CN105448438B - A kind of thermo bimetal is the lightning protection hardware of material - Google Patents
A kind of thermo bimetal is the lightning protection hardware of material Download PDFInfo
- Publication number
- CN105448438B CN105448438B CN201510782525.XA CN201510782525A CN105448438B CN 105448438 B CN105448438 B CN 105448438B CN 201510782525 A CN201510782525 A CN 201510782525A CN 105448438 B CN105448438 B CN 105448438B
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- Prior art keywords
- lightning protection
- earth plate
- protection hardware
- insulator
- arc
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- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000012212 insulator Substances 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 230000035515 penetration Effects 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001771 impaired effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 230000036632 reaction speed Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000012211 strain insulator Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 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
- 238000012360 testing method 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The present invention provides the lightning protection hardware that a kind of thermo bimetal is material, including：Starting rod and earth plate；Described starting rod one end is spherical arc end, and the other end is fixed on the point of puncture of penetration type insulator, and the outer end of the arc end of the starting rod and the earth plate is oppositely arranged, between leave discharging gap；The earth plate is divided into four sections, including linkage section, the initial segment, interlude and ending segment, and the interlude is made up of thermo bimetal, and the initial segment and ending segment are made up of low-resistance iron plate.This programme is simple to operate, and exploitativeness is strong, it is only necessary to which the earth plate of conventional lightning protection hardware is replaced by into thermo bimetal, convenient construction and maintenance.Thermo bimetal bends in the presence of electric arc, can play the effect of arcing.The duration of electric arc is reduced, the impaired of equipment is reduced.Prevent that electric arc existence time is long, cause peripheral equipment by a certain degree of infringement.
Description
Technical field
The invention belongs to the sub- lightning protection field of power system insulation, more particularly to a kind of thermo bimetal is the lightning protection of material
Gold utensil.
Background technology
The construction modernized with town and country, 10kv insulated circuit is increasingly widely applied.Insulated circuit can be with
Reduce accident rate, and electric energy loss.But the problem of lightning of insulated conductor is also on the rise, lightning-caused breaking and insulator dodge
The accident of network frequently occurs, and the reliability service and personal security of power network are constituted a threat to.When overhead transmission line is by thunderbolt,
Thunder and lightning circulation road is produced, occurs phase fault, electric arc is produced.If on bare conductor, electric arc can in the presence of electric power,
Moved on wire, heat is distributed.But for insulated conductor, due to the barrier of insulating coating, electric arc can not be moved,
Powerful electric current produces huge heat, blows wire.So the lightning-caused breaking problem especially severe of insulated conductor.Therefore, state
It is inside and outside all to prevent the lightning protection hardware that power frequency continued flow blows wire in research.
Existing most coordinated insulation of lightning protection hardware is installed, and discharging gap is fixed.Electric arc exists for a long time, causes electric arc
Huge infringement is produced to lightning protection hardware, the service life of lightning protection hardware has been shortened.
The content of the invention
To solve the deficiency that prior art is present, the invention discloses a kind of lightning protection hardware for adding thrermostatic bimetal-plate,
Using thermal bimetal material, there is provided the function of arcing for the distance in increase gap.With the fast arc extinction mode phase of traditional arc-chutes
Than lightning protection hardware of the invention both carried out heat release using electric arc, and the heat for making power frequency continued flow produce in the line, which will not blow, leads
Line；Further through short-range deformation, electric arc existence time is reduced, on the premise of heat fully discharges, lightning protection hardware is reduced
It is impaired.
To achieve the above object, concrete scheme of the invention is as follows：
A kind of thermo bimetal is the lightning protection hardware of material, including：Starting rod and earth plate；The interlude of the earth plate by
Thermo bimetal is made.
Described lightning protection hardware can be penetration type generally in the art or non-piercing type lightning protection hardware, and such as FHJ types are worn
Thorn formula arc-preventing metal utensil, FLC-B puncture type lightning protection hardwares, FLC-C puncture type lightning protection hardwares, CFHJ-70/240 types lightning protection hardware,
FHY5C type lightning protection hardwares etc., can select any suitable model, wherein, starting rod and earth plate are common according to this area
Structure and connected mode are set.
It is preferred that, the one end of the interlude away from insulator is to the sheet material between the one end of earth plate away from insulator by low
Resistance metal is made.
It is preferred that, the thermo bimetal is the lightning protection hardware of material, including：Starting rod and earth plate；The starting rod one
End is fixed on the point of puncture of penetration type insulator, and the other end is arc end, and the inner of the earth plate is arranged on insulator and horizontal stroke
Between load；Discharging gap is left between the outer end of the arc end and earth plate；The interlude of the earth plate is by thermo bimetal
It is made, the one end of the interlude away from insulator is to the sheet material between the one end of earth plate away from insulator by low resistance metal system
Into.
Wherein, the inner of the earth plate is that the outer end of the earth plate is away from insulator close to one end of insulator
One end.
" low-resistance " in the present invention refers to resistance less than 1 Ω.The main cross-sectional area by controlling metal material in the present invention
Realize.
Preferably, the barred body of the starting rod is arc, or is arc and linear compound shape.Wherein, arc
The starting rod of shape structure is applied to suspended isolator, and arc and linear compound shape are then applied to strain insulator.
Preferably, the all-in resistance of the earth plate is 0.6 ohms.Reality has been carried out to earth plate when experiment
Survey, resistance is about 0.6 or so.When experiment can obtain 0.6 ohm, the heat that thunder and lightning is produced almost is that thermo bimetal bears temperature
The limit of degree.Resistance becomes big, heat increase, may blow thermo bimetal.
Preferably, the thermo bimetal is model 5j20110.
Preferably, the point of puncture of the penetration type insulator is located at the upper end of insulator.
In multiple preferred embodiments of the present invention, the carry out of the thickness of earth plate is preferred, it is contemplated that resistance and the double gold of heat
Belong to two factors of reaction speed.Metal is thicker, and reaction speed will be slower.Too thin, resistance can become big, and metal bearing temperature also can
Step-down.It is preferred that ground connection plate thickness be 1.0-1.4mm.
Preferably, the low resistance metal be low-resistance iron plate, first, iron plate resistivity is low, is amenable to the production of thunder-strike current
Heat.Second, iron plate has enough intensity, and electric arc formation can produce very high temperature in that point on iron plate, can using iron plate
It is breakdown to prevent.
Preferably, the distance between starting rod and earth plate are 130mm-150mm, it is contemplated that the bending of thermo bimetal is special
Property.Distance can be suitably reduced, is 130mm or so.
In the preferred scheme of the present invention, the present invention includes penetration type insulator, be arranged on cross-section below insulator and
Thrermostatic bimetal-plate.Thrermostatic bimetal-plate is divided into two parts, and both sides are low-resistance iron plate, and centre is thermo bimetal, model 5j20110.
Iron plate is connected with thermo bimetal by the bolt of left and right ends.At room temperature, resistance is 0.6 ohm.Thermo bimetal is in iron plate
Lower section.
Beneficial effects of the present invention：
This programme is simple to operate, and exploitativeness is strong, it is only necessary to which the earth plate of conventional lightning protection hardware is replaced by into thermo bimetal
, convenient construction and maintenance.Thermo bimetal bends in the presence of electric arc, can play the effect of arcing.Reduce electric arc
Duration, reduce the impaired of equipment.Prevent that electric arc existence time is long, cause peripheral equipment by a certain degree of infringement.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
The three-view diagram of Fig. 2 thermo bimetals used in the present invention；
Wherein, 1 insulator, 2 insulated conductors, 3 striking metal balls, 4 wire-clamping devices, 5 cross-arms, 6 earth plates.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of thermo bimetal is the lightning protection hardware of material, including：Starting rod and earth plate 6；Described starting rod one end is fixed
In the point of puncture of penetration type insulator 1, the other end is arc end, one end of the earth plate be arranged on insulator 1 and cross-arm 5 it
Between；The other end of the arc end and the earth plate 6 is located at the homonymy of the insulator 1, and discharging gap is left therebetween；
The interlude of the earth plate 6 is made up of thermo bimetal, and the one end of the interlude away from insulator 1 to earth plate is away from insulation
Sheet material between one end of son 1 is made up of low resistance metal.
As shown in figure 1, when the present invention is struck by lightning for insulated conductor 2, reducing the arc duration, reduction equipment is damaged
Consumption.The lightning protection hardware includes line insulator 1, and the striking metal ball 3 drawn by point of puncture acts on the clamp of insulated conductor 2
Device 4, is arranged on the cross-arm 5 of the downside of insulator 1 and is arranged on by what thermo bimetal was constituted between insulator 1 and cross-arm 5
Earth plate 6.
The present invention is simple in construction, it is easy to change, it is only necessary to unload the earth plate of existing lightning protection hardware, the present invention is retouched
The thrermostatic bimetal-plate stated is connected between insulator and cross-arm, you can normally used, it is adaptable to polytype lightning protection hardware.It is convenient
Construction and safeguard, be conducive to the life of equipment.
Embodiment 2
It is with the difference of embodiment 1, there is a diameter of 2cm circular opening in left side, is connected to the He of insulator 1
Between cross-arm 5, for fixing thrermostatic bimetal-plate.As shown in Fig. 2 it is shown that the structure of thrermostatic bimetal-plate.The left and right sides is low
Iron plate is hindered, thickness is 1.2mm.Center section is thermo bimetal, and model 5j20110, length is 19cm, and thickness is 1.2mm.Iron
It is connected between piece and thermo bimetal by two bolts.Under the conditions of 23 DEG C, length is 25cm that a part of earth plate resistance
For 0.6 ohms.When occurring when being struck by lightning, discharged between striking metal ball 3 and earth plate 6, power frequency arc is moved to striking
Calcination in metal ball 3, so as to protect insulated conductor 2 injury-free.During calcination, thermo bimetal's heated bending, earth plate
It is bent downwardly, arcing effect is played in the increase of the distance between striking metal ball 3 and earth plate 6, and the arc duration shortens, subtracted
The damage of few lightning protection hardware.
Embodiment 3
It is with the difference of embodiment 1, the barred body of the starting rod is arc.Suitable for suspended isolator.
Embodiment 4
It is with the difference of embodiment 1, the barred body of the starting rod is arc and linear compound shape, is applicable
In strain insulator.
Embodiment 5
It is with the difference of embodiment 1, the arc end of the starting rod is spherical.
Embodiment 6
It is with the difference of embodiment 1, the all-in resistance of the earth plate is less than 0.6 ohm.To ground connection when testing
Plate is surveyed, and resistance is about 0.6 or so.When experiment can obtain 0.6 ohm, the heat that thunder and lightning is produced almost is hot double
The limit of metal bearing temperature.Resistance becomes big, heat increase, may blow thermo bimetal.
Embodiment 7
It is with the difference of embodiment 1, the low resistance metal is iron plate.
Embodiment 8
It is with the difference of embodiment 1, the point of puncture of the penetration type insulator is located at the upper end of insulator.
Embodiment 9
It is with the difference of embodiment 1, the thickness of the earth plate is 1.0-1.4mm.The thickness of earth plate enters
Row is preferred, it is contemplated that two factors of resistance and thermo bimetal's reaction speed.Metal is thicker, and reaction speed will be slower.It is too thin, electricity
Resistance can become big, and metal bearing temperature also can step-down.
Embodiment 10
It is with the difference of embodiment 1, the discharging gap between the arc end and earth plate is 130mm-
150mm。
Embodiment 11
It is with the difference of embodiment 1, the thickness of the earth plate is 1.0-1.4mm, and the low resistance metal is iron
Piece.In this area, after plate thickness determination is grounded, the material for generally docking floor end according to cross-sectional area is selected, but
Because the electric conductivity of various metals is different with machinability, it is necessary to carry out substantial amounts of screening experiment.Put in the present invention based on electric arc
The research of electricity and lightning protection hardware material property, proposes (to limit the resistance of end sheet material using metallic resistance characteristic as preferred factor
It is set to low-resistance), then by calculating the cross-sectional area of analysis acquisition different metal, greatly improve screening efficiency.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (7)
1. a kind of thermo bimetal is the lightning protection hardware of material, it is characterised in that including：Starting rod and earth plate；The earth plate
Interlude be made up of thermo bimetal；
The lightning protection hardware is arranged on high-tension line insulator；
The one end of the interlude away from insulator is made up to the sheet material between the one end of earth plate away from insulator of low resistance metal；
The low resistance metal is iron plate.
2. lightning protection hardware according to claim 1, it is characterised in that：The barred body of the starting rod is arc, or is arc
Shape and linear compound shape.
3. lightning protection hardware according to claim 1, it is characterised in that：The all-in resistance of the earth plate is less than 0.6 ohm.
4. lightning protection hardware according to claim 1, it is characterised in that：Described starting rod one end is fixed on penetration type insulator
Point of puncture, the other end is arc end；The inner of the earth plate is arranged between insulator and cross-arm.
5. lightning protection hardware according to claim 4, it is characterised in that：The point of puncture of the penetration type insulator is located at insulation
The upper end of son.
6. lightning protection hardware according to claim 1, it is characterised in that：The thickness of the earth plate is 1.0-1.4mm.
7. lightning protection hardware according to claim 4, it is characterised in that the discharging gap between the arc end and earth plate
For 130-150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510782525.XA CN105448438B (en) | 2015-11-13 | 2015-11-13 | A kind of thermo bimetal is the lightning protection hardware of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510782525.XA CN105448438B (en) | 2015-11-13 | 2015-11-13 | A kind of thermo bimetal is the lightning protection hardware of material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105448438A CN105448438A (en) | 2016-03-30 |
| CN105448438B true CN105448438B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510782525.XA Active CN105448438B (en) | 2015-11-13 | 2015-11-13 | A kind of thermo bimetal is the lightning protection hardware of material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105448438B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203982916U (en) * | 2014-07-05 | 2014-12-03 | 浙江天虹电气金具有限公司 | A kind of lightning rod type insulator |
| CN104361960A (en) * | 2014-12-02 | 2015-02-18 | 国家电网公司 | Parallel gap lightning protector with oscillating arm electrode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002352935A (en) * | 2001-05-29 | 2002-12-06 | Otowa Denki Kogyo Kk | Lighting resistance protective device |
-
2015
- 2015-11-13 CN CN201510782525.XA patent/CN105448438B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203982916U (en) * | 2014-07-05 | 2014-12-03 | 浙江天虹电气金具有限公司 | A kind of lightning rod type insulator |
| CN104361960A (en) * | 2014-12-02 | 2015-02-18 | 国家电网公司 | Parallel gap lightning protector with oscillating arm electrode |
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| Publication number | Publication date |
|---|---|
| CN105448438A (en) | 2016-03-30 |
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