CA1245756A - Transformer cooling structure with u-shaped cooling panels - Google Patents
Transformer cooling structure with u-shaped cooling panelsInfo
- Publication number
- CA1245756A CA1245756A CA000472089A CA472089A CA1245756A CA 1245756 A CA1245756 A CA 1245756A CA 000472089 A CA000472089 A CA 000472089A CA 472089 A CA472089 A CA 472089A CA 1245756 A CA1245756 A CA 1245756A
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- tank
- header
- panel
- panels
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/20627—Liquid coolant without phase change
- H05K7/20645—Liquid coolant without phase change within cabinets for removing heat from sub-racks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
- F28D1/0316—Assemblies of conduits in parallel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A transformer cooling structure characterized by a plurality of coolant fluid cooling panels extending outwardly from the transformer tank wall, the facing sides of adjacent cooling panels including U-shaped channels including two legs and a bight portion with each leg portion having abutting peripheral edge portions and end portions that are secured with corresponding sides in a fluid-tight seal, the panel sides being roll formed to provide coolant outlet header means and coolant inlet header means, and the panel also including gas storage means on the side of the coolant outlet header means opposite the coolant inlet header means.
A transformer cooling structure characterized by a plurality of coolant fluid cooling panels extending outwardly from the transformer tank wall, the facing sides of adjacent cooling panels including U-shaped channels including two legs and a bight portion with each leg portion having abutting peripheral edge portions and end portions that are secured with corresponding sides in a fluid-tight seal, the panel sides being roll formed to provide coolant outlet header means and coolant inlet header means, and the panel also including gas storage means on the side of the coolant outlet header means opposite the coolant inlet header means.
Description
~2~i756 `
- 1 51,651 TRANSFORMER COOLING STRUCTURE WITH
U-SHAPED COOLING PANELS
BACKGROUND OF THE INVENTION
Field of the Invention:
This invention relates to a heat exchange unit for cooling of dielectric fluid of an electrical trans-former or other device employing a circulating fluidcoolant.
De c~E_ion of the Prior Art:
Electrical apparatus, such as transformers or induçtion regulators, is placed within a tank and immersed in a bath of insulating and cooling oil, which insulates varicus parts of the apparatus from one another, and, by circulation and conduction transfers the heat qenerated in the apparatus to the walls of the tank. To facilitate removal of heat from the walls, cooling panels or heat exchangers are mountad on the walls for dissipating the heat to ambient air.
Associated with the foregoing have been problems of transformer size and efficiency. More particularly, it is desirable to minimize the volume of cooling fluid in the transformer in order to reduce the unit volume and therefore the cost of the cooling fluid and the supporting structure.
SUMMARY OF THE INVENTION
In accordance with this invention, the foregoing problems may be overcome by providing a tank for a trans-~,.
, ~z~s~
- 1 51,651 TRANSFORMER COOLING STRUCTURE WITH
U-SHAPED COOLING PANELS
BACKGROUND OF THE INVENTION
Field of the Invention:
This invention relates to a heat exchange unit for cooling of dielectric fluid of an electrical trans-former or other device employing a circulating fluidcoolant.
De c~E_ion of the Prior Art:
Electrical apparatus, such as transformers or induçtion regulators, is placed within a tank and immersed in a bath of insulating and cooling oil, which insulates varicus parts of the apparatus from one another, and, by circulation and conduction transfers the heat qenerated in the apparatus to the walls of the tank. To facilitate removal of heat from the walls, cooling panels or heat exchangers are mountad on the walls for dissipating the heat to ambient air.
Associated with the foregoing have been problems of transformer size and efficiency. More particularly, it is desirable to minimize the volume of cooling fluid in the transformer in order to reduce the unit volume and therefore the cost of the cooling fluid and the supporting structure.
SUMMARY OF THE INVENTION
In accordance with this invention, the foregoing problems may be overcome by providing a tank for a trans-~,.
, ~z~s~
2 51~
former submerged in a cooling fluid, the tank ~omprising apreferably rectan~ular cross-section having opposite side walls, a plurality of cooling panels extending outwardly from the plane of at least one side wall which panel comprises a pair of oppositely disposed sheet metal sides having facing peripheral edges and end portions that are secured together in a fluid-tight seal, the facing sides of adjacent panels comprising two legs of a U-shaped channel including a bight portion in between, each sheet metal side being formed to include a coolant fluid outlet header near one end and a coolant fluid inlet header at the other end, and the panels including gas storage means on the side of the coolant fluid outlet header opposite that of the coolant fluid inlet header.
The advantage of the tank structure of this invention is that inasmuch as each transformer has a prescribed required volume for gas, the gas header in the coolant panels provides storage space in communication with the top of the transformer, whereby the top portion of the transformer may be reduced in size.
RIEF DESCRIPTION OF THE DRAWINGS
Figure l is a schematic view of a transformer tank with heat exchanger panels extending from opposite 6ides thereof in accordance with this invention;
Figure 2 is a horizontal sectional view taken on the line II-II of Figure l;
Figure 3 is an enlarged elevational view, taken on the line III-III of Figure l of a cooling panel, with an associated transformer tank portion shown partially ln section;
Figure 4 is an enlarged elevational view of another embodiment of the panel showing spot weld locations without vertical channels formed into the panel sides;
A Figure 5 is a schematic vie~ showing the panel embodiment of Figure 3 having spot welds along the vertical channels of the panel side;
t takev7 ~3f7 / i~ V
~s~
former submerged in a cooling fluid, the tank ~omprising apreferably rectan~ular cross-section having opposite side walls, a plurality of cooling panels extending outwardly from the plane of at least one side wall which panel comprises a pair of oppositely disposed sheet metal sides having facing peripheral edges and end portions that are secured together in a fluid-tight seal, the facing sides of adjacent panels comprising two legs of a U-shaped channel including a bight portion in between, each sheet metal side being formed to include a coolant fluid outlet header near one end and a coolant fluid inlet header at the other end, and the panels including gas storage means on the side of the coolant fluid outlet header opposite that of the coolant fluid inlet header.
The advantage of the tank structure of this invention is that inasmuch as each transformer has a prescribed required volume for gas, the gas header in the coolant panels provides storage space in communication with the top of the transformer, whereby the top portion of the transformer may be reduced in size.
RIEF DESCRIPTION OF THE DRAWINGS
Figure l is a schematic view of a transformer tank with heat exchanger panels extending from opposite 6ides thereof in accordance with this invention;
Figure 2 is a horizontal sectional view taken on the line II-II of Figure l;
Figure 3 is an enlarged elevational view, taken on the line III-III of Figure l of a cooling panel, with an associated transformer tank portion shown partially ln section;
Figure 4 is an enlarged elevational view of another embodiment of the panel showing spot weld locations without vertical channels formed into the panel sides;
A Figure 5 is a schematic vie~ showing the panel embodiment of Figure 3 having spot welds along the vertical channels of the panel side;
t takev7 ~3f7 / i~ V
~s~
3 51,651 Figure 6 is a schematic view of the panel of Figure 4 showing the location of spot welds without panel channels; and Figure 7 is a vertical sectional view taken on the line VII-VII of Figure 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Figure 1 a transformer structure is generally indicated at 11 and it comprises a tank 13 which contains a transformer unit 15, and which includes two banks 17, 19 of heat exchanger panels 21 extending from opposite sides of the tank.
Although the tank 13 is described as containing a transformer unit 15, it is understood that other elec-trical apparatus that is operated and submerged ~ithin a cooling or dielectric fluid 22 (Figure 3) is within the scope of this invention.
The transformer structure 11 is comprised of a pair of opposite end walls 23, 25, a bottom wa:L1 27, a top wall 29, opposite side walls 31, 33 on which the heat exchanger panels 21 are mounted. Four similar support braces or angle members 35 are located at the corners where the several walls converge. The walls 23, 33 and braces 35 are secured together in a suitable manner, such as by welds, along adjacent edges to form the rectangular tank structure (Figure 1~. It is understood, however, that any other structure, such as octagonal or cylindrical, may be used. Also, although two heat exchanger banks 17, 19 are provided on opposite sides, any other nu~ber of banks, such as one bank 17, or three or more banks of similar structure, may be provided on corresponding exter-nal walls of the tank.
To facilitate assembly and rigidity of structure, the end walls 23, 25 include similar flanges 37, 39. The flanges 37 at the lower ends of the end walls 23, 25 cooperate with the angle members 35 to reinforce each other. Bars 40 reinforce the bottom wall and contribute to the rigidity of the planar end walls 23, 25. The 5~
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Figure 1 a transformer structure is generally indicated at 11 and it comprises a tank 13 which contains a transformer unit 15, and which includes two banks 17, 19 of heat exchanger panels 21 extending from opposite sides of the tank.
Although the tank 13 is described as containing a transformer unit 15, it is understood that other elec-trical apparatus that is operated and submerged ~ithin a cooling or dielectric fluid 22 (Figure 3) is within the scope of this invention.
The transformer structure 11 is comprised of a pair of opposite end walls 23, 25, a bottom wa:L1 27, a top wall 29, opposite side walls 31, 33 on which the heat exchanger panels 21 are mounted. Four similar support braces or angle members 35 are located at the corners where the several walls converge. The walls 23, 33 and braces 35 are secured together in a suitable manner, such as by welds, along adjacent edges to form the rectangular tank structure (Figure 1~. It is understood, however, that any other structure, such as octagonal or cylindrical, may be used. Also, although two heat exchanger banks 17, 19 are provided on opposite sides, any other nu~ber of banks, such as one bank 17, or three or more banks of similar structure, may be provided on corresponding exter-nal walls of the tank.
To facilitate assembly and rigidity of structure, the end walls 23, 25 include similar flanges 37, 39. The flanges 37 at the lower ends of the end walls 23, 25 cooperate with the angle members 35 to reinforce each other. Bars 40 reinforce the bottom wall and contribute to the rigidity of the planar end walls 23, 25. The 5~
4 51,651 flanges 37 at the upper end of the end walls likewise cooperate with the upper pair of angle members 35 for reinforcing the members with the walls and for providing a base for welding of the top wall 29 in place. The inturned flanges 39 on both end walls provide a base on which the side walls 31, 33 are welded. The end wall 23 comprises an opening 41 for the mounting of low voltage bushings ~not shown~. Likewise, the end wall 25 comprises a number of openings 43 in which high voltage bushings ~not shown) may be mounted. The openings 41, 43 are disposed merely to indicate that such bushings may be mounted in the end walls. Alternatively, the bushings may be mounted in openings in the top wall 29.
Each heat exchanger panel 21 is comprised of a lS pair of oppositely disposed sides 45, 47 ~Figure 2) which are sheet-like members formed from sheet stock by rolling in one direction to form oppositely disposed channels 4g and 51. Corresponding pairs of corrugation~ ~9, 51 are aligned and oppositely disposed to provide longitudinally extending fluid flow conduits 53 between which convex portions 55, 57 are disposed in aligned, surface-to-surface contact for fluid-tight separation between adjacent con-duits 53.
The panel sides 45, 47 also comprise convex portions 59, 61 ~Figure 7), respectively, which extend transversely of the panels and which are aligned ~Figure 7) to provide a fluid conducting header 63 ~Figure 3). A
similar fluid-conducting header 65 is provided at the lower end of the panel by providing the panel sides 45, 47 with convex portions 67, 69, respectively. At the upper end of the panel 21 a similar fluid-conducting header 71 is provided by forming convex portions 73, 75 at the upper end of the panels 21. All of the fluid-conducting headers 63, 65, 71 are formed by the aligned corresponding conve~
portions that are preferably perpendicular to the conduits 53. When assembled, the upper and lower transverse ends as well as the longitudinal edges are welded at 77, 79, 81 ~57~6 51,651 in surface-towsurface, fluid-tight contact ~roviding a fluid-tight panel which serves as a heat exchanger for the cooling fluid from the interior of the tank 13, whereby the fluid 2~ ~asses through an opening 82 to enter the ~ows
Each heat exchanger panel 21 is comprised of a lS pair of oppositely disposed sides 45, 47 ~Figure 2) which are sheet-like members formed from sheet stock by rolling in one direction to form oppositely disposed channels 4g and 51. Corresponding pairs of corrugation~ ~9, 51 are aligned and oppositely disposed to provide longitudinally extending fluid flow conduits 53 between which convex portions 55, 57 are disposed in aligned, surface-to-surface contact for fluid-tight separation between adjacent con-duits 53.
The panel sides 45, 47 also comprise convex portions 59, 61 ~Figure 7), respectively, which extend transversely of the panels and which are aligned ~Figure 7) to provide a fluid conducting header 63 ~Figure 3). A
similar fluid-conducting header 65 is provided at the lower end of the panel by providing the panel sides 45, 47 with convex portions 67, 69, respectively. At the upper end of the panel 21 a similar fluid-conducting header 71 is provided by forming convex portions 73, 75 at the upper end of the panels 21. All of the fluid-conducting headers 63, 65, 71 are formed by the aligned corresponding conve~
portions that are preferably perpendicular to the conduits 53. When assembled, the upper and lower transverse ends as well as the longitudinal edges are welded at 77, 79, 81 ~57~6 51,651 in surface-towsurface, fluid-tight contact ~roviding a fluid-tight panel which serves as a heat exchanger for the cooling fluid from the interior of the tank 13, whereby the fluid 2~ ~asses through an opening 82 to enter the ~ows
5 header 63 and ~w vertically through the conduits 53 to the header 65 from where it is return~ed through an opening 85 to the tank chamber.
In accordance with this invention, the facing sides of adjacent panels 2 , such as oppcsite sides ~5a and 47a (Figure 2), are integral with bight portion 87 which sides and portion constitute a U-shaped member formed from sheet metal stock material. That is, the legs 45a, 47a and the bight portion 87 comprise a ~J-shaped channel with the legs comprising opposite sides of adjacent panels 21 when the bight portions form one outer wall of the tank 13. The inner ends of opposite sides 45, 47 of each panel are preferably welded at 89 which welds extend between openings 91, 82, 85. The opening 91 t~igure 3) is in the tank wall and communicates between the hoader 71 and the interior of the tank above the oil level 22, whereby gas, such as nitrogen, is free to expand into the header as well as the conduits 54 between headers 71, 63.
As the temperature of the transformer unit 13 increases during operation, the heated coolant fluid rises to the level and moves through the openings 82, the headers 63, downwardly through the conduits 53 to the lower header 65 and then through the openings 85 to the lower portion of the tank 13, thereby completing a cooling cycle. The upper portions of the heat exchanging panels 21 above the fluid-conducting headers 63, which comprise the upper ends 54 of the conduits 53 and the fluid-conducting header 71, provide for gas circulation between the upper portion of the tank 13 and the heat exchanging panels 21. An addi-tional function of the upper portions of the panels is to absorb expansion of the volume of the fluid wh~re excess heating occurs. The upper portions of the several panels 21 above the fluid-conducting headers 63 extend to the 5~
In accordance with this invention, the facing sides of adjacent panels 2 , such as oppcsite sides ~5a and 47a (Figure 2), are integral with bight portion 87 which sides and portion constitute a U-shaped member formed from sheet metal stock material. That is, the legs 45a, 47a and the bight portion 87 comprise a ~J-shaped channel with the legs comprising opposite sides of adjacent panels 21 when the bight portions form one outer wall of the tank 13. The inner ends of opposite sides 45, 47 of each panel are preferably welded at 89 which welds extend between openings 91, 82, 85. The opening 91 t~igure 3) is in the tank wall and communicates between the hoader 71 and the interior of the tank above the oil level 22, whereby gas, such as nitrogen, is free to expand into the header as well as the conduits 54 between headers 71, 63.
As the temperature of the transformer unit 13 increases during operation, the heated coolant fluid rises to the level and moves through the openings 82, the headers 63, downwardly through the conduits 53 to the lower header 65 and then through the openings 85 to the lower portion of the tank 13, thereby completing a cooling cycle. The upper portions of the heat exchanging panels 21 above the fluid-conducting headers 63, which comprise the upper ends 54 of the conduits 53 and the fluid-conducting header 71, provide for gas circulation between the upper portion of the tank 13 and the heat exchanging panels 21. An addi-tional function of the upper portions of the panels is to absorb expansion of the volume of the fluid wh~re excess heating occurs. The upper portions of the several panels 21 above the fluid-conducting headers 63 extend to the 5~
6 51,651 upper end of the side walls and thereby resist excess pressures in the tank.
Another embodiment of the invention is shown in Figure 4 in which a panel 95 is substantially similar to the panel 21 for which reason similar numerals refer to similar parts. The panel 9~ differs from that of panel 21 in that opposite sides 97, 99 are provided with spaced spot welds 101 disposed in a symmetrical pattern over and between the panel sides 97, 99. In this manner, the liquid coolant enters the panel 95 through the upper header 63 and flows downwardly through the panel around and between the several spot welds 101 to the lower header 65.
For a comparison of the difference in structure of the panels 21, 95, reference is made to Figures 5 and 6, respectively. Thus, the panel 21 includes a plurality of spaced vertical channels 49 which are lined with corre-sponding channels 51 which are held together by spaced spot welds 103 to form vertical conduits 53 through which the dielectric fluid 2~ passes in heat exchange relation with the ambient atmosphere. The panel 95 (Figure 6), however, includes only spot welds 101 for holding the opposite sides 97, 99 together so that the dielectric fluid is free to flow around and between the spot welds in vertical as well as lateral movement.
In conclusion, the transformer structure of this invention incorporates the coolers, or heat exchange units, with the tank wall function. The cooler panels are assembled by providing peripheral welds along the joining edges of U-shaped panel structures having a common bight portion which forms the outer wall of the transformer.
Finally, each transformer has a required volume of gas for which a gas header is provided in the panels of fins which is used as part of the gas space.
Another embodiment of the invention is shown in Figure 4 in which a panel 95 is substantially similar to the panel 21 for which reason similar numerals refer to similar parts. The panel 9~ differs from that of panel 21 in that opposite sides 97, 99 are provided with spaced spot welds 101 disposed in a symmetrical pattern over and between the panel sides 97, 99. In this manner, the liquid coolant enters the panel 95 through the upper header 63 and flows downwardly through the panel around and between the several spot welds 101 to the lower header 65.
For a comparison of the difference in structure of the panels 21, 95, reference is made to Figures 5 and 6, respectively. Thus, the panel 21 includes a plurality of spaced vertical channels 49 which are lined with corre-sponding channels 51 which are held together by spaced spot welds 103 to form vertical conduits 53 through which the dielectric fluid 2~ passes in heat exchange relation with the ambient atmosphere. The panel 95 (Figure 6), however, includes only spot welds 101 for holding the opposite sides 97, 99 together so that the dielectric fluid is free to flow around and between the spot welds in vertical as well as lateral movement.
In conclusion, the transformer structure of this invention incorporates the coolers, or heat exchange units, with the tank wall function. The cooler panels are assembled by providing peripheral welds along the joining edges of U-shaped panel structures having a common bight portion which forms the outer wall of the transformer.
Finally, each transformer has a required volume of gas for which a gas header is provided in the panels of fins which is used as part of the gas space.
Claims (4)
1. A tank for electrical apparatus submerged in a cooling fluid for transferring heat from said apparatus to the walls of the tank for dissipation therefrom, comprising:
(a) wall means forming a fluid-containing casing, (b) a portion of the wall means having inlet and outlet means for the fluid, (c) a plurality of spaced cooling panels extending outwardly from the wall means for dissipating heat to an ambient atmosphere, (d) each cooling panel having a pair of oppositely disposed sides forming fluid-passage means, (e) the facing sides of adjacent spaced cooling panels comprising a U-shaped member having two legs and bight portion formed from a single sheet of stock material, (f) the pair of oppositely disposed sides having abutting peripheral edge portions and end portions that are secured together in a fluid-tight seal, (g) one header in the panel extending from the outlet means and another header in the panel extending from the inlet means, (h) the panels including gas storage means on the side of said one header opposite said other header, and (i) the wall means including gas passage means between the gas storage means and the interior of the tank.
(a) wall means forming a fluid-containing casing, (b) a portion of the wall means having inlet and outlet means for the fluid, (c) a plurality of spaced cooling panels extending outwardly from the wall means for dissipating heat to an ambient atmosphere, (d) each cooling panel having a pair of oppositely disposed sides forming fluid-passage means, (e) the facing sides of adjacent spaced cooling panels comprising a U-shaped member having two legs and bight portion formed from a single sheet of stock material, (f) the pair of oppositely disposed sides having abutting peripheral edge portions and end portions that are secured together in a fluid-tight seal, (g) one header in the panel extending from the outlet means and another header in the panel extending from the inlet means, (h) the panels including gas storage means on the side of said one header opposite said other header, and (i) the wall means including gas passage means between the gas storage means and the interior of the tank.
2. The tank of claim 1 in which the sheet members comprise U-shaped channels including the two legs and a bight portion.
3. The tank of claim 2 in which at least one of the oppositely disposed sides include aligned corrugated surface portions forming spaced fluid-conducting headers and fluid conduits extending between said one and other header.
4. The tank of claim 3 in which the oppositely disposed sides comprise fluid-tight sealing means between the corrugated surface portions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57344284A | 1984-01-24 | 1984-01-24 | |
| US573,442 | 1984-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1245756A true CA1245756A (en) | 1988-11-29 |
Family
ID=24292012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000472089A Expired CA1245756A (en) | 1984-01-24 | 1985-01-15 | Transformer cooling structure with u-shaped cooling panels |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1245756A (en) |
| DE (1) | DE3501602A1 (en) |
| FR (1) | FR2558582A1 (en) |
| GB (1) | GB2153597A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3719028A1 (en) * | 1987-06-06 | 1988-12-22 | Asea Brown Boveri | Container seal for cooling boiling liquids |
| DE19812607A1 (en) * | 1998-03-23 | 1999-10-28 | Loos & Co Kg | Heat dissipative enclosure for fluid-cooled transformers |
| FI113447B (en) * | 1998-10-27 | 2004-04-15 | Abb Oy | Apparatus and method for cooling electronics component or module by liquid |
| DE29902340U1 (en) | 1999-02-10 | 1999-05-06 | Siemens AG, 80333 München | Protective device for a liquid-filled vessel |
| DE10010737C2 (en) * | 2000-03-04 | 2002-01-10 | Alstom Paris | Radiator for an electrical transformer |
| US10217556B2 (en) * | 2015-11-03 | 2019-02-26 | Carte International Inc. | Fault-tolerant power transformer design and method of fabrication |
| DE102016200742B3 (en) * | 2016-01-20 | 2017-06-22 | Siemens Aktiengesellschaft | A coolant containing housing of an electrical device |
| DE102017202067A1 (en) | 2017-02-09 | 2018-08-09 | Mahle International Gmbh | Induction charging device |
| CN111837463B (en) * | 2017-12-30 | 2023-08-04 | 日立能源瑞士股份公司 | System using sensor in transformer cooling circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2512404A1 (en) * | 1975-03-21 | 1976-10-07 | Schorch Gmbh | Circulation system for oil filled transformer - has horizontal slots through sides carry corrugated sheets forming vertical circulation channels |
| DE2749508A1 (en) * | 1977-11-04 | 1979-05-10 | Transformatoren Union Ag | Tank for liq. cooled transformers - has each cooling element in side walls closed against tank inner space by strips over entire height, to form channels |
| US4413674A (en) * | 1980-11-28 | 1983-11-08 | Westinghouse Electric Corp. | Transformer cooling structure |
-
1985
- 1985-01-08 GB GB08500450A patent/GB2153597A/en not_active Withdrawn
- 1985-01-15 CA CA000472089A patent/CA1245756A/en not_active Expired
- 1985-01-18 DE DE19853501602 patent/DE3501602A1/en not_active Withdrawn
- 1985-01-23 FR FR8500933A patent/FR2558582A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3501602A1 (en) | 1985-07-25 |
| GB8500450D0 (en) | 1985-02-13 |
| GB2153597A (en) | 1985-08-21 |
| FR2558582A1 (en) | 1985-07-26 |
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