CN203150331U - Ground wire composite insulator applicable to overhead ground wire deicing - Google Patents
Ground wire composite insulator applicable to overhead ground wire deicing Download PDFInfo
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- CN203150331U CN203150331U CN 201220708507 CN201220708507U CN203150331U CN 203150331 U CN203150331 U CN 203150331U CN 201220708507 CN201220708507 CN 201220708507 CN 201220708507 U CN201220708507 U CN 201220708507U CN 203150331 U CN203150331 U CN 203150331U
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- ground wire
- full skirt
- insulating part
- protective cover
- composite insulator
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Abstract
The utility model discloses a ground wire composite insulator applicable to overhead ground wire deicing, which comprises an electrode, an insulator, an upper end connection fitting and a lower end connection fitting, wherein the upper end connection fitting and the lower connection fitting are located at the upper end and the lower end of the insulator respectively, the insulator and the upper end connection fitting are provided with a protective cover therebetween, the electrode is located between the insulator and the lower end connection fitting, the electrode and the protective cover form a protective gap connected with the insulator in parallel, the distance of the protective gap is 50mm-80mm. The ground wire composite insulator disclosed by the utility model can enable an overhead ground wire and a tower to have enough electrical insulation therebetween, and bear the power supply voltage of overhead ground wire deicing reliably.
Description
Technical field
The utility model relates to ground wire insulator field, particularly is applicable to the ground wire composite insulator of overhead ground wire ice-melt.
Background technology
For realizing effective insulation of overhead ground wire and shaft tower, need the ground wire insulator be installed at the cat head of shaft tower, both can cut off between ground wire and the ground wire, the electric path between ground wire and the earth, induced current and the electric energy loss thereof of avoiding overhead ground wire to cause because of the coupling of electromagnetic induction and static, the also advantage for realizing that the overhead ground wire ice-melt provides.
Ground wire insulator commonly used at present is plain edition ground wire ceramic insulator, and not only quality is heavy, and is damaged easily, also punch-through can take place.Though can realize effective insulation of overhead ground wire and shaft tower, when heavy icing area will be realized ground wire deicing, but run into some technical problems.Common ground wire insulator is generally single umbrella design, and its icing withstand voltage is less, can not satisfy the supply voltage requirement of deicing device.
According to existing operating experience, every kilometer about 40V of ground wire induced voltage, ground wire is provided with earth point every 20-30km, and then ground wire induced voltage scope is between 800-1200V; Ground wire deicing adopts the DC ice melting mode mostly, and ice-melt voltage is 15-20kV.So ground wire insulator parallel connection gaps size should be set by tolerance ice-melt voltage.Consider adverse weather conditions such as icing, the distance between the upper/lower electrode of parallel connection gaps should suitably be amplified.
As seen; need design the ground wire insulator that is applicable to the ice formation; should guarantee that the ground wire insulator has enough compressive resistances under the icing situation; design and develop corresponding protection in parallel gap in conjunction with the body of ground wire insulator again; make the crack can protect the ground wire insulator body to avoid electric arc and damage, and direct current (interchange) discharge voltage of protection gap in parallel under the icing situation should be greater than overhead ground wire ice-melt supply voltage.But present ground wire insulator structure such as the disclosed application number of Chinese utility model patent are that 201120535990.0 " ice-melt special-purpose ground wire composite insulator " can not satisfy above-mentioned requirements.
The utility model content
Technical problem to be solved in the utility model just provides the ground wire composite insulator that is applicable to the overhead ground wire ice-melt, and making has enough electric insulations between overhead ground wire and the shaft tower, and reliably bears the supply voltage of overhead ground wire ice-melt.
For solving the problems of the technologies described above; the utility model is achieved through the following technical solutions: a kind of ground wire composite insulator that is applicable to the overhead ground wire ice-melt; the upper end that comprise electrode, insulating part, lays respectively at the insulating part upper and lower side connects gold utensil and is connected gold utensil with the lower end; it is characterized in that: described insulating part is connected with the upper end and is provided with protective cover between the gold utensil; described electrode is connected between the gold utensil with the lower end at insulating part; described electrode constitutes the protection gap in parallel with insulating part with protective cover, and the distance in this protection gap is 50mm ~ 80mm.
Protective cover described in the utility model is umbrella shape, and the external diameter of the lower end of this protective cover is 200mm ~ 400mm, and the thickness of this protective cover is 0.25mm ~ 1mm.
Electrode described in the utility model by insulating part be connected with the lower end stretch out between the gold utensil and upwards bending be dihedral.
Insulating part described in the utility model comprises sheath and full skirt unit, and described full skirt unit from top to bottom array is arranged on the sheath.
Full skirt described in the utility model unit comprises a big full skirt and is positioned at a little full skirt of big full skirt below that the external diameter of described big full skirt lower end is greater than the external diameter of umbellule skirt lower end.
Full skirt described in the utility model unit comprises a big full skirt and is positioned at two little full skirts of big full skirt below that the external diameter of described big full skirt lower end is greater than the external diameter of umbellule skirt lower end.
Compared with prior art, the utility model technology has following beneficial effect:
The utility model both can be used for the overhead ground wire insulation of general circuit, be applicable to that also heavy icing area needs the overhead ground wire of ice-melt, gap by protective cover and electrode arranges, and the setting of full skirt unit in the insulating part, can guarantee to tolerate existing overhead ground wire ice-melt voltage, can not cause the problem of ground wire insulator flashover or gap discharge when icing; By the setting of protective cover, then need not to ice and season the overhead ground wire insulator is handled, directly form overhead ground wire ice-melt loop, insulated static wire is applied ice-melt voltage, easy to operate.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one ground wire composite insulator;
Fig. 2 is the structural representation of the utility model embodiment two ground wire composite insulators.
Among the figure: 1, insulating part; 11, big full skirt; 12, little full skirt; 13, sheath; 2, electrode; 3, protective cover; 41, the upper end connects gold utensil; 42, the lower end connects gold utensil.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment one
The ground wire composite insulator that is applicable to the overhead ground wire ice-melt as shown in Figure 1; the upper end that comprise electrode 2, insulating part 1, lays respectively at insulating part 1 upper and lower side connects gold utensil 41 and is connected gold utensil 42 with the lower end; insulating part 1 is connected with the upper end and is provided with protective cover 3 between the gold utensil 41; electrode 2 is connected between the gold utensil 42 at insulating part 1 with the lower end; electrode 2 and protective cover 3 constitutes the protection gap in parallel with insulating part 1; the distance in this protection gap is 60mm, also can select in the scope of 50mm ~ 80mm.
The protective cover 3 of present embodiment is umbrella shape (or hat type); the external diameter of the lower end of this protective cover 3 is 200mm ~ 400mm; protective cover 3 tops adopt aluminium alloy calendering sealing to constitute; aluminium-alloy pipe is adopted in the lower edge of umbrella shape protective cover 3; thickness of aluminum alloy is 0.8mm, also can select in the scope of 0.25mm ~ 1mm, and the aluminium-alloy pipe equivalent diameter is 15mm; also can select in the scope of 8mm ~ 20mm, embedded crimping or welding are adopted in top and lower edge.
Electrode 2 by insulating part 1 be connected with the lower end stretch out between the gold utensil 42 and upwards bending be dihedral, the equivalent diameter of electrode 2 is zinc-plated round steel or the band steel of 12mm, also can select the scope of 8mm ~ 14mm in, is fixed on the lower end connection gold utensil 42 by anchor ear.This electrode 2 is relative to protective cover 3 positions to form the protection gap.
The insulating part 1 of present embodiment comprises sheath 13 and full skirt unit, and full skirt unit from top to bottom array is arranged on the sheath 13.The full skirt unit of present embodiment comprises a big full skirt 11 and is positioned at two umbellule skirts 12 of big full skirt 11 belows that the external diameter of big full skirt 11 lower ends is greater than the external diameter of umbellule skirt 12 lower ends.Namely interleave two umbellule skirts 12 at big full skirt 11, each full skirt cellular construction height is got 300mm ~ 600mm, and creepage distance is at 900mm ~ 1800mm, and insulating part 1 DC break down voltage is not less than 30kV under the icing situation to satisfy.
Present embodiment is by the setting of protective cover 3, electrode 2 and insulating part 1; can make the icing DC break down voltage be not less than 30kV; electrode 2 and protective cover 3 constitute protection in parallel gaps the icing situation direct-current discharge voltage be not less than 15kV, protective cover 3 also has the effect that protection clearance electrode, anti-birds droppings pollute insulating part 1 and reduce the icing accumulation concurrently.
Embodiment two
Be illustrated in figure 2 as the embodiment two of the utility model ground wire composite insulator, present embodiment two and embodiment with difference be: the full skirt unit comprises a big full skirt 11 and is positioned at a umbellule skirt 12 of big full skirt 11 belows that the external diameter of big full skirt 11 lower ends is greater than the external diameter of umbellule skirt 12 lower ends.Namely interleave a umbellule skirt 12 at big full skirt 11, each full skirt cellular construction height is got 300mm ~ 600mm, and creepage distance is at 900mm ~ 1800mm, can satisfy the requirement that insulating part 1 DC break down voltage under the icing situation is not less than 30kV equally.
Execution mode of the present utility model is not limited thereto; according to foregoing of the present utility model; utilize ordinary skill knowledge and the customary means of this area; do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite; the utility model can also be made modification, replacement or the change of other various ways, all drops within the utility model rights protection scope.
Claims (6)
1. ground wire composite insulator that is applicable to the overhead ground wire ice-melt; the upper end that comprise electrode, insulating part, lays respectively at the insulating part upper and lower side connects gold utensil and is connected gold utensil with the lower end; it is characterized in that: described insulating part is connected with the upper end and is provided with protective cover between the gold utensil; described electrode is connected between the gold utensil with the lower end at insulating part; described electrode constitutes the protection gap in parallel with insulating part with protective cover, and the distance in this protection gap is 50mm ~ 80mm.
2. the ground wire composite insulator that is applicable to the overhead ground wire ice-melt according to claim 1, it is characterized in that: described protective cover is umbrella shape, and the external diameter of the lower end of this protective cover is 200mm ~ 400mm, and the thickness of this protective cover is 0.25mm ~ 1mm.
3. the ground wire composite insulator that is applicable to the overhead ground wire ice-melt according to claim 2 is characterized in that: described electrode by insulating part be connected with the lower end stretch out between the gold utensil and upwards bending be dihedral.
4. according to each described ground wire composite insulator that is applicable to the overhead ground wire ice-melt of claim 1-3, it is characterized in that: described insulating part comprises sheath and full skirt unit, and described full skirt unit from top to bottom array is arranged on the sheath.
5. the ground wire composite insulator that is applicable to the overhead ground wire ice-melt according to claim 4, it is characterized in that: described full skirt unit comprises a big full skirt and is positioned at a little full skirt of big full skirt below that the external diameter of described big full skirt lower end is greater than the external diameter of umbellule skirt lower end.
6. the ground wire composite insulator that is applicable to the overhead ground wire ice-melt according to claim 4, it is characterized in that: described full skirt unit comprises a big full skirt and is positioned at two little full skirts of big full skirt below that the external diameter of described big full skirt lower end is greater than the external diameter of umbellule skirt lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708507 CN203150331U (en) | 2012-12-18 | 2012-12-18 | Ground wire composite insulator applicable to overhead ground wire deicing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708507 CN203150331U (en) | 2012-12-18 | 2012-12-18 | Ground wire composite insulator applicable to overhead ground wire deicing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150331U true CN203150331U (en) | 2013-08-21 |
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ID=48977840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708507 Expired - Lifetime CN203150331U (en) | 2012-12-18 | 2012-12-18 | Ground wire composite insulator applicable to overhead ground wire deicing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150331U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957658A (en) * | 2016-07-25 | 2016-09-21 | 国网湖南省电力公司 | Ice-preventing insulator for ground wire ice-melting reconstruction |
| CN111627621A (en) * | 2020-04-23 | 2020-09-04 | 浙江正远电力装备有限公司 | 10kV lightning-protection anti-icing insulator and manufacturing process thereof |
-
2012
- 2012-12-18 CN CN 201220708507 patent/CN203150331U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957658A (en) * | 2016-07-25 | 2016-09-21 | 国网湖南省电力公司 | Ice-preventing insulator for ground wire ice-melting reconstruction |
| CN111627621A (en) * | 2020-04-23 | 2020-09-04 | 浙江正远电力装备有限公司 | 10kV lightning-protection anti-icing insulator and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |