EP0551554A1 - Kühleinrichtung für den Bordtransformator einer elektrischen Lokomotive - Google Patents

Kühleinrichtung für den Bordtransformator einer elektrischen Lokomotive Download PDF

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Publication number
EP0551554A1
EP0551554A1 EP92107433A EP92107433A EP0551554A1 EP 0551554 A1 EP0551554 A1 EP 0551554A1 EP 92107433 A EP92107433 A EP 92107433A EP 92107433 A EP92107433 A EP 92107433A EP 0551554 A1 EP0551554 A1 EP 0551554A1
Authority
EP
European Patent Office
Prior art keywords
cooler
cooling system
transformer
electric car
car body
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.)
Withdrawn
Application number
EP92107433A
Other languages
English (en)
French (fr)
Inventor
Michitada c/o Mitsubishi Denki K. K. Endo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0551554A1 publication Critical patent/EP0551554A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C3/00—Electric locomotives or railcars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/20—Cooling by special gases or non-ambient air

Definitions

  • This invention relates to a cooling system for a transformer to be mounted on an electric car such as an electric locomotive.
  • Figs. 12 and 13 illustrate a conventional cooling system for an electric car mounting transformer disclosed for example in "Electrical Equipment of the Three-Phase DB Class E 120 Universal Main-Line Locomotive" Rail Engineering International, July/September 1979, in which reference numeral 1 is an electric car such as an electric locomotive, 2 is a floor which is a base frame of the electric car 1, 3 is a car body wall or a frame of the electric car 1 and has side walls 3a, a top wall 3b and front and rear walls 3c.
  • Reference numeral 11 is a transformer mounted to the bottom surface of the floor 2
  • 12 is a oil circulating pump
  • 13 is an oil cooler installed on the floor 2 of the electric car
  • 14 are oil supply pipes
  • 15 is an electrically insulating cooling oil.
  • reference numeral 16 is a fan for the oil cooler
  • 17 is an air duct for allowing atmosphere air to flow from the bottom of the floor through the oil cooler 13 and to be discharged from the top wall 3b
  • 18 is a conservator
  • 19 are various electric equipments other than the transformer.
  • the heat generated at the transformer 11 is used to heat the cooling oil 15.
  • the cooling oil 15 thus heated to an elevated temperature is supplied through the oil pipe 14 by means of the oil pump 12 to the oil cooler 13, where it is cooled by an air flow from the outside supplied by the fan 16.
  • the external air flow heated by the oil cooler 13 is discharged to the outside through the top wall 3b which is a roof of the car body through the air duct 17.
  • the cooling oil 15 cooled to a lower temperature is supplied through the oil supply pipe again to the transformer 11 to cool the transformer 11.
  • a conservator 18 is provided for accommodating expansion and contraction due to heat of the cooling oil 15.
  • the refrigerant used is oil. Therefore, the transformer is classified as incombustible, which is not desirable for the safety against the vehicle fire accidents. Also, since the transformer and the cooler are disposed at separated remote positions, the cooler and the pipes connected between the transformer and the cooler also have fear of fire accidents. Further, the longer the circulating pipes, heavier the weight of the cooling oil, so that the pipes themselves for supporting the coil increases, resulting in increase of the weight of the entire electric car. Also, since the oil is incompressive, a large conservator for accommodating the expansion and contraction of the cooling oil due to temperature change in the transformer, the cooler and the like, so that the installation of the system into the vehicle body is extremely difficult.
  • the cooler in practice must be positioned at relatively close to the transformer, so that the mounting position of the cooler is restricted, leading to a small degree of freedom of the layout design of other electric apparatuses on the electric locomotive.
  • the object of the present invention is to eliminate the above-discussed problems of the conventional cooling system of the electric car mounting transformer and to provide a cooling system for an electric car mounting transformer in which the cooler is not limited as to its mounting position within the electric car and is relatively freely installed in a space which is not occupied by other apparatuses, and in which the transformer and the transformer cooling system are incombustible and safe.
  • the refrigerant for cooling the transformer is an SF6 gas and the cooler for cooling the refrigerant is disposed to the electric car body wall.
  • the refrigerant for cooling the transformer is an SF6 gas and the cooler for cooling the refrigerant is disposed to the electric car body wall, the transformer and the cooling system is incombustible and is very high in safety. Also, since the specific weight of the refrigerant is about 1/60 of that of the mineral oil, the weight increase by the increased length of the pipes in the cooling system is small. Further, since the refrigerant is compressible, there is no need for the conservator, whereby the installation of the transformer on the electric car body is not limited even when the pipes are long. Finally, since the cooler can be mounted to the electric car body wall, the cooling of the cooler can be effectively achieved by utilizing the running wind.
  • an electric car 1 such as an electric locomotive comprises a floor 2 which is a car body base frame and a car body wall 3 disposed on the floor 2.
  • the car body wall 3 comprises car body side walls 3a, a car body top wall 3b and car body front and rear end walls 3c.
  • an electric car mounting transformer 21 is mounted on the bottom surface of the floor 2 of the electric car 1.
  • the transformer 21 comprises an iron core 21b and a coil 21c contained in a tank 21a.
  • the cooling system of the electric car mounting transformer comprises pipes 24 connected to the tank 21a of the transformer 21 for supplying a refrigerant within the tank 21a to coolers 23 by a circulating blower 22.
  • the pipes 24 are provided with connection portions 31 capable of opening and closing and opened during the operation as described in more detail later in connection Fig. 12.
  • the refrigerant 25 absorbs the heat from the iron core 21b and the coil 21c of the transformer 21 to cool them.
  • the coolers 23 are for cooling the refrigerant 25 supplied from the pipes 24 after it is heated by the transformer 21.
  • the refrigerant 25 is cooled at the coolers 23 by the external air passing therethrough and supplied to the transformer 21 by the return pipe 24 to cool the transformer 21 again.
  • the refrigerant 25 is an SF6 gas.
  • the coolers 23 are disposed to the car body walls 3 of the electric car 1.
  • the coolers 23 have a thickness similar to that of the car body side walls 3a and is mounted in an embedded relationship to ventilation openings formed in the both car body side walls 3a, so that they do not decrease the available volume of the compartment defined by the car body walls 3a to 3c.
  • the coolers 23 are disposed within air passages for a fan 27 for supplying the external air through a duct 28 for cooling a main motor 26 mounted under the floor 2. Therefore, the coolers 23 are cooled by the flow of the external air generated by the fan 27, so that a blower only for the purpose of cooling the coolers 23 is not necessary.
  • Figs. 3 and 4 illustrate another embodiment of the present invention.
  • the coolers 33 are disposed on the car body top wall 3b. That is, the cooling system of the electric car mounting transformer comprises pipes 34 connected to a tank 31a of a transformer 31 for supplying a refrigerant 35 within the tank 31a to the coolers 33 by means of a circulating blower 32.
  • the refrigerant 35 absorbs the heat from the iron core 31b and the coil 31c of the transformer 31 to cool them.
  • the refrigerant 35 flows through the pipes 34 to the coolers 33 where it is cooled by the external air and supplied through the return pipe 34 to the transformer 31 to cool it.
  • the coolers 33 are embedded in the car body top wall 3b which is the roof of the electric car 1.
  • the coolers 33 are disposed within an air duct 39 for cooling coolers 38 of other electric equipments 36 such as an electric power converter apparatus, so that they are cooled by the external air flow generated in the air duct 39 by a fan 37. Therefore, the compartment volume of the electric car is not occupied by the coolers 33, and the coolers 33 do not need blowers only for them.
  • the SF6 gas coolers must be larger in size than the oil coolers, since the coolers can be mounted to the car body walls and they do not have to be mounted on the floor, the installation of other electric apparatuses is not limited, and the available floor space is increased because the space which has heretofore been used for the coolers can be used for other electric apparatuses.
  • the car body walls 3 such as the car body side walls 3a or top wall 3b usually have a certain thickness due to the structural members therein, the coolers may be designed to have a thickness similar to or slightly larger than the thickness of the car body walls 3, whereby the coolers can be embedded within the car body walls.
  • the coolers are disposed to the car body walls 3 and running wind intake means for receiving an air flow generated by the running vehicle or the running wind and for generating an air flow through the coolers. Therefore, the cooling fan for the coolers is not necessary, so that the noise from the fan is eliminated, the maintenance and repair of the fan are completely unnecessary, and the electric power for operating the fan is not necessary.
  • a plurality of coolers 43 are disposed on the car body top wall 3b to outwardly project from the top surface thereof and they are arranged in a staggered relationship so that each cooler 43 can sufficiently receive a fresh, cold running wind 41 end not the air flow which is exhausted from the preceding cooler 43.
  • the clearances between the cooling fins or tubes of the coolers 43 are made relatively large in order that these clearances are not clogged by foreign matters.
  • coolers 53 are disposed to the car body front and rear walls.
  • change-over valves 54 are disposed for switching these change-over valves 54 in accordance with the running direction of the electric car so that the front cooler 53 in relation to the direction of travel of the vehicle is connected to the transformer 21 to circulate the refrigerant therethrough.
  • the front cooler 53 is exposed to a large amount of running wind 41 and an effective cooling can be achieved, so that the cooler 53 can be small.
  • the air flow that passed through the cooler 53 is guided as shown by an arrow 42 by an exhaust duct 55 to be discharged below the car body floor 2.
  • coolers 63 are embedded in their major portions in the car body side walls 3a and contained within a running wind duct 65 having an air intake 64 open toward the front side on the car body side walls 3a.
  • the coolers 63 are arranged in a staggered relationship to improve the cooling efficiency.
  • the height of projection of the coolers 63 from the car body side walls 3a is relatively small, which is advantageous from the design view point.
  • the example shown in Fig. 8 utilizes a heat exchanger 74 having a heat pipe 73 as a cooler. More particularly, the heat exchanger 74 is connected to the pipe 24 under the floor 2 extended from the circulating pump 22, and a plurality of heat pipes 73 extend from the heat exchanger 74 upwardly along the car body side wall 3a. The refrigerant in the pipe 24 is cooled through the heat exchanger 74 and the heat pipe 73 by the running wind 41 flowing along the car body side wall 3a. In this embodiment, the external coolers to be exposed to the running wind on the car body side walls 3a can be made extremely compact.
  • Fig. 9 illustrates detailed structure of the transformer 21 and the circulating blower 22.
  • the transformer 21 comprises a tank 21a, an iron core 21b contained in the tank 21a and a coil 21c wound around the iron core 21b.
  • the circulating blower 22 is disposed within the tank 21a, and the discharge duct 22a of the blower 22 is connected to the pipe 24, so that, when the blower 22 is driven, the refrigerant gas circulates between the transformer 21 and the coolers 23 and the like while cooling the transformer 21.
  • the circulating blower 22 is mounted by mounting brackets 27 attached to support beds 26 secured to the bottom of the tank 21a and vibration dumping means which is a vibration dumping material 28 such as a suitable rubber is interposed therebetween so that the vibration of the blower 22 is prevented to transmit to the tank 21a and generate noise.
  • vibration dumping means which is a vibration dumping material 28 such as a suitable rubber is interposed therebetween so that the vibration of the blower 22 is prevented to transmit to the tank 21a and generate noise.
  • Fig. 12 schematically illustrates the junction portion 31 which is inserted into the pipe 24 and which makes the manufacture, shipping, assembly, maintenance and inspection of the pipes and the transformer 21 easily carried out. More particularly, switch valves 31a and 31b which can be operated from the outside and which can seal the refrigerant gas are disposed at both ends of first and second gas pipes 24a and 24b and a flexible connection pipe 31c is connected between both ends.
  • the cooling system When it is desired to manufacture in the shop the cooling system for the electric car mounting transformer of the present invention, to ship to the site and to mount on an electric car, the cooling system must be disassembled into the transformer 21, the gas pipes 24 and the gas coolers 23 and the transformer 21 and the coolers 23 must be filled with an SF6 gas at a prescribed pressure.
  • the switch valves 31a and 31b at each end of the pipes 24a attached to the transformer 21 and the coolers 23 are sealingly closed and the refrigerant gas is filled therein, whereby the disassembled components can be shipped to the site.
  • the transformer 21 At the assembly site, the transformer 21 is mounted to the floor 2, the coolers 23 are mounted to the car body walls 3 and the pipes 24 are connected between these components.
  • connection portions 31 that can be opened and closed in the pipes 24, the need to achieve the gas refrigerant filling operation at the site such as vehicle assembling shop is eliminated and the installation can be made easy. Also, by closing the switch valves 31c of the connection portion 31 upon the disassembly or the inspection of the cooling system, the leakage of the gas refrigerant can be minimized.
  • the refrigerant for the transformer is SF6 gas, so that the transformer and the cooling system are incombustible, and the coolers are mounted to the car body walls, so that the installation space available for the equipments to be installed on the car floor can be increased.
  • the coolers can be positioned in a more advantageous position.
  • the coolers may be disposed within a cooling duct for another electric apparatus to commonly use the cooling fan, or the electric car running wind may be utilized to eliminate the need for the cooling fan.
  • the electric car When no fan is used for the cooler, it is advantageous from the stand point of space, cost, weight and the like and the electric car can be made low-noise.
  • the noise reduction By containing the circulating blower for the gas refrigerant within the transformer tank, the noise reduction can be further progressed. Further, by providing the connection portions in the pipes, the need for the refrigerant gas to be filled at site is eliminated, and the manufacture, the shipping, the assembly, the maintenance and inspection of the cooling system can be made easy.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transformer Cooling (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP92107433A 1992-01-17 1992-04-30 Kühleinrichtung für den Bordtransformator einer elektrischen Lokomotive Withdrawn EP0551554A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP688192 1992-01-17
JP6881/92 1992-01-17

Publications (1)

Publication Number Publication Date
EP0551554A1 true EP0551554A1 (de) 1993-07-21

Family

ID=11650580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107433A Withdrawn EP0551554A1 (de) 1992-01-17 1992-04-30 Kühleinrichtung für den Bordtransformator einer elektrischen Lokomotive

Country Status (4)

Country Link
EP (1) EP0551554A1 (de)
KR (1) KR960013032B1 (de)
TW (1) TW208680B (de)
WO (1) WO1993014507A1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596790A1 (de) * 1992-11-06 1994-05-11 Gec Alsthom Transport Sa Hochspannungs-Ausstattungseinheit für elektrisches Schienentreibfahrzeug
DE19914565A1 (de) * 1999-03-31 2000-10-05 Abb Daimler Benz Transp Einrichtung zur Kühlung von wärmeproduzierenden Baukomponenten eines elektrischen Schienenfahrzeugs
EP1054500A1 (de) * 1999-05-17 2000-11-22 Alstom Lüftungsvorrichtung für Elektromotorantrieb
WO2001085516A1 (en) * 2000-05-11 2001-11-15 Bombardier Inc. Non-electric locomotive and enclosure for a turbine engine for a non-electric locomotive
WO2005124799A2 (de) * 2004-06-18 2005-12-29 Siemens Aktiengesellschaft Anordnung zur kühlung von komponenten von windkraftanlagen
WO2008031752A1 (de) * 2006-09-15 2008-03-20 Bombardier Transportation Gmbh Fahrzeug mit einem kanal für elektrische leitungen
CN104085401A (zh) * 2014-06-30 2014-10-08 南车株洲电机有限公司 一种轨道车辆牵引变压器悬挂装置以及轨道车辆
DE102014203894A1 (de) * 2014-03-04 2015-09-10 Siemens Aktiengesellschaft Schienenfahrzeug mit Kühleinrichtung
JP2016016728A (ja) * 2014-07-08 2016-02-01 三菱電機株式会社 鉄道車両の発熱体冷却装置
EP2873549A4 (de) * 2012-07-13 2016-06-29 Kawasaki Heavy Ind Ltd Verbindungsstruktur für einen haupttransformator und einen hochspannungsvorrichtungskasten sowie schienenfahrzeug mit dieser struktur
WO2018114125A1 (de) * 2016-12-22 2018-06-28 Innogy Se Umspannstation, verfahren und vorrichtung für eine umspannstation
WO2024022770A1 (de) * 2022-07-28 2024-02-01 Siemens Mobility GmbH Schienenfahrzeug

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923146B (zh) * 2011-08-08 2015-03-25 中国北车集团大同电力机车有限责任公司 机车辅助滤波柜冷却系统
CN108451331B (zh) * 2018-01-31 2024-02-27 天津城建大学 自动保温隔热可通风围挡装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638056A (en) * 1946-08-01 1953-05-12 Forges Et Ateliers De Construc Electric locomotive
FR1146044A (fr) * 1955-01-25 1957-11-05 Thomson Houston Comp Francaise Perfectionnements aux appareils électriques isolés par un gaz électronégatif
US4241666A (en) * 1976-08-19 1980-12-30 Asea Aktiebolag Railway car electric traction motor air cooling system
EP0082360A1 (de) * 1981-12-09 1983-06-29 Mitsubishi Denki Kabushiki Kaisha Kühlvorrichtung für elektrischen Transformator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246435A (en) * 1975-10-13 1977-04-13 Nippon Electric Ind Co Ltd Cooling system in equipment
JPS58112309A (ja) * 1981-12-25 1983-07-04 Toshiba Corp 変圧器
JPS6281013A (ja) * 1985-10-04 1987-04-14 Toshiba Corp 自冷式ガス絶縁変圧器
JPH0738347B2 (ja) * 1987-08-07 1995-04-26 関西電力株式会社 ガス絶縁電磁誘導機器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638056A (en) * 1946-08-01 1953-05-12 Forges Et Ateliers De Construc Electric locomotive
FR1146044A (fr) * 1955-01-25 1957-11-05 Thomson Houston Comp Francaise Perfectionnements aux appareils électriques isolés par un gaz électronégatif
US4241666A (en) * 1976-08-19 1980-12-30 Asea Aktiebolag Railway car electric traction motor air cooling system
EP0082360A1 (de) * 1981-12-09 1983-06-29 Mitsubishi Denki Kabushiki Kaisha Kühlvorrichtung für elektrischen Transformator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS PAS-101 no. 2, 6 July 1982, NEW-YORK pages 2229 - 2235 SATO ET AL. 'cooling effect by gas density of sf6 gas insulated transformer' *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 123 (E-178)(1268) 27 May 1983 & JP-A-58 042 210 ( MITSUBISHI DENKI K.K. ) 11 March 1983 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596790A1 (de) * 1992-11-06 1994-05-11 Gec Alsthom Transport Sa Hochspannungs-Ausstattungseinheit für elektrisches Schienentreibfahrzeug
DE19914565A1 (de) * 1999-03-31 2000-10-05 Abb Daimler Benz Transp Einrichtung zur Kühlung von wärmeproduzierenden Baukomponenten eines elektrischen Schienenfahrzeugs
EP1054500A1 (de) * 1999-05-17 2000-11-22 Alstom Lüftungsvorrichtung für Elektromotorantrieb
WO2001085516A1 (en) * 2000-05-11 2001-11-15 Bombardier Inc. Non-electric locomotive and enclosure for a turbine engine for a non-electric locomotive
WO2005124799A2 (de) * 2004-06-18 2005-12-29 Siemens Aktiengesellschaft Anordnung zur kühlung von komponenten von windkraftanlagen
WO2005124799A3 (de) * 2004-06-18 2006-06-01 Siemens Ag Anordnung zur kühlung von komponenten von windkraftanlagen
US7443273B2 (en) 2004-06-18 2008-10-28 Siemens Aktiengesellschaft Arrangement for cooling of components of wind energy installations
WO2008031752A1 (de) * 2006-09-15 2008-03-20 Bombardier Transportation Gmbh Fahrzeug mit einem kanal für elektrische leitungen
US9831644B2 (en) 2012-07-13 2017-11-28 Kawasaki Jukogyo Kabushiki Kaisha Connection structure between main transformer and high-voltage device box and railcar including same
EP2873549A4 (de) * 2012-07-13 2016-06-29 Kawasaki Heavy Ind Ltd Verbindungsstruktur für einen haupttransformator und einen hochspannungsvorrichtungskasten sowie schienenfahrzeug mit dieser struktur
DE102014203894A1 (de) * 2014-03-04 2015-09-10 Siemens Aktiengesellschaft Schienenfahrzeug mit Kühleinrichtung
CN104085401A (zh) * 2014-06-30 2014-10-08 南车株洲电机有限公司 一种轨道车辆牵引变压器悬挂装置以及轨道车辆
JP2016016728A (ja) * 2014-07-08 2016-02-01 三菱電機株式会社 鉄道車両の発熱体冷却装置
WO2018114125A1 (de) * 2016-12-22 2018-06-28 Innogy Se Umspannstation, verfahren und vorrichtung für eine umspannstation
CN110140267A (zh) * 2016-12-22 2019-08-16 英诺吉能源公司 变电站，用于变电站的方法和设备
US10854369B2 (en) 2016-12-22 2020-12-01 Innogy Se Transformer station, method and apparatus for a transformer station
WO2024022770A1 (de) * 2022-07-28 2024-02-01 Siemens Mobility GmbH Schienenfahrzeug

Also Published As

Publication number Publication date
WO1993014507A1 (en) 1993-07-22
KR937003691A (ko) 1993-11-30
TW208680B (de) 1993-07-01
KR960013032B1 (ko) 1996-09-25

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