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1. 发明公开

EP4418286A1 A COOLING ARRANGEMENT FOR COOLING A TRANSFORMER 审中-公开
公开(公告)号：EP4418286A1
公开(公告)日：2024-08-21
申请号：EP23157294.2
申请日：2023-02-17
申请人： Hitachi Energy Ltd
发明人： SAND, Ulf , HOSAIN, Lokman , SALINAS, Ener , PRADHAN, Manoj Kumar
IPC分类号： H01F27/12 , F15D1/00
CPC分类号： H01F27/12
摘要： The disclosure relates to a cooling arrangement (1) for cooling a transformer (10) in a transformer tank (12), the cooling arrangement (1) comprises a transformer tank (12), to be at least partially filled with an electrically insulating fluid when in use, a transformer (10) having windings (16), at least one heat exchanger (18), and a fluid discharge device (20) arranged in the transformer tank (12), fluidly connected to the at least one heat exchanger (18), and a pump (22) in fluid communication with the at least one heat exchanger (18) and with the fluid discharge device (20). The fluid discharge device (20) comprises at least one Coand effect fluid flow multiplier (21) configured to discharge the cooled fluid along a discharge axis (c) towards one or more of the windings (16) of the at least one phase leg (14) of the transformer (10).

2. 发明公开

EP4413600A1 STATIC ELECTRIC INDUCTION DEVICE AND OPERATING METHOD 审中-实审
公开(公告)号：EP4413600A1
公开(公告)日：2024-08-14
申请号：EP22818085.7
申请日：2022-11-21
申请人： Hitachi Energy Ltd
发明人： LANERYD, Tor , GUSTAFSSON, Andreas Gustaf Thomas
IPC分类号： H01F27/32 , H01F27/12
CPC分类号： H01F27/322 , H01F27/12

3. 发明公开

EP4376033A1 COOLING ARRANGEMENT AND METHOD FOR COOLING AT LEAST ONE OIL-TO-AIR EXTERNAL HEAT EXCHANGER 审中-公开
公开(公告)号：EP4376033A1
公开(公告)日：2024-05-29
申请号：EP22208856.9
申请日：2022-11-22
申请人： Hitachi Energy Ltd
发明人： BEL FDHILA, Rebei , SAND, Ulf , HOSAIN, Lokman
IPC分类号： H01F27/12 , F04F5/16 , F28D1/02
CPC分类号： F28D2021/003120130101 , F28D1/024 , H01F27/12 , F04F5/16 , F04D25/08 , F05D2250/5220130101 , F05D2270/17320130101 , F05D2260/60120130101
摘要： A cooling arrangement (20) for cooling at least one OAEHE in a transformer. The cooling arrangement (20) comprises at least one impeller-motor device (10), at least one fluid pipe (11) and a first fluid discharge device (12). The first fluid discharge device (12) comprises a fluid inlet arranged to receive a fluid from the at least one fluid pipe (11), and at least one fluid outlet arranged to direct the fluid towards the OAEHE, wherein the at least one impeller-motor device (10) is adapted to supply the fluid to the inlet of the first fluid discharge device (12) via the at least one fluid pipe (11) and cause the fluid to flow through the at least one fluid outlet of the first fluid discharge device (12) in a direction of the at least one OAEHE. The cooling arrangement (20) further comprises a second fluid discharge device (22) adapted to disturb the fluid that flows through the at least one fluid outlet of the first fluid discharge device (12).

4. 发明授权

EP2831894B1 ORTSNETZ-TRANSFORMATOR 有权转让
公开(公告)号：EP2831894B1
公开(公告)日：2018-12-26
申请号：EP13720298.2
申请日：2013-04-23
申请人： Siemens Aktiengesellschaft
发明人： GRIEPENTROG, Gerd , HANDT, Karsten , HIPSZKI, Gyula , SCHMID, Ronald , SUKOSD, Zsolt
IPC分类号： H01F27/12 , H01F29/02
CPC分类号： H01F27/12 , H01F29/025 , H01F29/04

5. 发明公开

EP3378071A1 EINE KÜHLFLÜSSIGKEIT ENTHALTENDES GEHÄUSE EINES ELEKTRISCHEN GERÄTES 审中-公开
公开(公告)号：EP3378071A1
公开(公告)日：2018-09-26
申请号：EP17700934.7
申请日：2017-01-13
申请人： Siemens Aktiengesellschaft
发明人： FINDEISEN, Jörg
IPC分类号： H01F27/02 , H01F27/12 , H05K7/20
CPC分类号： H01F27/025 , H01F27/12
摘要： The invention relates to a housing (10), which contains a cooling liquid (30), of an electric device (1). The housing (10) comprises at least one barrier (20, 21, 22) which is arranged in the housing interior, is impermeable to the cooling liquid (30), and separates a first housing interior region (13 to 16), lying between the barrier and a lateral housing wall (11) of the housing (10), from a second housing interior region (13 to 16). The barrier is designed to increase a cooling liquid flow of the cooling liquid (30) between the interior regions (13 to 16) separated by the barrier in the event that the fill state height (H) of the cooling liquid (30) in the housing (10) rises due to the temperature.

6. 发明公开

EP3373313A1 BERSTSICHERER STROMWANDLER, INSBESONDERE FÜR TRIEBWAGEN 审中-公开
公开(公告)号：EP3373313A1
公开(公告)日：2018-09-12
申请号：EP18160156.8
申请日：2018-03-06
申请人： RITZ Instrument Transformers GmbH
发明人： Brockmann, Olaf , Spreitzer, Johann , Pscheidl, Jörg
IPC分类号： H01F27/04 , H01F27/14 , H01F27/28 , H01F27/40
CPC分类号： H01F27/04 , H01F27/02 , H01F27/12 , H01F27/324 , H01F38/30
摘要： Bei einem Stromwandler, insbesondere auf Triebwagen mit elektrischem Antrieb, mit einem Stromwandler-Element (6) ist das Stromwandler-Element angeordnet in einem gesonderten, berstsicheren Gehäuse (2). Es umfasst einen Hauptkörper (21) und einen Deckel (3), wobei in einem Innenraum des Gehäuses (2) zwischen Stromwandler-Element (6) und Deckel (3) ein Expansionsraum (30) gebildet ist. Erfindungsgemäß sind deckelnah zwei Hochstrom-Durchführungsbolzen (5) vorgesehen, die elektrisch vom Gehäuse (2) isoliert sind. Deren Außenteil fungiert als Anschlusselement. Deren Innenteil ragt in den Expansionsraum (30) und ist mit den Anschlüssen der Stromwandler-Einheit (6) verbunden. Dank der erfindungsgemäßen Anordnung der querschnittsstarken Durchführungsbolzen (5) unter Nutzung des Expansionsraums wird daher kein (oder kaum) zusätzlicher Bauraum benötigt. Die Durchführungsbolzen sind von dem Gehäuse elektrisch isoliert. Eine Verzweigung des Stroms über das Gehäuse, wie bei den bekannten Spannungswandlern, kann so vermieden werden. Die Erfindung stellt einen berstsicheren Stromwandler in sehr kompakter Ausführung bereit, der dennoch zur Übertragung hoher Stromstärken geeignet ist.

7. 发明授权

EP1960850B1 STEUERUNGSVERFAHREN ZUR KÜHLUNG EINER TECHNISCHEN ANLAGE 有权转让
公开(公告)号：EP1960850B1
公开(公告)日：2018-08-29
申请号：EP06830422.9
申请日：2006-12-06
申请人： Siemens Aktiengesellschaft
发明人： BRETZNER, Thomas , ECKERT, Günter , REBLING, Walter , THEURER, Helmut
IPC分类号： G05B13/02 , H01F27/12 , G05D23/19
CPC分类号： G05D23/19 , H01F27/12

8. 发明公开

EP3327736A1 METHOD FOR DETERMINING ABNORMALITY IN OIL-FILLED ELECTRIC APPARATUS 有权
公开(公告)号：EP3327736A1
公开(公告)日：2018-05-30
申请号：EP15898862.6
申请日：2015-07-17
申请人： Mitsubishi Electric Corporation
发明人： KURIYAMA, Ryota , KATO, Fukutaro , HAYAMIZU, Shiki , TOYAMA, Satoru , MIZUNO, Kota
IPC分类号： H01F27/00
CPC分类号： G01N33/2841 , G01R31/00 , H01F27/00 , H01F27/004 , H01F27/12
摘要： The present invention is a diagnosis method for internal fault of an oil-immersed electric apparatus using a silicone oil as an insulating oil. The method diagnoses an internal fault of the oil-immersed electric apparatus based on a first concentration ratio that is a concentration ratio between two gases selected from an analysis gas group consisting of hydrogen gas, methane gas, ethane gas, and ethylene gas contained in the silicone oil, and a second concentration ratio that is a concentration ratio between the other two gases selected from the analysis gas group. A combination of the two gases and a combination of the other two gases are a combination of ethylene gas and hydrogen gas, a combination of ethane gas and hydrogen gas, a combination of ethylene gas and methane gas, or a combination of methane gas and ethane gas.

9. 发明公开

EP3171372A4 IN-VEHICLE VOLTAGE-TRANSFORMING DEVICE 有权
公开(公告)号：EP3171372A4
公开(公告)日：2018-04-04
申请号：EP14897848
申请日：2014-07-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： NODA TOSHIHIRO , IWAMOTO NAOKI
IPC分类号： H01F27/12 , H01F30/04
CPC分类号： H01F27/12 , H01F29/02
摘要： Provided are: a tank configured to contain an iron core, three or more windings, and a plurality of insulating plates and filled with insulation oil; a plurality of spacers each interposed between a winding and an insulating plate facing each other to provide a flow path for the insulation oil; a pump configured to cause the insulation oil to flow; and a switching circuit. A part of the spacers have a smaller flow resistance to the insulation oil flowing in one direction than a flow resistance to the insulation oil flowing in another direction opposite to the one direction. Another part of the spacers have a smaller flow resistance to the insulation oil flowing in the other direction than a flow resistance to the insulation oil flowing in the one direction. The pump is configured to cause the insulation oil to flow in the one direction when the part of the windings is incorporated in an electric circuit by the switching circuit, and the pump is configured to cause the insulation oil to flow in the other direction when the other part of the windings is incorporated in the electric circuit by the switching circuit.

10. 发明授权

EP2079086B1 Elektrische Transformator-Einheit 有权
标题翻译：电力变压器单元
公开(公告)号：EP2079086B1
公开(公告)日：2018-03-28
申请号：EP08021702.9
申请日：2008-12-15
申请人： General Electric Technology GmbH
发明人： Stirl, Tobias , Ellerik, Martin , Hoba, Günther
IPC分类号： F28F27/00 , F28D15/00 , H01F27/02 , F28D1/02 , H01F27/12
CPC分类号： H01F27/12 , F28D1/024 , F28D15/00 , F28F27/00 , H01F27/025

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