CN202076058U - Straight-line tower lightning protection device with 35-kilovolt circuit - Google Patents
Straight-line tower lightning protection device with 35-kilovolt circuit Download PDFInfo
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- CN202076058U CN202076058U CN2011201152643U CN201120115264U CN202076058U CN 202076058 U CN202076058 U CN 202076058U CN 2011201152643 U CN2011201152643 U CN 2011201152643U CN 201120115264 U CN201120115264 U CN 201120115264U CN 202076058 U CN202076058 U CN 202076058U
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- protection device
- fixing threaded
- arm
- zinc oxide
- arc electrode
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000011787 zinc oxide Substances 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 description 14
- 239000004020 conductor Substances 0.000 description 11
- 208000025274 Lightning injury Diseases 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
本实用新型涉及一种防雷保护设备；尤其是涉及一种35kV线路直线塔雷击防护装置。35kV线路直线塔雷击防护装置，其特征在于它包括引弧电极、氧化锌避雷器、引弧电极连接件、Z形连接件、支撑横担和固定夹件；引弧电极由引弧电极连接件与氧化锌避雷器的高压端螺杆固定连接；Z形连接件的一端与氧化锌避雷器的低压端螺杆固定连接，Z形连接件的另一端与支撑横担的一端固定连接；支撑横担的另一端至少由2个螺栓与固定夹件固定形成一个夹件。该装置能够有效防止雷击断线事故，降低线路的雷击跳闸率，提高供电的可靠性。
The utility model relates to a lightning protection device, in particular to a lightning strike protection device for a 35kV line straight tower. The 35kV line tower lightning strike protection device is characterized in that it includes an arc striking electrode, a zinc oxide arrester, an arc striking electrode connecting piece, a Z-shaped connecting piece, a supporting cross arm and a fixing clip; the arc striking electrode is composed of an arc striking electrode connecting piece and The high-voltage end screw of the zinc oxide arrester is fixedly connected; one end of the Z-shaped connector is fixedly connected with the low-voltage end screw of the zinc oxide arrester, and the other end of the Z-shaped connector is fixedly connected with one end of the supporting cross-arm; the other end of the supporting cross-arm is at least It is fixed by 2 bolts and the fixed clip to form a clip. The device can effectively prevent lightning strike disconnection accidents, reduce the lightning strike tripping rate of lines, and improve the reliability of power supply.
Description
Technical field
The utility model relates to a kind of lightning protection equipment; Especially relate to a kind of 35kV circuit tangent tower lightning Protection device, specifically, relate to the lightning arrester that a kind of 35kV overhead distribution prevents lightning-caused breaking.
Background technology
Along with the transformation and the global climate of circuit on power system insulating constantly worsens, make high-tension line that lightning stroke flashover take place easily, it is very outstanding that thunder and lightning strikes off the line problem, and then form power frequency arc and blow lead.
Along with the carrying out of the extensive upgrading urban and rural power grids of China's electric power system, the statistical magnitude of electric line generation lightning stroke trip, broken string and insulator arc-over accident also is continuous ascendant trend in recent years.The aerial condutor lightning strike accident takes place again and again both at home and abroad, and causes a lot of loss of life or personal injury and enormous economic loss.The safe operation of serious threat electric line of lightning stroke trip, broken string and insulator arc-over accident.
Overhead distribution adopts insulated conductor, has solved corridor and safety problem that plain conductor cann't be solved, compares with cable, reduced investment, builds soon, and advantage is fairly obvious.But the lightning-caused breaking problem is outstanding.More insulated conductor lightning-caused breaking accident has appearred in the whole nation, have in addition 10kV and 35kV plain conductor the lightning-caused breaking accident has also appearred.Interrelated data shows that insulated conductor is in operation, and its total failare number is 15.3% of a plain conductor fault sum, and number of faults descends greatly; Wherein the insulated conductor lightning strike accident accounts for 36.8% of total accident number, and the lightning-caused breaking rate is 96.8%.Therefore, along with the continuous increase of insulated circuit length, lightning-caused breaking and insulator arc-over accident have become the main root of serious threat distribution line safe operation.This shows that lightning-caused breaking is a major reason of insulated conductor interruption of service.
The lightning protection measures that adopts has the overhead ground wire of installation, puncture property arc-preventing metal utensil, lightning protection pillar insulator and zinc oxide arrester etc. at present, still according to the feedback of field practice, exists various problems, is difficult to form effective measures.
Insulation level ratio according to on-the-spot ruuning situation 35kV distribution line is easier to take place lightning stroke flashover, and then the formation power frequency arc blows lead.The 35kV plain conductor lightning-caused breaking accident or tripping rate with lightning strike occur easily than higher.The main cause that causes broken string is to build the arc power frequency continued flow on the lightning stroke flashover passage, and the temperature of arc root is very high, can at short notice lead be blown.
Summary of the invention
The purpose of this utility model just is to provide a kind of 35kV circuit tangent tower lightning Protection device, and this device can effectively prevent the lightning-caused breaking accident, reduces the tripping rate with lightning strike of circuit, improves the reliability of power supply.
For achieving the above object, technical solution adopted in the utility model is: 35kV circuit tangent tower lightning Protection device is characterized in that it comprises arc electrode, zinc oxide arrester, arc electrode connector, Z-shaped connector, supports cross-arm and fixed clip; Arc electrode is fixedlyed connected with the high-pressure side screw rod of zinc oxide arrester by the arc electrode connector; One end of Z-shaped connector is fixedlyed connected with the low-pressure end screw rod of zinc oxide arrester, and the other end of Z-shaped connector is fixedlyed connected with an end that supports cross-arm; The other end of support cross-arm is fixed by 2 bolts and fixed clip at least and is formed a folder.
Described arc electrode is a kind of "T"-shaped structure that is formed by fixedly connecting by the discharge electrode that is cambered surface of horizontal placement and the vertical cylinder of placing, and the centre of cylinder is provided with fixing threaded hole and nut bore from top to bottom.
Described arc electrode connector is an angle steel, and the middle position, two ends of arc electrode connector is respectively arranged with fixing threaded hole.
Described Z-shaped connector is Z-shaped structure, and an end of Z-shaped connector is provided with 2 fixing threaded holes, and the other end of Z-shaped connector is provided with 2 and supports screw.
One end of described support cross-arm is provided with 2 and supports screw; The other end that supports cross-arm is provided with 4 fixing threaded holes.
Described fixed clip is provided with 4 fixing threaded holes.
The utility model beneficial effect is:
1, adopts said structure, can effectively prevent the lightning-caused breaking accident, reduce the tripping rate with lightning strike of circuit, improve the reliability of power supply.
2, satisfy the zinc oxide arrester of GB regulation and the performance requirement of gold utensil, the discharge residual voltage is much smaller than the flashover voltage of insulator; The zinc oxide arrester overcoat is made by silastic elastomer, has good insulation performance performance and antifouling property.
3, design is succinct, and construction install convenience adopts pure air gap, and zinc oxide arrester does not bear system voltage and switching overvoltage, reduces maintenance cost, strengthens reliability and useful life.
4, owing to adopt nature body ground connection, must not increase extra earth resistance, easy for installation, simple, reliable.
5, have good operating characteristics, arc electrode can bear repeatedly the ablation of power frequency arc, dependable performance.
6, be applicable to the 35kV overhead distribution, prevent insulated conductor lightning-caused breaking accident.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the outline drawing of arc electrode.
Fig. 3 is the outline drawing of zinc oxide arrester.
Fig. 4 is the outline drawing of arc electrode connector.
Fig. 5 is the outline drawing of Z-shaped connector.
Fig. 6 is the outline drawing that supports cross-arm.
Fig. 7 is the outline drawing of fixed clip.
Among the figure: the 1-arc electrode; 1.1-discharge electrode (discharge face); 1.2-fixing threaded hole; 1.3-nut bore; 1.4-cylinder.
The 2-zinc oxide arrester; 2.1-high-pressure side screw rod; 2.2-standing screw; 2.3-clamp nut; 2.4-composite sheath; 2.5-zinc oxide valve plate; 2.6-composite sheath; 2.7-low-pressure end screw rod.
3-arc electrode connector; 3.1---fixing threaded hole; 3.2---fixing threaded hole.
4-Z shape connector; 4.1---fixing threaded hole; 4.2---fixing threaded hole; 4.3---support screw; 4.4---support screw.
5-supports cross-arm; 5.1---support screw; 5.2---support screw; 5.3---fixing threaded hole; 5.4---fixing threaded hole; 5.5---fixing threaded hole; 5.6---fixing threaded hole.
The 6-fixed clip; 6.1---fixing threaded hole; 6.2---fixing threaded hole; 6.3---fixing threaded hole; 6.4---fixing threaded hole.
Embodiment
Illustrate below in conjunction with the detailed example of drawings and Examples:
One, general structure
As shown in Figure 1,35kV circuit tangent tower lightning Protection device, it comprises arc electrode 1, zinc oxide arrester 2, arc electrode connector 3, Z-shaped connector 4, supports cross-arm 5 and fixed clip 6; Arc electrode 1 is fixedlyed connected (fixedly connected by the standing screw on the high-pressure side screw rod 2.1 2.2 by arc electrode connector 3 with the high-pressure side screw rod 2.1 of zinc oxide arrester 2, between power transmission line and zinc oxide arrester 2, form a 80mm discharging gap, the lightning stroke flashover passage is provided); One end of Z-shaped connector 4 is fixedlyed connected (fixedly connected by the standing screw on the low-pressure end screw rod 2.2) with the low-pressure end screw rod 2.7 of zinc oxide arrester 2, the other end of Z-shaped connector 4 and an end fixedly connected (as being connected by bolt) that supports cross-arm 5; The other end that supports cross-arm 5 forms a folder [folder is fixed on 35kV circuit tangent tower (or title 35KV high voltage iron tower with this device by 2 bolts and fixed clip 6 are fixing at least, on the cross-arm of suspension insulator overhead line structures) (insulator support cross-arm), transmission pressure places on insulator one termination].
Two, each component structural
1, arc electrode 1,
As shown in Figure 2, arc electrode 1 is to fixedly connected a kind of "T"-shaped structure that (as welding) form with the vertical cylinder of placing 1.4 by the discharge electrode that is cambered surface (discharge face) 1.1 of horizontal placement, is provided with fixing threaded hole 1.2 and nut bore 1.3 from top to bottom in the centre of cylinder 1.4.
Fixing threaded hole 1.2 usefulness screw rods can make arc electrode 1 be fixed on the fixing threaded hole 3.1 of arc electrode connector, simultaneously arc electrode 1 are installed firmly; When installing on the line, power transmission line is placed on the discharge electrode (discharge face) 1.1 of arc electrode 1, form the discharging gap between power transmission line and the zinc oxide arrester 2.
2, zinc oxide arrester 2,
As shown in Figure 3, zinc oxide arrester 2 comprises high-pressure side screw rod 2.1, standing screw 2.2, clamp nut 2.3, composite sheath 2.4, zinc oxide valve plate 2.5, composite sheath 2.6 and low-pressure end screw rod 2.7.
Composite sheath 2.4, composite sheath 2.6 provide the external insulation of zinc oxide arrester 2, guarantee enough dielectric strengths;
Zinc oxide valve plate 2.5 places the center of zinc oxide arrester 2, can limit lightning overvoltage and block power frequency continued flow.
3, the arc electrode connector 3,
As shown in Figure 4, arc electrode connector 3 is that the finished product angle steel of a kind of 50*50 of employing is made, and cut growth 50mm, the surface adopts hot galvanizing to handle, the middle position, two ends of angle steel is respectively arranged with fixing threaded hole (circular hole) 3.1, the fixing threaded hole (circular hole) 3.2 of Φ 13.5, and wherein fixing threaded hole 3.1 usefulness screw rods are fixed its top with arc electrode 1; The standing screw 2.2 of fixing threaded hole 3.2 usefulness zinc oxide arresters 2 high-pressure sides connects arc electrode 1, tightens clamp nut 2.3.
This structure makes arc electrode 1 firmly be connected with the high-pressure side of zinc oxide arrester 2.
4, Z-shaped connector 4
As shown in Figure 5, Z-shaped connector 4 is that a kind of two ends is respectively arranged with circular fixing threaded hole 4.1, fixing threaded hole 4.2 and supports screw 4.3, supports the Z-shaped structure of screw 4.4, is that the cast iron steel of 6mm are made by thickness, and steel surface adopts hot galvanizing to handle.
The fixing threaded hole 4.1 of one end of Z-shaped connector 4 and fixing threaded hole 4.2 are fixed to screw rod on the standing screw 2.2 of low-pressure end of zinc oxide arrester 2; Other end support screw 4.3 and support screw 4.4 usefulness screw rods are fixed on the support screw 5.1 and support screw 5.2 that supports cross-arm 5.
This structure is the effect that is used to support this device.
5, support cross-arm 5,
As Fig. 6, to support finished product angle steel cutting that cross-arm adopts 40*40, be welded into Fig. 6 shape, the surface adopts hot galvanizing to handle.
The support screw 5.1 that supports an end of cross-arm is fixedlyed connected with support screw 4.4 usefulness screw rods with the support screw 4.3 of Z-shaped connector with support screw 5.2; The fixing threaded hole 5.3 of the other end, fixing threaded hole 5.4, fixing threaded hole 5.5 and fixing threaded hole 5.6 usefulness screw rods support the insulator that this device is fixed on the 35KV high voltage iron tower on the cross-arm with fixing threaded hole 6.1, fixing threaded hole 6.2, fixing threaded hole 6.3 and the fixing threaded hole 6.4 of fixed clip 6 respectively.
This structure one is to fix this device, provides a passage of releasing to lightning wave besides, and plays the effect that prevents lightning-caused breaking.
6, fixed clip 6,
As shown in Figure 7, fixed clip adopts the finished product angle steel of 40*40 to be cut into Fig. 7 shape, and the surface adopts hot galvanizing to handle.
The fixing threaded hole 6.1 of fixed clip 6, fixing threaded hole 6.2, fixing threaded hole 6.3 and fixing threaded hole 6.4 support the insulator that this device is fixed on the 35KV high voltage iron tower on the cross-arm with the fixing threaded hole 5.3, fixing threaded hole 5.4, fixing threaded hole 5.5 and the fixing threaded hole 5.6 usefulness screw rods that support cross-arm 5 respectively.
This structure has been a fixation.
Operation principle of the present utility model is:
Because the lightning overvoltage amplitude height of 35kV overhead distribution, discharge time is short, and lightning overvoltage can make insulator generation flashover, forms power frequency continued flow and blow transmission pressure on the lightning stroke flashover passage.
When electrical network normally moves, because arc electrode forms a discharging gap (80mm) between transmission pressure and zinc oxide arrester, just isolated power-frequency voltage this moment, and the zinc oxide arrester body can not be subjected to the influence of power-frequency voltage, switching overvoltage etc., increases the useful life of lightning arrester; Lightning arrester low-pressure end natural grounding does not need to increase extra earth resistance, reduces construction intensity.
Arc electrode is designed to circular-arc, even also can make the gap between lead and the arc electrode too big variation can not take place under the situation of lead swing, guarantees the stability of discharge.
Under the lightning overvoltage effect, lightning arrester can effective action, and the amplitude of restriction lightning overvoltage is also blocked power frequency continued flow, prevents the insulator arc-over accident; By supporting cross-arm lightning arrester is installed in parallel in the insulator side, appropriate design supports cross-arm makes lightning arrester and power transmission line form suitable series gap, can form effective discharge channel by series gap, the assurance zinc oxide arrester can escape switching overvoltage again can be at effective action under the lightning overvoltage.
As shown from the above technical solution, when the 35kV overhead distribution is subjected to being struck by lightning, can puncture the discharging gap that arc electrode provides, make the zinc oxide arrester action, lightning overvoltage is limited under the flashover voltage of insulator, by zinc oxide arrester power frequency continued flow is blocked then, can prevent the conductor cord disconnection accident that causes by lightning stroke flashover.
Claims (6)
1.35kV circuit tangent tower lightning Protection device is characterized in that it comprises arc electrode (1), zinc oxide arrester (2), arc electrode connector (3), Z-shaped connector (4), supports cross-arm (5) and fixed clip (6); Arc electrode (1) is fixedlyed connected with the high-pressure side screw rod of zinc oxide arrester (2) by arc electrode connector (3); One end of Z-shaped connector (4) is fixedlyed connected with the low-pressure end screw rod of zinc oxide arrester (2), and the other end of Z-shaped connector (4) is fixedlyed connected with an end that supports cross-arm (5); The other end of support cross-arm (5) is fixed by 2 bolts and fixed clip (6) at least and is formed a folder.
2. 35kV circuit tangent tower lightning Protection device according to claim 1, it is characterized in that: described arc electrode (1) is a kind of "T"-shaped structure that is formed by fixedly connecting by the discharge electrode that is cambered surface (1.1) of horizontal placement and the vertical cylinder of placing (1.4), and the centre of cylinder (1.4) is provided with fixing threaded hole (1.2) and nut bore (1.3) from top to bottom.
3. 35kV circuit tangent tower lightning Protection device according to claim 1, it is characterized in that: described arc electrode connector (3) is an angle steel, and the middle position, two ends of arc electrode connector (3) is respectively arranged with fixing threaded hole.
4. 35kV circuit tangent tower lightning Protection device according to claim 1, it is characterized in that: described Z-shaped connector (4) is Z-shaped structure, one end of Z-shaped connector (4) is provided with 2 fixing threaded holes, and the other end of Z-shaped connector (4) is provided with 2 and supports screw.
5. 35kV circuit tangent tower lightning Protection device according to claim 1 is characterized in that: an end of described support cross-arm (5) is provided with 2 and supports screw; The other end that supports cross-arm (5) is provided with 4 fixing threaded holes.
6. 35kV circuit tangent tower lightning Protection device according to claim 1, it is characterized in that: described fixed clip (6) is provided with 4 fixing threaded holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201152643U CN202076058U (en) | 2011-04-19 | 2011-04-19 | Straight-line tower lightning protection device with 35-kilovolt circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201152643U CN202076058U (en) | 2011-04-19 | 2011-04-19 | Straight-line tower lightning protection device with 35-kilovolt circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076058U true CN202076058U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201152643U Expired - Fee Related CN202076058U (en) | 2011-04-19 | 2011-04-19 | Straight-line tower lightning protection device with 35-kilovolt circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202076058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751055A (en) * | 2012-07-10 | 2012-10-24 | 辽宁省电力有限公司丹东供电公司 | Discharge gap fitting of 66KV line insulator |
| CN107170541A (en) * | 2017-06-09 | 2017-09-15 | 国网湖北省电力公司电力科学研究院 | A kind of Folding wave formula resistor |
-
2011
- 2011-04-19 CN CN2011201152643U patent/CN202076058U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751055A (en) * | 2012-07-10 | 2012-10-24 | 辽宁省电力有限公司丹东供电公司 | Discharge gap fitting of 66KV line insulator |
| CN107170541A (en) * | 2017-06-09 | 2017-09-15 | 国网湖北省电力公司电力科学研究院 | A kind of Folding wave formula resistor |
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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: YICHANG POWER SUPPLY COMPANY OF HUBEI ELECTRIC POW Free format text: FORMER OWNER: YICHANG POWER SUPPLY COMPANY, TRANSMISSION CENTER Effective date: 20121231 Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121231 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121231 Address after: 443003 Yichang Yanjiang Road, Hubei, No. 117 Patentee after: Yichang Power Supply Company of Hubei Electric Power Company Patentee after: State Grid Corporation of China Address before: 443003 transmission center of Yichang power supply company, No. 320, Yiling Road, Yichang, Hubei Patentee before: Yichang Power Supply Co.,Ltd. Power Transmission Central |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20160419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |