CN207530305U - A kind of series connection multi-chamber arc extinguishing lightning protection device - Google Patents
A kind of series connection multi-chamber arc extinguishing lightning protection device Download PDFInfo
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- CN207530305U CN207530305U CN201721342713.1U CN201721342713U CN207530305U CN 207530305 U CN207530305 U CN 207530305U CN 201721342713 U CN201721342713 U CN 201721342713U CN 207530305 U CN207530305 U CN 207530305U
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- arc extinguishing
- lightning protection
- extinguishing lightning
- chamber arc
- chamber
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Abstract
The utility model discloses a kind of series connection multi-chamber arc extinguishing lightning protection devices; including the fitting being connect with by the sub- bottom of protection circuit isolation and the multi-chamber arc extinguishing lightning protection ontology supported by the fitting; it is described that penetrating cable clamp electrode is equipped with by protection circuit isolation top, series connection main gap is equipped between the penetrating cable clamp electrode and the multi-chamber arc extinguishing lightning protection ontology；The multi-chamber arc extinguishing lightning protection ontology both ends are respectively equipped with end metal fitting, and the multi-chamber arc extinguishing lightning protection body interior is equipped 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 utility model is suitable for low cost, is suitble to high-volume large-scale production；Have the characteristics that manufacture craft is simple, at low cost, lightning protection performance is strong, operation and maintenance are stablized, and suitable for being widely popularized；Maintenance cost is extremely low after putting into operation, substantially belongs to non-maintaining.
Description
Technical field
The utility model is related to overvoltage protection technical fields, and in particular to a kind of series connection multi-chamber arc extinguishing lightning protection dress
It puts, for the protected working of medium voltage distribution network lightning surge.
Background technology
When in thundercloud over the ground discharge process, the change dramatically of discharge channel surrounding space electromagnetic field can be maked somebody a mere figurehead nearby
Induced overvoltage is generated on line.Thundercloud possibly even directly hits distribution overhead line, generates high lightning surge.Work as thunder
When electric overvoltage is more than certain numerical value, the flashover that may result in distribution line even breaks, and causes the destruction of supply network, this will
Directly affect the reliability of distribution system power supply.Lightning surge therefore, it is necessary to centering press-fitting network system takes protection to arrange
It applies.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 conducting wire is excessively electric
Pressure and installation leakage conductor carry out clamper by the overvoltage at protection insulator both ends；Diverting type safeguard procedures basic principle is
Electric arc is dredged, does not allow electric arc calcination conducting wire.Including extending flashover path, being partially stripped insulated conductor, using portable protective gaps in parallel
（It is commonly called as arcing horn）Deng.Above-mentioned safeguard procedures there are the problem of：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 of installation portable protective gaps in parallel is the reclosing success rate improved after lightning fault, skill
Allow certain tripping rate with lightning strike in art, there are systems when the automatic reclosing the defects of of short duration power-off.
Utility model content
To solve drawbacks described above, the purpose of this utility model is to provide a kind of series connection multi-chamber arc extinguishing lightning protection device, design
Rationally, installation is simple, and input and operation expense are relatively low, can effectively improve the reclosing success rate after lightning fault, ensures
The normal operation of arrester.
In order to achieve the above objectives, the technical scheme adopted by the utility model is that：A kind of series connection multi-chamber arc extinguishing lightning protection device,
Prevent including the fitting being connect with by the sub- bottom of protection circuit isolation and the multi-chamber arc extinguishing supported by the fitting
Thunder ontology, it is described that penetrating cable clamp electrode, the penetrating cable clamp electrode and the multi-chamber are equipped with by protection circuit isolation top
Series connection main gap is equipped between arc extinguishing lightning protection ontology；The multi-chamber arc extinguishing lightning protection ontology both ends are respectively equipped with end metal fitting, and
The multi-chamber arc extinguishing lightning protection body interior is equipped with multiple built-in electrodes, and an air chamber is formed between every two neighboring built-in electrode
Room, the built-in electrode that two of which is located at end distinguish end metal fitting connection adjacent thereto；The built-in electrode is described
Multi-chamber arc extinguishing lightning protection device body interior is encapsulated by insulating layer, wherein the built-in electrode and the gas chamber junction
It is exposed, make to form multiple air microgaps between each adjacent built-in electrode and be cascaded.
Preferably, the multi-chamber arc extinguishing lightning protection body interior is equipped with insulating bar below the built-in electrode, described
Insulating bar both ends are connect respectively with the end metal fitting, and mechanical strength is provided for the multi-chamber arc extinguishing lightning protection ontology.
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 as spherical, cylindrical or dish type, is made of stainless steel, graphite, copper or wolfram steel material.
The built-in electrode is using spherical a diameter of 4mm~12mm.
The gas chamber is cylinder or cuboid, and the gas chamber has single-ended opening, the single-ended opening
Set on the multi-chamber arc extinguishing lightning protection body surface.
The insulating layer 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 glass fiber reinforced epoxy resin stick, glass fiber reinforcement unsaturated polyester stick or glass fibers
Dimension enhancing 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 ontology uses cast steel, aluminium alloy or stainless steel material.
Between the utility model sets series connection main gap and multiple air micro- respectively in the multi-chamber arc extinguishing lightning protection ontology
Gap, when the utility model is mounted on distribution line and during with protected circuit insulator parallel running, the voltage of distribution system
It is applied on series connection main gap and multiple air microgaps, because the equivalent capacitance amount of main gap is much smaller than built-in gap,
System voltage is acted predominantly on main gap, when the lightning surge that system is subjected to is more than certain numerical value, gap（Including series connection
Main gap and air microgap）Breakdown, power frequency continued flow will flow through gap（Flow successively through series connection main gap and air microgap）, electricity
Arc will be set up between built-in electrode, and electric arc is established initial stage, and length is shorter, and be burnt between built-in microgap, thus
The high temperature of generation can be such that cavity bottom gas drastically expands, and air pressure increased dramatically；Since chamber is single-ended hatch frame, in high gas
Press it is horizontal blow under effect, cool electric arc and electric arc be elongated to other than built-in microgap, the impedance of arc road becomes larger, and power frequency continued flow exists
It is cut off in half of frequency cycle by blow-out.In addition, during voltage zero-cross nearby there is " nearly cathode effect " in built-in microgap electrode, string
Connection multi-chamber structure causes multiple nearly cathode effects superpositions, improve dielectric insulation intensity resume speed and rate of voltage rise it
Than being more advantageous to inhibiting arc reignition.
The utility model is using main gap and the structure of multiple built-in microgap series connection, the system that can be used according to device
The size of voltage class increases or decreases the distance of series connection main gap and increases or decreases the number of multiple air microgaps,
So that the voltage class that whole device adaptation uses.Such as the series connection multi-chamber for China 10kV distribution overhead transmission lines goes out
Arc lightning protection 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 ontology that the utility model uses, insulating layer use material
Material（Such as silicon rubber）It, can with excellent insulation performance, weather-resistant performance, resistance to electric arc calcination performance and resistance to pollution performance
To protect the internal element of ontology.
The utility model uses built-in multiple gas chamber, and chamber is vulcanized by insulating materials by hot press moulding or injection
And shape, the chamber designed in this way can form good gas chamber's environment, effectively protect internal microgap and interior
Put erosion and pollution of the electrode from environment.
The utility model is based on magnetohydrodynamics principle, can be at half using series connection multi-chamber gas blast arc-quenching technology
Frequency cycle（10ms）Internal cutting off be struck by lightning caused by power frequency continued flow and extinguish electric arc, limiting circuitry insulator both ends overvoltage water
It is flat, effectively protect middle voltage distribution networks circuit from Lightning disservice.
Compared with prior art, the utility model is suitable for low cost, is suitble to high-volume large-scale production；With making work
The features such as skill is simple, at low cost, lightning protection performance is strong, operation and maintenance are stablized, and suitable for being widely popularized；It is tieed up after putting into operation
It is extremely low to protect cost, substantially belongs to non-maintaining.
Description of the drawings
Below according to accompanying drawings and embodiments, the structure and features of the utility model is further described.
Fig. 1 is the structural scheme of mechanism of the utility model.
Fig. 2 is the internal structure schematic diagram of the lightning protection ontology of multi-chamber arc extinguishing described in the utility model.
Fig. 3 is the structure diagram that two built-in electrodes are disposed adjacent in the utility model.
In attached drawing 1, Fig. 2 and Fig. 3,1. multi-chamber arc extinguishing lightning protection ontologies, 2. penetrating cable clamp electrodes, 3. series connection main gaps, 4.
Fitting, 5. built-in electrodes, 6. chambers, 8. insulating layers, 9. air microgaps.
Specific embodiment
With reference to the accompanying drawings and embodiments, the structure of the utility model 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 ontology 1, penetrating cable clamp electrode 2, connect main gap 3 and fitting 4,
Middle series connection main gap（The air gap）Distance for 50mm ± 5mm, penetrating cable clamp electrode 2 is punctured by wire clamp and is led with insulated aerial
The inside conductor of line is electrically connected, and multi-chamber arc extinguishing lightning protection ontology 1 is mounted on fitting 4, and fitting can carry out
Adjustment, makes the main gap distance between multi-chamber arc extinguishing lightning protection ontology 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 ontology 1
Into a gas chamber 6,40 chambers are shared, gas chamber 6 is single-ended opening, by built-in there are one tools in each gas chamber
The air microgap 9 that electrode 5 is formed, 9 distance g=0.8mm of air microgap~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 ontology
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, 10 both ends connection gold utensil 7a, 7b of insulating bar, mechanical strength is provided for device 1.Insulating layer 8 will insulate
Stick 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, the utility model manufacturing method is simple, and the installation cost made is low, small is conducive to
Transport.Compared with traditional series gap metal oxide arrester, device is using multi-chamber arc extinguishing technology without using
Metal oxide varistors piece makes device performance more stability, less there is the danger because absorbing the excessively high explosion of energy
Danger；The device has the characteristics that low cost, easy for installation, operation expense is low, is particularly suitble to advise greatly in power distribution network lightning protection
Mould promotes and applies.
It should be noted that above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field is general
Other modifications or equivalent replacement that logical technical staff makes the technical solution of the utility model, without departing from this practicality newly
The spirit and scope of type technical solution should all cover in the right of the utility model.
Claims (10)
1. a kind of series connection multi-chamber arc extinguishing lightning protection device, it is characterised in that：Including what is connect with by the sub- bottom of protection circuit isolation
Fitting and the multi-chamber arc extinguishing lightning protection ontology supported by the fitting, it is described to be set by protection circuit isolation top
There is penetrating cable clamp electrode, series connection main gap is equipped between the penetrating cable clamp electrode and the multi-chamber arc extinguishing lightning protection ontology；Institute
It states multi-chamber arc extinguishing lightning protection ontology both ends and is respectively equipped with end metal fitting, and the multi-chamber arc extinguishing lightning protection body interior is equipped 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, makes 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 equipped with insulating bar below the built-in electrode, and the insulating bar both ends are connect respectively with the end metal fitting, are
The multi-chamber arc extinguishing lightning protection ontology 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 as ball
Shape, cylinder or dish type are 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 set on the multi-chamber arc extinguishing lightning protection ontology
Surface.
7. series connection multi-chamber arc extinguishing lightning protection device according to claim 1, it is characterised in that：The insulating layer 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 stick, glass fiber reinforcement unsaturated polyester stick or glass fibre reinforced nylon stick.
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
It connects or is 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 ontology uses cast steel, aluminium alloy or stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342713.1U CN207530305U (en) | 2017-10-18 | 2017-10-18 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721342713.1U CN207530305U (en) | 2017-10-18 | 2017-10-18 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207530305U true CN207530305U (en) | 2018-06-22 |
Family
ID=62569843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721342713.1U Active CN207530305U (en) | 2017-10-18 | 2017-10-18 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
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| Country | Link |
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| CN (1) | CN207530305U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834357A (en) * | 2017-10-18 | 2018-03-23 | 南阳金牛电气有限公司 | One kind series connection multi-chamber arc extinguishing lightning protection device |
| CN109638650A (en) * | 2018-11-28 | 2019-04-16 | 国家电网有限公司 | One kind being based on multi-chamber line thunder protection device |
| CN111145968A (en) * | 2018-11-02 | 2020-05-12 | 西美雷电气有限公司 | Post insulator with bent multi-chamber lightning arrester and fixed air gap |
-
2017
- 2017-10-18 CN CN201721342713.1U patent/CN207530305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834357A (en) * | 2017-10-18 | 2018-03-23 | 南阳金牛电气有限公司 | One kind series connection multi-chamber arc extinguishing lightning protection device |
| CN111145968A (en) * | 2018-11-02 | 2020-05-12 | 西美雷电气有限公司 | Post insulator with bent multi-chamber lightning arrester and fixed air gap |
| CN109638650A (en) * | 2018-11-28 | 2019-04-16 | 国家电网有限公司 | One kind being based on multi-chamber line thunder protection device |
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