CN107834357A - One kind series connection multi-chamber arc extinguishing lightning protection device - Google Patents
One kind series connection multi-chamber arc extinguishing lightning protection device Download PDFInfo
- Publication number
- CN107834357A CN107834357A CN201710972038.9A CN201710972038A CN107834357A CN 107834357 A CN107834357 A CN 107834357A CN 201710972038 A CN201710972038 A CN 201710972038A CN 107834357 A CN107834357 A CN 107834357A
- Authority
- CN
- China
- Prior art keywords
- arc extinguishing
- lightning protection
- extinguishing lightning
- chamber arc
- chamber
- 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.)
- Pending
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Classifications
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
- H01T4/20—Arrangements for improving potential distribution
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Abstract
The invention discloses one kind series connection multi-chamber arc extinguishing lightning protection device; including the fitting being connected with by protection circuit insulator bottom and the multi-chamber arc extinguishing lightning protection body supported by the fitting; it is described to be provided with penetrating cable clamp electrode at the top of protection circuit insulator, series connection main gap is provided between the penetrating cable clamp electrode and the multi-chamber arc extinguishing lightning protection body；The multi-chamber arc extinguishing lightning protection body both ends are respectively equipped with end metal fitting, and the multi-chamber arc extinguishing lightning protection body interior is provided with multiple built-in electrodes, a gas chamber is formed between per two neighboring built-in electrode, the built-in electrode that two of which is located at end distinguishes end metal fitting connection adjacent thereto.Compared with prior art, the present invention is applied to low cost, is adapted to high-volume large-scale production；Have the characteristics that manufacture craft is simple, cost is low, lightning protection performance is strong, operation maintenance is stable, and suitable for being widely popularized；Maintenance cost is extremely low after putting into operation, substantially belongs to non-maintaining.
Description
Technical field
The present invention relates to overvoltage protection technical field, and in particular to one kind series connection multi-chamber arc extinguishing lightning protection device,
Protected working for medium voltage distribution network lightning surge.
Background technology
When in thundercloud over the ground discharge process, the drastically change of discharge channel surrounding space electromagnetic field, nearby making somebody a mere figurehead
Induced overvoltage is produced on line.Thundercloud possibly even directly hits distribution overhead line, produces high lightning surge.Work as thunder
When electric overvoltage exceedes certain numerical value, it may result in the flashover of distribution line or even break, cause the destruction of supply network, this will
Directly affect the reliability of distribution system power supply.Therefore, it is necessary to which the lightning surge of centering press-fitting network system takes protection to arrange
Apply.At present, the lightning surge of medium voltage distribution network system takes safeguard procedures mainly to have two classes：Blocking type safeguard procedures can be divided into
Improve the thunder and lightning tolerance insulation characterisitic of distribution line, direct lightning strike is intercepted using aerial earth wire, the sensing reduced on wire is excessively electric
Pressure, and installation leakage conductor carry out clamper by the overvoltage at protection insulator both ends；Diverting type safeguard procedures general principle is
Electric arc is dredged, does not allow electric arc calcination wire.Including extending flashover path, being partially stripped insulated conductor, using portable protective gaps in parallel
（It is commonly called as arcing horn）Deng.The problem of above-mentioned safeguard procedures are present：Aerial earth wire still has larger thunderbolt accident probability,
And Meteorological is huge；It is a kind of very effective method to install Line type's MOA, but its installation complexity,
Operation expense is high；The core starting point for installing portable protective gaps in parallel is to improve the reclosing success rate after lightning fault, skill
Allow certain tripping rate with lightning strike in art, system be present because of automatic reclosing the defects of of short duration power-off.
The content of the invention
It is reasonable in design it is an object of the invention to provide one kind series connection multi-chamber arc extinguishing lightning protection device to solve drawbacks described above,
Installation is simple, and input and operation expense are relatively low, can effectively improve the reclosing success rate after lightning fault, ensures arrester
Normal operation.
To reach above-mentioned purpose, the present invention adopts the technical scheme that：One kind series connection multi-chamber arc extinguishing lightning protection device, including
The fitting being connected with by protection circuit insulator bottom and the multi-chamber arc extinguishing lightning protection sheet supported by the fitting
Body, it is described to be provided with penetrating cable clamp electrode, the penetrating cable clamp electrode and the multi-chamber arc extinguishing at the top of protection circuit insulator
Series connection main gap is provided between lightning protection body；The multi-chamber arc extinguishing lightning protection body both ends are respectively equipped with end metal fitting, and described
Multi-chamber arc extinguishing lightning protection body interior is provided with multiple built-in electrodes, and a gas chamber is formed between every two neighboring built-in electrode,
The built-in electrode that two of which is located at end distinguishes end metal fitting connection adjacent thereto；The built-in electrode is in the multi-cavity
Room arc extinguishing lightning protection device body interior is encapsulated by insulating barrier, wherein the built-in electrode and the gas chamber junction are naked
Dew, makes to form multiple air microgaps between each adjacent built-in electrode and is cascaded.
Preferably, the multi-chamber arc extinguishing lightning protection body interior is provided with insulating bar below the built-in electrode, described
Insulating bar both ends are connected with the end metal fitting respectively, and mechanical strength is provided for the multi-chamber arc extinguishing lightning protection body.
The air microgap quantity of the multi-chamber arc extinguishing lightning protection body interior is no less than 5, and the air microgap
Distance is 0.5mm~5mm.
The built-in electrode is set to spherical, cylindrical or dish type, is made of stainless steel, graphite, copper or wolfram steel material.
The built-in electrode uses spherical a diameter of 4mm~12mm.
The gas chamber is in cylinder or cuboid, and the gas chamber has single-ended opening, the single-ended opening
Located at the multi-chamber arc extinguishing lightning protection body surface.
The insulating barrier uses hot press moulding or injection technique sulfidization molding, uses high-temperature silicon disulfide rubber, liquid silicon rubber
Glue, polyethylene, polyvinyl chloride or nylon material are made.
The insulating bar is that glass fiber reinforced epoxy resin rod, glass fiber reinforcement unsaturated polyester rod or glass fibre increase
Strong nylon rod.
The insulating bar both ends connect or are threadedly coupled using crimping with the end metal fitting respectively.
The both ends gold utensil of the multi-chamber arc extinguishing lightning protection body uses cast steel, aluminium alloy or stainless steel material.
The present invention sets series connection main gap and multiple air microgaps respectively in the multi-chamber arc extinguishing lightning protection body, when
The present invention is arranged on distribution line and during with protected circuit insulator parallel running, and the voltage of distribution system is applied to series connection
On main gap and multiple air microgaps, because the equivalent capacitance amount of main gap is much smaller than built-in gap, system voltage master
Act on main gap, when the lightning surge that system is subjected to exceedes certain numerical value, gap（Including series connection main gap and sky
Gas microgap）Breakdown, power frequency continued flow will flow through gap（Flow successively through series connection main gap and air microgap）, electric arc will be built-in
Set up between electrode, electric arc is established initial stage, and length is shorter, and is burnt between built-in microgap, resulting high temperature
Cavity bottom gas can be made drastically to expand, air pressure increased dramatically；Because chamber is single-ended hatch frame, in the horizontal effect of blowing of hyperbar
Under, cool electric arc and electric arc is elongated to beyond built-in microgap, the impedance of arc road becomes big, and power frequency continued flow is half of power frequency week
Cut off in ripple by blow-out.In addition, during voltage zero-cross nearby there is " nearly cathode effect " in built-in microgap electrode, multi-chamber knot of connecting
Structure causes multiple nearly cathode effect superpositions, improves the ratio between dielectric insulation intensity resume speed and rate of voltage rise, more favorably
In suppression arc reignition.
The present invention is using main gap and the structure of multiple built-in microgap series connection, the system voltage that can be used according to device
The size of grade, increase or decrease the distance of series connection main gap and increase or decrease the number of multiple air microgaps, so that
Whole device adapts to the voltage class used.Such as prevent for the series connection multi-chamber arc extinguishing of China 10kV distribution overhead transmission lines
Thunder device：The distance of main gap is 50mm~60mm, and the number of built-in microgap is 40 or so（Single clearance distance 0.8mm
~1.2mm）.
The external insulation absolutely as series connection multi-chamber arc extinguishing lightning protection device body that the present invention uses, insulating barrier use material
（Such as silicon rubber）, can be with excellent insulating properties, weather-resistant performance, resistance to electric arc calcination performance and resistance to pollution performance
Protect the inner member of body.
The present invention uses built-in multiple gas chamber, and chamber is formed by insulating materials by hot press moulding or injection vulcanization
Shape, the chamber so designed can form good gas chamber's environment, effectively protect internal microgap and in-built electrical
Erosion and pollution of the pole from environment.
The present invention is based on magnetohydrodynamics principle, can be in half of power frequency using series connection multi-chamber gas blast arc-quenching technology
Cycle（10ms）Internal cutting off thunderbolt caused by power frequency continued flow and extinguish electric arc, limiting circuitry insulator both ends overvoltage level has
Protect middle voltage distribution networks circuit from Lightning disservice to effect.
Compared with prior art, the present invention is applied to low cost, is adapted to high-volume large-scale production；With manufacture craft letter
Singly, the features such as cost is low, lightning protection performance is strong, operation maintenance is stable, and suitable for being widely popularized；After putting into operation safeguard into
This is extremely low, substantially belongs to non-maintaining.
Brief description of the drawings
Below according to drawings and Examples, the structure and features of the present invention is further described.
Fig. 1 is the structural scheme of mechanism of the present invention.
Fig. 2 is the internal structure schematic diagram of heretofore described multi-chamber arc extinguishing lightning protection body.
Fig. 3 is the structural representation that two built-in electrodes are disposed adjacent in the present invention.
In accompanying drawing 1, Fig. 2 and Fig. 3,1. multi-chamber arc extinguishing lightning protection bodies, 2. penetrating cable clamp electrodes, 3. series connection main gaps, 4.
Fitting, 5. built-in electrodes, 6. chambers, 8. insulating barriers, 9. air microgaps.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the structure of the present invention is further described.
Embodiment：10kV distribution overhead lines series connection multi-chamber arc extinguishing lightning protection device.
Referring to Fig. 1, multi-chamber arc extinguishing lightning protection body 1, penetrating cable clamp electrode 2, connect main gap 3 and fitting 4, its
Middle series connection main gap（The air gap）Distance be 50mm ± 5mm, penetrating cable clamp electrode 2 is punctured by wire clamp and led with insulated aerial
The inside conductor of line is electrically connected, and multi-chamber arc extinguishing lightning protection body 1 is arranged on fitting 4, and fitting can be carried out
Adjustment, makes the main gap distance between multi-chamber arc extinguishing lightning protection body Top electrode and penetrating cable clamp electrode meet 50mm ± 5mm's
It is required that.
Shown in Fig. 2, multiple chambers 6 are set, often shape between adjacent two built-in electrodes 5 in multi-chamber arc extinguishing lightning protection body 1
Into a gas chamber 6,40 chambers are shared, gas chamber 6 is single-ended opening, has one in each gas chamber by built-in
The air microgap 9 that electrode 5 is formed, the distance g=0.8mm of air microgap 9~1.2mm；Built-in electrode 5 is led for resistance to electric burning
Electric material（Such as：Stainless steel, graphite, copper or wolfram steel）, diameter D=8mm~10mm of built-in electrode 5, multi-chamber arc extinguishing lightning protection body
1 is located at built-in electrode 5a, 5b of end, is electrically connected respectively with end metal fitting 7a, 7b.
As shown in Fig. 2 both ends connection gold utensil 7a, 7b of insulating bar 10, mechanical strength is provided for device 1.Insulating barrier 8 will insulate
Rod 10, built-in electrode 5 are packaged, and environmental protection and external insulation are provided for multi-chamber arc extinguishing lightning protection body apparatus 1.
The technical parameter of 10kV distribution overhead lines series connection multi-chamber arc extinguishing lightning protection device：
In the present embodiment, manufacture method of the present invention is simple, and the installation cost made is low, small volume is beneficial to transport.With
Traditional series gap metal oxide arrester compares, and device is using multi-chamber arc extinguishing technology without being aoxidized using metal
Thing non-linear resistor, make device performance more stability, the danger because absorbing the too high blast of energy less be present；The device
There is low cost, easy for installation, operation expense is low, be particularly adapted to large-scale promotion in power distribution network lightning protection should
With.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and unrestricted, the common skill in this area
Other modifications or equivalent substitution that art personnel are made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, it all should cover among scope of the presently claimed invention.
Claims (10)
1. one kind series connection multi-chamber arc extinguishing lightning protection device, it is characterised in that：Including what is be connected with by protection circuit insulator bottom
Fitting and the multi-chamber arc extinguishing lightning protection body supported by the fitting, it is described to be set at the top of protection circuit insulator
There is penetrating cable clamp electrode, series connection main gap is provided between the penetrating cable clamp electrode and the multi-chamber arc extinguishing lightning protection body；Institute
State multi-chamber arc extinguishing lightning protection body both ends and be respectively equipped with end metal fitting, and the multi-chamber arc extinguishing lightning protection body interior is provided with multiple
Built-in electrode, often forms a gas chamber between two neighboring built-in electrode, two of which is located at the built-in electrode difference of end
End metal fitting connection adjacent thereto；The built-in electrode passes through insulation in the multi-chamber arc extinguishing lightning protection device body interior
Layer encapsulation, wherein the built-in electrode and the gas chamber junction are exposed, make to be formed between each adjacent built-in electrode multiple
Air microgap is cascaded.
2. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The multi-chamber arc extinguishing lightning protection
Body interior is provided with insulating bar below the built-in electrode, and the insulating bar both ends are connected with the end metal fitting respectively, are
The multi-chamber arc extinguishing lightning protection body provides mechanical strength.
3. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The multi-chamber arc extinguishing lightning protection
The air microgap quantity of body interior is no less than 5, and air microgap distance is 0.5mm~5mm.
4. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The built-in electrode is set to ball
Shape, cylinder or dish type, it is made of stainless steel, graphite, copper or wolfram steel material.
5. series connection multi-chamber arc extinguishing lightning protection device according to claim 4, it is characterised in that：The built-in electrode uses ball
A diameter of 4mm~12mm of shape.
6. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The gas chamber is in cylinder
Shape or cuboid, and the gas chamber has single-ended opening, the single-ended opening is located at the multi-chamber arc extinguishing lightning protection body
Surface.
7. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The insulating barrier uses high temperature
Molding or injection technique sulfidization molding, use high-temperature silicon disulfide rubber, liquid silastic, polyethylene, polyvinyl chloride or nylon material
Material is made.
8. series connection multi-chamber arc extinguishing lightning protection device according to claim 2, it is characterised in that：The insulating bar is glass fibers
Tie up reinforced epoxy rod, glass fiber reinforcement unsaturated polyester rod or glass fibre reinforced nylon rod.
9. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The insulating bar both ends difference
Connect or be threadedly coupled using crimping with the end metal fitting.
10. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The multi-chamber arc extinguishing is prevented
The both ends gold utensil of thunder body uses cast steel, aluminium alloy or stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972038.9A CN107834357A (en) | 2017-10-18 | 2017-10-18 | One kind series connection multi-chamber arc extinguishing lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972038.9A CN107834357A (en) | 2017-10-18 | 2017-10-18 | One kind series connection multi-chamber arc extinguishing lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834357A true CN107834357A (en) | 2018-03-23 |
Family
ID=61648441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710972038.9A Pending CN107834357A (en) | 2017-10-18 | 2017-10-18 | One kind series connection multi-chamber arc extinguishing lightning protection device |
Country Status (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273987A (en) * | 2018-09-30 | 2019-01-25 | 武汉微创元电子科技有限责任公司 | Stick Multiple level arc extinguishing lightning protection device based on double hemisphere T-type ceramic discharge tubes |
| CN109834912A (en) * | 2019-02-15 | 2019-06-04 | 武汉水院电气有限责任公司 | For producing the mold needle of multi-chamber clearance lightning-proof device |
| CN110311297A (en) * | 2019-07-19 | 2019-10-08 | 郭润生 | A kind of close-coupled lightning protection arc extinguishing chamber unit structure and preparation method thereof |
| CN110416878A (en) * | 2019-07-19 | 2019-11-05 | 郭润生 | A kind of compact self extinguishing type gap arc extinguishing lightning protection device and preparation method thereof |
| WO2020215650A1 (en) * | 2019-04-22 | 2020-10-29 | 中国电力科学研究院有限公司 | Lightning arrester having external series gap and lightning protection system |
| CN112072472A (en) * | 2020-08-31 | 2020-12-11 | 广东电网有限责任公司 | Arc extinguishing lightning arrester |
| CN112117642A (en) * | 2019-06-20 | 2020-12-22 | 王嬿蕾 | Structure for multi-tube recoil extinguishing of arc plasma |
| CN113533912A (en) * | 2021-06-17 | 2021-10-22 | 云南电网有限责任公司德宏供电局 | Calculation method for positioning flashover path of multi-cavity structure |
| CN113745975A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Gap type lightning arrester |
| CN114825051A (en) * | 2022-03-25 | 2022-07-29 | 贵州电网有限责任公司 | 10kV joins in marriage net with quick arc extinguishing device of overlap formula multiple fracture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486954A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN103812007A (en) * | 2014-01-24 | 2014-05-21 | 广州供电局有限公司 | Band gap puffer type medium voltage lightning arrester for overhead distribution line |
| CN203722173U (en) * | 2014-01-25 | 2014-07-16 | 广州供电局有限公司 | Integrated serial-connection gap-adjustable arc-blowing distribution line lightning protection device |
| CN207530305U (en) * | 2017-10-18 | 2018-06-22 | 南阳金牛电气有限公司 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
-
2017
- 2017-10-18 CN CN201710972038.9A patent/CN107834357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486954A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN103812007A (en) * | 2014-01-24 | 2014-05-21 | 广州供电局有限公司 | Band gap puffer type medium voltage lightning arrester for overhead distribution line |
| CN203722173U (en) * | 2014-01-25 | 2014-07-16 | 广州供电局有限公司 | Integrated serial-connection gap-adjustable arc-blowing distribution line lightning protection device |
| CN207530305U (en) * | 2017-10-18 | 2018-06-22 | 南阳金牛电气有限公司 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273987A (en) * | 2018-09-30 | 2019-01-25 | 武汉微创元电子科技有限责任公司 | Stick Multiple level arc extinguishing lightning protection device based on double hemisphere T-type ceramic discharge tubes |
| CN109834912A (en) * | 2019-02-15 | 2019-06-04 | 武汉水院电气有限责任公司 | For producing the mold needle of multi-chamber clearance lightning-proof device |
| CN109834912B (en) * | 2019-02-15 | 2024-04-05 | 武汉水院电气有限责任公司 | Mould needle for producing multi-chamber gap lightning protection device |
| WO2020215650A1 (en) * | 2019-04-22 | 2020-10-29 | 中国电力科学研究院有限公司 | Lightning arrester having external series gap and lightning protection system |
| CN112117642A (en) * | 2019-06-20 | 2020-12-22 | 王嬿蕾 | Structure for multi-tube recoil extinguishing of arc plasma |
| CN112117642B (en) * | 2019-06-20 | 2023-04-25 | 王嬿蕾 | Structure for extinguishing arc plasma by multi-tube recoil |
| CN110416878A (en) * | 2019-07-19 | 2019-11-05 | 郭润生 | A kind of compact self extinguishing type gap arc extinguishing lightning protection device and preparation method thereof |
| CN110311297A (en) * | 2019-07-19 | 2019-10-08 | 郭润生 | A kind of close-coupled lightning protection arc extinguishing chamber unit structure and preparation method thereof |
| CN113745975A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Gap type lightning arrester |
| CN113745975B (en) * | 2020-05-28 | 2022-09-13 | 中国石油化工股份有限公司 | Gap type lightning arrester |
| CN112072472B (en) * | 2020-08-31 | 2022-01-25 | 广东电网有限责任公司 | Arc extinguishing lightning arrester |
| CN112072472A (en) * | 2020-08-31 | 2020-12-11 | 广东电网有限责任公司 | Arc extinguishing lightning arrester |
| CN113533912A (en) * | 2021-06-17 | 2021-10-22 | 云南电网有限责任公司德宏供电局 | Calculation method for positioning flashover path of multi-cavity structure |
| CN114825051A (en) * | 2022-03-25 | 2022-07-29 | 贵州电网有限责任公司 | 10kV joins in marriage net with quick arc extinguishing device of overlap formula multiple fracture |
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Application publication date: 20180323 |