CN204407114U - Double-spiral structure transition resistance - Google Patents
Double-spiral structure transition resistance Download PDFInfo
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- CN204407114U CN204407114U CN201520082942.9U CN201520082942U CN204407114U CN 204407114 U CN204407114 U CN 204407114U CN 201520082942 U CN201520082942 U CN 201520082942U CN 204407114 U CN204407114 U CN 204407114U
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- transition resistance
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Abstract
Double-spiral structure transition resistance disclosed in the utility model, comprises a fixed leg and transition resistance element, and described transition resistance element is in the shape of a spiral around on the outer surface of described fixed leg.Erect-position space is little when mounted for double-stranded transition resistance of the present utility model, and thermal diffusivity is good.
Description
Technical field
The utility model relates to sub-connecting switch of transformer technical field, particularly a kind of double-spiral structure transition resistance of SF6 vacuum on-load operation switch switch core inter-stage.
Background technology
Shunting switch is the tapping by changing connection transformer, changes the turn ratio of the primary and secondary winding of transformer, thus reaches the object changing transformer output voltage.
SF6 vacuum on-load operation switch is a kind of dry-type on-load tap changer, and switching over fuse is enclosed in drum ladle, is full of SF6 gas in container, and the insulating properties of dependence SF6 gas obtains the insulation in switch core between each conductor.
Need to connect through transition resistance, to limit circulating current between switching over fuse carries out switching moment transformer two tapping.But the large and poor radiation in current transition resistance erect-position space.
Utility model content
Technical problem to be solved in the utility model is the technical problem of the large and poor radiation in the erect-position space for existing transition resistance and provides the double-stranded transition resistance that a kind of erect-position space is little, thermal diffusivity is good.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
Double-stranded transition resistance, comprises a fixed leg and transition resistance element, and described transition resistance element is in the shape of a spiral around on the outer surface of described fixed leg.
In a preferred embodiment of the present utility model, described transition resistance element adopts resistance wire coiling in the shape of a spiral.
In a preferred embodiment of the present utility model, be configured with helicla flute at the outer surface of described fixed leg, described transition resistance element is in the shape of a spiral around in described helicla flute.
In a preferred embodiment of the present utility model, the upper and lower end face of described fixed leg is provided with the upper and lower erection column that diameter is less than described fixed leg outer surface.
Owing to have employed technical scheme as above, erect-position space is little when mounted for double-stranded transition resistance of the present utility model, and thermal diffusivity is good.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of the SF6 vacuum on-load operation switch switch core three-phase transition resistance using double-stranded transition resistance of the present utility model.
Fig. 2 is the structural representation of the 1 phase transition resistance assembly module using double-stranded transition resistance of the present utility model.
Fig. 3 is the structural representation of fixed leg in double-stranded transition resistance of the present utility model.
Fig. 4 is the structural representation of double-stranded transition resistance of the present utility model.
Embodiment
See Fig. 3 and Fig. 4, the double-stranded transition resistance 100 provided in figure, comprise fixed leg 110 and transition resistance element 120, especially see Fig. 3, fixed leg 110 adopts insulating material to make, be configured with helicla flute 111 at the outer surface of fixed leg 110, the upper and lower end face of fixed leg 110 is provided with the upper and lower erection column 112,113 that diameter is less than fixed leg 110 outer surface.
Calculate the transition resistance silk of diameter and length by equipment requirement, coiled forms transition resistance element 120, then by transition resistance element 120 in the shape of a spiral around in the helicla flute 111 of the outer surface of fixed leg 110.
See Fig. 2, each phase transition resistance assembly module comprises train wheel bridge 210, lower plate 220 and some joint pins 230 and some double-stranded transition resistances 100 assemble, train wheel bridge 210 is connected by some joint pins 230 with lower plate 220, and in some double-stranded transition resistances 100, the upper and lower erection column 112,113 of fixed leg 110 is arranged in the upper and lower transition resistance installing hole 211,221 on train wheel bridge 210, lower plate 220.
According to different resistance wire data, the transition resistance element 120 in some double-stranded transition resistances 100 can form the form of serial or parallel connection.
See Fig. 1, the transition resistance assembly module of each phase is individual components, and three-phase transition resistance assembly module is combined into cylindric by 120 °, be axially disposed within switching over fuse top, compact conformation, erect-position space is little, double-spiral structure is arranged, is conducive to the heat radiation of resistance wire.
Claims (4)
1. double-stranded transition resistance, is characterized in that, comprises a fixed leg and transition resistance element, and described transition resistance element is in the shape of a spiral around on the outer surface of described fixed leg.
2. double-stranded transition resistance as claimed in claim 1, is characterized in that, described transition resistance element adopts resistance wire coiling in the shape of a spiral.
3. double-stranded transition resistance as claimed in claim 2, is characterized in that, is configured with helicla flute at the outer surface of described fixed leg, and described transition resistance element is in the shape of a spiral around in described helicla flute.
4. double-stranded transition resistance as claimed in claim 1, is characterized in that, the upper and lower end face of described fixed leg is provided with the upper and lower erection column that diameter is less than described fixed leg outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520082942.9U CN204407114U (en) | 2015-02-05 | 2015-02-05 | Double-spiral structure transition resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520082942.9U CN204407114U (en) | 2015-02-05 | 2015-02-05 | Double-spiral structure transition resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204407114U true CN204407114U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520082942.9U Active CN204407114U (en) | 2015-02-05 | 2015-02-05 | Double-spiral structure transition resistance |
Country Status (1)
| Country | Link |
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| CN (1) | CN204407114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148504A (en) * | 2019-06-13 | 2019-08-20 | 上海久能机电制造有限公司 | A kind of transformer neutral point DC magnetic biasing inhibition inductive resistance device |
-
2015
- 2015-02-05 CN CN201520082942.9U patent/CN204407114U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148504A (en) * | 2019-06-13 | 2019-08-20 | 上海久能机电制造有限公司 | A kind of transformer neutral point DC magnetic biasing inhibition inductive resistance device |
| CN110148504B (en) * | 2019-06-13 | 2024-02-27 | 上海久能机电制造有限公司 | Transformer neutral point DC magnetic bias suppression inductance resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |