WO2015120836A1 - Corrugated wall transformer tank with overheating protection - Google Patents

Corrugated wall transformer tank with overheating protection Download PDF

Info

Publication number
WO2015120836A1
WO2015120836A1 PCT/DE2015/000061 DE2015000061W WO2015120836A1 WO 2015120836 A1 WO2015120836 A1 WO 2015120836A1 DE 2015000061 W DE2015000061 W DE 2015000061W WO 2015120836 A1 WO2015120836 A1 WO 2015120836A1
Authority
WO
WIPO (PCT)
Prior art keywords
boiler
pump
wall
interior
oil
Prior art date
Application number
PCT/DE2015/000061
Other languages
German (de)
French (fr)
Other versions
WO2015120836A4 (en
Inventor
Jürgen Solms
Original Assignee
Loos & Co. Kg
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 Loos & Co. Kg filed Critical Loos & Co. Kg
Priority to DE112015000797.0T priority Critical patent/DE112015000797A5/en
Priority to EP15713627.6A priority patent/EP3105765A1/en
Publication of WO2015120836A1 publication Critical patent/WO2015120836A1/en
Publication of WO2015120836A4 publication Critical patent/WO2015120836A4/en

Links

Classifications

    • 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
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • 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
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Definitions

  • the invention relates to a Wellwandtrafokessel according to the preamble of patent claim 1.
  • the heat loss generated in the transformer windings is transmitted via the coolant to the boiler walls, which have a comparatively large surface area due to the waves and dissipate the heat by radiation and convection to the environment.
  • transformer oil used as a coolant has in the pockets of the waves a pronounced temperature-dependent height stratification such that hot oil accumulates in the upper boiler area, while in the bottom region of the boiler is relatively cold oil.
  • the heat output in the middle and lower regions of the waves may be too low. Too hot oil in the upper winding area limits the transformer output and has a negative effect on the life of the transformer.
  • the invention has for its object to improve the heat output of the corrugated walls.
  • the pump can be regulated depending on the temperature in an advantageous development of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

In order to improve the heat dissipation of a corrugated wall transformer tank, it is proposed that hot oil is suctioned by means of a pump through the pockets of the waves.

Description

Wellwandtrafokessel mit Überhitzungsschutz  Corrugated wall transformer boiler with overheating protection
Die Erfindung betrifft einen Wellwandtrafokessel nach dem Ober- begriff des Patentanspruchs 1. The invention relates to a Wellwandtrafokessel according to the preamble of patent claim 1.
Bei den gattungsgemäßen Kesseln wird die in den Trafo- Wicklungen erzeugte Verlustwärme über das Kühlmittel an die Kesselwände übertragen, die aufgrund der Wellen eine vergleichsweise große Oberfläche aufweisen und die Wärme durch Strahlung und Konvektion an die Umgebung abführen. In the generic boilers, the heat loss generated in the transformer windings is transmitted via the coolant to the boiler walls, which have a comparatively large surface area due to the waves and dissipate the heat by radiation and convection to the environment.
Das als Kühlmittel eingesetzte Trafoöl weist jedoch in den Taschen der Wellen eine ausgeprägte temperaturabhängige Höhenschichtung derart auf, daß sich heißes Öl im oberen Kesselbereich ansammelt, während sich im Bodenbereich des Kessels verhältnismäßig kaltes Öl befindet. However, the transformer oil used as a coolant has in the pockets of the waves a pronounced temperature-dependent height stratification such that hot oil accumulates in the upper boiler area, while in the bottom region of the boiler is relatively cold oil.
Dadurch ist die Wärmeabgabe im mittleren und unteren Bereich der Wellen, insbesondere bei großer Trafoleistung und hohen Außentemperaturen, unter Umständen zu gering. Zu heißes Öl im oberen Wicklungsbereich begrenzt die Trafoleistung und wirkt sich nachteilig auf die Lebensdauer des Trafos aus. Der Erfindung liegt die Aufgabe zugrunde, die Wärmeabgabe der Wellwände zu verbessern. As a result, the heat output in the middle and lower regions of the waves, in particular at high transformer output and high outside temperatures, may be too low. Too hot oil in the upper winding area limits the transformer output and has a negative effect on the life of the transformer. The invention has for its object to improve the heat output of the corrugated walls.
BESTÄTIGUNGSKOPIE Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. CONFIRMATION COPY According to the invention, this object is achieved by the characterizing features of patent claim 1.
Durch die Strömungsleitplatte, die in den Wellen der jeweiligen Kesselwand obere und untere Öffnungen freilässt, kann durch den unteren Saugraum, der gegen das Kesselinnere abgedichtet ist und in den das Saugrohr einer Pumpe ragt, heißes Öl durch die Wellentaschen nach unten gesaugt werden, so daß die erwähnte Höhenschichtung des Öls unter deutlicher Absenkung der oberen Temperatur beseitigt wird. Das von der Pumpe geförderte Öl wird druck- seitig wieder in das Kesselinnere zurückgeführt. Through the Strömungsleitplatte which leaves in the shafts of the respective boiler wall upper and lower openings, hot oil can be sucked through the shaft pockets down through the lower suction chamber, which is sealed against the interior of the boiler and into which the suction pipe of a pump protrudes, so that the mentioned height stratification of the oil is eliminated with a clear lowering of the upper temperature. The oil pumped by the pump is returned to the inside of the boiler on the pressure side.
Die Pumpe kann bei einer vorteilhaften Weiterbildung der Erfindung temperaturabhängig geregelt sein. The pump can be regulated depending on the temperature in an advantageous development of the invention.
Es ist auch möglich, die Pumpe im Kesselinneren einzubauen.  It is also possible to install the pump inside the boiler.

Claims

Patentansprüche claims
Wel 1 wandkessel für ölgekühlte Transformatoren, wobei die Wellwände aus Stahlblech bestehen und eine Vielzahl von vertikal, parallel zueinander verlaufenden Wellen mit zum Kessel inneren hin offenen Taschen aufweisen, die an ihren oberen und unteren Enden flüssigkeitsdicht verschweißt sind, dadurch gekennzeichnet, daß die Öffnungen der Taschen mindestens einer Wellwand bis auf obere Eintrittsöffnungen und untere Austrittsöffnungen für das Trafoöl mittels einer Strömungsleitplatte zum Kesselinneren hin abgedeckt sind, wobei die unteren Austrittsöffnungen von einem zum Kesselinneren hin abgedichteten Saugraum umgeben sind, der mit der Saugseite einer Pumpe verbunden ist, die das angesaugte Öl ins Kesselinnere pumpt. A wall-mounted boiler for oil-cooled transformers, wherein the corrugated walls are made of sheet steel and having a plurality of vertical, parallel shafts with inner pockets open towards the boiler, which are liquid-tightly welded at their upper and lower ends, characterized in that the openings of the Pockets are covered at least one corrugated wall to upper inlet openings and lower outlet openings for the transformer oil by means of a Strömungsleitplatte towards the interior of the boiler, the lower outlet openings are surrounded by a sealed to the boiler interior suction chamber, which is connected to the suction side of a pump, which sucked the oil pumping into the boiler interior.
Wel 1 wandkessel nach Anspruch 1, dadurch gekennzeichnet, daß die Pumpe temperaturabhängig geregelt ist. Wel 1 wall boiler according to claim 1, characterized in that the pump is temperature-dependent regulated.
Wel 1 wandkessel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Pumpe im Kesselinneren eingebaut ist. Wel 1 wall boiler according to claim 1 or 2, characterized in that the pump is installed in the boiler interior.
PCT/DE2015/000061 2014-02-14 2015-02-11 Corrugated wall transformer tank with overheating protection WO2015120836A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112015000797.0T DE112015000797A5 (en) 2014-02-14 2015-02-11 Corrugated wall transformer boiler with overheating protection
EP15713627.6A EP3105765A1 (en) 2014-02-14 2015-02-11 Corrugated wall transformer tank with overheating protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014002096.7 2014-02-14
DE102014002096.7A DE102014002096A1 (en) 2014-02-14 2014-02-14 Corrugated wall transformer boiler with overheating protection

Publications (2)

Publication Number Publication Date
WO2015120836A1 true WO2015120836A1 (en) 2015-08-20
WO2015120836A4 WO2015120836A4 (en) 2015-10-08

Family

ID=52784865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/000061 WO2015120836A1 (en) 2014-02-14 2015-02-11 Corrugated wall transformer tank with overheating protection

Country Status (3)

Country Link
EP (1) EP3105765A1 (en)
DE (2) DE102014002096A1 (en)
WO (1) WO2015120836A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE340229C (en) * 1919-02-16 1921-09-10 Siemens Schuckertwerke G M B H Oil transformer housing with cooler pockets separated from the transformer by partition walls
GB293108A (en) * 1927-03-29 1928-06-29 Charles Algernon Parsons Improvements in and relating to means for cooling transformer windings
DE19812607A1 (en) * 1998-03-23 1999-10-28 Loos & Co Kg Heat dissipative enclosure for fluid-cooled transformers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7318527U (en) * 1974-10-03 Lepper Dominit Transformatoren Gmbh Radiator arrangement
US4745966A (en) * 1986-07-22 1988-05-24 Westinghouse Electric Corp. Heat exchangers and electrical apparatus having heat exchangers
DE202012000930U1 (en) * 2012-01-28 2012-02-27 Loos & Co. Kg Transformer boiler with cooling tube
DE202012003599U1 (en) * 2012-04-04 2012-05-09 Loos & Co. Kg Transformer boiler with cross-section variable cooling channels
BR112015012829B8 (en) * 2012-12-12 2023-04-25 Siemens Ag EXPANSION RADIATOR FOR A HERMETICLY SEALED ELECTRIC TRANSFORMER
DE102013002526A1 (en) * 2013-02-13 2014-08-14 Loos & Co. Kg Liquid-cooled three-phase AC transformer operating method, involves providing flowing coolants in annular gap of windings of winding body, and forming slot-shaped aperture in bottom portion to pass cooled coolant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE340229C (en) * 1919-02-16 1921-09-10 Siemens Schuckertwerke G M B H Oil transformer housing with cooler pockets separated from the transformer by partition walls
GB293108A (en) * 1927-03-29 1928-06-29 Charles Algernon Parsons Improvements in and relating to means for cooling transformer windings
DE19812607A1 (en) * 1998-03-23 1999-10-28 Loos & Co Kg Heat dissipative enclosure for fluid-cooled transformers

Also Published As

Publication number Publication date
DE112015000797A5 (en) 2017-02-09
EP3105765A1 (en) 2016-12-21
WO2015120836A4 (en) 2015-10-08
DE102014002096A1 (en) 2015-08-20

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