CN107527695A - A kind of insulator for overhead transmission line - Google Patents
A kind of insulator for overhead transmission line Download PDFInfo
- Publication number
- CN107527695A CN107527695A CN201710759872.XA CN201710759872A CN107527695A CN 107527695 A CN107527695 A CN 107527695A CN 201710759872 A CN201710759872 A CN 201710759872A CN 107527695 A CN107527695 A CN 107527695A
- Authority
- CN
- China
- Prior art keywords
- contact rod
- transmission line
- overhead transmission
- insulator according
- cavity
- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention discloses a kind of insulator for overhead transmission line, including the insulation shell with cavity, upper contact rod and it is used for and upper contact rod forms the lower contact rod of discharging gap；Discharging gap is located in cavity.The present invention is placed in the upper contact rod of formation discharging gap and lower contact rod in the cavity of insulator, it is ensured that the cleaning of point of discharge, so as to ensure that the reliability of discharge prevention action, and reduces space-consuming.
Description
Technical field
The invention belongs to power overhead network technical field, and in particular to a kind of insulator for overhead transmission line.
Background technology
Overhead line can produce power frequency continued flow after being struck by lightning, so-called power frequency continued flow, be exactly overhead line after overhead line is struck by lightning
Thunder and lightning arc is just produced between metal cross arm, this thunder and lightning arc life span is very short, but it is formd between overhead line and cross-arm
Conductive channel, the power supply of overhead line is set to occur over the ground（Cross-arm）Short circuit, this short circuit current are referred to as power frequency continued flow（Be after lightning current it
Power current afterwards）, for power frequency continued flow, cross-arm or grounding of pole resistance are bigger, and power frequency continued flow is smaller, easier cutout.
Patent document CN201000796Y discloses a kind of lightning protection pillar insulator, is mainly closed by insulating shield, clamp aluminium
Gold utensil, composite insulator, starting rod and lower steel pin etc. form.Its main feature：（1）When thunderbolt occurs, starting rod and lower steel
Causing umbrella network to discharge between pin, form short-channel, the power frequency arc to continue, which is moved between starting rod and lower steel pin, to burn, with
Protect wire from burn.Because starting rod gets around full skirt and adjusts to optimal discharge gap, discharge effect is more preferable, and prevents from burning out
Insulator umbrella.But this kind of lightning protection pillar insulator still suffers from following weak point：Outside the point of discharge of starting rod and lower steel pin
Dew, easily accumulates dirt, influences discharging action.
The content of the invention
The present invention provides a kind of insulator for overhead transmission line built in discharging gap.
Realizing the technical scheme of the object of the invention is：
The present invention has advantages below：（1）The upper contact rod of formation discharging gap and lower contact rod are placed in the cavity of insulator
In, it is ensured that the cleaning of point of discharge, so as to ensure that the reliability of discharge prevention action, and reduce space-consuming.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the present invention；
Fig. 2 is a kind of half section structure diagram of insulator shown in Fig. 1.
Mark shown in accompanying drawing for：Insulation shell 1, cavity 11, metal cover 12, through hole 121, porcelain tripe 13, canopy 14, bleeder port
15, clamp gold utensil 2, upper contact rod 3, lower contact rod 4, installation portion 41, discharge block 5, block 51, screw 511, bulb 52 of discharging.
Embodiment
（Embodiment 1, lightning protection pillar insulator）
It is below in conjunction with accompanying drawing and specifically real to make the technical problem to be solved in the present invention, technical scheme and advantage clearer
Example is applied to be described in detail.
The present invention provides a kind of insulator for overhead transmission line, as depicted in figs. 1 and 2, including with the exhausted of cavity 11
Edge housing 1, be arranged on insulation shell top be used for and aerial cable electrical connection clamp gold utensil 2 and clamp gold utensil be electrically connected
The upper contact rod 3 that connects and it is used for and upper contact rod forms the lower contact rod 4 of discharging gap.
The bottom of upper contact rod and the top of lower contact rod are respectively provided with a discharge block 5, and two discharge blocks are located at respectively
The upper and lower part of the cavity, discharging gap are located at the middle part of cavity.
Discharge block includes the block 51 provided with screw 511 and at least one electric discharge bulb 52 to be formed is protruded above from block,
The present embodiment is provided with two electric discharge bulbs；The block of discharge block is connected through a screw thread the bottom that mode is fixedly installed on contact rod
On end or the top of lower contact rod.When thunderbolt occurs, thunder-strike current discharges between the electric discharge bulb of two discharge blocks.
The upper and lower ends of insulation shell are respectively provided with a metal cover 12, and each metal cover is fixedly installed on phase by rolling mode
On the one end answered；Through hole 121 is provided with the center of each metal cover, upper contact rod and lower contact rod are fixedly installed by welding manner
In a corresponding through hole.
Insulation shell is made of ceramics, and the middle part of insulation shell is provided with spherical porcelain tripe 13, and the top of porcelain tripe is provided with evagination
What is formed is used to block the canopy 14 of porcelain tripe, and the wall body of porcelain tripe is provided with the bleeder port 15 of a plurality of connection cavity；Work as thunder-strike current
During release, when gases are heated, they expand in cavity, is discharged from bleeder port.
Corresponding metal cover and clamp gold utensil electrical connection is stretched out in the upper end of upper contact rod upwards.
The lower end of lower contact rod extends downwardly from corresponding metal cover as the installation portion 41 being fixedly installed on cross-arm.
The upper contact rod and lower contact rod are located along the same line.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still falls within protection scope of the present invention.
Claims (10)
1. a kind of insulator for overhead transmission line, including the insulation shell with cavity, upper contact rod and be used for and on lead
Torch forms the lower contact rod of discharging gap；It is characterized in that：Discharging gap is located in cavity.
2. the insulator according to claim 1 for overhead transmission line, it is characterised in that：The discharge end of upper contact rod is located at
Cavity top, the discharging rod of lower contact rod are located at cavity bottom.
3. the insulator according to claim 2 for overhead transmission line, it is characterised in that：Led with the bottom of upper contact rod
The top of torch is respectively provided with a discharge block, and two discharge blocks are located at the upper and lower part of the cavity respectively, and this two put
Electric block clamping forms discharging gap.
4. the insulator according to claim 3 for overhead transmission line, it is characterised in that：Discharge block is included provided with screw
Block and at least one electric discharge bulb to be formed is protruded above from block.
5. the insulator according to claim 4 for overhead transmission line, it is characterised in that：The block of discharge block passes through screw thread
Connected mode is fixedly installed on the bottom of contact rod or the top of lower contact rod.
6. the insulator according to claim 5 for overhead transmission line, it is characterised in that：The upper and lower ends of insulation shell are each
Provided with a metal cover, each metal cover is fixedly installed on corresponding one end by rolling mode；Set at the center of each metal cover
There are through hole, upper contact rod and lower contact rod to be fixedly installed on by welding manner in a corresponding through hole.
7. the insulator according to claim 6 for overhead transmission line, it is characterised in that：Insulation shell is made using ceramics
Into the middle part of insulation shell is provided with spherical porcelain tripe, and the top of porcelain tripe is provided with the canopy for being used to block porcelain tripe that evagination is formed, porcelain tripe
Wall body be provided with it is a plurality of connection cavity bleeder port.
8. the insulator according to claim 7 for overhead transmission line, it is characterised in that：Insulation shell top, which is provided with, to be used
In the clamp gold utensil electrically connected with aerial cable, the upper end of upper contact rod is stretched out corresponding metal cover and clamp gold utensil and is electrically connected upwards
Connect.
9. the insulator according to claim 8 for overhead transmission line, it is characterised in that：Stretch downwards the lower end of lower contact rod
Go out corresponding metal cover as the installation portion being fixedly installed on cross-arm.
10. the insulator according to claim 9 for overhead transmission line, it is characterised in that：Upper contact rod and lower contact rod
It is located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710759872.XA CN107527695A (en) | 2017-08-26 | 2017-08-26 | A kind of insulator for overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710759872.XA CN107527695A (en) | 2017-08-26 | 2017-08-26 | A kind of insulator for overhead transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107527695A true CN107527695A (en) | 2017-12-29 |
Family
ID=60682745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710759872.XA Pending CN107527695A (en) | 2017-08-26 | 2017-08-26 | A kind of insulator for overhead transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107527695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584171A (en) * | 2020-05-22 | 2020-08-25 | 刘敏洁 | Composite cross arm insulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201185110Y (en) * | 2007-09-06 | 2009-01-21 | 固力发电气有限公司 | Puncture type lightning protection insulator |
| CN201576500U (en) * | 2009-08-04 | 2010-09-08 | 益和电气集团股份有限公司 | Basin-shaped air-permeable novel insulator |
| CN202019192U (en) * | 2011-04-01 | 2011-10-26 | 衢州日新电气有限公司 | Combined device with grounded middle point |
| CN206312664U (en) * | 2016-12-30 | 2017-07-07 | 中山市泰峰电气有限公司 | A kind of transformer disc insulator with many passages |
-
2017
- 2017-08-26 CN CN201710759872.XA patent/CN107527695A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201185110Y (en) * | 2007-09-06 | 2009-01-21 | 固力发电气有限公司 | Puncture type lightning protection insulator |
| CN201576500U (en) * | 2009-08-04 | 2010-09-08 | 益和电气集团股份有限公司 | Basin-shaped air-permeable novel insulator |
| CN202019192U (en) * | 2011-04-01 | 2011-10-26 | 衢州日新电气有限公司 | Combined device with grounded middle point |
| CN206312664U (en) * | 2016-12-30 | 2017-07-07 | 中山市泰峰电气有限公司 | A kind of transformer disc insulator with many passages |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584171A (en) * | 2020-05-22 | 2020-08-25 | 刘敏洁 | Composite cross arm insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171229 |