CN214706581U - Electric arc suppression device is built to liquid electric wire detonation wave - Google Patents
Electric arc suppression device is built to liquid electric wire detonation wave Download PDFInfo
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- CN214706581U CN214706581U CN202120852101.7U CN202120852101U CN214706581U CN 214706581 U CN214706581 U CN 214706581U CN 202120852101 U CN202120852101 U CN 202120852101U CN 214706581 U CN214706581 U CN 214706581U
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Abstract
The utility model discloses an arc suppression device is built to liquid electric wire detonation wave belongs to power transmission and distribution overhead line arc extinguishing lightning protection technical field, including the striking pole, the storage box, the carousel, the insulating box casing, baffle and arc extinguishing section of thick bamboo, the insulating box casing sets up the bottom at the storage box, the carousel sets up in the insulating box casing, the one end of striking pole penetrates to set up in the insulating box casing, the other end is connected with the gold utensil, be provided with on the storage box and fall the material mouth, be provided with a plurality of card silo on the carousel, be provided with liquid phase detonation glass pipe in the card silo, the baffle sets up the inside at the insulating box casing, transversely sets up the front end at the carousel to transversely block the bottom of liquid phase detonation glass pipe, the arc extinguishing section of thick bamboo sets up the bottom at the baffle. The pressure generated by explosion is controlled within a certain range to avoid damaging the insulating shell of the device, the switching mechanism and the sealing structure are skillfully integrated, the lightning protection and arc extinguishing capabilities are enhanced, the acting force of the backflushing airflow on electric arcs is improved, the airflow can be directionally sprayed out, and the arc extinguishing capabilities are improved.
Description
Technical Field
The utility model relates to a power transmission and distribution overhead line arc extinguishing lightning protection technical field especially relates to an arc suppression device is built to liquid electric wire detonation wave.
Background
The parallel gap has been widely used in various voltage class lines due to its simple structure, convenient installation and low price. However, the parallel gap has weak self-arc-quenching capability, and when the line is struck by lightning, stable power-frequency follow current electric arc is easy to appear after the parallel gap is subjected to impulse flashover, so that the line is frequently tripped, and the application of the line is limited.
The increase of the lightning trip-out rate leads the circuit breaker to have shortened service life because of frequent load cutting off of short-circuit arcs. In addition, the long-time power frequency arc burning can cause accidents such as insulator damage and wire breakage. In order to extinguish electric arcs, reduce the magnitude of lightning current and ensure the operation safety of a power transmission line, liquid recoil arc extinguishing devices are generally adopted to extinguish the arcs, but the liquid recoil arc extinguishing devices have the problems of air tightness and difficulty in supplementing liquid, so that the method for suppressing the detonation wave of the liquid electric metal wire is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an arc suppression device is built to liquid electricity wire detonation wave, the difficult control of liquid content in solving liquid recoil device, and the relatively poor technical problem of gas tightness.
The utility model provides an arc suppression device is built to liquid electricity wire detonation wave, including the striking pole, the storage box, the carousel, the insulating box casing, baffle and arc extinguishing section of thick bamboo, the insulating box casing sets up the bottom at the storage box, the carousel sets up in the insulating box casing, the one end of striking pole penetrates to set up in the insulating box casing, the other end is connected with the gold utensil, be provided with the material mouth that falls on the storage box, be provided with a plurality of card silo on the carousel, card silo is provided with liquid phase detonation glass pipe, the baffle sets up the inside at the insulating box casing, transversely set up the front end at the carousel, and transversely block the bottom of liquid phase detonation glass pipe, the arc extinguishing section of thick bamboo sets up the bottom at the baffle.
Furthermore, the liquid phase detonation glass tube comprises an upper end electrode, a metal wire, a glass tube and a lower electrode, wherein the glass tube is filled with insulating liquid, the metal wire is arranged in the glass tube, and the upper end electrode and the lower electrode are respectively arranged at two ends of the glass tube and connected with the metal wire.
Furthermore, the width of the upper end electrode and the lower electrode is smaller than that of the glass tube, and the width of the upper end electrode and the lower electrode is smaller than that of the front end opening of the material clamping groove.
Furthermore, a compression spring and a plurality of liquid-phase detonation glass tubes are arranged in the storage box, the plurality of liquid-phase detonation glass tubes are transversely arranged in a row, one end of the compression spring is arranged on the inner wall of the storage box, and the other end of the compression spring extrudes the liquid-phase detonation glass tubes.
Further, the top of card silo is provided with the sealing washer, and the carousel uses insulating material to make, and the baffle is the insulation board.
Furthermore, the metal wire is made of a low-melting-point metal material, the hardware is arranged at the upper end of the storage box, and the storage box is made of an insulating material.
The utility model adopts the above technical scheme, the utility model discloses following technological effect has:
the utility model discloses can avoid causing the damage to device insulation cover in certain extent with the pressure control that the explosion produced, will switch over mechanism and seal structure ingeniously to close as an organic whole, reinforcing lightning protection arc extinguishing ability, improve the effort of recoil air current to electric arc, make the air current can directional blowout, improved arc extinguishing ability, improved the arc extinguishing effect, it is early to cut off the electric arc, recoil arc extinguishing pressure peak value is synchronous with the big steepness electric arc of impact prefuncture time, impact electric arc is cut off immediately just when forming, the pressure of cutting off electric arc is huge, arc extinguishing pressure reaches 100 atmospheric pressures, so big pressure peak value time appears in the impact prefuncture in the twinkling of an eye, pressure duration is of a specified duration, the liquid bubble and the thermal evaporation effect storage a large amount of kinetic energy of electric arc thermogenesis of electric arc heat, can release arc extinguishing pressure lastingly, impact electric arc restrike is reignited and is postponed, lasting huge recoil pressure has destroyed continuous discharge condition and reignition condition, after the impact arc is cut off, the re-burning breakdown time is greatly delayed by more than ten to dozens of microseconds, the gradient of lightning current is obviously reduced by 90 percent, the amplitude of the current is attenuated by more than 50 percent, and the superposition and complementation of various arc extinguishing mechanisms of liquid back-flushing, namely the early and strong characteristic that the arc extinguishing pressure appears under the hydro-electric effect generated by the sudden impact arc
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a schematic view of the turntable structure of the present invention.
Fig. 3 is a structural diagram of the liquid phase detonation glass tube of the present invention.
Reference numbers in the figures: 1-hardware fitting; 2-an arc striking rod; 3-a material storage box; 4-compression spring; 5-liquid phase detonation glass tube; 6-discharging port; 7-sealing ring; 8-rotating disc; 9-clamping groove; 10-an insulating case housing; 11-a baffle plate; 12-arc extinguishing cylinder; 13-upper electrode; 14-a wire; 15-a glass tube; 16-lower electrode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, preferred embodiments are described in detail. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
The utility model provides an arc suppression device is built to liquid electric wire detonation wave, as shown in fig. 1-2, including striking rod 2, storage tank 3, carousel 8, insulating case casing 10, baffle 11 and arc extinguishing cylinder 12, insulating case casing 10 sets up the bottom at storage tank 3, carousel 8 sets up in insulating case casing 10, the one end of striking rod 2 penetrates the setting in insulating case casing 10, the other end is connected with gold utensil 1, be provided with on the storage tank 3 and fall material mouth 6, be provided with a plurality of card silo 9 on the carousel 8, be provided with liquid phase detonation glass pipe 5 in the card silo 9, baffle 11 sets up the inside at insulating case casing 10, transversely set up the front end at carousel 8, and transversely block the bottom of liquid phase detonation glass pipe 5, arc extinguishing cylinder 12 sets up the bottom at baffle 11.
When electric arc enters the liquid phase detonation unit, the metal wire rapidly changes phase under the action of joule heat, and then undergoes solid state, liquid state, gas state and plasma state to finally develop into a plasma channel, explodes and generates strong airflow; the strong air flow is sprayed out from the arc extinguishing cylinder, acts on the electric arc in the arc extinguishing cylinder and cuts off the electric arc, and an arc building channel is cut off.
After the liquid phase detonation glass tube explodes, the glass tube, the conductive electrode and the liquid are all sprayed out of the insulating clamping groove, the liquid phase detonation unit rotates to the position of the supplementary glass tube under the action of the rotary disc (the spiral spring is tightly wound in the rotary disc), and the liquid phase detonation glass tube falls into the liquid phase detonation unit from the rightmost side under the thrust action of the spring. And simultaneously the other detonation unit to be liquid phase is rotated to the triggering position.
The residual arc is grounded through the arc striking rod. The hardware fitting is used for fixing the device on a transmission tower. The rubber ring prevents strong airflow from leaking, and can ensure that the generated strong airflow acts on the electric arc to the maximum.
In the embodiment of the present invention, as shown in fig. 3, the liquid phase detonation glass tube 5 includes an upper electrode 13, a metal wire 14, a glass tube 15 and a lower electrode 16, the glass tube 15 is filled with insulating liquid, the metal wire 14 is disposed in the glass tube 15, and the upper electrode 13 and the lower electrode 16 are disposed at two ends of the glass tube 15 respectively and connected to the metal wire 14. The width of the upper electrode 13 and the lower electrode 16 is smaller than that of the glass tube 15, and the width of the upper electrode 13 and the lower electrode 16 is smaller than that of the front opening of the material clamping groove 9.
The metal wire electric explosion generates shock waves: pulse current is injected into the metal wire, the metal wire rapidly changes phase under the action of Joule heating, and the metal wire is subjected to solid state, liquid state, gas state and plasma state in sequence to finally develop and form a plasma channel, the whole electric explosion process can generate light radiation, and simultaneously a plurality of shock waves with different strengths and a certain sequence on time and space are ejected from the lower end of the insulation clamping groove.
Wire liquid phase discharges are more rapid than water gap breakdown: the metal wire is preset between the two electrodes in the gap when the metal wire in the liquid explodes, an initial channel can be provided for discharge current, discharge time delay and jitter are eliminated (the shock wave time delay is controllable), pre-breakdown energy loss is reduced, reliability, stability and consistency of discharge/shock waves are improved, and the shock wave energy conversion efficiency is improved by 24%.
The traditional water gap is subjected to the initial-forming-development process of a discharge channel, then main discharge occurs, the metal wire discharge does not have the process, the discharge channel is formed in the metal wire and explosion products thereof, and the conductivity is correspondingly changed rapidly.
The copper wire generates the strongest shock wave: the deposition energy of a metal wire made of low-melting-point metal (Al, Cu, Ag, Pt and the like) before a voltage peak is more than 2 times of the atomization enthalpy of the metal wire, and the metal wire can generally generate stronger shock waves, wherein the copper wire can generate the strongest shock waves. The mutability, rapidity, stability and reliability of the copper filament in the glass tube for converting the electric arc further strengthen the intensity of the liquid-electricity reaction, so that the liquid-electricity 'detonation' effect is larger.
Switching the liquid phase detonation unit: when the liquid phase detonation unit is not triggered, the liquid phase detonation unit is clamped by the baffle. After electric arc enters the liquid phase detonation unit to explode, the glass tube, the conductive electrode and liquid are all sprayed out of the insulating clamping groove, and rotate to the position of the supplementary glass tube under the action of the turntable, and the liquid phase detonation glass tube falls into the liquid phase detonation unit from the rightmost side under the thrust action of the spring. And simultaneously the other detonation unit to be liquid phase is rotated to the triggering position.
The embodiment of the utility model provides an in, be provided with compression spring 4 and a plurality of liquid phase detonation glass pipe 5 in the stock bin 3, a plurality of liquid phase detonation glass pipe 5 transversely sets up to one row, and 4 one ends of compression spring set up at the inner wall of stock bin 3, and other end extrusion liquid phase detonation glass pipe 5 sets up. The top of card silo 9 is provided with sealing washer 7, and carousel 8 uses insulating material to make, and baffle 11 is the insulation board. The metal wire 14 is made of a low-melting-point metal material, the metal fittings 1 are arranged at the upper end of the storage box 3, and the storage box 3 is made of an insulating material.
When electric arc forms flashover to the striking rod 2 through the low end of the liquid phase detonation glass tube 5, electric arc is conducted in the liquid phase detonation glass tube 5, the metal wire electric explosion effect, the liquid electric explosion effect and the electric-hydraulic heat exchange effect generate shock waves to extinguish the electric arc, the glass layer of the liquid phase detonation glass tube 5 is broken and drops, the rotary disc 8 rotates to the new liquid phase detonation glass tube 5 to extinguish the electric arc, and the arc is extinguished until the electric arc is extinguished, so that the arc extinction is completed.
The specific process of the metal wire electric explosion effect is as follows: pulse current is injected into the metal wire, the metal wire rapidly changes phase under the action of Joule heating, and the metal wire is subjected to solid state, liquid state, gas state and plasma state in sequence to finally develop and form a plasma channel, the whole electric explosion process can generate light radiation, and simultaneously a plurality of shock waves with different strengths and a certain sequence on time and space are ejected from the lower end of the insulation clamping groove.
The specific process of the liquid electric detonation effect is as follows: as the impact time of the lightning arc is extremely short, the liquid cannot instantaneously deform and displace, the peak value of the recoil arc extinguishing pressure is synchronous with the pre-breakdown time of the impact steepness electric arc, the impact electric arc is immediately cut off when being formed, the electric arc in the liquid-phase detonation glass tube (5) generates the phenomenon of discharging in the liquid, and the temperature of the discharging electric arc in the liquid instantaneously reaches 10 DEG C4K or more, the arc undergoes a momentary expansion due to the temperature gradient difference, due to the arc 104The temperature above K appears instantaneously, the liquid wrapped around the arc has no time to displace and thermally evaporate, the liquid is in a rigid solid state and wraps the arc to prevent the arc from expanding, the liquid is regarded as a shock wave transmission medium which can not be compressed, the liquid can synchronously generate pressure above 100Mpa under the hammering action of the arc, the arc current value is small, the arc voltage drop is large, the energy accumulated in the arc is equal to the integral of the product of the arc voltage and the arc current, the temperature of the arc depends on the arc energy, the peak value of the arc energy appears at the moment when the arc is switched on, the arc voltage drop is reduced to be regarded as a 0 value along with the increase of the arc current, the product of the current and the arc voltage drop is also regarded as 0, the energy after the integral is reduced, the arc expansion pressure born by the liquid depends on the arc temperature determined by the arc energy, and the pressure reaches the peak value at the moment when the arc is switched on, the 'rigid' wrapping of the liquid to the arc converts the expansion force generated by the arc temperature instantaneously into a pressure shock wave, the only release outlet of the shock wave is the arc inlet, and at the momentThe electric arc wrapped by liquid in the whole cavity suddenly expands instantly, an electric arc detonation effect occurs, peak pressure shock waves of more than 100Mpa are synchronously generated and are ejected from an outlet in the cavity, when pressure waves are released from the outlet of the cavity, a piston of mechanical pressure waves pushes the electric arc out of the cavity to cut off the electric arc in the cavity, meanwhile, the inertia of the pressure waves ejected out of the cavity cuts off the electric arc outside the cavity, the size of cutting off the electric arc is large, the impact electric arc applied to a recoil pipe through the recoil pressure release is cut off, and an arc building channel is cut off.
The specific process of the electro-hydraulic heat exchange effect is as follows: the electric arc is connected to the electric arc and the electric arc is connected to the electric arc, the electric arc detonation effect can be generated at the moment, the pressure peak value is generated at the moment when the electric arc is connected to the electric arc, the electric arc ionization degree is increased, the electric arc current is increased, the electric arc voltage drop is reduced to the level which is regarded as 0, the electric arc energy is reduced, the pressure generated by the electric arc detonation effect is reduced, but the heat exchange between the electric arc and the liquid occurs, the electric arc is gasified to generate steam through the gasified liquid, the electric arc heat is taken away, the electric arc ionization degree is attenuated, the electric arc intensity is weakened, meanwhile, the steam can generate expansion pressure to compensate the pressure attenuation of the electric liquid detonation, the heat exchange pressure is maintained for a longer time than the electric liquid detonation effect, and the electric arc is inhibited and cut off again.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides an arc suppression device is built to liquid electric wire detonation wave which characterized in that: the explosion-proof box comprises an arc striking rod (2), a storage box (3), a rotary table (8), an insulating box shell (10), a baffle plate (11) and an arc extinguishing cylinder (12), the insulating box shell (10) is arranged at the bottom of the storage box (3), the rotary table (8) is arranged in the insulating box shell (10), one end of the arc striking rod (2) penetrates into the insulating box shell (10), the other end of the arc striking rod is connected with a fitting (1), a material dropping opening (6) is formed in the storage box (3), a plurality of material clamping grooves (9) are formed in the rotary table (8), liquid-phase explosion glass tubes (5) are arranged in the material clamping grooves (9), the baffle plate (11) is arranged inside the insulating box shell (10), the baffle plate is transversely arranged at the front end of the rotary table (8), the bottom of the liquid-phase explosion glass tubes (5) is transversely clamped, and the arc extinguishing cylinder (12) is arranged at the bottom of the baffle plate (11).
2. The apparatus according to claim 1, wherein: the liquid-phase detonation glass tube (5) comprises an upper end electrode (13), a metal wire (14), a glass tube (15) and a lower electrode (16), wherein the glass tube (15) is filled with insulating liquid, the metal wire (14) is arranged in the glass tube (15), and the upper end electrode (13) and the lower electrode (16) are respectively arranged at two ends of the glass tube (15) and are connected with the metal wire (14).
3. The apparatus according to claim 2, wherein: the width of the upper electrode (13) and the lower electrode (16) is smaller than that of the glass tube (15), and the width of the upper electrode (13) and the lower electrode (16) is smaller than that of the front end opening of the material clamping groove (9).
4. The apparatus according to claim 1, wherein: be provided with compression spring (4) and a plurality of liquid phase detonation glass pipe (5) in bin (3), a plurality of liquid phase detonation glass pipe (5) transversely set up to one row, and compression spring (4) one end sets up at the inner wall of bin (3), and other end extrusion liquid phase detonation glass pipe (5) set up.
5. The detonation wave arc-building suppression device for the hydro-electric wire according to claim 4, wherein: the top of card silo (9) is provided with sealing washer (7), and carousel (8) use insulating material to make, and baffle (11) are the insulation board.
6. The apparatus according to claim 2, wherein: the metal wire (14) is made of low-melting-point metal materials, the metal fitting (1) is arranged at the upper end of the storage box (3), and the storage box (3) is made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120852101.7U CN214706581U (en) | 2021-04-23 | 2021-04-23 | Electric arc suppression device is built to liquid electric wire detonation wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120852101.7U CN214706581U (en) | 2021-04-23 | 2021-04-23 | Electric arc suppression device is built to liquid electric wire detonation wave |
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| Publication Number | Publication Date |
|---|---|
| CN214706581U true CN214706581U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120852101.7U Active CN214706581U (en) | 2021-04-23 | 2021-04-23 | Electric arc suppression device is built to liquid electric wire detonation wave |
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| CN (1) | CN214706581U (en) |
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- 2021-04-23 CN CN202120852101.7U patent/CN214706581U/en active Active
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