CN205303142U - Heavy current glue soaks fibre dry -type electric capacity type transformer bushing - Google Patents
Heavy current glue soaks fibre dry -type electric capacity type transformer bushing Download PDFInfo
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- CN205303142U CN205303142U CN201620002778.0U CN201620002778U CN205303142U CN 205303142 U CN205303142 U CN 205303142U CN 201620002778 U CN201620002778 U CN 201620002778U CN 205303142 U CN205303142 U CN 205303142U
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Abstract
The application discloses heavy current glue soaks fibre dry -type electric capacity type transformer bushing, this transformer bushing include metallic conductor, thin wall aluminum pipe, electric capacity partial -voltage type insulating cylinder, silicon rubber full skirt and metal flange, thin wall aluminum pipe cover is established in the metallic conductor outside, is provided with the cooling oil duct between thin wall aluminum pipe and the metallic conductor, and thin wall aluminum pipe and metallic conductor equipotential link to each other, the insulating barrel casing winding of electric capacity partial -voltage type is in the thin wall aluminum pipe outside, be provided with a plurality of layers of electric capacity screen in the electric capacity partial -voltage type insulating cylinder, silicon rubber full skirt cover is established at the electric capacity partial -voltage type insulating cylinder outside, metal flange and electric capacity partial -voltage type insulating cylinder fixed connection. Electric capacity partial pressure mode is adopted in this application, and the design time is according to the principle of " waiting electric capacity, constant voltage ", the high voltage by uniform distribution to each condenser, the voltage that every condenser was undertaken is the same, has guaranteed that radial electric field strength's is even, because the poor effect of equidistance ladder is shielded to electric capacity, axial electric field strength also is even again.
Description
Technical field
This utility model relates to a kind of big electric current glue leaching fiber dry-type capacitance type bushing shell for transformer.
Background technology
At present, widely used strong current transformer sleeve pipe is mainly assembled by metallic conductor, insulator and metal flange, is filled with 30mm thickness transformer oil and uses as insulation and cooling between insulator and electric conductor. This radial and axial electric field intensity of structure transformer sleeve pipe is uneven, and the technological requirement filling transformer oil is high, it is easy to produce shelf depreciation and overall weight weight.
Therefore, a kind of lightweight, uniform bushing shell for transformer of the radial and axial electric field intensity of bushing shell for transformer of design becomes those skilled in the art and needs badly and solve the technical problem that.
Summary of the invention
For Problems existing in background technology, the purpose of this utility model is in that to provide a kind of big electric current glue leaching fiber dry-type capacitance type bushing shell for transformer, this bushing shell for transformer adopts capacitance partial pressure mode, according to the principle of " waiting electric capacity; wait voltage " during design, high voltage is evenly distributed on each capacitor, and the voltage that each capacitor undertakes is identical, it is ensured that radial electric field intensity uniform; Again due to the effect of the equidistant ladder difference of capacitance plate, axial electric field strength is also uniform.
The purpose of this utility model is achieved through the following technical solutions:
A kind of big electric current glue leaching fiber dry-type capacitance type bushing shell for transformer, described bushing shell for transformer includes metallic conductor, thin-wall aluminium pipe, capacitance-voltage-distributing type insulating cylinder, silicon rubber umbrella skirt and metal flange; Wherein, described thin-wall aluminium pipe is set in outside described metallic conductor, is provided with cooling oil duct between thin-wall aluminium pipe and metallic conductor, and thin-wall aluminium pipe is connected with metallic conductor isoelectric level; Described capacitance-voltage-distributing type insulating cylinder is set in outside described thin-wall aluminium pipe; Some layer capacitance screens it are provided with in capacitance-voltage-distributing type insulating cylinder;Described silicon rubber umbrella skirt is set in outside described capacitance-voltage-distributing type insulating cylinder, and described metal flange is fixing with capacitance-voltage-distributing type insulating cylinder to be connected.
Further, the length of the described capacitance plate of some layers, according to the equal principle of capacitance, progressively shortens from inside to outside, forms equidistant ladder poor, the outermost layer capacitance plate ejector by going between be arranged on metal flange.
Further, described capacitance-voltage-distributing type insulating cylinder is made up of glass fibre and epoxy resin.
Further, described capacitance plate is made up of low resistance semi-conductive tape.
Further, cooling oil duct thickness it is provided with between described thin-wall aluminium pipe and described metallic conductor.
Further, the junction, upper end of described capacitance-voltage-distributing type insulating cylinder and metallic conductor is provided with sealing ring, and the junction, lower end of capacitance-voltage-distributing type insulating cylinder and metallic conductor is provided with spring attachment.
Further, described spring attachment is fixedly installed on the lower end of described metallic conductor, and described spring attachment is made up of several little springs and spring base.
Further, described sealing ring is made up of oil-resistant acrylonitrile-butadirubber rubber.
This utility model has following positive technique effect:
The bushing shell for transformer of the application adopts capacitance partial pressure mode, and according to the principle of " waiting electric capacity, wait voltage " during design, high voltage is evenly distributed on each capacitor, and the voltage that each capacitor undertakes is identical, it is ensured that radial electric field intensity uniform; Again due to the effect of the equidistant ladder difference of capacitance plate, axial electric field strength is also uniform.
Accompanying drawing explanation
Fig. 1 is the semi-section structural map of bushing shell for transformer of the present utility model;
Fig. 2 is the semi-section structural map of capacitance-voltage-distributing type insulating cylinder of the present utility model;
Fig. 3 is the circuit diagram of equivalent capacitance of the present utility model.
Detailed description of the invention
Below, with reference to accompanying drawing, this utility model is more fully illustrated, shown in the drawings of exemplary embodiment of the present utility model. But, this utility model can be presented as multiple multi-form, is not construed as the exemplary embodiment being confined to describe here. And it is to provide these embodiments, so that this utility model is fully and completely, and scope of the present utility model is fully conveyed to those of ordinary skill in the art.
For ease of illustrating, here can use such as " on " the space relative terms such as D score " left side " " right side ", it is used for shown in figure a element or the feature relation relative to another element or feature is described. It should be understood that except the orientation shown in figure, spatial terminology is intended to include device different azimuth in use or operation. Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be located into other elements or feature " on ". Therefore, exemplary term D score can comprise upper and lower both orientation. Device can otherwise position (90-degree rotation or be positioned at other orientation), relatively illustrates used herein of space correspondingly to explain.
As Figure 1-3, big electric current glue of the present utility model leaching fiber dry-type capacitance type bushing shell for transformer includes metallic conductor 1, thin-wall aluminium pipe 3, capacitance-voltage-distributing type insulating cylinder 4, insulation full skirt 7 and metal flange 9; Wherein, thin-wall aluminium pipe 3 is set in outside metallic conductor 1, is provided with cooling oil duct 6 between thin-wall aluminium pipe 3 and metallic conductor 1, and thin-wall aluminium pipe 3 is connected with metallic conductor 1 isoelectric level; Capacitance-voltage-distributing type insulating cylinder 4 set is wrapped in outside thin-wall aluminium pipe 3;Some layer capacitance screens 5 it are provided with in capacitance-voltage-distributing type insulating cylinder 4; Insulation full skirt 7 is set in outside capacitance-voltage-distributing type insulating cylinder 4, and metal flange 9 is fixing with capacitance-voltage-distributing type insulating cylinder 4 to be connected.
Additionally, the length of some layer capacitance screens 5 of the application is according to the equal principle of capacitance, progressively shortening from inside to outside, form equidistant ladder poor, outermost layer capacitance plate 11 is connected with the ejector 8 being arranged on metal flange 9 by going between; According to the principle of " waiting electric capacity, wait voltage ", high voltage is evenly distributed on each capacitor, and the voltage that each capacitor undertakes is identical, it is ensured that radial electric field intensity uniform; Again due to the effect of the equidistant ladder difference of capacitance plate, axial electric field strength is also uniform.
Preferably, the capacitance-voltage-distributing type insulating cylinder 4 of the application is made up of glass fibre and epoxy resin, and its advantage is good insulation preformance, and mechanical strength is high; And capacitance plate 5 is made up of low resistance semi-conductive tape; Cooling oil duct 6 it is provided with between thin-wall aluminium pipe 3 and metallic conductor 1.
Preferably, the capacitance-voltage-distributing type insulating cylinder 4 of the application and the junction, upper end of metallic conductor 1 are provided with sealing ring 2, and sealing ring 2 is made up of oil-resistant acrylonitrile-butadirubber rubber; The junction, lower end of capacitance-voltage-distributing type insulating cylinder 4 and metallic conductor 1 is provided with spring attachment 10. Spring attachment 10 is fixedly installed on the lower end of metallic conductor 1, and spring attachment 10 is made up of several little springs and spring base; Ensure that sealing ring 2 has certain decrement by arranging spring attachment 10, will not seepage transformer oil.
The capacitance-voltage-distributing type insulating cylinder 4 of the application is to use glass fibre infiltration epoxy resin to be entangled in outside thin-wall aluminium pipe 3 and make; And some layer capacitance screens 5 is to make by adding low resistance semiconductor band inside capacitance-voltage-distributing type insulating cylinder 4, outermost layer capacitance plate is with a lead-in wire 11 connection extraction, then is wound around about 5mm protective layer, and the material of this protective layer is similarly glass fibre and epoxy resin; The capacitance-voltage-distributing type insulating cylinder 4 wound puts into curing oven, and after solidification, from the flat is processed into given size shape.
Described above simply to illustrate that this utility model, it is understood that this utility model is not limited to above example, meets the various variants of this utility model thought all within protection domain of the present utility model.
Claims (6)
1. a big electric current glue leaching fiber dry-type capacitance type bushing shell for transformer, it is characterised in that described bushing shell for transformer includes metallic conductor, thin-wall aluminium pipe, capacitance-voltage-distributing type insulating cylinder, insulation full skirt and metal flange; Wherein, described thin-wall aluminium pipe is set in outside described metallic conductor, is provided with cooling oil duct between thin-wall aluminium pipe and metallic conductor, and thin-wall aluminium pipe is connected with metallic conductor isoelectric level; Described capacitance-voltage-distributing type insulation jacket casing is wrapped in outside described thin-wall aluminium pipe; Some layer capacitance screens it are provided with in capacitance-voltage-distributing type insulating cylinder; Described insulation full skirt is set in outside described capacitance-voltage-distributing type insulating cylinder, and described metal flange is fixing with capacitance-voltage-distributing type insulating cylinder to be connected.
2. big electric current glue according to claim 1 leaching fiber dry-type capacitance type bushing shell for transformer, it is characterized in that, the length of the described capacitance plate of some layers is according to the equal principle of capacitance, progressively shorten from inside to outside, form equidistant ladder poor, the outermost layer capacitance plate ejector by going between be arranged on metal flange.
3. big electric current glue according to claim 1 leaching fiber dry-type capacitance type bushing shell for transformer, it is characterised in that described capacitance-voltage-distributing type insulating cylinder is made up of glass fibre and epoxy resin.
4. big electric current glue according to claim 1 leaching fiber dry-type capacitance type bushing shell for transformer, it is characterised in that described capacitance plate is made up of low resistance semi-conductive tape.
5. big electric current glue according to claim 1 leaching fiber dry-type capacitance type bushing shell for transformer, it is characterised in that be provided with cooling oil duct between described thin-wall aluminium pipe and described metallic conductor.
6. big electric current glue according to claim 1 leaching fiber dry-type capacitance type bushing shell for transformer, it is characterised in that described insulation full skirt is made up of silicone rubber, is bonded in outside capacitance-voltage-distributing type insulating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002778.0U CN205303142U (en) | 2016-01-05 | 2016-01-05 | Heavy current glue soaks fibre dry -type electric capacity type transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002778.0U CN205303142U (en) | 2016-01-05 | 2016-01-05 | Heavy current glue soaks fibre dry -type electric capacity type transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205303142U true CN205303142U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620002778.0U Active CN205303142U (en) | 2016-01-05 | 2016-01-05 | Heavy current glue soaks fibre dry -type electric capacity type transformer bushing |
Country Status (1)
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| CN (1) | CN205303142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469958A (en) * | 2016-01-05 | 2016-04-06 | 北京中联科创高压电器有限公司 | High-current glue-impregnated fiber dry type capacitive type transformer bushing |
-
2016
- 2016-01-05 CN CN201620002778.0U patent/CN205303142U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469958A (en) * | 2016-01-05 | 2016-04-06 | 北京中联科创高压电器有限公司 | High-current glue-impregnated fiber dry type capacitive type transformer bushing |
| CN105469958B (en) * | 2016-01-05 | 2018-04-03 | 北京中联科创高压电器有限公司 | A kind of high current glue soaks fiber dry-type capacitance type bushing shell for transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |