CN204558175U - Overhead transmission line straight line pole lightning protection device - Google Patents
Overhead transmission line straight line pole lightning protection device Download PDFInfo
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- CN204558175U CN204558175U CN201520292762.3U CN201520292762U CN204558175U CN 204558175 U CN204558175 U CN 204558175U CN 201520292762 U CN201520292762 U CN 201520292762U CN 204558175 U CN204558175 U CN 204558175U
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- lightning arrester
- angle steel
- electric discharge
- lightning
- discharge ring
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 57
- 239000010959 steel Substances 0.000 claims description 57
- 230000002787 reinforcement Effects 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 abstract description 7
- 208000025274 Lightning injury Diseases 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The overhead transmission line straight line pole lightning protection device that the utility model provides, lightning arrester upper end and support Bolted angle connection are to be fixed on the cross-arm of straight line pole by lightning arrester, described lightning arrester lower end is fixed with electric discharge ring, described lightning arrester lower end is provided with the stud of fixing electric discharge ring, described electric discharge ring is provided with the screw coordinated with stud, described stud is also provided with the nut coordinated with stud, described electric discharge ring is between lightning arrester and nut; Lightning arrester is assembled to after on cross-arm, and between high-voltage conducting wires and lightning arrester, form a pure air series gap, air gap makes lightning arrester not bear system voltage and switching overvoltage at ordinary times, thus extends the useful life of lightning arrester; Under lightning overvoltage, lightning arrester can effective action, and limits the amplitude of lightning overvoltage, fast shut-off power frequency continued flow, thus lightning stroke flashover phenomenon does not occur protection circuit insulator.
Description
Technical field
The utility model relates to overhead transmission line straight line pole lightning protection device.
Background technology
In recent years, along with increasing of extreme climate, lightening activity is frequent, and the statistical magnitude of electric line generation lightning stroke trip, broken string and insulator arc-over accident is also continuous ascendant trend, the serious safe operation threatening electric power system.
In overhead transmission line, especially adopt the overhead transmission line of straight line pole, because its insulation level is lower, lightning protection level is weak, easily cause transmission line caused by lightning strike and lightning-caused breaking fault.
Lightning protection measures of the prior art has: overhead ground wire, negative angle protecting pin, zinc oxide arrester etc., but according to actual motion effect, the lightning protection effect of above-mentioned lightning protection measures is obviously not enough.
Summary of the invention
The overhead transmission line straight line pole lightning protection device that the utility model provides, is intended to overcome the lightning protection structure for overhead transmission line in prior art, lightning protection effect is poor, deficiency that use cost is high.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: overhead transmission line straight line pole lightning protection device, comprise lightning arrester, described lightning arrester upper end and support Bolted angle connection, so that lightning arrester is fixed on the cross-arm of straight line pole, described lightning arrester lower end is fixed with electric discharge ring, described lightning arrester lower end is provided with the stud of fixing electric discharge ring, described electric discharge ring is provided with the screw coordinated with stud, described stud is also provided with the nut coordinated with stud, described electric discharge ring is between lightning arrester and nut, the shape of cross section of described electric discharge ring is tool annular jaggy.After having assembled, between high-voltage conducting wires and lightning arrester, form a pure air series gap, air gap makes lightning arrester not bear system voltage and switching overvoltage at ordinary times, thus extends the useful life of lightning arrester; Under lightning overvoltage, lightning arrester can effective action, and limits the amplitude of lightning overvoltage, fast shut-off power frequency continued flow, thus lightning stroke flashover phenomenon does not occur protection circuit insulator; By supporting angle steel, lightning arrester being installed in parallel in insulator side, can ensureing that lightning current forms effective discharge channel by series gap.
As preferably, described screw is positioned at the middle part of electric discharge ring, described electric discharge ring is also provided with fixed head to improve the bonding strength between electric discharge ring and lightning arrester, described fixed head is welded on electric discharge ring, described fixed head is provided with and tool female fixing hole coaxial with screw, and described fixing hole and stud cooperatively interact.By arranging fixed head, substantially increasing the bonding strength of electric discharge ring and lightning arrester, extend the useful life of lightning arrester and improve lightning arrester security performance in use.
As preferably, described support angle steel is provided with zinc coat, and the cross section of described support angle steel is L shape, and described support angle steel is also provided with reinforcement to improve the intensity supporting angle steel, described reinforcement is integral type structure with supporting angle steel.The corrosion of support angle steel can be slowed down by arranging zinc coat, extending the useful life supporting angle steel; Improve by arranging reinforcement the intensity supporting angle steel, improve the security performance in lightning arrester use procedure.
As preferably, described lightning arrester upper end is provided with and the joint pin supporting Bolted angle connection, described joint pin is provided with external screw thread, described support angle steel is provided with and coordinates and the female tube connector of tool with joint pin, described joint pin is also provided with locking nut, and described locking nut is between lightning arrester and tube connector.By arranging tube connector, increasing joint pin and the length of thread engagement supported on angle steel, substantially increasing the bonding strength supported between angle steel and joint pin; In addition, by arranging locking nut, further increase lightning arrester and the switching performance supporting angle steel.
As preferably, be provided with gusset between described tube connector and support angle steel, described gusset is integral type structure with support angle steel, tube connector.By arranging gusset, improve tube connector and supporting the bonding strength of angle steel, so improve lightning arrester with the switching performance supporting angle steel, use safety.
As preferably, described support angle steel is connected by least two connecting bolts with cross-arm, and described cross-arm is provided with the draw-in groove of fixed support angle steel, and described support angle steel is connected to after in draw-in groove and is fixed by connecting bolt.By arranging draw-in groove, supporting angle steel and being connected to after in draw-in groove and being connected by connecting bolt again, support angle steel and cross-arm bonding strength high and easy to assembly.
The overhead transmission line straight line pole lightning protection device that the utility model provides, tool has the following advantages: lightning arrester upper end and support Bolted angle connection are to be fixed on the cross-arm of straight line pole by lightning arrester, described lightning arrester lower end is fixed with electric discharge ring, described lightning arrester lower end is provided with the stud of fixing electric discharge ring, described electric discharge ring is provided with the screw coordinated with stud, described stud is also provided with the nut coordinated with stud, described electric discharge ring is between lightning arrester and nut; Lightning arrester is assembled to after on cross-arm, and between high-voltage conducting wires and lightning arrester, form a pure air series gap, air gap makes lightning arrester not bear system voltage and switching overvoltage at ordinary times, thus extends the useful life of lightning arrester; Under lightning overvoltage, lightning arrester can effective action, and limits the amplitude of lightning overvoltage, fast shut-off power frequency continued flow, thus lightning stroke flashover phenomenon does not occur protection circuit insulator; By supporting angle steel, lightning arrester being installed in parallel in insulator side, can ensureing that lightning current forms effective discharge channel by series gap; In addition, electric discharge ring and lightning arrester are threaded connection, and electric discharge ring and the easy to assembly and syndeton of lightning arrester simply, reduce the use cost of lightning arrester.
Accompanying drawing explanation
Accompanying drawing 1 is the front view of the utility model overhead transmission line straight line pole lightning protection device,
Accompanying drawing 2 is A place enlarged drawings in accompanying drawing 1,
Accompanying drawing 3 is B-B place sectional drawings in accompanying drawing 1,
Accompanying drawing 4 is C-C place sectional drawings in accompanying drawing 1.
Embodiment
Below in conjunction with accompanying drawing, overhead transmission line straight line pole lightning protection device of the present utility model is described further.As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, overhead transmission line straight line pole lightning protection device, comprise lightning arrester 1, this lightning arrester 1 should meet: the regulation of DL/T815-2012 " transmission line of alternation current polymeric metal oxide surge arrester 1 " and GB11032-2000 " alternating current gapless metal oxide arrester 1 " two standards, zinc oxide arrester 1 of the prior art can be adopted, described lightning arrester 1 upper end is connected with support angle steel 2, so that lightning arrester 1 is fixed on the cross-arm 3 of straight line pole, described lightning arrester 1 lower end is fixed with electric discharge ring 4, described lightning arrester 1 lower end is provided with the stud 5 of fixing electric discharge ring 4, described electric discharge ring 4 is provided with the screw 6 coordinated with stud 5, described stud 5 is also provided with the nut 7 coordinated with stud 5, described electric discharge ring 4 is between lightning arrester 1 and nut 7, see Fig. 4, the shape of cross section of described electric discharge ring 4 is tool annular jaggy.
See Fig. 1, Fig. 2, described screw 6 is positioned at the middle part of electric discharge ring 4, described electric discharge ring 4 is also provided with fixed head 8 to improve the bonding strength between electric discharge ring 4 and lightning arrester 1, described fixed head 8 is welded on electric discharge ring 4, described fixed head 8 is provided with and tool female fixing hole 9 coaxial with screw 6, and described fixing hole 9 cooperatively interacts with stud 5.
See Fig. 1, described support angle steel 2 is provided with zinc coat, and the cross section of described support angle steel 2 is L shape, and described support angle steel 2 is also provided with reinforcement 10 to improve the intensity supporting angle steel 2, described reinforcement 10 is integral type structure with supporting angle steel 2.Certainly, the shape of cross section of described support angle steel 2 can also be the non-circular shape such as rectangle of rectangle, hollow, owing to supporting the flecition power of the power that angle steel 2 bears in the course of the work, therefore, the cross sectional form supporting angle steel 2 should be non-circular, to improve the bending strength supporting angle steel 2.
See Fig. 1, described lightning arrester 1 upper end is provided with and the joint pin 11 supporting angle steel 2 and be connected, described joint pin 11 is provided with external screw thread, described support angle steel 2 is provided with and coordinates and the female tube connector 12 of tool with joint pin 11, described joint pin 11 is also provided with locking nut 13, and described locking nut 13 is between lightning arrester 1 and tube connector 12.Described tube connector 12 can be arranged on by welding manner and support on angle steel 2, described tube connector 12 can be also integral type structure with support angle steel 2, be provided with gusset 14 between described tube connector 12 and support angle steel 2, described gusset 14 is integral type structure with support angle steel 2, tube connector 12.
See Fig. 1, Fig. 3, described support angle steel 2 is connected by least two connecting bolts 15 with cross-arm 3, and described cross-arm 3 is provided with the draw-in groove 16 of fixed support angle steel 2, and described support angle steel 2 is connected to after in draw-in groove 16 and is fixed by connecting bolt 15.
The operation principle of technique scheme is (overhead transmission line for 35kV): the thunder and lightning induction voltage amplitude of 35kV overhead distribution is high, discharge time is short, and the insulation level of 35kV distribution line straight line pole is low, lightning overvoltage can make insulator generation flashover, lightning stroke flashover passage is formed power frequency continued flow and causes transmission line caused by lightning strike and lightning-caused breaking fault; Electric discharge ring 4, lightning arrester 1 are fixed on after on cross-arm 3 by supporting angle steel 2, electric discharge ring 4 makes to form an atmospherical discharges gap of connecting between wire with lightning arrester 1; When electrical network normally runs, because electric discharge ring 4 makes to form a pure atmospherical discharges gap between wire and lightning arrester 1, isolation power-frequency voltage, lightning arrester 1 does not bear system voltage, and lightning arrester 1 is failure to actuate under switching overvoltage, extends the useful life of lightning arrester 1; Under the lightning overvoltage effect that direct lightning strike or induced lightening produce, air gap is breakdown, and lightning arrester 1 presents low resistive state, by supporting angle steel 2 and overhead line structures by lightning current ground connection; After thunderbolt, the resistance of lightning arrester 1 becomes large instantaneously, and the electric current passed through and power frequency continued flow are suppressed in lower numerical value, and the insulation of air gap recovers rapidly, and electric arc naturally extinguishes in very short time, and power frequency continued flow is interdicted completely.
These are only the preferred embodiment of the present invention, being intended to embody outstanding technique effect of the present invention and advantage, is not the restriction to technical scheme of the present invention.Those skilled in the art will appreciate that all amendments made based on the technology of the present invention content, change or substitute technology feature, all should be covered by the technology category of claims of the present invention opinion.
Claims (6)
1. overhead transmission line straight line pole lightning protection device, comprise lightning arrester (1), it is characterized in that: described lightning arrester (1) upper end is connected with support angle steel (2), so that lightning arrester (1) is fixed on the cross-arm (3) of straight line pole, described lightning arrester (1) lower end is fixed with electric discharge ring (4), described lightning arrester (1) lower end is provided with the stud (5) of fixing electric discharge ring (4), described electric discharge ring (4) is provided with the screw (6) coordinated with stud (5), described stud (5) is also provided with the nut (7) coordinated with stud (5), described electric discharge ring (4) is positioned between lightning arrester (1) and nut (7), the shape of cross section of described electric discharge ring (4) is tool annular jaggy.
2. overhead transmission line straight line pole lightning protection device according to claim 1, it is characterized in that: described screw (6) is positioned at the middle part of electric discharge ring (4), described electric discharge ring (4) is also provided with fixed head (8) to improve the bonding strength between electric discharge ring (4) and lightning arrester (1), described fixed head (8) is welded in electric discharge ring (4), described fixed head (8) is provided with and tool female fixing hole (9) coaxial with screw (6), and described fixing hole (9) and stud (5) cooperatively interact.
3. overhead transmission line straight line pole lightning protection device according to claim 1, it is characterized in that: described support angle steel (2) is provided with zinc coat, the cross section of described support angle steel (2) is L shape, described support angle steel (2) is also provided with reinforcement (10) to improve the intensity supporting angle steel (2), described reinforcement (10) is integral type structure with supporting angle steel (2).
4. overhead transmission line straight line pole lightning protection device according to claim 1, it is characterized in that: described lightning arrester (1) upper end is provided with and the joint pin (11) supporting angle steel (2) and be connected, described joint pin (11) is provided with external screw thread, described support angle steel (2) is provided with and coordinates and the female tube connector of tool (12) with joint pin (11), described joint pin (11) is also provided with locking nut (13), described locking nut (13) is positioned between lightning arrester (1) and tube connector (12).
5. overhead transmission line straight line pole lightning protection device according to claim 4, it is characterized in that: be provided with gusset (14) between described tube connector (12) and support angle steel (2), described gusset (14) is integral type structure with support angle steel (2), tube connector (12).
6. the overhead transmission line straight line pole lightning protection device according to claim 1 or 3 or 4 or 5, it is characterized in that: described support angle steel (2) is connected by least two connecting bolts (15) with cross-arm (3), described cross-arm (3) is provided with the draw-in groove (16) of fixed support angle steel (2), and described support angle steel (2) is connected to after in draw-in groove (16) and is fixed by connecting bolt (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292762.3U CN204558175U (en) | 2015-05-07 | 2015-05-07 | Overhead transmission line straight line pole lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292762.3U CN204558175U (en) | 2015-05-07 | 2015-05-07 | Overhead transmission line straight line pole lightning protection device |
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| Publication Number | Publication Date |
|---|---|
| CN204558175U true CN204558175U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520292762.3U Active CN204558175U (en) | 2015-05-07 | 2015-05-07 | Overhead transmission line straight line pole lightning protection device |
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| Country | Link |
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| CN (1) | CN204558175U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869802A (en) * | 2016-05-31 | 2016-08-17 | 上海电瓷厂有限公司 | Detachable rotary horizontal all-insulation arrester with disconnector |
-
2015
- 2015-05-07 CN CN201520292762.3U patent/CN204558175U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869802A (en) * | 2016-05-31 | 2016-08-17 | 上海电瓷厂有限公司 | Detachable rotary horizontal all-insulation arrester with disconnector |
| CN105869802B (en) * | 2016-05-31 | 2018-07-06 | 上海电瓷厂有限公司 | A kind of detachable rotary-type pressure-bearing type all insulation arrester of band disconnector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |