CN201681681U - Anti-pollution flashover disc insulator - Google Patents
Anti-pollution flashover disc insulator Download PDFInfo
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- CN201681681U CN201681681U CN2010201447556U CN201020144755U CN201681681U CN 201681681 U CN201681681 U CN 201681681U CN 2010201447556 U CN2010201447556 U CN 2010201447556U CN 201020144755 U CN201020144755 U CN 201020144755U CN 201681681 U CN201681681 U CN 201681681U
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Abstract
The utility model discloses an anti-pollution flashover disc insulator comprising an umbrella disc of an iron cap, wherein the lower surface of the umbrella disc is provided with an annular umbrella edge and a water dripping edge; the water dripping edge is integrated with the umbrella disc; and the distance h1 between the lowest end of the water dripping edge and the axis L of the disc insulator is smaller than the distance h2 between the uppermost end of the water dripping edge and the axis L of the disc insulator; i.e. the diameter of the lowest end of the annular water dripping edge is less than the diameter of the uppermost end of the water dripping edge. In the utility model, the distance h1 between the lowest end of the water dripping edge and the axis L of the disc insulator is smaller than the distance h2 between the uppermost end of the water dripping edge and the axis L of the disc insulator, therefore, the accumulated dirt on the umbrella disc naturally slips down under the action of wind force and rain, the dirt particles in the atmosphere can be prevented from entering the lower surface of the umbrella disc and can be prevented from accumulating on the umbrella edge on the lower surface of the umbrella disc; in addition, the umbrella disc is provided with an insulating ring and a cleaning brush, the accumulated dirt on the umbrella disc can be continuously swept away under the pushing of the wind force, thereby ensuring the upper surface of the insulator to be clean and achieving the anti-pollution flashover propose.
Description
Technical field
The utility model relates to a kind of insulator, relates in particular to a kind of disc insulator of anti-pollution flashover.
Background technology
Insulator is in long-time running, and the dirt particle in the atmosphere deposits to its surface and forms pollution layer, when dry climate, pollution layer resistance is very big, and insulation property can not reduce, but descends in meteorological conditions such as mist, dew, light rain, snow, after electrolyte in the pollution layer is moistening, surface conductivity is increased, decreasing insulating, and the maintenance moisture that grades of ash wherein, promote that pollution layer further makes moist, thereby dissolve more electrolyte, cause the flashover discharge of insulator wetted surface, be called for short pollution flashover.The distinguishing feature of insulator contamination discharge is that flashover voltage is low, may hang down 10kV and following.Standard insulator flashover voltage average out to 75kV of every under the dry cleansing state, 45kV is also arranged under dampness, the creeping discharge process of contaminated insulator is different fully with the clean surface, it no longer is a kind of punch-through of simple air gap, but a kind of and electricity, heat, the relevant filthy surface gas ionization of chemical factor, superficial layer heating and oven dry, and local arc takes place, the heat power equilibrium process of development.The pollution flashover discharge process can be divided into four-stage on the macroscopic view, i.e. moistening, the formation of the contamination of insulator surface, pollution layer is done the generation and the development of band, partial discharge and is caused edge flashing.Therefore the three elements of pollution flashover are, the insulator surface contamination, pollution layer is moistening and the voltage effect.As long as block the purpose that a key element just can reach anti-pollution flashover.And the contamination phenomenon on electric transmission line isolator surface is inevitable, will clean once after a while, the general modes such as hand sweeping, machinery cleaning or Living water washing that adopt, the Living water washing cost is higher, owing to use the restriction that is subjected to geographical conditions, transmission line does not generally carry out machinery cleaning or Living water washing, hand sweeping needs to have a power failure, annual power failure is cleaned to electric power system and national economy and is caused enormous economic loss, even like this, pollution flashover accident still happens occasionally.At present, the various insulators that electric power system is used mainly are to realize self-cleaningly by rain-out, if do not rain for a long time, contamination will compare seriously, often just spotting or pollution flashover just taken place during the greasy weather, and the initiation accident of having a power failure on a large scale brings about great losses.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned deficiency a kind of Antipollution flashover disk-shaped insulator that can self-cleaning function is provided.
The technical solution of the utility model is as follows:
A kind of Antipollution flashover disk-shaped insulator comprises that the umbrella disk of chapeau de fer, the lower surface of umbrella disk are provided with annular umbrella rib and the edge of dripping, described drip along with umbrella disk be one, the edge of dripping bottom with the distance h of disc insulator axis L
1Less than dripping along the distance h of the top with disc insulator axis L
2, promptly the diameter bottom on the annular edge of dripping is less than dripping along the diameter of upper end.
Above-mentioned Antipollution flashover disk-shaped insulator, described annular umbrella rib bottom with the distance h of disc insulator axis L
3Less than the distance h of umbrella rib the top with disc insulator axis L
4
Above-mentioned Antipollution flashover disk-shaped insulator, described umbrella rib is at least two, and the length of umbrella rib diminishes successively from outside to inside.
Above-mentioned Antipollution flashover disk-shaped insulator also is provided with dead ring on umbrella disk, cleaning brush is arranged on dead ring by rotating shaft.
Above-mentioned Antipollution flashover disk-shaped insulator is provided with a dead ring or two dead rings on umbrella disk, cleaning brush is set on the dead ring.
Adopt said structure, the utility model has following advantage: by the edge of dripping bottom with the distance h of disc insulator axis L
1Less than dripping along the distance h of the top with disc insulator axis L
2Promptly the diameter bottom on the annular edge of dripping is less than dripping along the diameter of upper end, contamination on the umbrella disk natural landing under the effect of wind-force and rainwater like this, and can block dirt particle in the atmosphere, do not allow it enter into the lower surface of umbrella disk, avoid dirt particle to be deposited on the umbrella rib of umbrella disk lower surface, the length of umbrella rib with drip along same shape, when increasing creepage distance, prevent that dirt particle is deposited in the lower surface of umbrella disk, and umbrella disk is provided with dead ring and cleaning brush, can under the promotion of wind-force, constantly sweep off the contamination on the umbrella disk, thereby guarantee the cleaning of insulator upper surface, play the purpose of anti-pollution flashover.The utility model all has self-cleaning function on the upper surface of insulator umbrella disk and the lower surface when increasing creepage distance, anti-pollution flashover effect is remarkable.Compared with prior art, the utility model can utilize wind-driven cleaning insulator surface dirt, insulator is kept clean, can improve pollution flashover voltage more than 70%, exempt cleaning or reduce the cleaning number of times, saved great amount of manpower and material resources, reduce the line outage number of times that thunderbolt causes, reduced pollution flashover breaking accident, construction is simple, cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model;
Fig. 3 is the structural representation of dead ring and cleaning brush among Fig. 2.
Embodiment
A kind of Antipollution flashover disk-shaped insulator as shown in Figure 1 and Figure 2 comprises that the umbrella disk 3 of chapeau de fer 2, the lower surface of umbrella disk 3 are provided with annular umbrella rib 4 and drip along 5, described drip along 5 with umbrella disk be one, the edge of dripping bottom with the distance h of disc insulator axis L
1Less than dripping along the distance h of the top with disc insulator axis L
2, described annular umbrella rib 4 bottom with the distance h of disc insulator axis L
3Less than the distance h of umbrella rib the top with disc insulator axis L
4, described umbrella rib is at least two, and the length of umbrella rib diminishes successively from outside to inside.
Preferred structure of the present utility model as shown in Figures 2 and 3, on umbrella disk 3, also be provided with dead ring 7, dead ring 7 is fixed on the umbrella disk by support, cleaning brush 6 is arranged on the dead ring 7 by rotating shaft, cleaning brush is that light weight insulating material is made, distance between dead ring and the umbrella disk is equal to or slightly less than the length of cleaning brush bristle, have that each cleaning brush 6 rotates around dead ring under the situation of wind under the effect of wind-force, a dead ring or two dead rings are set on umbrella disk 3, cleaning brush is set on the dead ring, as more than 1 grade during wind-force, cleaning brush will rotate around dead ring 7 with the wind, constantly sweep off the lip-deep dust of insulator umbrella disk, thereby guarantee the cleaning of insulator surface.
Claims (5)
1. Antipollution flashover disk-shaped insulator, the umbrella disk (3) that comprises chapeau de fer (2), the lower surface of umbrella disk (3) is provided with annular umbrella rib (4) and drips along (5), it is characterized in that: described to drip along (5) be one with umbrella disk, the edge of dripping bottom with the distance h of disc insulator axis L
1Less than dripping along the distance h of the top with disc insulator axis L
2
2. Antipollution flashover disk-shaped insulator according to claim 1 is characterized in that: described annular umbrella rib (4) bottom with the distance h of disc insulator axis L
3Less than the distance h of umbrella rib the top with disc insulator axis L
4
3. Antipollution flashover disk-shaped insulator according to claim 2 is characterized in that: described umbrella rib is at least two, and the length of umbrella rib diminishes successively from outside to inside.
4. according to each described Antipollution flashover disk-shaped insulator among the claim 1-3, it is characterized in that: also be provided with dead ring (7) on umbrella disk, cleaning brush (6) is arranged on the dead ring (7) by rotating shaft.
5. Antipollution flashover disk-shaped insulator according to claim 4 is characterized in that: a dead ring or two dead rings are set on umbrella disk, cleaning brush is set on the dead ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201447556U CN201681681U (en) | 2010-03-30 | 2010-03-30 | Anti-pollution flashover disc insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201447556U CN201681681U (en) | 2010-03-30 | 2010-03-30 | Anti-pollution flashover disc insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681681U true CN201681681U (en) | 2010-12-22 |
Family
ID=43346718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201447556U Expired - Lifetime CN201681681U (en) | 2010-03-30 | 2010-03-30 | Anti-pollution flashover disc insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834041A (en) * | 2010-03-30 | 2010-09-15 | 河南省电力公司济源供电公司 | Antipollution flashover disk-shaped insulator |
| CN102222551A (en) * | 2011-06-17 | 2011-10-19 | 南京电气（集团）有限责任公司 | Disk-shaped suspension insulator special for tension resisting circuit |
-
2010
- 2010-03-30 CN CN2010201447556U patent/CN201681681U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834041A (en) * | 2010-03-30 | 2010-09-15 | 河南省电力公司济源供电公司 | Antipollution flashover disk-shaped insulator |
| CN101834041B (en) * | 2010-03-30 | 2011-12-07 | 河南省电力公司济源供电公司 | Antipollution flashover disk-shaped insulator |
| CN102222551A (en) * | 2011-06-17 | 2011-10-19 | 南京电气（集团）有限责任公司 | Disk-shaped suspension insulator special for tension resisting circuit |
| CN102222551B (en) * | 2011-06-17 | 2012-06-06 | 南京电气（集团）有限责任公司 | Disk-shaped suspension insulator special for tension resisting circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101222 Effective date of abandoning: 20111207 |