CN201466469U - Current-limiting lightning rod with wide protective range - Google Patents
Current-limiting lightning rod with wide protective range Download PDFInfo
- Publication number
- CN201466469U CN201466469U CN2009200862402U CN200920086240U CN201466469U CN 201466469 U CN201466469 U CN 201466469U CN 2009200862402 U CN2009200862402 U CN 2009200862402U CN 200920086240 U CN200920086240 U CN 200920086240U CN 201466469 U CN201466469 U CN 201466469U
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- Prior art keywords
- current
- lightning rod
- lightning
- current limliting
- rod
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to a current-limiting lightning rod with wide protective range, consisting of a lightning rod main body and a base (3), wherein the base consists of a hemispheroid and a base plate connected with the hemispheroid into a whole; the hemispheroid is evenly provided with mounting holes; the base plate is a flat plate with a mounting screw hole; the lightning rod main body is provided with a plurality of current-limiting lightning rod bodies (2); the bottom ends of the current-limiting lightning rod bodies (2) are inserted into the mounting holes and fixed with nuts; 1-4 metal needles (1) which are in threaded connection with the current-limiting lightning rod bodies (2) are arranged at the top of the current-limiting lightning rod bodies (2); and one of the current-limiting lightning rod bodies (2) in the middle is vertically arranged as a main current-limiting lightning rod body, the rest are distributed on 2-6 sectors and the sections are evenly distributed along the circumferential direction. The utility model can attract vertical and horizontal downlink guide, has wide protective range, can limit the current amplitude and the raising gradient of thunder current so as to greatly reduce the destructiveness of thunder current, and has self-recovering function after the thunder current passes through as well as favorable climate resistance, excellent environment adaptive resistance and long service life.
Description
Technical field
The utility model relates to lightning rod, particularly relates to the big current limliting lightning rod of a kind of protection range, and this lightning rod can be widely used in the direct lightning strike protection of every profession and trade.
Background technology
At present, the direct lightning strike means of defence mainly is that the Franklin lightning rod is installed on protected object, is characterized in utilizing the height of self that the thundercloud electric field is distorted, and thunder and lightning is attracted in self, replaces protected object to be struck by lightning.Lightning rod has following defective when attracting thunder and lightning: the protection range of lightning rod is little; Very big when the rising steepness, amplitude is tens lightning currents to the hundreds of kilo-ampere when flowing through lightning rod, can cause the hurried rising of current potential of needle body, downlead and earth electrode, causes the counterattack to the protection thing; During thunderbolt people and animal nearby ground or the contact downlead, can be subjected to very high step voltage or touch voltage effect and threat to life; The powerful lightning current induction field that the space forms around it that flows through lightning rod can cause the malfunction and the damage of equipment, particularly to weak current equipment, explosives, inflammable items, when adopting conventional lightning conductor to protect, very easily causes massive losses; Conventional lightning conductor and other lightning rod are when bearing lightning current, and meetings such as tens mechanical effects that produce to the lightning current of hundreds of kilo-ampere, galvanomagnetic effect, thermal effect produce expendable destruction to lightning rod; Lightning rod is exposed in the air, and especially progressively corrosion of meeting under the salt fog effect of coastal area causes its direct striking thunder prevention performance progressively to weaken in acid rain, ultraviolet ray, ozone environment.
Summary of the invention
Technical problem to be solved in the utility model is: at the defective of conventional lightning conductor and other lightning rod; provide a kind of protection range big, have self-recovering function and can limit the current limliting lightning rod of lightning current, to adapt to the direct lightning strike protection of industry such as broadcasting and TV, communication, petroleum and petrochemical industry, electric power and important building.
The technical scheme that its technical problem that solves the utility model adopts is: be made up of lightning rod main body and pedestal.Wherein: pedestal is made up of hemisphere and the base plate that is connected as a single entity with it, is evenly distributed with installing hole on the hemisphere, and base plate is installed the flat board of screw for band; The lightning rod main body is provided with the lightning-arrest needle body of many current limlitings, and their bottom is inserted in the described installing hole and by nut and fixed, and 1～4 metal needle that is threaded is with it all arranged at their top; The described current limliting needle body of taking shelter from the thunder, wherein in the middle of one vertically be installed as the lightning-arrest needle body of main current limliting, all the other are distributed in 2～6 covering of the fans, each covering of the fan evenly distributes along hemispheroidal circumferencial direction.
The utility model is compared with existing lightning rod, and its advantage mainly is: this current limliting lightning rod needle body layout spherical in shape, can attract vertically and the descending guide of level, and its protection range is big; Can limit the current amplitude and the rising steepness of lightning current, the destructiveness of thunder and lightning is greatly reduced; The lightning current through-current capability of the silastic material of current limliting lightning rod is better than other nonmetallic materials; After lightning current passes through, has self-recovering function; Silastic material and protective finish thereof have the anti-environmental suitability of good weatherability thereby its life-span long.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be among Fig. 1 A to the enlarged diagram of section.
Fig. 3 is a scheme of installation of the present utility model.
Parts among the figure: 1. metal needle; 2. the lightning-arrest needle body of current limliting; 3. pedestal; 4. iron tower; 5. the body of rod; 6. semiconductor silicon rubber layer; 7. organosilicon protective finish.
Embodiment
The current limliting lightning rod that the protection range that the utility model provides is big (be called for short current limliting lightning rod), its structure be as shown in Figure 1: be made up of lightning rod main body and pedestal 3.
Described pedestal 3 is made up of hemisphere and the base plate that is connected as a single entity with it.Be distributed with 5～25 installing holes on the hemisphere, be used to install the lightning-arrest needle body 2 of current limliting.Base plate is the flat board of band installation screw, and this flat board passes the installation screw by bolt and is contained on the top of iron tower, and pedestal 3 is fixed on the iron tower.Pedestal 3 is made by stainless steel or through the steel of antirust processing.
Described lightning rod main body is made up of metal needle 1 and 5～25 lightning-arrest needle bodies 2 of current limliting.The lightning-arrest needle body of these current limlitings is formed long 2～6 meters by 1～3 joint; Their distributions spherical in shape, their bottom are inserted one by one in the hemispheroidal installing hole of pedestal 3 and by nut and are fixed, and 1～4 metal needle 1 that is threaded is with it all arranged at their top.These current limlitings needle body of taking shelter from the thunder, one vertically is installed as the lightning-arrest needle body of main current limliting wherein, all the other are distributed in 2～6 covering of the fans, and the angle α of the lightning-arrest needle body of adjacent two current limlitings is 12～25 ° in the same covering of the fan, and each covering of the fan evenly distributes along the hemispheroidal circumferencial direction of pedestal 3.Every metal needle 1 can be made with stainless steel or other corrosion resistant metal.
The described current limliting needle body 2 of taking shelter from the thunder, its structure be as shown in Figure 2: be the body of rod 5, semiconductor silicon rubber layer 6 and transparent organosilicon protective finish 7 from inside to outside successively.The body of rod 5 is expoxy glass rod iron or expoxy glass steel pipe, and its external diameter is 18～50mm, and thickness is 5～15mm; Its intensity guarantees that the current limliting lightning rod moves in 45～60m/s wind midium or long term to the high-altitude of hundreds of rice reliably tens.Semiconductor silicon rubber layer 6 is coated on the outer surface of the body of rod 5, and its thickness is 1～5mm, and resistance is 1～50k Ω; Semiconductor silicon rubber has performances such as better elastic and fabulous resistant of high or low temperature, uvioresistant, anti-ozone, guarantees that current limliting lightning rod lightning current through-current capability is strong, has automatic recovery ability and the good anti-environmental suitability of weatherability.Organosilicon protective finish 7, it is coated on the outer surface of semiconductor silicon rubber layer 6, plays the effect of protection semiconductor silicon rubber layer; It and semiconductor silicon rubber layer have splendid weatherability, the long stable effect of common guarantee current limliting lightning rod equally.
The utility model on iron tower or building, (generally on building, build a little iron tower) installing, iron tower or building by being connected with the utility model reliable electric as downlead and earthing device.
The course of work of the present utility model is: overhead near this current limliting lightning rod, when guide's discharge generation also develops downwards under the thundercloud effect of electric field, the current limliting lightning rod utilizes the height of self that the thundercloud electric field is distorted, and thunder and lightning is attracted in self, avoids protected object to be struck by lightning; Because the distribution spherical in shape of this current limliting lightning rod can attract guide's discharge of vertical and level development, has increased the protection range of current limliting lightning rod; Current limliting lightning rod semiconductor silicon rubber layer resistance is 1～50k Ω, can limit the current amplitude and the rising steepness of lightning current, and the destructiveness of thunder and lightning is greatly reduced.After the thunder and lightning, the semiconductor silicon rubber layer utilizes its performance of elastic return of himself.
Claims (6)
1. the current limliting lightning rod that protection range is big is characterized in that being made up of lightning rod main body and pedestal (3), and wherein: pedestal is made up of hemisphere and the base plate that is connected as a single entity with it, is evenly distributed with installing hole on the hemisphere, and base plate is installed the flat board of screw for band; The lightning rod main body is provided with the lightning-arrest needle body (2) of many current limlitings, and their bottom is inserted in the described installing hole and by nut and fixed, and 1～4 metal needle (1) that is threaded is with it all arranged at their top; The described current limliting needle body of taking shelter from the thunder, wherein in the middle of one vertically be installed as the lightning-arrest needle body of main current limliting, all the other are distributed in 2～6 covering of the fans, each covering of the fan evenly distributes along hemispheroidal circumferencial direction.
2. current limliting lightning rod according to claim 1 is characterized in that: the angle α of the lightning-arrest needle body (2) of adjacent two current limlitings is 12～25 ° in the same covering of the fan.
3. current limliting lightning rod according to claim 1 and 2 is characterized in that: the every lightning-arrest needle body (2) of current limliting, it is made up of 1～3 joint, long 2～6 meters.
4. current limliting lightning rod according to claim 3; it is characterized in that: the current limliting needle body (2) of taking shelter from the thunder is made up of the body of rod (5), semiconductor silicon rubber layer (6) and organosilicon protective finish (7); semiconductor silicon rubber layer (6) is coated on the outer surface of the body of rod (5), and organosilicon protective finish (7) is coated on the outer surface of semiconductor silicon rubber layer (6).
5. current limliting lightning rod according to claim 4 is characterized in that: the described body of rod (5), and it is expoxy glass rod iron or expoxy glass steel pipe, and its external diameter is 18～50mm, and thickness is 5～15mm.
6. current limliting lightning rod according to claim 4 is characterized in that: described semiconductor silicon rubber layer (6), its thickness are 1～5mm, and resistance is 1～50k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200862402U CN201466469U (en) | 2009-06-05 | 2009-06-05 | Current-limiting lightning rod with wide protective range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200862402U CN201466469U (en) | 2009-06-05 | 2009-06-05 | Current-limiting lightning rod with wide protective range |
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| Publication Number | Publication Date |
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| CN201466469U true CN201466469U (en) | 2010-05-12 |
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| CN2009200862402U Expired - Lifetime CN201466469U (en) | 2009-06-05 | 2009-06-05 | Current-limiting lightning rod with wide protective range |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470816A (en) * | 2015-12-25 | 2016-04-06 | 王鹏 | Lightning protection apparatus used for overhead line |
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2009
- 2009-06-05 CN CN2009200862402U patent/CN201466469U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470816A (en) * | 2015-12-25 | 2016-04-06 | 王鹏 | Lightning protection apparatus used for overhead line |
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