CN111834064B - Semi-closed double-recoil arc-extinguishing lightning protection device and application thereof - Google Patents
Semi-closed double-recoil arc-extinguishing lightning protection device and application thereof Download PDFInfo
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- CN111834064B CN111834064B CN201910305150.6A CN201910305150A CN111834064B CN 111834064 B CN111834064 B CN 111834064B CN 201910305150 A CN201910305150 A CN 201910305150A CN 111834064 B CN111834064 B CN 111834064B
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- 239000012212 insulator Substances 0.000 claims description 27
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- 238000000034 method Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 22
- 238000010891 electric arc Methods 0.000 description 18
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- 229910052755 nonmetal Inorganic materials 0.000 description 2
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- 208000025274 Lightning injury Diseases 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
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Abstract
The invention discloses a semi-closed double-recoil arc-extinguishing lightning protection device and application thereof, mainly comprising an arc-extinguishing body and a recoil arc-extinguishing component; the inside of the arc extinguishing body is of a hollow structure, a partition board is longitudinally arranged in the middle of the inside of the arc extinguishing body, and the partition board divides the space inside the arc extinguishing body into two recoil pouring arc extinguishing channels; the upper end of the backflushing pouring arc extinguishing channel at the left side is fixedly provided with a backflushing arc extinguishing component, and the lower end of the backflushing pouring arc extinguishing channel is provided with a backflushing spout which extends vertically downwards; the upper end of the recoil pouring arc extinguishing channel on the right side is provided with a recoil nozzle extending to the side surface of the arc extinguishing body, and the lower end of the recoil pouring arc extinguishing channel is fixedly provided with a recoil arc extinguishing component. The invention can restrict and control the arc path and eliminate the harm of arc drift; the invention has wide application range, one-time installation, long-term repeated use, low running cost and high sensitivity, and is beneficial to the safe production of electric power.
Description
Technical Field
The invention belongs to a lightning protection device for an overhead transmission and distribution line, and relates to a semi-closed double-recoil arc extinguishing lightning protection device and application thereof.
Background
At present, lightning accidents are frequent in areas such as overhead power transmission and distribution lines, substations, power plants and the like, and accidents caused by lightning strokes bring great challenges to safe, stable and reliable operation of a power system and bring great influence to national economic development and people living standard. How to effectively perform arc extinguishing lightning protection and improve the safety, stability and reliability of a power system is always an important research content of the power department, and the existing arc extinguishing lightning protection means mainly performs protection by additionally installing an arc extinguishing lightning protection device in a power system line; but from the technical requirements of lightning protection devices: comprehensive analysis of the safety, effectiveness, durability, economy and maintainability shows that the technical level of the existing lightning protection device is difficult to achieve in-place.
In this regard, the applicant and the related inventors have made a great deal of research on the technical requirements of lightning protection devices, and found that the existing lightning protection devices still have the following problems: (1) the arc extinguishing effect is poor, a condensation electrode effect is generated when an electric arc passes, the gas generating material is baked by the low-temperature electric arc, so that the gas generating effect is poor, and the arc extinguishing effect is poor due to the contradiction between the condensation electrode effect and the arc extinguishing formed by high-temperature baking of the gas generating material; (2) the arc extinguishing sensitivity is not high, the arc extinguishing effect is not good when a small arc passes through, the large arc can only accurately act through the lower multi-chamber, and the relay protection action, namely the tripping accident, can be caused by the large arc circulation, so that the multi-chamber arc extinguishing sensitivity is not ideal; (3) the durability is not high, the gas generating material needs to be baked to generate gas under the high temperature condition, and the gas generating material in the arc extinguishing device is consumed under the high temperature condition, so that the durability is not good; (4) the operation mode is affected, so that an arc extinguishing dead zone exists, and the arc extinguishing lightning protection effect is poor.
Disclosure of Invention
Aiming at the problems, the invention provides a semi-closed double-recoil arc-extinguishing lightning protection device and application thereof, and the device has better arc-extinguishing effectiveness and durability.
In order to achieve the above object, the technical scheme of the present invention is as follows:
a semi-closed double-recoil arc extinguishing lightning protection device comprises an arc extinguishing body and a recoil arc extinguishing assembly; the inside of the arc extinguishing body is of a hollow structure, a partition board is longitudinally arranged in the middle of the inside of the arc extinguishing body, the partition board divides the space inside the arc extinguishing body into two recoil pouring arc extinguishing channels, and a wall electrode is arranged on the partition board; the upper end of the backflushing pouring arc extinguishing channel at the left side is fixedly provided with a backflushing arc extinguishing component, and the lower end of the backflushing pouring arc extinguishing channel is provided with a backflushing spout which extends vertically downwards; the upper end of the recoil pouring arc extinguishing channel on the right side is provided with a recoil nozzle extending to the side surface of the arc extinguishing body, and the lower end of the recoil pouring arc extinguishing channel is fixedly provided with a recoil arc extinguishing component; the recoil arc extinguishing components are provided with electrodes; the electrode is divided into an upper electrode arranged on a recoil arc extinguishing component of a recoil pouring arc extinguishing channel which is vertically downwards opened and a lower electrode arranged on the recoil arc extinguishing component of the recoil pouring arc extinguishing channel which is opened towards the side surface of the arc extinguishing body.
The invention further provides that the recoil arc extinguishing assembly mainly comprises a recoil tube and a lightning receptor; the recoil arc extinguishing component is a semi-closed pipe fitting with a hollow interior and one open end and the other closed end; the lightning receptor is electrically connected with the electrode.
The electrode and the lightning receptor are both made of metal or nonmetal with strong conductivity, and can guide an electric arc to enter the recoil filling arc extinguishing channel; the recoil tube is made of a non-conductive metal material with high strength and strong pressure resistance.
The invention further discloses that the opening of the injection cylinder is provided with an arc guide ring. The arc guide ring is made of metal or nonmetal with strong conductivity, and is matched with the wall electrode to guide the arc to the recoil filling arc extinguishing channel at the other side.
The invention further discloses that the outer surface of the arc extinguishing body is provided with a skirt edge. The skirt edge is arranged, so that the creepage distance can be increased, and arc creeping discharge is avoided.
The invention further describes that the wall electrode adopts a lower electrode plate or a compression arc extinguishing tube or a backflushing tube. The wall electrode can effectively disperse arc energy, so that the arc is easier to extinguish.
The invention further discloses that the opening of the recoil spout extending to the side face of the arc extinguishing body is inclined downwards. The downward opening can effectively prevent rainwater or dust from entering the inside of the jet airflow channel.
The invention can be applied to arc extinction and lightning protection on a power transmission line, a transformer substation, a circuit breaker, a transformer or a series compensation device.
In the practical application process, two ends of an insulator chain of a power transmission line are respectively provided with a semi-closed double-recoil arc-extinguishing lightning protection device through a fixing fitting, and a lower electrode of the semi-closed double-recoil arc-extinguishing lightning protection device at the low-voltage end of the insulator chain points to an upper electrode of the semi-closed double-recoil arc-extinguishing lightning protection device at the high-voltage end of the insulator chain, namely an air gap exists between the two semi-closed double-recoil arc-extinguishing lightning protection devices. The semi-closed double-recoil arc extinguishing lightning protection device is arranged at the low-voltage end of the insulator string, and an upper electrode of the semi-closed double-recoil arc extinguishing lightning protection device is electrically connected with the low-voltage end of the insulator string; the semi-closed double-recoil arc extinguishing lightning protection device is arranged at the high-voltage end of the insulator string, and the lower electrode of the semi-closed double-recoil arc extinguishing lightning protection device is electrically connected with the high-voltage end of the insulator string.
Or a semi-closed double-recoil arc-extinguishing lightning protection device is arranged at the low-voltage end of the insulator string of the power transmission line through the fixed hardware fitting, and the upper electrode of the semi-closed double-recoil arc-extinguishing lightning protection device is directly and electrically connected with the fixed hardware fitting; a high-voltage electrode is fixedly arranged at the high-voltage end of an insulator string of the power transmission line; the lower electrode of the semi-closed double-recoil arc-extinguishing lightning protection device points to the high-voltage electrode, namely an air gap exists between the semi-closed double-recoil arc-extinguishing lightning protection device and the high-voltage electrode.
An air gap with weaker insulating property is arranged beside the insulator string, so that lightning overvoltage generated when a lightning rod tower or a lightning conductor breaks down the air gap preferentially, and an arc is led into the semi-closed double-recoil arc extinguishing lightning protection device, so that the arc is prevented from directly flashover on the surface of the insulator string, and the insulator string is protected to the greatest extent.
The working principle of the invention is as follows:
the arc extinguishing lightning protection device is arranged on one side or two sides of the insulator string, so that a preferential flashover air gap is generated near the insulator string; through insulation fit, lightning overvoltage generated when a tower or a lightning conductor is struck by lightning preferentially breaks down an air gap channel connected with an insulator string in parallel, so that the insulator string is protected, an arc formed enters a semi-closed double-recoil arc-extinguishing lightning protection device, the arc can enter the arc-extinguishing lightning protection device through upper electrode traction, the recoil-filling arc-extinguishing channel is very thin, a thick lightning arc can be deformed into an elongated arc when entering the recoil-filling arc-extinguishing channel, the whole recoil-filling arc-extinguishing channel is filled with the thick lightning arc, the recoil-filling arc-extinguishing channel can generate acting force on the arc to finally form a pressure explosion effect, the passage of subsequent arcs is blocked, and the arc is cut off; when the electric arc enters the backflushing arc extinguishing assembly from the arc guide ring, the electric arc is limited by the wall of the backflushing tube because the electric arc is elastically deformed plasma, when the electric arc enters the starting end of the backflushing tube, the density, the speed and the temperature are increased, the pressure in the tube is increased, the explosion effect is finally generated, the electric arc impacts the lightning arrester at the bottom of the backflushing tube, the electric arc is reversely elastically stressed at the bottom of the blocked backflushing tube, and the advancing direction of most electric arc is changed by 180 degrees; the bouncing arc, due to the greater speed, density, and pressure, the cavity effect acts on the outer arc at the inlet, causing the arc at the port of the backwash tube to intercept until the arc is extinguished. In addition, if the residual arc still remains after the one-time backflushing arc extinction, under the combined action of the arc guide ring and the wall electrode, the residual arc which is not extinguished is pulled into the backflushing arc extinction component in the semi-closed backflushing pouring arc extinction channel at the other side, the backflushing arc extinction action is carried out again, and the arc is thoroughly extinguished.
The invention is compared with a multi-chamber series arc extinguishing product:
(1) Durability comparison. The gas generating material which is generally added into the multi-chamber series arc extinguishing products needs to be baked to generate gas under the high temperature condition, so that the gas generating material in the multi-chamber arc extinguishing device is consumed under the high temperature environment, and the durability is poor; the pouring material adopted by the invention has no consumption factor, does not need to be extinguished by a gas production mechanism, and has good durability.
(2) And comparing the arc extinguishing effects. Every two adjacent electrodes in the multi-chamber series arc extinguishing product generate a condensation electrode effect when the electric arc passes through, namely the temperature of the electric arc below the adjacent electrodes is lower, the gas generating material is roasted by the low-temperature electric arc, so that the gas generating effect is poor, and the arc extinguishing effect is poor due to the contradiction between the condensation electrode effect and the high-temperature gas generating material through roasting; the invention adopts a narrow tube pouring mechanism, the electric arc collision generates huge arc extinguishing energy, and the arc extinguishing effect is excellent by using the self energy of the electric arc and the collision arc extinguishing.
(3) And comparing the arc extinguishing sensitivity. According to the durability and the arc extinguishing effect, as the durability of the multi-chamber series arc extinguishing product is affected by high temperature, the gas production is affected by electrode condensation electrode effect, namely, the low-temperature arc baking capability is extremely low, the contradiction between the condensation electrode effect and the high-temperature baking gas production forming arc extinguishing is caused, the small arc has poor arc extinguishing effect when passing through, the large arc can only act correctly through the lower multi-chamber series arc extinguishing product, and the relay protection action, namely, the tripping accident, is caused by the large arc circulation, so the multi-chamber arc extinguishing sensitivity is not ideal; the invention has high sensitivity, and no matter whether large electric arc or small electric arc exists, only electric arc is needed to enter the invention to generate a perfusion mechanism.
(4) And comparing the operation modes. According to the sensitivity analysis, the actions of the multi-chamber series arc extinguishing products are influenced by external factors such as a system operation mode, short circuit current and the like, arc extinguishing dead areas exist, and lightning protection matching of the multi-chamber series arc extinguishing products is very difficult; the invention has no influence of external factors such as system operation mode, short circuit current and the like.
The invention has the following advantages and beneficial effects:
1. the double-recoil arc-extinguishing lightning protection device can realize effective arc extinction aiming at different arc directions; and the high air pressure generated in the semi-closed recoil arc extinguishing component can accelerate the recovery strength of the medium, so that the arc is extinguished more quickly.
2. The partition plate is provided with the wall electrode, so that arc energy can be effectively dispersed, and the arc is easy to extinguish.
3. The invention has wide application range and is not influenced by the arrangement of wires, the tower type effect of the tower and the polarity effect.
4. The invention can restrict and control the arc path and eliminate the harm of arc drift; the arc extinguishing device can extinguish the arc at the impact arc extinguishing section and destroy the power frequency arc establishing channel, and ensures that the relay protection device is not perceived.
5. The invention is installed once, has no ageing influence of the composite insulator core rod, can be reused for a long time, and has low operation cost only by periodically replacing the recoil device; the insulator flashover problem can be effectively prevented, the lightning trip-out rate of the power equipment is reduced, the power facilities are protected, the reliability of the power grid is improved, and the safety production of the power is facilitated.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
Fig. 2 is a schematic view of a recoil arc assembly of the present invention.
FIG. 3 is a schematic view of an application installation location of the present invention.
Fig. 4 is a schematic overall structure of a further embodiment of the present invention.
Fig. 5 is a schematic overall structure of a further embodiment of the present invention.
Fig. 6 is a schematic overall structure of another embodiment of the present invention.
In the figure, the serial numbers and corresponding names:
the high-voltage arc extinguishing device comprises a 1-insulator string, a 2-low voltage end, a 3-high voltage end, a 4-arc extinguishing body, a 5-recoil arc extinguishing component, a 6-recoil nozzle, a 7-wall electrode, an 8-partition plate, a 9-recoil pouring arc extinguishing channel, a 10-skirt, an 11-arc guiding ring, a 12-recoil tube, a 13-lightning receptor, a 14-electrode, a 141-upper electrode and a 142-lower electrode.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
example 1:
as shown in fig. 1, a semi-closed double-recoil arc extinguishing lightning protection device comprises an arc extinguishing body 4 and a recoil arc extinguishing assembly 5; the inside of the arc extinguishing body 4 is of a hollow structure, a partition plate 8 is longitudinally arranged in the middle position inside the arc extinguishing body 4, the partition plate 8 divides the internal space of the arc extinguishing body 4 into two recoil pouring arc extinguishing channels 9, and a wall electrode 7 is arranged on the partition plate 8; the upper end of the backflushing pouring arc extinguishing channel at the left side is fixedly provided with a backflushing arc extinguishing component, and the lower end of the backflushing pouring arc extinguishing channel is provided with a backflushing spout which extends vertically downwards; the upper end of the recoil pouring arc extinguishing channel on the right side is provided with a recoil nozzle extending to the side surface of the arc extinguishing body, and the lower end of the recoil pouring arc extinguishing channel is fixedly provided with a recoil arc extinguishing component; the recoil arc extinguishing components are provided with electrodes 14; the electrodes 14 are divided into an upper electrode 141 mounted on the recoil arc extinguishing assembly of the recoil filling arc extinguishing passage opened vertically downward and a lower electrode 142 mounted on the recoil arc extinguishing assembly of the recoil filling arc extinguishing passage opened toward the side of the arc extinguishing body.
As shown in fig. 2, the recoil arc extinguishing assembly 5 is mainly composed of a recoil tube 12 and a lightning receptor 13; the recoil arc extinguishing assembly 5 is a semi-closed pipe fitting with a hollow interior and one end open and the other end closed; the lightning receptor 13 is electrically connected to the electrode 14. An arc guide ring 11 is arranged at the opening of the recoil pipe 12. The outer surface of the arc extinguishing body 4 is provided with a skirt edge 10. The wall electrode 7 adopts a lower electrode plate.
The practical application of the embodiment is as follows:
as shown in fig. 3, two ends of an insulator chain 1 of a power transmission line are respectively provided with a semi-closed double-recoil arc extinguishing lightning protection device through a fixed fitting, and an upper electrode of the semi-closed double-recoil arc extinguishing lightning protection device is directly and electrically connected with the fixed fitting; the lower electrode of one of the semi-closed double-recoil arc extinguishing lightning protection devices points to the lower electrode of the other semi-closed double-recoil arc extinguishing lightning protection device, namely an air gap exists between the two semi-closed double-recoil arc extinguishing lightning protection devices.
Example 2:
as shown in fig. 4, this embodiment is basically the same in structure and principle as embodiment 1, except that the wall electrode 7 is a compressed arc extinguishing tube. The compression arc extinguishing pipe adopts a ceramic pipe, and an arc guiding metal ball is arranged at the middle position of the pipe.
Practical application of the embodiment:
a semi-closed double-recoil arc extinguishing lightning protection device is arranged at a low-voltage end 2 of an insulator string 1 of the power transmission line through a fixed fitting, and an upper electrode of the semi-closed double-recoil arc extinguishing lightning protection device is directly and electrically connected with the fixed fitting; a high-voltage electrode is fixedly arranged at a high-voltage end 3 of an insulator chain 1 of the power transmission line; the lower electrode of the semi-closed double-recoil arc-extinguishing lightning protection device points to the high-voltage electrode, namely an air gap exists between the semi-closed double-recoil arc-extinguishing lightning protection device and the high-voltage electrode.
Example 3:
as shown in fig. 5, this embodiment is basically the same in structure and principle as embodiment 1, except that the wall electrode 7 is a recoil tube. The back flushing pipe is a semi-closed pipe body with one end open and the other end provided with a lightning receiving electrode.
Example 4:
as shown in fig. 6, the present embodiment has substantially the same structure and principle as embodiment 3, except that the opening of the recoil spout extending toward the side of the arc extinguishing body is inclined downward.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A semi-closed double-recoil arc extinguishing lightning protection device comprises an arc extinguishing body (4) and a recoil arc extinguishing assembly (5); the method is characterized in that: the inside of the arc extinguishing body (4) is of a hollow structure, a partition board (8) is longitudinally arranged in the middle of the inside of the arc extinguishing body (4), the partition board (8) divides the space inside the arc extinguishing body (4) into two recoil pouring arc extinguishing channels (9), and a wall electrode (7) is arranged on the partition board (8); the upper end of the backflushing pouring arc extinguishing channel at the left side is fixedly provided with a backflushing arc extinguishing component, and the lower end of the backflushing pouring arc extinguishing channel is provided with a backflushing spout which extends vertically downwards; the upper end of the recoil pouring arc extinguishing channel on the right side is provided with a recoil nozzle extending to the side surface of the arc extinguishing body, and the lower end of the recoil pouring arc extinguishing channel is fixedly provided with a recoil arc extinguishing component; the recoil arc extinguishing components are provided with electrodes (14); the electrode (14) is divided into an upper electrode (141) mounted on the recoil arc extinguishing assembly of the recoil filling arc extinguishing passage opened vertically downward and a lower electrode (142) mounted on the recoil arc extinguishing assembly of the recoil filling arc extinguishing passage opened to the side of the arc extinguishing body.
2. The semi-enclosed double-recoil arc extinguishing lightning protection device according to claim 1, wherein: the recoil arc extinguishing assembly (5) mainly comprises a recoil tube (12) and a lightning receptor (13); the recoil arc extinguishing component (5) is a semi-closed pipe fitting with a hollow interior and one open end and the other closed end; the lightning receptor (13) is electrically connected with the electrode (14).
3. The semi-enclosed double-recoil arc extinguishing lightning protection device according to claim 2, wherein: an arc guide ring (11) is arranged at the opening of the recoil pipe (12).
4. The semi-enclosed double-recoil arc extinguishing lightning protection device according to claim 1, wherein: the outer surface of the arc extinguishing body (4) is provided with a skirt edge (10).
5. The semi-enclosed double-recoil arc extinguishing lightning protection device according to claim 1, wherein: the wall electrode (7) adopts a lower electrode plate or a compression arc extinguishing tube or a backflushing tube.
6. The semi-enclosed double-recoil arc extinguishing lightning protection device according to claim 1, wherein: the opening of the recoil nozzle extending to the side face of the arc extinguishing body is inclined downwards.
7. The semi-enclosed double-recoil arc extinguishing lightning protection device according to any one of claims 1-6, characterized in that: the arc extinguishing lightning protection device is applied to an electric transmission line, a transformer substation, a circuit breaker, a transformer or a series compensation device.
8. Use of a semi-closed double recoil arc extinguishing lightning protection device according to any of the claims 1-6, characterized in that: the two ends of the insulator string (1) of the power transmission line are respectively provided with a semi-closed double-recoil arc-extinguishing lightning protection device through a fixed fitting, and the lower electrode of the semi-closed double-recoil arc-extinguishing lightning protection device at the low-voltage end of the insulator string points to the upper electrode of the semi-closed double-recoil arc-extinguishing lightning protection device at the high-voltage end of the insulator string, namely an air gap exists between the two semi-closed double-recoil arc-extinguishing lightning protection devices.
9. Use of a semi-closed double recoil arc extinguishing lightning protection device according to any of the claims 1-6, characterized in that: a semi-closed double-recoil arc-extinguishing lightning protection device is arranged at the low-voltage end of an insulator chain (1) of the power transmission line through a fixed fitting, and an upper electrode of the semi-closed double-recoil arc-extinguishing lightning protection device is directly and electrically connected with the fixed fitting; a high-voltage electrode is fixedly arranged at the high-voltage end of an insulator chain (1) of the power transmission line; the lower electrode of the semi-closed double-recoil arc-extinguishing lightning protection device points to the high-voltage electrode, namely an air gap exists between the semi-closed double-recoil arc-extinguishing lightning protection device and the high-voltage electrode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910305150.6A CN111834064B (en) | 2019-04-16 | 2019-04-16 | Semi-closed double-recoil arc-extinguishing lightning protection device and application thereof |
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| CN201910305150.6A CN111834064B (en) | 2019-04-16 | 2019-04-16 | Semi-closed double-recoil arc-extinguishing lightning protection device and application thereof |
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| CN111834064A CN111834064A (en) | 2020-10-27 |
| CN111834064B true CN111834064B (en) | 2023-11-10 |
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| CN102486954A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN106451077A (en) * | 2016-08-28 | 2017-02-22 | 王巨丰 | Thunder-lightening induced solid-phase arc-extinguishing lightning arrester |
| CN106229240A (en) * | 2016-08-29 | 2016-12-14 | 河北冀高电力器材开发有限公司 | A kind of outdoor high-voltage blast enclosure fuse |
| CN107578864A (en) * | 2017-08-24 | 2018-01-12 | 王巨丰 | A kind of tortuous synchronous compression arc extinguishing lightning protection device with four side injection channels |
| CN209766141U (en) * | 2019-04-16 | 2019-12-10 | 段小嬿 | Semi-closed double-recoil arc-extinguishing lightning protection device |
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