CN107481822B - Split combined type compression arc extinguishing pipe - Google Patents
Split combined type compression arc extinguishing pipe Download PDFInfo
- Publication number
- CN107481822B CN107481822B CN201710735847.8A CN201710735847A CN107481822B CN 107481822 B CN107481822 B CN 107481822B CN 201710735847 A CN201710735847 A CN 201710735847A CN 107481822 B CN107481822 B CN 107481822B
- Authority
- CN
- China
- Prior art keywords
- arc
- pipe
- half pipe
- guide piece
- arc guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006835 compression Effects 0.000 title claims abstract description 26
- 238000007906 compression Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000010891 electric arc Methods 0.000 description 7
- 239000012212 insulator Substances 0.000 description 6
- 230000008033 biological extinction Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a split combined type compression arc extinguishing pipe, which comprises an arc extinguishing pipe main body and a middle arc guide piece (3); the arc extinguishing pipe main body consists of a left half pipe (1) and a right half pipe (2); the inner diameters of the two ends of the left half pipe (1) are the same and smaller than the diameter of the middle arc guide piece (3), and the outer diameter of the left half pipe (1) is smaller than or equal to the diameter of the middle arc guide piece (3); the inner diameter of one end of the right half pipe (2) is the same as that of the left half pipe (1), and the inner diameter of the other end of the right half pipe is larger than or equal to that of the middle arc guide piece (3); after the middle arc guide piece (3) is placed in the right half pipe (2), the left half pipe (1) is embedded into the right half pipe (2), and the middle arc guide piece (3) is fixed in the arc extinguishing pipe main body. The invention has simple structure, reasonable design, stronger arc extinguishing capability and stable and reliable work.
Description
Technical Field
The invention relates to a component of a lightning protection device in a power transmission line, in particular to a split combined type compression arc extinguishing tube.
Background
Lightning is an important factor affecting the safety of the transmission line, occupies the first trip of the line fault for a long time, is a natural process of atmospheric activity and is not controllable so far. But we can find the lightning rule by analyzing the frequent accidents, and strengthen the prevention. Such as towers in mountain highways or peak tops, transmission lines near ponds or reservoirs, towers crossing mountain or rivers and lakes, and towers and rock towers installed at high ground resistance, transmission lines and the like are important points of easy lightning damage.
The lightning strike can bring different forms of damage and destruction to electric facilities, lightning strike overvoltage can be caused in an electric power system by lightning cloud discharge, and common overvoltage in overhead lines is overvoltage on a power transmission line by electromagnetic induction nearby the overhead lines and overvoltage generated by direct striking of lightning on a wire. Overvoltage is caused by lightning strike, and damage to insulators and transmission lines is possibly caused; the insulator flashover discharge caused by lightning strike can cause burn and fall off on the porcelain surface or reticular cracks on the glass insulator, so that the insulation strength is greatly reduced; lightning strikes on a transmission line or a lightning conductor, which may cause strand breakage or even breakage, so that transmission work cannot be performed.
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 impact flashover caused by the lightning strike of the power transmission line causes the flashover of the line insulator, so that a large power frequency freewheel is generated, the insulator string and the hardware fitting are damaged, and the line accident is caused. The electric power department generally adopts a lightning protection device for a transmission line adding line to realize protection.
The electric arc is free gas with high temperature and high conductivity, and is extinguished, and is short for arc extinction. There are various methods of arc extinction, most of which use some gas or liquid to undertake the primary arc extinction.
The lightning protection device is an electrical device which can release lightning or can release overvoltage energy of an electric power system operation, protect electrical equipment from instantaneous overvoltage, cut off follow current and avoid causing system grounding short circuit.
3. The most applied valve block lightning protection device in the transmission line now, this kind of valve block exists the resistance, on the one hand can make the thunderbolt overvoltage exceed standard, heat accumulation, and the heat is difficult to give off, leads to the arrester explosion easily, lightning protection failure, on the other hand, the arrester lightning protection still need be through the ground net fall hinder, the lightning conductor interception, strengthen aspects such as insulation and strengthen lightning protection effect, and reduce ground net resistance and have technical bottleneck, ground net resistance is difficult to reduce to ideal state.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the split combined type compression arc-extinguishing tube which has the advantages of simple structure, reasonable design, stronger arc-extinguishing capability and stable and reliable work.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a split combined compression arc-extinguishing tube comprises an arc-extinguishing tube main body and a middle arc-guiding piece; the arc extinguishing pipe main body consists of a left half pipe and a right half pipe; the inner diameter of the tubes at the two ends of the left half tube is the same and smaller than the diameter of the middle arc guide piece, and the outer diameter of the tubes of the left half tube is smaller than or equal to the diameter of the middle arc guide piece; the inner diameter of one end of the right half pipe is the same as that of the left half pipe, and the inner diameter of the other end of the right half pipe is larger than or equal to that of the middle arc guide piece; after the middle arc guide piece is placed in the right half pipe, the left half pipe is embedded into the right half pipe, and the middle arc guide piece is fixed in the arc extinguishing pipe main body.
The arc extinguishing pipe main body consists of two parts, and the pipe diameters or diameters of the left half pipe, the right half pipe and the middle arc guiding piece are correspondingly limited, so that the middle arc guiding piece can be fixed inside the arc extinguishing pipe main body, the middle arc guiding piece is ensured not to be blown out of the pipe by strong air flow, and the compression arc extinguishing pipe loses the arc guiding effect.
The invention further discloses that the left half pipe and the right half pipe are directly nested and connected together or are respectively provided with internal and external threads and then connected together by adopting the threads.
The invention further discloses that the outer surface of the left half pipe is provided with a limiting circular disc. The limiting disc can limit the right half pipe, namely limit the connection length of the left half pipe and the right half pipe.
The invention further discloses that the skirt edge is arranged on the outer surface of the arc extinguishing pipe main body. The compression arc-extinguishing tube with the skirt edge not only can play a role in fixing the compression arc-extinguishing tube, but also can effectively prevent the electric arc from directly flashover along the outer surface of the compression arc-extinguishing tube when being placed in an arc-extinguishing channel in the lightning protection device.
The invention further discloses that the middle arc guide piece is a round ball arc guide piece or a round sheet arc guide piece with holes or a double-sided conical arc guide piece or a double-sided nail arc guide piece. The middle arc guide pieces are provided with sharp endpoints, so that the middle arc guide pieces have an ultra-strong arc striking effect, the electric arcs are ensured to be attracted and enter the compression arc extinguishing tube, and the electric arcs are flashover in a designated arc extinguishing path.
In the invention, the middle arc guide piece is made of graphite or metal.
The working principle of the invention is as follows:
first stage (compression temperature rise effect)
When lightning stroke occurs, the electric arc can be attracted by the striking electrode and enter the arc extinguishing path, on one hand, the arc extinguishing path can elongate the electric arc, on the other hand, the arc extinguishing pipe is made of heat insulation materials, the electric arc forms large-area contact with the inner wall of a cold channel of the arc extinguishing pipe in a very short time, the periphery of an arc column is immediately cooled, and the radius of the arc column is reduced. The reduction of the radius of the arc column can suck a large amount of gas outside the pipeline and increase the self resistance, so that the central temperature of the arc column is increased sharply.
Second stage (temperature rise directional explosion arc extinguishing effect)
The sucked gas will rise rapidly due to the heat transfer temperature, the volume will increase rapidly, the radial self-expanding gas flow will develop into an axial self-expanding gas flow due to the pressure of the inner wall of the pipe, this axial self-expanding gas flow will blow out the elongated fragile arc longitudinally from the centre of the arc extinguishing pipe towards the two ends of the pipe, at the end of the arc extinguishing pipe the arc will develop from extremely compressed state to free state, and it will be ejected directly out of the pipe along the arc movement direction (longitudinal blowing, the arc will be elongated and weakened longitudinally). By longitudinally blowing in the whole arc extinguishing path, the arc is continuously and longitudinally elongated, the energy originally concentrated at the axis of the arc column is released and developed outside the pipeline in a spraying state, the energy of the arc in the arc extinguishing path is gradually reduced, and finally the end of the arc extinguishing path is grounded.
Third stage (arc self-extinguishing effect, line-to-ground capacitance inhibiting arc re-ignition principle)
The energy stored by the initial arc is less, once the arc is cut off in the second stage, a tiny fracture appears, the fracture can rapidly extend to a full gap, an avalanche effect of an arc opening appears, and arc plasma can rapidly annihilate and be converted into an insulating state;
after the fracture occurs, the compressed pipeline is extinguished to destroy the lightning arc, and the capacitor voltage is equivalent to that of the arc fracture, so that the power frequency freewheels do not have a passage to flow through an insulator and can only discharge through a capacitor to the ground, and the capacitor voltage cannot be suddenly changed, so that the power frequency voltage of the arc slowly rises from the beginning to almost zero, and the possibility that the tiny fracture is broken down and reburned by the power frequency voltage does not exist.
The invention has the advantages that:
1. simple structure, reasonable in design, the arc extinguishing ability is strong, and work is more reliable and stable. The middle arc guide piece is arranged at the middle position of the compression arc extinguishing pipe and is provided with sharp end points, so that the middle arc guide piece has a super-strong arc striking effect, the electric arc is ensured to be attracted, enters the compression arc extinguishing pipe and is flashover in a designated arc extinguishing path. The arc extinguishing pipe main body is composed of two parts, and the pipe diameter or the diameter of the left half pipe, the right half pipe and the middle arc guiding piece are correspondingly limited, so that the middle arc guiding piece can be fixed inside the arc extinguishing pipe main body, the middle arc guiding piece is ensured not to be blown out of the pipe by strong air flow, and the compression arc extinguishing pipe is enabled to lose the arc guiding effect.
2. All-gas channel. The other arc extinguishing principles all need arc extinguishing materials, and have material loss; for example, bake extinction by baking the gas generating material generates a gas flow extinction, which requires wastage. The arc extinguishing energy source of the arc extinguishing principle is an impact arc, and the energy of the impact arc is utilized to extinguish the arc through a certain structure, so that other materials are not needed, and no energy loss is caused.
3. The invention is provided with a skirt edge; when placing the compression arc-extinguishing pipe in the arc-extinguishing channel in the lightning protection device, the skirt edge not only can play a role in fixing the compression arc-extinguishing pipe, but also can effectively prevent the electric arc from directly flashover along the outer surface of the compression arc-extinguishing pipe.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the split structure of fig. 1.
Reference numerals:
1-left half tube, 2-right half tube, 3-middle arc guide piece and 4-limit wafer.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1:
as shown in fig. 1-2, a split combined compression arc extinguishing pipe comprises an arc extinguishing pipe main body and an intermediate arc guide 3; the arc extinguishing pipe main body consists of a left half pipe 1 and a right half pipe 2; the inner diameters of the two ends of the left half pipe 1 are the same and smaller than the diameter of the middle arc guide piece 3, and the outer diameter of the left half pipe 1 is smaller than the diameter of the middle arc guide piece 3; the inner diameter of one end of the right half pipe 2 is the same as that of the left half pipe 1, and the inner diameter of the other end of the right half pipe is equal to that of the middle arc guide piece 3; after the middle arc guide piece 3 is placed in the right half pipe 2, the left half pipe 1 is embedded into the right half pipe 2, and the middle arc guide piece 3 is fixed in the arc extinguishing pipe main body. The middle arc guide piece is a spherical arc guide piece.
Example 2:
a split combined compression arc-extinguishing tube comprises an arc-extinguishing tube main body and a middle arc-guiding piece 3; the arc extinguishing pipe main body consists of a left half pipe 1 and a right half pipe 2; the inner diameters of the two ends of the left half pipe 1 are the same and smaller than the diameter of the middle arc guide piece 3, and the outer diameter of the left half pipe 1 is equal to the diameter of the middle arc guide piece 3; the inner diameter of one end of the right half pipe 2 is the same as that of the left half pipe 1, and the inner diameter of the other end of the right half pipe is equal to that of the middle arc guide piece 3; after the middle arc guide piece 3 is placed in the right half pipe 2, the left half pipe 1 is embedded into the right half pipe 2, and the middle arc guide piece 3 is fixed in the arc extinguishing pipe main body. The middle arc guide piece is a double-sided conical arc guide piece. The left half pipe 1 and the right half pipe 2 are respectively provided with internal and external threads and then are connected together by adopting threads.
Example 3:
a split combined compression arc-extinguishing tube comprises an arc-extinguishing tube main body and a middle arc-guiding piece 3; the arc extinguishing pipe main body consists of a left half pipe 1 and a right half pipe 2; the inner diameters of the two ends of the left half pipe 1 are the same and smaller than the diameter of the middle arc guide piece 3, and the outer diameter of the left half pipe 1 is equal to the diameter of the middle arc guide piece 3; the inner diameter of one end of the right half pipe 2 is the same as that of the left half pipe 1, and the inner diameter of the other end of the right half pipe is equal to that of the middle arc guide piece 3; after the middle arc guide piece 3 is placed in the right half pipe 2, the left half pipe 1 is embedded into the right half pipe 2, and the middle arc guide piece 3 is fixed in the arc extinguishing pipe main body. The middle arc guide piece is a double-sided nail arc guide piece. The outer surface of the arc extinguishing pipe main body is provided with a skirt edge.
Claims (5)
1. A split combined compression arc-extinguishing tube comprises an arc-extinguishing tube main body and a middle arc-guiding piece (3); the method is characterized in that: the arc extinguishing pipe main body consists of a left half pipe (1) and a right half pipe (2); the inner diameters of the two ends of the left half pipe (1) are the same and smaller than the diameter of the middle arc guide piece (3), and the outer diameter of the left half pipe (1) is smaller than or equal to the diameter of the middle arc guide piece (3); the inner diameter of one end of the right half pipe (2) is the same as that of the left half pipe (1), and the inner diameter of the other end of the right half pipe is larger than or equal to that of the middle arc guide piece (3); after the middle arc guide piece (3) is placed in the right half pipe (2), the left half pipe (1) is embedded into the right half pipe (2), and the middle arc guide piece (3) is fixed in the arc extinguishing pipe main body.
2. The split combined type compression arc extinguishing pipe according to claim 1, wherein: the left half pipe (1) and the right half pipe (2) are directly connected in a nested way or are respectively provided with internal and external threads and then connected together by adopting threads.
3. The split combined type compression arc extinguishing pipe according to claim 1 or 2, wherein: the outer surface of the left half pipe (1) is provided with a limiting circular piece (4).
4. The split combined type compression arc extinguishing pipe according to claim 1, wherein: the outer surface of the arc extinguishing pipe main body is provided with a skirt edge.
5. The split combined type compression arc extinguishing pipe according to claim 1, wherein: the middle arc guide piece is a round ball arc guide piece or a round sheet arc guide piece with holes or a double-sided conical arc guide piece or a double-sided nail arc guide piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735847.8A CN107481822B (en) | 2017-08-24 | 2017-08-24 | Split combined type compression arc extinguishing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735847.8A CN107481822B (en) | 2017-08-24 | 2017-08-24 | Split combined type compression arc extinguishing pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107481822A CN107481822A (en) | 2017-12-15 |
| CN107481822B true CN107481822B (en) | 2023-11-03 |
Family
ID=60601440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710735847.8A Active CN107481822B (en) | 2017-08-24 | 2017-08-24 | Split combined type compression arc extinguishing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107481822B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611245B (en) * | 2019-10-16 | 2023-10-24 | 南宁超伏电气科技有限公司 | Recoil compression combined arc extinguishing method and device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1876617A1 (en) * | 2006-07-06 | 2008-01-09 | ABB PATENT GmbH | Electrical installation switch with pre-arcing chamber, arcing horns and current limiting arc chute |
| CN102486956A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
| CN103474183A (en) * | 2012-06-08 | 2013-12-25 | 王巨丰 | Voltage-sharing type lightning-protection clearance device capable of deeply restraining power frequency, follow current and electric arcs |
| WO2014047758A1 (en) * | 2012-09-27 | 2014-04-03 | Wang Jufeng | No-freewheeling arc lightning protection gap protecting device |
| CN203826144U (en) * | 2013-11-13 | 2014-09-10 | 王巨丰 | Multi-gap self-expanding strong-airflow longitudinal-blowing arc-extinguishing lightning protection device |
| CN104701743A (en) * | 2015-02-10 | 2015-06-10 | 王巨丰 | Countable cut arc lightning arrester |
| CN106356162A (en) * | 2016-10-24 | 2017-01-25 | 王巨丰 | Arc extinguishing and lightning protection insulator |
| CN106451078A (en) * | 2016-08-30 | 2017-02-22 | 王巨丰 | Electric arc compressed arc-extinguishing lightning protection gap device |
| CN207217201U (en) * | 2017-08-24 | 2018-04-10 | 王巨丰 | A kind of separate assembling compresses arc-extinguishing tube |
-
2017
- 2017-08-24 CN CN201710735847.8A patent/CN107481822B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1876617A1 (en) * | 2006-07-06 | 2008-01-09 | ABB PATENT GmbH | Electrical installation switch with pre-arcing chamber, arcing horns and current limiting arc chute |
| CN102486956A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
| CN103474183A (en) * | 2012-06-08 | 2013-12-25 | 王巨丰 | Voltage-sharing type lightning-protection clearance device capable of deeply restraining power frequency, follow current and electric arcs |
| WO2014047758A1 (en) * | 2012-09-27 | 2014-04-03 | Wang Jufeng | No-freewheeling arc lightning protection gap protecting device |
| CN203826144U (en) * | 2013-11-13 | 2014-09-10 | 王巨丰 | Multi-gap self-expanding strong-airflow longitudinal-blowing arc-extinguishing lightning protection device |
| CN104701743A (en) * | 2015-02-10 | 2015-06-10 | 王巨丰 | Countable cut arc lightning arrester |
| CN106451078A (en) * | 2016-08-30 | 2017-02-22 | 王巨丰 | Electric arc compressed arc-extinguishing lightning protection gap device |
| CN106356162A (en) * | 2016-10-24 | 2017-01-25 | 王巨丰 | Arc extinguishing and lightning protection insulator |
| CN207217201U (en) * | 2017-08-24 | 2018-04-10 | 王巨丰 | A kind of separate assembling compresses arc-extinguishing tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107481822A (en) | 2017-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10355457B2 (en) | Arc compression-based arc-extinguishing lightning-protection gap device | |
| CN103594210B (en) | Multiple level self-expanding air blast is vertical blows out arc lightning protection device | |
| CN107742559B (en) | Zigzag synchronous compression arc extinguishing lightning protection device with parallel arrangement of arc extinguishing channels | |
| CN107578864B (en) | Zigzag synchronous compression arc extinguishing lightning protection device with four-side injection channels | |
| CN103730834B (en) | Jet-propelled parallel connection clearance device | |
| CN203787766U (en) | Composite jet stream lightning protection and arc extinguishing gap device | |
| CN107732663B (en) | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn | |
| CN211405000U (en) | Low-voltage system early-discharge recoil arc-extinguishing device | |
| CN107481822B (en) | Split combined type compression arc extinguishing pipe | |
| CN107732661B (en) | Zigzag synchronous compression arc extinguishing lightning protection device with protection side | |
| CN208336809U (en) | A kind of arc extinguishing lightning protection device of the big compression ratio in segmented air gap | |
| CN107732657A (en) | A kind of shirt rim provided with arc extinguishing path | |
| CN203826144U (en) | Multi-gap self-expanding strong-airflow longitudinal-blowing arc-extinguishing lightning protection device | |
| CN204360853U (en) | The insulator string that a kind of anti-graphite bomb destroys | |
| CN207217201U (en) | A kind of separate assembling compresses arc-extinguishing tube | |
| CN207218002U (en) | A kind of shirt rim provided with arc extinguishing path | |
| CN208970929U (en) | A kind of dish type Multiple level arc extinguishing lightning protection device of double hemisphere T-type ceramic discharge tubes | |
| CN207149329U (en) | A kind of tortuous synchronous compression arc extinguishing lightning protection device of parallel arrangement arc extinguishing passage | |
| CN207217200U (en) | A kind of tortuous synchronous compression arc extinguishing lightning protection device with four side injection channels | |
| CN109390846B (en) | Multi-channel selective compression arc extinguishing lightning arrester | |
| CN207149877U (en) | A kind of compression arc-extinguishing tube for being used to compress arc extinguishing lightning protection device | |
| CN206976098U (en) | A kind of arrester | |
| CN206041201U (en) | Electric arc compression arc extinguishing lightning protection gap device | |
| CN210325372U (en) | Recoil type compression arc extinguishing lightning protection device | |
| CN110570999A (en) | single-recoil arc-extinguishing device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |