CN202094572U - Anti-corona ball for squirrelcage rigid jumping device - Google Patents
Anti-corona ball for squirrelcage rigid jumping device Download PDFInfo
- Publication number
- CN202094572U CN202094572U CN2011201707558U CN201120170755U CN202094572U CN 202094572 U CN202094572 U CN 202094572U CN 2011201707558 U CN2011201707558 U CN 2011201707558U CN 201120170755 U CN201120170755 U CN 201120170755U CN 202094572 U CN202094572 U CN 202094572U
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- China
- Prior art keywords
- corona
- ball
- end part
- dizziness ball
- utility
- 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
- 230000009191 jumping Effects 0.000 title abstract 3
- 208000002173 dizziness Diseases 0.000 claims description 35
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 abstract description 17
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000005684 electric field Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 18
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 7
- 239000010931 gold Substances 0.000 description 7
- 229910052737 gold Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000239290 Araneae Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model relates to an anti-corona ball for a squirrelcage rigid jumping device, belonging to the field of overhead installation of wires or cables. The anti-corona ball is suitable to be installed in a clip of the spacer of the squirrelcage rigid jumping end part of a 750kV power transmission line, so that the curvature radius of contact position of the end part of the spacer and the wire can be indirectly enlarged, so the appearance of the clip is provided with an regular circular surface, further, the distribution of the electrical field strength on the surface of the end part of the spacer can be effectively improved, the occurrence of the corona discharge phenomenon at the end part can be suppressed, the corona noise and the corona loss of the power transmission line can be reduced, and the energy-saving and noise-reduction can be achieved. The corona ball comprises semi-spherical housings and a bolt, wherein the two semi-spherical housings are fastened together through the bolt in an embedding way. The anti-corona ball disclosed by the utility model has small size and light weight, is convenient to install, is free from disassembling other hardware fittings on the original line, and is convenient to operate and maintain.
Description
Technical field
The utility model belongs to the built on stilts installing area of electric wire or cable, specifically relates to a kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device.
Background technology
Corona noise is by conductor partial discharge or corona and produce, and the height of it and electric pressure is closely related, the electric pressure height, and the electrical wiring complexity, then the local field strength on energized conductor surface is high more, the easy more generation of partial discharge or corona.The generation of corona is because rough conductor produces uneven electric field, near the electrode that radius of curvature is little around non-uniform electric field, when voltage is elevated to certain value, electrode surface electric field strength surpasses the breakdown strength of air molecule will discharge, and forms corona.Corona is wanted consumed energy, and the pulse electromagnetic wave that corona discharge produces can produce interference to radio and HF communication, and conductive surface is corroded, thereby reduces the useful life of conductor.At present, the electromagnetic environment problem has become transmission line design, construction and the key factor that must consider in service.
The design of charged gold utensil is relevant with its surface work field intensity with applicable elements, and the work field intensity is higher than the bloom field intensity when the surface, will produce corona discharge on the gold utensil surface.The size and the gold utensil structure of gold utensil work field intensity are closely related, studies show that the position that gold utensil surface curvature radius is more little, under identical voltage effect, its surface work field intensity is high more, the easy more corona discharge that occurs in this place, thereby produce corona noise and electric energy loss, be unfavorable for energy-conserving and environment-protective.
Transmission line is under nominal operating conditions, and the periphery of lead and gold utensil can produce bigger electric field strength.By single back transmission line corona of the typical 750kV of part and noise field measurement are found, on the conductor spacer of middle phase squirrel-cage rigid jumper end, corona discharge phenomenon in various degree appears generally.Trace it to its cause, be that there is the less position of radius of curvature in the wire clamp surface of end part interval rod, thereby under rated voltage, its surface field distortion is more serious, the work field intensity has surpassed the bloom field intensity, thereby corona discharge occurred, and the phenomenon that corona discharge takes place at this place is more serious.
The method of control corona is mainly by the special construction design of squirrel-cage rigid jumper device is realized at present, for example Granted publication number is CN201008028Y, denomination of invention is the utility model patent of " squirrel-cage rigid jumper device ", and its technical scheme is: bridle wire apparatus is fixed a plurality of many lead division conductor spacers and at least one suspention connector on tube connector; The technical problem that solves is: reduce line fault, the generation of control corona improves wire jumper stability, reduces the wire jumper creep strength, improves the electric property and the operational reliability of electric power system.And for example Granted publication number is CN201252379Y, denomination of invention is the utility model patent of " the hard bridle wire apparatus of extra-high voltage direct-current six division squirrel-cage ", its technical scheme is: be provided with six division conductor spacers on the steel spider, drainage thread passes six division conductor spacers, on drainage thread, be provided with the flexible jumper conductor spacer, and drainage thread is fixed by the flexible jumper conductor spacer, is provided with suspension member on the steel spider; Advantages such as its bridle wire apparatus performance simple in structure, anticorona is good.
Above-mentioned technology mainly is the improvement at the bridle wire apparatus structure, and its improvement effect is limited.
The utility model content
For overcoming the defective of prior art, the purpose of this utility model is to propose a kind of anti-dizziness ball of the 750kV of being used for transmission line squirrel-cage rigid jumper end part interval rod, by anti-dizziness ball being installed on the wire clamp of conductor spacer, make the well-regulated circular surface of wire holder, improve the distribution of conductor spacer end surface electric field strength, suppress the generation of end corona discharge phenomenon, reduce transmission line corona noise and corona loss, play the effect of energy-saving and noise-reducing.
For achieving the above object, the utility model is by the following technical solutions:
A kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device, its improvements are that described anti-dizziness ball comprises hemispherical shell and bolt; Described anti-dizziness ball inner hollow, described anti-dizziness ball is provided with the lead wire hole in two ends up and down.
Another optimal technical scheme of the present utility model is: described hemispherical shell number is two.
Another optimal technical scheme of the present utility model is: described bolt is fixedly connected with described two hemispherical shells by embedded mode.
Another optimal technical scheme of the present utility model is: described bolt is triangularly arranged in described anti-dizziness ball.
An optimal technical scheme more of the present utility model is: the diameter D2 of described lead wire hole is greater than diameter of wire 2-3mm.
Owing to adopted technique scheme, compared with prior art, the beneficial effects of the utility model comprise:
1, effectively suppresses the corona discharge phenomenon, play the effect of energy-saving and noise-reducing
The outer surface radius of hemispherical shell is that R is not less than 50mm, inside dimension is relevant with the conductor spacer size that matches, wherein hollow space is greater than conductor spacer wire clamp head dimensions, the size of D1 is greater than the arm size of conductor spacer wire clamp, guarantee that anti-dizziness ball can be with the complete shielding of wire clamp head, and can not apply extra pressure the wire clamp arm; The lead wire hole is left at the two ends of spherical shell;
The design of anti-dizziness ball makes the complete conductively-closed of wire clamp, and indirect increase wire clamp surface curvature radius is evenly distributed its surface field, can effectively suppress the corona discharge of 750kV transmission line squirrel-cage rigid jumper end part interval rod; Prevented and treated because noise and the electric energy loss that corona produces;
2, simple in structure, volume is little, in light weight, easy for installation
Anti-dizziness ball described in the utility model is made up of hemispherical shell and bolt, and bolt tightens together two dome-type housings by embedded mode; Simple in structure, do not need during installation other gold utensil element on the former circuit is dismantled, anti-dizziness ball is formed by the aluminum alloy materials casting, and material is light; And the anti-dizziness ball course of processing is optimized, and production cost is low.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the anti-dizziness ball overall schematic;
Fig. 2 is the end view and the profile of anti-dizziness ball (hemisphere);
Fig. 3 is the vertical view and the profile of anti-dizziness ball (hemisphere);
Reference numeral:
The 1-hemispherical shell, the 2-bolt;
R represents the outer surface radius of hemispherical shell, and D1 represents the junction of anti-dizziness ball and wire clamp, and D2 represents the diameter of lead wire hole, and φ represents the diameter of bolt.
Embodiment
The utility model utilization three-dimensional finite element is set up squirrel-cage rigid jumper Simulation Calculation, distributes by analyzing wire jumper end part interval rod surface field, takes suitable optimized Measures, has invented a kind of squirrel-cage rigid jumper end part interval rod anti-dizziness ball.Through laboratory high-voltage corona test and hanging net operation checking on the pilot circuit, this anti-dizziness ball has good anti-corona performance, can effectively reduce line corona noise and corona loss; And be applicable to the high altitude localities, the electromagnetic environment of improving the high altitude localities transmission line is played significant effect.
Below in conjunction with specific embodiment, anti-dizziness ball described in the utility model is further detailed:
Embodiment 1:
As shown in Figure 1, this anti-dizziness ball overall schematic, the ball-type shell, inner hollow is formed by the aluminum alloy materials casting, and anti-dizziness ball can be divided into two parts: hemispherical shell 1, bolt 2.The end view of anti-dizziness ball (hemisphere) and profile as shown in Figure 2, the vertical view of anti-dizziness ball (hemisphere) and profile are as shown in Figure 3.
The outer surface radius of hemispherical shell 1 is that R is not less than 50mm, and inside dimension is relevant with the conductor spacer size that matches, and wherein hollow space is greater than conductor spacer wire clamp head dimensions.The size of D1 is greater than the arm size of conductor spacer wire clamp, guarantees that anti-dizziness ball can be with the complete shielding of wire clamp head, and can not apply extra pressure to the wire clamp arm.
The lead wire hole is left at the two ends up and down of hemispherical shell 1, and the diameter D2 of wire hole is than the big 2-3mm of the diameter of wire that penetrates, and the diameter of lead wire hole is 30-36mm usually.
Totally three on bolt 2 is triangularly arranged.The diameter of bolt 2 is φ=21mm, by embedded mode two hemispherical shells is tightened together.
The utility model is described according to specific exemplary embodiment herein.To carry out suitable replacement under the scope of the present utility model or revise will be conspicuous not breaking away to one skilled in the art.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present utility model, scope of the present utility model is by appended claim definition.
Claims (5)
1. an anti-dizziness ball that is used for squirrel-cage rigid jumper device is characterized in that, described anti-dizziness ball comprises hemispherical shell (1) and bolt (2); Described anti-dizziness ball inner hollow, described anti-dizziness ball is provided with the lead wire hole in two ends up and down.
2. a kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device as claimed in claim 1 is characterized in that, described hemispherical shell (2) number is two.
3. a kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device as claimed in claim 1 or 2 is characterized in that described bolt (2) is fixedly connected with two described hemispherical shells (1) by embedded mode.
4. a kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device as claimed in claim 1 is characterized in that described bolt (2) is triangularly arranged in described anti-dizziness ball.
5. a kind of anti-dizziness ball that is used for squirrel-cage rigid jumper device as claimed in claim 1 is characterized in that the diameter of described lead wire hole (D2) is greater than diameter of wire 2-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201707558U CN202094572U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for squirrelcage rigid jumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201707558U CN202094572U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for squirrelcage rigid jumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094572U true CN202094572U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201707558U Expired - Lifetime CN202094572U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for squirrelcage rigid jumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094572U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN103837710A (en) * | 2014-03-12 | 2014-06-04 | 国家电网公司 | Anti-corona device of electronic measurement system under ultrahigh voltage electric field environment |
-
2011
- 2011-05-25 CN CN2011201707558U patent/CN202094572U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN103837710A (en) * | 2014-03-12 | 2014-06-04 | 国家电网公司 | Anti-corona device of electronic measurement system under ultrahigh voltage electric field environment |
| CN103837710B (en) * | 2014-03-12 | 2017-12-01 | 国家电网公司 | The corona-proofing device of electronic measurement system under a kind of extra-high voltage electric field environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140326 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140326 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |