CN201270174Y - Combined insulator - Google Patents
Combined insulator Download PDFInfo
- Publication number
- CN201270174Y CN201270174Y CNU2008201495711U CN200820149571U CN201270174Y CN 201270174 Y CN201270174 Y CN 201270174Y CN U2008201495711 U CNU2008201495711 U CN U2008201495711U CN 200820149571 U CN200820149571 U CN 200820149571U CN 201270174 Y CN201270174 Y CN 201270174Y
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- Prior art keywords
- umbrella
- composite insulator
- footpath
- umbellule
- shed
- 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 - Fee Related
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Abstract
The utility model discloses a composite insulator, which comprises a core and large sheds in equal diameter around the core. The composite insulator is characterized in that three sheds are arranged between two adjacent large sheds, diameters of the three sheds are all smaller than that of the large shed, the three sheds includes a medium shed, a secondary medium shed and a small shed, the diameter of the medium shed is larger than that of the secondary medium shed and the small shed, and the medium shed is closely disposed below the large shed. Compared with the traditional composite insulators, the composite insulator barely increase the production cost basically, does not increase the mounting cost, reduces the maintenance cost, and increases the flashover preventing capacity of the composite insulator. The composite insulator strengthens the flashover preventing capacity and is particularly adaptable to electric transmission lines of above 110kV rated voltage in heavily iced areas.
Description
Technical field
The utility model relates to the high-tension insulator field, particularly relates to the above used for transmission line suspension type rod of 110kV type composite insulator.
Background technology
Icing accumulated snow is general natural phenomena.For transmission line, icing accumulated snow will cause serious accident.China is one of the most serious country of powerline ice-covering in the world.Powerline ice-covering is very serious, and over the years, transmission line has caused repeatedly accident, and wherein main is that icing causes the insulator string flashover, and the icing overload causes that shaft tower collapses and wire fracture and damage.Behind the covering ice for insulator except that causing the mechanical breakdown, owing to covering ice for insulator or after being bridged, leakage distance shortens, and during ice-melt, icing insulator surface resistance significantly reduces, thereby cause flashover fault, and in the flashover evolution sustained arc insulator of also may burning, cause that insulator damages and electrical strength reduces.
The anti-pollution flashover ability of composite insulator is than porcelain, glass insulator height, and under equal icing condition, composite insulator flashover (tolerance) voltage ratio is much lower with the porcelain and the glass insulation substring of electric pressure.Cause the main cause of this problem to be, composite insulator is under the situation of icing, because distance is less between umbrella, the umbrella footpath is less, sleet is easy to the bridging part full skirt, shorten creepage distance, make most of voltage bear by the air gap between composite insulator high-pressure side vicinity sleet and cluster parachute, and make these air gap field intensity increase rapidly, find in the electric field emulation of Canada CIGELE and University Of Chongqing to composite insulator and traditional porcelain insulating substring, under equal icing condition, composite insulator on average exceeds about 5kV/cm than porcelain insulating substring along the face maximum field strength along the face maximum field strength, and maximum exceeds about 10kV/cm.High like this field intensity makes and to produce local arc along the air gap, adds moisture film conductivity that the ice surface produces by ice-melt again up to 100～1000 μ S/cm, makes local arc very easily run through insulator and forms flashover.At present, composite insulator electric property this problem that sharply descends has caused the extensive attention of domestic and international researcher under the icing situation.
And the composite insulator flashover problem that the composite insulator of 2 commonly used umbrellas and 3 umbrella structures can not solution icing very in full force and effect causes.
The utility model content
The purpose of this utility model is to provide a kind of icing that prevents to cause the composite insulator of flashover.
The technical solution of the utility model is:
A kind of composite insulator, the gamp that comprises plug and the some equal diameters of mandrel outer, between adjacent two gamps, be provided with three umbrellas, the umbrella of three umbrellas footpath all less than the umbrella of gamp directly, described three umbrellas are respectively and are middle umbrella, inferior middle umbrella and umbellule, the umbrella footpath of middle umbrella is greater than the umbrella footpath of umbrella in inferior and umbellule, and middle umbrella is close to the gamp arranged beneath.
Described gamp umbrella footpath scope is between 225mm～245mm.
Umbrella umbrella footpath scope is between 145mm～190mm in described.
Umbrella and umbellule umbrella footpath scope is between 90～110mm in described time.
Umbrella spacing≤the 140mm of described adjacent two gamps.
Ratio 〉=1 of umbrella spacing and umbrella overhang.
The umbrella footpath of described umbellule is less than the umbrella footpath of umbrella in inferior, and middle umbrella, inferior middle umbrella and umbellule are arranged in order from top to bottom.
The umbrella footpath of described umbellule is less than the umbrella footpath of umbrella in inferior, and middle umbrella, umbellule and inferior middle umbrella are arranged in order from top to bottom.
The umbrella of described umbellule directly equals the umbrella footpath of time middle umbrella, and middle umbrella, inferior middle umbrella and umbellule are arranged in order from top to bottom.
The utility model is set up the basic umbrella skirt construction that three umbrellas are formed composite insulator between adjacent two gamps, the voltage distributing homogeneity that has improved insulator under the various ice coating states also guarantees the self-cleaning of insulator simultaneously.
When adopting the utility model experiment, the air gap distance of sleet between umbrellas at different levels is bigger, and field intensity is reduced on the air gap, is difficult to the bridge joint air gap when making the electric arc development, and insulator is fully used along the face leakage distance.And the result of electric Field Calculation also shows, the air gap is very big along the Electric Field Distribution influence of face to the icing composite insulator, make the flashover voltage of icing composite insulator raise, must allow and reduce field intensity between the sleet air gap, make that the creepage distance of insulator is fully used, flashover path carries out from insulator surface, rather than develop along the air gap as far as possible.Therefore, the result of test and the result of electric Field Calculation are more identical, and promptly 4 complicated umbrellas of umbellate form are arranged the flashover voltage that can improve insulator effectively.
Flashover voltage of the present utility model exceeds more than the 40kV than the composite insulator flashover voltage maximum of 2 umbrella structures, on average exceeds about 35kV.This be because, the air gap that forms under the identical icing condition of insulator under the 4 umbrella structures is bigger than 2 umbrellas and 3 umbrellas, it also less than the maximum field strength under 2 umbrellas and 3 umbrellas, makes arcing voltage be higher than the arcing voltage of 2 umbrellas and 3 umbrella composite insulators along the face maximum field strength, thereby has improved its flashover voltage.Adopt the insulator of 4 umbrella structures, its surface leakage distance is fully used, except developing along the air gap near second group of full skirt electric arc of high-pressure side, all the other full skirt electric arcs are that its leakage distance has obtained sufficient application along the leakage distance development entirely during final flashover.Simultaneously, because umbrella increases, the electric arc development is not rapid, and experience repeatedly from purple electric arc to white electric arc again the arc reignition to purple electric arc extinguish the engineering of restriking again, so its flashover voltage is much higher than the insulator of 2 umbrella structures.
This product is compared with the conventional composite insulator, does not increase production cost substantially, does not increase installation cost, has reduced maintenance cost, has improved the anti-icing sudden strain of a muscle ability of composite insulator.The utility model has strengthened the anti-ice of composite insulator sudden strain of a muscle ability, and being specially adapted to the heavy icing area rated voltage is the above transmission line of 110kV.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the structural representation of embodiment three.
Embodiment
Embodiment one
As shown in Figure 1, beveled structure of the present utility model comprises the gamp 1 of the some equal diameters outside plug 5 and the plug 5, between adjacent two gamps 1, be provided with three umbrellas, the umbrella of three umbrellas footpath all less than the umbrella of gamp 1 directly, described three umbrellas are respectively and are middle umbrella 2, inferior middle umbrella 3 and umbellule 4, the umbrella footpath of middle umbrella 2 is greater than the umbrella footpath of umbrella 3 in inferior and umbellule 4, and middle umbrella 2 is close to gamps 1 arranged beneath.
Gamp 1 umbrella footpath scope is between 225mm～245mm.
Umbrella 3 and umbellule 4 umbrellas footpath scope is between 90～110mm in inferior.
Umbrella spacing≤the 140mm of adjacent two gamps 1,
Ratio 〉=1 of umbrella spacing and umbrella overhang,
The umbrella footpath of umbellule 4 is less than the umbrella footpath of umbrella 3 in inferior, and middle umbrella 2, inferior middle umbrella 3 and umbellule 4 are arranged in order from top to bottom.
Embodiment two
Be that with embodiment one difference the umbrella footpath of umbellule 4 is less than the umbrella footpath of umbrella 3 in inferior, middle umbrella 2, umbellule 4 and inferior middle umbrella 3 are arranged in order from top to bottom.
Embodiment three
Be that with embodiment one difference the umbrella of umbellule 4 directly equals the umbrella footpath of time middle umbrella 3, middle umbrella 2, inferior middle umbrella 3 and umbellule 4 are arranged in order from top to bottom.
Claims (9)
1, a kind of composite insulator, the gamp that comprises plug and the some equal diameters of mandrel outer, it is characterized in that: between adjacent two gamps, be provided with three umbrellas, the umbrella of three umbrellas footpath all less than the umbrella of gamp directly, described three umbrellas are respectively and are middle umbrella, inferior middle umbrella and umbellule, the umbrella footpath of middle umbrella is greater than the umbrella footpath of umbrella in inferior and umbellule, and middle umbrella is close to the gamp arranged beneath.
2, composite insulator according to claim 1 is characterized in that: described gamp umbrella footpath scope is between 225mm～245mm.
3, composite insulator according to claim 1 is characterized in that: umbrella umbrella footpath scope is between 145mm～190mm in described.
4, composite insulator according to claim 1 is characterized in that: umbrella and umbellule umbrella footpath scope is between 90～110mm in described time.
5, composite insulator according to claim 1 is characterized in that: the umbrella spacing≤140mm of described adjacent two gamps.
6, composite insulator according to claim 1 is characterized in that: ratio 〉=1 of umbrella spacing and umbrella overhang.
7, according to arbitrary described composite insulator of claim 1-6, it is characterized in that: the umbrella footpath of described umbellule is less than the umbrella footpath of umbrella in inferior, and middle umbrella, inferior middle umbrella and umbellule are arranged in order from top to bottom.
8, according to arbitrary described composite insulator of claim 1-6, it is characterized in that: the umbrella footpath of described umbellule is less than the umbrella footpath of umbrella in inferior, and middle umbrella, umbellule and inferior middle umbrella are arranged in order from top to bottom.
9, according to arbitrary described composite insulator of claim 1-6, it is characterized in that: the umbrella of described umbellule directly equals the umbrella footpath of time middle umbrella, and middle umbrella, inferior middle umbrella and umbellule are arranged in order from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201495711U CN201270174Y (en) | 2008-10-07 | 2008-10-07 | Combined insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201495711U CN201270174Y (en) | 2008-10-07 | 2008-10-07 | Combined insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201270174Y true CN201270174Y (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201495711U Expired - Fee Related CN201270174Y (en) | 2008-10-07 | 2008-10-07 | Combined insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201270174Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290160A (en) * | 2011-09-02 | 2011-12-21 | 抚顺电瓷制造有限公司 | +/-1120 kV direct-current rod porcelain insulator |
| CN103123833A (en) * | 2013-02-05 | 2013-05-29 | 宜兴市溢洋墨根材料有限公司 | Overhung composite insulator for supergrid |
| CN103559961A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | 110kV-voltage-level anti-icing composite insulator |
| CN114783703A (en) * | 2022-04-18 | 2022-07-22 | 湖南防灾科技有限公司 | Anti-icing shed for 500kV line lightning protection composite insulator |
-
2008
- 2008-10-07 CN CNU2008201495711U patent/CN201270174Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290160A (en) * | 2011-09-02 | 2011-12-21 | 抚顺电瓷制造有限公司 | +/-1120 kV direct-current rod porcelain insulator |
| CN103123833A (en) * | 2013-02-05 | 2013-05-29 | 宜兴市溢洋墨根材料有限公司 | Overhung composite insulator for supergrid |
| CN103123833B (en) * | 2013-02-05 | 2015-07-22 | 宜兴市溢洋墨根材料有限公司 | Overhung composite insulator for supergrid |
| CN103559961A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | 110kV-voltage-level anti-icing composite insulator |
| CN114783703A (en) * | 2022-04-18 | 2022-07-22 | 湖南防灾科技有限公司 | Anti-icing shed for 500kV line lightning protection composite insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091113 Address after: No. 85 South Songshan Road, Henan, Zhengzhou Province, China: 450052 Co-patentee after: HENAN ELECTRIC POWER Research Institute Patentee after: Xinyang Power Supply Company of Henan Electric Power Corp. Co-patentee after: HENAN EPRI ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: No. 88, Jianshe Road, Xinyang, Henan Province, zip code: 464000 Co-patentee before: HENAN ELECTRIC POWER Research Institute Patentee before: Xinyang Power Supply Company of Henan Electric Power Corp. |
|
| ASS | Succession or assignment of patent right |
Owner name: HE'NAN ELECTRIC POWER CORPORATION, ELECTRIC POWER Free format text: FORMER OWNER: HE'NAN ELECTRIC POWER CORPORATION, ELECTRIC POWER RESEARCH INSTITUTE HE'NAN EPRI ELECTRIC TECHNOLOGY CO., LTD. Effective date: 20130130 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450052 Songshan South Road, Henan, No. 85, No. Patentee after: Xinyang Power Supply Company of Henan Electric Power Corp. Patentee after: HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: HENAN EPRI ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: 450052 Songshan South Road, Henan, No. 85, No. Patentee before: Xinyang Power Supply Company of Henan Electric Power Corp. Patentee before: HENAN ELECTRIC POWER Research Institute Patentee before: HENAN EPRI ELECTRIC POWER TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130130 Address after: 450052 Songshan South Road, Henan, No. 85, No. Patentee after: Xinyang Power Supply Company of Henan Electric Power Corp. Patentee after: HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: HENAN EPRI ELECTRIC POWER TECHNOLOGY Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 450052 Songshan South Road, Henan, No. 85, No. Patentee before: Xinyang Power Supply Company of Henan Electric Power Corp. Patentee before: HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee before: HENAN EPRI ELECTRIC POWER TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20171007 |