CN201430408Y - Lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for power transmission conducting wire - Google Patents
Lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for power transmission conducting wire Download PDFInfo
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- CN201430408Y CN201430408Y CN2009200972084U CN200920097208U CN201430408Y CN 201430408 Y CN201430408 Y CN 201430408Y CN 2009200972084 U CN2009200972084 U CN 2009200972084U CN 200920097208 U CN200920097208 U CN 200920097208U CN 201430408 Y CN201430408 Y CN 201430408Y
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Abstract
The utility model relates to a lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for a power transmission conducting wire; and two lightningconductors are mounted in parallel between adjacent power transmission towers. The lightning attraction device is characterized in that a conductive clamp is fixedly mounted on each lightning conductor at least; an insulated sleeve lightning attractor is fixedly mounted on each conductive clamp; insulated sleeve lightning attractors fixedly mounted on the two lightning conductors are distributed in a staggered manner; a steel bar counterweight is fixedly mounted on the lower end surface of the clamp to maintain the lightning attractor upward and perpendicular to the lightning conductor; and the lightning attractor and a segment of lightning conductor at the mounting part of the lightning attractor form an inverted cross in shape. The utility model has the advantages that the structure is simple; the cost is low; and the insulated sleeve lightning attractor with stronger lightning attraction capability and the lightning conductor are combined to form the lightning attraction device withwider protection range, thereby reducing the tripping operation due to lightning disturbance; the protective effect of lightning prevention of the circuit is further improved; and the utility model solves the technical difficult problem of circuit tripping operation caused by lightning shielding-failure conducting wire.
Description
Technical field
The utility model belongs to the anti-lightning strike technical field of power transmission line, especially a kind of anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure.
Background technology
Currently be struck by lightning less for the lead of protecting transmission line, what generally adopt is to set up lightning conducter, China power industry standard DL/T 620-1997 " overvoltage protection of alternating-current electric device and insulation coordination " 6.1.2 bar regulation: 110kV is along setting up lightning conducter completely, in mountain area and the special strong area of lightening activity, should be along setting up installation of dual lightning wires completely; 220kV and above circuit should set up installation of dual lightning wires completely.The structure of this lightning conducter is as shown in Figure 1: the top spaced and parallel of left transmission tower 1 above three-phase power transmission lead 5 and right transmission tower 6 is installed two exposed steel strand wire, should exposed steel strand wire both be first lightning conducter 4 and second lightning conducter 3, these two lightning conducters be by the transmission tower and the earth 7 conductings of both sides.But since existing lightning conducter draw the thunder scarce capacity, after transmission line has adopted every conventional lightning protection measures, the damage to crops caused by thunder tripping operation of transmission line is still a lot, ground transmission lines such as external and China Fujian, Guangdong, Hubei, northeast, the North China number of times statistics that trips, in the tripping operation number of times that a variety of causes causes, damage to crops caused by thunder tripping operation time number average accounts for position first of total tripping operation number of times.For example: " high voltage technique " 2008 the 1st phases, 2002～2004 years nationwide integrated power grid fault statistics tables that Yi Hui " China's transmission line operation present situation and lightning protection " literary composition provides, in the line tripping total degree 231 that 9 kinds of reasons cause, damage to crops caused by thunder tripping operation 129 times, account for 55.8% of total degree, rank first; And for example: the above overhead transmission line of the 35kV of State Grid Corporation of China tripped 442 times altogether in 2005～2007 years, and wherein lightning stroke trip is 198 times, accounts for 44.8% of total degree, also ranks first.Transmission line operation statistics shows: the trip-out rate that the circuit thunderbolt in the plains region causes is suitable substantially with the trip-out rate that counterattack causes; And strengthen because of with a varied topography, the influence of the angle of gradient, the throw that the span span is big, wind makes lightning conducter and lead at mountain route; even lead the opposite swing of direction occurs with lightning conducter; lightning conducter and lead horizontal range are strengthened; be that lightning conducter is big to the shielding angle change of lead, cause risk of shielding failure more much bigger than risk of flashback.For example: " high voltage technique " 1998 the 6th phases, Wang Qingjun, Liu Wenhai " the Anhui 500kV transmission line caused by lightning strike analysis of causes " literary composition provides 2002～2003 years, Anhui 500kV transmission line caused by lightning strike 9 times, account for total tripping operation number and be about 70%, and in 9 lightning stroke trips, be shielding 7 times, the shielding tripping operation accounts for 78% of lightning stroke trip.The circuit of above-mentioned generation lightning stroke trip accident has all set up lightning conducter and has adopted conventional various shocking preventing technology measures, and visible existing various shocking preventing technology measures can not guarantee the safe operation of transmission line.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, with low cost and attract that the thunder and lightning ability is strong, protection radius is big, can effectively protect the anti-thunder and lightning shielding thunder carrying-off device of the installation of dual lightning wires that is used for transmission pressure of transmission pressure.
The technical scheme that the utility model is taked is:
A kind of anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure, parallel between adjacent transmission tower two lightning conducters are installed, it is characterized in that: install a conduction clamp on the every lightning conducter at least, install an insulating case cast attracting thunder needle in conduction on the clamp, the insulating case cast attracting thunder needle that installs on two lightning conducters is and is dislocatedly distributed.
And, described conduction clamp is made up of last clamp plate and the mutual spiral-lock of following clamp plate, install insulating case cast attracting thunder needle on the last clamp plate, between upper and lower clamp plate, clamp lightning conducter, on the inwall of the upper and lower clamp plate that clamps lightning conducter, be shaped on the striped of locking lightning conducter.
And, described insulating case cast attracting thunder needle is installed successively by epimere conductive pin, cylinder rod iron, stage casing conductive pin and hypomere conductive pin to be formed, common overcoat one insulating sleeve of described epimere conductive pin and cylinder rod iron, this insulating sleeve and epimere conductive pin are matched in clearance, with the cylinder rod iron for closely cooperating, being shaped on osculum on the sidewall of this insulating sleeve with respect to position, epimere conductive pin bottom, fixedlys connected with the last clamp plate upper surface of conduction clamp in the bottom of described hypomere conductive pin.
And, the lower surface of the following clamp plate of described conduction clamp install one with the coaxial balancing weight of insulating case cast attracting thunder needle.
And, be fixed with the rainproof shirt rim of umbrella shape on the outer wall of described insulating sleeve.
Advantage of the present utility model and good effect are:
1. the insulating case cast attracting thunder needle in this thunder carrying-off device vertically is installed on the lightning conducter by a conduction clamp, fixedlys connected with the upper surface of conduction clamp in the bottom of this insulating case cast attracting thunder needle.This insulating case cast attracting thunder needle belongs to prior art; it mainly is used in power station, transformer station, petroleum tank region, microwave tower, the important place that is vulnerable to be struck by lightning such as inflammable, explosive; because it draws thunder ability extra-heavy; its lightning protection is more most doubly than common lightning rod; than lightning conducter bigger several times just; so on lightning conducter, install insulating case cast attracting thunder needle additional; just can improve several times, can solve the damage to crops caused by thunder tripping operation that the thunderbolt transmission pressure is caused efficiently the lightning protection effect of transmission pressure.
2. by a conduction clamp insulating case cast attracting thunder needle and lightning conducter are solidly installed in this thunder carrying-off device, and on the inwall of conductive clip hoop clip dress lightning conducter position, are shaped on the striped that to lock lightning conducter.This structure can effectively be avoided taking place between the two to slide and twisting, has improved whole steadiness.
3. installation one of the below of the conduction clamp in this thunder carrying-off device and the coaxial balancing weight of insulating case cast attracting thunder needle, the effect of this balancing weight is that insulating case cast attracting thunder needle is kept straight up in wind and rain weather.This balancing weight is installed in down on the bolt column that clamp plate lower surface installs and by clamping screw and fixes, and it is shaped as cylindrical, and the corner that do not have is beneficial to avoid taking place corona, and its weight is 3～5 times of insulating case cast attracting thunder needle total weight.
4. the insulating case cast attracting thunder needle in this thunder carrying-off device is installed successively by last conductive pin, cylinder rod iron, middle conductive pin and following conductive pin and forms, at last conductive pin and outside common suit one insulating sleeve of cylinder rod iron, this insulating sleeve and last conductive pin are matched in clearance, with the cylinder rod iron for closely cooperating, the height of this insulating sleeve is higher than the total height of conductive pin and cylinder rod iron.The shielding angle of said structure is greater than 90 °, but its high slightly protected object of protective ratio.
5. this thunder carrying-off device is under the condition of economical rationality such as mechanical strength; suitably increase the height of insulating case cast attracting thunder needle and be installed on the lightning conducter suitable distance apart from shaft tower; also can protect shaft tower to avoid thunderbolt; make the thunderbolt cat head and the damage to crops caused by thunder tripping operation minimizing that " counterattack " caused takes place, improve the lightning withstand level of transmission line greatly.Particularly higher to soil resistivity, it is more remarkable that pole tower ground resistance is difficult to reduce regional transmission line lightning protection effect.
6. the thunder ability of the drawing extra-heavy of the insulating case cast attracting thunder needle in this thunder carrying-off device; protection range is very big; for high pressure and extra high voltage network; in each span of online Louis thunderbolt section; only need on its lightning conducter, to install 2～8 insulating case cast attracting thunder needles; just guardwire is avoided thunderbolt reliably, so required insulating case cast attracting thunder needle quantity seldom.For example: standard file is apart from be the 220kV installation of dual lightning wires circuit of 400m, on every lightning conducter of a span, only needs to install 1, highly is the insulating case cast attracting thunder needle of 4m, just can satisfy the requirement of preventing shielding fully.
7. the total weight of the insulating case cast attracting thunder needle in this thunder carrying-off device is no more than 25kg, is inappreciable to the load-carrying ability of lightning conducter, its structure and uncomplicated, and requirement is few again, so its material and installation cost are lower.
8. the utility model is simple in structure; with low cost; the stronger insulating tube type attracting thunder needle of thunder ability is drawn in employing and lightning conducter is combined into the bigger thunder carrying-off device of protection range; solved the technical barrier that the thunderbolt lead causes line tripping; after trial run obtains satisfied lightning protection effect; just can be when newly-built transmission line designs; the shielding angle of lightning conducter is suitably amplified; reduce the vertical range between lightning conducter and transmission pressure; the further coupling and the shielding action of performance lightning conducter; improve the lightning withstand level of circuit; reduce the damage to crops caused by thunder tripping operation, line thunder protection protection effect is further improved.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation after lightning conducter and the assembling of insulating case cast attracting thunder needle;
Fig. 3 is that the A-A of Fig. 2 is to cutaway view;
Fig. 4 is the structural representation of Application Example 2.
Embodiment
Below in conjunction with embodiment, the utility model is further specified, following embodiment is illustrative, is not determinate, can not limit protection range of the present utility model with following embodiment.
A kind of anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure, shown in Fig. 1～3, parallel first lightning conducter 4 and second lightning conducter 3 of being equipped with between adjacent left transmission tower 1 and right transmission tower 6, innovation of the present utility model is: every lightning conducter installs a conduction clamp at least, install on the clamp to be between the insulating case cast attracting thunder needle that is provided with on the insulating case cast attracting thunder needle that is provided with on an insulating case cast attracting thunder needle 2, the first lightning conducters and second lightning conducter in conduction and be dislocatedly distributed.This conduction clamp is made up of last clamp plate 18 and following clamp plate 19 that the steel plate compacting forms, its length is 400～700 millimeters, thickness is 1～3 millimeter, clamp lightning conducter in this upper and lower clamp plate and lock by bolt, on the inwall of upper and lower clamp plate and lightning conducter contact, be shaped on and the recessed identical protrusion curve striped of curve striped in lightning conducter surface, so that the two closely interlock contact, the clamp that prevents from better to conduct electricity is slided and twisting.The upper surface that should go up the clamp plate installs the bottom of insulating case cast attracting thunder needle, and the lower surface of this time clamp plate is provided with a bolt column 21, and a balancing weight 20 coaxial with insulating case cast attracting thunder needle is connected with a joggle on this bolt column.This balancing weight is that round steel bar or cast iron are made, its weight is 3～5 times of part total weight such as insulating case cast attracting thunder needle, and it is shaped as cylindrical, and the corner does not have, to avoid taking place corona, its main purpose is that insulating case cast attracting thunder needle is kept straight up in wind and rain weather.
Insulating case cast attracting thunder needle is installed successively by epimere conductive pin 23, cylinder rod iron 24, stage casing conductive pin 13 and hypomere conductive pin 16 to be formed, and the annexation to each structure is described respectively below:
Epimere conductive pin, stage casing conductive pin and hypomere conductive pin be shaped as pole or pipe, three's diameter value is in 15 millimeters scopes of φ 6～φ, three's diameter can equate.Three's material can use steel, stainless steel, aluminium alloy or copper.The upper end of epimere conductive pin is the circular cone of 10～15 ° of drift angles, and the total height of epimere conductive pin, stage casing conductive pin, hypomere conductive pin and cylinder rod iron is 0.3～7 meter.The bottom welding cylindrical rod iron of epimere conductive pin wherein, the lower end of this cylinder rod iron is welded in first connecting plate 11, first connecting plate is fixed together by the bolt and second connecting plate 12, the upper end of welding stage casing conductive pin in this second connecting plate, the bottom of this stage casing conductive pin is welded in the 3rd connecting plate 14, the 3rd connecting plate is fixed together by bolt and the 4th connecting plate 15, the upper end of welding hypomere conductive pin in the 4th connecting plate, the bottom of this hypomere conductive pin is welded on the upper surface of clamp plate, after the said structure installation, on, in, the hypomere conductive pin is a conducting state with conduction clamp and lightning conducter.
Common suit one insulating sleeve 8 on epimere conductive pin and cylinder rod iron, its internal diameter is identical with the external diameter of cylinder rod iron, but bigger 2～8 millimeters than the external diameter of epimere conductive pin, and its aspect ratio epimere conductive pin is high 10～40 millimeters.This insulating sleeve bonds together by seccotine and cylinder rod iron and first connecting plate and is locked on the cylinder rod iron by bolt.This insulating sleeve is made by expoxy glass steel pipe, silicon rubber, high strength hard plastics or polymethyl methacrylate, phenol glue stringing.On the outer wall of insulative, install one and support annulus 22, be fixed with the rainproof shirt rim 10 of the umbrella shape of making by fiber glass epoxy, high strength hard plastics or polymethyl methacrylate, silastic material on this support annulus.Be shaped on 3～4 osculums 9 on the sidewall of insulating sleeve with respect to epimere conductive pin bottom, in order to be easy to draining, this osculum is to the through hole of outer wall with 45 ° of inclinations by the insulating sleeve inwall.
And the 4th connecting plate that installs of hypomere conductive pin upper end and last clamp plate between two support sticks 17 are installed, its upper end is welded on the 4th connecting plate, its lower end is welded on the upper surface of clamp plate, every support stick is the round steel bar of φ 4～φ 8, and its main purpose is to reduce the suffered torsion of hypomere conductive pin.
Application Example 1
The structure that the 220kV standard file is installed insulating case cast attracting thunder needle apart from the installation of dual lightning wires circuit of 400m is as shown in Figure 1: on first lightning conducter 4 at 80m place, left transmission tower right side, 1 insulating case cast attracting thunder needle 2 that 4m is high is installed; On second lightning conducter 3 at 80m place, right transmission tower left side apart from this span, 1 insulating case cast attracting thunder needle that 4m is high is installed, 2 insulating case cast attracting thunder needles promptly are installed altogether, and these two insulating case cast attracting thunder needles are and are dislocatedly distributed in a span.Wherein the structure of each insulating case cast attracting thunder needle is: the total height of epimere conductive pin and cylinder rod iron is 0.8 meter; the external diameter of epimere conductive pin is 13 millimeters; the internal diameter of insulating sleeve is 17 millimeters; the height of stage casing conductive pin is 1.2 meters; the height of hypomere conductive pin is 2 meters; through thunderbolt simulated experiment test, can protect the interior transmission pressure of this span to avoid shielding damage to crops caused by thunder effectively.
Application Example 2
As shown in Figure 4, should not be both with embodiment and Application Example 1: the retaining between two transmission towers is apart from bigger, so two insulating case cast attracting thunder needles are installed on every lightning conducter.These four insulating case cast attracting thunder needles are and are dislocatedly distributed, and other is identical with Application Example 1.
Claims (5)
1, a kind of anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure, parallel between adjacent transmission tower two lightning conducters are installed, it is characterized in that: install a conduction clamp on the every lightning conducter at least, install an insulating case cast attracting thunder needle in conduction on the clamp, the insulating case cast attracting thunder needle that installs on two lightning conducters is and is dislocatedly distributed.
2, the anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure according to claim 1, it is characterized in that: described conduction clamp is made up of last clamp plate and the mutual spiral-lock of following clamp plate, install insulating case cast attracting thunder needle on the last clamp plate, between upper and lower clamp plate, clamp lightning conducter, on the inwall of the upper and lower clamp plate that clamps lightning conducter, be shaped on the striped of locking lightning conducter.
3, the anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure according to claim 1, it is characterized in that: described insulating case cast attracting thunder needle is by the epimere conductive pin, the cylinder rod iron, stage casing conductive pin and hypomere conductive pin install composition successively, common overcoat one insulating sleeve of described epimere conductive pin and cylinder rod iron, this insulating sleeve and epimere conductive pin are matched in clearance, with the cylinder rod iron for closely cooperating, being shaped on osculum on the sidewall of this insulating sleeve with respect to position, epimere conductive pin bottom, fixedlys connected with the last clamp plate upper surface of conduction clamp in the bottom of described hypomere conductive pin.
4, the anti-thunder and lightning shielding thunder carrying-off device of the installation of dual lightning wires that is used for transmission pressure according to claim 2 is characterized in that: the lower surface of the following clamp plate of described conduction clamp install one with the coaxial balancing weight of insulating case cast attracting thunder needle.
5, the anti-thunder and lightning shielding thunder carrying-off device of installation of dual lightning wires that is used for transmission pressure according to claim 3 is characterized in that: be fixed with the rainproof shirt rim of umbrella shape on the outer wall of described insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200972084U CN201430408Y (en) | 2009-06-18 | 2009-06-18 | Lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for power transmission conducting wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200972084U CN201430408Y (en) | 2009-06-18 | 2009-06-18 | Lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for power transmission conducting wire |
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| Publication Number | Publication Date |
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| CN201430408Y true CN201430408Y (en) | 2010-03-24 |
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| CN2009200972084U Expired - Lifetime CN201430408Y (en) | 2009-06-18 | 2009-06-18 | Lightning-prevention and shielding-failure lightning attraction device with double lightning conductors used for power transmission conducting wire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956705A (en) * | 2014-04-10 | 2014-07-30 | 国家电网公司 | Full-coverage-type lightning protection device for overhead transmission lines |
| CN104538922A (en) * | 2015-01-29 | 2015-04-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Lighting protection method and lighting protection device for convertor station |
-
2009
- 2009-06-18 CN CN2009200972084U patent/CN201430408Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956705A (en) * | 2014-04-10 | 2014-07-30 | 国家电网公司 | Full-coverage-type lightning protection device for overhead transmission lines |
| CN104538922A (en) * | 2015-01-29 | 2015-04-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Lighting protection method and lighting protection device for convertor station |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN ELECTRIC POWER CORP. Effective date: 20130524 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: TIANJIN ELECTRIC POWER CORP. Effective date: 20130524 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 300010 HEBEI, TIANJIN TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130524 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Tianjin Electric Power Corp. Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee before: Tianjin Electric Power Corp. |
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Granted publication date: 20100324 |