EP2721620A1 - Winding arrangement having coil windings and a cooling duct system - Google Patents
Winding arrangement having coil windings and a cooling duct systemInfo
- Publication number
- EP2721620A1 EP2721620A1 EP12737781.0A EP12737781A EP2721620A1 EP 2721620 A1 EP2721620 A1 EP 2721620A1 EP 12737781 A EP12737781 A EP 12737781A EP 2721620 A1 EP2721620 A1 EP 2721620A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- channels
- winding arrangement
- winding
- carrier 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 title claims abstract description 105
- 238000001816 cooling Methods 0.000 title claims abstract description 88
- 239000002826 coolant Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
Definitions
- the invention relates to a winding arrangement with coil windings and a cooling duct system for an electrical apparatus, preferably for an oil-filled throttle or a transformer.
- the flow of the coolant is forced in such windings either by a pump (OD / OF cooling) or takes place automatically due to the thermally induced density change of the cooling liquid (ON cooling).
- the cooling liquid heated in the winding increases due to the lower ⁇ specifi c region weight relative to the surrounding liquid amount and is incoming from below cooling liquid ⁇ it sets.
- Such windings are preferably designed as coil or ticket ⁇ benwicklungen in which the cooling channels are arranged radially to ⁇ .
- the object is achieved by the features given in claim 1 ⁇ .
- the winding arrangement comprises at least one coil winding and a cooling channel system for receiving a coolant for cooling the coil winding.
- the coil windings are wound around an x-axis extending in an x-direction. Between turns of the coil winding cooling channels of the cooling channel system are arranged.
- the cooling channel ⁇ system is designed such that in a suitable Aus ⁇ direction of the winding arrangement in the earth's gravity field and filling the cooling duct system with the coolant caused by a current flow heating of the coil windings Konvetechnischsströmung the coolant through all the cooling channels of the cooling duct system causes.
- the term coil windings here not only coil windings in the literal sense, but also disc windings.
- a flow of the coolant is thus generated solely by its heating by the coil windings. This is achieved by the design of the cooling channel system. This has the advantage that no further Vorrich ⁇ lines to generate a flow of the coolant are required. In particular, no pumps for generating a coolant flow are required.
- the construction of the winding arrangement with respect to winding arrangements with cooled coil windings known from the prior art is made considerably simpler and less expensive.
- the operational safety of the winding assembly is increased, since the elimination of separate devices for generating a coolant flow also eliminates the risk of failure of such devices.
- the design of the cooling channel system for the flow through sämtli ⁇ cher cooling channels of the cooling channel system advantageously avoids local overheating of coil windings and thus reduces the risk of damage and loss of function of the winding assembly by such overheating.
- the cooling channels are arranged on a carrier body. Further, the cooling passage system at least one of the Trä ⁇ ger stressess arranged storage chamber inside, and each memory ⁇ chamber is connected via connecting ducts with cooling channels.
- the coolant from the storage ⁇ chambers supplied to the cooling channels or distributed to these and removed from them. This allows a coolant circulation within the cooling channel system, which causes a cooling of the coil windings according to the invention.
- each cooling channel is arranged on an outer side of the carrier body.
- the cooling of the coil windings can be advantageously improved by thermal contact of the cooling ducts with the surroundings of the winding arrangement.
- the cooling of the coil windings can be advantageously improved by thermal contact of the cooling ducts with the surroundings of the winding arrangement.
- the cooling ducts with the surroundings of the winding arrangement.
- the other hand might be arranged in simple and efficient manner to the storage chambers inside the carrier body around and connected to these.
- each storage chamber preferably at least one first connecting channel , which runs at least approximately in the z-direction, and at least one second connecting channel, which extends at least approximately in a y-direction orthogonal to the z-direction and the x-direction, exit ,
- This geometric arrangement of the outgoing from the storage chambers connecting channels makes it possible advantageously, resulting from heating the coil windings buoyancy to use within the coolant to flow through all the cooling channels of the cooling channel system by the winding arrangement is aligned in the gravitational field with the z-direction in the direction of gravity.
- all the second connection channels emanating from storage chambers preferably extend at least approximately in the y-direction. This allows a geometrically simple and convenient design of the connecting channels for fürströ ⁇ tion of the cooling channels with the coolant.
- connection channels connected to the cooling ⁇ channels.
- the third connection channels advantageously support the distribution of the coolant to the cooling channels, in particular in the x-direction.
- the cooling channel system comprises at least two storage chambers, and the SpeI ⁇ cherhuntn are arranged along the x-direction one behind the other.
- the flow of coolant through the cooling channel system is improved by the cooling channel system is advantageously segmented.
- the outgoing from adjacent storage chambers first and second connection channels are preferably arranged offset from one another.
- the flows from and to adjacent storage chambers complement one another in an advantageous manner in that cooling ducts, which are supplied less by one storage chamber, are better supplied by an adjacent storage chamber.
- the carrier body is preferably cylindrical in shape with a cylinder axis extending in the x-direction. This advantageously allows a geometrically simple construction of a winding arrangement according to the invention. Furthermore, the carrier body preferably comprises a plurality of hollow cylinder segments whose cavities each form a storage chamber and are separated from one another by separating disks, wherein the first and second connecting channels extending from the storage chambers are openings in the hollow cylinder walls of the hollow cylinder segments. In this way, in simp ⁇ cher, the above-described particularly preferred Ausges ⁇ taltung the winding arrangement can be realized with a plurality of serially-arranged storage chambers.
- an inner body is arranged within the carrier body and the storage chambers are separated by separating disks between the carrier body and the inner body.
- This embodiment also realizes the particularly preferred embodiment of the winding arrangement with a plurality of storage chambers arranged one behind the other.
- This refinement can be used particularly advantageously, for example as a winding arrangement for transformers, in particular vehicle transformers.
- a carrier body or inner body for example, electrical barrier arrangements for high voltage insulation are. If high-voltage only a high-voltage barrier is required, as an inner body, for example, advantageously a transformer core can be used.
- the inner body is for example cylindrical. This is particularly advantageous in connection with a just ⁇ if cylindrical shaped carrier body, since then uniformly shaped storage chambers arise in the spaces between the two bodies.
- a coil assembly is thus provided ⁇ propose, in the different aligned by combining channels (coolant channels, connecting channels) and otherdemit ⁇ telschreib (storage chambers) each channels with strong Strö ⁇ mung drive (largely vertical channels) and channels with un ⁇ favorable coolant drive (largely horizontal channels) be summarized to a flow channel.
- FIG. 1 shows a perspective view of a winding arrangement with a cylindrical carrier body
- FIG. 2 shows a perspective partial view of a winding arrangement with a cylindrical carrier body
- Carrier body with axial bars Carrier body with axial bars
- FIG. 4 is a perspective view of a cutting disc and its attachment for dividing a cylindrical cavity in two storage chambers
- 5 shows a longitudinal section through a winding arrangement with a cylindrical carrier body and three Speieherhuntn
- 6 shows a cross section through a winding arrangement with a cylindrical carrier body in one
- Cutting plane through a first storage chamber, 7 shows a cross section through a winding arrangement with a cylindrical carrier body in one
- FIG 8 is a plan view of a substituted material for a first storage chamber.
- FIG. 9 shows a plan view of a cylindrical carrier body with three storage chambers unwound in one plane
- FIG. 10 is a plan view of a unwound in a plane ⁇ th cylindrical support body with four storage chambers
- FIG. 11 shows a cross section through a winding arrangement with a cylindrical carrier body without third connection channels in a sectional plane through a first storage chamber
- FIG. 13 shows a cross section through a winding arrangement with a cylindrical carrier body and an inner body in a sectional plane through a first storage chamber
- FIG. 14 shows a cross section through a winding arrangement with a cylindrical carrier body and an inner body in a sectional plane through a second storage chamber.
- Figure 1 and Figure 2 show a perspective view and partial representation of a first embodiment of a winding arrangement A according to the invention.
- the winding arrangement A comprises a coil winding 1, a hollow cylindrical derförmigen carrier body 2 and a cooling channel system, with a cooling oil as a coolant for cooling the coil windings 1 is filled.
- the coil winding 1 extends helically about a longitudinal axis (Zy ⁇ linderachse) of the support body 2 on the outside thereof.
- the cooling duct system includes cooling channels 40, each interim ⁇ rule adjacent turns of the coil winding are located 1, a storage chamber 20 which is formed by the cavity inside the carrier body 2, and tantskanä ⁇ le 51, 52, 53, via which the storing chamber 20 is connected to thedeka ⁇ channels 40.
- First connecting channels 51 and second connecting channels 52 are openings in the hollow cylinder wall of the carrier body 2.
- the first connecting channels 51 extend at least approximately in a z-direction which is orthogonal to an x-direction which is defined by the longitudinal axis (cylinder axis) of the carrier body 2 becomes.
- the second connection ⁇ channels 52 extend at least approximately in a y-direction, which is orthogonal to the x-direction and the z-direction.
- the first and second connecting channels 51, 52 lead from the storage chamber 20 through the hollow cylinder wall of the support body 2 to the third connecting channels 53 duri ⁇ fen on the outer surface of the support body 2 in the x direction.
- connection channels 53 are mutually abutting on the outer surface of the carrier body 2, in x-
- the cooling channels 40 connect respectively to a third connecting channel 53 and are spaced through it from the outside ⁇ surface of the carrier body. 2 They run in a yz plane in each case radially from a third connection ⁇ channel 53 to the outside. In the yz plane, the cooling channels 40 are separated from each other by separating strips 4, each resting on an axial strip 3 and extending radially outwardly therefrom between adjacent turns of the coil winding 1.
- Figure 3 shows a perspective view of the carrier ⁇ body 2 illustrated in Figures 1 and 2 with A winding arrangement is arranged on the carrier body 2 Axialleis- th. 3
- the winding arrangement A shown in FIGS. 1 to 3 is intended to be oriented in the gravitational force in the gravitational field with the z-direction.
- Channel system thedeka- is designed so that in such From ⁇ direction heating of the coil winding 1, which is generated by a current flow through the coil 1, a con- vekomsströmung of the cooling oil through all the cooling channels 40 of the cooling channel system causes.
- the convection flow is generated by a buoyancy, which is caused by the heating of the coil winding 1 in the cooling oil.
- the arrangement in particular of the first and second connecting channels 51, 52 and their approximate course in the z- or y-direction thereby ensure that all cooling channels 40 are included in the flow of the cooling oil.
- the second communication passages 52 are preferably not made to run exactly in the y-direction, but slightly different, so that they each allow an upward component of the flow.
- An embodiment of the shown in the figures 1 to 3 the first embodiment provides, instead of a coil winding 1 ⁇ a plurality of such coil windings 1 before, the Windings, for example, offset from each other or intertwined.
- inventive winding arrangements A described below with reference to FIGS. 4 to 14.
- These also have approximately in the z- or y-direction extending first and second connec ⁇ tion channels 51, 52, which allow a convection flow through all the cooling channels 40 when the coil windings 1 are traversed by electric current and the respective winding arrangement A in the earth's gravity field the z-direction is oriented in the direction of gravity.
- the winding arrangements A of these embodiments also each have a cylindrical carrier body 2.
- a plurality of storage chambers 21, 22, 23, 24 along the longitudinal axis (cylinder axis) of the carrier body 2 are arranged one behind the other in the interior of the carrier body 2 for further improving the convection flow of the cooling oil.
- the longitudinal axis of the carrier body 2 defines each ⁇ wells in turn, an x-direction.
- the y and z directions refer to the x-direction and mutually orthogonal directions.
- Figure 4 shows a perspective view of a cutting wheel 5 for dividing a cylindrical cavity within a cylindrical support body 2, not shown here in two storage chambers 21, 22.
- the separating disk 5 is arranged by means of a arranged along the longitudinal axis of the Sukör ⁇ pers 2 mounting rod 6 at a carrying device 7 of the support body 2 attached.
- the fastening ⁇ rod 6 can be omitted when the blade 5 is connected at its Au ⁇ . . 2
- FIG. 5 shows a longitudinal section in an xz plane through a second exemplary embodiment of a winding arrangement A.
- Winding arrangement A has a cylindrical carrier body 2 with three storage chambers 21, 22, 23, which are each formed as a cavity of a hollow cylinder segment within the carrier body 2. Adjacent storage chambers 21, 22, 23 are each separated by a cutting disc 5 from each other.
- second connecting channels 52 which are each formed as an opening in the hollow cylinder wall of the respec ⁇ gene hollow cylinder segment.
- first and second connection channels 51, 52 are each connected to a third connection channel 53.
- ver ⁇ through the third connecting passages 53 in the x-direction on the outer surface of the support body 2 and are provided with outwardly subsequent cooling channels 40 are connected, in which SPU lenwicklept are arranged.
- the first connection channels 51 and the second connection ⁇ channels 52 adjacent storage chambers 21, 22, 23 are each offset from each other. As a result, the convection flow of the cooling oil is advantageously further improved.
- FIGS. 6 and 7 each show a cross section in a yz plane through the winding arrangement A shown in FIG. 5, the sectional plane in FIG. 6 passing through a first storage chamber 21 and the sectional plane in FIG. 7 being adjacent through one of the first storage chamber 21 second storage chamber 22 extends. Shown are also the directions of the convection flow of the cooling oil through the first and second connection channels 51, 52 which are arranged offset in the two storage chambers 21, 22 to each other.
- FIGS. 8 to 10 each show a plan view of a cut-and-cut along an x-direction xy plane unwound cylindrical support body 2 of embodiments of winding arrangements A, which differ by the number of storage chambers 21, 22, 23, 24 and the number and / or distribution of first and second connection channels 51, 52, but otherwise correspond to the embodiment shown in Figures 5 to 7.
- the position of the separating disks 5 is shown, which separate the storage chambers 21, 22, 23, 24 from one another.
- the first and second connection channels 51, 52 of adjacent storage chambers 21, 22, 23, 24 are arranged offset from one another.
- FIGS. 11 and 12 each show a cross section in a yz plane through a winding arrangement A according to a further exemplary embodiment.
- the winding arrangement A has no third connecting channels 53 up but the first and second connecting channels 51, 52 connected directly to the cooling channels 40 .
- the winding arrangement A is formed analogously to the embodiments illustrated in FIGS. 5 to 10.
- it has a plurality of storage chambers 21, 22, 23, 24, wherein the first and second connection channels 51, 52 emanating from adjacent storage chambers 21, 22, 23, 24 are arranged offset relative to one another.
- Figure 11 shows a cross-section whose sectional plane passing through a first storage chamber ⁇ 21st
- FIG. 12 shows a cross section whose sectional plane extends through a second storage chamber 22 adjacent to the first storage chamber 21.
- Figures 13 and 14 show respectively a cross section in egg ⁇ ner yz-plane by a winding arrangement A according to a soft direct embodiment. Like the embodiment illustrated in Figures 11 and 12 also includes exporting this example approximately ⁇ no third connecting channels 53rd
- the Un ⁇ ter Kunststoff to that shown in Figures 11 and 12 off guiding example consists in the formation of the storage chambers 21, 22, 23, 24.
- a cylindrical inner body 8 is arranged, the cylinder axis coincides with the cylinder axis of the support body 2.
- the storage chambers 21, 22, 23, 24 are formed in this embodiment of spaces between the support body 2 and the inner body 8, which are separated from each other by annular cutting discs 5.
- FIG. 14 shows a cross section whose sectional plane extends through a second storage chamber 22 adjacent to the first storage chamber 21.
- suitable carrier bodies 2 and / or inner bodies 8 are, for example, electrical barrier arrangements for high-voltage insulation.
- This exemplary embodiment can be used to particular advantage as a winding arrangement for vehicle ⁇ transformers. If high-voltage technically a high voltage barrier is required, nen redesign 8 of the core of a transport formators be used as an in ⁇ example advantageous.
- an outer area around the cooling channels 40 and coil windings 1 can likewise be designed as an area of the cooling channel system that can be filled with coolant and connected to the cooling channels 40.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12737781T PL2721620T3 (en) | 2011-07-22 | 2012-07-17 | Winding arrangement with coil windings and system of cooling channels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011079648A DE102011079648A1 (en) | 2011-07-22 | 2011-07-22 | Winding arrangement with coil windings and a cooling channel system |
PCT/EP2012/063992 WO2013014031A1 (en) | 2011-07-22 | 2012-07-17 | Winding arrangement having coil windings and a cooling duct system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2721620A1 true EP2721620A1 (en) | 2014-04-23 |
EP2721620B1 EP2721620B1 (en) | 2018-01-31 |
Family
ID=46548440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12737781.0A Active EP2721620B1 (en) | 2011-07-22 | 2012-07-17 | Winding arrangement with coil windings and system of cooling channels |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2721620B1 (en) |
DE (1) | DE102011079648A1 (en) |
PL (1) | PL2721620T3 (en) |
WO (1) | WO2013014031A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112022005763A2 (en) * | 2019-09-27 | 2022-06-21 | Univ Marquette | Stator winding with integrated cooling |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US694673A (en) * | 1901-08-17 | 1902-03-04 | Ferdinand Schwedtmann | Transformer. |
US834160A (en) * | 1905-10-19 | 1906-10-23 | Bullock Electric Mfg Co | Transformer. |
US873166A (en) * | 1906-01-15 | 1907-12-10 | Bullock Electric Mfg Co | Transformer. |
CH297561A (en) * | 1952-02-06 | 1954-03-31 | Oerlikon Maschf | Liquid-cooled transformer. |
DE1030449B (en) * | 1957-04-27 | 1958-05-22 | Siemens Ag | Choke coil, especially current-limiting choke coil for high-voltage systems |
GB937161A (en) * | 1958-11-11 | 1963-09-18 | English Electric Co Ltd | Improvements in and relating to the liquid cooling of apparatus |
DE1138156B (en) * | 1960-11-11 | 1962-10-18 | Licentia Gmbh | Liquid-cooled, coreless reactor with disc winding |
US3195085A (en) * | 1963-05-29 | 1965-07-13 | Westinghouse Electric Corp | Cooling ducts for wound coils |
FR1407259A (en) * | 1964-06-19 | 1965-07-30 | Commissariat Energie Atomique | Large magnetic field coil |
CH456763A (en) * | 1966-02-17 | 1968-07-31 | Vuori Martti | Device on an oil-cooled transformer to divert the oil flowing through it for a flow through the spaces between the individual winding coils |
CS149308B1 (en) * | 1969-12-22 | 1973-07-05 | ||
US4000482A (en) * | 1974-08-26 | 1976-12-28 | General Electric Company | Transformer with improved natural circulation for cooling disc coils |
US4028653A (en) * | 1976-04-01 | 1977-06-07 | Asea Aktiebolag | Electrical equipment having radial cooling channels with means for guiding cooling fluid through the channels |
US4245206A (en) * | 1977-03-26 | 1981-01-13 | Hitachi, Ltd. | Winding structure for static electrical induction apparatus |
US4307364A (en) * | 1980-05-16 | 1981-12-22 | Westinghouse Electric Corp. | Electrical reactor with foil windings |
DE4225677A1 (en) * | 1992-08-04 | 1994-03-10 | Abb Patent Gmbh | Choke coil for a converter |
US5296829A (en) * | 1992-11-24 | 1994-03-22 | Electric Power Research Institute, Inc. | Core-form transformer with liquid coolant flow diversion bands |
JPH0997719A (en) * | 1995-09-28 | 1997-04-08 | Makoto Yamamoto | Transformer structure |
JP2002075749A (en) * | 2000-08-29 | 2002-03-15 | Mitsubishi Electric Corp | Winding device for induction electrical equipment |
DE10337153A1 (en) * | 2003-08-13 | 2005-03-10 | Alstom | Transformer or choke coil winding method in which a number of windings of a conductor are wound radially on top of each other with spacers fixed directly to the windings at circumferential intervals |
-
2011
- 2011-07-22 DE DE102011079648A patent/DE102011079648A1/en not_active Withdrawn
-
2012
- 2012-07-17 EP EP12737781.0A patent/EP2721620B1/en active Active
- 2012-07-17 WO PCT/EP2012/063992 patent/WO2013014031A1/en active Application Filing
- 2012-07-17 PL PL12737781T patent/PL2721620T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2013014031A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL2721620T3 (en) | 2018-07-31 |
DE102011079648A1 (en) | 2013-01-24 |
EP2721620B1 (en) | 2018-01-31 |
WO2013014031A1 (en) | 2013-01-31 |
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