CN102005272A - Equalizing ring provided with internal insulation structure - Google Patents

Equalizing ring provided with internal insulation structure Download PDF

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Publication number
CN102005272A
CN102005272A CN 201010573930 CN201010573930A CN102005272A CN 102005272 A CN102005272 A CN 102005272A CN 201010573930 CN201010573930 CN 201010573930 CN 201010573930 A CN201010573930 A CN 201010573930A CN 102005272 A CN102005272 A CN 102005272A
Authority
CN
China
Prior art keywords
ring
conducting
insulation material
grading ring
equalizing ring
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.)
Pending
Application number
CN 201010573930
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Chinese (zh)
Inventor
张德赛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUBEI XINDESAI INSULATION TECHNOLOGY Co Ltd
Original Assignee
HUBEI XINDESAI INSULATION TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HUBEI XINDESAI INSULATION TECHNOLOGY Co Ltd filed Critical HUBEI XINDESAI INSULATION TECHNOLOGY Co Ltd
Priority to CN 201010573930 priority Critical patent/CN102005272A/en
Publication of CN102005272A publication Critical patent/CN102005272A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an equalizing ring used for electric field adjustment in high voltage lines and high voltage power stations and electric appliances. The equalizing ring is a toroidal ring, a split ring or a runway ring, the internal side of the equalizing ring is made of an insulation material, and a conducting material covers the surface of the insulation material; the conducting material is made of a metal material or a conducting composite material; and the conducting composite material is conducting rubber or conducting plastic. The invention has the following advantages that the equalizing ring is formed by two parts, the insulation material is utilized in the internal side, the conducting material only covers the surface of the insulation material, and a part of metal material is replaced by the insulation material, therefore, the weight of the equalizing ring is reduced; the processing of a metalwork is more complex and consumes more energy relative to the insulation material, therefore, the energy sources are saved; the insulation material is utilized as a substrate of the equalizing ring and easily processed into various shapes, and an equalizing ring structure can be better designed; and the metal material covers the insulation material, which is simple and easy for operation.

Description

A kind of grading ring that interior insulation system is arranged
Technical field
The present invention relates to be used in a kind of high-tension line class and the high voltage generating station electric type grading ring that electric field is adjusted.
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 objective of the invention is at above-mentioned present situation, aim 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 object of the invention 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 present invention has the following advantages:
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 invention, 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 invention 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 present invention 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.
CN 201010573930 2010-12-01 2010-12-01 Equalizing ring provided with internal insulation structure Pending CN102005272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010573930 CN102005272A (en) 2010-12-01 2010-12-01 Equalizing ring provided with internal insulation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010573930 CN102005272A (en) 2010-12-01 2010-12-01 Equalizing ring provided with internal insulation structure

Publications (1)

Publication Number Publication Date
CN102005272A true CN102005272A (en) 2011-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010573930 Pending CN102005272A (en) 2010-12-01 2010-12-01 Equalizing ring provided with internal insulation structure

Country Status (1)

Country Link
CN (1) CN102005272A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102522162A (en) * 2011-12-16 2012-06-27 湖北鑫德赛绝缘技术有限公司 Disk-shaped suspension porcelain or glass composite insulator
CN105845288A (en) * 2016-05-26 2016-08-10 国网新疆电力公司乌鲁木齐供电公司 Indoor support insulator having three-element structure
CN106827490A (en) * 2017-03-24 2017-06-13 福建中网电气有限公司 A kind of high pressure pressure-equalizing device and its production technology

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201017734Y (en) * 2007-01-31 2008-02-06 李谋祥 Novel grading ring
CN201156453Y (en) * 2007-12-27 2008-11-26 中国西电电气股份有限公司 Equalized voltage ring construction
CN101523519A (en) * 2006-10-13 2009-09-02 Abb技术有限公司 A high voltage corona grading ring and a high voltage device comprising such ring
CN201307471Y (en) * 2008-12-12 2009-09-09 宁夏电力公司超高压电网运行分公司 Equalizing ring
CN101866729A (en) * 2010-06-09 2010-10-20 张涛 Intermediate grading ring and composite insulator with same
CN101866730A (en) * 2010-06-09 2010-10-20 张涛 Grading ring
CN201868164U (en) * 2010-12-01 2011-06-15 湖北鑫德赛绝缘技术有限公司 Voltage-equalizing ring with inner insulating structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101523519A (en) * 2006-10-13 2009-09-02 Abb技术有限公司 A high voltage corona grading ring and a high voltage device comprising such ring
CN201017734Y (en) * 2007-01-31 2008-02-06 李谋祥 Novel grading ring
CN201156453Y (en) * 2007-12-27 2008-11-26 中国西电电气股份有限公司 Equalized voltage ring construction
CN201307471Y (en) * 2008-12-12 2009-09-09 宁夏电力公司超高压电网运行分公司 Equalizing ring
CN101866729A (en) * 2010-06-09 2010-10-20 张涛 Intermediate grading ring and composite insulator with same
CN101866730A (en) * 2010-06-09 2010-10-20 张涛 Grading ring
CN201868164U (en) * 2010-12-01 2011-06-15 湖北鑫德赛绝缘技术有限公司 Voltage-equalizing ring with inner insulating structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102522162A (en) * 2011-12-16 2012-06-27 湖北鑫德赛绝缘技术有限公司 Disk-shaped suspension porcelain or glass composite insulator
CN105845288A (en) * 2016-05-26 2016-08-10 国网新疆电力公司乌鲁木齐供电公司 Indoor support insulator having three-element structure
CN106827490A (en) * 2017-03-24 2017-06-13 福建中网电气有限公司 A kind of high pressure pressure-equalizing device and its production technology

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Application publication date: 20110406