CN202978256U - Overvoltage protector - Google Patents
Overvoltage protector Download PDFInfo
- Publication number
- CN202978256U CN202978256U CN 201220648797 CN201220648797U CN202978256U CN 202978256 U CN202978256 U CN 202978256U CN 201220648797 CN201220648797 CN 201220648797 CN 201220648797 U CN201220648797 U CN 201220648797U CN 202978256 U CN202978256 U CN 202978256U
- Authority
- CN
- China
- Prior art keywords
- insulator
- transmission line
- power transmission
- lightning
- lightning arrester
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an overvoltage protector. The overvoltage protector comprises an insulator (2) whose upper end is fixed on a power transmission line (1), wherein the lower end of the insulator (2) is fixedly connected with the lower end of a lightning arrester (4) through a support (3), the upper end of the lightning arrester (4) is fixedly connected with one end of a drainage ring (5), and the other end of the drainage ring (5) is sleeved onto the upper portion of the insulator (2) in the shape of a split ring. According to the utility model, by installing the drainage ring between the lightning arrester and the insulator, the series gap formed between the drainage ring and the insulated power transmission line and current limiting elements can cooperate with each other, the power-flow current can be cut off effectively and instantaneously, so the occurrence of insulated power transmission line lightning-caused breaking accidents can be avoided, and the line switch tripping phenomenon caused by lightning strikes can be effectively reduced; and at the same time, characteristics of safe and reliable operation and maintenance-free can be realized, and even if the drainage ring is damaged in abnormal conditions, due to the isolation effect of the series gap, the insulation cooperating level of the power transmission line will not be affected, so the safe operation of an electric power system can be ensured.
Description
Technical field
The utility model relates to electrical network shocking preventing technology field, specifically a kind of overvoltage protection device.
Background technology
Thunder and lightning is a kind of weather phenomenon that often occurs summer, the huge threat of environment structure that the thunder calamity is depended on for existence to natural resources and the mankind.At first thunder and lightning produces scorching hot high temperature, also has in addition lightning induction, and lightning induction comprises electrostatic induction and electromagnetic induction, and it can produce the induction high voltage.Thunder and lightning generally is divided into three kinds for the mankind's harm: direct lightning strike, lightning wave are invaded and indirect lightning strike.Direct lightning strike refers to that thunder and lightning directly hits building, trees, the earth, lightning protection device or human body; Lightning wave is invaded and is referred to thunder and lightning to overhead transmission line and metal pipe line effect, and lightning wave may be invaded along these pipelines indoor, jeopardizes personal safety or damage equipment; Indirect lightning strike occurs silently, is difficult for discovering, and consequence is more serious, and direct stroke is different with the object that indirect lightning strike destroys, and direct lightning strike mainly break building, power transmission line on discharge path hit and extremely wound people and animals etc., respond to thunder and mainly destroy electronic equipment.Thunder and lightning also can cause forest fire, and the annual financial losses that cause are hundreds of millions of.Thunder and lightning can injure human life, and its that powerful electric current can make human heart and respiratory system pause and die.Thunder and lightning is also the one of the main reasons of power breakdown, because its that precipitate powerful electric power can be damaged the equipment such as transformer.
Along with the develop rapidly of power construction, insulated overhead line has become trend, and it has well solved tree line contradiction, and to the requirement of shelter of life safety, but the lightning-caused breaking accident is also soaring year by year simultaneously, seriously jeopardizes the safety of electrical production.
Summary of the invention
The purpose of this utility model is the defective for prior art, and a kind of safe and reliable to operation and non-maintaining overvoltage protection device is provided.
The purpose of this utility model solves by the following technical programs:
A kind of overvoltage protection device; comprise that the upper end is fixed on the insulator on power transmission line; the lower end that it is characterized in that described insulator is fixedly linked by the lower end of support and lightning arrester; one end of the upper end of lightning arrester and draining ring is fixedly linked, and the other end of draining ring is the top that the opening ring-type is set in insulator.
Be provided with the gap between the endless inner wall of described draining ring and the outer wall of insulator.
Described draining ring is horizontally set on the upper end of lightning arrester and is positioned at the below of power transmission line.
The junction, lower end of described support and insulator is provided with cross-arm, and cross-arm is positioned at the upside of the junction, lower end of support and insulator.
Described insulator is fixed on power transmission line by tension disc.
The utility model has the following advantages compared to existing technology:
The utility model is by installing draining ring between lightning arrester and insulator, make the series gap and the current limiting element that form between draining ring and insulation power transmission line to act synergistically, can effectively block power frequency continued flow in moment, the power transmission line lightning strikes broken string accident of avoiding insulating; And can effectively reduce the line switching tripping operation that causes because of thunderbolt.
The utility model is safe and reliable to operation, non-maintaining, even under abnormal conditions, draining ring damages, because the buffer action of series gap is arranged, also can not affect the insulation coordination level of transmission line, guarantees the security of operation of electric power system.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is structural representations of draining ring.
Wherein: 1-power transmission line; 2-insulator; 3-support; 4-lightning arrester; 5-draining ring; 6-cross-arm; 7-tension disc.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Fig. 1-2: a kind of overvoltage protection device; comprise that the upper end is fixed on the insulator 2 on power transmission line 1; insulator 2 is fixed on power transmission line 1 by tension disc 7; lower end in the lower end of insulator 2 by support 3 and lightning arrester 4 is fixedly linked; one end of the upper end of lightning arrester 4 and draining ring 5 is fixedly linked, and the other end of draining ring 5 is between the outer wall that the opening ring-type is set in the endless inner wall of the top of insulator 2 and draining ring 5 and insulator 2 and is provided with the gap.Above-mentioned draining ring 5 is horizontally set on the upper end of lightning arrester 4 and is positioned at the below of power transmission line 1, is provided with cross-arm 6 in the junction, lower end of support 3 and insulator 2 in addition, and cross-arm 6 is positioned at the upside of the junction, lower end of support 3 and insulator 2.
The utility model is by installing draining ring 5 between lightning arrester 4 and insulator 2, make the series gap and the current limiting element that form between the power transmission line 1 of draining ring 5 and insulation to act synergistically, can effectively block power frequency continued flow in moment, avoid the power transmission line 1 lightning strikes broken string accident that insulate, can effectively reduce the line switching tripping operation that causes because of thunderbolt; And have safe and reliable to operation, non-maintaining characteristics, even under abnormal conditions, draining ring 5 damages, because the buffer action of series gap is arranged, also can not affect the insulation coordination level of transmission line, guarantee the security of operation of electric power system.
Above embodiment only is explanation technological thought of the present utility model, can not limit protection range of the present utility model with this, every technological thought according to the utility model proposes, any change of doing on the technical scheme basis is within all falling into the utility model protection range; The technology that the utility model does not relate to all can be realized by prior art.
Claims (5)
1. overvoltage protection device; comprise that the upper end is fixed on the insulator (2) on power transmission line (1); the lower end that it is characterized in that described insulator (2) is fixedly linked by the lower end of support (3) and lightning arrester (4); one end of the upper end of lightning arrester (4) and draining ring (5) is fixedly linked, and the other end of draining ring (5) is the top that the opening ring-type is set in insulator (2).
2. overvoltage protection device according to claim 1 is characterized in that being provided with the gap between the outer wall of the endless inner wall of described draining ring (5) and insulator (2).
3. overvoltage protection device according to claim 1 and 2 is characterized in that described draining ring (5) is horizontally set on the upper end of lightning arrester (4) and is positioned at the below of power transmission line (1).
4. overvoltage protection device according to claim 1 and 2, is characterized in that described support (3) and the junction, lower end of insulator (2) are provided with cross-arm (6), and cross-arm (6) is positioned at the upside of the junction, lower end of support (3) and insulator (2).
5. overvoltage protection device according to claim 1 and 2, is characterized in that described insulator (2) is fixed on power transmission line (1) by tension disc (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648797 CN202978256U (en) | 2012-11-30 | 2012-11-30 | Overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648797 CN202978256U (en) | 2012-11-30 | 2012-11-30 | Overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978256U true CN202978256U (en) | 2013-06-05 |
Family
ID=48519283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648797 Expired - Lifetime CN202978256U (en) | 2012-11-30 | 2012-11-30 | Overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023006A (en) * | 2012-11-30 | 2013-04-03 | 江苏澳能电力电缆附件有限公司 | Overvoltage protection device |
-
2012
- 2012-11-30 CN CN 201220648797 patent/CN202978256U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023006A (en) * | 2012-11-30 | 2013-04-03 | 江苏澳能电力电缆附件有限公司 | Overvoltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |