CN2692887Y - Non-electromagnetic radiation arrester - Google Patents
Non-electromagnetic radiation arrester Download PDFInfo
- Publication number
- CN2692887Y CN2692887Y CN 200420032757 CN200420032757U CN2692887Y CN 2692887 Y CN2692887 Y CN 2692887Y CN 200420032757 CN200420032757 CN 200420032757 CN 200420032757 U CN200420032757 U CN 200420032757U CN 2692887 Y CN2692887 Y CN 2692887Y
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- lightning
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Abstract
The utility model relates to a non-electromagnetic radiation arrester, compising an ordinary lightning rod and down leads. The non-electromagnetic radiation arrester is characterized in that the external surface of the ordinary lightning rod and the down leads is sheathed with one layer or two layers of shielding iron pipe. The non-electromagnetic radiation arrester has the same functions of lightning receiving, lightning current guiding, protecting range, etc. With the ordinary lightning rod and the down lead, but the non-electromagnetic radiation arrester is different from the ordinary lightning rod and the down lead; the shielding pipe prevents the electromagnetic ray generated when the lightning rod and the down lead guide lightning current from transmitting to the peripheral space, and thereby the electromagnetic interference and damages of the peripheral microelectronic devices are not caused. Thus the inherent and serious defects of the ordinary lightning rod and the down lead are eliminated. The shielding pipe also has the function of enlarging the inductance of the lightning rod and the down lead, thereby the wave impedances of the lightning rod and the down lead are enlarged, and therefore the non-electromagnetic radiation arrester has the restrictive action to the amplitude value and the steepness of the lightning current.
Description
Technical field
The utility model relates to a kind of novel direct striking thunder prevention device-electromagnetic-radiation-free lightning arrester.
Background technology
In lightning protection and lightning-protecting engineering, existing lightning rod (hereinafter referred to as common lightning rod and downlead) can be protected building and the unlikely harm that suffers direct stroke of people in its protection range effectively.It has intrinsic and a serious defective, Here it is it when releasing lightning current, lightning current can produce powerful electromagnetic interference around it.These electromagnetic interference rays are the surrounding space radiation propagation of starting point to it with the lightning rod, when it runs into metallic object or plain conductor, will induce voltage therein and generate electric current.Electronic equipment with large scale integrated chip often damages because of this lightning induced voltage (being commonly called as surge voltage).If the two ends of these plain conductors are not closed, and when on the metallic object breach being arranged, the voltage that the electromagnetic interference ray is responded to will produce sparkover at the opening part of lead or the breach place of metallic object, and accidents caused.Have inflammable and place explosion hazard gases, as oil depot, explosives magazine etc., the sparkover of making because of induction overvoltage often causes serious accident.For example:
Nanjing Refinery thunderbolt lightning rod caused that reinforced concrete oil tank was on fire from explosion in 1979;
On July 23rd, 1988, the Hebei microwave station was because of the high 70 meters lightning rod that is struck by lightning, cause a microwave station, transformer station and join 35kV, 110kV circuit and multiple communication and the badly damaged accident of electric equipment from the many places such as county power office control room of 100 meters distant places of antenna iron tower;
Huang Island oil depot in 1989 causes the district's big fire of whole oil depot, dead 19 people, nearly hundred million yuan of direct economic losses because of the thunderbolt lightning rod causes the oil storage tank blast;
One piece of god of unusual strength's rocket of the U.S. in 1987 is struck by lightning, cause with a toll of 1.7 hundred million dollars.Or the like.
It is too numerous to mention to draw the accident that the electromagnetic interference behind the thunder causes by lightning rod.In modern society, we in addition we can say that lightning rod is to cause microelectronic device and misfortune star and arch-criminal with inflammable and explosive object warehouse damage accident on the contrary.Therefore improve common lightning rod, the defective that overcomes its electromagnetic interference is that go all out on the science and technology of lightning protection for many years circle, for it Fen Dou key subjects.
Summary of the invention
The purpose of this utility model is that this intrinsic major defect of existing lightning rod is reformed and improved, and provides a kind of and can eliminate the shortcoming of common lightning rod and the electromagnetic-radiation-free lightning arrester of harm fully.
This new direct striking thunder prevention device that the utility model creates, the method that is adopted is exactly along the outside suit one deck of whole length of lightning rod diversion rod and downlead or the irony shielded-plate tube of two-layer graded insulation, disturb ray with the intense electromagnetic that shielding lightning rod and downlead produce when guiding lightning current, make it not propagate into its surrounding space, threaten and endanger to various weak current equipments or to the place that inflammable and explosive object is arranged.
In addition, overcome following defective: connect the thunder and lightning of releasing along lightning rod and downlead after dodging when lightning rod
Fail to be convened for lack of a quorum and on lightning rod and downlead, cause voltage drop, this voltage drop meeting punctures the insulation between lightning rod and the irony shielded-plate tube, cause the irony shielded-plate tube also will pass through lightning current, and because of the effect of kelvin effect, in fact the high frequency lightning current will mainly flow through from the exterior shield pipe, and does not have the effect of the electromagnetic shielding that needs.Concrete measure is: the irony shielded-plate tube is divided into is about 10～20cm or shorter segment, handle every section equipotential that all links to each other with diversion rod with the equipotential nail, between diversion rod and shielded-plate tube, and between every adjacent two sections shielded-plate tubes, keep 2～4 mm clearance and fill the insulating material of proper strength, can guarantee when the conducting lightning current unlikely puncture the between every segment shielded-plate tube.Just do not have lightning current like this on shielded-plate tube and flow through, lightning current still can only flow through in the diversion rod of centre, and outside shielded-plate tube just can play shielding action.
Electromagnetic-radiation-free lightning arrester of the present utility model is particularly useful for the place of installing independent lightning rods such as all kinds of microwave stations, communication base station, warehouse and intelligent building, because it has solved the problem of thunder and lightning electromagnetic interference, its relatively more conventional lightning rod has unrivaled superiority.
Description of drawings
Fig. 1 is single shielding electromagnetic-radiation-free lightning arrester structural representation of the present utility model;
Fig. 2 is double shield electromagnetic-radiation-free lightning rod of the present utility model and downlead structural representation;
Fig. 3 is many electromagnetic-radiation-free lightning rods of the present utility model and downlead lightning arrester structural representation;
Among the figure, 1-diversion rod, 2-insulating material, 3-shielded-plate tube, 4-equipotential nail, 5-insulating material, 6-equipotential nail, 7-electromagnetic-radiation-free lightning rod, 8-hemisphere pedestal, 9, the 12-insulator, 10-electromagnetic-radiation-free downlead, 11-lightning protection iron tower.
Embodiment
The structure of electromagnetic-radiation-free lightning rod of the present utility model and downlead and mounting means have following several, but are not limited to following several.
Embodiment 1: single shielding electromagnetic-radiation-free lightning rod and downlead, as shown in Figure 1.The round steel 1 at center is the lightning current diversion rod, and it comprises the arrester of head and the connection screw of bottom.In the outside of diversion rod 1 is the ferrous material shielded-plate tube 3 of insulating material 2 and segmentation, and every section shielded-plate tube is connected to diversion rod 1 by equipotential nail 4, is filled with insulating material 5 in the gap between the grading shield pipe.
The grading shield pipe should be selected soft magnetic material for use, and thickness is 1～5mm.
The shield effectiveness of single shielding electromagnetic-radiation-free lightning rod and downlead is about 90%, because also will leak the fraction electromagnetic radiation by the gap between every segment shielded-plate tube.In general, can mask the electromagnetic radiation of the overwhelming majority, can satisfy the requirement of most of occasions.
Embodiment 2: double shield electromagnetic-radiation-free lightning rod and downlead, as shown in Figure 2.The round steel 1 at center is the lightning current diversion rod, and it comprises the arrester of head and the connection screw of bottom.In the outside of diversion rod 1 is ground floor insulating material 2, is the ferrous material shielded-plate tube 3 of ground floor segmentation in its outside, and every section shielded-plate tube is connected to diversion rod 1 by equipotential nail 4, is filled with insulating material 5 in the gap of grading shield pipe 3.In the outside of grading shield pipe 3 are second layer insulating material, are the ferrous material shielded-plate tube of second layer segmentation in its outside, and every section shielded-plate tube is connected to diversion rod 1 by equipotential nail 6, is filled with insulating material in the gap of grading shield pipe.
Two-layer shielded-plate tube all should be selected soft magnetic material for use, and thickness is 1～1.5mm.
The outer shielded-plate tube of double shield lightning rod and downlead has shielded the gap of internal layer shielded-plate tube, therefore can reach desirable complete shield effectiveness.
In some cases, for ease of laying of downlead, require the electromagnetic-radiation-free downlead to have certain flexibility and flexible performance.The baffle at the downlead of electromagnetic-radiation-free shielding at this moment center can adopt flexible cable core, and the shielded-plate tube in its outside can adopt shorter ferrous material short tube or pipe ring.Its structure is similar with downlead to the single-layer shield electromagnetic-radiation-free lightning rod of Fig. 1.
Embodiment 3: electromagnetic-radiation-free spininess lightning protection device adopts many electromagnetic-radiation-free lightning rods and downlead to form, usually pin is several 13～35, but be not limited to this number, long 1～the 5m of pin, also be not limited to this length range, on the hemisphere metal base, make the radiant type of falling the umbrella shape and install, as shown in Figure 3.Many electromagnetic-radiation-free lightning rods 7 are installed on the hemisphere pedestal 8, and pedestal is installed on the top of lightning protection iron tower 11 by insulator 9.Take over control thunder pedestal 8 on the electromagnetic-radiation-free downlead 10, connect ground network down, be fixedly mounted on the body of the tower of iron tower 11 by several insulators 12 at the middle part.
Electromagnetic-radiation-free spininess lightning-protection system also can be installed on the building roof, and at this moment because building has many down conductors, let out lightning current down and obtain shunting, and the unnecessary electromagnetic-radiation-free downlead of adorning in addition.
This electromagnetic-radiation-free spininess lightning-protection system not only has than single the protection range that lightning rod is bigger; and under the thundercloud electric field action, has a bigger corona current; the space charge that this corona current forms has formed a space charge screen above lightning-protection system; the distribution of electric field around it has changed; improved thunderbolt voltage; and do not subject to be struck by lightning; therefore have than the better performance of being struck by lightning avoided of lightning rod; that is to say that this lightning-protection system has than single the lightning strike probability that lightning rod is much smaller.Can not cause electromagnetic interference and harm even be subjected to being struck by lightning because of its electromagnetic-radiation-free performance to surrounding environment yet.Therefore this electromagnetic-radiation-free spininess lightning-protection system will become best, the optimal lightning protection device of lightning protection properties.
Claims (4)
1, a kind of electromagnetic-radiation-free lightning arrester comprises lightning rod and downlead, it is characterized in that at the outside of lightning rod diversion rod and downlead suit one deck or two-layer shielding iron pipe.
2, electromagnetic-radiation-free lightning arrester according to claim 1, it is characterized in that shielding iron pipe and adopt soft iron material, contiguous segmentation is provided with, every segment length is 10～20cm, all link to each other with diversion rod at every section with the equipotential nail, between diversion rod and shielded-plate tube, and between every adjacent two sections shielded-plate tubes, keep 2～4 mm clearance and fill the insulating material of proper strength.
3, electromagnetic-radiation-free lightning arrester according to claim 1, the diversion rod that it is characterized in that the electromagnetic-radiation-free downlead adopts the round steel or the flexible Stranded cable of suitable diameter.
4, electromagnetic-radiation-free lightning arrester according to claim 1, it is characterized in that electromagnetic-radiation-free lightning protection pin is a spininess, adopt 13～35, long 1～the 5m of pin, making the radiant type of falling the umbrella shape on the hemisphere metal base installs, pedestal over the ground or to iron tower top insulating mounting, downlead also adopts the electromagnetic-radiation-free downlead, is installed on the body of the tower by insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032757 CN2692887Y (en) | 2004-02-06 | 2004-02-06 | Non-electromagnetic radiation arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032757 CN2692887Y (en) | 2004-02-06 | 2004-02-06 | Non-electromagnetic radiation arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692887Y true CN2692887Y (en) | 2005-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032757 Expired - Fee Related CN2692887Y (en) | 2004-02-06 | 2004-02-06 | Non-electromagnetic radiation arrester |
Country Status (1)
| Country | Link |
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| CN (1) | CN2692887Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685956A (en) * | 2008-09-18 | 2010-03-31 | 西门子公司 | Lightning protection system for a wind turbine |
| CN102035140A (en) * | 2010-12-07 | 2011-04-27 | 无锡市格林电工装备有限公司 | Double-shielding lightning rod and earthing device |
| US20120057978A1 (en) * | 2008-02-29 | 2012-03-08 | Vestas Wind Systems A/S | Wind turbine with low electromagnetic radiation |
| CN104319723A (en) * | 2014-10-31 | 2015-01-28 | 中国联合网络通信集团有限公司 | Feeder protection system of mast distributed base station |
| CN106000644A (en) * | 2016-02-07 | 2016-10-12 | 北京华晶汇科技有限公司 | Efficient air purifier and purifying method |
-
2004
- 2004-02-06 CN CN 200420032757 patent/CN2692887Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120057978A1 (en) * | 2008-02-29 | 2012-03-08 | Vestas Wind Systems A/S | Wind turbine with low electromagnetic radiation |
| CN101685956A (en) * | 2008-09-18 | 2010-03-31 | 西门子公司 | Lightning protection system for a wind turbine |
| CN101685956B (en) * | 2008-09-18 | 2015-11-25 | 西门子公司 | For the lightning conductor system of wind turbine |
| CN102035140A (en) * | 2010-12-07 | 2011-04-27 | 无锡市格林电工装备有限公司 | Double-shielding lightning rod and earthing device |
| CN102035140B (en) * | 2010-12-07 | 2012-07-18 | 无锡市格林电工装备有限公司 | Earthing device of double-shielding lightning rod |
| CN104319723A (en) * | 2014-10-31 | 2015-01-28 | 中国联合网络通信集团有限公司 | Feeder protection system of mast distributed base station |
| CN104319723B (en) * | 2014-10-31 | 2017-02-08 | 中国联合网络通信集团有限公司 | Feeder protection system of mast distributed base station |
| CN106000644A (en) * | 2016-02-07 | 2016-10-12 | 北京华晶汇科技有限公司 | Efficient air purifier and purifying method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |