CN106373758A - Transformer high-tension coil and mold for manufacturing same - Google Patents
Transformer high-tension coil and mold for manufacturing same Download PDFInfo
- Publication number
- CN106373758A CN106373758A CN201610981241.8A CN201610981241A CN106373758A CN 106373758 A CN106373758 A CN 106373758A CN 201610981241 A CN201610981241 A CN 201610981241A CN 106373758 A CN106373758 A CN 106373758A
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- coil
- groove
- projection
- transformer high
- mould
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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
The invention relates to a transformer high-tension coil and a mold for manufacturing the coil. The transformer high-tension coil comprises a coil conductor and an epoxy resin protective sleeve fixed to the outside of the coil conductor through pouring and wrapping, wherein a first groove is formed in the upper surface of the epoxy resin protective sleeve; a first convex block is arranged on the lower surface of the epoxy resin protective sleeve; the height of the first convex block is h1; the depth of the first groove is h2; and h1-h2 is equal to 5 to 10 mm. The mold comprises an upper template, a lower template and a side wall plate, wherein the side wall plate is fixed between the upper template and the lower template through bolts; a third groove is formed in the upper template, and the third groove is used for forming the first convex block; a third convex block is arranged on the lower template, and the third convex block is used for forming the first groove. The structure of the mold is greatly simplified, the cost of the mold is greatly reduced, the mold is simple to manufacture, large-scale processing equipment is not needed, and the mold is light in weight and simple and convenient in operation.
Description
Technical field
The present invention relates to a kind of mould is and in particular to a kind of transformer high-voltage coil and for manufacturing the mould of this coil
Tool.
Background technology
In dry-type transformer, the usual global design of transformer high-voltage coil, segmented layered structure, necessarily electric meeting
On the premise of data, it is generally 4 sections or 6 sections in design 10kv, generally 8 sections or 12 sections of 35kv, specifically in actual fabrication, if
Just it is an overall structure after the large-scale casting mold of meter whole coil and winding mould, transformer high-voltage coil coiling and cast.
This design and making are currently widely used technological means.Dry-type transformer this design production technology introduces this from external
For many years, but long-term practice proves the drawbacks of also have many unconquerable, first, large mold used by production, be fabricated to
This height, once product remodeling, mould is retrofited, and can cause significant wastage.Second, transformator makes in use or in coil
After intact, have electrically bad, can not local route repair, whole coil just not using or change out of service, cause the wave of material
Take or after-sale service, transport difficulty and cost raising.
Content of the invention
The present invention proposes a kind of transformer high-voltage coil and the mould for manufacturing this coil, pole for the problems referred to above
The earth simplifies structure and the cost of mould, makes simple, and without large-sized processing equipment, mold weight is light, easy and simple to handle.
Specific technical scheme is as follows:
A kind of transformer high-voltage coil, is fixed on the epoxy outside coil-conductor including coil-conductor with by cast cladding
Resin protective case, the upper surface of epoxy resin protective case is provided with some first grooves, and the lower surface of epoxy resin protective case is provided with
Some first projections, the shape phase of the shape of the first projection and the first groove is agreed with, and the height of the first projection is h1, the first groove
Depth be h2, h1 h2=5 10mm, epoxy resin protective case is provided with an input terminal and an outlet terminal.
A kind of above-mentioned transformer high-voltage coil, wherein, described first projection, the first groove are cylindrical structure.
A kind of above-mentioned transformer high-voltage coil, wherein, described coil-conductor is ellipsoidal structure.
A kind of above-mentioned transformer high-voltage coil, wherein, described first projection, the quantity of the first groove are four.
A kind of mould for manufacturing transformer high-voltage coil, including cope match-plate pattern, lower masterplate, gusset plate, gusset plate is passed through
It is bolted between cope match-plate pattern and lower template, described cope match-plate pattern is provided with the 3rd groove, and the depth of the 3rd groove is h3, h3=
H1, in order to form the first projection, described lower template is provided with the 3rd projection to the 3rd groove, and the height of the 3rd projection is h4, h4=
H2, in order to form the first groove, described lower template is provided with coil fixing groove to the 3rd projection.
A kind of above-mentioned mould for manufacturing transformer high-voltage coil, wherein, described gusset plate is in eight-sided formation.
A kind of preparation method of above-mentioned transformer high-voltage coil, its preparation method is as follows:
(1) one layer of releasing agent of film on mould inner wall, puts into and dries 2h in baking oven at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mould, make coil two ends respectively with the input terminal being arranged on mould and going out
Line terminals are connected；
(3) mold-locked is fixed, put into after baking oven preheats 1h at a temperature of 120 DEG C and take out；
(4) poured with epoxy resin liquid is poured in mould, the demoulding, polish after fixing 6h at a temperature of 90 DEG C is
Can.
The invention has the benefit that
The mould of the present invention is provided with the 3rd groove and the 3rd projection, coil-conductor and epoxide resin material cast encapsulating molding
Afterwards, there is the first projection upper surface, and there is the first groove lower surface, and the power of each coil is the 1/n of whole coil power, electrical resistance
10kv electric property can be met.During mounting coil, the first projection of two adjacent windings and the first groove coincide up and down and are set with, then
With apparatus for fixing transformer and briquetting fastening, it is electrically connected between adjacent windings, complete to assemble.Coil electric effect after assembling is equal to
Integrated poured coil, but physical arrangement is different, the intersegmental heat-dissipating space 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 property, coil
During suit, two adjacent windings the first projections, the first groove coincide up and down and are set with, and then use folder and briquetting fastening, adjacent windings
Between be electrically connected, complete assemble；Coil electric effect after assembling 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, during cast, does not exist because of coil height height, mould is high, in vacuum shape
There is the unnet situation of bubble row in molded coil under state, improve electric property；
As making defective work, or the local fault of follow-up operation, then the waste of material causing is little or after-sales service
Service is convenient, fast, only changes the coil of same area；
The ventilation effect of the high-tension coil power component being made up of coil of dry-type transformer because upper and lower coil end face it
Between have the space length of 5 10mm, thus area of dissipation improves 20%, thus significantly reducing the fortune of high-voltage power coil
Trip temperature.Improve the service life of transformator.
Brief description
Fig. 1 is transformer high-voltage coil sectional view of the present invention.
Fig. 2 is transformer high-voltage coil top 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 embodiment
For making technical scheme become apparent from clearly, the present invention is described further below in conjunction with the accompanying drawings,
The scheme that any technical characteristic to technical solution of the present invention carries out equivalencing and conventional reasoning draws each falls within the present invention and protects
Shield scope.
Reference
Coil-conductor 1, epoxy resin protective case 2, the first groove 3, the first projection 4, input terminal 5, outlet terminal 6, on
Template 7, lower masterplate 8, gusset plate 9, the 3rd groove 10, the 3rd projection 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, is fixed on coil-conductor including coil-conductor 1 with by pouring into a mould cladding
Outside epoxy resin protective case 2, the upper surface of epoxy resin protective case is provided with some first grooves 3, epoxy resin protective case
Lower surface be provided with some first projections 4, the shape phase of the shape of the first projection and the first groove is agreed with, the height of the first projection
For h1, the depth of the first groove is h2, h1 h2=5 10mm, and epoxy resin protective case is provided with an input terminal 5 and one
Outlet terminal 6, described first projection, the quantity of the first groove are four, and the first projection, the first groove are cylinder knot
Structure, described coil-conductor is ellipsoidal structure.
A kind of mould for manufacturing transformer high-voltage coil, including cope match-plate pattern 7, lower masterplate 8, gusset plate 9, gusset plate is led to
Cross and be bolted between cope match-plate pattern and lower template, described gusset plate is in eight-sided formation, and it is recessed that described cope match-plate pattern is provided with the 3rd
Groove 10, the depth of the 3rd groove is h3, h3=h1, and in order to form the first projection, described lower template is provided with the 3rd to the 3rd groove
Projection 11, the height of the 3rd projection is h4, h4=h2, and in order to form the first groove, described lower template is provided with line to the 3rd projection
Circle fixing groove 12.
A kind of method of use Making mold transformer high-voltage coil, its preparation method is as follows:
(1) one layer of releasing agent of film on mould inner wall, puts into and dries 2h in baking oven at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mould, so that coil two ends is connected with input terminal and outlet terminal respectively；
(3) mold-locked is fixed, put into after baking oven preheats 1h at a temperature of 120 DEG C and take out；
(4) poured with epoxy resin liquid is poured in mould, the demoulding, polish after fixing 6h at a temperature of 90 DEG C is
Can.
The composition of described poured with epoxy resin liquid is calculated by weight as:
110 parts of epoxy resin, 8 parts of dodecylbenzene sodium sulfonate, 10 parts of dehydrated alcohol, 2 parts of nano titanium oxide, methylol
1.8 parts of cellulose, 0.5 part of sodium sulfate, 2.6 parts of normal hexane, 3 parts of Calcium Carbonate, 8 parts of magnesium chloride, 12 parts of sodium hydroxide and 35 parts of water.
The preparation method of described poured with epoxy resin liquid is: epoxy resin and water are heated 50min at a temperature of 85 DEG C,
Heat while stirring；Remaining each component is added to continue stirring after heating, whipping temp is 140 DEG C, stirs 3h.
Embodiment two
A kind of combined transformer high-tension coil as described in embodiment one, its difference is, described epoxy resin
The composition of potting syrup is calculated by weight as:
100 parts of epoxy resin, 5 parts of dodecylbenzene sodium sulfonate, 8 parts of dehydrated alcohol, 1 part of nano titanium oxide, methylol
0.5 part of cellulose, 0.2 part of sodium sulfate, 1.5 parts of normal 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 described poured with epoxy resin liquid is: epoxy resin and water are heated 40min at a temperature of 95 DEG C,
Heat while stirring；Remaining each component is added to continue stirring after heating, whipping temp is 130 DEG C, stirs 3h.
Embodiment three
A kind of combined transformer high-tension coil as described in embodiment one, its difference is, described epoxy resin
The composition of potting syrup is calculated by weight as:
120 parts of epoxy resin, 10 parts of dodecylbenzene sodium sulfonate, 12 parts of dehydrated alcohol, 3 parts of nano titanium oxide, hydroxyl first
3 parts of base cellulose, 0.8 part of sodium sulfate, 4.6 parts of normal 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 described poured with epoxy resin liquid is: epoxy resin and water are heated 60min at a temperature of 80 DEG C,
Heat while stirring；Remaining each component is added to continue stirring after heating, whipping temp is 150 DEG C, stirs 3h.
The mould of the present invention is provided with the 3rd groove and the 3rd projection, coil-conductor and epoxide resin material cast encapsulating molding
Afterwards, there is the first projection upper surface, and there is the first groove lower surface, and four coils are superimposed with each other, and the power of each coil is overall
The 1/4 of coil power, electric property meets 10kv electric property.During mounting coil, the first projection of two adjacent windings and first
Groove coincide up and down and is set with, and then the intersegmental heat-dissipating space having 5 10mm of coil is fastened with apparatus for fixing transformer 13 and briquetting 14,
It is electrically connected between adjacent windings, complete to assemble.
The power of each coil of the present invention is the 1/4 of whole coil power, and electric property meets 10kv electric property, coil
During suit, two adjacent windings the first projections, the first groove coincide up and down and are set with, and then use folder and briquetting fastening, adjacent windings
Between be electrically connected, complete assemble；Coil electric effect after assembling 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, during cast, does not exist because of coil height height, mould is high, in vacuum shape
There is the unnet situation of bubble row in molded coil under state, improve electric property；
As making defective work, or the local fault of follow-up operation, then the waste of material causing is little or after-sales service
Service is convenient, fast, only changes the coil of same area；
The ventilation effect of the high-tension coil power component being made up of coil of dry-type transformer because upper and lower coil end face it
Between have the space length of 5 10mm, thus area of dissipation improves 20%, thus significantly reducing the fortune of high-voltage power coil
Trip temperature.Improve the service life of transformator.
Claims (7)
1. a kind of transformer high-voltage coil, it is characterized by, it is fixed on outside coil-conductor including coil-conductor with by pouring into a mould cladding
The epoxy resin protective case in portion, the upper surface of epoxy resin protective case is provided with some first grooves, under epoxy resin protective case
Surface is provided with some first projections, and the shape phase of the shape of the first projection and the first groove is agreed with, and the height of the first projection is h1,
The depth of the first groove is h2, h1 h2=5 10mm, and epoxy resin protective case is provided with an input terminal and a leading-out terminal
Son.
2. a kind of transformer high-voltage coil as claimed in claim 1, it is characterized by, described first projection, the first groove are
Cylindrical structure.
3. a kind of transformer high-voltage coil as claimed in claim 1, it is characterized by, described coil-conductor is ellipsoidal structure.
4. a kind of transformer high-voltage coil as claimed in claim 1, it is characterized by, described first projection, the number of the first groove
Amount is four.
5. a kind of mould for manufacturing transformer high-voltage coil, it is characterized by, including cope match-plate pattern, lower masterplate, gusset plate, gusset
Plate is bolted between cope match-plate pattern and lower template, and described cope match-plate pattern is provided with the 3rd groove, and the depth of the 3rd groove is
H3, h3=h1, in order to form the first projection, described lower template is provided with the 3rd projection to the 3rd groove, and the height of the 3rd projection is
H4, h4=h2, in order to form the first groove, described lower template is provided with coil fixing groove to the 3rd projection.
6. a kind of mould for manufacturing transformer high-voltage coil as claimed in claim 5, it is characterized by, described gusset plate is in
Eight-sided formation.
7. a kind of preparation method of transformer high-voltage coil as claimed in claim 1, its preparation method is as follows:
(1) one layer of releasing agent of film on mould inner wall, puts into and dries 2h in baking oven at a temperature of 220 DEG C；
(2) coil-conductor is fixed in mould, make coil two ends respectively with the input terminal being arranged on mould and leading-out terminal
Son is connected；
(3) mold-locked is fixed, put into after baking oven preheats 1h at a temperature of 120 DEG C and take out；
(4) poured with epoxy resin liquid is poured in mould, the demoulding, polish after fixing 6h at a temperature of 90 DEG C.
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 true CN106373758A (en) | 2017-02-01 |
| CN106373758B CN106373758B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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Cited By (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 |
Family Cites Families (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 |
| CN103745812B (en) * | 2013-12-31 | 2016-09-28 | 卧龙电气集团股份有限公司 | A kind of resin-insulated dry traction rectifier transformer with transverse and longitudinal air flue |
| 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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2016
- 2016-11-08 CN CN201610981241.8A patent/CN106373758B/en active Active
Cited By (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 |
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| CN106373758B (en) | 2018-08-17 |
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