CN109360696B - Double-bullet backup device for protection superposition mine of open-circuit type lower clamping position - Google Patents
Double-bullet backup device for protection superposition mine of open-circuit type lower clamping position Download PDFInfo
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- CN109360696B CN109360696B CN201811319434.2A CN201811319434A CN109360696B CN 109360696 B CN109360696 B CN 109360696B CN 201811319434 A CN201811319434 A CN 201811319434A CN 109360696 B CN109360696 B CN 109360696B
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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
-
- 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
-
- 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
- H01T1/08—Means for extinguishing arc using flow of arc-extinguishing fluid
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a double-bullet backup device for protecting superposition lightning of an open-circuit lower clamping position, which mainly comprises a device shell, an arc extinguishing turntable, a conductive metal plate, an arc striking rod, a clamping position rod, an induction coil, an upper cover and a rotating shaft, wherein the arc extinguishing turntable is arranged on the device shell; the bottom of one side of the device shell is provided with an air shot triggering position I and an air shot triggering position II side by side; one end of the clamping rod is electrically connected with one end of the induction coil, and the other end of the clamping rod extends to the edges below the air shot triggering position II and the air shot triggering position I; the arc extinguishing turntable is provided with an inner ring arc extinguishing air ball and an outer ring arc extinguishing air ball along the circumferential direction; an insulating layer is arranged on the back surface of the tail part of the other end of the L-shaped trigger electrode of the inner ring arc-extinguishing gas pill, and the front surface of the tail part of the other end of the L-shaped trigger electrode of the outer ring arc-extinguishing gas pill is contacted with the insulating layer. The invention has the advantages of simple structure, reasonable design, strong arc extinguishing capability, stable and reliable work and quick and convenient replacement of arc extinguishing gas pills.
Description
Technical Field
The invention relates to a lightning protection device of a power transmission line, in particular to a lightning-induced solid-phase arc extinction lightning protection device.
Background
Lightning protection of a power transmission line is always an important content of lightning protection work of an electric power department, and lightning faults are still one of important factors affecting the safety of a power grid. The lightning stroke of the power transmission line causes the flashover of the line junction insulator, and the power frequency follow current generated by the flashover damages the insulator string and the hardware fitting, so that the insulator string is burnt out and the wire is blown out, and the prevention of the superposition lightning is particularly serious. The traditional blocking type lightning protection mode is used for improving the grounding resistance of the pole tower, erecting the coupling ground wire and the lightning conductor, installing the line lightning arrester and the like, and only 50% of lightning accidents can be solved due to the limitation of the traditional blocking type lightning protection mode. In recent years, in order to further improve the reliability of power supply of a power transmission line, a power department adopts to install parallel protection gaps on the power transmission line to prevent lightning accidents. However, in actual operation, the parallel protection gap has the following obvious drawbacks:
firstly, parallel protection gaps are arranged at two ends of an insulator string, and the insulator string breakdown is prioritized in lightning strike through a method of shortening the creepage distance of the insulator string. The creepage distance of the insulator string is short-circuited, so that the overall lightning-proof level of the power transmission line of the power system is reduced to increase the lightning trip-out rate, and meanwhile, the power frequency insulation level of the power system is reduced during normal operation, and the probability of error breakdown of the parallel protection gap under temporary overvoltage and operation overvoltage is improved intangibly.
Secondly, when the power transmission line encounters lightning stroke, the parallel protection gap breaks down preferentially due to overvoltage caused by the lightning stroke, and lightning current is discharged into the ground, so that the power transmission line and electrical equipment are protected. However, the parallel protection gaps have no arc extinguishing capability, so that power frequency freewheels caused after the insulator string is flashover cannot be extinguished, the electric arcs are burnt for a long time between the protection gaps, the insulator string is damaged, and when serious, the power transmission line is possibly broken, and meanwhile, the electric arcs ablate electrodes to reduce the protection performance of the power transmission line. Finally, the circuit breaker is used for extinguishing the electric arc to protect the transmission line and equipment, and the method of 'tripping rate' and 'power supply reliability' is sacrificed for 'low accident rate'.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the double-bullet backup device for protecting the superposition lightning, which has the advantages of simple structure, reasonable design, strong arc extinguishing capability, stable and reliable work, and quick and convenient replacement of arc extinguishing gas pellets, and can effectively protect the open-circuit lower clamping position of the superposition lightning. The invention can provide more arc extinction times and reduce maintenance workload.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a double-bullet backup device for protecting superposition lightning of open-type lower clamping position mainly comprises a device shell, an arc extinguishing turntable, a conductive metal plate, an arc striking rod, a clamping position rod, an induction coil, an upper cover and a rotating shaft; the bottom of one side of the device shell is provided with an air shot triggering position I and an air shot triggering position II side by side, and an arc extinguishing cylinder is arranged below the air shot triggering position I and the air shot triggering position II; one end of the clamping rod is electrically connected with one end of the induction coil, and the other end of the clamping rod extends to the edges below the air shot triggering position II and the air shot triggering position I; one end of the arc striking rod is connected with the connecting fitting, and the other end of the arc striking rod penetrates through the induction coil) extends into the arc extinguishing cylinder; the other end of the induction coil is in sliding contact with the conductive metal plate; the arc-extinguishing turntable is arranged in the device shell, the center of the circle of the upper part of the arc-extinguishing turntable is connected with the upper cover of the device shell through a rotating shaft, the arc-extinguishing turntable can rotate around the rotating shaft, and a plane scroll spring for pushing the arc-extinguishing turntable to rotate is arranged at the center of the arc-extinguishing turntable; the conductive metal plate is arranged at the upper part of the arc extinguishing turntable; the arc-extinguishing turntable is provided with an inner ring arc-extinguishing air ball and an outer ring arc-extinguishing air ball along the circumferential direction, and under the action force of the plane spiral spring, the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball respectively enter an air ball trigger position I and an air ball trigger position II to wait for triggering arc extinguishing; one side of each inner ring quenching gas pill and one side of each outer ring quenching gas pill are respectively provided with an L-shaped trigger electrode and a groove, one end of each L-shaped trigger electrode is electrically connected with one trigger end of the corresponding inner ring quenching gas pill or outer ring quenching gas pill, the other end of each L-shaped trigger electrode extends out of the edge of the quenching turntable along the axial direction of the inner ring quenching gas pill or the outer ring quenching gas pill, and the tail part of each L-shaped trigger electrode is bent and extends downwards; when the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill trigger position I and a gas pill trigger position II, the front face of the tail part of the other end of the L-shaped trigger electrode of the inner ring arc-extinguishing gas pills is directly clamped by a clamping rod, and an electric connection relation is formed; the other trigger ends of the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball are respectively and electrically connected with the metal conductive plate; the tail front surface of the other end of the L-shaped trigger electrode of the arc-extinguishing gas pill of the outer ring is contacted with the insulating layer and is indirectly clamped by the clamping rod.
Further described, the clamping and dislocation modes of the inner ring arc extinguishing gas pill and the outer ring arc extinguishing gas pill are as follows: the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill triggering position I and a gas pill triggering position II at the same time, the tail parts of L-shaped triggering electrodes of the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills are clamped by clamping bars below the gas pill triggering position I and the gas pill triggering position II, the inner ring arc-extinguishing gas pills are in a state to be triggered, and the outer ring arc-extinguishing gas pills are in an insulated state; when the superimposed lightning strike occurs on the power transmission line, the first lightning strike is performed, the inner ring arc extinguishing gas pill is triggered, and then strong air flow is generated, so that an L-shaped trigger electrode at a groove on one side of the inner ring arc extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc extinguishing turntable, the front surface of the tail part of the other end of the L-shaped trigger electrode of the outer ring arc extinguishing gas pill is directly clamped by a vertical rod of a clamping rod, and the outer ring arc extinguishing gas pill is in a state to be triggered; the outer ring arc-extinguishing gas pill is triggered immediately after the second lightning stroke, strong air flow is generated after the outer ring arc-extinguishing gas pill is triggered, the L-shaped trigger electrode at the groove on one side of the outer ring arc-extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc-extinguishing turntable, and therefore the arc-extinguishing turntable can rotate under the action of the plane spiral spring after being successfully dislocated until the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill of the next row enter the gas pill trigger position I and the gas pill trigger position II respectively and simultaneously, and the L-shaped trigger electrode matched with the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill is clamped again by the clamping rod to wait for the next lightning stroke.
The invention is a new scientific research result obtained by further researching and improving the previous scientific research result of the inventor, namely a lightning-induced solid-phase arc extinguishing lightning protection device (CN 201610747255.3). The invention is provided with the inner ring quenching gas pill and the outer ring quenching gas pill, the two quenching gas pills with the same angle are arranged in the same row, the back of the L-shaped trigger electrode of the inner ring quenching gas pill which is triggered firstly is provided with an insulating layer to open a circuit between the two quenching gas pills, when the inner ring quenching gas pill which is triggered firstly acts, the insulating layer on the L-shaped trigger electrode retracts to enable the outer ring quenching gas pill which is triggered later to be communicated with a clamping rod loop, and when lightning stroke occurs again, the outer ring quenching gas pill which is triggered later on the same angle acts. When the superimposed lightning stroke occurs, a certain time is needed for changing the bullet relative to the action of a single clamping device because the time is longer than the time of the superimposed lightning stroke, so that the double-bullet backup is adopted, the bullet changing time is greatly reduced, and the superimposed lightning stroke is effectively protected.
As a further illustration of the present invention, the grooves are semi-circular grooves.
As further illustration of the invention, the clamping rod and the arc striking rod are iron metal rods or copper metal rods or aluminum metal rods.
As a further explanation of the invention, the arc extinguishing cylinder adopts a three-section structure, namely, the three-section arc extinguishing cylinder is connected by adopting a threaded connection mode.
As a further explanation of the invention, the device shell and the upper cover are connected by a shaft, and the arc extinguishing turntable is replaced by opening the upper cover.
The invention has the advantages that:
1. compared with a lightning-induced solid-phase arc-extinguishing lightning arrester, the arc-extinguishing gas pill is doubled, and the arc-extinguishing times are doubled.
2. Compared with a lightning-induced solid-phase arc-extinguishing lightning protection device, the lightning-extinguishing gas pill is added at the same angle, and the insulation layer is added, so that the other one can be triggered instantly after the triggering of the one arc-extinguishing gas pill, and the protection reliability of the stacked lightning stroke is higher.
3. Simple structure, reasonable in design, the arc extinguishing ability is strong, and job stabilization is reliable. The clamping structure is designed, so that the whole rotating mechanism can be reliably rotated and reliably stopped.
4. The structure is easier to automatically produce because of the insertion type. Namely, the L-shaped trigger electrode extends along the axial direction of the arc extinguishing gas pill, and the clamping rod is arranged below the gas pill trigger position, which is more beneficial to the production, assembly and other procedures of the device.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Reference numerals: the device comprises a 1-clamping rod, a 2-striking rod, a 3-induction coil, a 4-outer ring arc extinguishing gas pill, a 5-inner ring arc extinguishing gas pill, a 6-L-shaped trigger electrode and a 7-insulating layer.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Examples:
as shown in fig. 1, the double-bullet backup device for protecting superposition lightning of open-circuit lower clamping position mainly comprises a device shell, an arc extinguishing turntable, a conductive metal plate, an arc striking rod 2, a clamping position rod 1, an induction coil 3, an upper cover and a rotating shaft; the bottom of one side of the device shell is provided with an air shot triggering position I and an air shot triggering position II side by side, and an arc extinguishing cylinder is arranged below the air shot triggering position I and the air shot triggering position II; one end of the clamping rod 1 is electrically connected with one end of the induction coil 3, and the other end extends to the edges below the air shot triggering position II and the air shot triggering position I; one end of the arc striking rod 2 is connected with the connecting fitting, and the other end of the arc striking rod passes through the induction coil 3 and extends into the arc extinguishing cylinder; the other end of the induction coil 3 is in sliding contact with the conductive metal plate;
the arc-extinguishing turntable is arranged in the device shell, the center of the circle of the upper part of the arc-extinguishing turntable is connected with the upper cover of the device shell through a rotating shaft, the arc-extinguishing turntable can rotate around the rotating shaft, and a plane scroll spring for pushing the arc-extinguishing turntable to rotate is arranged at the center of the arc-extinguishing turntable; the conductive metal plate is arranged at the upper part of the arc extinguishing turntable; the arc-extinguishing turntable is provided with an inner ring arc-extinguishing air ball 5 and an outer ring arc-extinguishing air ball 4 along the circumferential direction, and under the action force of the plane scroll spring, the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball respectively enter an air ball trigger position I and an air ball trigger position II to wait for triggering arc extinguishing; one side of each inner ring quenching gas pill and one side of each outer ring quenching gas pill are respectively provided with an L-shaped trigger electrode 6 and a groove, one end of the L-shaped trigger electrode is electrically connected with one trigger end of the corresponding inner ring quenching gas pill or outer ring quenching gas pill, the other end of the L-shaped trigger electrode extends out of the edge of the quenching turntable along the axial direction of the inner ring quenching gas pill or the outer ring quenching gas pill, and the tail part of the L-shaped trigger electrode is bent and extends downwards; when the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill trigger position I and a gas pill trigger position II, the front face of the tail part of the other end of the L-shaped trigger electrode of the inner ring arc-extinguishing gas pills is directly clamped by a clamping rod, and an electric connection relation is formed; the other trigger ends of the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball are respectively and electrically connected with the metal conductive plate; the tail front surface of the other end of the L-shaped trigger electrode of the arc-extinguishing gas pill of the outer ring is contacted with the insulating layer and is indirectly clamped by the clamping rod.
The clamping and dislocation modes of the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball are as follows: the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill triggering position I and a gas pill triggering position II at the same time, the tail parts of L-shaped triggering electrodes of the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills are clamped by clamping bars below the gas pill triggering position I and the gas pill triggering position II, the inner ring arc-extinguishing gas pills are in a state to be triggered, and the outer ring arc-extinguishing gas pills are in an insulated state; when the superimposed lightning strike occurs on the power transmission line, the first lightning strike is performed, the inner ring arc extinguishing gas pill is triggered, and then strong air flow is generated, so that an L-shaped trigger electrode at a groove on one side of the inner ring arc extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc extinguishing turntable, the front surface of the tail part of the other end of the L-shaped trigger electrode of the outer ring arc extinguishing gas pill is directly clamped by a vertical rod of a clamping rod, and the outer ring arc extinguishing gas pill is in a state to be triggered; the outer ring arc-extinguishing gas pill is triggered immediately after the second lightning stroke, strong air flow is generated after the outer ring arc-extinguishing gas pill is triggered, the L-shaped trigger electrode at the groove on one side of the outer ring arc-extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc-extinguishing turntable, and therefore the arc-extinguishing turntable can rotate under the action of the plane spiral spring after being successfully dislocated until the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill of the next row enter the gas pill trigger position I and the gas pill trigger position II respectively and simultaneously, and the L-shaped trigger electrode matched with the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill is clamped again by the clamping rod to wait for the next lightning stroke.
The assembly connection relationship of parts and components not mentioned or defined in this embodiment can be implemented by referring to the prior patent "lightning-induced solid-phase arc extinguishing lightning protection device (CN 201610747255.3)".
Claims (6)
1. The double-bullet backup device for the protection superposition mine of the open-type lower clamping position mainly comprises a device shell, an arc extinguishing turntable, a conductive metal plate, an arc striking rod (2), a clamping position rod (1), an induction coil (3), an upper cover and a rotating shaft; the method is characterized in that: the bottom of one side of the device shell is provided with an air shot triggering position I and an air shot triggering position II side by side, and an arc extinguishing cylinder is arranged below the air shot triggering position I and the air shot triggering position II; one end of the clamping rod (1) is electrically connected with one end of the induction coil (3), and the other end of the clamping rod extends to the edges below the air shot triggering position II and the air shot triggering position I; one end of the arc striking rod (2) is connected with the connecting fitting, and the other end of the arc striking rod penetrates through the induction coil (3) and extends into the arc extinguishing cylinder; the other end of the induction coil (3) is in sliding contact with the conductive metal plate;
the arc-extinguishing turntable is arranged in the device shell, the center of the circle of the upper part of the arc-extinguishing turntable is connected with the upper cover of the device shell through a rotating shaft, the arc-extinguishing turntable can rotate around the rotating shaft, and a plane scroll spring for pushing the arc-extinguishing turntable to rotate is arranged at the center of the arc-extinguishing turntable; the conductive metal plate is arranged at the upper part of the arc extinguishing turntable; the arc extinguishing turntable is provided with an inner ring arc extinguishing gas pill (5) and an outer ring arc extinguishing gas pill (4) along the circumferential direction, and under the action force of the plane spiral spring, the inner ring arc extinguishing gas pill and the outer ring arc extinguishing gas pill respectively enter a gas pill trigger position I and a gas pill trigger position II to wait for triggering arc extinguishing; one side of each inner ring quenching gas pill and one side of each outer ring quenching gas pill are respectively provided with an L-shaped trigger electrode (6) and a groove, one end of each L-shaped trigger electrode is electrically connected with one trigger end of the corresponding inner ring quenching gas pill or outer ring quenching gas pill, the other end of each L-shaped trigger electrode extends out of the edge of the quenching turntable along the axial direction of the inner ring quenching gas pill or the outer ring quenching gas pill, and the tail part of each L-shaped trigger electrode is bent and extends downwards; when the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill trigger position I and a gas pill trigger position II, the front face of the tail part of the other end of the L-shaped trigger electrode of the inner ring arc-extinguishing gas pills is directly clamped by a clamping rod, and an electric connection relation is formed; the other trigger ends of the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball are respectively and electrically connected with the metal conductive plate; the tail front surface of the other end of the L-shaped trigger electrode of the arc-extinguishing gas pill of the outer ring is contacted with the insulating layer and is indirectly clamped by the clamping rod.
2. The open-circuit type lower clamping protection superposition mine dual-bullet backup device according to claim 1, wherein: the clamping and dislocation modes of the inner ring arc-extinguishing air ball and the outer ring arc-extinguishing air ball are as follows: the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills in the same row respectively enter a gas pill triggering position I and a gas pill triggering position II at the same time, the tail parts of L-shaped triggering electrodes of the inner ring arc-extinguishing gas pills and the outer ring arc-extinguishing gas pills are clamped by clamping bars below the gas pill triggering position I and the gas pill triggering position II, the inner ring arc-extinguishing gas pills are in a state to be triggered, and the outer ring arc-extinguishing gas pills are in an insulated state; when the superimposed lightning strike occurs on the power transmission line, the first lightning strike is performed, the inner ring arc extinguishing gas pill is triggered, and then strong air flow is generated, so that an L-shaped trigger electrode at a groove on one side of the inner ring arc extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc extinguishing turntable, the front surface of the tail part of the other end of the L-shaped trigger electrode of the outer ring arc extinguishing gas pill is directly clamped by a vertical rod of a clamping rod, and the outer ring arc extinguishing gas pill is in a state to be triggered; the outer ring arc-extinguishing gas pill is triggered immediately after the second lightning stroke, strong air flow is generated after the outer ring arc-extinguishing gas pill is triggered, the L-shaped trigger electrode at the groove on one side of the outer ring arc-extinguishing gas pill is bent along the groove, the tail part of the L-shaped trigger electrode is retracted into the arc-extinguishing turntable, and therefore the arc-extinguishing turntable can rotate under the action of the plane spiral spring after being successfully dislocated until the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill of the next row enter the gas pill trigger position I and the gas pill trigger position II respectively and simultaneously, and the L-shaped trigger electrode matched with the inner ring arc-extinguishing gas pill and the outer ring arc-extinguishing gas pill is clamped again by the clamping rod to wait for the next lightning stroke.
3. The open-circuit type lower clamping protection superposition mine dual-bullet backup device according to claim 1, wherein: the grooves are semicircular grooves.
4. The open-circuit type lower clamping protection superposition mine dual-bullet backup device according to claim 1, wherein: the clamping rod and the arc striking rod are iron metal rods or copper metal rods or aluminum metal rods.
5. The open-circuit type lower clamping protection superposition mine dual-bullet backup device according to claim 1, wherein: the arc extinguishing cylinder adopts a three-section structure, namely, the three-section arc extinguishing cylinder is connected by adopting a threaded connection mode.
6. The open-circuit type lower clamping protection superposition mine dual-bullet backup device according to claim 1, wherein: the device shell and the upper cover are connected by a shaft, and the arc extinguishing turntable is replaced by opening the upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319434.2A CN109360696B (en) | 2018-11-07 | 2018-11-07 | Double-bullet backup device for protection superposition mine of open-circuit type lower clamping position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319434.2A CN109360696B (en) | 2018-11-07 | 2018-11-07 | Double-bullet backup device for protection superposition mine of open-circuit type lower clamping position |
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| Publication Number | Publication Date |
|---|---|
| CN109360696A CN109360696A (en) | 2019-02-19 |
| CN109360696B true CN109360696B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811319434.2A Active CN109360696B (en) | 2018-11-07 | 2018-11-07 | Double-bullet backup device for protection superposition mine of open-circuit type lower clamping position |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB149618A (en) * | 1919-08-15 | 1920-11-18 | Vickers Electrical Co Ltd | Improvements in electrical-discharge-gap apparatus |
| GB526740A (en) * | 1939-01-12 | 1940-09-25 | Electr & Allied Ind Res Ass | Improvements in protective devices for electric circuits |
| CN106451079A (en) * | 2016-11-08 | 2017-02-22 | 王巨丰 | Compressed solid-phase synthesis arc extinguishing surge protection device |
| CN106451077A (en) * | 2016-08-28 | 2017-02-22 | 王巨丰 | Thunder-lightening induced solid-phase arc-extinguishing lightning arrester |
| CN107240858A (en) * | 2017-06-12 | 2017-10-10 | 国网山东省电力公司平原县供电公司 | A kind of new distribution circuit arc extinguishing lightning protection clearance apparatus |
| CN209000644U (en) * | 2018-11-07 | 2019-06-18 | 南宁超伏电气科技有限公司 | Double bullet back-up devices of the protection superposition thunder of detent under a kind of open ended |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1283575B2 (en) * | 2001-08-10 | 2011-03-23 | ABB Schweiz AG | Electric component protected against arc interference |
-
2018
- 2018-11-07 CN CN201811319434.2A patent/CN109360696B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB149618A (en) * | 1919-08-15 | 1920-11-18 | Vickers Electrical Co Ltd | Improvements in electrical-discharge-gap apparatus |
| GB526740A (en) * | 1939-01-12 | 1940-09-25 | Electr & Allied Ind Res Ass | Improvements in protective devices for electric circuits |
| CN106451077A (en) * | 2016-08-28 | 2017-02-22 | 王巨丰 | Thunder-lightening induced solid-phase arc-extinguishing lightning arrester |
| CN106451079A (en) * | 2016-11-08 | 2017-02-22 | 王巨丰 | Compressed solid-phase synthesis arc extinguishing surge protection device |
| CN107240858A (en) * | 2017-06-12 | 2017-10-10 | 国网山东省电力公司平原县供电公司 | A kind of new distribution circuit arc extinguishing lightning protection clearance apparatus |
| CN209000644U (en) * | 2018-11-07 | 2019-06-18 | 南宁超伏电气科技有限公司 | Double bullet back-up devices of the protection superposition thunder of detent under a kind of open ended |
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| Publication number | Publication date |
|---|---|
| CN109360696A (en) | 2019-02-19 |
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