CN101286624A - Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm - Google Patents
Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm Download PDFInfo
- Publication number
- CN101286624A CN101286624A CNA2008100707074A CN200810070707A CN101286624A CN 101286624 A CN101286624 A CN 101286624A CN A2008100707074 A CNA2008100707074 A CN A2008100707074A CN 200810070707 A CN200810070707 A CN 200810070707A CN 101286624 A CN101286624 A CN 101286624A
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- wire jumper
- bar
- electric potential
- safety distance
- annulus
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012211 strain insulator Substances 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 230000003245 working effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 5
- 238000013213 extrapolation Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The invention relates to an overhead line live working method, in particular to a method for expanding the live working safety distance of ground potential of the cross arm of a strain tower. An insulation distance required must be kept between a jumper wire and the cross arm, the jumper wire is opened by a distance expanding bar to increase the distance between the jumper wire and the cross arm at the lower part; a distance limiting bar and the distance expanding bar guarantee the jumper wire to be fixed at a certain position so as to ensure that the operators have sufficient space to operate. Compared with the prior art, the method of the invention has the advantages that: the safety distance is expanded by using the overhead characteristic of the jumper wire to ensure that the operators have sufficient activity space on the cross arm of the strain tower; the expanding method is simple and practical and the operation is convenient so that wiremen can master the method on the basis of skill and no special learning is needed.
Description
Technical field
The present invention relates to a kind of overhead transmission line live line working method, particularly a kind of safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm.
Background technology
Because iron tower tower, the layout of lead, phase spacing are compared all inequalityly with single back line in the strain insulator transmission line of wiring on the same tower, it is compact that size seems, to a certain extent, to operating repairs work, particularly makes troubles to live line working.For example: 110KV power line tension tower wire jumper is under the operation nature, and the maximum sag of wire jumper is 1350mm, and the vertical distance in phase cross-arm closest approach is 1600mm in the last phase wire jumper distance.According to live line working regulation in " State Grid Corporation of China's electric power safety working regulation " (power circuit part), " person and the safe distance electric pressure of electrified body must not be less than 1.0 meters for 110kV person during live line working ", the live line working personnel just have only in the actual activity space on cross-arm 600mm less than, according to the routine work method, be difficult to guarantee normally carrying out of live line working.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, and provide a kind of expand safe distance, make the live line working personnel on the strain tower cross-arm, have the safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm of enough activity spaces.
The objective of the invention is to realize by following approach.
Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm, its main points are, include following steps:
1, provides a kind of live line working action bars and as the range line bar, its bar head is intersected and is connected with wire jumper, and its afterbody connected the mode of axis swing having mercy on or is connected with the cross-arm of wire jumper top or with the strain insulator string of wire jumper top be connected the gold utensil connection, this connects gold utensil between strain insulator string and cross-arm, connect the minimum range that all should keep after neutralization connects between wire jumper and the shaft tower greater than minimum range that rules limited
2, provide a kind of live line working action bars and as expanding apart from bar, with its bar head or directly be connected, or intersect and be connected with wire jumper with the range line bar,
3, extrapolation on the shaft tower expand make wire jumper be rocked to suitable distance above outwards apart from bar after, be fixed on the cross-arm of wire jumper below expanding apart from the bar afterbody.
The wire jumper of strain insulator string has certain sag and flexibility, " overhead transmission line control of acceptance " has the regulation of line jumpers and shaft tower minimum range, for example, 110kV line jumpers and shaft tower minimum range are 1100 ± 50mm, at the insulation distance of guaranteeing to keep between wire jumper and the cross-arm, utilize to expand apart from bar wire jumper to be strutted, increase wire jumper and below cross-arm distance, satisfying the operating personnel has abundant operating space when operation.When wire jumper was open, range line bar restriction wire jumper and cross-arm kept minimum safe distance greater than 1100 ± 50mm; When wire jumper was open certain distance, range line bar and expansion were fixed on certain position apart from bar common guarantee wire jumper, guarantee that the operating personnel operates in abundant space.
No matter be cross-arm, still the gold utensil that is connected between strain insulator string and cross-arm all is positioned at medium position above the wire jumper, can be used as the strutting piece of range line bar, and wire jumper after this also all relatively this two swing.
Expansion apart from the effect of bar be to promote the wire jumper swing and fixedly wire jumper and no matter be to be connected with the range line bar, or to be connected all with wire jumper and can to bring into play this effect in the position that is fit to.
The concrete distance apart from bar outside top expansion in conjunction with the concrete reality of strain tower, can be determined to expand easily in the space that those skilled in the art are required according to concrete operation.
Purpose of the present invention can also realize by following approach.
Said range line bar preferably has two or three, and distributes with the length direction central point of wire jumper, and the 3rd range line bar is distributed on the wire jumper length direction central point.
Two range line bars can be formed a kind of virtual plane, thereby the wire jumper between the range line bar is more complete, amount of movement is consistent moves into place.
Said expansion preferably has two or three apart from bar, and distributes with the length direction central point of wire jumper, and the 3rd range line bar is distributed on the wire jumper length direction central point.
Like this, can be more complete apart from the wire jumper between the bar, amount of movement is consistent moves into place with expanding, and moving process is more smooth and easy.
For the range line bar and expand apart from the concrete structure of club head multiple choices are arranged, when following wherein two kinds:
Range line club head and expand and to be fixed with the fastening wire clamp of bolt type respectively apart from club head hooks wire jumper with it and is fastened on the lead to link lead;
The fastening wire clamp of bolt type is a kind of routine techniques, use in overhead transmission line more.
Range line club head and expansion become a kind of opening fork-shaped apart from club head, and the fork pockets degree of depth connects wire jumper greater than three times of diameters of wire jumper with this fork pockets fork.
Further optimize and be: in the opening fork, be embedded with and a kind ofly bend the inner opening fork that forms, shorten reducing shape in the prong into by spring leaf.
Can the company's of pitching wire jumper is more steady lean on this inner opening fork.
Range line club head and expand apart from the afterbody of bar and have a kind of closed round ring is to be set on angle steel on the rope colligation cross-arm in the annulus to be fixed on the cross-arm.
Further optimize and be: this annulus can be and the shaft Construction integration, also can be to be positioned at a kind of pair of anti-skidding the putting of annulus and to divide body structure with shaft, anti-skidding the putting of two annulus has two annulus, and one of them annulus is the annulus securing member that can be fastened on the shaft periphery.
In sum, the present invention has following advantage compared to existing technology: the built on stilts characteristics of utilizing wire jumper, the expansion safe distance, make the live line working personnel on the strain tower cross-arm, have enough activity spaces, extended method is simple and practical, easy to operate, need not special study, learn with lineman's existing technical ability one and promptly can.
Description of drawings
Accompanying drawing 1 is the relevant wire jumper of a strain tower partial schematic diagram partly in the safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm of the present invention;
Accompanying drawing 2 is range line bars and expanding apart from bar and schematic diagram after wire jumper is connected in the safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm of the present invention;
Accompanying drawing 3 is range line bars and expands structural representation apart from a kind of bar head of bar;
Accompanying drawing 4 is the anti-shift sleeve structure schematic diagrames of two annulus;
Below in conjunction with embodiment the present invention is described further.
Specific embodiment
Most preferred embodiment:
Referring to Fig. 2, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm is applied in the 110kV circuit of two Hui Tongta, includes following steps:
1, provides two live line working action bars and as range line bar 1, range line bar 1 bar head 11 is the fastening wire clamps of a kind of bolt type, range line bar 1 afterbody is along the circumferential direction fastening to be connected with a kind of annulus securing member 31, this annulus securing member 31 with and another annulus 32 of its Construction integration constitute the anti-sliding sleeve 3 of two annulus, range line bar 1 shaft 12 is an insulating material
2, two range line bars 1 distribute with wire jumper 2 length direction central point, and link the fastening wire clamp of bolt type of range line bar 1 bar head 11 behind the wire jumper and wire jumper 2 is fastened in the wire clamp,
3, be set on rope in the annulus with the 1 afterbody colligation of range line bar in being connected on the gold utensil 6 between strain insulator string 4 and the cross-arm 5, connect the minimum range that all should keep after neutralization connects between wire jumper 2 and the shaft tower greater than minimum range 1100 ± 50mm that rules limited
4, provide two live line working action bars and conduct to expand apart from bar 7, expansion is the fastening wire clamps of a kind of bolt type apart from bar 7 bar heads 71, expansion is connected with a kind of annulus securing member 31 apart from bar 7 afterbodys are along the circumferential direction fastening, this annulus securing member 31 with and another annulus 32 of its Construction integration constitute the anti-sliding sleeve 3 of two annulus, expansion is an insulating material apart from bar 7 shafts 72
5, two expansions distribute with wire jumper 2 length direction central point apart from bar 7, and the range line bar 1 that distributes near homonymy respectively, and link behind the wire jumper and wire jumper 2 is fastened in the wire clamp expanding apart from the fastening wire clamp of bolt type of bar 7 bar heads 11,
6, the operating personnel is positioned on the cross-arm 5 of wire jumper 2 belows, extrapolation expand make wire jumper 2 outwards the top be rocked to suitable distance apart from bar 7 after, will expand apart from bar 7 afterbody colligations on the cross-arm 5 that is fixed on below the wire jumper 2 to be set on rope in the annulus.
Referring to Fig. 3, the fastening wire clamp of the bolt type of bar head is the conventional instrument in a kind of overhead transmission line operation, be made up of coupler body 81, pressing plate 82 and bolt 83, pressing plate 82 is affixed with the bolt 83 that is positioned at thereafter, and bolt 83 afterbodys connect the back and pass coupler body 83 fixedlys connected with shaft with coupler body 81 spirals.
Referring to Fig. 4, the anti-sliding sleeve 31 of two annulus is formed by annulus securing member 31 with another annulus 32 of its Construction integration, and annulus securing member 31 can be fastened on the shaft periphery wall by the adjustment screw on it.
Referring to Fig. 1, in the 110kV circuit of two Hui Tongta, the strain tower wire jumper is under the operation nature, and the maximum sag of wire jumper is C, generally is 1350mm, and phase cross-arm A point is generally 1600mm vertically apart from being D in the wire jumper distance.Guaranteeing that the situation lower support of wire jumper apart from the cross-arm minimum safe distance expands distance, record wire jumper and be E with the oblique material A point distance of middle cross-arm mutually, be specially 2150mm, when the phase cross-arm was operated during the operating personnel was sitting at this moment, the distance that wire jumper is ordered apart from operating personnel B is F, be specially 1450mm, greater than the safe distance more than 1.0 meters that the 110kV live line working requires, operating personnel's safe distance when changing insulator obtains effectively ensureing and controlling.
Present embodiment is not stated partly same as the prior art.
Claims (8)
1, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm is characterized in that, includes following steps:
Provide a kind of live line working action bars and as the range line bar, its bar head is intersected and is connected with wire jumper, and its afterbody connected the mode of axis swing having mercy on or is connected with the cross-arm of wire jumper top or with the strain insulator string of wire jumper top be connected the gold utensil connection, this connects gold utensil between strain insulator string and cross-arm, connect the minimum range that all should keep after neutralization connects between wire jumper and the shaft tower greater than minimum range that rules limited
Provide a kind of live line working action bars and as expanding apart from bar, with its bar head or directly be connected, or intersect and be connected with wire jumper with the range line bar,
Extrapolation on the shaft tower expand make wire jumper be rocked to suitable distance above outwards apart from bar after, be fixed on the cross-arm of wire jumper below expanding apart from the bar afterbody.
2, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 1, it is characterized in that, said range line bar preferably has two or three, and distributes with the length direction central point of wire jumper, and the 3rd range line bar is distributed on the wire jumper length direction central point.
3, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 1, it is characterized in that, said expansion preferably has two or three apart from bar, and distributes with the length direction central point of wire jumper, and the 3rd range line bar is distributed on the wire jumper length direction central point.
4, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 1, it is characterized in that, range line club head and expand and to be fixed with the fastening wire clamp of bolt type respectively apart from club head hooks wire jumper with it and is fastened on the lead to link lead.
5, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 1 is characterized in that, range line club head and expansion become a kind of opening fork-shaped apart from club head, and the fork pockets degree of depth connects wire jumper greater than three times of diameters of wire jumper with this fork pockets fork.
6, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 5 is characterized in that, is embedded with a kind ofly to bend the inner opening fork that forms by spring leaf in opening fork, shortens reducing shape in the prong into.
7, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 1, it is characterized in that, range line club head and expand apart from the afterbody of bar and have a kind of closed round ring is to be set on angle steel on the rope colligation cross-arm in the annulus to be fixed on the cross-arm.
8, safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm according to claim 7, it is characterized in that, this annulus can be and the shaft Construction integration, also can be to be positioned at a kind of pair of anti-skidding the putting of annulus and to divide body structure with shaft, anti-skidding the putting of two annulus has two annulus, and one of them annulus is the annulus securing member that can be fastened on the shaft periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100707074A CN101286624B (en) | 2008-03-07 | 2008-03-07 | Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100707074A CN101286624B (en) | 2008-03-07 | 2008-03-07 | Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm |
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| Publication Number | Publication Date |
|---|---|
| CN101286624A true CN101286624A (en) | 2008-10-15 |
| CN101286624B CN101286624B (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100707074A Active CN101286624B (en) | 2008-03-07 | 2008-03-07 | Safety distance extending method for live operation with earth electric potential of tension resistant tower crossarm |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474909A (en) * | 2013-09-25 | 2013-12-25 | 国网河南省电力公司平顶山供电公司 | Method for replacing multi-loop strain insulator string in drainage wire supporting distance expanding hot-line working |
| CN107826989A (en) * | 2017-11-07 | 2018-03-23 | 中国化学工程第三建设有限公司 | A kind of double tower for indirect cool tower installation hangs the installation method of adhering bar part |
| CN108183445A (en) * | 2017-12-22 | 2018-06-19 | 国家电网公司 | A kind of pipe bus jump wire structure and its pipe busbar support gold utensil |
| CN115133456A (en) * | 2022-06-23 | 2022-09-30 | 国网四川省电力公司乐山供电公司 | Cable supporting device for live working and using method |
| CN116260073A (en) * | 2023-05-16 | 2023-06-13 | 山西晋缘电力化学清洗中心有限公司 | Operation method for live replacement of 35kV linear insulator string |
-
2008
- 2008-03-07 CN CN2008100707074A patent/CN101286624B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474909A (en) * | 2013-09-25 | 2013-12-25 | 国网河南省电力公司平顶山供电公司 | Method for replacing multi-loop strain insulator string in drainage wire supporting distance expanding hot-line working |
| CN103474909B (en) * | 2013-09-25 | 2016-08-17 | 国网河南省电力公司平顶山供电公司 | Drainage thread supports the method for expansion live-line replacing multiloop strain insulator string |
| CN107826989A (en) * | 2017-11-07 | 2018-03-23 | 中国化学工程第三建设有限公司 | A kind of double tower for indirect cool tower installation hangs the installation method of adhering bar part |
| CN107826989B (en) * | 2017-11-07 | 2019-04-19 | 中国化学工程第三建设有限公司 | A kind of double tower for indirect cool tower installation hangs the installation method of adhering bar part |
| CN108183445A (en) * | 2017-12-22 | 2018-06-19 | 国家电网公司 | A kind of pipe bus jump wire structure and its pipe busbar support gold utensil |
| CN115133456A (en) * | 2022-06-23 | 2022-09-30 | 国网四川省电力公司乐山供电公司 | Cable supporting device for live working and using method |
| CN116260073A (en) * | 2023-05-16 | 2023-06-13 | 山西晋缘电力化学清洗中心有限公司 | Operation method for live replacement of 35kV linear insulator string |
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| Publication number | Publication date |
|---|---|
| CN101286624B (en) | 2010-10-27 |
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Owner name: FUJIAN ELECTRIC POWER CO., LTD. XIAMEN ELECTRIC PO Effective date: 20121218 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: XIAMEN ELECTRIC POWER INDUSTRY BUREAU FUJIAN Effective date: 20121218 |
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Free format text: CORRECT: ADDRESS; FROM: 361009 XIAMEN, FUJIAN PROVINCE TO: 100031 DONGCHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121218 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Fujian Electric Power Co., Ltd. Patentee after: Xiamen Electric Power Bureau of Fujian Electric Power Company Limited Address before: Siming Lake Road Xiamen city Fujian province 361009 No. 21 Patentee before: Xiamen Electric Power Industry Bureau Fujian |