CN102254673A - Externally encapsulated insulation structure of transformer coils - Google Patents
Externally encapsulated insulation structure of transformer coils Download PDFInfo
- Publication number
- CN102254673A CN102254673A CN 201110021658 CN201110021658A CN102254673A CN 102254673 A CN102254673 A CN 102254673A CN 201110021658 CN201110021658 CN 201110021658 CN 201110021658 A CN201110021658 A CN 201110021658A CN 102254673 A CN102254673 A CN 102254673A
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- glass
- insulation structure
- layers
- encapsulated insulation
- externally encapsulated
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Abstract
The invention discloses an externally encapsulated insulation structure of transformer coils, comprising glass mat layers, glass mesh layers and filling resin layers, wherein the glass mat layers and the glass mesh layers are superposed alternately and the outermost layer is a filling resin layer. The externally encapsulated insulation structure has the advantages that glass mats are combined with glass meshes so as to intensify the pouring of filling resins, thus forming a composite mat-mesh externally encapsulated insulation structure of which the thickness is 3-5mm, thereby reaching the medium thickness insulation, therefore, the coils are prevented from being cracked due to expansion caused by heat and contraction caused by cold. The externally encapsulated insulation structure is suitable for the coils with a round or non-round structure, and has strong practical applicability and remarkable effects.
Description
Technical field
The present invention relates to a kind of transformer coil and seal insulation system outward.
Background technology
At present, transformer coil is carried out the outer insulation two kinds of structures of employing usually of sealing: a kind of is to coat enameled wire loop with glass felt class material, uses resin-cast then; Another kind is to coat enameled wire loop with glass grid class material, pours into a mould with filler resin then.For capacity at 2500KVA and following transformer, adopt above-mentioned two kinds to seal insulation system outward to coil, generally can only reach the thin insulating of thickness at 2～3mm, when loop construction is shaped as when non-circular, the reinforcement material of thin insulating is easy to expose as glass grid class or glass felt class material, influences mass of coil and outward appearance, if when bringing gravitation to concentrate again owing to the reason of mould structure, the problem of pouring ladle seal cracking also can appear.
Summary of the invention
Goal of the invention: at the problems referred to above, the purpose of this invention is to provide a kind of transformer coil and seal insulation system outward, particularly be applicable to the outer insulation system of sealing of non-circular structure coil, improve mass of coil.
Technical scheme: a kind of transformer coil is sealed insulation system outward, comprises glass carpet veneer, glass web compartment and filler resin layer, and described glass carpet veneer and described glass web compartment be stack alternately, and outermost layer is described filler resin layer.
The thickness of the glass grid cloth of described glass web compartment is less than 0.6mm, and degree of flexibility is good, is easy to twine, and can adapt to the winding requirement of coil circle or non-circular structure, and glass web compartment desired thickness can twine the compound glass grid cloth according to insulating requirements.
Described glass carpet veneer is the short felt of glass, to the good penetrability of filler resin.
Beneficial effect: compared with prior art, advantage of the present invention is that employing glass felt and glass grid are compound, cast to filler resin plays booster action, form the compound outer insulation system of sealing of feltwork, thickness reaches the middle heavy insulation of 3～5mm, prevents the cold and hot contraction of coil and ftractures, and is applicable to coil circle or non-circular structure, practical, effect is obvious.
Description of drawings
Accompanying drawing is sealed the half sectional view of insulation system outward for a kind of transformer coil of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
As shown in drawings, a kind of transformer coil is sealed insulation system outward, comprises glass carpet veneer 1, glass web compartment 2 and filler resin layer 3, described glass carpet veneer 1 and alternately stack of described glass web compartment 2, and outermost layer is described filler resin layer 3.
Enameled wire loop 4, be the enamelled wire of coil and the mixture of interlayer materials coiling, successively alternately coat the described enameled wire loop 4 of winding in its outside with the short felt of glass, glass grid cloth, constitute the composite construction of glass carpet veneer 1-glass web compartment 2-glass carpet veneer 1-glass web compartment 2, and then it is poured into a mould with filler resin with mould, form filler resin layer 3, promptly constitute a kind of transformer coil of the present invention and seal insulation system outward.
Glass felt and glass grid are glass fiber material, and thermal endurance class all more than the F level, satisfies electrical standard separately.Near the glass web compartment 2 of filler resin layer 3, also play the effect of the short felt of parcel glass, make the smooth outer surface of cast back filler resin layer 3.
Claims (3)
1. a transformer coil is sealed insulation system outward, comprise glass carpet veneer (1), glass web compartment (2) and filler resin layer (3), it is characterized in that: described glass carpet veneer (1) and described glass web compartment (2) be stack alternately, and outermost layer is a described filler resin layer (3).
2. a kind of transformer coil according to claim 1 is sealed insulation system outward, it is characterized in that: the thickness of the glass grid cloth of described glass web compartment (2) is less than 0.6mm.
3. a kind of transformer coil according to claim 1 is sealed insulation system outward, it is characterized in that: described glass carpet veneer (1) is the short felt of glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021658 CN102254673A (en) | 2011-01-19 | 2011-01-19 | Externally encapsulated insulation structure of transformer coils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021658 CN102254673A (en) | 2011-01-19 | 2011-01-19 | Externally encapsulated insulation structure of transformer coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102254673A true CN102254673A (en) | 2011-11-23 |
Family
ID=44981871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110021658 Pending CN102254673A (en) | 2011-01-19 | 2011-01-19 | Externally encapsulated insulation structure of transformer coils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102254673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972289A (en) * | 2017-12-05 | 2018-05-01 | 苏州太湖电工新材料股份有限公司 | The preparation method of epoxy glass fabric reinforced insulation end circle |
| CN108022739A (en) * | 2016-11-04 | 2018-05-11 | 许继集团有限公司 | The package method and dry type hollow shunt reactor of a kind of dry type hollow shunt reactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321620Y (en) * | 1998-02-21 | 1999-06-02 | 建材二五三厂 | Glass fibre grid cloth composite thin felt |
| 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 |
| CN2906856Y (en) * | 2006-05-31 | 2007-05-30 | 天津泰达节能技术投资咨询有限公司 | Thin resin insulated dry-type 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 |
-
2011
- 2011-01-19 CN CN 201110021658 patent/CN102254673A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321620Y (en) * | 1998-02-21 | 1999-06-02 | 建材二五三厂 | Glass fibre grid cloth composite thin felt |
| 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 |
| CN2906856Y (en) * | 2006-05-31 | 2007-05-30 | 天津泰达节能技术投资咨询有限公司 | Thin resin insulated dry-type 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022739A (en) * | 2016-11-04 | 2018-05-11 | 许继集团有限公司 | The package method and dry type hollow shunt reactor of a kind of dry type hollow shunt reactor |
| CN108022739B (en) * | 2016-11-04 | 2021-06-08 | 许继集团有限公司 | Packaging method of dry type hollow parallel reactor and dry type hollow parallel reactor |
| CN107972289A (en) * | 2017-12-05 | 2018-05-01 | 苏州太湖电工新材料股份有限公司 | The preparation method of epoxy glass fabric reinforced insulation end circle |
| CN111660588A (en) * | 2017-12-05 | 2020-09-15 | 苏州太湖电工新材料股份有限公司 | Preparation method of epoxy glass cloth reinforced insulation end ring |
| CN111660588B (en) * | 2017-12-05 | 2022-04-01 | 苏州太湖电工新材料股份有限公司 | Preparation method of epoxy glass cloth reinforced insulation end ring |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |