CN203774020U - Overhead line umbrella group disc type suspension insulator - Google Patents
Overhead line umbrella group disc type suspension insulator Download PDFInfo
- Publication number
- CN203774020U CN203774020U CN201420112041.5U CN201420112041U CN203774020U CN 203774020 U CN203774020 U CN 203774020U CN 201420112041 U CN201420112041 U CN 201420112041U CN 203774020 U CN203774020 U CN 203774020U
- Authority
- CN
- China
- Prior art keywords
- insulator
- metal
- cap
- transmission line
- overhead transmission
- 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
- 239000012212 insulator Substances 0.000 title claims abstract description 93
- 239000000725 suspension Substances 0.000 title abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 96
- 229910052751 metal Inorganic materials 0.000 claims abstract description 96
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 27
- 239000002131 composite material Substances 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- 239000004945 silicone rubber Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005987 sulfurization reaction Methods 0.000 claims 1
- 230000005684 electric field Effects 0.000 abstract description 17
- 239000002245 particle Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229920000260 silastic Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
The utility model discloses an overhead line umbrella group disc type suspension insulator comprising a metal cap, an insulating body and metal pins. The middle portion of the insulating body is extended outwards to form a disc type upper umbrella. The lower portion of the insulating body is formed into a disc type lower umbrella. The side profile of the lower umbrella is shaped like a curved surface. The upper end of the metal cap is provided with a groove. A locking pin is installed in the groove. The lower end of the metal cap is provided with a metal sheet. By embedding the metal ring sheet into the lower end of the metal cap, the region in which the electric field causes conducting particles to discharge can be effectively restrained, the electric field intensity at the metal cap can be greatly reduced, and the generated corona and flashover can be restrained; and the surface of the insulating body and the surface of the metal ring sheet are coated with a layer of silicon rubber insulating layer, the utilization of the silicon rubber insulating layer can be used to improve the flashover voltage and the corona inception voltage of the insulator in filthy and moist conditions so as to reduce the leakage current and improve the service life of the insulator so as to reduce the utilization cost and inconvenience of manual insulator cleaning.
Description
Technical field
The utility model belongs to field of electrical equipment, specifically refers to a kind of overhead transmission line cluster parachute cap and pin insulator.
Background technology
Electric suspension type insulator is the product that electric power power transmission and transformation, electrical network external insulation are generally applied.Its function is mainly the safe operation that ensures electrical network external insulation.Its important functional parameter is anti-pollution flashover voltage value.The material of electric suspension type insulator is generally porcelain or glass material.At present, there is following important technological problems in this product: anti-pollution flashover voltage value is low; Some installs additional and increases the transformation of climbing product the insulator of glass material, have influence on the self-destruction function of glass insulator, and common insulator is under filthy wet condition, insulator is made used time insulation property at power-frequency voltage and is sharply declined, normal generation local distribution is inhomogeneous, the position concentrated at electric field often causes corona, thereby produces air interference.Inhomogeneous voltage distributes, and very easily causes porcelain body aging.The Main Means that prevents at present pollution flashover is artificial regularly cleaning insulator, and time-consuming, effort and maintenance cost drop into very large.
Utility model content
The purpose of this utility model is: overcome the above-mentioned defect of prior art, a kind of overhead transmission line cluster parachute cap and pin insulator is provided, metal cap lower edge at insulator is embedded with annular sheet metal structure, at the coated one deck silicone insulation composite sheath in sheet metal structure surface, effectively suppress the corona and the flashover that because of non-uniform electric, cause, avoid causing porcelain body aging, and reduced the leakage of electric current, effectively alleviated overhead transmission line contingency occurrence probability.
The utility model is achieved through the following technical solutions: a kind of overhead transmission line cluster parachute cap and pin insulator, comprise metal cap, insulator and metal leg, described insulator middle part extends to form umbrella in dish type to external diameter, described insulator bottom is dish type subumbrella, described subumbrella outside exterior feature is curved surface shape, described metal cap upper end is provided with a groove, and locking pin is installed in groove, and described metal cap lower end is provided with sheet metal.The utility model be to overhead transmission line in running, due to the various particulates in atmosphere, some sticks to insulator surface, in the situation that making moist, insulator surface insulating capacity reduces, surface Leakage Current increases, and causes the further improvement that this common insulator structure of flashover phenomenon occurs under normal working voltage.The utility model can be gone up umbrella and subumbrella shape amplitude by adjustment, and subumbrella outside exterior feature is curved surface shape, can further increase the difficulty of adhering to of dunghill, having strengthened rains simultaneously blows weather to upper umbrella and the clean dynamics of subumbrella, has improved the clean dynamics of overhead transmission line cluster parachute disc insulator; The utility model is by embedding sheet metal is set in metal cap lower end, and insulator has good insulating performance, after sheet metal is installed, even if the utility model insulator arc-over also can only be started by sheet metal top, via sheet metal outer silicone surface, along original insulator surface, to metal leg place, form path again, or started by metal leg place, to formation loop, metal cap place.Visible this structure is significantly improved insulator surface Electric Field Distribution, having suppressed electric field makes conducting particles along insulator creeping discharge, thereby just reduced accordingly along insulator surface Leakage Current, thereby reduced the loss of transmission line, and reduced the electric field strength at metal cap place.And the operation principle of locking pin of the present utility model, insulator, metal leg, metal cap belongs to general knowledge known in this field, and improvement of the present utility model do not lie in this, therefore do not repeating.
Further, described sheet metal is annular sheet metal, and the shape of sheet metal can have a variety of, is preferably annular in the utility model, is conducive to better improve the voltage distribution at metal cap place, reduces electric field strength, prevents leakage of current.
Further, the external diameter of described sheet metal is less than the external diameter of umbrella, and the internal diameter of sheet metal should mate with the external diameter of upper umbrella, realizes good electrically contacting between the medial surface of sheet metal and metal cap, prevents that the effect that sheet metal improves Electric Field Distribution is weakened.
Further, described sheet metal anchor ring plane is identical with upper umbrella upper surface shape, in the utility model, sheet metal anchor ring can be that plane can be also identical with the upper umbrella surface configuration of insulator, and preferred identical anchor ring, more can meet the requirement that improves Electric Field Distribution.
Further, described sheet metal surface coverage one deck silicone rubber insulation layer, the silicon rubber of surface coverage is after high temperature vulcanized, to be fixed on above sheet metal, therefore insulator robustness, stability have been strengthened, and increased the useful life of insulator, in the situation that insulator is in pollution severity, silicone rubber insulation layer is the first-selection as organic insulating material, has good insulation property and there is no obvious spark tracking simultaneously.
Further, described insulator surface has been coated one deck composite sheath, described composite sheath is high temperature vulcanized silica gel composite sheath, silicon rubber composite sheath has good hydrophobicity and hydrophobicity animal migration, insulator is because of its surface coverage one deck composite sheath, therefore insulator is not directly exposed in air, has reduced because of circumstance of temperature difference cataclysm or thunderbolt causes porcelain piece to puncture or the frequency of explosion, thereby greatly reduces line upkeep expense.
Further, described metal leg is iron pin, and described metal cap is chapeau de fer, and the material of metal leg and metal cap can be various metals material, and the utility model is preferably iron material matter.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is stretched out and is formed umbrella structure in dish type by insulator middle part, and upper umbrella structure outside exterior feature is curved surface shape, at insulator, be provided with disk-shaped subumbrella structure, the shape of umbrella and subumbrella structure in adjustment, thereby increase the difficulty that dunghill adheres to, strengthen the clean dynamics of weather to upper umbrella and subumbrella structure of blowing of raining simultaneously, and be difficult for occurring pollution flashover, the useful life that has strengthened overhead transmission line cluster parachute disc insulator;
(2) the utility model is by being embedded with metal ring plate in metal cap lower end, effectively suppressed electric field and made the region area of conducting particles electric discharge, and significantly reduced metal cap place electric field strength, and be conducive to suppress therefore and the corona and the flashover that occur;
(3) the utility model is by being coated one deck silicone rubber insulation layer at insulator surface and metal ring plate, the use of silicone rubber insulation layer is conducive to improve flashover voltage and the discharge inception voltage of insulator under filthy and moisture conditions, and reduce Leakage Current, prevent that insulator is breakdown.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1-locking pin, 2-metal cap, 3-sheet metal, 4-metal leg, 5-insulator, 6-composite sheath.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment 1:
The primary structure of the present embodiment, as shown in Figure 1, a kind of overhead transmission line cluster parachute cap and pin insulator, comprise metal cap 2, insulator 5 and metal leg 4, described insulator 5 middle parts extend to form umbrella in dish type to external diameter, and described insulator 5 bottoms are disk-shaped subumbrella, described subumbrella outside exterior feature is curved surface shape, the upper end of described metal cap 2 is provided with a groove, and locking pin 1 is installed in groove, and described metal cap 2 lower ends are provided with sheet metal 3.A kind of overhead transmission line cluster parachute cap and pin insulator is in overhead transmission line running, in the situation that making moist, due to the various particulates in atmosphere, some sticks to insulator surface, insulator surface insulating capacity reduces, surface Leakage Current increases, and causes the further improvement that this common insulator structure of flashover phenomenon occurs under normal working voltage.Can go up by adjustment the amplitude of umbrella and subumbrella, and outside subumbrella, exterior feature is curved surface shape, has increased the difficulty of adhering to of dunghill, has strengthened the clean dynamics of weather to upper umbrella and subumbrella of blowing of raining simultaneously, improved the clean dynamics of overhead transmission line cluster parachute disc insulator; And by sheet metal 3 being set in metal cap 2 lower ends, and insulator 5 has good insulation property, after sheet metal 3 is installed, even if the utility model insulator arc-over also can only be started by sheet metal 3 tops, silastic surface via sheet metal outside, along original insulator 5 surfaces, to metal leg 5 places, form path again, or started by metal leg 5 places, to metal cap 2 formation loops, place.Visible this structure is significantly improved the Electric Field Distribution of insulator surface, having suppressed electric field makes conducting particles along insulator creeping discharge, thereby become and to have reduced accordingly along insulator surface Leakage Current, thereby reduced the loss of transmission line, and reduced the electric field strength at metal cap place.The upper end of metal cap 2 is provided with groove, be convenient to when changing insulator or carry out insulator maintenance, clamping to insulator, and locking pin 1 structure welding is in groove, for the stainless steel of favorable elasticity is made, be shaped as straight pin or split pin, be mainly used in fixing to insulator structure, and be connected in series with a plurality of insulators, effectively reduce and because of pollution flashover, cause insulator structure damage, extend the life cycle of insulator, and reduced manually to carry out the cost of inspection and maintenance.
Embodiment 2:
The present embodiment defines sheet metal 3 for annular sheet metal on the basis of embodiment 1, and it is a lot of that the shape of sheet metal can be selected, and this suspension insulator is selected cup insuator, is conducive to further improve the electric field strength of metal cap 2, is uniformly distributed voltage, the external diameter that further limits sheet metal 3 is less than the external diameter of umbrella, and anchor ring plane is identical with upper umbrella structure upper surface shape, be conducive to suppress to reduce the Leakage Current of insulator surface, reduce the loss of transmission line, and the electric field strength at metal cap 2 places reduce by more than 50, further limit the sheet metal 3 coated one deck silicone rubber insulation layers in surface, silastic material has good insulation property, therefore there is the silicon rubber of adequate thickness under service conditions, insulator 5 is difficult to breakdown, even if there is electric discharge from sheet metal 3 in insulator, silastic surface via sheet metal 3 outsides, again along original insulator 5 surfaces to metal leg 4 formation loops, place, or from metal leg 4, to metal cap 2 formation loops, place, therefore surface coverage has the sheet metal 3 of silicon rubber except improving Electric Field Distribution, also significantly increased creepage distance, this is identical with the object that skirt improvement common line insulator is climbed in increase, but because the silicon rubber in metal ring plate fixedly gets on after high temperature vulcanized, its robustness, stability and useful life are that creeping-increasing skirt structure is incomparable.Other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The present embodiment at the enterprising one-step optimization in the basis of above-described embodiment suspension insulator, insulator 5 is porcelain body, on insulator 5 surfaces, be coated one deck composite sheath 6, described composite sheath 6 is high temperature vulcanized silica gel composite sheath, silica gel composite sheath is a kind of hydrophobic material, be a kind of have adhesiveness and water repellency oil plant, it is covered to insulator surface, when after wet environment or dunghill fall thereon, just by silica gel material, surrounded and form one by one independently fine particles, the fine particles that is at this time wrapped in the inside is difficult for the moisture absorption, even if the moisture absorption is also the particulate isolating one by one, and can not form the conductive path of sheet moisture film, thereby can avoid the generation of pollution flashover, further limiting metal leg 4 is iron pin, and metal cap 2 is chapeau de fer, can better realize overhead transmission line cluster parachute cap and pin insulator structure.Other parts of the present embodiment are same as the previously described embodiments, repeat no more.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, all fall into protection range of the present utility model.
Claims (10)
1. an overhead transmission line cluster parachute cap and pin insulator, it is characterized in that: comprise metal cap (2), insulator (5) and metal leg (4), described insulator (5) middle part extends to form umbrella in dish type to external diameter, described insulator (5) bottom is dish type subumbrella, described subumbrella outside exterior feature is curved surface shape, described metal cap (2) upper end is provided with a groove, and locking pin (1) is installed in groove, and described metal cap (2) lower end is provided with sheet metal (3).
2. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 1, is characterized in that: described sheet metal (3) is annular sheet metal.
3. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 1 and 2, is characterized in that: the external diameter of described sheet metal (3) is less than umbrella external diameter.
4. according to a kind of overhead transmission line cluster parachute cap and pin insulator of claim 3, it is characterized in that: described sheet metal (3) anchor ring plane is identical with upper umbrella upper surface shape.
5. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 4, is characterized in that: described sheet metal (3) surface coverage one deck silicone rubber insulation layer.
6. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 1, is characterized in that: described insulator (5) is porcelain body.
7. according to a kind of overhead transmission line cluster parachute cap and pin insulator described in claim 1 or 6, it is characterized in that: the coated one deck composite sheath (6) in described insulator (5) surface.
8. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 7, is characterized in that: described composite sheath (6) is sulfuration silica gel composite sheath.
9. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 1, is characterized in that: described metal cap (2) is chapeau de fer.
10. a kind of overhead transmission line cluster parachute cap and pin insulator according to claim 1, is characterized in that: described metal leg (4) is iron pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112041.5U CN203774020U (en) | 2014-03-12 | 2014-03-12 | Overhead line umbrella group disc type suspension insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112041.5U CN203774020U (en) | 2014-03-12 | 2014-03-12 | Overhead line umbrella group disc type suspension insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774020U true CN203774020U (en) | 2014-08-13 |
Family
ID=51291178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112041.5U Expired - Lifetime CN203774020U (en) | 2014-03-12 | 2014-03-12 | Overhead line umbrella group disc type suspension insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774020U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205900A (en) * | 2016-08-24 | 2016-12-07 | 国网江西省电力公司南昌供电分公司 | A kind of gold utensil method for designing improving insulator contamination voltage and gold utensil |
| CN108511140A (en) * | 2018-04-08 | 2018-09-07 | 四川明鑫电器电瓷有限公司 | Porcelain composite insulator with protection skirt |
| CN109932597A (en) * | 2019-03-22 | 2019-06-25 | 国网湖南省电力有限公司 | A kind of uneven degradation platform of composite insulator umbrella skirt and its application method |
-
2014
- 2014-03-12 CN CN201420112041.5U patent/CN203774020U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205900A (en) * | 2016-08-24 | 2016-12-07 | 国网江西省电力公司南昌供电分公司 | A kind of gold utensil method for designing improving insulator contamination voltage and gold utensil |
| CN108511140A (en) * | 2018-04-08 | 2018-09-07 | 四川明鑫电器电瓷有限公司 | Porcelain composite insulator with protection skirt |
| CN109932597A (en) * | 2019-03-22 | 2019-06-25 | 国网湖南省电力有限公司 | A kind of uneven degradation platform of composite insulator umbrella skirt and its application method |
| CN109932597B (en) * | 2019-03-22 | 2021-05-18 | 国网湖南省电力有限公司 | Composite insulator umbrella skirt non-uniform aging test platform and use method 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 |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |