A EP 20704818A EP 3924628 C0 EP3924628 C0 EP 3924628C0
Authority
EP
European Patent Office
Prior art keywords
load
relieving device
relieving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20704818.2A
Other languages
German (de)
French (fr)
Other versions
EP3924628B1 (en
EP3924628A1 (en
Inventor
Markus Pittroff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB SE and Co KGaA
Original Assignee
KSB SE and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KSB SE and Co KGaA filed Critical KSB SE and Co KGaA
Publication of EP3924628A1 publication Critical patent/EP3924628A1/en
Application granted granted Critical
Publication of EP3924628B1 publication Critical patent/EP3924628B1/en
Publication of EP3924628C0 publication Critical patent/EP3924628C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0416—Axial thrust balancing balancing pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0465—Ceramic bearing designs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/90—Coating; Surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/22—Non-oxide ceramics
    • F05D2300/224—Carbon, e.g. graphite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/506—Hardness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/611—Coating
EP20704818.2A 2019-02-15 2020-02-07 Load-relieving device Active EP3924628B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019001120.1A DE102019001120A1 (en) 2019-02-15 2019-02-15 Relief device
PCT/EP2020/053150 WO2020165046A1 (en) 2019-02-15 2020-02-07 Load-relieving device

Publications (3)

Publication Number Publication Date
EP3924628A1 EP3924628A1 (en) 2021-12-22
EP3924628B1 EP3924628B1 (en) 2024-01-24
EP3924628C0 true EP3924628C0 (en) 2024-01-24

Family

ID=69570647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20704818.2A Active EP3924628B1 (en) 2019-02-15 2020-02-07 Load-relieving device

Country Status (4)

Country Link
EP (1) EP3924628B1 (en)
CN (1) CN113396287A (en)
DE (1) DE102019001120A1 (en)
WO (1) WO2020165046A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020003140A1 (en) * 2020-05-26 2021-12-02 KSB SE & Co. KGaA Centrifugal pump with at least one hydrodynamic slide bearing arrangement
US11499563B2 (en) * 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
DE102020006364A1 (en) 2020-10-16 2022-04-21 KSB SE & Co. KGaA Centrifugal pump with a pump housing and a pressure cover
WO2023161391A1 (en) * 2022-02-25 2023-08-31 Sulzer Management Ag A multi-stage centrifugal pump comprising an assembly for compensating axial forces

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1745898U (en) 1955-03-28 1957-05-29 Balcke Ag Maschbau AXIAL THRUST LIMITING DEVICE FOR THE PUMP RUNNER OF CENTRIFUGAL MACHINES.
JPS4938641B1 (en) * 1970-08-06 1974-10-19
US6309174B1 (en) * 1997-02-28 2001-10-30 Fluid Equipment Development Company, Llc Thrust bearing for multistage centrifugal pumps
DE19927135A1 (en) 1999-06-15 2000-12-21 Ksb Ag Relief device for multi-stage centrifugal pumps
DE10254041B4 (en) * 2002-11-20 2011-07-07 KSB Aktiengesellschaft, 67227 Method and apparatus for early fault detection in centrifugal pumps
DE102004041235A1 (en) * 2004-08-26 2006-03-02 Ina-Schaeffler Kg Wear resistant coating and method of making same
WO2006093319A1 (en) * 2005-03-02 2006-09-08 Ebara Corporation Diamond-coated bearing or seal structure and fluid machine comprising the same
JP2008081522A (en) * 2006-09-26 2008-04-10 Hitachi Ltd Slide member
DE102008040766A1 (en) * 2008-07-28 2010-02-11 Robert Bosch Gmbh Wear protection layer arrangement and component with wear protection layer arrangement
DE102012219930A1 (en) * 2012-10-31 2014-04-30 Federal-Mogul Burscheid Gmbh Sliding element, in particular piston ring, with a coating
DE102013200846A1 (en) * 2013-01-21 2014-07-24 Federal-Mogul Burscheid Gmbh Sliding element, in particular piston ring, with a coating
DE102013223806A1 (en) * 2013-11-21 2015-05-21 Ksb Aktiengesellschaft relief device
EP3121450B1 (en) * 2015-07-23 2020-09-02 Sulzer Management AG Pump for conveying a fluid with varying viscosity
ITUB20154122A1 (en) * 2015-10-01 2017-04-01 Thermodyn Sas AUXILIARY SYSTEM TO SUPPORT A TREE OF A TURBOMACH AND TURBOMACCHINE EQUIPPED WITH THIS SYSTEM
EP3430270B1 (en) * 2016-03-17 2019-11-13 Sulzer Management AG A centrifugal pump with balancing means and a method of balancing axial forces of the centrifugal pump

Also Published As

Publication number Publication date
CN113396287A (en) 2021-09-14
EP3924628B1 (en) 2024-01-24
WO2020165046A1 (en) 2020-08-20
DE102019001120A1 (en) 2020-08-20
EP3924628A1 (en) 2021-12-22

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