CN113539674A - Foil type coil winding die with air passage - Google Patents
Foil type coil winding die with air passage Download PDFInfo
- Publication number
- CN113539674A CN113539674A CN202110784866.6A CN202110784866A CN113539674A CN 113539674 A CN113539674 A CN 113539674A CN 202110784866 A CN202110784866 A CN 202110784866A CN 113539674 A CN113539674 A CN 113539674A
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- CN
- China
- Prior art keywords
- die
- air passage
- winding
- rod
- passage rod
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 title claims abstract description 54
- 239000011888 foil Substances 0.000 title claims abstract description 27
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses a foil type coil winding die with an air passage, and belongs to the technical field of dry type transformer coils. The device comprises an inner die, an air passage rod positioning plate, an air passage rod, an outer die, an end template and an inner die aligning die; the inner die is cylindrical, annular air passage rod positioning plates are respectively fixed at two ends of the inner die, mounting holes for fixing air passage rods are formed in the end faces of the air passage rod positioning plates, a plurality of air passage rods are uniformly fixed between the mounting holes of the two air passage rod positioning plates, and the air passage rods form an air passage rod layer on the outer side of the inner die; and a lower winding is wound between the air passage rod layer and the inner die, and an upper winding is wound outside the air passage rod layer. The air channel rod positioning plate is arranged on the outer side of the inner die, the air channel rod is inserted after the lower-layer winding is wound, and then the upper-layer winding is wound, so that the heat dissipation air channel can be reserved more conveniently when the coil is wound; the foil coil winding die is simple in structure, convenient to wind and mold, and beneficial to improving the production efficiency.
Description
Technical Field
The invention relates to a foil type coil winding die with an air passage, and belongs to the technical field of dry type transformer coils.
Background
The dry type transformer can generate a large amount of heat during operation, so that in order to increase the heat dissipation area on a large-capacity transformer, an air channel needs to be arranged on the high-voltage coil and the low-voltage coil so as to reduce the temperature rise of the transformer coil. The high-voltage coil of the foil-wound resin cast dry type transformer is characterized in that the winding material is a copper strip (or an aluminum strip), the existing coil winding process and equipment cannot place an air passage in the foil type coil, and when the capacity of the transformer is large, the heat dissipation requirement cannot be met. Therefore, the foil coil winding die with the air passage is designed, and the problem that the air passage is arranged in the foil coil can be solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a take foil coil coiling mould of air flue, it has solved the unable problem of putting the air flue in foil coil of present coil coiling mould.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a foil coil winding die with an air passage comprises an inner die, an air passage rod positioning plate, an air passage rod, an outer die, an end template and an inner die aligning die;
the inner die is cylindrical, annular air passage rod positioning plates are respectively fixed at two ends of the inner die, mounting holes for fixing air passage rods are formed in the end faces of the air passage rod positioning plates, a plurality of air passage rods are uniformly fixed between the mounting holes of the two air passage rod positioning plates, and the air passage rods form an air passage rod layer on the outer side of the inner die;
a lower winding is wound between the air passage rod layer and the inner die, and an upper winding is wound outside the air passage rod layer;
the outer die sleeve is arranged outside the inner die after winding is completed and the air flue rod positioning plate is detached, two ends of the outer die are sealed through end die plates, a resin pouring cavity is formed inside the outer die, an inner die straightening die is fixed on the inner side of each end die plate, the inner die straightening die is inserted into two ends of the inner die, and the inner die is fixed between the two end die plates.
As a preferable example, the air flue rod positioning plate is an annular plate provided with an intermittent joint, the annular plate is sleeved on the end part of the inner die, and the air flue rod positioning plate is fixed on the inner die by locking the intermittent joint through a screw.
As a preferable example, the air passage rod positioning plate is provided with a C-shaped arc hole with the same center, and the C-shaped arc hole is used as a mounting hole of the air passage rod.
As a preferable example, the outer die and the end die plate are locked and fixed through a long screw rod.
As a preferable example, the inner die, the outer die end and the end template are sealed by arranging a silicon rubber sealing plate.
As a preferable example, the inner side of the silicon rubber sealing plate is provided with a circular positioning template, and one positioning template is respectively arranged between the outer side of the circumference of the inner die and the air passage rod and between the inner side of the circumference of the outer die and the air passage rod.
As a preferred example, one side of the external mold is provided with a tapping line template, a wiring insert is fixed on the tapping line template, and the wiring insert is electrically connected with the upper-layer winding and the lower-layer winding.
As a preferred example, the air flue rod is externally sleeved with a glass fiber sleeve
As a preferable example, the air channel rod is made of POM material.
The invention has the beneficial effects that:
(1) the air channel rod positioning plate is arranged on the outer side of the inner die, the air channel rod is inserted after the lower-layer winding is wound, and then the upper-layer winding is wound, so that the heat dissipation air channel can be reserved more conveniently when the coil is wound;
(2) the air passage rod positioning plate is detached, the inner die is installed in the outer die, the two ends of the outer die are sealed through the end die plates, the resin pouring cavity is formed inside the outer die, resin pouring is conducted, the air passage rod is taken out after the die is detached, and a heat dissipation air passage is formed between the upper winding and the lower winding of the foil coil.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic side view of the inner mold after the airway rod positioning plate is installed;
FIG. 3 is a schematic structural view of the end face of the inner mold after the air passage rod positioning plate is installed;
FIG. 4 is a schematic side view of the upper and lower layer windings wound with the inner mold;
FIG. 5 is a schematic diagram of the end face structure of the inner mold after winding the upper layer winding and the lower layer winding;
FIG. 6 is a schematic view of the present invention after molding;
FIG. 7 is a schematic structural diagram of a split surface of a finished foil coil with air passages manufactured by the present invention;
fig. 8 is a schematic structural diagram of the bottom of the finished product of the foil coil with air passages manufactured by the invention.
In the figure: centre form 1, air flue stick locating plate 2, mounting hole 201 is interrupted and is connected 202, air flue stick 3, external mold 4, end template 5, centre form draw positive mould 6, lower floor's winding 7, upper winding 8, long screw 9, silicon rubber closing plate 10, tapping line template 11, wiring inserts 12, external mold clip 13, the foil coil finished product 14 of taking the air flue, heat dissipation air flue 15, locating template 16.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easily understood, the invention is further described with reference to the following embodiments.
Example 1
As shown in fig. 1-8, a foil coil winding mold with an air passage comprises an inner mold 1, an air passage rod positioning plate 2, an air passage rod 3, an outer mold 4, an end mold plate 5 and an inner mold straightening mold 6;
the inner mold 1 is cylindrical, annular air passage rod positioning plates 2 are respectively fixed at two ends of the inner mold 1, mounting holes 201 for fixing air passage rods 3 are formed in the end faces of the air passage rod positioning plates 2, a plurality of air passage rods 3 are uniformly fixed between the mounting holes 201 of the two air passage rod positioning plates 2, and the air passage rods 3 form an air passage rod layer on the outer side of the inner mold 1;
a lower winding 7 is wound between the air passage rod layer and the inner die 1, and an upper winding 8 is wound outside the air passage rod layer;
the outer die 4 is sleeved outside the inner die 1 which is wound and detached from the airway rod positioning plate 2, two ends of the outer die 4 are sealed through the end die plates 5, a resin pouring cavity is formed inside the outer die 4, an inner die straightening die 6 is fixed on the inner side of each end die plate 5, the inner die straightening die 6 is inserted into two ends of the inner die 1, and the inner die 1 is fixed between the two end die plates 5.
The inner mold 1, the air flue rod 3 and the outer mold 4 are equal in axial length, and the end parts of the inner mold 1, the air flue rod 3 and the outer mold 4 are aligned and fixed between the two end mold plates 5.
A method for winding a foil coil with an air passage comprises the following steps:
(1) air flue rod positioning plates 2 are arranged at two ends of the inner die 1, a lower layer winding 7 is wound on the inner die 1 between the air flue rod positioning plates 2, and the winding thickness of the lower layer winding 7 is not more than the position of a mounting hole 201 of the air flue rod 3, so that the air flue rod 3 cannot be mounted;
(2) a layer of air flue rod 3 is arranged between the air flue rod positioning plates 2 at the two ends, and an air flue rod layer is formed on the outer side of the inner mould 1;
(3) winding an upper layer winding 8 on the outer side of the air passage rod layer;
(4) after the air flue rod positioning plate 2 is removed, the coil winding is mounted in a mold, and a resin pouring cavity is formed inside the outer mold 4;
(5) carrying out resin pouring;
(6) and (3) removing the die, after the coil is cooled, pulling out the air flue rod 3 to form a heat dissipation air flue 15, and finally grinding to form a foil type coil finished product 14 with an air flue.
Example 2
As shown in fig. 2 and 3, the airway rod positioning plate 2 is an annular plate provided with an intermittent joint 202, the annular plate is sleeved on the end of the inner mold 1, and the intermittent joint 202 is locked by screws to fix the airway rod positioning plate 2 on the inner mold 1.
Four equally-divided C-shaped arc holes which are concentric are arranged on the air flue rod positioning plate 2 and serve as mounting holes 201 of the air flue rods 3. The other structure is the same as embodiment 1.
The air flue rod positioning plate 2 is an annular plate provided with the intermittent joint 202, has few fastening screws, is convenient to mount on the inner mold 1 and is also convenient to dismount; and the concentric C-shaped arc hole is adopted, so that the air flue rod 3 is convenient to mount. The spacing of the airway rods 3 can be set as desired.
Example 3
As shown in fig. 6, the outer die 4 and the end die plate 5 are locked and fixed by a long screw 9 outside the outer die 4.
The ends of the inner die 1 and the outer die 4 and the end die plate 5 are sealed by arranging a silicon rubber sealing plate 10.
The inner side of the silicon rubber sealing plate 10 is provided with a circular ring-shaped positioning template 16, and the positioning templates 16 are respectively arranged between the outer side of the circumference of the inner die 1 and the air flue rod 3 and between the inner side of the circumference of the outer die 4 and the air flue rod 3. The positioning template 16 plays a role in guiding, so that the inner mold 1 and the outer mold 4 are poured to form a regular circle.
A tapping line template 11 is arranged on one side of the external mold 4, a wiring insert 12 (an insert such as a tapping nut) is fixed on the tapping line template 11, and the wiring insert 12 is electrically connected with the upper-layer winding 8 and the lower-layer winding 7.
The outer die 4 is formed into a cylindrical cavity by splicing two semicircular arcs, wherein the upper splicing part is turned outwards to form a V-shaped outer edge, the V-shaped outer edge is clamped by an outer die clamp 13, and the lower splicing parts are connected through a tapping line template 11. The other structure is the same as embodiment 1.
The long screw 9 makes the installation and the disassembly of the outer mold 4 and the inner mold more convenient; the silicone rubber sealing plate 10 provides better sealing of the mold. One side of the outer die 4 is provided with a locally replaceable tapping line template 11, so that the matched tapping line template 11 can be conveniently replaced according to the requirements of different wiring inserts 12.
Example 4
The airway rod 3 is sleeved with a glass fiber sleeve (not shown in the figure). The air channel rod 3 is made of POM material. The other structure is the same as embodiment 1.
After the glass fiber sleeve is poured and fixed, the strength of the air passage can be enhanced. The air duct rod 3 made of the POM material has a thermal expansion coefficient larger than that of epoxy resin, and the air duct rod 3 is easily pulled out of the coil after cooling.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A foil coil winding die with an air passage is characterized by comprising an inner die, an air passage rod positioning plate, an air passage rod, an outer die, an end template and an inner die aligning die;
the inner die is cylindrical, annular air passage rod positioning plates are respectively fixed at two ends of the inner die, mounting holes for fixing air passage rods are formed in the end faces of the air passage rod positioning plates, a plurality of air passage rods are uniformly fixed between the mounting holes of the two air passage rod positioning plates, and the air passage rods form an air passage rod layer on the outer side of the inner die;
a lower winding is wound between the air passage rod layer and the inner die, and an upper winding is wound outside the air passage rod layer;
the outer die sleeve is arranged outside the inner die after winding is completed and the air flue rod positioning plate is detached, two ends of the outer die are sealed through end die plates, a resin pouring cavity is formed inside the outer die, an inner die straightening die is fixed on the inner side of each end die plate, the inner die straightening die is inserted into two ends of the inner die, and the inner die is fixed between the two end die plates.
2. The foil coil winding die with the air passage as claimed in claim 1, wherein the air passage rod positioning plate is an annular plate provided with an intermittent joint, the annular plate is sleeved on the end portion of the inner die, and the air passage rod positioning plate is fixed on the inner die by locking the intermittent joint through a screw.
3. The foil coil winding die with the air passage as claimed in claim 1, wherein the air passage rod positioning plate is provided with a concentric C-shaped circular arc hole, and the C-shaped circular arc hole is used as a mounting hole of the air passage rod.
4. The foil coil winding die with the air passage as claimed in claim 1, wherein the outer die and the end die plate are locked and fixed by a long screw.
5. The foil coil winding die with the air passage as claimed in claim 1, wherein the ends of the inner die and the outer die and the end die plate are sealed by arranging a silicone rubber sealing plate.
6. The foil coil winding die with the air passage as claimed in claim 5, wherein the silicone rubber sealing plate is provided with a circular positioning template on the inner side, and a positioning template is respectively arranged between the outer side of the circumference of the inner die and the air passage rod and between the inner side of the circumference of the outer die and the air passage rod.
7. The foil coil winding die with the air passage as claimed in claim 1, wherein a tapping line template is arranged on one side of the outer die, a wiring insert is fixed on the tapping line template, and the wiring insert is electrically connected with the upper layer winding and the lower layer winding.
8. The foil coil winding die with the air passage as claimed in claim 1, wherein the air passage rod is sleeved with a glass fiber sleeve.
9. The foil coil winding die with the air passage as claimed in claim 1, wherein the air passage rod is made of an air passage rod made of POM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784866.6A CN113539674A (en) | 2021-07-12 | 2021-07-12 | Foil type coil winding die with air passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784866.6A CN113539674A (en) | 2021-07-12 | 2021-07-12 | Foil type coil winding die with air passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113539674A true CN113539674A (en) | 2021-10-22 |
Family
ID=78127504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110784866.6A Pending CN113539674A (en) | 2021-07-12 | 2021-07-12 | Foil type coil winding die with air passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113539674A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003107364A1 (en) * | 2001-12-21 | 2003-12-24 | Abb T & D Technology Ltd. | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| CN202339815U (en) * | 2011-11-30 | 2012-07-18 | 上海通用电气广电有限公司 | Coil pouring mould |
| CN203746625U (en) * | 2014-03-14 | 2014-07-30 | 山东达驰电气有限公司 | Dry type casting high-tension coil air flue strengthening structure |
| CN105185565A (en) * | 2015-07-15 | 2015-12-23 | 江苏宏源电气有限责任公司 | Shaping mold used for curing coil in a mold-carrying way and using method thereof |
| CN206116194U (en) * | 2016-09-30 | 2017-04-19 | 上海通用电气广电有限公司 | Take horizontal casting mold of sectional type high -pressure coil of air flue |
| CN110102946A (en) * | 2019-06-05 | 2019-08-09 | 巨力自动化设备（浙江）有限公司 | Motor hair fastener type connects wire bonding positioning tool |
| CN110838405A (en) * | 2019-11-28 | 2020-02-25 | 广州中车骏发电气有限公司 | Transformer casting mold and casting method |
| CN210628075U (en) * | 2019-08-22 | 2020-05-26 | 上海Abb广电有限公司 | Dry-type transformer coil of resin casting belt POM air flue stick |
-
2021
- 2021-07-12 CN CN202110784866.6A patent/CN113539674A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003107364A1 (en) * | 2001-12-21 | 2003-12-24 | Abb T & D Technology Ltd. | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| CN202339815U (en) * | 2011-11-30 | 2012-07-18 | 上海通用电气广电有限公司 | Coil pouring mould |
| CN203746625U (en) * | 2014-03-14 | 2014-07-30 | 山东达驰电气有限公司 | Dry type casting high-tension coil air flue strengthening structure |
| CN105185565A (en) * | 2015-07-15 | 2015-12-23 | 江苏宏源电气有限责任公司 | Shaping mold used for curing coil in a mold-carrying way and using method thereof |
| CN206116194U (en) * | 2016-09-30 | 2017-04-19 | 上海通用电气广电有限公司 | Take horizontal casting mold of sectional type high -pressure coil of air flue |
| CN110102946A (en) * | 2019-06-05 | 2019-08-09 | 巨力自动化设备（浙江）有限公司 | Motor hair fastener type connects wire bonding positioning tool |
| CN210628075U (en) * | 2019-08-22 | 2020-05-26 | 上海Abb广电有限公司 | Dry-type transformer coil of resin casting belt POM air flue stick |
| CN110838405A (en) * | 2019-11-28 | 2020-02-25 | 广州中车骏发电气有限公司 | Transformer casting mold and casting method |
Non-Patent Citations (1)
| Title |
|---|
| 张刚毅主编，刘明晓副主编: "《牵引供电新技术》", 30 September 2017, 成都：西南交通大学出版社, pages: 80 - 83 * |
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Application publication date: 20211022 |