CN209658608U - A kind of multi-stag recoil electric discharge arc-extinguishing tube - Google Patents

Abstract

The utility model discloses a kind of multi-stag recoil electric discharge arc-extinguishing tubes, apparatus main body including straight-tube shape, it is hollow structure inside apparatus main body, apparatus main body bottom is equipped with opening, compartment of terrain is inlaid with several and leads arc ball from top to bottom in apparatus main body, recoil injection nozzle is additionally provided on the two adjacent apparatus main body outer surfaces led between arc ball, becket and chain-wales are installed in the two adjacent apparatus main bodies led between arc ball, the top of recoil jet port is arranged in chain-wales, becket is mounted on chain-wales, and the interior sidewall surface of apparatus main body is close in the outer surface of becket.The utility model simple structure and reasonable design, by recoiling electric arc since electric arc is truncated in narrow pipe perfusion effect in level-one longitudinal direction recoil tube and multistage side recoil tube, electric arc can be made to form multibreak, significantly cut down arc energy, be conducive to be truncated and extinguish electric arc.

Description

A kind of multi-stag recoil electric discharge arc-extinguishing tube

Technical field

The utility model belongs to the electric armour clamp technical field of power transmission and distribution overhead transmission line, is related to a kind of recoil of multi-stag and puts Electric arc-extinguishing tube.

Background technique

Electric power energy and load center distribution in China is very unbalanced, mainly generated electricity with coal based on.Coal resources are big Part concentrates on the Northwest, and developable waterpower resourses are concentrated mainly on western and middle part, and in the load in China The heart concentrates on East Coastal, Beijing-Tianjin-Tangshan and middle part developed regions.Which dictates that China will solve the electrical problems of load center, it must Trans-regional, large capacity and remote energy delivery channel are so built while Devoting Major Efforts To Developing waterpower and thermal power generation.

With the continuous raising of transmission line of electricity voltage class, the accumulative extra-high voltage project for having built up " eight friendships ten are straight " of country, The transmission line of electricity for foring more than 110 ten thousand kms possesses more than nearly 5,000 ten thousand base shaft towers, and according to statistics, electric network thunderstorm damage risk is mainly concentrated In transmission line of electricity, damage to crops caused by thunder, which is still, influences the safe and stable and reliable key factor of power transmission network.Existing lightning protection system Mainly " obstructive type " lightning protection mode, major measure are to set up lightning conducter and coupling ground wire, reduce pole tower ground resistance, splicing thread Road insulation and installation leakage conductor etc. are limited to since its validity, safety and economy exist, and are only capable of protection single Weak lightning stroke, to it is huge lightning stroke there are huge blank with multiple lightning Protection.Existing " diverting type " lightning protection mode, mainly exists Portable protective gaps in parallel are installed at insulator chain both ends, although its structure is simple, easy for installation, since it does not have arc-suppression function mould Block makes to continue to flow into short circuit current in system, can only rely on circuit breaker trip short circuit current, with " trip-out rate exchanges accident rate for ", Easily cause the huge safety accident of route.Simultaneously as the ablation of short circuit current acts on, so that portable protective gaps Insulation Coordination in parallel is lost Effect, loses the function of application.

If Patent No. 2015100691235 discloses a kind of countable section of arc lightning protection device, although the patent plays lightning protection Arrive good effect, but still some shortcomings, only vertical to blow arc quenching method, when electric arc is stronger, electric arc is not easy to blow out.

Utility model content

The utility model in view of the deficiencies of the prior art, proposes that one kind can make electric arc form multibreak, significantly cuts down Arc energy is conducive to the multi-stag recoil electric discharge arc-extinguishing tube for being truncated and extinguishing electric arc.

To achieve the goals above, the utility model uses following technical scheme:

A kind of multi-stag recoil electric discharge arc-extinguishing tube, the apparatus main body including straight-tube shape；In being inside the apparatus main body Hollow structure；It is equipped with opening in the apparatus main body bottom, the bottom opening of apparatus main body constitutes bottom recoil nozzle；Described Apparatus main body in from top to bottom compartment of terrain be inlaid with several and lead arc ball；Outside the two adjacent apparatus main bodies led between arc ball Recoil air-flow injection pipe mouth is additionally provided on surface, recoil air-flow injection pipe mouth is connected with the internal cavities of apparatus main body；Two Becket and chain-wales are installed in the adjacent apparatus main body led between arc ball；The chain-wales setting is in recoil jet port Top, recoil air-flow jet port include recoil injection nozzle and bottom recoil nozzle；The becket is mounted on chain-wales On, and the interior sidewall surface of apparatus main body is close in the outer surface of becket.

As further technological improvement, the described recoil injection nozzle is to be obliquely installed, and recoil and spray nozzle and be in Horn-like structure.Loudspeaker are open outwardly, and horn-like recoil injection nozzle can increase the density in apparatus main body pipe and outside pipe Difference, temperature difference and pressure difference keep recoil jet-action more strong, and arc quenching effect becomes apparent.

As further technological improvement, the arc ball of leading is sphere structure.

As further technological improvement, the arc ball of leading is arranged equally spaced in apparatus main body；And recoil spray Nozzle is penetrated to be arranged on the apparatus main body that two lead arc ball middle position.

As further technological improvement, two adjacent recoil injection nozzles are arranged in the two sides of device noumenon respectively.

Recoil electric discharge arc-extinguishing tube in the utility model is a narrow pipe perfusion channel, this is that electric arc enters the unique of device Channel.The physical change of multiplicity is generated in filling process.

1. elastic deformation occurs for arc-plasma.Arc-plasma enter recoil tube inlet when, physics shape first Shape changes, and becomes superfine electric arc by thick electric arc, and radial pressure changes into axial compressive force, due to narrow pipe recoil effect, In Spouting velocity can be accelerated when electric arc recoils.

2. electric arc temperature-rise effect aggravates.After electric arc attenuates, electric arc cross-sectional area reduces, according to formula, electric arc electricity Resistance can substantial increase.Due to thunder and lightning arc practical experience work in frequently as constant-current source, according to formula It is found that although impact when the time only have several microseconds, integral energy can enhance, and the containing warm-natured degree of recoil tube can increase.

Arc radiation, convection current, three kinds of modes that conduction is energy loss, due to closed conduct, that is, exogenous closure environment Under, heat cannot be released, and play the role of blocking to electric arc, and only meeting heat production, will not radiate, therefore can generate blocking Temperature rise so that manage in constant temperature increase.

3. quick-fried effect is pressed to sharply increase.It is stepped up the increase so that electric arc accumulation property when temperature, is further aggravated Pressure quick-fried effect, keeps arc spraying dynamics bigger.

Apparatus main body is multiple using high-intensitive, high temperature resistant and high voltage bearing ceramal, rare-earth ceramic, graphene-ceramics Condensation material, organic ceramic, silastic elastomer, organic insulating material, glass alloy, rare earth glass, Graphene glass, organic glass It is made into；Arc ball is led to be made into using conductive material；

The lower portion cavity for leading arc ball and apparatus main body positioned at lowermost end forms level-one longitudinal direction recoil tube, and level-one is longitudinally anti- Washing pipe is hemi-closure space；The two adjacent apparatus main body segments led between arc ball form side recoil tube, due in apparatus main body Arc ball is led equipped with multiple, just forms multiple side recoil tubes in apparatus main body, side recoil tube is hemi-closure space；

Longitudinally recoil pipe diameter is smaller than arc diameter for level-one, when electric arc enters from below level-one is vertical to blow in recoil tube when, Electric arc is walked more inward, due to the limitation for the tube wall that recoils, density, speed, temperature rank when electric arc enters level-one longitudinal direction recoil tube Jump formula increases, and the phase step type of overpressure is caused to increase, final to generate the quick-fried effect of pressure, make electric arc blocking recoil bottom of the tube by To reversed elastic force, 180 ° of change occurs for the direction of advance of most of electric arc, and small part electric arc acts on approaching side due to Coulomb force Square recoil tube carries out recoil again and slackens arc energy.The electric arc to rebound back forms cavity since speed, density, pressure are bigger Effect acts on outer electric arc in inlet, and the electric arc at port is caused to generate truncation；It is semiclosed due to level-one longitudinal direction recoil tube Characteristic manages interior temperature moment rising, forms internal density contrast and temperature difference with outer degree, minute quantity sky in the recoil tube of level-one longitudinal direction Gas expands to form contra-injection air-flow and act on electric arc, weakens electric arc in the cavity effect that electric arc axis center forms vertical blowing gas stream Energy；Arc energy into recoil tube is bigger, and the narrow pipe perfusion effect by recoil tube is bigger, the density contrast and temperature of formation Difference is bigger, or even extinguishes electric arc；

And since multistage leads the electric conductivity of arc ball, electric arc will take advantage of a situation into the recoil tube of multistage side, repeat multistage The side recoil of recoil effect, formation acts on electric arc, realizes laterally multistage truncation；Arc energy is bigger, the density contrast of formation It is bigger with temperature difference, so that back flushing capability is stronger；Electric arc indulges the recoil effect blown and be subject in recoil tube in level-one, weakens electricity The energy of arc, the energy for making it into multistage side recoil tube are reduced, and due to the lateral Truncation of multistage side recoil tube, So that electric arc is formed multiple breakpoints, accelerates the extinguishing of electric arc；

Becket is bonded with the inner wall of apparatus main body, is fixed its position by chain-wales, is avoided the displacement in back flushing process； Ensure that electric arc can smoothly enter into apparatus main body by the metallic conductivity using becket, realizes above-mentioned counter-flush；Simultaneously Since apparatus main body exit stress is big, becket can also play the role of protective device body exit；In side recoil tube Middle design becket, it can be ensured that electric arc realizes that recoil acts in specified recoil tube passage.

" (number of patent application is arcing horn device for the theory structure of this patent and the prior art CN200810178607.3) " structure and principle, which are compared, following difference:

1) time-lag effect is not present in arc extinguishing.Since arcing horn device is to spray arc air, the mistake by lightning stroke flashover The conductive component of ion component in the gas of metal component or plasma that journey needs to melt, vaporize and generate etc., Floating state is presented in the ingredient in air, to reduce insulating capacity in air and be easy to produce electric arc displacement, and in electric arc Arc air is sprayed at displacement, thus blocks electric arc.Obviously, in arc flash-conductive material melting, vaporization-ejection electricity This process of arc jet, there are time-lag effects, i.e., arcing horn device, which exists, sprays arc air energy less than lightning stroke flashover electricity Arc energy.And effect is perfused in the narrow pipe that this patent proposes, makes full use of arc-plasma that elastic deformation, arc plasma occurs When entering recoil tube inlet, physical form changes body first, becomes superfine electric arc by thick electric arc, radial pressure turns At axial compressive force, due to narrow pipe recoil effect, in electric arc recoil, spouting velocity can be accelerated.

2) arc extinguishing threshold value is high.Due to the arc extinguishing cylinder and aerogenesis apparatus of arcing horn device be by polyamide (also known as Nylon), it can bear temperature at 500 DEG C or so, value is much smaller than electric arc calcination temperature (up to 3726.85 DEG C).So Arc extinguishing cylinder and aerogenesis apparatus are easily influenced by high temperature, and explosion is finally resulted in.And this patent proposes to use high-strength high temperature-resistant resistance to The non-conducting material of high pressure is made, such as ceramal, rare-earth ceramic, Graphene-ceramic composite material, organic ceramic, synthesis Silicon rubber, organic insulating material, glass alloy, rare earth glass, Graphene glass, organic glass, in conjunction with new material

3) there is no high-temperature bakings to produce gas mode.Since arcing horn device is to act on electricity by spraying arc air Arc, and electric arc is blown in gap.Wherein spraying arc air is that high-temperature baking is needed to produce gas, this seriously leads to gas exhausted material Loss, hence it is evident that reduce the service life of device.And this patent proposes that effect is perfused in the narrow pipe of plasma: utilizing arc-plasma Mobility becomes axial expansion in the radial displacement for entering electric arc in recoil tube；Recoil bottom of the tube is being touched by geometry bullet Property deformation, incoming flow electric arc and the pressure for going galvanic electricity arc to be formed superposition, temperature superimposition and density synergistic effect make in recoil module The very fast multiplication of pressure destroys electric arc subsequent power, blocks electric arc continuity.So there is no high-temperature bakings to produce gas mode, guarantee This patent material loss, and long service life.

Compared with prior art, the utility model have the utility model has the advantages that

1. the utility model by level-one longitudinal direction recoil tube and multistage side recoil tube to electric arc carry out recoil and Vertically and horizontally truncation combines, and electric arc can be made to form multibreak, significantly cut down arc energy, is conducive to be truncated and extinguish electric arc.

2. the utility model, which sprays nozzle by horn-like recoil, can preferably generate density contrast, temperature difference and pressure The recoil effect of difference, formation is more strong.

3. device noumenon carries out arc extinguishing using thunder and lightning self-energy in the utility model, independent of the big of power frequency energy It is small.

4. the utility model changes the temperature difference inside and outside device noumenon using heating effect of current, to generate air pressure difference Electric arc is blown out, avoids being conducive to reuse for a long time using external gas exhausted material.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment 1 in the utility model.

Fig. 2 is the structural schematic diagram of embodiment 2 in the utility model.

Appended drawing reference: 1- apparatus main body, 2- lead arc ball, 3- recoil injection nozzle, 4- becket, 5- chain-wales.

Specific embodiment

The present invention will be further described with reference to the accompanying drawing.

Embodiment 1:

A kind of multi-stag recoil electric discharge arc-extinguishing tube, the apparatus main body 1 including straight-tube shape；It is inside the apparatus main body 1 Hollow structure；It is equipped with opening in 1 bottom of apparatus main body, the bottom opening of apparatus main body constitutes bottom recoil nozzle；In Compartment of terrain is inlaid with several and leads arc ball 2 from top to bottom in the apparatus main body 1；In the two adjacent devices led between arc ball Recoil injection nozzle 3 is additionally provided on body outer surface, recoil injection nozzle 3 is connected with the internal cavities of apparatus main body 1；Two Becket 4 and chain-wales 5 are installed in the adjacent apparatus main body led between arc ball；The setting of chain-wales 5 is sprayed in recoil The top of loophole, recoil jet port include recoil injection nozzle 3 and bottom recoil nozzle；The becket 4 is mounted on small flat On platform 5, and the interior sidewall surface of apparatus main body 1 is close in the outer surface of becket 4.

The recoil injection nozzle 3 is to be obliquely installed.The arc ball 2 of leading is sphere structure.Described leads arc ball 2 etc. Spacing it is arranged in apparatus main body 1；And it recoils and sprays nozzle 3 two apparatus main bodies 1 for leading 2 middle position of arc ball are set On.Two adjacent recoil injection nozzles are arranged in the two sides of device noumenon respectively.

The working principle of the embodiment:

Apparatus main body 1 is to be made into using high-intensitive, high temperature resistant and high voltage bearing ceramic material；Arc ball 2 is led using conduction material Material is made into；The lower portion cavity for leading arc ball 2 and apparatus main body 1 positioned at lowermost end forms level-one longitudinal direction recoil tube, and level-one is longitudinal Recoil tube is hemi-closure space；Two adjacent arc balls 2 of leading form side recoil tube in apparatus main body 1, due in apparatus main body 1 Arc ball 2 is led equipped with multiple, just forms multiple side recoil tubes in apparatus main body 1, side recoil tube is hemi-closure space；Level-one Longitudinal recoil pipe diameter is smaller than arc diameter, and when electric arc enters from below in the recoil tube of level-one longitudinal direction, electric arc is walked more inward, Due to the limitation for the tube wall that recoils, electric arc is also bigger by recoil tube narrow pipe perfusion effect, density when electric arc enters recoil tube beginning, Speed, temperature jump formula increase, and the phase step type of overpressure is caused to increase, and final generate presses quick-fried effect, make electric arc in blocking By reversed elastic force, electric arc direction 180 ° of change is occurred for the bottom of the tube that recoils.The electric arc to rebound back is due to speed, density, pressure It is bigger, cavity effect is formed in inlet and acts on outer electric arc, and the electric arc at port is caused to generate truncation；At this point, level-one is longitudinal The arc density of recoil tube increases, and due to the semiclosed characteristic of level-one longitudinal direction recoil tube, manages interior temperature moment rising, is formed internal With external density contrast and temperature difference；Arc energy into recoil tube is bigger, and the narrow pipe perfusion effect by recoil tube is bigger, The density contrast and temperature difference of formation are bigger, or even extinguish electric arc；And since multistage leads the electric conductivity of arc ball 2, electric arc will be suitable Gesture enters in multistage side recoil tube, and electric arc is changed by elastic force, arc motion direction, repeats multistage recoil effect, formation Side recoil acts on electric arc, realizes laterally multistage truncation；Arc energy is bigger, and the density contrast and temperature difference of formation are bigger, So that back flushing capability is stronger；Electric arc is acted in the vertical cavity effect being subject in recoil tube of blowing of level-one, is weakened the energy of electric arc, is made Its energy for entering multistage side recoil tube is reduced, and due to the lateral Truncation of multistage side recoil tube, forms electric arc Multiple breakpoints accelerate the extinguishing of electric arc；Becket 4 is bonded with the inner wall of apparatus main body 1, is fixed its position by chain-wales 5, is kept away Exempt from the displacement in back flushing process；Ensure that electric arc can smoothly enter into apparatus main body 1 by the metallic conductivity using becket 4, Realize above-mentioned counter-flush；Simultaneously because 1 exit stress of apparatus main body is big, becket 4 can also play protective device main body 1 The effect of outlet；Becket 4 is designed in the recoil tube of side, it can be ensured that electric arc realizes recoil in specified recoil tube passage Effect.

Embodiment 2:

The present embodiment and the difference of embodiment 1 are only that: recoil injection nozzle 3 is in horn-like structure.

Loudspeaker are open outwardly, and horn-like recoil injection nozzle 3 can increase apparatus main body 1 and manage the interior density with outside pipe Difference, temperature difference and pressure difference keep recoil jet-action more strong, and arc quenching effect becomes apparent.

Obviously, above-described embodiment illustrates examples for clearly illustrating the present invention just for the sake of clear, and not to implementation Restriction.For the those of ordinary skill in the field, other not similar shapes can also be made on the basis of the above description The variation or variation of formula.There is no need and unable to all embodiment party's formulas with exhaustion.And it thus amplifies out aobvious and easy The variation seen changes among still in the protection scope of the utility model.

Claims (4)

1. a kind of multi-stag recoil electric discharge arc-extinguishing tube, the apparatus main body (1) including straight-tube shape；It is characterized by: the device It is hollow structure inside main body (1)；Opening is equipped in apparatus main body (1) bottom；In the apparatus main body (1) certainly Upper and lower compartment of terrain is inlaid with several and leads arc ball (2)；

Recoil injection nozzle (3) is additionally provided on the two adjacent apparatus main body outer surfaces led between arc ball；

Becket (4) and chain-wales (5) are installed in the two adjacent apparatus main bodies led between arc ball；The chain-wales (5) top of recoil jet port is set；The becket (4) is mounted on chain-wales (5), and becket (4) is outer It is close to the interior sidewall surface of apparatus main body (1) in surface.

2. multi-stag recoil electric discharge arc-extinguishing tube according to claim 1, it is characterised in that: nozzle is sprayed in the recoil (3) nozzle (3) are sprayed in horn-like structure to be obliquely installed, and recoiling.

3. multi-stag according to claim 1 recoil electric discharge arc-extinguishing tube, it is characterised in that: described to lead between arc ball (2) etc. Away from ground setting in apparatus main body (1)；And recoil injection nozzle (3), which is arranged, leads arc ball (2) middle position two Apparatus main body (1) on.

4. multi-stag recoil electric discharge arc-extinguishing tube according to claim 1, it is characterised in that: nozzle is sprayed in two adjacent recoils It is arranged in the two sides of device noumenon respectively.