CN203056371U - Jet-propelled parallel gap device - Google Patents
Jet-propelled parallel gap device Download PDFInfo
- Publication number
- CN203056371U CN203056371U CN 201220526473 CN201220526473U CN203056371U CN 203056371 U CN203056371 U CN 203056371U CN 201220526473 CN201220526473 CN 201220526473 CN 201220526473 U CN201220526473 U CN 201220526473U CN 203056371 U CN203056371 U CN 203056371U
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- arc
- jet
- electric arc
- control device
- propelled
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Abstract
The utility model discloses a jet-propelled parallel gap device, and a protective device belongs to lightning protection gaps of electric transmission lines of AC and DC electric power systems. The device is parallelly installed on an insulator chain of an electric transmission line. The device is broken down earlier than the insulator chain in lightning stroke, thereby protecting the insulator chain and the corresponding electric transmission line. The device can rapidly generate high-speed and high-pressure draft to act on arcs to restrain formation and development of the arcs, so the arcs die out in a transient state and lightning trip-out rates and lightning incidence rates of an electric power system are reduced. The utility model discloses a jet-propelled parallel gap device, comprising arc-control devices of a grounding side and a wire side, and parallel spiral fittings of a fixed device. The parallel spiral fittings are installed on two ends of a line insulator chain. The grounding side arc-control device and the wire side arc-control device respectively comprise arc extinguishing powder storerooms, arc lightning arrester rings, an insulating gas generating chamber, an arc jet channel, etc. The device improves stability of the electric power system, effectively reduces the number of on-load operation of a breaker, prolongs service life of transformers and other electrical equipment, and cost of production, operation, and maintenance is very low.
Description
Technical field
The utility model relates to a kind of gas arc extinguishing lightning protection device, has been specifically related to a kind of jet-propelled parallel connection gaps device.
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 circuit broken string 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 have its obvious defects as follows:
At first, when thunderbolt took place transmission line, protection in parallel gap leaked into the earth preferentially because 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 is expensive, 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 easily causes the circuit chromic trouble under the big electric current, is unfavorable for electrical network economy, safety, stable operation.
At last, the thunderbolt short circuit accident causes fuser belt load action frequency to increase severely, and has not only shortened the life-span of circuit breaker, and other important power equipments such as transformer etc. are on the hazard.
Therefore, a kind of performance of urgent need is reliable more on the market, economic benefit is better, can effectively extinguish thunderbolt short circuit power frequency continued flow electric arc, reduces the lightning protection inter space protective device of tripping rate with lightning strike and stroke-incidence rate.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, a kind of overhead transmission line, arc current that can initiatively weaken that is applicable to various electric pressures is provided, prevented that clearance electrode is subjected to electric arc to burn damage, is convenient to change arc-control device, reduces power system transmission line tripping rate with lightning strike and rate of failure, raising stability of power system, prolongs power equipment useful life such as transformer, circuit breaker and reduces that electrical network is installed, the jet-propelled parallel connection gaps device of operation expense.
To achieve these goals, the present invention has adopted following technical scheme: a kind of jet-propelled parallel connection gaps device comprises ground connection side arc-control device, lead side arc-control device, is installed on the spiral gold utensil in parallel (2) at line insulator string two ends; Ground connection side arc-control device and lead side arc-control device comprise respectively that all arc extinguishing pulvis storeroom (4), electric arc connect sudden strain of a muscle ring (7), insulation aerogenesis chamber (8) and spray arc passage (9).
During the thunderbolt transmission line, the passage that power frequency continued flow electric arc flows through is roughly: the electric arc of lead side parallel connection spiral gold utensil (2)-lead side arc-control device connects the electric arc that dodges ring (7)-lead side spray arc passage (9)-air main gap-ground connection side spray arc passage-ground connection side arc-control device and connects sudden strain of a muscle ring (7)-ground connection side spiral gold utensil (2) in parallel; If the thunderbolt shaft tower this turn around in proper order.
Spiral gold utensil in parallel (2) is processed into spiral-shaped by the conducting metal manufacturing.During the thunderbolt short circuit, being equivalent to has increased reactance value to short-circuit loop.Therefore it can absorb the short circuit capacity current, reduces the short circuit current effective value; The rate of climb that simultaneously can effectively slow down short circuit current again, the transient process that prolongs short circuit current.This just is equivalent to both strive to arc-control device has got the time, makes electronegative gas act on relatively little electric arc again, is beneficial to finally extinguishing of electric arc.
Electric arc connects and dodges the making of ring (7) employing non-metallic conducting material, has the cold cathode effect, can effectively reduce the metal arc amount of ions of arc channel, and reduces electric arc arc root temperature; Use the electric arc of non-metallic conducting material to connect the sudden strain of a muscle ring as an end that connects the lightning arc, thunder and lightning punctures behind the air main gap cylindricality electric arc and just can be dissipated into annular automatically and connect sudden strain of a muscle and extremely go up like this, thereby the arc column disappearance when connecing the sudden strain of a muscle utmost point by the non-metallic conducting material annular that makes electric arc can effectively reduce Arc Temperature the thermal ionization degree is reduced, and the electric arc gas forceful action around can making has successfully increased interaction area and the efficient of arc extinguishing gases and electric arc in the electric arc that does not disappear.
The interior electric arc of spray arc passage (9) connects to dodge several air time gap between the ring (7).When thunder and lightning punctures, the dividing potential drop effect is played by air arc resistance in air time gap, can effectively reduce the power frequency recovery voltage of air main gap, under the constant situation of spatial joint clearance insulation recovery intensity, power frequency recovery voltage descends, and not only is easy to arc extinction but also the probability of arc reignition is descended
Gas exhausted material (5) in insulation aerogenesis chamber (8) and the arc extinguishing pulvis storeroom (4) all is by the material manufacturing that can produce electronegative gas under high-temperature and high-pressure conditions soon.
It is very fast that arc-control device produces the speed of a large amount of electronegative gases.There is not electric arc detecting device in this arc-control device, as long as the thunder and lightning puncture is also built the arc success, electric arc flows through the spray arc passage (9) of arc-control device, the electric arc gas that the inwall of insulation aerogenesis chamber (8) and the gas exhausted material (5) in the arc extinguishing pulvis storeroom (4) will produce High Voltage fast under the high-temperature and high-pressure conditions effect of electric arc.Power frequency continued flow electric arc will be subjected to High Voltage electronegative gas effect from all directions like this, and from spray arc passage (9) ejection, has increased the coefficient of heat transfer of arc space, and electric arc is successfully extinguished; And because there is not relevant electric arc detecting device, so there is not arc-control device misoperation problem.
Obvious displacement can not take place in bulb and the link plate secure fixation at spiral gold utensil (2) one ends in parallel and line insulator string two ends; The other end is opened internal screw thread, reliably is connected with the screw rod (3) that welds on ground connection side arc-control device or the lead side arc-control device; Realized following purpose like this: during the transmission line interruption maintenance, spiral gold utensil in parallel (2) need not to change, and only needs ground connection side arc-control device or lead side arc-control device are screwed down, and the arc-control device that more renews again gets final product, it is simple and easy to change operation, can shorten interruption duration greatly.
Arc extinguishing pulvis storeroom (4) also is to be connected by screw rod with insulation aerogenesis chamber, does not have complicated procedure, greatly reduces the production cost of jet-propelled parallel connection gaps device.
Advantage of the present utility model:
The utility model has remarkable advantages with respect to existing parallel connection gaps and leakage conductor, when normally moving, circuit do not have afterflow, can start rapidly when producing the thunderbolt power frequency continued flow, reliable arc extinguishing when " dredging " lightning current, and can be with arc extinction before the relay protection of transmission line action, thereby avoid line tripping to take place, thereby protect power equipment effectively, improve power supply reliability; 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.
1. non-metallic conducting material electric arc connects and dodges ring and can adopt non-metallic conducting material, and (as electric conducting materials such as C element, Si elements) has the cold cathode effect, thereby the energy that can suppress electric arc is beneficial to and extinguishes.Can certainly directly adopt the metallic conduction material to make.Use the electric arc of non-metallic conducting material to connect the sudden strain of a muscle ring as an end that connects the lightning arc, cylindricality electric arc just can be dissipated on the tube electrode automatically after thunder and lightning punctured like this, thereby the arc column that makes electric arc disappears by the tubular earth electrode of non-metallic conducting material the time and can effectively reduce Arc Temperature and degree of ionization, and can make arc extinguishing gas ball from length and breadth to forceful action in the electric arc that does not disappear, successfully increased interaction area and the efficient of arc extinguishing gases and electric arc.
2. the spiral gold utensil in parallel (2) of this device is processed into spiral-shaped by the conducting metal manufacturing.During the thunderbolt short circuit, being equivalent to has increased reactance value to short-circuit loop.Therefore it can absorb the short circuit capacity current, reduces the short circuit current effective value; The rate of climb that simultaneously can effectively slow down short circuit current again, the transient process that prolongs short circuit current.This just is equivalent to both strive to arc-control device has got the time, makes electronegative gas act on relatively little electric arc again, is beneficial to finally extinguishing of electric arc.
3. suitable tiny of the spray arc passage (9) of this device, electric arc by the time, produce a spot of gas and just can make the electronegative gas that in semi-enclosed tiny space, can produce enough pressure that electric arc is driven out passage, be conducive to extinguishing of electric arc.
4. the electronegative gas effect that aerogenesis chamber (8) inner surface produces that not only is subjected to insulating of the power frequency continued flow electric arc in this device spray arc passage (9), another direction effect from the electronegative gas of tube wall fumarole (6) ejection of being subjected to also that gas exhausted material (5) produces simultaneously, attacking from both sides is conducive to extinguishing fast of electric arc.
5. lead side or ground connection side arc-control device are connected by internal and external threads with gold utensil, are conducive to the simple and easy replacing of arc extinguishing tube, have improved with changing efficient.
6. reduce power system transmission line tripping rate with lightning strike and rate of failure, raising stability of power system, prolong power equipment such as transformer, circuit breaker useful life, saved maintenance, the maintenance cost of equipment cost and system greatly.
7. suitable tiny of spray arc passage (9) is conducive to the quick aerogenesis of arc quenching agent, and the built-in electrical insulation intensity of insulation aerogenesis chamber (8) is recovered rapidly, effectively prevents and suppresses arc reignition.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the schematic diagram of the arc-control device of the utility model one embodiment.
Fig. 3 is the arc extinguishing pulvis storeroom of the utility model one embodiment and the schematic diagram of gas exhausted material.
Reference numeral: line insulator string 1, insulator spiral gold utensil 2 in parallel, welding screw rod 3, arc extinguishing pulvis storeroom 4, gas exhausted material 5, tube wall fumarole 6, electric arc connect and dodge ring 7, insulation aerogenesis chamber 8, spray arc passage 9, screw channel 10.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment 1:
As shown in Figure 1, a kind of jet-propelled parallel connection gaps device comprises that ground connection side arc-control device, lead side arc-control device, fixture are installed on the spiral gold utensil in parallel (2) at line insulator string two ends; Ground connection side arc-control device and lead side arc-control device comprise respectively that all arc extinguishing pulvis storeroom (4), electric arc connect sudden strain of a muscle ring (7), insulation aerogenesis chamber (8) and spray arc passage (9); During the thunderbolt transmission line, the passage that power frequency continued flow electric arc flows through is roughly: the electric arc of lead side parallel connection spiral gold utensil (2)-lead side arc-control device connects the electric arc that dodges ring (7)-lead side spray arc passage (9)-air main gap-ground connection side spray arc passage-ground connection side arc-control device and connects sudden strain of a muscle ring (7)-ground connection side spiral gold utensil (2) in parallel; If the thunderbolt shaft tower this turn around in proper order.
As shown in Figure 2, the arc extinguishing pulvis storeroom (4) of arc-control device is connected with the bolt and nut Simple and Reliable by screw channel (10) with insulation aerogenesis chamber (8); The embedded some electric arcs in insulation aerogenesis chamber (8) connect and dodge ring (7), and it is air this gap that each electric arc connects between the sudden strain of a muscle ring.In close arc extinguishing pulvis storeroom (4) one sides, welding screw rod (3) is welded on electric arc and connects the sudden strain of a muscle ring upward and pass the aerogenesis chamber of insulating, and the part of stretching out will be in the reliable connection of spiral gold utensil in parallel (2).
As shown in Figure 3, interior pulverous gas exhausted material (5) has been full of arc extinguishing pulvis storeroom (4) inside, and can fall naturally from top to down, can fill down automatically after following gas exhausted material uses up.
Claims (7)
1. jet-propelled parallel connection gaps device comprises ground connection side arc-control device, lead side arc-control device, is installed on the spiral gold utensil in parallel (2) at line insulator string two ends; Ground connection side arc-control device and lead side arc-control device comprise respectively that all arc extinguishing pulvis storeroom (4), electric arc connect sudden strain of a muscle ring (7), insulation aerogenesis chamber (8) and spray arc passage (9); It is characterized in that: described spiral gold utensil (2) one ends in parallel and line insulator string two ends secure fixation, obvious displacement can not take place, the other end is opened internal screw thread, reliably is connected with the screw rod (3) that welds on ground connection side arc-control device or the lead side arc-control device.
2. jet-propelled parallel connection gaps device according to claim 1, it is characterized in that: described spiral gold utensil in parallel (2) is processed into spiral shape.
3. jet-propelled parallel connection gaps device according to claim 1 is characterized in that: described arc extinguishing pulvis storeroom (4) has some internal screw threads that can reliably be connected with insulation aerogenesis chamber (8), and at the intensive tube wall fumarole (6) that distributing of the latter half; Arc extinguishing pulvis storeroom (4) inside is full of pulverous gas exhausted material (5), can produce a large amount of electronegative gases from the spouting power frequency continued flow electric arc that acts on of tube wall fumarole (6) under the high temperature of electric arc burns.
4. jet-propelled parallel connection gaps device according to claim 1, it is characterized in that: there are some internal screw threads that can reliably be connected with arc extinguishing pulvis storeroom (4) described insulation aerogenesis chamber (8), and the electric arc of some conductions connects and dodges ring (7) on the interior welds of pipe; Welding screw rod (3) one ends are screwed into the internal screw thread of spiral gold utensil in parallel (2), and the other end and electric arc connect and dodges ring (7) welding; The inwall of insulation aerogenesis chamber (8) burns can produce a large amount of electronegative gases down and attack from both sides from the spouting gas of tube wall fumarole (6) at the high temperature of electric arc and acts on power frequency continued flow electric arc.
5. according to the arbitrary described jet-propelled parallel connection gaps device of claim 3-4, it is characterized in that: described arc extinguishing pulvis storeroom (4) can be connected with the screw rod better way by screw channel (10) with insulation aerogenesis chamber (8); Between arc extinguishing pulvis storeroom (4) and insulation aerogenesis chamber (8), there is spray arc passage (9).
6. jet-propelled parallel connection gaps device according to claim 4 is characterized in that: spray the interior electric arc of arc passage (9) and connect several air of existence time gap between the sudden strain of a muscle ring (7).
7. jet-propelled parallel connection gaps device according to claim 1 is characterized in that: described lead side electric arc connects and dodges ring and ground connection side electric arc and connect to dodge and form the protection main gap between the ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526473 CN203056371U (en) | 2012-10-15 | 2012-10-15 | Jet-propelled parallel gap device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526473 CN203056371U (en) | 2012-10-15 | 2012-10-15 | Jet-propelled parallel gap device |
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| Publication Number | Publication Date |
|---|---|
| CN203056371U true CN203056371U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220526473 Expired - Lifetime CN203056371U (en) | 2012-10-15 | 2012-10-15 | Jet-propelled parallel gap device |
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| CN (1) | CN203056371U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730834A (en) * | 2012-10-15 | 2014-04-16 | 闫仁宝 | Gas injection type parallel gap device |
| CN103812007A (en) * | 2014-01-24 | 2014-05-21 | 广州供电局有限公司 | Band gap puffer type medium voltage lightning arrester for overhead distribution line |
| WO2015007071A1 (en) * | 2013-07-16 | 2015-01-22 | Wang Jufeng | Lightning protection gap device for segmental arc extinguishing at different voltage classes |
| CN104332828A (en) * | 2014-11-13 | 2015-02-04 | 王巨丰 | Arc-extinguishing lightning-proof clearance device capable of preventing continuous flash-over or multiple flash-over |
| CN108987209A (en) * | 2018-09-25 | 2018-12-11 | 西安柏泰电气有限公司 | A kind of arc-extinguish chamber |
| CN112117070A (en) * | 2019-06-20 | 2020-12-22 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
-
2012
- 2012-10-15 CN CN 201220526473 patent/CN203056371U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730834A (en) * | 2012-10-15 | 2014-04-16 | 闫仁宝 | Gas injection type parallel gap device |
| CN103730834B (en) * | 2012-10-15 | 2016-01-27 | 闫仁宝 | Jet-propelled parallel connection clearance device |
| WO2015007071A1 (en) * | 2013-07-16 | 2015-01-22 | Wang Jufeng | Lightning protection gap device for segmental arc extinguishing at different voltage classes |
| CN103812007A (en) * | 2014-01-24 | 2014-05-21 | 广州供电局有限公司 | Band gap puffer type medium voltage lightning arrester for overhead distribution line |
| CN104332828A (en) * | 2014-11-13 | 2015-02-04 | 王巨丰 | Arc-extinguishing lightning-proof clearance device capable of preventing continuous flash-over or multiple flash-over |
| CN108987209A (en) * | 2018-09-25 | 2018-12-11 | 西安柏泰电气有限公司 | A kind of arc-extinguish chamber |
| CN108987209B (en) * | 2018-09-25 | 2024-03-08 | 西安柏泰电气有限公司 | Arc extinguishing cover |
| CN112117070A (en) * | 2019-06-20 | 2020-12-22 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
| CN112117070B (en) * | 2019-06-20 | 2022-03-08 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |