CN202454350U - Ground wire compound insulator specially for melting ice - Google Patents
Ground wire compound insulator specially for melting ice Download PDFInfo
- Publication number
- CN202454350U CN202454350U CN2011205359900U CN201120535990U CN202454350U CN 202454350 U CN202454350 U CN 202454350U CN 2011205359900 U CN2011205359900 U CN 2011205359900U CN 201120535990 U CN201120535990 U CN 201120535990U CN 202454350 U CN202454350 U CN 202454350U
- Authority
- CN
- China
- Prior art keywords
- ground wire
- ice
- insulator
- insulation
- electrode
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to the field of ground wire insulators, in particular to a ground wire compound insulator specially for melting ice, which is used for support and insulation of an overhead ground wire of a high-voltage transmission line. The ground wire compound insulator comprises an insulation piece, connecting armour clamps and electrodes, wherein the electrodes include an upper electrode and a lower electrode, the connecting armour clamps are arranged at two ends of the insulation piece, the electrodes are fixed on the armour clamps, and the insulation piece is of a compound umbrella structure with two large ends and a small middle. The ground wire compound insulator is of a suspension type or tension resistance type; a silicon rubber layer is used as an outer insulation layer of the insulation piece, and a reasonable discharge gap is formed by the cross position of the upper electrode and the lower electrode. The ground wire compound insulator has the advantages of good dirt resistance and high withstand voltage since silicon rubber is used as an insulating material; and the insulation piece is of an umbrella structure with two large ends and the small middle, thus electrical property and icing withstand voltage of the insulator are increased, the discharge of an insulation body of icing flashover can not be caused under the ice-melting condition; and requirements of ice melting and lightning preventing are met through designing a reasonable discharge distance.
Description
Technical field
The utility model relates to ground wire insulator field, relates in particular to a kind of special-purpose ground wire composite insulator of ice-melt of support and insulation of the overhead ground wire that is used for ultra-high-tension power transmission line, is specially adapted to the deicing processes of overhead ground wire.
Background technology
Overhead ground wire is the important component part of ultra-high-tension power transmission line, has the important function of lightning protection, communication and maintenance line three-phase equilibrium.
The electric power line ice-covering thickness value of overstepping the extreme limit will cause that circuit falls tower, cause mains breakdown, cause catastrophic effect, and to this, the research of phase conductor de-icing technology and use comparatively generally but also relatively lags behind for the ground wire deicing The Application of Technology.
When the serious icing of ground wire; Especially when iron tower both sides ground wire or two ground wire ice covering thickness of homonymy differed greatly, the unbalanced moments aggravation that tower head receives was when tower head can not bear this load; The weak element of tower head begins to damage distortion, finally causes ground wire to drop or shaft tower collapses; The ground wire icing is thick more, and the suffered tension force of ground wire is big more, when tension force surpasses the pull-off force of ground wire, promptly causes the fracture of ground wire.
Lead, during the equal icing of ground wire, if only phase conductor is carried out ice-melt, then after the phase conductor ice-melt; It highly rises, make lead, the distance between ground wire reduces, when lead, distance between ground wire is less than safe distance the time; Phase conductor discharges to ground wire, not only produces line-to-ground fault, also is prone to cause the ground wire broken string.
The used insulating part of existing ground wire composite insulator is a porcelain spare, and porcelain insulating spare is not only heavier, and is damaged easily, but also punch-through can take place; Tradition ground wire insulator is single umbrella design, has limited the icing withstand voltage; Ice-melt and lightning protection have alternative to the requirement of ground wire dielectric strength; Consider from the ice-melt angle; The dielectric strength of ground wire is high more good more; And the raising lightning protection effect requires the clearance for insulation of ground wire before thunder and lightning takes place, can reliably to puncture, and the clearance for insulation of existing ground wire composite insulator can't satisfy the double requirements of ice-melt and lightning protection.
The utility model content
The purpose of the utility model is to provide that resistant matter is soft, withstand voltage is high, satisfies the special-purpose ground wire composite insulator of ice-melt of ice-melt and lightning protection double requirements.
For realizing above-mentioned purpose, the technical scheme that the utility model adopted is: the special-purpose ground wire composite insulator of ice-melt is characterized in that: comprise insulating part, connect gold utensil, electrode; Electrode is divided into upper and lower electrode, connects the two ends that gold utensil is positioned at insulating part, and electrode is fixed in and connects on the gold utensil; Described insulating part is the little compound beveled structure in big centre, two ends.
As the further improvement to the utility model, the special-purpose ground wire composite insulator of described ice-melt is suspension type or strain insulator formula.
As the further improvement to the utility model, the external insulation layer of described insulating part is a silastic-layer.
As the further improvement to the utility model, the crossover location of described upper and lower electrode constitutes rational discharging gap.
The beneficial effect of the utility model: adopt silicon rubber as the external insulation material, anti-pollution characteristic is good, withstand voltage is high; Insulating part adopts the little beveled structure in big centre, two ends two, improves electric property and the icing withstand voltage of insulator, guarantees that the insulating body that the icing flashover under the ice-melt condition, do not occur discharges; Through arcing distance reasonable in design, satisfy ice-melt and lightning protection double requirements.
Description of drawings
Fig. 1 is the structure chart of the hanging type ground wire composite insulator of the utility model;
Fig. 2 is the structure chart of the strain insulator formula ground wire composite insulator of the utility model;
Wherein, 1 full skirt, 2 connect gold utensil, 3 top electrodes, 4 bottom electrodes, 5 discharging gaps, 6 insulating parts, 7 gold utensil covers, 8 sheaths.
Embodiment
Figure is the preferred embodiment of the utility model, below in conjunction with accompanying drawing the utility model is further described: wherein, 1 full skirt, 2 connect gold utensil, 3 top electrodes, 4 bottom electrodes, 5 discharging gaps, 6 insulating parts, 7 gold utensil covers, 8 sheaths.
According to Fig. 1 or Fig. 2, the special-purpose ground wire composite insulator of ice-melt is characterized in that: comprise insulating part 6, connect gold utensil 2, electrode; Electrode is divided into top electrode 3, bottom electrode 4, connects the two ends that gold utensil 2 is positioned at insulating part 6, and electrode is fixed in and connects on the gold utensil 2; Described insulating part 6 is the little compound beveled structure in big centre, two ends.
The compound beveled structure of insulating part 6 is made up of a plurality of full skirts 1, forms composite construction.Insulating part 6 is made up of full skirt 1 and sheath 8, also is provided with plug (not shown) in the insulating part 6, and the external insulation layer of insulating part 6 is a silastic-layer.Compare with traditional ground wire insulator, adopt silicon rubber as the external insulation material, there is hydrophobicity on the surface, and anti-pollution characteristic is good, and full skirt 1 is soft flexible, and cracky does not also make the composite insulator of the utility model have the high advantage of withstand voltage.The beveled structure that big centre, the insulating part 6 employing two ends of the utility model two is little improves electric property and the icing withstand voltage of insulator, guarantees that the insulating body that the icing flashover under the ice-melt condition, do not occur discharges.
The special-purpose ground wire composite insulator of ice-melt is divided into suspension type (Fig. 1) or strain insulator formula (Fig. 2) ground wire composite insulator.
The crossover location of upper and lower electrode constitutes rational discharging gap 5.On the basis that big quantity research calculates and tests, rationally increase discharging gap, guarantee that the ground wire clearance for insulation can tolerate the induced voltage that is produced by lead when normal operation; Can tolerate DC ice melting voltage; Do not reduce the lightning protection properties of ground wire.
The foregoing description does not limit the utility model in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drops on the protection range of the utility model.
Claims (4)
1. the special-purpose ground wire composite insulator of ice-melt is characterized in that: comprise insulating part, connect gold utensil, electrode; Electrode is divided into upper and lower electrode, connects the two ends that gold utensil is positioned at insulating part, and electrode is fixed in and connects on the gold utensil; Described insulating part is the little compound beveled structure in big centre, two ends.
2. the special-purpose ground wire composite insulator of ice-melt according to claim 1, it is characterized in that: described ground wire composite insulator is suspension type or strain insulator formula.
3. the special-purpose ground wire composite insulator of ice-melt according to claim 1 and 2, it is characterized in that: the external insulation layer of described insulating part is a silastic-layer.
4. the special-purpose ground wire composite insulator of ice-melt according to claim 3, it is characterized in that: the crossover location of described upper and lower electrode constitutes discharging gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205359900U CN202454350U (en) | 2011-12-20 | 2011-12-20 | Ground wire compound insulator specially for melting ice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205359900U CN202454350U (en) | 2011-12-20 | 2011-12-20 | Ground wire compound insulator specially for melting ice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454350U true CN202454350U (en) | 2012-09-26 |
Family
ID=46870192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205359900U Expired - Lifetime CN202454350U (en) | 2011-12-20 | 2011-12-20 | Ground wire compound insulator specially for melting ice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180689A (en) * | 2017-03-15 | 2017-09-19 | 国网浙江省电力公司金华供电公司 | A kind of insulator lightning protection device in regulating discharging gap |
-
2011
- 2011-12-20 CN CN2011205359900U patent/CN202454350U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180689A (en) * | 2017-03-15 | 2017-09-19 | 国网浙江省电力公司金华供电公司 | A kind of insulator lightning protection device in regulating discharging gap |
| CN107180689B (en) * | 2017-03-15 | 2019-01-29 | 国网浙江省电力公司金华供电公司 | A kind of insulator lightning protection device in regulating discharging gap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104952562A (en) | Anti-thunder and anti-icing pin type composite insulator for 10kV power transmission line | |
| CN106098264A (en) | A kind of 10kV Multifunctional disaster prevention evil insulator and preparation method | |
| CN101697299B (en) | Lightning protection insulator for insulated conductor of overhead line | |
| CN201170978Y (en) | Lightning protection post column insulator | |
| CN107481821A (en) | A kind of anti-thunder insulator | |
| CN104779019B (en) | Lightning protection anti-ice-flashing composite insulator | |
| CN205943611U (en) | Take pin type composite insulator for 10kV transmission line of voltage -sharing cover | |
| CN105788775A (en) | Needle type composite insulator for 10 kV transmission line | |
| CN202650738U (en) | Electric discharge clamping porcelain insulator | |
| CN202454350U (en) | Ground wire compound insulator specially for melting ice | |
| CN107301907A (en) | A kind of anti-icing anti-thunder insulator | |
| CN204760146U (en) | Anti -icing suspension type composite insulator of lightning protection for 10kV transmission line | |
| CN207302760U (en) | A kind of anti-icing anti-thunder insulator | |
| CN205862897U (en) | A kind of 10kV Multifunctional disaster prevention evil insulator | |
| CN2713598Y (en) | Lightning arrester type insulator | |
| CN201893186U (en) | Windproof inclined composite insulator | |
| CN104952560A (en) | Anti-thunder and anti-icing suspension type composite insulator for 10 kV transmission line | |
| CN205723018U (en) | Lightning protection pillar insulator | |
| CN104752009B (en) | A kind of anti-icing insulator of lightning protection | |
| CN203481768U (en) | Spherical fixed outer-gap lightning arrester for 10kV system insulating overhead line tension rod | |
| CN208706339U (en) | A kind of lightning protection column type porcelain insulator | |
| CN203150331U (en) | Ground wire composite insulator applicable to overhead ground wire deicing | |
| CN201514819U (en) | Lightning protection insulator for insulated conductor for overhead line | |
| CN204257302U (en) | A kind of novel arrester with gaps formula line insulator | |
| CN101488384B (en) | Insulator for 24V vacuum circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |