CN201868164U - Voltage-equalizing ring with inner insulating structure - Google Patents
Voltage-equalizing ring with inner insulating structure Download PDFInfo
- Publication number
- CN201868164U CN201868164U CN2010206427436U CN201020642743U CN201868164U CN 201868164 U CN201868164 U CN 201868164U CN 2010206427436 U CN2010206427436 U CN 2010206427436U CN 201020642743 U CN201020642743 U CN 201020642743U CN 201868164 U CN201868164 U CN 201868164U
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- voltage
- insulating material
- ring
- equalizing ring
- grading ring
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Abstract
The utility model relates to a high-voltage line and a voltage-equalizing ring for electric field adjustment in electric appliances of a high-voltage power station. The voltage-equalizing ring is ring-shaped, opened-ring-shaped or runway-ring-shaped; the inner part of the voltage-equalizing ring is made of an insulating material; and the surface of the insulating material is covered by a conducting material. The conducting material is a metal material or a conducting composite material. The conducting composite material is conducing rubber or conducting plastic. The utility model has the advantages that the voltage-equalizing ring consists of two parts, the inner part of the voltage-equalizing ring is made of the insulating material, only the surface of the insulating material is covered by the conducting material, and a part of the metal material is replaced with the insulating material, so that the weight of the voltage-equalizing ring is reduced; compared with the insulating material, the processing of a metal piece is more complex, and the energy consumption is large, therefore, energy can be saved; the insulating material is adopted as a matrix of the voltage-equalizing ring, and as the insulating material is easily processed into various shapes, a better voltage-equalizing ring structure can be designed; and the operation for covering the metal material on the insulating material is simple and easy.
Description
Technical field
The utility model relates to and is used for the grading ring that electric field is adjusted in a kind of high-tension line class and the high voltage generating station electric type.
Background technology
In the insulation system of high-tension apparatus, the electric field great majority are uneven.If internal field is very strong, then under not too high voltage, partial discharge will occurs, even cause the puncture of insulation system.Therefore the Electric Field Distribution of need taking measures to improve reduces local too high field intensity, to improve the overall dielectric intensity of insulation system, and the adjustment of Here it is electric field, grading ring is one of method of adjusting of electric field.Grading ring can be divided into insulator equalizing ring, high voltage generating station electrical equipment grading ring and high-tension testing apparatus grading ring etc. by the purposes difference.The importance of grading ring is described with instantiation below.
For example in the high-voltage strut insulator, several post insulator 3 series connection commonly used are assembled into insulator post as shown in Figure 4.After several post insulator series connection, along the voltage skewness (see figure 5) on surface, abscissa represents that voltage distributes among Fig. 5, and solid line is the virtual voltage distributing line, dotted line is the ideal distribution of voltage line, so flashover voltage will not rise with the increase of insulator height.In this case, general normal employing insulator post 3 tops add grading ring 4 and carry out electric field adjustment (see figure 6), and it has weakened the field intensity of electrode edge; Also owing to the capacitance current of flowing through between grading ring and dielectric surface, part has compensated the capacitive earth current of medium, makes relatively evenly (see figure 7) of surface voltage distribution, thereby has improved flashover voltage.Abscissa represents that voltage distributes among Fig. 7, and solid line is the virtual voltage distributing line, and dotted line is the ideal distribution of voltage line.
Again for example in line insulator, by its construction profile branch, line insulator can be divided into two kinds of dish type and clavates.Can use on the transmission line of any electric pressure behind the cap and pin insulator serial connection bunchiness, be to use the widest a kind of insulator in the high-tension line.Because insulator string voltage skewness is too high near voltage drop on first insulator of lead, may produce corona.It also can produce the interference communications circuit nitrogen oxide corrosion annex and pollute insulator surface, is unallowed so produce corona under the operating voltage.After grading ring 4 is adopted as shown in Figure 8 in line insulator 6 lower ends, increased the electric capacity of insulator to lead, can improve voltage and distribute.Among the figure, also have lead 5, iron tower 7.
The rod insulator insulator is divided into two kinds of porcelain and composite insulators again, and porcelain rod insulator insulator has the gold utensil and the middle gold utensil few in number at two up and down, and the composite rod suspension insulator has only the gold utensil at two up and down.The interelectrode capacitance of these two kinds of insulators is much smaller than the porcelain of equal length and the electric capacity of glass suspension insulator string, therefore their electric field problem of non-uniform is very distinct issues, so more need adopt grading ring 4 as shown in Figure 9 at the upper and lower side of composite rod suspension insulator 8.
Grading ring can be divided into aluminum grading ring, aluminium alloy grading ring and stainless steel grading ring etc. by the difference of material.The shape of grading ring is varied, but its basic configuration generally can be divided into annular, open annular and runway shape (seeing Figure 10,11,12), and 2-1 is a metal material among the figure.Grading ring belongs to a kind of accessory, is a kind of in the electric armour clamp, along with the development of supergrid and extra-high voltage grid, the structure of grading ring becomes increasingly complex, diameter is increasing, and weight is more and more heavier, thereby brings great inconvenience for optimal design, installation, operation maintenance and replacing etc.
Traditional grading ring is all made by metal material, and in fact work only be the surface portion of metal material.
Summary of the invention
The purpose of this utility model is at above-mentioned present situation, aims to provide a kind of a kind of grading ring that interior insulation system is arranged light, that cost is low.
The implementation of the utility model purpose is, a kind of grading ring that interior insulation system is arranged is annular, open annular or runway shape ring, and the inside of grading ring is insulating material 1, the surface coverage electric conducting material 2 of insulating material 1.
The utlity model has following advantage:
1, be made up of two parts, the inner insulating material that adopts only at its surface coverage electric conducting material, has substituted a part of metal material with insulating material, has alleviated the weight of grading ring;
2, relative insulating material, the processing of metalwork is complicated, and energy consumption is big, so can save the energy;
3, adopt insulating material to make the matrix of grading ring, insulating material is processed into different shape easily, can design better grading ring structure;
4, the covering metal material is simple on insulating material.
Description of drawings
Fig. 1,2,3 is the structural representation of annular of the present utility model, open annular and runway shape,
Fig. 4 is the insulation column structural representation that does not have grading ring,
Fig. 5 is the voltage distribution map that does not have under the insulation column situation of grading ring,
Fig. 6 is the insulation column structural representation that has added grading ring,
Fig. 7 is the voltage distribution map that has added under the insulation column situation of grading ring,
Fig. 8 is the cap and pin insulator string structure schematic diagram that has added grading ring,
Fig. 9 is for the composite rod suspension insulator structural representation of grading ring,
Figure 10,11,12 is the structural representation of existing annular, open annular and runway shape grading ring.
Embodiment
With reference to Fig. 1,2,3, grading ring of the present utility model is annular, open annular or runway shape ring, and the inside of grading ring is insulating material 1, the surface coverage electric conducting material 2 of insulating material.
Electric conducting material 2 is metal material or conducing composite material.Conducing composite material is conductive rubber or conductive plastics.
The utility model has substituted a part of metal material with insulating material, has alleviated the weight of grading ring; Price is low;
Adopt insulating material to make the matrix of grading ring, insulating material is processed into different shape easily, can design better grading ring structure; It is simple to cover metal material on insulating material.
Claims (3)
1. the grading ring that interior insulation system is arranged is characterized in that inner be insulating material, the surface coverage electric conducting material of insulating material.
2. a kind of grading ring that interior insulation system is arranged according to claim 1 is characterized in that electric conducting material (2) is metal material or conducing composite material.
3. a kind of grading ring that interior insulation system is arranged according to claim 1 is characterized in that conducing composite material is conductive rubber or conductive plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206427436U CN201868164U (en) | 2010-12-01 | 2010-12-01 | Voltage-equalizing ring with inner insulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206427436U CN201868164U (en) | 2010-12-01 | 2010-12-01 | Voltage-equalizing ring with inner insulating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868164U true CN201868164U (en) | 2011-06-15 |
Family
ID=44139313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206427436U Expired - Fee Related CN201868164U (en) | 2010-12-01 | 2010-12-01 | Voltage-equalizing ring with inner insulating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005272A (en) * | 2010-12-01 | 2011-04-06 | 湖北鑫德赛绝缘技术有限公司 | Equalizing ring provided with internal insulation structure |
| CN103018610A (en) * | 2012-12-19 | 2013-04-03 | 桂林电力电容器有限责任公司 | Lightweight equalizing ring for test room |
-
2010
- 2010-12-01 CN CN2010206427436U patent/CN201868164U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005272A (en) * | 2010-12-01 | 2011-04-06 | 湖北鑫德赛绝缘技术有限公司 | Equalizing ring provided with internal insulation structure |
| CN103018610A (en) * | 2012-12-19 | 2013-04-03 | 桂林电力电容器有限责任公司 | Lightweight equalizing ring for test room |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20171201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |