WO2005015762A2 - A glass fiber net tape continuously transposed cables, method for manufacturing and using the same - Google Patents
A glass fiber net tape continuously transposed cables, method for manufacturing and using the same Download PDFInfo
- Publication number
- WO2005015762A2 WO2005015762A2 PCT/EP2004/009623 EP2004009623W WO2005015762A2 WO 2005015762 A2 WO2005015762 A2 WO 2005015762A2 EP 2004009623 W EP2004009623 W EP 2004009623W WO 2005015762 A2 WO2005015762 A2 WO 2005015762A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ctc
- glass fiber
- fiber net
- net tape
- enameled wires
- Prior art date
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
- H01F27/2823—Wires
- H01F2027/2838—Wires using transposed wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
- H02K3/14—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors
Abstract
A continuously transposed cable (CTC) for a transformer is disclosed. The outer surface of the CTC is wrapped by glass fiber net tape (5). The CTC comprises a first row of enameled wires (1) and a second row of enameled wires (2), each row of which includes multiple enameled wires (3). The first row of enameled wires pass through the second row of enameled wires via a bend (4) and the second row of enameled wires pass through the first row of enameled wires via another bend (4), so that transposition between the first row of enameled wires and the second row of enameled wires can be carried out. In the present invention, the glass net tape is used to wrap the CTC, so as to maintain its structure and performance all the time when it is used to thereby avoid hydrolyzation.
Description
A GLASS FIBER NET TAPE CONTINUOUSLY TRANSPOSED CABLES, METHOD FOR MANUFACTURING AND USING THE SAME
FIELD OF THE INVENTION
This invention relates to a continuously transposed cable (CTC), method for manufacturing and using the CTC, which is primarily but not limited to be used in large-scale transformers or the other electrical apparatus such as motor, and more particularly, to a glass fiber net tape continuously transposed cable, the method for manufacturing and using it.
DESCRIPTION OF THE RELATED ART
A conventional CTC is wrapped by an insulation paper in the outmost layer, which influences heat exchange and increases size of windings of the transfonner. The European Patent EP 0746 861 Bl discloses a structure of wrapping CTC by using a woven strip dipping with epoxy resin. The warp and weft of the woven strips are formed with polyester or mixed glass silk/polyester. In such a way, heat exchange problem is partially solved. However, when the CTC is wrapped by using the woven strip dipping with epoxy resin, there are the following problems: polyester, as an ingredient of the woven strip, will hydrolyzed, i.e. when used in transformer oil, especially at working temperature of 80-100 C, the polyester material will dissolve gradually and even disappear thoroughly. Therefore, this polyester fabric mesh strip, used as binding strip, has problems in terms of long-term use.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a CTC mainly used in large-scale transformers and wrapped by glass fiber net tape, so that its construction and performance can be maintained all the time when it is used so as to avoid hydrolyzation.
Another object of the present invention is to provide a method for manufacturing and using the CTC used in large-scale transformers and having the above mentioned characteristics. In order to achieve the above objects, the present invention provides a CTC for transformer, wherein an outer surface of the CTC is wrapped by a glass fiber net tape.
Preferably, this CTC includes a first row of enameled wires and a second row of enameled wires, each row of which includes multiple enameled wires. The first
row of enameled wires pass through the second row of enameled wires via a bend. The second row of enameled wires pass through the first row of enameled wires via another bend. These two rows of wires remain parallel all the time, so that transposition between the first row of enameled wires and the second row of enameled wires can be carried out.
Preferably, the glass fiber net tape is processed by immersing into a self-adhesive epoxy resin to enable the glass fiber net tape to be bonded to the CTC. Preferably, the glass fiber net tape is wrapped by an insulation paper. More preferably, continuous threads are added between the glass fiber net tape and the insulation paper.
Preferably, the first and second rows of enameled wires are enlaced by the glass fiber net tape at a certain angle.
Preferably, the glass fiber net tape includes multiple warp glass fiber threads and multiple weft glass fiber threads. The warp glass fiber threads wind around weft glass fiber threads and they are braided and twisted by each other.
Preferably, the above mentioned CTC winds around a shaft.
The present invention further provides a method for manufacturing a glass fiber net tape CTC, comprising the steps of: preparing enameled wires; transposing said enameled wires together to form CTC; and winding obliquely glass fiber net tape on the periphery of the CTC.
Preferably, the aforesaid method further comprises the following step: wrapping insulation paper and threads on the outer layer of the glass fiber net tape CTC.
Preferably, the aforesaid method further comprises the following step: winding contractedly the glass fiber net tape CTC on the shaft.
The present invention further provides a method for using the glass fiber net tape CTC, comprising the steps of: releasing gradually the glass fiber net tape CTC wound around the shaft; bending the cable and removing the insulation paper and threads on the outer layer of the glass fiber net tape CTC; helically winding to form windings; heating to integrate the glass fiber net tape with the CTC.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view schematically showing the structure of the CTC in
the present invention;
Figs. 2A and 2B show a preferable structure of the glass fiber net tape for the CTC; and
Fig. 3 is an analysis view schematically showing the force when the glass fiber net tape is wound, wherein Fig. 3A is an analysis view schematically showing the force when it is wound straightly and Fig. 3B is an analysis view schematically showing the force when it is wound obliquely.
DESCRIPTION OF THE PREFERRED EMBODEMENTS
The invention will be described in combination of some preferable embodiments. It should be understood that these preferable embodiments are not limitation to the invention.
With reference to Fig. 1, it is a perspective view schematically showing the structure of the CTC in the present invention. In one preferable embodiment of the present invention, a CTC for transformer is provided, which comprises a first row of enameled wires 1 and a second row of enameled wires 2, each row of which includes multiple enameled wires 3. The first row of enameled wires 1 pass through the second row of enameled wires via a bend 4. The second row of enameled wires 2 pass through the first row of enameled wires 1 via another bend 4. Thus, transposition between the first row of enameled wires 1 and the second row of enameled wires 2 can be carried out. An outer surface of the CTC consisting of the first row of enameled wires 1 and the second row of enameled wires 2 is wrapped by a glass fiber net tape 5.
The glass fiber net tape 5 can be immersed into epoxy resin, so that the glass fiber net tape is capable to be bonded to the CTC.
The glass fiber net tape is wrapped by an insulation paper. Preferably, continuous threads are added between the glass fiber net tape and the insulation paper. The periphery of the CTC is wrapped obliquely by the prepared glass fiber net tape 5 at a certain angle to cover the surface of the CTC, of which structure is shown in Fig. 1.
With reference to Figs. 2 A and 2B, a preferable structure of the glass fiber net tape 5 is shown.
In consideration of various using requirements of the glass fiber net tape CTC and performances of raw material of glass fiber etc., the present invention uses, but is not limited to, the glass fiber net tape having the following properties as wrapping
material:
Glass Fiber: No-alkali electronic degree-glass type Mesh Size: 3mmx3mm Base weight of the glass fiber not processed: >60g/m Tensile Strength: Waip: >800N/30mm width Weft: >1000N/30mm width Width of the net tape: 30mm (adjustable depending on the applying conditions)
As shown in Figs. 2 A and 2B, warp glass fibers 51a-51d, for example, include three or four fibers, in which warp glass fibers 51a and 51b are twisted around weft glass fibers 52a-52d, warp glass fiber 51c, or warp glass fiber 51c and 5 Id, as intensifying fiber, reinforces a structure constituted by warp glass fibers 51a, 51b and weft glass fibers 52a, 52b, and warp glass fibers 51a, 51b and weft glass fibers 52c, 52d. Thus, the whole glass fiber net tape gathers to be a tight integrity so as to ensure mechanical intensity and stability of the structure. According to the glass fiber net tape having the aforesaid preferable structure, the wrapping stability of the glass fiber net tape is improved in the present invention, so as to ensure that the whole glass fiber net tape remains undistorted when the glass fiber net tape CTC is wound to form a winding, so as to improve mechanical intensity of the glass fiber net tape CTC.
The glass fiber net tape, having the aforesaid structure, is wrapped full-automatically and obliquely. As shown in Fig. 1 , the surface of the whole CTC can be covered full-automatically and continuously in such a wrapping way, so as to ensure a consistency of the glass fiber net tape CTC and reduce distortion of the glass fiber net tape owing to bending of the CTC, when the winding is formed.
With reference to Fig. 3, it is an analysis view schematically showing the force when the glass fiber net tape is wound, wherein Fig. 3A is an analysis view schematically showing the force when it is wound straightly and Fig. 3 B is an analysis view schematically showing the force when it is wound obliquely. Seen from the simple force analysis, the net tape, when it is wound straightly, is forced only in warp direction and supposed to be Al, there is no force in weft direction. If it is wound obliquely the warp force is A4 and weft force is A3, which bear Al together. Therefore, we can conclude that oblique winding enables uniform force and is superior to straight winding.
The new type of CTC is mainly used in large-scale transformers having a power of greater than 220kVA so as to enhance heat exchange between the CTC and transformer oil, reduce the size of winding, and improve use efficiency of CTC
material.
According to the wrapping glass fiber net tape of the present invention, contact of the CTC enameled conductor with transformer oil can be in the greatest extent so as to maximize heat exchange.
A conventional CTC is wrapped by an insulation paper, which influences heat exchange and increases size of windings of the transformer. The structural improvement of the present invention enables reduction of sizes of the winding and the whole transformer and cost economy.
The glass fiber net tape used in the present invention, compared with the currently used polyester mesh tape, satisfies the existing characteristic and further overcomes innate defects of the polyester material. The glass fiber net tape is chemically stable and unreactive, mechanically stable and remains unchanged for a long time, fracture resistant, and has a good binding performance.
The glass fiber net tape in the present invention is wound obliquely, so that winding speed is increased and extensively automatic production is improved. Also, oblique winding, compared with straight winding, has a good damage resistance due to incontinuity. Thus, a transformer winding as small as possible is formed according to the customers' requirement.
The glass fiber net tape can be dipped with self-adhesive epoxy resin, which on the one hand improves mechanical performance and on the other hand further enhances mechanical intensity of the transformer winding, because the net tape is bonded to the CTC conductor after the transformer winding is heated.
In order to prevent foreign matter from damaging the glass fiber net tape CTC, another insulation paper can be additionally wrapped. Continuous threads are added between the glass fiber net tape and the insulation paper. When forming a transformer winding, the continuous thread is dragged to cut off the insulation paper in the outermost layer so as to make it take off automatically. The insulation paper not only has a protection function but also has no influence to the use of the glass fiber net tape CTC.
The glass fiber net tape CTC is manufactured as follows:
Preparing enameled wires; transposing said enameled wires together to form CTC; and winding obliquely the glass fiber net tape on the periphery of the CTC; wrapping insulation paper and threads on the outer layer of the glass fiber net tape CTC; winding tightly the glass fiber net tape CTC on a shaft.
The method for using the glass fiber net tape CTC are as follows: releasing
gradually the glass fiber net tape CTC wound around a shaft; bending the cable and removing the insulation paper and threads on the outer layer of the glass fiber net tape CTC; helically winding to form windings; heating to integrate the glass fiber net tape with the CTC.
The present invention is described according to some preferable embodiments above. However, the present invention is not limited to the embodiments. Those skilled in the art can make various alterations and changes according to the spirit of the invention. The present invention includes various equivalent embodiments.
Claims
Claims 1. A CTC for a transformer, wherein the outer surface of the CTC is wrapped with a glass fiber net tape.
2. The CTC for the transformer according to claim 1, wherein the CTC comprises a first row of enameled wires and a second row of enameled wires, each row of which includes multiple enameled wires; the first row of enameled wires pass through the second row of enameled wires via a bend and the second row of enameled wires pass through the first row of enameled wires via another bend, so that transposition between the first row of enameled wires and the second row of enameled wires can be realized.
3. The CTC for the transformer according to claim 1 or 2, wherein the glass fiber net tape is dipped with an epoxy resin, so that the glass fiber net tape is bonded to the CTC.
4. The CTC for the transformer according to claim 1 or 2, wherein the glass fiber net tape is wrapped by an insulation paper.
5. The CTC for the transformer according to claim 4, wherein continuous threads are added between the glass fiber net tape and the insulation paper.
6. The CTC for the transformer according to claim 1 or 2, wherein the first and second rows of enameled wires are enlaced by the glass fiber net tape at a certain angle.
7. The CTC for the transformer according to claim 1 or 2, wherein the glass fiber net tape includes multiple warp glass fiber threads and multiple weft glass fiber threads; the waip glass fiber threads wind around weft glass fiber threads and they are braided and twisted by each other.
8. The CTC for the transformer according to claim 1 or 2, wherein the CTC winds around a shaft.
9. A method for manufacturing a glass fiber net tape CTC, comprising the steps of: preparing enameled wires; transposing said enameled wires together to form CTC; and winding obliquely glass fiber net tape on the periphery of the CTC.
10. The method according to claim 9, further comprising the step of: wrapping insulation paper and threads on an outer layer of the glass fiber net tape CTC.
11. The method according to claim 9 or 10, further comprising the step of: winding the glass fiber net tape CTC on a shaft.
12. A method for using a glass fiber net tape CTC, comprising the steps of: releasing gradually the glass fiber net tape CTC wound around a shaft; bending the cable and removing the insulation paper and threads on an outer layer of the glass fiber net tape CTC; helically winding to form windings; heating to integrate the glass fiber net tape with the CTC.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03153347.7 | 2003-08-11 | ||
| CN 03153347 CN1581380A (en) | 2003-08-11 | 2003-08-11 | Glass fiber silk screen tape commutating conducting wire, and its manufacture and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2005015762A2 true WO2005015762A2 (en) | 2005-02-17 |
| WO2005015762A3 WO2005015762A3 (en) | 2005-06-23 |
Family
ID=34121287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2004/009623 WO2005015762A2 (en) | 2003-08-11 | 2004-08-11 | A glass fiber net tape continuously transposed cables, method for manufacturing and using the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1581380A (en) |
| WO (1) | WO2005015762A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019121280A1 (en) * | 2017-12-20 | 2019-06-27 | Siemens Aktiengesellschaft | Insulation of sub-conductors of a dynamoelectric machine |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552136B (en) * | 2008-12-16 | 2011-04-06 | 无锡统力电工有限公司 | Magnetic damping tension precision adjustment device |
| CN101964221B (en) * | 2009-07-24 | 2011-12-07 | 天津经纬电材股份有限公司 | Method for manufacturing corona resistant transposition winding wires |
| CN103166390B (en) * | 2012-03-28 | 2016-06-22 | 哈尔滨理工大学 | A kind of strand transposition method in stator bar of large-scale hydraulic generator |
| CN104361926A (en) * | 2014-11-26 | 2015-02-18 | 天津经纬正能电气设备有限公司 | Glass fiber mixed band transposed conductor with impregnating resin as insulator |
| CN104795138A (en) * | 2015-05-13 | 2015-07-22 | 江苏句容联合铜材有限公司 | Filament-coated transposition lead |
| CN104852535B (en) * | 2015-05-22 | 2017-10-13 | 哈尔滨理工大学 | A kind of novel alternating-current generator positioning line rod transposition method |
| CN105048679B (en) * | 2015-09-15 | 2018-01-16 | 哈尔滨理工大学 | A kind of large ac machines are local to mix transposition stator bar and mixing interchanging method with overall |
| CN106005740A (en) * | 2016-06-30 | 2016-10-12 | 苏州市盛百威包装设备有限公司 | Package of single transposition winding |
| CN106898420A (en) * | 2017-04-26 | 2017-06-27 | 南通明光电线有限公司 | Type transformer winding line is worn in resistance |
| CN106950481B (en) * | 2017-05-04 | 2023-04-25 | 广东电网有限责任公司电力科学研究院 | Transformer turn-to-turn insulation transient impact accumulation effect test system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH312388A (en) * | 1951-10-30 | 1955-12-31 | Gen Electric | Flat electrical insulating material. |
| EP0133220A2 (en) * | 1983-07-22 | 1985-02-20 | Kabel- und Lackdrahtfabriken GmbH | Electric conductor |
| WO1995023420A1 (en) * | 1994-02-25 | 1995-08-31 | Asta Elektrodraht Gmbh | Twisted-conductor bundle for the windings of electric machines and equipment |
| WO1995030991A1 (en) * | 1994-05-10 | 1995-11-16 | Asta Elektrodraht Gmbh | Multiple parallel conductor for windings of electric motors and devices |
| US5962945A (en) * | 1997-04-17 | 1999-10-05 | Alcatel | Multiple parallel conductor |
| EP1079500A1 (en) * | 1999-08-20 | 2001-02-28 | Alcatel | Insulation of a multiple parallel conductor for oil cooled windings |
-
2003
- 2003-08-11 CN CN 03153347 patent/CN1581380A/en active Pending
-
2004
- 2004-08-11 WO PCT/EP2004/009623 patent/WO2005015762A2/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH312388A (en) * | 1951-10-30 | 1955-12-31 | Gen Electric | Flat electrical insulating material. |
| EP0133220A2 (en) * | 1983-07-22 | 1985-02-20 | Kabel- und Lackdrahtfabriken GmbH | Electric conductor |
| WO1995023420A1 (en) * | 1994-02-25 | 1995-08-31 | Asta Elektrodraht Gmbh | Twisted-conductor bundle for the windings of electric machines and equipment |
| WO1995030991A1 (en) * | 1994-05-10 | 1995-11-16 | Asta Elektrodraht Gmbh | Multiple parallel conductor for windings of electric motors and devices |
| US5962945A (en) * | 1997-04-17 | 1999-10-05 | Alcatel | Multiple parallel conductor |
| EP1079500A1 (en) * | 1999-08-20 | 2001-02-28 | Alcatel | Insulation of a multiple parallel conductor for oil cooled windings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019121280A1 (en) * | 2017-12-20 | 2019-06-27 | Siemens Aktiengesellschaft | Insulation of sub-conductors of a dynamoelectric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005015762A3 (en) | 2005-06-23 |
| CN1581380A (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2005015762A2 (en) | A glass fiber net tape continuously transposed cables, method for manufacturing and using the same | |
| DK2180579T3 (en) | Coils with many windings for generators | |
| CN103714936B (en) | A kind of high temperature superconductor coil and technique for coiling thereof | |
| CN110444391A (en) | A kind of winding method of integrated-type magnetic elements winding | |
| JP2005527955A (en) | Method for producing perfect dislocation high Tc composite superconductor and conductor produced by the method | |
| JP2009518790A (en) | Wire interconnection method | |
| US4658090A (en) | Ribbon cable, a transposed ribbon cable, and a method and apparatus for manufacturing transposed ribbon cable | |
| US10381132B2 (en) | Self-supporting cable | |
| CN1196561A (en) | Multiple parallel conductor | |
| CN209343798U (en) | A kind of medium-high frequency electrically with twisting formula litz wire, reactor and producing device again | |
| US6657122B1 (en) | Multiple parallel conductor for windings of electrical devices and machines | |
| JP2007227035A (en) | Litz wire coil | |
| CN109448902A (en) | It is tethered at antenna hawser and preparation method thereof | |
| CN210927245U (en) | Insulation structure of 10kV sealed motor | |
| CN209880245U (en) | Crosslinked polyethylene insulated power cable | |
| JP2004030967A (en) | Superconducting transposed segment conductor and its manufacturing method | |
| KR101118748B1 (en) | method for manufacturing round wire using superconducting coated conductors and superconducting cables thereof | |
| CN102985984B (en) | Manufacture method and the electric conductor of electricity winding | |
| CN200944341Y (en) | Multi-conbination parallel wires with protection insulator | |
| EP1724793A2 (en) | Method and arrangement for reactor manufacturing, and a reactor | |
| JP2015073412A (en) | Coil of electric device and coil manufacturing method of electric device | |
| CN208271637U (en) | New-energy automobile exchange square cable beam | |
| US20210383947A1 (en) | Winding wire having insulation layer wrapping around multiple wires | |
| CN219123006U (en) | Paper wrapping winding wire for offshore wind power transformer | |
| CN110132721B (en) | Stretching device and method for optical fiber composite low-voltage cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| 122 | Ep: pct application non-entry in european phase |