CN215452058U - Lightning rod capable of attenuating lightning current intensity and steepness - Google Patents
Lightning rod capable of attenuating lightning current intensity and steepness Download PDFInfo
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- CN215452058U CN215452058U CN202121851619.5U CN202121851619U CN215452058U CN 215452058 U CN215452058 U CN 215452058U CN 202121851619 U CN202121851619 U CN 202121851619U CN 215452058 U CN215452058 U CN 215452058U
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Abstract
The utility model discloses a lightning rod capable of attenuating lightning current intensity and steepness, which belongs to the technical field of arc extinction and lightning protection and comprises an arc striking tip, an arc extinguishing device and a bottom screw rod, wherein the arc striking tip is arranged at the top end of the arc extinguishing device, the bottom screw rod is arranged at the bottom end of the arc extinguishing device and is arranged in a grounding mode, the arc extinguishing device comprises one or more than one sealed arc extinguishing unit or a recoil arc extinguishing unit and one or more than one sealed arc extinguishing unit, the sealed arc extinguishing unit and the sealed arc extinguishing unit are fixedly connected end to end, the bottom end of the lightning arresting device at the bottommost end is connected in a grounding mode, and the recoil arc extinguishing unit is arranged at the top end of the sealed arc extinguishing unit.
Description
Technical Field
The utility model relates to the technical field of arc extinction and lightning protection, in particular to a lightning rod capable of attenuating lightning current intensity and steepness.
Background
Thunder is a gas discharge phenomenon in nature, and presents an electromagnetic effect, a thermal effect and a mechanical effect in the thunder discharge process, so that the thunder discharge process has great harmfulness to buildings and electrical equipment. Generally, a lightning rod is used for protecting buildings, tall trees and the like from being struck by lightning, and the lightning rod is used for attracting lightning to strike the lightning rod and rapidly discharging the lightning current into the ground through a grounding device.
But the lightning rod still has some disadvantages. When a large lightning current is rapidly discharged to the ground through the lightning rod, the lightning current can generate a large instantaneous electromagnetic field, the large electromagnetic field can influence the circuits of electronic equipment, communication equipment and a power system in the magnetic field, the equipment can generate extra induced current, the equipment can generate misoperation if the equipment is light, and the equipment can be damaged if the equipment is heavy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a lightning rod capable of attenuating lightning current intensity and steepness, which solves the technical problems mentioned in the background technology. A liquid arc extinguishing unit is added in the lightning rod. The liquid arc extinguishing unit enhances the pressure generated in the arc extinguishing process, can cut off the electric arc rapidly, reduces the current amplitude, and avoids the damage of the discharged lightning current to the power electronic equipment.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an decay lightning current intensity and abrupt lightning rod, it is most advanced including the striking, arc control device and bottom screw rod, the striking is most advanced to be set up on arc control device's top, the bottom screw rod sets up in arc control device's bottom and ground connection setting, arc control device includes one and more sealed arc extinguishing unit, perhaps recoil arc extinguishing unit and one and more sealed arc extinguishing unit, sealed arc extinguishing unit connects fixed connection with sealed arc extinguishing unit end to end, the bottom ground connection of the lightning protection device of bottom, recoil arc extinguishing unit sets up the top at sealed arc extinguishing unit.
The hydro-electric effect and the Pascal effect enable the pressure in the ceramic tube to be increased, the temperature to be increased, acting force pointing to the center from the ceramic tube wall is generated, under the acting force, the electric arc moves towards the tip of the arc-extinguishing grid, the tip lengthens the length of the electric arc, under the condition that insulating oil blows the electric arc, the temperature of the electric arc is reduced, the electric arc is extinguished more quickly, the longer the electric arc formed in the ceramic tube is, the larger the acting force on the ceramic tube wall is, the larger the impact force for cutting the electric arc in reverse is, the action force rebounds after acting on the shell, the acting force pointing to the center of the insulating tube is formed, the electric arc is cut, the amplitude and the gradient of current are reduced, counterattack voltage is avoided, and induced lightning overvoltage is reduced.
Furthermore, the sealed arc extinguishing unit is arranged to be a sealing tube, the two ends of the sealing tube are respectively provided with an upper electrode and a lower electrode which are sealed, insulating oil is arranged in the sealing tube, and the side edge of the sealing tube is provided with a skirt edge.
Further, the sealing tube further comprises a ceramic tube and a protective shell, the protective shell is arranged on the outer side of the ceramic tube, and the skirt edge is arranged on the outer side of the protective shell.
Further, the upper electrode comprises an upper graphite electrode, a middle metal electrode and a lower graphite electrode, the middle metal electrode is fixed at one end of the ceramic tube and one end of the protective shell, the upper graphite electrode is arranged on the upper layer of the middle metal electrode, the lower graphite electrode is arranged at the bottom of the middle metal electrode and is arranged in the ceramic tube, the lower electrode comprises an upper graphite electrode and a bottom metal electrode, the bottom metal electrode is fixed at the other end of the ceramic tube and the other end of the protective shell, and the upper graphite electrode is arranged in the ceramic tube and is connected with the bottom metal electrode.
Furthermore, the sealed arc extinguishing unit is arranged to be a sealing tube, the two ends of the sealing tube are respectively provided with an upper electrode and a lower electrode which are sealed, insulating oil is arranged in the sealing tube, the side edge of the sealing tube is provided with a skirt edge, arc extinguishing grids are arranged on the inner side edge of the sealing tube at intervals, and the transverse length of each arc extinguishing grid is larger than the half inner diameter of the sealing tube.
Furthermore, the bottom of the upper electrode is provided with an upper tip electrode, the upper end of the lower electrode is provided with a lower tip electrode, the upper tip electrode and the lower tip electrode are arranged vertically relatively, and the upper tip electrode and the lower tip electrode are graphite electrodes.
Further, the arc extinguishing bars are made of insulating materials, the arc extinguishing bars are arranged into semicircular structures, the arc extinguishing bars arranged on the inner side walls of the two semicircles in the sealing tube are arranged alternately, convex piers are arranged between the arc extinguishing bars on the same semicircle, and the convex piers on the inner side wall of one semicircle are arranged opposite to the arc extinguishing bars on the inner side wall of the other semicircle.
Further, recoil arc extinguishing unit includes that the lightning receiving electrode, recoil body, recoil pipe shirt rim and bottom lightning receiving electrode, lightning receiving electrode set up on the top of recoil body, and the recoil pipe shirt rim sets up the side at the recoil body, and the recoil body is inside to be set up to the recoil hole, and the low side of recoil hole is provided with the bottom lightning receiving electrode, lightning receiving electrode and bottom lightning receiving electrode are graphite electrode, are provided with insulating liquid in the recoil body, the sealed bottom that sets up at the recoil hole of bottom lightning receiving electrode.
A method of attenuating lightning current intensity and steepness of a lightning rod, the method comprising the steps of,
step 1: before thunder and lightning forms, a thunder field is formed between thundercloud and the ground, because of electrostatic induction, charges with the polarity opposite to that of the thundercloud are induced in the insulating tube and accumulated in the sealed insulating tube, and because the liquid is incompressible fluid, the charges cannot move freely, and finally an arc chain is formed in the insulating tube; mutually repulsive coulomb force is generated among the charges with the same polarity, and the coulomb force acts on the pipe wall to form reaction force due to the sealing of the insulating pipe, so that the induced charge chain is cut off;
step 2: when arc discharge is initiated in the sealed tube filled with insulating oil, shock waves towards the side edges are generated by the liquid electricity effect;
and step 3: the Pascal effect enhances the liquid electric effect, when electric arcs act on the insulating oil, when a certain part of static insulating oil generates pressure intensity change, the electric arcs constantly transmit the pressure intensity to all directions of the inner side of the sealing pipe;
and 4, step 4: because the arc extinguishing bars are arranged in the sealed tube, the length of the electric arc in the sealed tube is prolonged, meanwhile, the convex piers (9) are arranged to increase the surface area of the sealed tube, and the shock waves of the liquid-electricity effect and the Pascal effect return to the side and then impact, so that the electric arc channel is intensively impacted and extinguished, and the arc extinguishing is completed.
Further, the specific process of step 2 is that arc discharge is initiated in the ceramic tube filled with insulating oil, part of the insulating oil in the discharge channel is instantly vaporized, decomposed and ionized into high-temperature plasma and suddenly expanded to form a mechanical pressure wave which rapidly spreads outwards, but the liquid can be regarded as a shock wave transmission medium which can not be compressed, so that the mechanical effect of power is shown to the outside when the discharge channel carries out liquid-phase discharge, an acting force which impacts the wall of the ceramic tube is formed in the ceramic tube, and the wall of the ceramic tube generates the shock wave in the insulating oil medium due to the interaction of the force;
the specific process of the step 3 is as follows: when an impact electric arc acts on the metal electrode, pressure is applied to insulating oil in the ceramic tube, a certain part of static fluid in the closed container generates pressure change according to the Pascal principle, the pressure is constantly transmitted to all directions, and then the insulating oil medium around is impacted by a larger acting force from a discharge channel in the ceramic tube, and the acting force rebounds after contacting the wall of the ceramic tube;
the concrete process of the step 4 is that the pressure in the ceramic tube is increased and the temperature is increased by the liquid electricity effect and the pascal effect, so that an acting force pointing to the center from the ceramic tube wall is generated, under the acting force, the electric arc moves towards the tip of the arc-extinguishing grid, the tip lengthens the length of the electric arc, and under the blowing of the insulating oil to the electric arc, the temperature of the electric arc is reduced, so that the electric arc is extinguished more quickly, the longer the electric arc formed in the ceramic tube is, the larger the acting force to the ceramic tube wall is, and the larger the impact force for cutting off the electric arc is, so that the arc extinction is completed.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
the utility model has the advantages that the arc is cut off rapidly, the discharge of the arc in liquid generates the liquid-electric effect, the impact pressure wave is formed rapidly, the impact arc is cut off immediately when being formed, the carbon emission is reduced, the liquid medium replaces the original conductive metal, the liquid medium is safer and cleaner, the carbon emission can be effectively reduced, the residual voltage is effectively inhibited, the liquid arc extinguishing unit can cut off the arc rapidly, the amplitude of the current is reduced, the huge residual voltage caused by the discharge of lightning current is avoided, the damage to power equipment is caused, the reignition of the impact arc is delayed, the continuous discharge condition and the reignition condition are destroyed by the high voltage in the ceramic tube, the reignition breakdown time is greatly delayed by more than ten microseconds after the impact arc is cut off, the gradient of the lightning current is reduced by 90 percent remarkably, and the amplitude of the current is attenuated by more than 50 percent.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a first sealed arc extinguishing unit according to the present invention;
fig. 3 is a schematic structural diagram of a second sealed arc extinguishing unit according to the utility model.
In the figure, 1-upper electrode, 2-insulating oil, 3-ceramic tube, 4-skirt edge, 5-protective shell, 6-lower electrode, 7-electric arc, 8-upper tip electrode, 9-arc-extinguishing grid, 10-convex pier, 11-lower tip electrode, 12-arc-striking tip, 13-bottom screw rod and A-sealed arc-extinguishing unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1:
as shown in fig. 1-2, a lightning rod for attenuating lightning current intensity and steepness comprises an arc striking tip 12, an arc extinguishing device and a bottom screw 13, wherein the arc striking tip 12 is arranged at the top end of the arc extinguishing device, the bottom screw 13 is arranged at the bottom end of the arc extinguishing device and is grounded, the arc extinguishing device comprises one or more sealed arc extinguishing units a, the sealed arc extinguishing units a and the sealed arc extinguishing units a are fixedly connected in an end-to-end manner, and the bottom end of the lightning protection device at the bottom end is grounded.
After lightning arrester; when the electric arc is poured into the insulating tube in the lightning rod, a liquid-electric effect can be generated, a strong shock wave is formed, and the shock wave acts on a discharge channel in an impulse or shock pressure mode to cut off the electric arc. The shed prevents electric arcs from leaking into the ground through the surface of the insulating tube, and limits an electric arc channel in the liquid arc extinguishing unit.
When the electric arc enters the insulating tube, a certain pressure is applied to the liquid in the insulating tube, and according to the Pascal principle, the pressure change of a certain part of the static fluid in the closed container is constantly transmitted to all directions, so that a larger acting force is inevitably generated on the inner wall of the insulating tube. The acting force rebounds after acting on the shell to form an acting force with the direction pointing to the center of the insulating tube, so that the aims of cutting off the electric arc, reducing the current amplitude and avoiding generating huge residual voltage are fulfilled.
In this embodiment, the sealed arc extinguishing unit a is configured as a sealed tube, the two ends of the sealed tube are respectively provided with an upper electrode 1 and a lower electrode 6 which are sealed, the sealed tube is provided with insulating oil 2, and the side edge of the sealed tube is provided with a skirt 4. The sealing tube further comprises a ceramic tube 3 and a protective shell 5, wherein the protective shell 5 is arranged on the outer side of the ceramic tube 3, and the skirt edge 4 is arranged on the outer side of the protective shell 5.
The upper electrode 1 includes upper graphite electrode, middle metal electrode and lower floor's graphite electrode, middle metal electrode fixes the one end at ceramic pipe 3 and protecting sheathing 5, upper graphite electrode sets up the upper strata at middle metal electrode, lower floor's graphite electrode sets up the bottom at middle metal electrode, and set up in ceramic pipe 3, lower electrode 6 includes upper end graphite electrode and bottom metal electrode, the other end at ceramic pipe 3 and protecting sheathing 5 is fixed to bottom metal electrode, upper end graphite electrode sets up in ceramic pipe 3, and be connected with bottom metal electrode.
Example 2:
as shown in fig. 3, the embodiment is different from embodiment 1 in that the sealed arc extinguishing unit a is configured as a sealed tube, the two ends of the sealed tube are respectively provided with an upper electrode 1 and a lower electrode 6 which are sealed, the sealed tube is provided with insulating oil 2, the side edge of the sealed tube is provided with a skirt 4, the inner side edge of the sealed tube is provided with arc extinguishing grids 9 at intervals, and the transverse length of the arc extinguishing grids 9 is greater than one-half of the inner diameter of the sealed tube. The bottom of the upper electrode 1 is provided with an upper tip electrode 8, the upper end of the lower electrode 6 is provided with a lower tip electrode 11, the upper tip electrode 8 and the lower tip electrode 11 are arranged vertically relatively, and the upper tip electrode 8 and the lower tip electrode 11 are both graphite electrodes.
In this embodiment, the arc-extinguishing bars 9 are made of insulating materials, the arc-extinguishing bars 9 are arranged in a semicircular structure, the arc-extinguishing bars 9 arranged on the inner side walls of the two semicircles in the sealed tube are arranged alternately, the convex piers 9 are arranged between the arc-extinguishing bars 9 on the same semicircle, and the convex piers 9 on the inner side wall of one semicircle are arranged opposite to the arc-extinguishing bars 9 on the inner side wall of the other semicircle.
The hydro-electric effect and the Pascal effect enable the pressure in the ceramic tube to be increased, the temperature to be increased, acting force pointing to the center from the wall of the ceramic tube is generated, under the acting force, the electric arc moves towards the tip of the arc-extinguishing grid, the tip lengthens the length of the electric arc, and under the condition that insulating oil blows the electric arc, the temperature of the electric arc is reduced, so that the electric arc is extinguished more quickly, the longer the electric arc formed in the ceramic tube is, the greater the acting force on the wall of the ceramic tube is, and the greater the impact force for cutting off the electric arc is, and arc extinction is completed.
Example 3:
the difference between this embodiment and embodiment 1 and 2 is that, still include recoil arc extinguishing unit, recoil arc extinguishing unit sets up on sealed arc extinguishing unit A's top, and recoil arc extinguishing unit is including connecing dodging electrode, recoil body, recoil pipe shirt rim and bottom to connect dodging the electrode, connects to dodge the electrode setting on the top of recoil body, and the side at the recoil body is set up to the recoil pipe shirt rim, and the recoil body is inside to set up to recoil vacancy, and the low side of recoil vacancy is provided with the bottom and connects dodging the electrode, it is graphite electrode to connect dodging electrode and bottom to connect and dodge the electrode, is provided with insulating liquid in the recoil body, the sealed bottom that sets up at the recoil vacancy of bottom connects dodging the electrode. The back-flushing unit is arranged to perform back-flushing weakening on the lightning arc, and then the sealed arc extinguishing unit A performs arc extinguishing, so that the current limiting effect can be well achieved.
The graphite electrode is arranged at the lightning receiving place, so that the service life can be effectively prolonged.
The graphite electrode has good conductivity, and is easy to introduce electric arc into the recoil pipe: graphite is a non-metallic material, and the conductivity of graphite is 100 times higher than that of general non-metallic ore. Graphite is an electrical conductor in that the periphery of each carbon atom in graphite is linked to three other carbon atoms arranged in a honeycomb pattern of many hexagons, and since each carbon atom gives off an electron, those electrons are free to move. Generally, the electrical discharge machining speed of the graphite electrode is 1.5 to 2 times faster than that of the copper electrode as a whole. When the power transmission line is struck by lightning, the graphite electrode can play a role in striking arcs, so that the arcs can smoothly enter the arc extinguishing pipe.
The graphite electrode has extremely high melting point, can bear larger current and is not easy to deform: graphite electrodes have the property of being able to withstand high current conditions. The softening point of copper is about 1000 ℃, and the copper is easy to deform due to heating; and the sublimation temperature of the graphite is about 3650 ℃. Lightning strike currents of between 5000 amperes and 5 kiloamperes, producing lightning strike temperatures of up to 3000 degrees. Therefore, the metal electrode is easy to deform under the action of lightning strike heavy current, generates metal powder, splashes, damages the structure of the arc extinguish chamber and influences the effect of recoil arc extinction, and the graphite electrode can effectively solve the problems.
The loss of the graphite electrode is small: the graphite electrode has the characteristic of bearing a large current condition, a polarity effect is generated under the action of lightning arcs, partial corrosion removal objects and carbon particles can be adhered to the surface of the electrode to form a protective layer, and the graphite electrode is ensured to have extremely low loss or even zero loss in the process of recoil arc extinguishing.
A method of attenuating lightning current intensity and steepness of a lightning rod, the method comprising the steps of,
step 1: before thunder and lightning forms, a thunder field is formed between thundercloud and the ground, because of electrostatic induction, charges with the polarity opposite to that of the thundercloud are induced in the insulating tube and accumulated in the sealed insulating tube, and because the liquid is incompressible fluid, the charges cannot move freely, and finally an arc chain is formed in the insulating tube; mutually repulsive coulomb force is generated among the charges with the same polarity, and the coulomb force acts on the pipe wall to form reaction force due to the sealing of the insulating pipe, so that the induced charge chain is cut off.
Step 2: when arc discharge is initiated in the sealed tube filled with insulating oil, the electrohydraulic effect generates shock waves which impact to the side edges. Arc discharge is initiated in the ceramic tube filled with insulating oil, part of the insulating oil in the discharge channel is instantly vaporized, decomposed and ionized into high-temperature plasma and suddenly expanded to form a mechanical pressure wave which is rapidly propagated outwards, but the liquid can be regarded as a shock wave transmission medium which can not be compressed, so that when the discharge channel is subjected to liquid-phase discharge, the mechanical effect of power is shown to the outside, an acting force which impacts the wall of the ceramic tube is formed in the ceramic tube, and the wall of the ceramic tube generates shock waves in the insulating oil medium due to the force interaction;
and step 3: the Pascal effect enhances the liquid electric effect, when the electric arc acts on the insulating oil 2, and when a certain part of the static insulating oil 2 generates pressure intensity change, the electric arc is constantly transmitted to all directions of the inner side of the sealing pipe. When an impact electric arc acts on the metal electrode to apply pressure to the insulating oil in the ceramic tube, according to the Pascal principle, a certain part of static fluid in the closed container generates pressure change, the pressure is constantly transmitted to all directions, and then the insulating oil medium around is impacted by a larger acting force from a discharge channel in the ceramic tube, and the acting force rebounds after contacting the wall of the ceramic tube.
And 4, step 4: because the arc extinguishing bars 9 are arranged in the sealed tube, the length of the electric arc in the sealed tube is lengthened, meanwhile, the convex piers 9 are arranged to increase the surface area of the sealed tube, the shock waves of the liquid-electricity effect and the Pascal effect return to the shock after impacting the side edge, the electric arc channel is intensively impacted and extinguished, and the arc extinguishing is completed. The hydro-electric effect and the Pascal effect enable the pressure in the ceramic tube to be increased, the temperature to be increased, acting force pointing to the center from the wall of the ceramic tube is generated, under the acting force, the electric arc moves towards the tip of the arc-extinguishing grid, the tip lengthens the length of the electric arc, and under the condition that insulating oil blows the electric arc, the temperature of the electric arc is reduced, so that the electric arc is extinguished more quickly, the longer the electric arc formed in the ceramic tube is, the greater the acting force on the wall of the ceramic tube is, and the greater the impact force for cutting off the electric arc is, and arc extinction is completed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. A lightning rod for attenuating lightning current intensity and steepness is characterized in that: including striking most advanced (12), arc control device and bottom screw rod (13), striking most advanced (12) set up on arc control device's top, and bottom screw rod (13) set up in arc control device's bottom and ground connection setting, and arc control device includes one and more sealed arc extinguishing unit (A), and sealed arc extinguishing unit (A) meet fixed connection end to end, the bottom ground connection of the lightning protection device of bottom.
2. A lightning rod for attenuating lightning current intensity and steepness according to claim 1, characterized in that: the sealed arc extinguishing unit (A) is arranged to be a sealed tube, the two ends of the sealed tube are respectively provided with an upper electrode (1) and a lower electrode (6) which are sealed, insulating oil (2) is arranged in the sealed tube, and the side edge of the sealed tube is provided with a skirt edge (4).
3. A lightning rod for attenuating lightning current intensity and steepness according to claim 2, characterized in that: the sealing tube further comprises a ceramic tube (3) and a protective shell (5), wherein the protective shell (5) is arranged on the outer side of the ceramic tube (3), and the skirt edge (4) is arranged on the outer side of the protective shell (5).
4. A lightning rod for attenuating lightning current intensity and steepness according to claim 3, characterized in that: upper electrode (1) includes upper graphite electrode, middle metal electrode and lower floor's graphite electrode, middle metal electrode fixes the one end at ceramic pipe (3) and protecting sheathing (5), upper graphite electrode sets up the upper strata at middle metal electrode, lower floor's graphite electrode sets up the bottom at middle metal electrode, and set up in ceramic pipe (3), lower electrode (6) are including upper end graphite electrode and bottom metal electrode, the other end at ceramic pipe (3) and protecting sheathing (5) is fixed to bottom metal electrode, upper end graphite electrode sets up in ceramic pipe (3), and be connected with bottom metal electrode.
5. A lightning rod for attenuating lightning current intensity and steepness according to claim 1, characterized in that: the sealed arc extinguishing unit (A) is arranged to be a sealed tube, the two ends of the sealed tube are respectively provided with an upper electrode (1) and a lower electrode (6) which are sealed, insulating oil (2) is arranged in the sealed tube, the side edge of the sealed tube is provided with a skirt edge (4), arc extinguishing grids (9) are arranged on the inner side edge of the sealed tube at intervals, and the transverse length of each arc extinguishing grid (9) is greater than the half inner diameter of the sealed tube.
6. A lightning rod for attenuating lightning current intensity and steepness according to claim 5, characterized in that: the bottom of the upper electrode (1) is provided with an upper tip electrode (8), the upper end of the lower electrode (6) is provided with a lower tip electrode (11), the upper tip electrode (8) and the lower tip electrode (11) are vertically arranged relatively, and the upper tip electrode (8) and the lower tip electrode (11) are graphite electrodes.
7. A lightning rod for attenuating lightning current intensity and steepness according to claim 6, characterised in that: arc extinguishing bars (9) are made by insulating material, and arc extinguishing bars (9) set up to semicircular structure, and arc extinguishing bars (9) that two semicircle inside walls set up in the sealed tube set up alternately, are provided with protruding mound (10) between arc extinguishing bars (9) on the same semicircle, and protruding mound (10) of a semicircle inside wall set up with arc extinguishing bars (9) of another semicircle inside wall relatively.
8. A lightning rod for attenuating lightning current intensity and steepness according to claim 7, characterised in that: the back-flushing arc extinguishing unit comprises a flash electrode, a back-flushing pipe skirt and a bottom flash electrode, the flash electrode is arranged on the top of the back-flushing pipe body, the back-flushing pipe skirt is arranged on the side edge of the back-flushing pipe body, a back-flushing hole is formed in the back-flushing pipe body, the bottom of the back-flushing hole is provided with a bottom flash electrode, the flash electrode and the bottom flash electrode are graphite electrodes, insulating liquid is arranged in the back-flushing pipe body, and the bottom flash electrode is arranged at the bottom of the back-flushing hole in a sealing mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121851619.5U CN215452058U (en) | 2021-08-09 | 2021-08-09 | Lightning rod capable of attenuating lightning current intensity and steepness |
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| CN202121851619.5U CN215452058U (en) | 2021-08-09 | 2021-08-09 | Lightning rod capable of attenuating lightning current intensity and steepness |
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| CN215452058U true CN215452058U (en) | 2022-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594877A (en) * | 2021-08-09 | 2021-11-02 | 南宁超伏电气科技有限公司 | Lightning rod capable of attenuating lightning current intensity and gradient and method thereof |
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2021
- 2021-08-09 CN CN202121851619.5U patent/CN215452058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594877A (en) * | 2021-08-09 | 2021-11-02 | 南宁超伏电气科技有限公司 | Lightning rod capable of attenuating lightning current intensity and gradient and method thereof |
| CN113594877B (en) * | 2021-08-09 | 2023-11-24 | 南宁超伏电气科技有限公司 | Lightning rod for attenuating lightning current intensity and gradient and method thereof |
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