WO2015000717A2 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
WO2015000717A2
WO2015000717A2 PCT/EP2014/062991 EP2014062991W WO2015000717A2 WO 2015000717 A2 WO2015000717 A2 WO 2015000717A2 EP 2014062991 W EP2014062991 W EP 2014062991W WO 2015000717 A2 WO2015000717 A2 WO 2015000717A2
Authority
WO
WIPO (PCT)
Prior art keywords
drive module
cooling medium
cooling
heat exchanger
drive
Prior art date
Application number
PCT/EP2014/062991
Other languages
German (de)
English (en)
Other versions
WO2015000717A3 (fr
Inventor
Ali Kemal Kücükyavuz
Herbert SCHLOTTBOM
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2015000717A2 publication Critical patent/WO2015000717A2/fr
Publication of WO2015000717A3 publication Critical patent/WO2015000717A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • Cooling device The invention relates to a cooling device for an electric drive of a vertical mill.
  • the power loss of the windings and laminated cores of an electric motor which can be in a synchronous motor in a range of 1.5 to 3%, by means of an air-air or air-water heat exchanger till ⁇ leads.
  • WO 2007/031381 AI (Siemens) 22.03.2007 describes an electric machine with a stator having axially extending cooling ⁇ channels in the laminated core and / or between the stator and a housing, and a rotor whose laminated core on egg ⁇ ner Hub design is positioned with an inner bore, wherein in or on the laminated core permanent magnets are arranged.
  • the stator can be cooled by a water jacket cooling.
  • Such a machine may for example be a permanent-magnet synchronous motor.
  • the object is achieved by a cooling device according to claim 1.
  • the object is further achieved by a method according to claim 7.
  • Preferred developments of the invention are described in the dependent claims.
  • the cooling device is for an electric drive, for example a permanently excited synchronous motor, a vertical mill suitable.
  • the cooling device comprises a drive module to be cooled of the electric drive, a heat exchanger, a coolant tank and a pipe to pump a cooling medium in a closed circuit of the drive module via the heat exchanger and theisserffenbenzol ⁇ ter back to the drive module.
  • To be cooled to ⁇ drive module includes an encapsulated stator of the electric drive comprises.
  • the coolant tank has a breather ⁇ tion to prevent overpressure of the cooling medium in the circuit.
  • egg ner such a separation of the electrically excited active parts of an engine and the non-electrically excited active parts of a Mo ⁇ tors by an encapsulation of the stator are improved ignition protection and the restriction to a static seal.
  • the encapsulation is preferably formed on the inside of the stator by a tube, which may be made of a fiber composite material. On the one hand, this means that the tube is very stable and light and, on the other hand, this material is not electrically conductive, so that eddy currents in the tube can be avoided.
  • the method according to the invention serves for operating a cooling device for an electric drive of a vertical mill.
  • the cooling device comprises a cooling system drive module of the electric drive, a heat exchanger, a coolant tank and a pipe, wherein the drive module to be cooled comprises an encapsulated stator of the electric drive.
  • a cooling medium is pumped in a closed loop from the drive module via the heat exchanger and the coolant reservoir back to the drive module.
  • the coolant tank is so breather ⁇ tet that a pressure of the coolant in the circuit verhin ⁇ changed is.
  • the invention is based on the realization that a efficien ⁇ te cooling of a closed and thus not accessible to air cooling vertical mill drive can be realized when the cooling medium cools the heat source directly, and the components of the cooling device can be mounted from the outside and accessible.
  • the invention solves the cooling of drive modules, which can not be sufficiently cooled due to their relatively high heat output with a pure water jacket cooling.
  • the cooling device according to the invention can be advantageously used for a mill drive system of a vertical mill, as described in EP 2295147 AI (Siemens) 16.03.2011.
  • This is a mill drive system having a below a grinding plate which can be arranged transmission with at ⁇ least one planetary and / or spur gear which has a verti ⁇ kale shaft position, and in a case of the Ge ⁇ drive integrated electric motor, the rotor and Stator have vertically extending axes.
  • This drive concept has a motor that is installed in the gear housing under the planetary stages.
  • the cooling medium is an oil, in particular a transformer oil.
  • a transformer oil is characterized by a very good cooling effect.
  • the heat exchanger is an air or water cooler.
  • the cooling device comprises a control unit for controlling ei ⁇ nes volume flow of the recirculated cooling medium and / or a power of the heat exchanger.
  • a control unit for controlling ei ⁇ nes volume flow of the recirculated cooling medium and / or a power of the heat exchanger.
  • the drive module to an entry port for entry of thedeme ⁇ diums in the drive unit and one vertically above the inlet opening lying discharge orifice for discharging the cooling medium from the drive module.
  • a preferred embodiment of the invention is a Verti ⁇ kalmühle with a cooling device as described in this text loading wrote.
  • the level of the cooling medium in the coolant reservoir is maintained above the level of the cooling medium in the drive module. In this way it can be ensured that heat-emitting components of the stator, e.g. current-carrying windings are completely covered by the cooling medium.
  • the cooling medium is kept pressureless in a closed circuit.
  • at least part of the housing or the encapsulation of the drive module of the electric drive to be cooled consists of a pressure-sensitive material, e.g. from a fiber composite with lower strength values than conventional metallic materials such as
  • FIG. 1 a circuit of the cooling medium
  • Fig. 2 shows an embodiment of the cooling device in section.
  • Fig. 1 shows schematically a circuit of the cooling medium.
  • a flowed through by the cooling medium drive module 10 of elekt ⁇ cal drive, such as a stator electrically excited containing capsule, has an outlet opening 10.1, from which the cooling medium, after it has withdrawn the drive module 10 heat, exiting the drive module 10. Via a fluid line 13.1, the cooling medium is led to a heat exchanger 11, where it gives off heat to another medium, eg air or water.
  • the cooled out of the heat exchanger 11 exiting cooling medium is passed through a further fluid line 13.2 to a coolant ⁇ container 12.
  • the coolant tank 12 serves as a storage tank and as a compensation tank. With the temperature, the volume of the contained ⁇ requested in the closed circuit cooling medium is growing. A heat-related increase in volume of the cooling medium is absorbed by the sufficiently sized volume of the coolant tank 12. In order to avoid an undesirable overpressure in the closed loop system, the coolant tank 12 has a ventilation device
  • Circulatory system ismothery ⁇ by at least one pump 14.
  • the pump 14 is downstream of the outlet Opening 10.1 of the drive module 10 maral ⁇ tet in the circuit, where it works suction.
  • the cooling device also has a control device 17, which controls the control of a volume flow of the circulated cooling medium, i. the pump power of the pump 14, and / or a cooling capacity of the heat exchanger 11 is used.
  • Fig. 2 shows an embodiment of the invention.
  • a Cape was 10 which comprises an electrically excited stator of a permanent-magnet synchronous motor for driving a grinding table egg ⁇ ner vertical mill stands serving for cooling transformer oil up to a predetermined level 15 so that all blazeab ⁇ forming parts, in particular the current-carrying Windings of the stator, completely covered with oil.
  • the capsule 10 is hermetically closed. Due to its con ⁇ structive structure - the capsule wall of the capsule 10 facing the not shown, electrically non-excited rotor of the motor is formed by a cylindrical tube piece of a Fa ⁇ serverbundtechnikstoff - is an overpressure in the Kap ⁇ sel 10 undesirable.
  • the heated oil is sucked by a pump 14 from the capsule 10, for example, with a Un ⁇ tertik of 0.8 bar, and through a pipe 13.1 to an oil-air heat exchanger 11 transported.
  • a pump 14 from the capsule 10
  • it may be an oil-water heat exchanger.
  • the cooled in the heat exchanger 11 oil is through a pipe
  • the dimensioning of the coolant tank 12 is example ⁇ chosen so that at an oil temperature of 20 ° C the Level 15 of the transformer oil is in the refrigerant tank 12 in the stator can 10 is equal to the Ni ⁇ veau of the transformer oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un dispositif de refroidissement (1) pour une commande électrique d'un broyeur vertical. Le dispositif de refroidissement (1) comprend un module de commande (10) à refroidir de la commande électrique, un échangeur de chaleur (11), un réservoir de fluide de refroidissement (12) et une conduite (13), pour pomper un liquide, en circuit fermé, à partir du module de commande (10) pour le faire passer par l'échangeur de chaleur (11) et le réservoir de fluide de refroidissement (12), avent de le réacheminer jusqu'au module de commande (10). Le module de commande (10) à refroidir comprend un stator encapsulé de la commande électrique. Le réservoir d'agent de refroidissement (12) présente un dispositif de ventilation (12,1) pour éviter une surpression du fluide de refroidissement dans le circuit.
PCT/EP2014/062991 2013-07-03 2014-06-20 Dispositif de refroidissement WO2015000717A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013213002.3A DE102013213002A1 (de) 2013-07-03 2013-07-03 Kühleinrichtung
DE102013213002.3 2013-07-03

Publications (2)

Publication Number Publication Date
WO2015000717A2 true WO2015000717A2 (fr) 2015-01-08
WO2015000717A3 WO2015000717A3 (fr) 2015-09-03

Family

ID=51134028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/062991 WO2015000717A2 (fr) 2013-07-03 2014-06-20 Dispositif de refroidissement

Country Status (2)

Country Link
DE (1) DE102013213002A1 (fr)
WO (1) WO2015000717A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020114596A1 (de) 2020-06-02 2021-12-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektromotor-Kühlanordnung
DE102022113565B3 (de) * 2022-05-30 2023-11-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Antriebseinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031381A1 (fr) 2005-09-16 2007-03-22 Siemens Aktiengesellschaft Machine electrique comportant des aimants permanents
EP2295147A1 (fr) 2009-09-10 2011-03-16 Siemens Aktiengesellschaft Système d'entraînement de moulin
DE102010039397A1 (de) 2010-08-17 2012-02-23 Siemens Aktiengesellschaft Elektrische Maschine mit Ölkapselung um ein Aktivteil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542336A1 (fr) * 2002-08-21 2005-06-15 Toyota Jidosha Kabushiki Kaisha Moteur de vehicule
DE10314065A1 (de) * 2003-03-28 2004-10-07 Elektro-Leffek Gmbh & Co Kg Kühlvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031381A1 (fr) 2005-09-16 2007-03-22 Siemens Aktiengesellschaft Machine electrique comportant des aimants permanents
EP2295147A1 (fr) 2009-09-10 2011-03-16 Siemens Aktiengesellschaft Système d'entraînement de moulin
DE102010039397A1 (de) 2010-08-17 2012-02-23 Siemens Aktiengesellschaft Elektrische Maschine mit Ölkapselung um ein Aktivteil

Also Published As

Publication number Publication date
DE102013213002A1 (de) 2015-01-08
WO2015000717A3 (fr) 2015-09-03

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