CN106531419A - Grid 35KV-level epoxy resin poured dry type transformer high-voltage coil - Google Patents
Grid 35KV-level epoxy resin poured dry type transformer high-voltage coil Download PDFInfo
- Publication number
- CN106531419A CN106531419A CN201611140168.8A CN201611140168A CN106531419A CN 106531419 A CN106531419 A CN 106531419A CN 201611140168 A CN201611140168 A CN 201611140168A CN 106531419 A CN106531419 A CN 106531419A
- Authority
- CN
- China
- Prior art keywords
- grid
- type transformer
- transformer high
- coil
- epoxy resin
- 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.)
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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
- 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
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a grid 35KV-level epoxy resin poured dry type transformer high-voltage coil. The dry type transformer high-voltage coil comprises multiple sections of winding coils arranged coaxially, wherein the adjacent two sections of winding coils are isolated by a grid cushion; the winding coils and the grid cushions are poured into a whole body through epoxy resin; and the grid cushions are formed by multiple layers of solvent-free glass fiber gridding cloth in a lamination manner. According to the grid 35KV-level epoxy resin poured dry type transformer high-voltage coil provided by the invention, the mechanical strength of the overall coil is improved; the problem of turn-to-turn short circuit caused by a condition that an upper section slides to a lower section in the coil die-filling process is avoided; the sudden short-circuit resistance capability of the coil is improved; the safety coefficient in the use process of the transformer is greatly improved; the economic practicability of the transformer is improved; and costs of enterprises are lowered while the economic benefits of the enterprises are increased.
Description
Technical field
The present invention relates to technical field of transformer manufacturing, and in particular to a kind of grid 35KV levels epoxy resin pouring dry type becomes
Depressor high-tension coil.
Background technology
Existing this kind of technology mainly adds fiberglass gridding cloth in winding mould inwall, then starts around copper cash, segmentation
Drum type brake, after complete again plus layer of glass grid cloth.In coiling, need to pad grid when every section of high pressure circular copper wire rises layer
Cloth (a kind of insulant inside transformer high-voltage coil), this liter layer mode, due to easy between grid cloth and circular copper wire
Skid, the grid cloth for rising layer easily slides, be not easy to find in winding process, also easily because dropping during die-filling tool.
No grid cloth between per layer, between per section, thing is not supported, and in dress mold process or transport process, easily causes section
Between slide, cannot know during die-filling tool, easily cause transformer high-voltage coil and burn.With can not be mutual between grid cloth between interval
Overlap and have certain space, after resin-cast molding, inside high-tension coil, circle is easily caused because of no grid cloth between per layer
Between short circuit.Head and the tail section is very high due to voltage, and no reinforced insulation easily burns.Due to no grid cloth, coil is substantially reduced
Overall mechanical strength, the coil that huge electric power when easily causing coil sudden short circuit causes is outer and internal insulating layer ftractures,
Hidden danger is left during transformator use.
The content of the invention
In view of this, it is an object of the invention to provide a kind of grid 35KV levels Cast Resin Dry-Type Transformer high-voltage line
Circle, improves the mechanical strength of whole coil, it is to avoid during die-filling, epimere is slipped to hypomere to coil, cause turn-to-turn short
The problem on road, improves the ability of the anti-sudden short circuit of coil.
The grid 35KV level Cast Resin Dry-Type Transformer high-tension coils of the present invention；Including arranged in co-axial alignment multistage around
Coil processed, is separated by grid cushion between adjacent two sections of coilings, and coiling and grid cushion are integrated by poured with epoxy resin；
The grid cushion is overlapped to form by the solvent-free fiberglass gridding cloth of multilamellar.
Further, separated using solvent-free fiberglass gridding cloth between every layer line circle of the coiling.
Further, at least outermost coil positioned at two sections of coilings at head and the tail two ends adopts glass fiber membrane glue
Band parcel.
Further, the grid cushion is cut into rectangle using the solvent-free fiberglass gridding cloth of tailing, further according to
Width between adjacent two sections of coilings builds up cuboid, is finally formed with glass fiber membrane adhesive tape parcel.
Further, by the moulding by casting in the mould, during assembling mould, the solvent-free glass fibers of two-layer are enclosed along die inside wall
Dimension grid cloth.
Further, the mold hoisting for assembling is on dolly and advances solidification stove heat, and heating-up temperature is 100 DEG C -140 DEG C,
Insulation 3-7 hours.
The invention has the beneficial effects as follows：The grid 35KV level Cast Resin Dry-Type Transformer high-tension coils of the present invention,
Improve the mechanical strength of whole coil, it is to avoid during die-filling, epimere is slipped to hypomere to coil, cause turn-to-turn short circuit
Problem, improves the ability of the anti-sudden short circuit of coil, considerably increases transformator safety coefficient in use, improves
The economic and practical of transformator, reduces the cost of enterprise, improves the economic benefit of enterprise.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
Needed for embodiment or description of the prior art, accompanying drawing to be used is briefly described.In accompanying drawing, each element or part are not
It is certain to draw according to actual ratio.
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Technical scheme is clearly illustrated, therefore is only used as example, and the protection model of the present invention can not be limited with this
Enclose.
Fig. 1 is the structural representation of the present invention, as shown in the figure：The grid 35KV level epoxy resin pouring dry types of the present embodiment
Transformer high-voltage coil；Including the multistage coiling 1 of arranged in co-axial alignment, by 2 points of grid cushion between adjacent two sections of coilings 1
It is integrated by poured with epoxy resin every, coiling 1 and grid cushion 2；The grid cushion 2 is by the solvent-free fiberglass gridding of multilamellar
Cloth is overlapped to form；Separated using solvent-free fiberglass gridding cloth 3 between every layer line circle of the coiling 1；Positioned at head and the tail
At least outermost coil of two sections of coilings 1 at two ends is wrapped up using glass fiber membrane adhesive tape；The grid cushion 2 is utilized
The solvent-free fiberglass gridding cloth of tailing, is cut into rectangle, folds further according to the width between adjacent two sections of coilings 1
Into cuboid, finally formed with glass fiber membrane adhesive tape parcel；The grid 35KV levels poured with epoxy resin of the present embodiment is done
Formula transformer high-voltage coil along mould 4 medial wall encloses two-layer solvent-free glass during assembling mould 4 by the moulding by casting in the mould 4
Glass fibrous mesh cloth 5；The mould 4 for assembling is hung on dolly and advances solidification stove heat, and heating-up temperature is 100 DEG C -140 DEG C,
Insulation 3-7 hours；Every section of coil by the solvent-free fiberglass gridding cloth of tailing, is cut into rectangle, according to section after complete
Between width, then build up cuboid, wrapped with glass fiber membrane adhesive tape, pad between per section, spacing 100 or so, and firm,
Can not loosen；Then thick and 1.7 thickness the solvent-free fiberglass gridding cloths in periphery one 0.5 are tied up again, and fortune is gone die-filling.
Coil pouring technology flow process：(1), material therefor, releasing agent, mould, epoxy resin, glass cement etc., cast sets
It is standby：Vacuum pressure casting equipment, gel solidification stove etc..(2), preparation：1st, will be the coil of the casting mold for assembling uniform
It is hung on dolly, propulsion solidification stove heat.2nd, preheating temperature is set as 100 DEG C -140 DEG C, and it is little that coil is incubated 3-7 in curing oven
When.(3), coil cast：(1) mould trolley of the good belt coil of dried is pushed into pouring can, by each cast pipe tap
The upper end of coil is distributed in, is tightened and is fixed.(2), clean observation window.(3) tank door is closed, carries out heating, evacuation.(4) it is, true
When sky is evacuated to below 100Pa, kept for 2 hours.(5), when, the resin vacuum of mixing tank is evacuated to below 200Pa, 1-2 hours are kept
(6), open and pour into a mould in initial approach to become a Buddhist believer cast (7), casting process, the charging situation at observation sprue gate treats that mould upper end has material to expose
18mm stops charging.(8), in casting process, observe each mould whether there is leak case, cast is completed without leakage.(9), pour into a mould
After the completion of, vacuum-pumping valve, vacuum pump etc. are closed, (10), vacuum is released, is opened pouring can door, immediately dolly propulsion is solidified
Stove is solidified.75～80 DEG C of temperature setting, constant temperature holding 6 hours, 85～95 DEG C, constant temperature holding 4 hours, 125～130 DEG C,
Constant temperature is kept for 8 hours.(11), when the coil after, solidifying naturally cools to less than 80 DEG C with furnace temperature, carry out the demoulding.The present invention around
The interlayer of coil processed 1 increases solvent-free fiberglass gridding cloth, enhances the dielectric strength of interlayer, reduces the machine of turn-to-turn short circuit
Rate.The grid cushion 2 that solvent-free fiberglass gridding cloth builds up be increased intersegmental, and one is firmly bonded to resin-cast
Rise, substantially increase the mechanical strength of whole coil, it is to avoid be intersegmental due to just resin, after intersegmental cast, have lacking for contraction
Fall into, after cast, coil outer surface flat smooth does not see intersegmental vestige.Coil is that of avoiding mainly during die-filling, on
Section is slipped to hypomere, causes the probability of turn-to-turn short circuit.The solvent-free fiberglass gridding cloth of tailing is make use of, tree is reduced
The consumption of fat, at two sections from beginning to end, the number of turn high to voltage has carried out half-stack package process with glass fiber membrane adhesive tape, further
The ability of insulation is enhanced, the ability of the anti-sudden short circuit of coil is improve.Considerably increase transformator peace in use
Overall coefficient, improves the economic and practical of transformator, reduces the cost of enterprise, improves the business efficiency of enterprise.
Finally it should be noted that：Various embodiments above only to illustrate technical scheme, rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme, which all should be covered in the middle of the scope of the claim and description of the present invention.
Claims (6)
1. a kind of grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil；It is characterized in that：Including arranged in co-axial alignment
Multistage coiling, is separated by grid cushion between adjacent two sections of coilings, and coiling and grid cushion are by poured with epoxy resin
It is integrated；The grid cushion is overlapped to form by the solvent-free fiberglass gridding cloth of multilamellar.
2. grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil according to claim 1；It is characterized in that：
Separated using solvent-free fiberglass gridding cloth between every layer line circle of the coiling.
3. grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil according to claim 1；It is characterized in that：
At least outermost coil positioned at two sections of coilings at head and the tail two ends is wrapped up using glass fiber membrane adhesive tape.
4. grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil according to claim 1；It is characterized in that：
The grid cushion is cut into rectangle, further according to adjacent two sections of coiling lines using the solvent-free fiberglass gridding cloth of tailing
Width between circle builds up cuboid, is finally formed with glass fiber membrane adhesive tape parcel.
5. grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil according to claim 1；It is characterized in that：
By the moulding by casting in the mould, during assembling mould, the solvent-free fiberglass gridding cloth of two-layer is enclosed along die inside wall.
6. grid 35KV levels Cast Resin Dry-Type Transformer high-tension coil according to claim 1；It is characterized in that：
The mold hoisting for assembling is on dolly and advances solidification stove heat, and heating-up temperature is 100 DEG C -140 DEG C, is incubated 3-7 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140168.8A CN106531419B (en) | 2016-12-12 | 2016-12-12 | 35KV grades of Cast Resin Dry-Type Transformer high-tension coils of grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140168.8A CN106531419B (en) | 2016-12-12 | 2016-12-12 | 35KV grades of Cast Resin Dry-Type Transformer high-tension coils of grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106531419A true CN106531419A (en) | 2017-03-22 |
| CN106531419B CN106531419B (en) | 2018-05-25 |
Family
ID=58343104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611140168.8A Expired - Fee Related CN106531419B (en) | 2016-12-12 | 2016-12-12 | 35KV grades of Cast Resin Dry-Type Transformer high-tension coils of grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106531419B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368143Y (en) * | 1998-03-06 | 2000-03-08 | 天津丰阳高新技术公司 | Thin-layer resin insulation dry power transformer |
| CN201622915U (en) * | 2009-12-18 | 2010-11-03 | 沈阳全密封变压器股份有限公司 | Three-phase thin insulation epoxy-casting dry transformer |
| CN201975238U (en) * | 2011-01-19 | 2011-09-14 | 江苏宝亨新电气有限公司 | Outer encapsulating insulation structure for transformer coil |
| CN202120728U (en) * | 2011-06-22 | 2012-01-18 | 扬州华鼎电器有限公司 | High-temperature resistant flame-retardant epoxy cast dry type transformer |
| CN203760289U (en) * | 2014-04-14 | 2014-08-06 | 南通龙翔电器设备有限公司 | Cushion block structure between high voltage coil segments of dry-type transformer |
| CN204117810U (en) * | 2014-10-20 | 2015-01-21 | 深圳勃格变压器有限公司 | The dry transformer high-tension coil of high-insulativity high mechanical properties |
| CN204946676U (en) * | 2014-12-01 | 2016-01-06 | 成都瑞烨变压器有限公司 | The transformer of Novel fastening structure |
-
2016
- 2016-12-12 CN CN201611140168.8A patent/CN106531419B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368143Y (en) * | 1998-03-06 | 2000-03-08 | 天津丰阳高新技术公司 | Thin-layer resin insulation dry power transformer |
| CN201622915U (en) * | 2009-12-18 | 2010-11-03 | 沈阳全密封变压器股份有限公司 | Three-phase thin insulation epoxy-casting dry transformer |
| CN201975238U (en) * | 2011-01-19 | 2011-09-14 | 江苏宝亨新电气有限公司 | Outer encapsulating insulation structure for transformer coil |
| CN202120728U (en) * | 2011-06-22 | 2012-01-18 | 扬州华鼎电器有限公司 | High-temperature resistant flame-retardant epoxy cast dry type transformer |
| CN203760289U (en) * | 2014-04-14 | 2014-08-06 | 南通龙翔电器设备有限公司 | Cushion block structure between high voltage coil segments of dry-type transformer |
| CN204117810U (en) * | 2014-10-20 | 2015-01-21 | 深圳勃格变压器有限公司 | The dry transformer high-tension coil of high-insulativity high mechanical properties |
| CN204946676U (en) * | 2014-12-01 | 2016-01-06 | 成都瑞烨变压器有限公司 | The transformer of Novel fastening structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106531419B (en) | 2018-05-25 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180525 Termination date: 20181212 |