EP3947976A1 - Wärmesperre - Google Patents
WärmesperreInfo
- Publication number
- EP3947976A1 EP3947976A1 EP20712218.5A EP20712218A EP3947976A1 EP 3947976 A1 EP3947976 A1 EP 3947976A1 EP 20712218 A EP20712218 A EP 20712218A EP 3947976 A1 EP3947976 A1 EP 3947976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier element
- pump arrangement
- heat
- arrangement according
- barrier device
- 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.)
- Granted
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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
- F04D13/026—Details of the 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
Definitions
- the invention relates to a pump arrangement, in particular a magnetic coupling pump arrangement, with an interior space formed by a housing arrangement, a containment can which hermetically seals a chamber enclosed by it from the interior space formed by the housing arrangement, an impeller shaft that can be rotated about an axis of rotation, and one at one end of the impeller shaft arranged impeller, an inner rotor arranged at the other end of the impeller shaft, a drive device, a drive shaft that can be rotated by the drive device about the axis of rotation and an outer rotor arranged on the drive shaft and interacting with the inner rotor, the outer rotor having a first carrier element and a having connected to the first carrier element second carrier element.
- Explosion-proof block motors in particular standard motors in flange design, only allow a certain amount of heat to be introduced into the motor at the interfaces, in particular flange and shaft, in such a way that the maximum permissible temperatures of the motor are not exceeded.
- the outer rotor runs in the coolant, which results in considerable friction losses which significantly reduce the efficiency of the pump.
- the object of the invention is to provide a pump arrangement in which the heat flow into the drive shaft mounted in a bearing carrier and thus into the inner rings of the roller bearing is minimized.
- the object of the invention is achieved in that the first carrier element has a thermal barrier device.
- the thermal barrier device reduces the heat input from the containment shell into the drive shaft of the outer rotor and into the bearings with which the drive shaft is supported in the bearing bracket.
- the first carrier element comprises an annular disk with a hub for fastening to the drive shaft, a collar extending axially in the direction of the containment shell being provided on the annular disk.
- thermo barrier device is arranged inside the collar.
- the collar and the arrangement of the thermal barrier device within the collar allow optimal placement of the thermal barrier device.
- the thermal barrier device comprises a thermal insulating element and a thermal reflecting element.
- the heat input into the first carrier element and the drive shaft can thus be efficiently reduced.
- the heat insulating element is designed essentially as a circular cylindrical body.
- the heat reflection element is designed essentially as a plate in the form of a circular disk. Due to the circular configuration, the outer jacket surfaces of the heat insulating element and the heat reflection element can rest against the inner jacket surface of the collar and reduce the heat input into the first carrier element and the drive shaft.
- the heat insulating element expediently rests against the annular disk of the carrier element and the heat reflection element rests against the heat insulating element and is arranged between the chip pot and the heat insulating element. In this way, the heat radiation emanating from the containment shell can be reflected back and the heat flow into the drive shaft can be greatly reduced.
- a screw-like fastening means is provided for secure fastening of the thermal barrier device to the first carrier element.
- a threaded bolt-like fastening means is provided for fastening the thermal barrier device to the first carrier element.
- a rivet-like fastening means is provided for fastening the thermal barrier device to the first carrier element.
- the inner lateral surface of the collar has a radially circumferential groove into which a locking ring is inserted.
- the locking ring prevents axial movement of the thermal barrier.
- FIG. 1 shows the longitudinal section through a magnetic coupling pump arrangement with an outer rotor having a heat barrier device and the FIG. 2 shows the outer rotor shown in FIG. 1 in an enlarged view and FIG
- FIG. 1 shows a pump arrangement 1 in the form of a magnetic coupling pump arrangement.
- the pump arrangement 1 has a multi-part housing arrangement 2 with a hydraulic housing 3 designed as a spiral housing, a housing cover 4, a bearing support lantern 5, a bearing support 6 and a bearing cover 7.
- the hydraulic housing 3 has an inlet opening 8 for sucking in a delivery medium and an outlet opening 9 for ejecting the delivery medium.
- the housing cover 4 is arranged on the side of the hydraulic housing 3 opposite the inlet opening 8.
- the bearing bracket lantern 5 is attached to the side of the housing cover 4 facing away from the hydraulic housing 3.
- the bearing bracket 6 is attached to the side of the bearing bracket lantern 5 opposite the housing cover 4.
- the bearing cover 7 is in turn attached to the side of the bearing bracket 6 facing away from the bearing bracket lantern 5.
- An impeller shaft 13 rotatable about an axis of rotation A extends from a flow chamber 14 delimited by the hydraulic housing 3 and the housing cover 4 through an opening 15 provided in the housing cover 4 into the chamber 12.
- a Impeller 16 attached to the opposite shaft end is an inside the chamber 12 arranged inner rotor 17 is arranged.
- the inner rotor 17 is equipped with several magnets 18 which are arranged on the side of the inner rotor 17 facing the containment shell 10.
- a bearing arrangement 19 that is operatively connected to the impeller shaft 13 that can be driven to rotate about the axis of rotation A.
- a drive device for example a drive motor, preferably an electric motor, drives a drive shaft 20.
- the drive shaft 20, which can be rotatably driven about the axis of rotation A, is arranged essentially coaxially with the impeller shaft 13.
- the drive shaft 20 extends through the bearing cover 7 and the bearing bracket 6 and is supported in two ball bearings 21, 22 accommodated in the bearing bracket 6.
- an outer rotor 24 carrying a plurality of magnets 23 is arranged at the free end of the drive shaft 20, an outer rotor 24 carrying a plurality of magnets 23 is arranged.
- the magnets 23 are arranged on the side of the outer rotor 24 facing the containment shell 10.
- the outer rotor 24 extends at least partially over the containment shell 10 and interacts with the inner rotor 17 in such a way that the rotating outer rotor 24 also sets the inner rotor 17 and thus the impeller shaft 13 and the impeller 16 in a rotational movement by means of magnetic forces.
- the outer rotor 24 shown enlarged in FIG. 2 comprises a first carrier element 25.
- the first carrier element 25 comprises an annular disk 26 with a hub 27, the hub 27 being pushed onto the drive shaft 20 shown in FIG. 1 and on it with suitable ones Funds is attached.
- An annular collar 28 is formed on the annular disk 26, which collar extends axially in the direction of the containment can 10 or housing cover 4.
- the collar 28 has a smaller outer diameter than the annular disk 26.
- the first carrier element 25 thus has a region 29 with a reduced external diameter and a region 30 with an enlarged external diameter, whereby a step 31 is formed.
- the outer rotor 24 further comprises a hollow cylinder-like second carrier element 32 formed or arranged on the first carrier element 25, which at least partially surrounds the containment shell 10 and on which the magnets 23 are arranged.
- the second carrier element 32 is pushed over the collar 28, that is, the area 29 of the first carrier element 25 with a reduced outer diameter, the step 31 forming a stop device.
- the second carrier element 32 is fastened to the first carrier element 25 by means of the screws 33 shown in FIG. 1.
- the first and second carrier elements 25, 32 are shown as two parts that can be connected to one another by means of a screw connection. Alternatively, the two parts can be connected to each other using shrink technology. In a further exemplary variant, the first carrier element 25 and the hollow cylindrical part of the second carrier element 32 can be formed in one piece.
- the first carrier element 25 has a thermal barrier device 34.
- the thermal barrier 34 is disposed within the collar 28.
- the heat barrier device 34 comprises a heat insulating element 35 and a heat reflecting element 36.
- the heat insulating element 35 is essentially designed as a circular cylindrical body and made of a very poorly thermally conductive material, e.g. B. mica.
- the heat reflecting element 36 is designed essentially as a disk-shaped plate and made of a material with a high degree of heat reflection, e.g. B. a stainless steel alloy.
- the heat insulating element 35 rests against the annular disk 26 of the carrier element 25.
- the heat reflection element 36 in turn rests on the heat insulation element 35 and is thus arranged between the containment shell 10 and the heat insulation element 35 in the installed state in order to reflect back the thermal radiation emanating from the containment shell 10. In this way, the heat flow into the drive shaft 20 can be very strong be reduced.
- the outer jacket surfaces of the heat insulating element 35 and the heat reflection element 36 preferably rest against the inner jacket surface of the collar 28.
- At least one through-hole 37 is provided in the heat-reflecting element 36 and at least one through-hole 38 in the heat-insulating element 35, with both through-holes 37, 38 overlapping.
- the annular disk 26 of the first carrier element 25 has at least one threaded hole 39.
- Both through-bores 37, 38 are arranged lying above the threaded bore 39, in such a way that a fastening means 40, which is screw-like in the embodiment shown, extends through both through-bores 37, 38 and can be screwed into the threaded bore 39.
- Two or more through bores 37, 38 and threaded bores 39 are preferably provided.
- the at least one fastening means 40 is divided into three sections with different external diameters.
- a first section 41 forms a head 42.
- a second section 43 forms a shaft 44 connected to the head 42.
- a third section 45 adjoining the second section 43 is provided with an external thread 46.
- the outside diameter of the head 42 is larger than the outside diameter of the shaft 44.
- the outside diameter of the shaft 44 is in turn larger than the outside diameter of the external thread 46.
- the length of the shaft 44 is slightly smaller than the total thickness of the heat reflecting element 36 and the heat insulating element 35 if these are not yet installed. In this way, the heat reflection element 36 and heat insulation element 35 can be fixedly attached to the annular disk 26 of the first carrier element 25 with a defined pretension.
- the annular disk 26 of the outer rotor 24 has at least one through hole 47 which is in overlap with the through hole 38 in the heat insulating element 35.
- a The threaded bolt-like fastening means 48 formed in the heat reflection element 36 extends through the through hole 38 and through the through hole 47 of the annular disk 26.
- the fastening means 48 has an area 49 with a thread 50 at its free end.
- the thermal barrier device 34 can be fastened to the first carrier element 25 by means of a screw nut 51 that can be screwed onto the fastening means 48.
- Two or more through bores 38 are preferably provided in the heat insulating element 35 and in the annular disk 26 and a corresponding number of fastening means 48 are provided.
- a rivet-like fastening means 52 can also be used.
- At least one through hole 37 is provided in the heat reflection element 36, at least one through hole 38 in the heat insulating element 35 and at least one through hole 47 in the annular disk 26 of the outer rotor 24, the through holes 37, 38 and 47 being arranged in overlap.
- the inner circumferential surface of the collar 28 formed on the annular disk 26 of the first carrier element 25 has a radially circumferential groove 53 in which a securing ring 54 is inserted.
- This retaining ring 54 inserted in the groove 53 prevents axial movement of the thermal barrier device 34.
- the drive shaft 20 is connected to the output shaft of a motor (not shown), in particular an electric motor, via a coupling device.
- a motor not shown
- the invention can also be replaced, for example, in a pump arrangement designed in the so-called block design, in which the first carrier element is fastened directly to the output shaft of the motor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019002392.7A DE102019002392A1 (de) | 2019-04-02 | 2019-04-02 | Wärmesperre |
| PCT/EP2020/055836 WO2020200624A1 (de) | 2019-04-02 | 2020-03-05 | Wärmesperre |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3947976A1 true EP3947976A1 (de) | 2022-02-09 |
| EP3947976B1 EP3947976B1 (de) | 2023-06-07 |
| EP3947976C0 EP3947976C0 (de) | 2023-06-07 |
Family
ID=69846040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20712218.5A Active EP3947976B1 (de) | 2019-04-02 | 2020-03-05 | Wärmesperre |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11795971B2 (de) |
| EP (1) | EP3947976B1 (de) |
| KR (1) | KR102859179B1 (de) |
| CN (1) | CN113614379B (de) |
| DE (1) | DE102019002392A1 (de) |
| WO (1) | WO2020200624A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021102538A1 (pt) * | 2019-11-26 | 2021-06-03 | Petróleo Brasileiro S.A. - Petrobras | Bomba centrífuga para aquecimento de fluido por corrente parasita, e ferramenta submarina para aquecimento de fluido por corrente parasita |
| US12460647B2 (en) | 2022-05-03 | 2025-11-04 | General Electric Company | Integrated bearing systems for dynamically supporting shafts in pump systems |
| US12345279B2 (en) | 2022-05-03 | 2025-07-01 | General Electric Company | Oil lubricated fluid pumps with oil separators |
| US12601352B2 (en) | 2022-05-03 | 2026-04-14 | General Electric Company | High pressure magnetic coupling shrouds and methods of producing the same |
| US11891998B2 (en) | 2022-05-03 | 2024-02-06 | General Electric Company | Radially coupled pump systems for pressurizing fluid in closed loop systems |
| US12421968B2 (en) | 2022-05-03 | 2025-09-23 | General Electric Company | Axial flux motor driven pump systems for pressurizing fluid in closed loop systems |
| US12448978B2 (en) | 2022-05-03 | 2025-10-21 | General Electric Company | Layered barrier cans for pumps and methods of producing the same |
| US12331781B2 (en) | 2023-02-03 | 2025-06-17 | General Electric Company | Dual thrust bearing systems and methods for operating the same |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080112A (en) * | 1976-02-03 | 1978-03-21 | March Manufacturing Company | Magnetically-coupled pump |
| ATE77872T1 (de) * | 1986-11-20 | 1992-07-15 | Hermetic Pumpen Gmbh | Pumpe mit spaltrohrmotor- oder spaltrohrmagnetkupplungsantrieb. |
| JPH03237291A (ja) * | 1990-02-14 | 1991-10-23 | World Chem:Kk | マグネットポンプ |
| DE29610798U1 (de) * | 1996-06-20 | 1997-02-27 | Franz Klaus Union Armaturen, Pumpen GmbH & Co, 44795 Bochum | Modularer Bausatz zur Herstellung einer Pumpe, insbesondere einer Permanentmagnetkupplungspumpe |
| DE19721196A1 (de) * | 1997-05-21 | 1998-11-26 | Klein Schanzlin & Becker Ag | Maschinenaggregat mit integrierter Wärmesperre |
| DE29814113U1 (de) | 1998-08-06 | 1998-10-15 | Hermetic-Pumpen GmbH, 79194 Gundelfingen | Permanentmagnetkupplungspumpe |
| DE10057183A1 (de) * | 2000-11-17 | 2002-05-23 | Ksb Ag | Magnetkupplungspumpe für heiße Fördermedien |
| US6997688B1 (en) * | 2003-03-06 | 2006-02-14 | Innovative Mag-Drive, Llc | Secondary containment for a magnetic-drive centrifugal pump |
| US7101158B2 (en) | 2003-12-30 | 2006-09-05 | Wanner Engineering, Inc. | Hydraulic balancing magnetically driven centrifugal pump |
| DE202004013081U1 (de) * | 2004-08-20 | 2006-01-05 | Speck-Pumpen Walter Speck Gmbh & Co. Kg | Spalttopfpumpe |
| DE102009033111A1 (de) * | 2009-07-15 | 2011-02-03 | Ksb Aktiengesellschaft | Spalttopf |
| GB2471908B (en) | 2009-07-17 | 2011-11-16 | Hmd Seal Less Pumps Ltd | Non-intrusive vapour detector for magnetic drive pump |
| DE102013208536A1 (de) * | 2013-05-08 | 2014-11-13 | Ksb Aktiengesellschaft | Pumpenanordnung |
| DE102013208476A1 (de) * | 2013-05-08 | 2014-11-13 | Ksb Aktiengesellschaft | Pumpenanordnung |
| DE102013007849A1 (de) | 2013-05-08 | 2014-11-13 | Ksb Aktiengesellschaft | Pumpenanordnung |
| DE102013008795B3 (de) * | 2013-05-24 | 2014-08-21 | Ksb Aktiengesellschaft | Pumpenanordnung |
| DE202016100655U1 (de) * | 2016-02-10 | 2017-05-11 | Speck Pumpen Vakuumtechnik Gmbh | Magnetkupplungspumpe |
| DE102016105309A1 (de) | 2016-03-22 | 2017-09-28 | Klaus Union Gmbh & Co. Kg | Magnetkupplungspumpe |
| WO2017220119A1 (de) * | 2016-06-20 | 2017-12-28 | Pierburg Pump Technology Gmbh | Elektrische fluidpumpe für ein kraftfahrzeug |
| DE102017214997A1 (de) * | 2017-08-28 | 2019-02-28 | Mahle International Gmbh | Elektrische Fluidpumpe |
-
2019
- 2019-04-02 DE DE102019002392.7A patent/DE102019002392A1/de not_active Withdrawn
-
2020
- 2020-03-05 WO PCT/EP2020/055836 patent/WO2020200624A1/de not_active Ceased
- 2020-03-05 CN CN202080026648.XA patent/CN113614379B/zh active Active
- 2020-03-05 US US17/594,068 patent/US11795971B2/en active Active
- 2020-03-05 KR KR1020217031772A patent/KR102859179B1/ko active Active
- 2020-03-05 EP EP20712218.5A patent/EP3947976B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR102859179B1 (ko) | 2025-09-11 |
| US11795971B2 (en) | 2023-10-24 |
| CN113614379B (zh) | 2024-07-23 |
| KR20210142126A (ko) | 2021-11-24 |
| DE102019002392A1 (de) | 2020-10-08 |
| WO2020200624A1 (de) | 2020-10-08 |
| EP3947976B1 (de) | 2023-06-07 |
| US20220154730A1 (en) | 2022-05-19 |
| EP3947976C0 (de) | 2023-06-07 |
| CN113614379A (zh) | 2021-11-05 |
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