CN201681680U - Ice flashover preventing composite insulator capable of lightning protection - Google Patents
Ice flashover preventing composite insulator capable of lightning protection Download PDFInfo
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- CN201681680U CN201681680U CN2010201890807U CN201020189080U CN201681680U CN 201681680 U CN201681680 U CN 201681680U CN 2010201890807 U CN2010201890807 U CN 2010201890807U CN 201020189080 U CN201020189080 U CN 201020189080U CN 201681680 U CN201681680 U CN 201681680U
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- umbrella cover
- sleeve
- plug
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- core rod
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Abstract
The utility model relates to an ice flashover preventing composite insulator capable of lightning protection, which comprises a core rod (2). A first composite umbrella cover (3) is arranged on a sleeve (9), the core rod (2) in the sleeve is jacketed with laminated metal oxide valves (8) and springs (7), the lower end of the core rod (2) is provided with a second composite umbrella cover (4), the upper end of the second composite umbrella cover (4) is sleeved with a first grading ring (11), the lower end of the second composite umbrella cover (4) is sleeved with a second grading ring (12), and the two ends of the core rod (2) are respectively covered by a bowl-shaped metal cap (1) and a ball-shaped metal cap (5). On freezing days, the utility model can prevent the ice coverage and block the serial connection of arcs, thereby greatly reducing the circuit tripping probability. The utility model has the advantages that: 1), the whole core rod can bear large loads during suspension of power transmission wires; 2) the lightening protection section only bears low voltage; 3) the metal oxide valves are contacted tightly; 4) the circuit can be protected against lightening; and 5) the insulating jacket formed via lamination of large and small umbrella skirts in series in a staggered way can prevent ice flashover on freezing days.
Description
Technical field
The utility model belongs to the electrical engineering equipment technical field, relates in particular to a kind of anti-ice-flashover composite insulator with lightning protection function, and this insulator is applicable to the ultra-high-tension power transmission line of easily sending out the multi-thunder area of ice damage.
Background technology
In recent years, along with developing rapidly of China's power construction, the electrical network overlay area is more and more wider, and many transmission lines all need to set up mountain area with a varied topography, that weather is high and cold.In these areas, one meets bad weather, and transmission line just is easy to have a strong impact on the safe operation of electrical network because of icing flashover or lightning stroke flashover initiation tripping operation accident.And, the method that increases umbrella footpath, umbrella spacing and enrich the synthetic insulator beveled structure is only arranged now for the icing flashover, can in limited range, improve the electric property of synthetic insulator icing flashover; And for lightning stroke flashover, except that setting up traditional measures such as lightning conducter, reduction pole tower ground resistance, have no other way.Though occurred in recent years violent at lightening activity, soil resistivity is high, install the method for leakage conductor on the electric power line pole tower of regions with complex terrain additional.But this class methods or can only be anti-icing, or can only lightning protection, there is the defective of function singleness.If newly-increased leakage conductor need increase fixture on original shaft tower, so just strengthened and set up difficulty and construction cost.
The utility model content
The technical problems to be solved in the utility model is, deficiency at existing synthetic insulator and leakage conductor existence, design a kind of anti-ice-flashover composite insulator with lightning protection function, but this insulator both lightning protection also can anti-icingly dodge, and answer simple installation, need not to change the shaft tower original structure, thereby can save the spending of lectotype selection and power grid construction.
Technical solution of the present utility model is, described a kind of anti-ice-flashover composite insulator with lightning protection function referring to Fig. 1, has plug 2, and the upper end coaxial line of described plug 2 is with a sleeve 9.There are upper end cover 6 sealings the upper end of this sleeve 9, and there are bottom end cover 10 sealings the lower end of this sleeve 9.Coaxial line is with on this sleeve 9, has the first compound umbrella cover 3 of the full skirt string of the big or small full skirt intersecting that umbrella directly varies in size, and coaxial line is with stacked metal oxide valve block 8 on the plug 2 in this sleeve 9.Be with spring 7 on the plug 2 between described metal oxide valve block 8 and the upper end cover 6.The lower end coaxial line of described plug 2 is with, and has the second compound umbrella cover 4 of the full skirt string of the big or small full skirt intersecting that umbrella directly varies in size.The lower end of this second compound umbrella cover 4 is with base plate 13.Be connected with first grading ring 11 that is enclosed within the described second compound umbrella cover 4 upper ends by connecting rod on the bottom surface of described bottom end cover 10.And be connected with second grading ring 12 that is enclosed within the described second compound umbrella cover 4 lower ends by connecting rod on the upper bottom surface of described base plate 13.In addition, the upper end end top cover of described plug 2 is connected to a bowl-type metal cap 1; And the bottom, lower end of this plug 2 lid is connected to a spherical metal cap 5.Above-mentioned upper end cover 6 constitutes lightning protection section of the present utility model with above-mentioned spring 7, metal oxide valve block 8, sleeve 9, bottom end cover 10; First grading ring 11 and above-mentioned second grading ring 12 of said fixing on plug constitutes the insulating segment of connecting with the lightning protection section; And the above-mentioned first compound umbrella cover 3 and the above-mentioned second compound umbrella cover 4 become the insulating coating of the utility model product.
Operation principle of the present utility model is: when transmission line normally moves, insulator of the present utility model as be usually used in suspending transmission pressure in midair and make lead and ground between keep good insulation performance, the operating voltage major part is born by insulating segment; When Thunderstorm Weather occurs, when thunderbolt is attacked shaft tower or shielding lead directly, the gap that the over-voltage breakdown insulating segment grading ring 4 that thunder and lightning produces constitutes is after-applied on the lightning protection section, metal oxide valve block 8 meetings this moment absorb impact energy and clamp down on overvoltage, thereby protect whole insulator to make it avoid flashover, stop and cause the line tripping accident; And when the sleet freezing weather is attacked, above-mentioned compound umbrella cover 3 with stacked full skirt that umbrella directly varies in size, its big full skirt can play good bridging effect to the umbellule skirt, bridge joint between umbrella be can prevent whereby, serious icing snowberg and retardance electric arc serial connection prevented, thereby delay the ice slush bridging time of described insulator effectively, increase the difficulty of its flashover, reduce the probability of line tripping under the freezing weather greatly.
The beneficial effects of the utility model are:
1), whole plug suspention transmission pressure of running through up and down, it is bigger to bear load;
2), when circuit normally moves the lightning protection section to bear voltage lower, closely can the ignoring slowly of the ageing process of metal oxide valve block.Because the buffer action of the insulating segment of series connection is not normally moved even metal oxide valve block deterioration does not also influence circuit with it;
3), the tension of spring makes the contact of metal oxide valve block closely, and can prevent that plug from causing the metal oxide valve block to separate when stretching;
4), lightning protection section makes circuit have lightning protection function;
5), insulating coating adopts the full skirt string structure of big or small full skirt intersecting, successfully realized the anti-icing sudden strain of a muscle function under the low temperature sleet freezing weather.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the utility model, is denoted as among the figure:
1-bowl-type metal cap,
The 2-plug,
The 3-first compound umbrella cover,
The 4-second compound umbrella cover,
The spherical metal cap of 5-,
The 6-upper end cover,
The 7-spring,
8-metal oxide valve block,
The 9-sleeve,
The 10-bottom end cover,
11-first grading ring,
12-second grading ring,
The 13-base plate.
Embodiment
A kind of like this anti-ice-flashover composite insulator of this embodiment of the utility model with lightning protection function, referring to Fig. 1, the epoxy glass fiber leading-drawing rod that its plug 2 adopts commercially available Chinese Xiangfan state net synthetic insulator Co., Ltd to produce.Coaxial line is placed on the upper end cover 6 at sleeve 9, sleeve 9 two ends of plug 2 upper ends and bottom end cover 10, coaxial line and is placed on the spring 7 that is overlapped on the plug 2 between stacked metal oxide valve block 8, metal oxide valve block 8 and the upper end cover 6 on the plugs 2 in the sleeve 9 and is placed on base plate 13 on the second compound umbrella cover, 4 lower ends, all originates from DaLian, China method volt-ampere Electrical Appliances Co., Ltd.Wherein upper end cover 6 and bottom end cover 10 are tailored for the galvanized iron lumber; Metal oxide valve block 8 is annular zinc oxide valve plate; Sleeve 9 is the epoxy glass fiber cylinder.The bowl-type metal cap 1 at plug 2 two ends and spherical metal cap 5, be placed on the first compound umbrella cover 3 on the sleeve 9 and be placed on the second compound umbrella cover 4 of plug 2 lower ends, and second grading ring 12 that is placed on first grading ring 11 of the second compound umbrella cover, 4 upper ends and is placed on the second compound umbrella cover, 4 lower ends all originates from Chinese Xiangfan state net synthetic insulator Co., Ltd.Wherein bowl-type metal cap 1 adopts the metal cap of cap nest structure, and spherical metal cap 5 adopts the metal cap of pin ball formula structure, withholds in the plug termination by the cambered surface centripetal-stress; The full skirt string that the first compound umbrella cover 3 and the second compound umbrella cover 4 are made for high temperature resistant sulphurated siliastic with big or small full skirt intersecting that umbrella directly varies in size; First grading ring 11 and second grading ring 12 are the aluminium alloy grading ring.
Above-mentioned each assembly with reference to the assembling of structure shown in the accompanying drawing 1, promptly is nested with sleeve 9 at plug 2 upper end coaxial lines by above-mentioned technical solution of the present utility model.Upper end cover 6 and bottom end cover 10 seal the upper and lower end of this sleeve 9 successively respectively.First compound umbrella cover 3 coaxial lines are placed on the sleeve 9, and stacked metal oxide valve block 8 coaxial lines are placed on the plug 2 in the sleeve 9.Spring 7 is placed on the plug 2 between metal oxide valve block 8 and the upper end cover 6.Second compound umbrella cover 4 coaxial lines are placed on plug 2 lower ends.The second compound umbrella cover, 4 lower ends are nested with base plate 13.The bottom surface of bottom end cover 10 connects first grading ring 11 by connecting rod, and this first grading ring 11 is placed on the second compound umbrella cover, 4 upper ends.Base plate 13 upper bottom surfaces connect second grading ring 12 by connecting rod, and this second grading ring 12 is placed on the second compound umbrella cover, 4 lower ends.Bowl-type metal cap 1 and spherical metal cap 5 cover end top, upper end and the bottom, lower end that connects plug 2 successively respectively.
This a kind of anti-ice-flashover composite insulator with lightning protection function of the present utility model of said structure is proved to be respond well through manufacturing experimently to try out, and reaches designing requirement fully.
Claims (1)
1. anti-ice-flashover composite insulator with lightning protection function, has plug (2), it is characterized in that, the upper end coaxial line of described plug (2) is with a sleeve (9), there is upper end cover (6) sealing the upper end of this sleeve (9), there is bottom end cover (10) sealing the lower end of this sleeve (9), this sleeve (9) is gone up coaxial line and is with, the first compound umbrella cover (3) with full skirt string of the big or small full skirt intersecting that umbrella directly varies in size, and the last coaxial line of the plug (2) in this sleeve (9) is with stacked metal oxide valve block (8), be with spring (7) on the plug (2) between described metal oxide valve block (8) and the upper end cover (6), the lower end coaxial line of described plug (2) is with, the second compound umbrella cover (4) with full skirt string of the big or small full skirt intersecting that umbrella directly varies in size, the lower end of this second compound umbrella cover (4) is with base plate (13), be connected with first grading ring (11) that is enclosed within the described second compound umbrella cover (4) upper end by connecting rod on the bottom surface of described bottom end cover (10), and be connected with second grading ring (12) that is enclosed within described second compound umbrella cover (4) lower end by connecting rod on the upper bottom surface of described base plate (13), in addition, the upper end end top cover of described plug (2) is connected to a bowl-type metal cap (1); And the bottom, lower end of this plug (2) lid is connected to a spherical metal cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201890807U CN201681680U (en) | 2010-05-13 | 2010-05-13 | Ice flashover preventing composite insulator capable of lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201890807U CN201681680U (en) | 2010-05-13 | 2010-05-13 | Ice flashover preventing composite insulator capable of lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681680U true CN201681680U (en) | 2010-12-22 |
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ID=43346717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201890807U Expired - Fee Related CN201681680U (en) | 2010-05-13 | 2010-05-13 | Ice flashover preventing composite insulator capable of lightning protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709011A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Icing flashover preventing compound insulated lightning arrester |
| CN109215902A (en) * | 2018-09-10 | 2019-01-15 | 国网湖南省电力有限公司 | A kind of 500kV line thunder protection device based on arrester and insulator |
-
2010
- 2010-05-13 CN CN2010201890807U patent/CN201681680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709011A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Icing flashover preventing compound insulated lightning arrester |
| CN109215902A (en) * | 2018-09-10 | 2019-01-15 | 国网湖南省电力有限公司 | A kind of 500kV line thunder protection device based on arrester and insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20120513 |