CN201877226U - Suspension type porcelain insulator for direct-current overhead transmission lines - Google Patents
Suspension type porcelain insulator for direct-current overhead transmission lines Download PDFInfo
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- CN201877226U CN201877226U CN2010206329645U CN201020632964U CN201877226U CN 201877226 U CN201877226 U CN 201877226U CN 2010206329645 U CN2010206329645 U CN 2010206329645U CN 201020632964 U CN201020632964 U CN 201020632964U CN 201877226 U CN201877226 U CN 201877226U
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- disc
- umbrella body
- disc umbrella
- overhead transmission
- insulating part
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Abstract
The utility model discloses a suspension type porcelain insulator for direct-current overhead transmission lines, which comprises a disc-shaped porcelain insulating part, an iron cap and a steel foot, the head of the disc-shaped porcelain insulating part is covered by the iron cap, the steel foot is positioned in the disc-shaped porcelain insulating part, and the porcelain insulator is characterized in that the umbrella parts of the disc-shaped porcelain insulating part are three disc-shaped umbrellas. Because the umbrellas are provided with a stepped air clearance and >-shaped air clearances, the creepage distance of the umbrellas can be increased, the lower surfaces of the umbrellas can protect the creepage distance, and because the air clearances partition the umbrellas into open shapes, in all weathers, natural wind can blow off the polluting dust which can be accumulated on the surfaces of the umbrellas under the heavily polluted atmospheric environment. Consequently, under the heavily polluted environment, the direct-current insulator in operation has more excellent pollutant-resistant property. Because the surfaces of the umbrellas are provided with cambered surfaces, upper and lower inclined surfaces, a trapeziform surface and smooth transitional rounded edges, redundant material can be removed, consequently, not only is the consumption of the material reduced, but also the weight of the umbrella parts is reduced, and thereby the fabrication cost of the insulator is reduced.
Description
Technical field
The utility model relates to a kind of suspension disc insulator, especially a kind of direct current overhead transmission line suspended porcelain insulator.
Background technology
Suspension disc insulator is made monolithic form usually, and the difference according to electric pressure during use is formed string with several monolithics, is installed on to play insulation and fixing between high pressure shaft tower and the transmission pressure.
A large amount of overhead transmission lines shows with suspension disc insulator operating experience: in the certain voltage scope, the filthy withstand voltage of insulator string generally is linear increase with the increase of its sheet number, this mainly is that filthy withstand voltage is also along with improve because creepage distance and string length increase.But, limit by the shaft tower insulating space, the number that the sheet number increases is limited, can not reach needed number sometimes, increases a lot of investments again if strengthen the shaft tower size.Just because of this, actively seeking big creepage distance insulator for filthy area with the insulator people is a kind of feasible method.
At present, the cap and pin insulator full skirt that comes into operation in a large number in direct current overhead transmission line transmission line generally adopts hood-shaped umbrella or two kinds of moulding of double-layer umbrella, and the insulator of common hood-shaped umbrella full skirt or two kinds of moulding of double-layer umbrella full skirt can make creepage distance increase to some extent by the up-sizing of simple property.Yet, practice shows, creepage distance length increasing degree is limited under technology essential factor limitations such as equal umbrella disk diameter, product structure height, distance between commutator segments, and, because the increase of size must bring the deal of monolithic product overweight, manufacture difficulty strengthens, production cost is crossed high many adverse effects.
Summary of the invention
The utility model purpose is: providing a kind of can particularly move under the heavy pollution environment at China's filthy environment, the direct current overhead transmission line suspended porcelain insulator of more economic, suitable umbrella skirt construction.
The technical solution of the utility model is: a kind of direct current overhead transmission line suspended porcelain insulator, comprise disc porcelain insulating part, chapeau de fer and steel pin, described chapeau de fer covers on the head of described disc porcelain insulating part, described steel pin is positioned at described disc porcelain insulating part, and the umbrella portion that it is characterized in that described disc porcelain insulating part is three disc umbrella bodies.
Preferably, three disc umbrella bodies of described disc porcelain insulating part are along same the vertical arranged alternate of axial line, described three disc umbrella bodies are perpendicular to axial line, near chapeau de fer to be respectively disc umbrella body one, disc umbrella body two and disc umbrella body three from top to bottom away from chapeau de fer.
Preferably, the diameter of described disc umbrella body two is less than the diameter of disc umbrella body one and disc umbrella body three.
Preferably, the diameter of described disc umbrella body three is smaller or equal to the diameter of disc umbrella body one.
Preferably, the angle of the lower surface of described disc umbrella body one and disc umbrella body two and described axial line vertical plane is not less than 3 °.
Preferably, the angle of the upper and lower surface of described disc umbrella body one is 7～9 °; The angle of the upper and lower surface of described disc umbrella body two is 7～9 °.
Preferably, the angle of the upper surface of described disc umbrella body three and described axial line vertical plane is more than or equal to 30 °.
Preferably, between described disc umbrella body one and the disc umbrella body two air gap one is arranged; Between described disc umbrella body two and the disc umbrella body three air gap two is arranged; In the described disc umbrella body three air gap three is arranged.
Preferably, the shape of described air gap one, air gap two and air gap three, size are all different.
Preferably, described disc umbrella body one, the contained side that forms between disc umbrella body two and the disc umbrella body three is the circular arc limit.
The utility model has the advantages that:
1. the present invention is with three diameter, the vertical arranged alternate of variform disc umbrella body; wherein not only can avoid drenching with rain but also additionally increased the creepage distance of umbrella portion than the umbrella body of minor diameter; the updip face that each umbrella body lower surface of while is provided with has increased the protection creep distance under the insulator hygrometric state virtually, and the performance of this kind insulator tolerance wet flash-over voltage is further enhanced.
The present invention by be provided with a step-like air gap body further increased insulator the surface creepage distance and the protection creep distance, the umbrella surface that "＞" shape air gap body that is provided with again forms open appearance is difficult for contamination.Therefore, this kind of operation D.C. isolation has more the dirty performance of good resistant under the heavy pollution environment.
The present invention utilize again the umbrella surface be provided with arcwall face, on the planform body that has a down dip face, trapezoidal faces and seamlessly transit the circular arc limit reject unnecessary entity, both reduced the consumption of solid material, alleviate umbrella portion weight again, thereby reduced the insulator manufacturing cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structure chart of direct current overhead transmission line of the present utility model with suspended porcelain insulator.
Fig. 2 is the structure chart of direct current overhead transmission line of the present utility model with suspended porcelain insulator.
Fig. 3 is the structure chart of direct current overhead transmission line of the present utility model with suspended porcelain insulator.
Wherein: 1 chapeau de fer; 2 disc porcelain insulating parts; 3 steel pin; 4 air gaps three; 5 disc umbrella bodies one; 6 air gaps one; 7 disc umbrella bodies two; 8 air gaps two; 9 disc umbrella bodies three; 10 disc umbrella body upper surfaces; 12 disc umbrella body lower surfaces; 13 disc umbrella body lower surfaces; 15 circular arc limits 1; 16 circular arc limits 2; 17 circular arc limits 3; 18 circular arc limits 4; 19 circular arc limits 5; 20 circular arc limits 6; 21 circular arc limits 8; 22 circular arc limits 9.
Embodiment
Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, a kind of direct current overhead transmission line suspended porcelain insulator comprises disc porcelain insulating part 2, chapeau de fer 1 and steel pin 3, and chapeau de fer 1 covers on the head of disc porcelain insulating part 2, steel pin 3 is positioned at disc porcelain insulating part 2, the umbrella portion of disc porcelain insulating part is three disc umbrella bodies, disc umbrella body 1, disc umbrella body 27 and disc umbrella body 39; Disc umbrella body 1, disc umbrella body 27 and disc umbrella body 39 are along the vertical from top to bottom arranged alternate of same axial line, and three disc umbrella bodies are perpendicular to axial line.The obvious indentation of diameter of disc umbrella body 27 is drenched with rain to avoid disc umbrella body 27 in disc umbrella body 1 and disc umbrella body 39, and disc umbrella body 27 can play the performance purpose that improves this insulator tolerance wet flash-over voltage.Disc umbrella body 39 diameters are made as and are slightly less than or equal disc umbrella body 1, can play the effect of adjusting the creepage distance size according to performance need.The lower surface 12 of disc umbrella body 1 and disc umbrella body 27 and 13 and the angle of described axial line vertical plane be not less than 3 °.The angle of the upper and lower surface of disc umbrella body 1 is 7～9 °; The angle of the upper and lower surface of disc umbrella body 27 is 7～9 °.The upper surface of disc umbrella body 39 and the angle of described axial line vertical plane are 30 °, also can be greater than 30 °.Between disc umbrella body 1 and the disc umbrella body 27 "＞" shape air gap 1 is arranged; Between disc umbrella body 27 and the disc umbrella body 39 "＞" shape air gap 28 is arranged; The air gap 34 that " stairstepping " arranged in the disc umbrella body 39.Air gap body 4 has the effect that increases disc umbrella body 39 inner surfaces protection creepage distance, and air gap 1 and air gap 28 are beneficial to the natural wind all-weather and blow away the pollution dust that may pile up the umbrella surface under the heavy pollution atmospheric environment.Therefore, this kind of operation D.C. isolation has more the dirty performance of good resistant under the heavy pollution environment.Disc umbrella body one, the contained side that forms between disc umbrella body two and the disc umbrella body three is the circular arc limit, the upper surface of disc umbrella body 1 also is an arc, has the air gap three of " stairstepping " also to adopt in the disc umbrella body 39 to seamlessly transit the circular arc limit to reject unnecessary entity.More than design had both reduced the consumption of solid material, alleviated umbrella portion weight again, thereby had reduced the insulator manufacturing cost.
Above embodiment only is the utility model a kind of execution mode wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. direct current overhead transmission line suspended porcelain insulator, comprise disc porcelain insulating part, chapeau de fer and steel pin, described chapeau de fer covers on the head of described disc porcelain insulating part, described steel pin is positioned at described disc porcelain insulating part, and the umbrella portion that it is characterized in that described disc porcelain insulating part is three disc umbrella bodies.
2. direct current overhead transmission line suspended porcelain insulator according to claim 1, it is characterized in that, three disc umbrella bodies of described disc porcelain insulating part are along same the vertical arranged alternate of axial line, described three disc umbrella bodies are perpendicular to axial line, from near chapeau de fer to be respectively disc umbrella body one, disc umbrella body two and disc umbrella body three from top to bottom away from chapeau de fer.
3. direct current overhead transmission line suspended porcelain insulator according to claim 2 is characterized in that, the diameter of described disc umbrella body two is less than the diameter of disc umbrella body one and disc umbrella body three.
4. direct current overhead transmission line suspended porcelain insulator according to claim 3 is characterized in that the diameter of described disc umbrella body three is smaller or equal to the diameter of disc umbrella body one.
5. direct current overhead transmission line suspended porcelain insulator according to claim 2 is characterized in that, the lower surface of described disc umbrella body one and disc umbrella body two and the angle of described axial line vertical plane are not less than 3 °.
6. direct current overhead transmission line suspended porcelain insulator according to claim 5 is characterized in that the angle of the upper and lower surface of described disc umbrella body one is 7～9 °; The angle of the upper and lower surface of described disc umbrella body two is 7～9 °.
7. direct current overhead transmission line suspended porcelain insulator according to claim 5 is characterized in that, the upper surface of described disc umbrella body three and the angle of described axial line vertical plane are more than or equal to 30 °.
8. direct current overhead transmission line suspended porcelain insulator according to claim 2 is characterized in that, between described disc umbrella body one and the disc umbrella body two air gap one is arranged; Between described disc umbrella body two and the disc umbrella body three air gap two is arranged; In the described disc umbrella body three air gap three is arranged.
9. direct current overhead transmission line suspended porcelain insulator according to claim 8 is characterized in that, the shape of described air gap one, air gap two and air gap three, size are all different.
10. direct current overhead transmission line suspended porcelain insulator according to claim 2 is characterized in that, described disc umbrella body one, and the contained side that forms between disc umbrella body two and the disc umbrella body three is the circular arc limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206329645U CN201877226U (en) | 2010-11-30 | 2010-11-30 | Suspension type porcelain insulator for direct-current overhead transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206329645U CN201877226U (en) | 2010-11-30 | 2010-11-30 | Suspension type porcelain insulator for direct-current overhead transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877226U true CN201877226U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206329645U Expired - Lifetime CN201877226U (en) | 2010-11-30 | 2010-11-30 | Suspension type porcelain insulator for direct-current overhead transmission lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543322A (en) * | 2011-12-31 | 2012-07-04 | 浙江金利华电气股份有限公司 | Double-umbrella insulator |
-
2010
- 2010-11-30 CN CN2010206329645U patent/CN201877226U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543322A (en) * | 2011-12-31 | 2012-07-04 | 浙江金利华电气股份有限公司 | Double-umbrella insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215000 Industrial Park Weiting Chunhui Road No. 20 Patentee after: SUZHOU ELECTROPORCELAIN FACTORY CO., LTD. Address before: Suzhou City, Jiangsu province 215122 Industrial Park Weiting Chunhui Road No. 20 Patentee before: Suzhou Porcelain Insulator Works Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |