CN106373758B - A kind of transformer high-voltage coil and the mold for manufacturing the coil - Google Patents
A kind of transformer high-voltage coil and the mold for manufacturing the coil Download PDFInfo
- Publication number
- CN106373758B CN106373758B CN201610981241.8A CN201610981241A CN106373758B CN 106373758 B CN106373758 B CN 106373758B CN 201610981241 A CN201610981241 A CN 201610981241A CN 106373758 B CN106373758 B CN 106373758B
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- Prior art keywords
- coil
- groove
- convex block
- mold
- epoxy resin
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Classifications
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- 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
-
- 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
- H01F27/327—Encapsulating or impregnating
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
A kind of mold the present invention relates to transformer high-voltage coil and for manufacturing the coil,The epoxy resin protective case that transformer high-voltage coil includes coil-conductor and is fixed on outside coil-conductor by pouring into a mould cladding,The upper surface of epoxy resin protective case is equipped with the first groove,The lower surface of epoxy resin protective case is equipped with the first convex block,The height of first convex block is h1,The depth of first groove is h2,H1-h2=5-10mm,Mold includes cope plate,Lower masterplate,Gusset plate,Gusset plate is bolted between cope plate and lower template,The cope plate is equipped with third groove,Third groove is forming the first convex block,The lower template is equipped with third convex block,Third convex block is forming the first groove,Greatly simplifie the structure and cost of mold,It makes simple,Without large-sized processing equipment,Mold weight is light,It is easy to operate.
Description
Technical field
The present invention relates to a kind of molds, and in particular to a kind of transformer high-voltage coil and the mould for manufacturing the coil
Tool.
Background technology
In dry-type transformer, the usual global design of transformer high-voltage coil, segmented layered structure is certain electrical meeting
Under the premise of data, 4 sections or 6 sections are generally in design 10KV, 35KV is generally 8 sections or 12 sections, specifically in actual fabrication, if
The large-scale casting mold and winding mould of whole coil are counted, structure is just integral after transformer high-voltage coil coiling and cast.
This design and making are currently widely used technological means.This design production technology of dry-type transformer introduces this from foreign countries
For many years, but long-term practice proof also has many unconquerable drawbacks, first, large mold used in production, is fabricated to
This height, once product is retrofited, mold remodeling can cause significant wastage.Second, transformer makes in use or in coil
After intact, have it is electrical bad, can not local route repair, whole coil just do not using or replacing out of service, causing the wave of material
Take or after-sale service, the raising of the difficulty of transport and cost.
Invention content
The present invention proposes a kind of transformer high-voltage coil and the mold for manufacturing the coil, pole regarding to the issue above
The earth simplifies the structure and cost of mold, makes simply, is not necessarily to large-sized processing equipment, mold weight is light, easy to operate.
Specific technical solution is as follows：
A kind of transformer high-voltage coil, including coil-conductor and it is fixed on epoxy outside coil-conductor by pouring into a mould cladding
The upper surface of resin protective case, epoxy resin protective case is equipped with several first grooves, and the lower surface of epoxy resin protective case is equipped with
Several first convex blocks, the shape of the first convex block and the shape of the first groove are mutually agreed with, and the height of the first convex block is h1, the first groove
Depth be h2, h1-h2=5-10mm, set that there are one input terminal and an outlet terminals on epoxy resin protective case.
Above-mentioned a kind of transformer high-voltage coil, wherein first convex block, the first groove are cylindrical structure.
Above-mentioned a kind of transformer high-voltage coil, wherein the coil-conductor is ellipsoidal structure.
A kind of above-mentioned transformer high-voltage coil, wherein first convex block, the first groove quantity be four.
A kind of mold for manufacturing transformer high-voltage coil, including cope plate, lower masterplate, gusset plate, gusset plate pass through
Bolt is fixed between cope plate and lower template, and the cope plate is equipped with third groove, and the depth of third groove is h3, h3=
H1, third groove is to form the first convex block, and the lower template is equipped with third convex block, and the height of third convex block is h4, h4=
H2, for third convex block to form the first groove, the lower template is equipped with coil fixing groove.
Above-mentioned a kind of mold for manufacturing transformer high-voltage coil, wherein the gusset plate is in eight-sided formation.
A kind of preparation method of above-mentioned transformer high-voltage coil, preparation method are as follows：
(1) one layer of releasing agent of film on mould inner wall, is put into baking oven and dries 2h at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mold, make coil both ends respectively with the input terminal being arranged on mold and go out
Line terminals are connected；
(3) mold-locked is fixed, is put into after baking oven preheats 1h at a temperature of 120 DEG C and takes out；
(4) poured with epoxy resin liquid is poured into mold, demoulding after 6h, finishing is fixed at a temperature of 90 DEG C i.e.
It can.
Beneficial effects of the present invention are：
The mold of the present invention is equipped with third groove and third convex block, coil-conductor and epoxide resin material cast encapsulating molding
Afterwards, there is the first convex block in upper surface, and it is the 1/n of whole coil power, electrical resistance that, which there are the first groove, the power of each coil in lower face,
10KV electric properties can be met.When mounting coil, the first convex block and the first groove of two adjacent windings coincide up and down to be set with, then
It is fastened with apparatus for fixing transformer and briquetting, is electrically connected between adjacent windings, complete assembly.Coil electric effect after assembly is equal to
Integrated poured coil, but physical arrangement is different, the intersegmental heat-dissipating space for having 5-10mm of coil.
The power of each coil of the present invention is the 1/4 of whole coil power, and electric property meets 10KV electric properties, coil
When suit, two the first convex blocks of adjacent windings, the first groove coincide up and down to be set with, and then uses folder and briquetting to fasten, adjacent windings
Between be electrically connected, complete assembly；Coil electric effect after assembly is equal to integrated poured coil, but has 5-between coil
The heat-dissipating space of 10mm.
Coil height is low, is the 1/4 of whole coil, and when cast, there is no because of coil height height, mold is high, in vacuum shape
There is bubble to arrange not clean situation under state in molded coil, improves electric property；
Such as there is the local fault of making defective work or follow-up operation, then caused by waste of material is small or after-sales service
Service it is convenient, fast, only replace same area coil；
The ventilation effect for the high-tension coil power component of dry-type transformer being made of coil because up and down coil end face it
Between have the space length of 5-10mm, thus heat dissipation area improves 20%, to significantly reduce the fortune of high-voltage power coil
Trip temperature.Improve the service life of transformer.
Description of the drawings
Fig. 1 is transformer high-voltage coil sectional view of the present invention.
Fig. 2 is transformer high-voltage coil vertical view of the present invention.
Fig. 3 is inventive die sectional view.
Fig. 4 is lower template structure chart of the present invention.
Fig. 5 is coil assembling figure of the present invention.
Specific implementation mode
Clear to make technical scheme of the present invention be more clear, the present invention is described further below in conjunction with the accompanying drawings,
Any technical characteristic to technical solution of the present invention carries out the scheme that equivalencing is obtained with conventional reasoning and each falls within guarantor of the present invention
Protect range.
Reference numeral
Coil-conductor 1, epoxy resin protective case 2, the first groove 3, the first convex block 4, input terminal 5, outlet terminal 6, on
Template 7, lower masterplate 8, gusset plate 9, third groove 10, third convex block 11, coil fixing groove 12, apparatus for fixing transformer 13, briquetting 14.
Embodiment one
A kind of transformer high-voltage coil as shown in the figure, including coil-conductor 1 and it is fixed on coil-conductor by pouring into a mould cladding
The upper surface of external epoxy resin protective case 2, epoxy resin protective case is equipped with several first grooves 3, epoxy resin protective case
Lower surface be equipped with several first convex blocks 4, the shape of the first convex block and the shape of the first groove mutually agree with, the height of the first convex block
For h1, the depth of the first groove is h2, h1-h2=5-10mm, sets that there are one input terminal 5 and one on epoxy resin protective case
Outlet terminal 6, first convex block, the first groove quantity be four, and the first convex block, the first groove are cylinder knot
Structure, the coil-conductor are ellipsoidal structure.
A kind of mold for manufacturing transformer high-voltage coil, including cope plate 7, lower masterplate 8, gusset plate 9, gusset plate are logical
It crosses bolt to be fixed between cope plate and lower template, the gusset plate is in eight-sided formation, and it is recessed that the cope plate is equipped with third
The depth of slot 10, third groove is h3, and h3=h1, for third groove to form the first convex block, the lower template is equipped with third
The height of convex block 11, third convex block is h4, and h4=h2, for third convex block to form the first groove, the lower template is equipped with line
Enclose fixing groove 12.
A method of using mold manufacturing transformer high-voltage coil, preparation method is as follows：
(1) one layer of releasing agent of film on mould inner wall, is put into baking oven and dries 2h at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mold, coil both ends is made to be connected respectively with input terminal and outlet terminal；
(3) mold-locked is fixed, is put into after baking oven preheats 1h at a temperature of 120 DEG C and takes out；
(4) poured with epoxy resin liquid is poured into mold, demoulding after 6h, finishing is fixed at a temperature of 90 DEG C i.e.
It can.
The composition of the poured with epoxy resin liquid is calculated by weight as：
110 parts of epoxy resin, 8 parts of neopelex, 10 parts of absolute ethyl alcohol, 2 parts of nano-titanium dioxide, methylol
35 parts of 1.8 parts of cellulose, 0.5 part of sodium sulphate, 2.6 parts of n-hexane, 3 parts of calcium carbonate, 8 parts of magnesium chloride, 12 parts of sodium hydroxide and water.
The preparation method of the poured with epoxy resin liquid is：Epoxy resin and water are heated into 50min at a temperature of 85 DEG C,
It heats while stirring；Remaining each component is added after heating to continue to stir, whipping temp is 140 DEG C, stirs 3h.
Embodiment two
A kind of combined transformer high-tension coil as described in embodiment one, the difference is that, the epoxy resin
The composition of potting syrup is calculated by weight as：
100 parts of epoxy resin, 5 parts of neopelex, 8 parts of absolute ethyl alcohol, 1 part of nano-titanium dioxide, methylol
0.5 part of cellulose, 0.2 part of sodium sulphate, 1.5 parts of n-hexane, 2.2 parts of calcium carbonate, 6 parts of magnesium chloride, 10 parts of sodium hydroxide and water 30
Part.
The preparation method of the poured with epoxy resin liquid is：Epoxy resin and water are heated into 40min at a temperature of 95 DEG C,
It heats while stirring；Remaining each component is added after heating to continue to stir, whipping temp is 130 DEG C, stirs 3h.
Embodiment three
A kind of combined transformer high-tension coil as described in embodiment one, the difference is that, the epoxy resin
The composition of potting syrup is calculated by weight as：
120 parts of epoxy resin, 10 parts of neopelex, 12 parts of absolute ethyl alcohol, 3 parts of nano-titanium dioxide, hydroxyl first
3 parts of base cellulose, 0.8 part of sodium sulphate, 4.6 parts of n-hexane, 3.7 parts of calcium carbonate, 10 parts of magnesium chloride, 15 parts of sodium hydroxide and water 40
Part.
The preparation method of the poured with epoxy resin liquid is：Epoxy resin and water are heated into 60min at a temperature of 80 DEG C,
It heats while stirring；Remaining each component is added after heating to continue to stir, whipping temp is 150 DEG C, stirs 3h.
The mold of the present invention is equipped with third groove and third convex block, coil-conductor and epoxide resin material cast encapsulating molding
Afterwards, upper surface has the first convex block, lower face to have the first groove, and four coils are superimposed with each other, and the power of each coil is whole
The 1/4 of coil power, electric property meet 10KV electric properties.When mounting coil, the first convex block of two adjacent windings and first
Groove coincide up and down to be set with, then the intersegmental heat-dissipating space for having 5-10mm of coil uses apparatus for fixing transformer 13 and briquetting 14 to fasten,
It is electrically connected between adjacent windings, completes assembly.
The power of each coil of the present invention is the 1/4 of whole coil power, and electric property meets 10KV electric properties, coil
When suit, two the first convex blocks of adjacent windings, the first groove coincide up and down to be set with, and then uses folder and briquetting to fasten, adjacent windings
Between be electrically connected, complete assembly；Coil electric effect after assembly is equal to integrated poured coil, but has 5-between coil
The heat-dissipating space of 10mm.
Coil height is low, is the 1/4 of whole coil, and when cast, there is no because of coil height height, mold is high, in vacuum shape
There is bubble to arrange not clean situation under state in molded coil, improves electric property；
Such as there is the local fault of making defective work or follow-up operation, then caused by waste of material is small or after-sales service
Service it is convenient, fast, only replace same area coil；
The ventilation effect for the high-tension coil power component of dry-type transformer being made of coil because up and down coil end face it
Between have the space length of 5-10mm, thus heat dissipation area improves 20%, to significantly reduce the fortune of high-voltage power coil
Trip temperature.Improve the service life of transformer.
Claims (1)
1. a kind of transformer high-voltage coil, it is characterized in that, including coil-conductor and be fixed on outside coil-conductor by pouring into a mould cladding
The epoxy resin protective case in portion, the upper surface of epoxy resin protective case are equipped with several first grooves, under epoxy resin protective case
Surface is equipped with several first convex blocks, and the shape of the first convex block and the shape of the first groove are mutually agreed with, and the height of the first convex block is h1,
The depth of first groove is h2, h1-h2=5-10mm, sets that there are one input terminal and a leading-out terminals on epoxy resin protective case
Son；
First convex block, the first groove are cylindrical structure；
The coil-conductor is ellipsoidal structure；
First convex block, the first groove quantity be four；
The preparation method of transformer high-voltage coil is as follows：
(1) one layer of releasing agent of film on mould inner wall, is put into baking oven and dries 2h at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mold, make coil both ends respectively with the input terminal and leading-out terminal that are arranged on mold
Son is connected；
(3) mold-locked is fixed, is put into after baking oven preheats 1h at a temperature of 120 DEG C and takes out；
(4) poured with epoxy resin liquid is poured into mold, demoulding, finishing after 6h is fixed at a temperature of 90 DEG C；
Mold for manufacturing transformer high-voltage coil includes cope plate, lower masterplate, gusset plate, and gusset plate is bolted on
Between cope plate and lower template, the cope plate is equipped with third groove, and the depth of third groove is h3, h3=h1, and third is recessed
For slot to form the first convex block, the lower template is equipped with third convex block, and the height of third convex block is h4, h4=h2, and third is convex
For block to form the first groove, the lower template is equipped with coil fixing groove；
The gusset plate is in eight-sided formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981241.8A CN106373758B (en) | 2016-11-08 | 2016-11-08 | A kind of transformer high-voltage coil and the mold for manufacturing the coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981241.8A CN106373758B (en) | 2016-11-08 | 2016-11-08 | A kind of transformer high-voltage coil and the mold for manufacturing the coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373758A CN106373758A (en) | 2017-02-01 |
| CN106373758B true CN106373758B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610981241.8A Active CN106373758B (en) | 2016-11-08 | 2016-11-08 | A kind of transformer high-voltage coil and the mold for manufacturing the coil |
Country Status (1)
| Country | Link |
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| CN (1) | CN106373758B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917782A (en) * | 2021-01-28 | 2021-06-08 | 中国航发长春控制科技有限公司 | Precision valve control coil encapsulation mold and encapsulation process method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010011959A (en) * | 1999-07-31 | 2001-02-15 | 이종수 | resin molding - type coil |
| CN101593611A (en) * | 2008-05-29 | 2009-12-02 | 马志刚 | The module winding general transformer of negative electric weight can neutralize |
| CN202189655U (en) * | 2011-08-04 | 2012-04-11 | 福州天宇电气股份有限公司 | Segmental casting assembled coil |
| CN103745812A (en) * | 2013-12-31 | 2014-04-23 | 卧龙电气集团股份有限公司 | Resin-insulated dry-type traction rectifier transformer with transverse and longitudinal air passages |
| CN104875311A (en) * | 2015-04-24 | 2015-09-02 | 江苏天利机电有限公司 | Production and pouring method of dry type transformer coil |
| CN205104362U (en) * | 2015-11-19 | 2016-03-23 | 沈阳中变电气有限责任公司 | Interior external mold is epoxy cast dry type transformer coil casting mold of pressure equipment respectively |
| CN206282705U (en) * | 2016-11-08 | 2017-06-27 | 江苏宝亨新电气有限公司 | A kind of transformer high-voltage coil and the mould for manufacturing the coil |
-
2016
- 2016-11-08 CN CN201610981241.8A patent/CN106373758B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010011959A (en) * | 1999-07-31 | 2001-02-15 | 이종수 | resin molding - type coil |
| CN101593611A (en) * | 2008-05-29 | 2009-12-02 | 马志刚 | The module winding general transformer of negative electric weight can neutralize |
| CN202189655U (en) * | 2011-08-04 | 2012-04-11 | 福州天宇电气股份有限公司 | Segmental casting assembled coil |
| CN103745812A (en) * | 2013-12-31 | 2014-04-23 | 卧龙电气集团股份有限公司 | Resin-insulated dry-type traction rectifier transformer with transverse and longitudinal air passages |
| CN104875311A (en) * | 2015-04-24 | 2015-09-02 | 江苏天利机电有限公司 | Production and pouring method of dry type transformer coil |
| CN205104362U (en) * | 2015-11-19 | 2016-03-23 | 沈阳中变电气有限责任公司 | Interior external mold is epoxy cast dry type transformer coil casting mold of pressure equipment respectively |
| CN206282705U (en) * | 2016-11-08 | 2017-06-27 | 江苏宝亨新电气有限公司 | A kind of transformer high-voltage coil and the mould for manufacturing the coil |
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| Publication number | Publication date |
|---|---|
| CN106373758A (en) | 2017-02-01 |
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