CN206564448U - The ground line side pin and ground wire of anti-ice-flashing broken string - Google Patents
The ground line side pin and ground wire of anti-ice-flashing broken string Download PDFInfo
- Publication number
- CN206564448U CN206564448U CN201720322061.9U CN201720322061U CN206564448U CN 206564448 U CN206564448 U CN 206564448U CN 201720322061 U CN201720322061 U CN 201720322061U CN 206564448 U CN206564448 U CN 206564448U
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- Prior art keywords
- ground wire
- ice
- needle body
- flashing
- side pin
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- 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.)
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 238000013508 migration Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model provides the ground line side pin and ground wire that a kind of anti-ice-flashing breaks.The ground line side pin of the anti-ice-flashing broken string includes：Clamp and needle body；The clamp is annular, medial surface and lateral surface with annular, the grasping part of the medial surface formation clamping ground wire；The needle body is soldered on the lateral surface of clamp with the direction of the lateral surface perpendicular to clamp, and the length of the needle body is the width of needle body or more than 5 times of height, and the clamp and needle body are stainless steel.The ground line side pin of the anti-ice-flashing broken string is arranged with the ground wire.The utility model is by installing the ground line side pin that a kind of anti-ice-flashing breaks on ground wire surface, ground wire exceedes margin of safety because sag changes with separation in the case of icing, air insulation is caused to puncture generation flashover and when there is electric arc, tip by needle body by electric arc from ground wire surface migration to needle body, so as to avoid arc erosion ground wire, prevent ground wire from fusing.
Description
Technical field
The utility model is related to power domain, and in particular to a kind of the ground line side pin and ground wire of anti-ice-flashing broken string, for preventing
Only ground wire fuses under the conditions of icing.
Background technology
Under the conditions of icing, ground wire is easily broken off or even occurs to trigger the accident of falling tower.For example, in late November, 2015 to December
Just, North China's air impact that is cooled starts a wide range of snowfall, and 5 to 15 centimetres of snow depth, mountain area are up to 50 centimetres, and temperature is rapid
More than 10 degrees Celsius of drop.Tripping fault occurs altogether for 500 KV transmission lines of State Grid Jibei Electric Power Co., Ltd.'s O＆M 25 times, its
In 3 times be that early stage ice trouble causes earth wire support to damage deformation, cause ground wire sag to change, caused under wind-force effect between ground wire
Electric discharge；20 times predominantly ground wire icing causes the distance between ground wire significantly to reduce, and discharges with causing phase, which part electric discharge
Further result in ground wire (OPGW) disconnection fault.Statistical analysis, the power network such as Hebei, Shanxi is in this sleet and snow ice weather
Line condition is similar with Ji north, Liaoning electric power grid even occurrence of large-area power outage.This North China ice damage is related to ground wire
Failure.
In summary, there is problems with the prior art：Under the conditions of icing, when the distance between ground wire significantly reduces
When generation mutually is discharged, ground wire is easily broken off.
Utility model content
The utility model provides a kind of ground line side pin of anti-ice-flashing broken string, so that under the conditions of solving icing, ground wire is easily broken off
The problem of.
Therefore, the utility model proposes a kind of ground line side pin of anti-ice-flashing broken string, the ground line side pin of the anti-ice-flashing broken string
Including：Clamp and needle body；
The clamp is annular, medial surface and lateral surface with annular, the clamping of the medial surface formation clamping ground wire
Space；
The needle body is soldered on the lateral surface of clamp with the direction of the lateral surface perpendicular to clamp, the length of the needle body
More than 5 times of width or height for needle body.
The clamp and needle body are stainless steel.
Further, the needle body has hemispheric tip.
Further, the length of the needle body is 5 to 10cm.
Further, the clamp is annular.
Further, the number of the needle body is two, and two needle bodies are located on straight line, and pass through the folder
The diameter of hoop.
Further, the number of the needle body is three, and three needle bodies intersect 120 degree of angles two-by-two.
Further, the number of the needle body is four, and the two neighboring needle body intersects an angle of 90 degrees.
Further, the cross section of the needle body is circle.
The utility model also proposes to be arranged with the ground line side pin of anti-ice-flashing broken string on a kind of ground wire, the ground wire.
Further, the ground wire installs an anti-ice-flashing broken string in one span of transmission line of electricity every 5-10m
Ground line side pin.
The utility model is by installing the ground line side pin that a kind of anti-ice-flashing breaks, the ground wire in the case of icing on ground wire surface
Because sag change and separation exceed margin of safety, cause air insulation to puncture generation flashover and when there is electric arc, lead to
Tip of the needle body by electric arc from ground wire surface migration to needle body is crossed, so as to avoid arc erosion ground wire, prevents ground wire from fusing.
Brief description of the drawings
The main structure diagram for the ground line side pin that Fig. 1 breaks for the anti-ice-flashing of the utility model first embodiment；
The main structure diagram for the ground line side pin that Fig. 2 breaks for the anti-ice-flashing of the utility model second embodiment；
The main structure diagram for the ground line side pin that Fig. 3 breaks for the anti-ice-flashing of the utility model 3rd embodiment；
Fig. 4 is the structural representation of the clamp of the utility model embodiment；
The present invention looks up structural representation for the ground line side pin that Fig. 5 breaks for the anti-ice-flashing of the utility model second embodiment.
Drawing reference numeral explanation：
1st, the tip of 3 ground wire of clamp, 5 needle body 51
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, now control is illustrated
The utility model.
Show through researching and analysing：This North China's ground wire icing situation is met to be difficult for many years, more serious than former years, but compares 05
Central China ice damage in year, 08 year is light, and the increased mechanical load of icing institute e insufficient to directly result in ground thread breakage, but can cause ground wire
The change of sag, can also cause earth wire support, ground insulator deformation, skew, so that cause ground line skew, and in low temperature bar
The tension force that ground wire is born under part also will increase；Wire discharges with significantly shortening generation phase with ground wire spacing, causes high arc temperature
Melted part ground wire, and cause the bulk temperature of ground wire to rise, mechanical strength entire lowering, ultimately cause ground thread breakage even
Occurs the accident of falling tower.
Ground wire will exceed margin of safety because sag changes with separation, cause air insulation to puncture generation flashover,
There is arc erosion wire and ground wire.Electric arc is up to thousands of to 10,000 celsius temperatures so that galvanized strand wires metal temperature liter
Height, surface melting formation molten condition pattern, the fusing of part ground wire, causing the bulk strength of per share wire reduces.Meanwhile, with
Temperature rise steel strand wires mechanical damage characteristic is remarkably decreased, and ice gravitational load causes ground line tension increase, unblown wire in addition
It is plastically deformed and is broken under generation tensile stress state, so as to causes ground wire to break.
The weak link of transmission line of electricity is ground wire in the case of icing, and the utility model is a kind of anti-by being installed on ground wire surface
The side pin of ice flash line, solve well after powerline ice-covering lead, discharge between ground wire after occur the problem of ground wire breaks.
On the basis of above-mentioned analysis, the utility model proposes a kind of ground line side pin of anti-ice-flashing broken string, the anti-ice-flashing
The ground line side pin of broken string includes：Clamp 1 and needle body 5；
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the clamp 1 is annular, for clamping ground wire 3, the medial surface with annular
And lateral surface, the grasping part of the medial surface formation clamping ground wire 3；Clamp 1 is the shaped article that in the market is commonly used；
As shown in Figure 2 and Figure 5, the needle body 5 is soldered to the lateral surface of clamp with the direction perpendicular to the lateral surface of clamp 1
On, the length of the needle body 5 is the width of needle body or more than 5 times of height.The clamp and needle body are stainless steel, whole
Weight is, for example, 200-300 grams.Needle body 5 is slender body, when ground wire and the not enough generation of phase conductor distance under the conditions of icing
During electric discharge, so as to avoid arc erosion ground wire, it can prevent ground by electric arc from ground wire surface migration to the tip of needle body 5 or tip
Line fuses.
Further, the needle body 5 has hemispheric sophisticated 51, excessive sharp to prevent.
Further, the length of the needle body is 5 to 10cm, it may have comparatively ideal arcing distance and suitable protection are made
With.
Further, the clamp 1 is annular, to make.Clamp 1 can be opened, and laid ground wire, then locked again
Tightly.Clamp can be divided into two kinds according to the actual requirements, and one kind is that clamp length can be adjusted, and can be carried out according to the specification of different ground wires
Change；Another clamp is regular length, is directly processed into according to the required size for installing ground wire additional.The clamp of two kinds of forms
It is fixed by screws in ground wire surface.
Further, as shown in figure 1, the number of the needle body 5 is two, two needle bodies 5 are located on straight line,
And the diameter Jing Guo the clamp 1, to implement to protect from both direction.
Further, as shown in Fig. 2 the number of the needle body 5 is three, three needle bodies intersect 120 degree two-by-two
Angle, to implement to protect from three directions.
Further, as shown in figure 3, the number of the needle body 5 is four, the two neighboring needle body intersects 90 degree
Angle, to implement to protect from four direction.
Further, the cross section of the needle body 5 is circle, to make and isotropism.
The utility model also proposes to be arranged with the ground line side pin of anti-ice-flashing broken string on a kind of ground wire, the ground wire.This band
The ground wire for having the ground line side pin that anti-ice-flashing breaks solve well after powerline ice-covering lead, discharge between ground wire after occur ground wire
The problem of broken string.
Further, the ground wire installs an anti-ice-flashing broken string in one span of transmission line of electricity every 5-10m
Ground line side pin.In such manner, it is possible to substantially ensure each section of safety of the transmission line of electricity of long range.
The utility model by installing the side pin that a kind of anti-ice-flashing breaks on ground wire surface, in the case of icing ground wire due to
Sag changes exceedes margin of safety with separation, causes air insulation to puncture generation flashover and when there is electric arc, passes through side
Electric arc from ground wire surface migration to side needle tip, so as to avoid arc erosion ground wire, is prevented ground wire from fusing by pin.
The weak link of transmission line of electricity is ground wire in the case of icing, and the utility model is a kind of anti-by being installed on ground wire surface
The side pin of ice flash line, solve well after powerline ice-covering lead, discharge between ground wire after occur the problem of ground wire breaks.
The schematical embodiment of the utility model is the foregoing is only, model of the present utility model is not limited to
Enclose.It can be mutually combined under conditions of not conflicting for each part of the present utility model, any those skilled in the art,
Made equivalent variations and modification, all should belong to this practicality new on the premise of design of the present utility model and principle is not departed from
The scope of type protection.
Claims (10)
1. a kind of ground line side pin of anti-ice-flashing broken string, it is characterised in that the ground line side pin of the anti-ice-flashing broken string includes：Clamp and
Needle body；
The clamp is annular, medial surface and lateral surface with annular, the grasping part of the medial surface formation clamping ground wire；
The needle body is soldered on the lateral surface of clamp with the direction of the lateral surface perpendicular to clamp, and the length of the needle body is pin
The width of body or more than the 5 of height times；
The clamp and needle body are stainless steel.
2. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the needle body has hemispheric point
End.
3. the ground line side pin of anti-ice-flashing as claimed in claim 1 broken string, it is characterised in that the length of the needle body be 5 to
10cm。
4. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the clamp is annular.
5. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the number of the needle body is two,
Two needle bodies are located on straight line, and the diameter Jing Guo the clamp.
6. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the number of the needle body is three,
Three needle bodies intersect 120 degree of angles two-by-two.
7. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the number of the needle body is four,
The two neighboring needle body intersects an angle of 90 degrees.
8. the ground line side pin of anti-ice-flashing broken string as claimed in claim 1, it is characterised in that the cross section of the needle body is circle
Shape.
9. a kind of ground wire, it is characterised in that be arranged on the ground wire just like the anti-icing flash described in any one of claim 1 to 8
The ground line side pin of line.
10. ground wire as claimed in claim 9, it is characterised in that the ground wire is in one span of transmission line of electricity every 5-10m
The ground line side pin of one anti-ice-flashing broken string is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322061.9U CN206564448U (en) | 2017-03-29 | 2017-03-29 | The ground line side pin and ground wire of anti-ice-flashing broken string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322061.9U CN206564448U (en) | 2017-03-29 | 2017-03-29 | The ground line side pin and ground wire of anti-ice-flashing broken string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564448U true CN206564448U (en) | 2017-10-17 |
Family
ID=60032691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720322061.9U Withdrawn - After Issue CN206564448U (en) | 2017-03-29 | 2017-03-29 | The ground line side pin and ground wire of anti-ice-flashing broken string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206564448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898989A (en) * | 2017-03-29 | 2017-06-27 | 华北电力科学研究院有限责任公司 | The ground line side pin and ground wire of anti-ice-flashing broken string |
| CN110889542A (en) * | 2019-11-19 | 2020-03-17 | 国网电力科学研究院武汉南瑞有限责任公司 | Dynamic prediction method for electrical safety distance of crossing of conducting wires and ground wires of power transmission line |
-
2017
- 2017-03-29 CN CN201720322061.9U patent/CN206564448U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898989A (en) * | 2017-03-29 | 2017-06-27 | 华北电力科学研究院有限责任公司 | The ground line side pin and ground wire of anti-ice-flashing broken string |
| CN110889542A (en) * | 2019-11-19 | 2020-03-17 | 国网电力科学研究院武汉南瑞有限责任公司 | Dynamic prediction method for electrical safety distance of crossing of conducting wires and ground wires of power transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171017 Effective date of abandoning: 20190125 |