CN205863641U - Atmospheric electric field self adaptation lightning protection device - Google Patents

Atmospheric electric field self adaptation lightning protection device Download PDF

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Publication number
CN205863641U
CN205863641U CN201620763903.XU CN201620763903U CN205863641U CN 205863641 U CN205863641 U CN 205863641U CN 201620763903 U CN201620763903 U CN 201620763903U CN 205863641 U CN205863641 U CN 205863641U
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China
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self adaptation
electrode
protection device
electric field
lightning protection
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CN201620763903.XU
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刘淑琼
张平
孙勇
郑军
都明
凌进
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Chengdu Zhonghang Xinhong Technology Co Ltd
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Chengdu Zhonghang Xinhong Technology Co Ltd
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Abstract

This utility model relates to atmospheric electric field self adaptation lightning protection device.This lightning protection device includes that the electrostatic that metallic spheric surface electrode and the self adaptation discharge assembly of metallic spheric surface electrode electric connection and self adaptation discharge assembly are electrically connected with preserves electrode and preserves, with electrostatic, the metallic stud that electrode is electrically connected with.Electrostatic preserves electrode and is positioned at above metallic stud, and self adaptation discharge assembly is positioned at electrostatic and preserves above electrode, and metallic spheric surface electrode is positioned at above self adaptation discharge assembly.This lightning protection device connects sudden strain of a muscle probability by arranging the metallic spheric surface electrode reduction bigger than conventional lightning conductor needle point radius of curvature.In addition; its self adaptation discharge assembly utilizes the energy of atmospheric electric field self to start; constantly collect ground charge inducing; and immediately spread in air by metallic spheric surface electrode; neutralize the energy of thunder and lightning descending leader; thunderbolt main discharge is made not occur, thus the induced lightening that in reducing protection zone, direct lightning strike and direct lightning strike downlead produce and earth potential counterattack disaster.

Description

Atmospheric electric field self adaptation lightning protection device
Technical field
This utility model relates to anti-thunder technical field, in particular to a kind of atmospheric electric field self adaptation lightning protection device.
Background technology
Discharging rod in the market is divided into conventional lightning conductor and lightning rod, be no matter traditional Franklin pin also Be novel optimized lightning rod and discharging in advance pin etc. all be use thunder mode of actively drawing, when discharging rod upper end thundercloud electricity When lotus reaches to a certain degree, discharging rod will connect sudden strain of a muscle, lightning current by discharging rod, downlead, grounding device earial drainage to greatly, by force Big lightning current will produce powerful transient electromagnetic pulse radiation, at power line about, electricity around down conductor system Several kilovolts of even several ten thousand volt induced voltages will be produced on cable, telephone wire, antenna feeder, make the microelectronic device of rear end be broken Bad.
Utility model content
In consideration of it, the purpose of this utility model is to provide a kind of can reduction to connect the atmospheric electric field self adaptation lightning protection dodging probability Device, thus in reducing protection zone, people and equipment are injured by direct lightning strike and induced lightening.
This utility model provides a kind of atmospheric electric field self adaptation lightning protection device, including metallic spheric surface electrode and described metal Radius tip electrode be electrically connected with self adaptation discharge assembly and described self adaptation discharge assembly be electrically connected with electrostatic preserve electrode, And preserve, with described electrostatic, the metallic stud that electrode is electrically connected with.Described electrostatic preserves electrode and is positioned on described metallic stud Side, described self adaptation discharge assembly is positioned at described electrostatic and preserves above electrode, and described metallic spheric surface electrode is positioned at described self adaptation Above discharge assembly.
Further, described metallic spheric surface electrode is mushroom-shaped or hemispherical.
Further, stating metallic spheric surface electrode is coreless armature or solid electrode.
Further, described self adaptation discharge assembly includes self adaptation impedance transformer, structure capacitive and insulating sleeve.Institute The upper end electrode stating self adaptation impedance transformer is electrically connected with described metallic spheric surface electrode, lower end electrode is preserved with described electrostatic Electrode is electrically connected with, and an electrode of described structure capacitive is electrically connected with, separately with the upper end electrode of described self adaptation impedance transformer One electrode is electrically connected with the lower end electrode of described self adaptation impedance transformer.Described structure capacitive is located at described self adaptation impedance The outside of changer, described insulating sleeve is sheathed on the outside of described structure capacitive.
Further, the medium of described structure capacitive is made up of politef.
Further, described structure capacitive has four, and four described structure capacitives are uniformly located at described self adaptation impedance and are become The outside of parallel operation.
Further, described self adaptation discharge assembly includes self adaptation impedance transformer, epoxy resin compound inslation skeleton And insulating sleeve.The upper end electrode of described self adaptation impedance transformer and described metallic spheric surface electrode are electrically connected with, lower end electrode Preserve electrode with described electrostatic to be electrically connected with, one end of described epoxy resin compound inslation skeleton and described self adaptation impedance transformation The upper end electrode of device connects, the other end is connected with the lower end electrode of described self adaptation impedance transformer.Described epoxy resin is combined Insulation framework is located at the outside of described self adaptation impedance transformer, and described insulating sleeve is sheathed on described epoxy resin compound inslation The outside of skeleton.
Further, described insulating sleeve is polytetrafluoroethylene sleeve or silicone rubber sleeve.
Further, described insulating sleeve is multilamellar umbrella shape.
Further, described electrostatic preserves electrode is dished disk structure.
The atmospheric electric field self adaptation lightning protection device that this utility model provides, by arranging than conventional lightning conductor needle point curvature half The metallic spheric surface electrode that footpath is big, thus reduce and connect sudden strain of a muscle probability, and then in minimizing protection zone, people and equipment suffer direct lightning strike and sense The injury of Ying Lei.
Further, the atmospheric electric field self adaptation lightning protection device that this utility model provides, its self adaptation discharge assembly utilizes The energy of atmospheric electric field self starts, and constantly collects ground charge inducing, and immediately spreads to air by metallic spheric surface electrode In, neutralize the energy of thunder and lightning descending leader, make thunderbolt main discharge not occur, efficiently reduce sending out of direct lightning strike in protection zone Raw, in minimizing protection zone, direct lightning strike downlead produces simultaneously induced lightening and earth potential strike back disaster.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below Accompanying drawing be briefly described.Should be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other relevant accompanying drawings according to these accompanying drawings.
The operation principle signal of a kind of atmospheric electric field self adaptation lightning protection device that Fig. 1 provides for this utility model embodiment Figure.
The structural representation of a kind of atmospheric electric field self adaptation lightning protection device that Fig. 2 provides for this utility model embodiment.
The structural representation of the another kind of atmospheric electric field self adaptation lightning protection device that Fig. 3 provides for this utility model embodiment.
Title corresponding to each reference is as follows:
100-atmospheric electric field self adaptation lightning protection device, 110-metallic spheric surface electrode, 120-self adaptation discharge assembly, 130-is quiet Electricity preserves electrode, 140-metallic stud;
121-self adaptation impedance transformer, 122-structure capacitive, 123-insulating sleeve, 124-epoxy resin compound inslation bone Frame.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe.Obviously, described embodiment is only a part of embodiment of the present utility model rather than all Embodiment.Generally herein described in accompanying drawing and the assembly of this utility model embodiment that illustrates can be with various different joining Put and arrange and design.Therefore, below the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to Limit claimed scope of the present utility model, but be merely representative of selected embodiment of the present utility model.Based on this practicality Novel embodiment, the every other enforcement that those skilled in the art are obtained on the premise of not making creative work Example, broadly falls into the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
Referring to Fig. 1, this utility model embodiment provides a kind of atmospheric electric field self adaptation lightning protection device 100, described air Electric field self adaptation lightning protection device 100 includes that metallic spheric surface electrode 110 is adaptive with what described metallic spheric surface electrode 110 was electrically connected with The electrostatic answering discharge assembly 120 and described self adaptation discharge assembly 120 to be electrically connected with preserve electrode 130 and with described electrostatic Preserve the metallic stud 140 that electrode 130 is electrically connected with.Wherein, described electrostatic preserves electrode 130 and is positioned at described metallic stud 140 Top, described self adaptation discharge assembly 120 is positioned at described electrostatic and preserves the top of electrode 130, described metallic spheric surface electrode 110 It is positioned at the top of described self adaptation discharge assembly 120.
Described metallic spheric surface electrode 110 has been the effect of charge inducing in thundercloud field.Described metallic spheric surface electrode 110 can With in mushroom-shaped or hemispherical.Compared with needle point formula conventional lightning conductor, mushroom-shaped or the song of hemispheric metallic spheric surface electrode 110 Rate radius is bigger, thus the charge inducing density on metallic spheric surface electrode 110 surface is than the sense on needle point formula conventional lightning conductor needle point Answering charge density low, electric field intensity is little.Therefore, described metallic spheric surface electrode 110 connects sudden strain of a muscle probability than needle point formula conventional lightning conductor Low.
Described metallic spheric surface electrode 110 can be hollow or solid, by conductive material such as rustless steel, copper or aluminium alloy material Material etc. is made.In the present embodiment, alternatively, described metallic spheric surface electrode 110 is hollow mushroom-shaped, by stainless steel material system Become.
Referring to Fig. 2, described self adaptation discharge assembly 120 includes self adaptation impedance transformer 121, structure capacitive 122 and Insulating sleeve 123.The upper end electrode of described self adaptation impedance transformer 121 and described metallic spheric surface electrode 110 be electrically connected with, under Termination electrode and described electrostatic preserve electrode 130 and are electrically connected with.One electrode of described structure capacitive 122 becomes with described self adaptation impedance The upper end electrode of parallel operation 121 is electrically connected with, another electrode electrically connects with the lower end electrode of described self adaptation impedance transformer 121 Connect.Described structure capacitive 122 is located at the outside of described self adaptation impedance transformer 121, and described insulating sleeve 123 is sheathed on described The outside of structure capacitive 122.
Described self adaptation impedance transformer 121 is made up of composite oxide material, plays high low-impedance conversion and electric discharge is made With.When the virtual voltage at self adaptation impedance transformer 121 two ends is less than setting voltage value, at self adaptation impedance transformer 121 In high-impedance state, can automatically shut down.When the virtual voltage at self adaptation impedance transformer 121 two ends is higher than setting voltage value, from Adapt to impedance transformer 121 and become low resistive state from high-impedance state, i.e. have off-state to become conducting state.Alternatively, described The upper end electrode of self adaptation impedance transformer 121 passes through the conductor such as stud, clamp nut and described metallic spheric surface electrode 110 phase Even, lower end electrode is preserved electrode 130 by the conductor such as stud, clamp nut with described electrostatic and is connected, thus realizes self adaptation resistance Resistance parallel operation 121 preserves electrode 130 with described metallic spheric surface electrode 110 and electrostatic and is electrically connected with.
The medium of described structure capacitive 122 is made up of the material of good insulating.Alternatively, in the present embodiment, described knot The medium of structure electric capacity 122 is made up of politef.Polytetrafluoroethylmaterial material electrical insulating property is good, just can resist 15000 for 1 millimeter Volt high-tension electricity.Described structure capacitive can be multiple, such as, can have four, and four described structure capacitives 122 are uniformly located at institute State the outside of self adaptation impedance transformer 121.
Described insulating sleeve 123 is good by the electric insulation such as politef, silicone rubber, ageing-resistant, corrosion-resistant material system Become, keep out wind and rain for self adaptation impedance transformer 121 and structure capacitive 122, protection self adaptation impedance transformer 121 and structure electricity Hold 122, increase creep age distance and improve product insulating properties.Alternatively, in the present embodiment, described insulating sleeve 123 is by poly-four Fluorothene is made, in multilamellar umbrella shape.Polytetrafluoroethylmaterial material has: electrical insulating property is good, just can resist 15000 volts high for 1 millimeter Piezoelectricity.High temperature resistant, use operating temperature to reach 250 DEG C.Low temperature resistant, there is good mechanical tenacity, i.e. drop temperature to-196 DEG C, it is possible to keep the percentage elongation of 5%.Corrosion-resistant, energy strong alkali-acid resistance, water and various organic solvent.Weatherability, has in plastics Good aging life-span.Relatively low permeability, is exposed in air for a long time, and surface and property retention are constant.Do not adhere to, be solid material Surface tension minimum in material, does not adhere to any material.Thus, the insulating sleeve 123 using politef to make can be very Good protection self adaptation impedance transformer 121 and structure capacitive 122 are from natural erosion, and its good electrical insulating property and not gluing The characteristic such as attached can effectively increase creep age distance and improve product insulating properties.
Described electrostatic preserves electrode 130 and is made up of conductive material such as rustless steel, copper or aluminum alloy materials etc., plays electrostatic sense Should, electric charge preserves and the effect such as conduction.When described atmospheric electric field self adaptation lightning protection device 100 is under the effect of thundercloud, electrostatic stores up Colelctor electrode 130 sensing and the electric charge of metallic spheric surface electrode 110 diversity, form potential difference, along with preserving of electric charge is more and more, Voltage is the highest, when metallic spheric surface electrode 110 and electrostatic preserve the potential difference formed between electrode 130 more than self adaptation impedance transformation During the setting voltage value of device 121, self adaptation impedance transformer 121 is become low-resistance from high resistant, otherwise is become high resistant from low-resistance.Optional Ground, in the present embodiment, described electrostatic preserves electrode 130 and is made up of stainless steel material.Described electrostatic preserves electrode 130 in dish Disc structure.
Described metallic stud 140 is made up of conductive material such as rustless steel, copper or aluminum alloy materials etc..At the present embodiment In, described metallic stud 140 is made up of stainless steel material.Described metallic stud 140 one end preserves electrode 130 phase with described electrostatic Even, the other end is connected with the earth.
By above-mentioned setting, when space has charged thundercloud to occur, the metallic spheric surface electrode 110 under thundercloud is due to electrostatic The charges of different polarity in the zone of action of sensing, described electrostatic preserves the electric charge that electrode 130 sensing is contrary with metallic spheric surface electrode 110.When Metallic spheric surface electrode 110 and electrostatic preserve the voltage difference formed between electrode 130 and are less than the setting of self adaptation impedance transformer 121 During magnitude of voltage, self adaptation impedance transformer 121 is in high-impedance state, can automatically shut down.Now the electric field of thundercloud hinders to self adaptation Four structure capacitives 122 outside resistance parallel operation 121 charge, and metallic spheric surface electrode 110 does not connect sudden strain of a muscle, thus reduces direct lightning strike to guarantor Protect the injury of district's device within the domain.
When metallic spheric surface electrode 110 and electrostatic preserve the potential difference formed between electrode 130 more than self adaptation impedance transformation During the setting voltage value of device 121, self adaptation impedance transformer 121 is become low resistive state from high-impedance state, is i.e. become by off-state For conducting state.Four structure capacitives 122 are become discharge condition by charged state, are hindered by metallic spheric surface electrode 110, self adaptation Resistance parallel operation 121, structure capacitive 122, electrostatic preserve electrode 130 and metallic stud 140 forms electric charge movable passageway, from ground to Electrostatic preserves electrode 130 and metallic spheric surface electrode 110 loads and the opposite polarity electric charge of lightning leader, neutralizes the different of lightning leader Property electric charge.In the moment that lightning leader neutralizes, metallic spheric surface electrode 110 and electrostatic preserve the potential difference of electrode 130 less than adaptive The setting voltage value of impedance transformer 121, self adaptation impedance transformer 121 is answered to be become high-impedance state, self adaptation from low resistive state Impedance transformer 121 automatically shuts down.After above procedure, metallic spheric surface electrode 110 is returned to state when starting, and is ready to Neutralization next time to lightning leader.Therefore effectively reduce conventional lightning conductor frequently draw thunder enter ground and the induced lightening that produces and The earth potential counterattack injury to protection zone device within the domain.This electric discharge, neutralize lightning leader cyclic process in, self adaptation hinder Resistance parallel operation 121 is all to carry out under the automatically controlling of thundercloud electric field.
Should be understood that in implementation process, it is also possible to atmospheric electric field self adaptation lightning protection device 100 is carried out different structures and sets Meter.Referring to Fig. 3, this utility model provides a kind of atmospheric electric field self adaptation lightning protection device 100, metallic spheric surface electrode 110 in Hemispherical, can use epoxy resin compound inslation skeleton 124 replacing structure electric capacity 122, and insulating sleeve 123 uses silicone rubber umbrella Set.
Wherein, the upper end electrode of described self adaptation impedance transformer 121 and described metallic spheric surface electrode 110 be electrically connected with, Lower end electrode and described electrostatic preserve electrode 130 and are electrically connected with.One end of described epoxy resin compound inslation skeleton 124 is with described The upper end electrode of self adaptation impedance transformer 121 connects, the other end connects with the lower end electrode of described self adaptation impedance transformer 121 Connect.Described epoxy resin compound inslation skeleton 124 is located at the outside of described self adaptation impedance transformer 121, described insulating sleeve 123 outsides being sheathed on described epoxy resin compound inslation skeleton 124.
Described epoxy resin compound inslation skeleton 124, is made up of epoxy resin composite material, has good insulating properties, Play fixing, supporting role.In the present embodiment, described epoxy resin compound inslation skeleton 124 two ends and described self adaptation impedance The two ends of changer 121 connect, and play support, fixing described self adaptation impedance transformer 121 and keep described self adaptation impedance to become The effect of the two end electrodes mutually insulated of parallel operation 121.Epoxy resin composite material has a highest tensile strength, typically up to More than 600Mpa, is the twice of common iron, is 5-8 times of ceramic material, and has good dielectric properties and resistance to chemical attack Property, the best counter-bending fatigue, creep resistant and impact resistance.
Described insulating sleeve 123 is in multilamellar umbrella shape, refering to Fig. 3.Described insulating sleeve 123 is with high molecular polymer silicon rubber Glue is main body, has good hydrophobicity and an animal migration, and good corrosion-resistant, ageing-resistant, the performance such as electric insulation.Additionally, It also has the highest pollution flashover voltage and the energy of resistance to fragility, and voltage's distribiuting is uniform, its under equal conditions flashover voltage compared with porcelain It it is more than 2 times of porcelain.
The atmospheric electric field self adaptation lightning protection device 100 that this utility model embodiment provides, compares conventional lightning conductor by arranging The metallic spheric surface electrode 110 that needle point radius of curvature is big, thus reduce and connect sudden strain of a muscle probability, and then in minimizing protection zone, people and equipment meet with Injured by direct lightning strike and induced lightening.
Further, the atmospheric electric field self adaptation lightning protection device 100 that this utility model embodiment provides, its self adaptation is discharged Assembly 120 utilizes the energy of atmospheric electric field self to start, and constantly collects ground charge inducing, and by metallic spheric surface electrode 110 Immediately spread in air, neutralize the energy of thunder and lightning descending leader, make thunderbolt main discharge not occur, efficiently reduce protection zone The generation of interior direct lightning strike, in minimizing protection zone, direct lightning strike downlead produces simultaneously induced lightening and earth potential strike back disaster.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets Put ", should be interpreted broadly " being connected ", " connection ", connect for example, it may be fixing, it is also possible to be to removably connect, or integratedly Connect.Can be to be mechanically connected, it is also possible to be to be electrically connected with.Can be to be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be the connection of two element internals.For the ordinary skill in the art, can understand above-mentioned with concrete condition Term concrete meaning in this utility model.
In description of the present utility model, it should be noted that term " on ", D score, " interior ", the orientation of the instruction such as " outward " Or position relationship is based on orientation shown in the drawings or position relationship, or usually put when this utility model product uses Orientation or position relationship, be for only for ease of and describe this utility model and simplify description rather than instruction or the dress of hint indication Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this utility model Restriction.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims (10)

1. an atmospheric electric field self adaptation lightning protection device, it is characterised in that include metallic spheric surface electrode and described metallic spheric surface electricity Self adaptation discharge assembly and the electrostatic of described self adaptation discharge assembly electric connection that pole is electrically connected with preserve electrode, Yi Jiyu Described electrostatic preserves the metallic stud that electrode is electrically connected with;
Described electrostatic preserves electrode and is positioned at above described metallic stud, and described self adaptation discharge assembly is positioned at described electrostatic and preserves electricity Above pole, described metallic spheric surface electrode is positioned at above described self adaptation discharge assembly.
Atmospheric electric field self adaptation lightning protection device the most according to claim 1, it is characterised in that described metallic spheric surface electrode in Mushroom-shaped or hemispherical.
Atmospheric electric field self adaptation lightning protection device the most according to claim 2, it is characterised in that described metallic spheric surface electrode is Coreless armature or solid electrode.
Atmospheric electric field self adaptation lightning protection device the most according to claim 1, it is characterised in that described self adaptation discharge assembly Including self adaptation impedance transformer, structure capacitive and insulating sleeve, the upper end electrode of described self adaptation impedance transformer is with described Metallic spheric surface electrode is electrically connected with, lower end electrode is preserved electrode with described electrostatic and is electrically connected with, an electrode of described structure capacitive With the electric connection of the upper end electrode of described self adaptation impedance transformer, another electrode and the lower end of described self adaptation impedance transformer Electrode is electrically connected with;
Described structure capacitive is located at the outside of described self adaptation impedance transformer, and described insulating sleeve is sheathed on described structure capacitive Outside.
Atmospheric electric field self adaptation lightning protection device the most according to claim 4, it is characterised in that the medium of described structure capacitive It is made up of politef.
Atmospheric electric field self adaptation lightning protection device the most according to claim 5, it is characterised in that described structure capacitive has four Individual, and uniformly it is located at the outside of described self adaptation impedance transformer.
Atmospheric electric field self adaptation lightning protection device the most according to claim 1, it is characterised in that described self adaptation discharge assembly Including self adaptation impedance transformer, epoxy resin compound inslation skeleton and insulating sleeve, described self adaptation impedance transformer upper Termination electrode and described metallic spheric surface electrode are electrically connected with, lower end electrode is preserved electrode with described electrostatic and is electrically connected with, described epoxy One end of resin compounded insulation framework is connected with the upper end electrode of described self adaptation impedance transformer, the other end and described self adaptation The lower end electrode of impedance transformer connects;
Described epoxy resin compound inslation skeleton is located at the outside of described self adaptation impedance transformer, and described insulating sleeve is sheathed on The outside of described epoxy resin compound inslation skeleton.
8. according to the atmospheric electric field self adaptation lightning protection device described in claim 4 or 7, it is characterised in that described insulating sleeve is Polytetrafluoroethylene sleeve or silicone rubber sleeve.
Atmospheric electric field self adaptation lightning protection device the most according to claim 8, it is characterised in that described insulating sleeve is multilamellar Umbrella shape.
Atmospheric electric field self adaptation lightning protection device the most according to claim 1, it is characterised in that described electrostatic preserves electrode In dished disk structure.
CN201620763903.XU 2016-07-19 2016-07-19 Atmospheric electric field self adaptation lightning protection device Active CN205863641U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107706742A (en) * 2017-11-01 2018-02-16 江苏镇德电力设备有限公司 A kind of anti-lighting arrester for pipe joint
CN110265878A (en) * 2019-07-16 2019-09-20 宫全胜 Multiple ionization electric eliminating lotus lightning protection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107706742A (en) * 2017-11-01 2018-02-16 江苏镇德电力设备有限公司 A kind of anti-lighting arrester for pipe joint
CN110265878A (en) * 2019-07-16 2019-09-20 宫全胜 Multiple ionization electric eliminating lotus lightning protection device
CN110265878B (en) * 2019-07-16 2024-04-19 宫全胜 Multi-stage ionization charge-eliminating lightning protection device

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