US20190063450A1 - Centrifugal pump with balancing device and a method of balancing axial forces of the centrifugal pump - Google Patents
Centrifugal pump with balancing device and a method of balancing axial forces of the centrifugal pump Download PDFInfo
- Publication number
- US20190063450A1 US20190063450A1 US16/081,471 US201716081471A US2019063450A1 US 20190063450 A1 US20190063450 A1 US 20190063450A1 US 201716081471 A US201716081471 A US 201716081471A US 2019063450 A1 US2019063450 A1 US 2019063450A1
- Authority
- US
- United States
- Prior art keywords
- balancing
- disc
- axial
- centrifugal pump
- counter
- 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.)
- Abandoned
Links
Images
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
- F04D29/0413—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
- F04D29/041—Axial thrust balancing
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
- F04D29/0473—Bearings hydrostatic; hydrodynamic for radial 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/29—Three-dimensional machined; miscellaneous
- F05D2250/294—Three-dimensional machined; miscellaneous grooved
Definitions
- FIG. 8 illustrates a detailed axial cross section of the balancing device in accordance with a fourth preferred embodiment of the present invention.
- the disc While the liquid in the gap is evaporated, the disc loses its load carrying capability at least partially at the area of the counter ring 26 as the vapor escapes from the gap 36 ′ very quickly.
- the loss of load carrying capability allows the shaft 18 to move towards the pump inlet, whereby the non-axial counter surfaces 50 and 52 may end up into contact in substantially dry conditions.
- the non-axial counter surfaces contact the power consumption increases rapidly, the friction heats the non-axial counter surfaces, and may at its worst damage the surfaces.
- the resistance to flow between the inner and outer circumference of the counter ring 26 is increased such that the liquid entering the thin gap 36 ′ between the counter ring 26 and the balancing disc 22 sees only the pressure difference between the entrance to the thin gap 36 ′ and the first groove 54 , whereby the velocity of the liquid induced by that particular pressure difference is smaller than in such a case that the total pressure difference would act in the liquid.
- the local pressure in the thin gap 36 ′ is high enough for not allowing the liquid to evaporate.
- the flow velocity of the liquid in each groove is reduced close to nil, as the height or thickness of the flow cross section is suddenly changed from that of the thin gap 36 ′, i.e.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16160876.5 | 2016-03-17 | ||
EP16160876 | 2016-03-17 | ||
PCT/EP2017/055118 WO2017157702A1 (en) | 2016-03-17 | 2017-03-06 | A centrifugal pump with balancing means and a method of balancing axial forces of the centrifugal pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190063450A1 true US20190063450A1 (en) | 2019-02-28 |
Family
ID=55542571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/081,471 Abandoned US20190063450A1 (en) | 2016-03-17 | 2017-03-06 | Centrifugal pump with balancing device and a method of balancing axial forces of the centrifugal pump |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190063450A1 (zh) |
EP (1) | EP3430270B1 (zh) |
CN (1) | CN108779782A (zh) |
BR (1) | BR112018068267A2 (zh) |
RU (1) | RU2018132444A (zh) |
WO (1) | WO2017157702A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116447166A (zh) * | 2023-04-19 | 2023-07-18 | 烟台东德实业有限公司 | 一种空气压缩机叶轮轴向力平衡方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019206580A1 (en) | 2018-04-25 | 2019-10-31 | Sulzer Management Ag | A balance ring, a balancing device, a centrifugal pump and a method of balancing an axial thrust of the centrifugal pump |
CN109058103A (zh) * | 2018-09-25 | 2018-12-21 | 宁波鲍斯能源装备股份有限公司 | 喷水式螺杆压缩机 |
DE102019001120A1 (de) * | 2019-02-15 | 2020-08-20 | KSB SE & Co. KGaA | Entlastungseinrichtung |
CN114508393B (zh) * | 2021-12-27 | 2023-07-18 | 东方电气集团东方汽轮机有限公司 | 甩负荷时轴向推力为零的汽缸、一次及二次再热汽轮机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1499056A (en) * | 1922-07-05 | 1924-06-24 | Hollander Aladar | Centrifugal pump |
DE539225C (de) * | 1931-11-26 | Georg Weyland | Axialschubentlastung mittels stufenfoermiger Entlastungsscheiben | |
DE1082803B (de) * | 1957-04-27 | 1960-06-02 | Rudolf Duemmerling | Entlastungsscheibenpaar fuer mehrstufige Kreiselpumpen |
US6981799B2 (en) * | 2000-11-24 | 2006-01-03 | Ksb Aktiengesellschaft | Slide bearing for a centrifugal pump |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE470581C (de) * | 1924-05-15 | 1929-01-22 | Ernst Holland | Vorrichtung zur Axialdruckentlastung |
DE867933C (de) * | 1941-03-09 | 1953-03-05 | Siemens Ag | Pump-Spaltdichtung |
US6309174B1 (en) * | 1997-02-28 | 2001-10-30 | Fluid Equipment Development Company, Llc | Thrust bearing for multistage centrifugal pumps |
-
2017
- 2017-03-06 RU RU2018132444A patent/RU2018132444A/ru not_active Application Discontinuation
- 2017-03-06 WO PCT/EP2017/055118 patent/WO2017157702A1/en active Application Filing
- 2017-03-06 BR BR112018068267A patent/BR112018068267A2/pt not_active Application Discontinuation
- 2017-03-06 CN CN201780014882.9A patent/CN108779782A/zh active Pending
- 2017-03-06 EP EP17707915.9A patent/EP3430270B1/en active Active
- 2017-03-06 US US16/081,471 patent/US20190063450A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE539225C (de) * | 1931-11-26 | Georg Weyland | Axialschubentlastung mittels stufenfoermiger Entlastungsscheiben | |
US1499056A (en) * | 1922-07-05 | 1924-06-24 | Hollander Aladar | Centrifugal pump |
DE1082803B (de) * | 1957-04-27 | 1960-06-02 | Rudolf Duemmerling | Entlastungsscheibenpaar fuer mehrstufige Kreiselpumpen |
US6981799B2 (en) * | 2000-11-24 | 2006-01-03 | Ksb Aktiengesellschaft | Slide bearing for a centrifugal pump |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116447166A (zh) * | 2023-04-19 | 2023-07-18 | 烟台东德实业有限公司 | 一种空气压缩机叶轮轴向力平衡方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3430270A1 (en) | 2019-01-23 |
RU2018132444A3 (zh) | 2020-05-19 |
CN108779782A (zh) | 2018-11-09 |
RU2018132444A (ru) | 2020-04-17 |
BR112018068267A2 (pt) | 2019-01-15 |
WO2017157702A1 (en) | 2017-09-21 |
EP3430270B1 (en) | 2019-11-13 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: SULZER MANAGEMENT AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOIVIKKO, MATTI;TIITINEN, KALLE;HEISKANEN, HANNU;AND OTHERS;SIGNING DATES FROM 20180809 TO 20180903;REEL/FRAME:046970/0066 |
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STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
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STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
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STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |