CN202042294U - Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device - Google Patents
Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device Download PDFInfo
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- CN202042294U CN202042294U CN2010206376951U CN201020637695U CN202042294U CN 202042294 U CN202042294 U CN 202042294U CN 2010206376951 U CN2010206376951 U CN 2010206376951U CN 201020637695 U CN201020637695 U CN 201020637695U CN 202042294 U CN202042294 U CN 202042294U
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Abstract
The utility model relates to a lightning-protection protecting device, in particular to a multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device which is used for transmission lines of various voltage classes. The multi-gap self-expansion strong air-blast arc extinction lightning-protection protecting device is parallelly arranged on one side of a line insulator chain, and insulation strength of a main electric-discharging protection gap and the insulation strength of an auxiliary electric-discharging protection gap are smaller than that of the protected insulator chain, therefore voltage produced during lightning preferably puncture the protection gap. When the protection gap is punctured to discharge electricity, high temperature arc is produced inside the auxiliary electric-discharging protection gap, the air is rapidly heated to expand in the semi-enclosed space of the auxiliary electric-discharging protection gap, and the arc is elongated and erupted along an air guide hole. Simultaneously a signal acquisition device automatically collects signals and starts up an air generation device, and therefore high-speed airflow is generated suddenly to extinguish the arc. The multi-gap self-expansion strong air-blast arc extinction lightning-protection protecting device is simple in structure, convenient to install. In addition, when lightning happens in the line, the multi-gap self-expansion strong air-blast arc extinction lightning-protection protecting device can rapidly discharge the lightning current to the ground and simultaneously generate the high-speed airflow to extinguish power frequency follow current, thereby effectively protecting the power equipment and improving reliability of power supply.
Description
Technical field
The utility model relates to a kind of lightning protection device, specifically a kind of many gaps self-expanding air blast arc extinguishing lightning protection device that is used for each electric pressure transmission line.
Background technology
The transmission line lightning protection always is the important content of power department lightning protection work, and lightning fault remains one of key factor that influences power grid security.The impulse flashover that transmission line causes when thunderbolt takes place causes the line insulator flashover, produces very big power frequency continued flow then, damages insulator string and gold utensil, causes line accident.Traditional " obstruction type " lightning protection mode is because its limitation can not solve the thunderbolt problem at all.Therefore the general employing of power department is installed gap or the leakage conductor protected in parallel additional at transmission line and is realized protective wire.Yet in the actual motion, protection gap in parallel and leakage conductor all have its obvious defects as follows:
At first, when thunderbolt took place transmission line, protection in parallel gap leaked into the earth preferentially because of the overvoltage that thunderbolt causes punctures with lightning current, thereby plays the effect of protection transmission line and electric equipment.Yet because protection in parallel gap does not have the arc extinguishing ability; can not extinguish the power frequency continued flow that causes behind the insulator string flashover; electric arc is long-time calcination between the protection gap; to cause insulator string to damage; when serious; may cause the transmission line broken string, electric arc can cause ablation and reduce its protective value electrode simultaneously.The final circuit breaker that relies on comes extinguish arcs to realize protecting transmission line and equipment, is to sacrifice the way that " trip-out rate " and " power supply reliability " exchanges " low rate of failure " for.
Secondly, leakage conductor costs an arm and a leg, use, maintenance cost height, Leakage Current is big, and useful life is short, changes frequent, and the zinc oxide module used of leakage conductor under lightning impulse owing to there is tangible kelvin effect, blast causes the circuit chromic trouble easily, is unfavorable for electrical network economy, safety, stable operation.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming in the above-mentioned background technology, and a kind of many gaps self-expanding air blast arc extinguishing lightning protection device is provided.The utility model is at the actual conditions of China's multi-thunder area transmission line; the a large amount of exploitative experiment that carries out; designed a kind of suspension insulator (porcelain that can be used for each electric pressure transmission line; glass; composite material) and many gaps self-expanding air blast arc extinguishing lightning protection device of strain insulator string and post insulator; this many gaps self-expanding air blast arc extinguishing lightning protection device comprises ground connection lateral electrode connector (1); signal pickup assembly (3); gas generating unit (4); kicker magnet fixture (5); ground connection lateral electrode (6); the auxiliary discharge protection gap (8) of many interstitial structures; lead lateral electrode (9); lead lateral electrode connector (11); described lightning protection device is installed in parallel in line insulator string one side; and formation is the main discharge protection gap (7) of dielectric with the air between described ground connection lateral electrode (6) and lead lateral electrode (9), is that many interstitial structures (8) of dielectric are series at lead lateral electrode (9) formation auxiliary discharge protection gap with the air.Main discharge protection gap (7) and auxiliary gap (8) dielectric strength together are less than the dielectric strength of protected insulator string (12), thus the preferential breakdown protection of the overvoltage gap that when thunderbolt takes place circuit, produces.Gas generating unit (4) is installed near the main discharge gap (7); in the time of the protection spark-over of gap; the automatic acquired signal of signal pickup assembly (3) also starts gas generating unit (4), and moment produces the high velocity air arc extinguishing, thereby protects transmission facility to avoid damaging effectively.The auxiliary protection gap (8) of many interstitial structures is mainly played dividing potential drop, balanced energy, is resisted and restrike, assist arc extinguishing.When the auxiliary discharge of many interstitial structures was protected gap (8) disruptive discharge, the electric arc of generation heated air in the small space of sealing made its rapid expanding, elongates electric arc rapidly and sprays from gas port.Auxiliary discharge protection gap (8), many gaps internal electrode adopts nonmetallic electric conducting material; during disruptive discharge, can not produce metallic vapour, help extinguishing of electric arc between the gap; and each little gap in auxiliary discharge protection gap is uniform electric field, can prevent restriking behind the arc extinguishing effectively.
The utility model has remarkable advantages with respect to parallel connection gaps and leakage conductor; when normally moving, circuit do not have afterflow; when taking place, Lightning Over-voltage can start rapidly; reliable arc extinguishing when " dredging " lightning current; and can be, thereby avoid line tripping to take place with arc extinction before relay protection of transmission line action.But and repetitive operation, gas generating unit can charged for replacement.Because the time compole that electric arc continues is short, electrode material does not have ablation substantially, can steady in a long-term move.
The utility model usage range is extensive, is not subjected to the influence of electric pressure, conductor arrangement, insulator type, shaft tower tower, polar effect; Simple in structure, easy for installation, stable performance, reliable operation, reusable, operating cost is low, and maintenance is few.Produce high velocity air when it can leak into the earth with lightning current fast when thunderbolt takes place circuit and extinguish power frequency continued flow, thereby protect power equipment effectively, improve power supply reliability.
Description of drawings
Fig. 1 is a structure chart of the present utility model
Fig. 2 is the auxiliary discharge protection gap schematic diagram that has many interstitial structures in the utility model
Fig. 3 is the signal pickup assembly schematic diagram in the utility model
Embodiment
Describe the execution mode of many gaps self-expanding air blast arc extinguishing lightning protection device of the present utility model in detail below in conjunction with accompanying drawing.
Referring to Fig. 1; this many gaps self-expanding air blast arc extinguishing lightning protection device comprises ground connection lateral electrode connector (1); signal pickup assembly (3); gas generating unit (4); kicker magnet fixture (5); ground connection lateral electrode (6); the auxiliary discharge protection gap (8) of many interstitial structures; lead lateral electrode (9); lead lateral electrode connector (11); described many gaps self-expanding air blast arc extinguishing lightning protection device is installed in parallel in line insulator string (12) one sides; the a end of ground connection lateral electrode (6) is connected to insulator link (2) by ground connection side connector (1); the a end of lead lateral electrode (9) is connected to insulator yoke plate (10) by lead side connector (11); it with the air b end that a end in auxiliary discharge protection gap (8) of many interstitial structures of dielectric is connected to line side electrode (9); and formation is the main discharge protection gap (7) of dielectric with the air between the b in the b in auxiliary discharge protection gap (8) end and ground connection lateral electrode (6) holds; the signal pickup assembly of hollow structure (3) passes ground connection lateral electrode (6) and is connected to gas generator gas generating unit (4) by lead; gas generating unit (4) is installed near the main discharge gap (7) by kicker magnet fixture (5), and guarantees to produce the high velocity jet air-flow that can reliably extinguish electric arc between main discharge protection gap (8).Gas generating unit (4) is 30～50mm with the horizontal range of ground connection lateral electrode (6) end, and vertical range is 10～20mm.
Transmission line is normally in service, potential difference between the protection gap (main protection discharging gap and auxiliary protection discharging gap) equals the circuit phase voltage, reach the disruptive critical voltage in protection gap far away, the protection gap can be not breakdown, no current passes through in the electrode, thereby the signal pickup assembly induction can not start gas generating unit less than lightning current yet; When thunderbolt takes place in transmission line (direct lightning strike or induction thunder); the overvoltage ripple that produces is transferred to the line insulator string place by lead; because the dielectric strength in this protection gap is lower than the insulator string of protected insulator; the protection gap preferentially punctures; lightning current is leaked into the earth; reduce superpotential amplitude, thereby play the effect of protection insulator string and circuit and electric equipment.Simultaneously, when lightning current flow through the ground connection lateral electrode, signal pickup assembly induction lightening stream also started gas generating unit rapidly automatically, and moment produces jet-stream wind.Because this air-flow has high speed, can produce greatly electric arc and impact, electric arc is elongated when sharply being cooled off, and extinguishes thereby can not be maintained until.When the auxiliary discharge protection gap breakdown of many interstitial structures was put, the electric arc of generation heated air in semi-enclosed small space made its rapid expanding, elongates electric arc rapidly and sprays from gas port.Auxiliary discharge protection gap, many gaps internal electrode adopts nonmetallic electric conducting material; during disruptive discharge, can not produce metallic vapour, help extinguishing of electric arc between the gap; and each little gap in auxiliary discharge protection gap is uniform electric field, can prevent restriking behind the arc extinguishing effectively.
The utility model has remarkable advantages with respect to parallel connection gaps and leakage conductor; when normally moving, circuit do not have afterflow; when taking place, Lightning Over-voltage can start rapidly; reliable arc extinguishing when " dredging " lightning current; and can be, thereby avoid line tripping to take place with arc extinction before relay protection of transmission line action.Described device can protect the distance in gap to adapt to different electric pressures by adjusting main discharge protection gap and auxiliary discharge.The ground connection connector can be adjusted to adapt to different insulator strings, turriform etc. with the lead connector.
Since the high velocity jet gas that gas generating unit produces can moment arc extinguishing, thereby the time compole that makes electric arc continue between electrode is short, electrode material does not have ablation substantially; The kicker magnet fixed form that gas generating unit adopts, replacing, thereby this device easily can be used repeatedly, reaches once mounting, repeatedly the purpose of income.Greatly save investment.And the gas that this device produces is safe from harm compliance with environmental protection requirements to biological, environment.
Referring to Fig. 2; auxiliary discharge protection gap (8) is composed in series by a plurality of little gaps; each closely spaced nonmetal electrode is cylindrical, and the air gap distance that forms between adjacent two nonmetal electrodes is less than half of described spheric electrode radius, and each little gap has the discharge gas port.
Referring to Fig. 3, signal pickup assembly (3) adopts the insulated conductor of 12～18 numbers of turn to walk around the middle outage conducting magnet core that is complementary with electrode shape, passes and be fixed in the middle part of ground connection lateral electrode (6).It has the iron core of the high magnetic conduction ability of the hollow circular that matches with electrode material, makes it can respond to and start gas generating unit fast during by lightning current in the ground connection lateral electrode.
Although the utility model is described; but foregoing description just for illustrative purposes; the utility model is not limited to above-mentioned specific descriptions in conjunction with the accompanying drawings; those of ordinary skills have the ability that it is not broken away from the various changes of spirit of the present invention, and protection range of the present utility model is defined by the claims.
Claims (4)
1. the air blast of gap self-expanding more than kind arc extinguishing lightning protection device; it is characterized in that; this device comprises ground connection lateral electrode connector (1); signal pickup assembly (3); gas generating unit (4); kicker magnet fixture (5); ground connection lateral electrode (6); the auxiliary discharge protection gap (8) of many interstitial structures; lead lateral electrode (9); lead lateral electrode connector (11); described many gaps self-expanding air blast arc extinguishing lightning protection device is installed in parallel in line insulator string (12) one sides; the a end of ground connection lateral electrode (6) is connected to insulator link (2) by ground connection side connector (1); the a end of lead lateral electrode (9) is connected to insulator yoke plate (10) by lead side connector (11); it with the air b end that a end in auxiliary discharge protection gap (8) of many interstitial structures of dielectric is connected to line side electrode (9); and formation is the main discharge protection gap (7) of dielectric with the air between the b in the b in auxiliary discharge protection gap (8) end and ground connection lateral electrode (6) holds; the signal pickup assembly of hollow structure (3) passes ground connection lateral electrode (6) and is connected to gas generator gas generating unit (4) by lead; gas generating unit (4) is installed near the main discharge gap (7) by kicker magnet fixture (5), and guarantees to produce the high velocity jet air-flow that can reliably extinguish electric arc between main discharge protection gap (8).
2. many gaps self-expanding air blast arc extinguishing lightning protection device according to claim 1; it is characterized in that; auxiliary discharge protection gap (8) is composed in series by a plurality of little gaps; each closely spaced nonmetal electrode is cylindrical; the air gap distance that forms between adjacent two nonmetal electrodes is less than half of described spheric electrode radius, and each little gap has the discharge gas port.
3. many gaps self-expanding air blast arc extinguishing lightning protection device according to claim 1 is characterized in that, gas generating unit (4) is 30～50mm with the horizontal range of ground connection lateral electrode (6) end, and vertical range is 10～20mm.
4. many gaps self-expanding air blast arc extinguishing lightning protection device according to claim 1; it is characterized in that; described signal pickup assembly (3) adopts the insulated conductor of 12～18 numbers of turn to walk around the middle outage conducting magnet core that is complementary with electrode shape, passes and be fixed in the middle part of ground connection lateral electrode (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206376951U CN202042294U (en) | 2010-12-02 | 2010-12-02 | Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206376951U CN202042294U (en) | 2010-12-02 | 2010-12-02 | Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device |
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| CN202042294U true CN202042294U (en) | 2011-11-16 |
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| CN2010206376951U Expired - Lifetime CN202042294U (en) | 2010-12-02 | 2010-12-02 | Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486954A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN103138253A (en) * | 2012-04-16 | 2013-06-05 | 龚迪阳 | Thunder-lightening inducing arc extinction belt |
| CN112117647A (en) * | 2019-06-20 | 2020-12-22 | 南宁超伏电气科技有限公司 | Supercharged single-recoil arc extinguishing method and application |
-
2010
- 2010-12-02 CN CN2010206376951U patent/CN202042294U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486954A (en) * | 2010-12-02 | 2012-06-06 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN102486954B (en) * | 2010-12-02 | 2013-08-07 | 王巨丰 | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device |
| CN103138253A (en) * | 2012-04-16 | 2013-06-05 | 龚迪阳 | Thunder-lightening inducing arc extinction belt |
| CN103138253B (en) * | 2012-04-16 | 2015-11-18 | 龚迪阳 | Thunder and lightning induction arc extinguishing band |
| CN112117647A (en) * | 2019-06-20 | 2020-12-22 | 南宁超伏电气科技有限公司 | Supercharged single-recoil arc extinguishing method and application |
| CN112117644A (en) * | 2019-06-20 | 2020-12-22 | 南宁超伏电气科技有限公司 | Supercharged multi-stage recoil arc-extinguishing method and system |
| CN112117644B (en) * | 2019-06-20 | 2022-04-08 | 南宁超伏电气科技有限公司 | Supercharged multi-stage recoil arc-extinguishing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanning super Volt Electric Technology Co., Ltd. Assignor: Wang Jufeng Contract record no.: 2012450000054 Denomination of utility model: Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device Granted publication date: 20111116 License type: Exclusive License Record date: 20120706 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111116 Effective date of abandoning: 20130807 |
|
| RGAV | Abandon patent right to avoid regrant |