CN112117653A - Low-voltage system multistage recoil arc-extinguishing device and method - Google Patents
Low-voltage system multistage recoil arc-extinguishing device and method Download PDFInfo
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- CN112117653A CN112117653A CN202010166567.1A CN202010166567A CN112117653A CN 112117653 A CN112117653 A CN 112117653A CN 202010166567 A CN202010166567 A CN 202010166567A CN 112117653 A CN112117653 A CN 112117653A
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- recoil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
Abstract
The invention discloses a multistage recoil arc extinguishing device and method for a low-voltage system, and belongs to the technical field of lightning protection of the low-voltage system. The arc path of the invention is strictly controlled, the arc striking devices, namely the arc striking electrode ring and the arc striking conducting wire, are arranged between the back-flushing pipes, the pipe orifice of the first-stage back-flushing pipe is also provided with the arc striking device, the arc path is firmly controlled, the multistage back-flushing arc extinguishing method extinguishes the arc by means of the self energy of the flashover arc, the flashover of the arc is accompanied with the back-flushing arc extinguishing, the device acts quickly, and the arc extinguishing time is extremely short.
Description
Technical Field
The invention relates to the technical field of lightning protection of low-voltage systems, in particular to a multistage recoil arc-extinguishing device and method for a low-voltage system.
Background
With the further development of the modern power industry and the further improvement of the requirements of the user power supply service, higher requirements are also put forward on the technical levels of safety, reliability, intelligent automation and the like of the operation of the low-voltage side (220V and 380V) distribution switchgear. In low voltage distribution system, distribution equipment's overvoltage fault is comparatively common, mainly shows in the aspect of atmosphere overvoltage (thunder and lightning) and operation overvoltage, can cause distribution equipment to take place to burn and lose, impact destruction etc. directly influences the fail safe nature of distribution equipment power supply and user's power consumption.
The low-voltage system switch cabinet has the advantages of small occupied area, simplicity in operation, high safety and reliability and the like, can be installed at a user side to be used as a terminal control switch, and is preferably used in the low-voltage system planning design. The switch in the power distribution system needs to frequently cut off resistive, capacitive or inductive loads such as various power distribution networks, capacitors, motors and the like. The overvoltage causes a slight heating, which is mainly caused by overcurrent, poor contact and eddy currents. The main hazard of overvoltage is to destroy the insulation performance of the system switch cabinet and cause short circuit.
During operation, the switchgear has a problem of reignition on the load side and on the power supply side of the distribution network, which presents high-frequency oscillations whose frequency depends mainly on the electrical characteristics and length of the connecting cable itself, and whose repeated impacts, even if not too great in amplitude, are harmful to the substations, switchgears, etc. Although MOA zinc oxide arresters, surge protectors, can limit the magnitude of the overvoltage well, they do not achieve the effect of limiting the frequency of the reignition overvoltage. In the process of cutting off inductive loads such as shunt reactors, high-voltage motors and the like in a power distribution network system, because the reactors and the high-voltage motors are typical pure inductive loads and the inductive quantity is usually large, cut-off overvoltage with high amplitude can be generated in the operation process. Since the MOA zinc oxide arrester and the surge protector can only suppress the amplitude of overvoltage and cannot suppress the reignition frequency and the rising speed of transient recovery voltage between fractures, the effect of suppressing the reignition high-frequency overvoltage generated by the switching operation is not very ideal.
Disclosure of Invention
The invention aims to provide a multistage recoil arc-extinguishing device and method for a low-voltage system, which solve the technical problem of restriking high-frequency overvoltage generated by the operation of the existing suppression switch.
The utility model provides a multistage recoil arc control device of low pressure system, two and more than two recoil pipes, fill insulating filler material between the recoil pipe, electrical connection between recoil pipe and the recoil pipe, the recoil pipe sets up to one end opening, the other end confined cavity pipeline structure.
Furthermore, the recoil pipe comprises an arc striking electrode, a recoil pipe wall and a lightning receiving electrode, the lightning receiving electrode is arranged at one end of the recoil pipe wall in a sealing mode, and the arc striking electrode is arranged at the other end of the recoil pipe wall.
Furthermore, a lightning receiving lead is arranged between the recoil pipe and the recoil pipe for electrical connection, one end of the lightning receiving lead is connected with a lightning receiving electrode of one recoil pipe, and the other end of the lightning receiving lead is connected with an arc striking electrode of the other recoil pipe.
Furthermore, set up electrically conductive platform electrical connection between recoil pipe and the recoil pipe, electrically conductive platform includes connects dodging the leading circle and electrically conducts the bridge plate, connect and dodge the leading circle and set up in the recoil pipe, connect and dodge the leading circle and pass through electrically conductive bridge plate with connecing and dodge the leading circle and be connected.
Furthermore, the invention also comprises an arc striking device, wherein the arc striking device comprises an arc striking rod and an arc striking lead, and the arc striking rod is arranged on the insulating filling material and is connected with an arc striking electrode of one of the recoil pipes through the arc striking lead.
Furthermore, the recoil pipe is vertically arranged in the insulating filling material, and the recoil pipe are arranged in the insulating filling material in a forward and reverse direction.
Furthermore, the back-flushing pipes are obliquely arranged in the insulating filling material, the back-flushing pipes and the back-flushing pipes are sequentially arranged in a zigzag mode, and the included angle between every two adjacent back-flushing pipes is 30-60 degrees.
A low-voltage system multi-stage recoil arc extinguishing method comprises the following steps:
step 1: when the high-frequency oscillation reignition electric arc occurs at the load side or the power supply side of the power distribution network, the arc striking device pulls the electric arc to enter a first recoil pipe through coulomb force or physical touch;
step 2: after the flashover arc enters the recoil pipe, the arc is elastically deformed, the power of the arc is increased, the temperature is increased, and the heat in the recoil pipe is increased;
and step 3: the pressure difference between the back flushing pipe and the outside is increased, when the pressure in the back flushing pipe is greater than the pressure outside the pipe, the directional arc explosion effect from inside to outside is generated, and the explosion effect causes the discharge of electric arcs: on the one hand, the arc in the tube is rapidly evacuated; on the other hand, the outer arc cavity effect blocks the injection of the energy of the outer arc;
and 4, step 4: and a lightning receiving lead is arranged on a lightning receiving electrode of the back flushing pipe and is connected with an arc striking electrode of the next back flushing pipe, the residual electric arc in the previous back flushing pipe sequentially passes through the lightning receiving lead and the arc striking electrode of the next back flushing pipe to enter the next back flushing pipe, and the electric arc is finally completely extinguished.
Further, the arc striking device in the step 1 comprises an arc striking rod and an arc striking lead, wherein the arc striking rod is arranged on the insulating filling material and is connected with an arc striking electrode of one of the recoil pipes through the arc striking lead.
Further, the pipe wall of the recoil pipe in the step 1 is made of a high-strength, high-temperature-resistant and high-pressure-resistant non-conductive material, the arc striking component is set to be a conductive metal ring, the outer side wall of the conductive metal ring is tightly attached to the inner wall of the recoil pipe, and the lightning receiving component is made of a conductive material.
The single recoil pipe is of a semi-closed structure with one end open and the other end closed, and the closed end is fixedly plugged by adopting a metal electrode. In order to ensure that the electric arc can completely enter the backflushing pipe, an arc striking device can be additionally arranged at the inlet of the backflushing pipe. A plurality of recoil pipes are connected end to form a multi-stage recoil arc extinguishing structure, the connection position is an electric arc nozzle, and the connection mode can be vertical recoil or zigzag recoil. In order to ensure that the electric arc can develop according to a set path, an arc striking device is adopted between two adjacent recoil pipes to realize electric connection.
The vertical recoil structure is mainly formed by sequentially arranging a plurality of recoil pipes in a forward and reverse direction, the vertical recoil pipe structure can be packaged in a cylindrical or other solid insulating material, in order to avoid electric arc flashover along the surface, a skirt edge is additionally arranged on the side surface of the cylindrical material, and the arc-climbing distance is increased. In order to make the electric arc smoothly enter the first-stage back-flushing pipe, an arc striking device is additionally arranged near the pipe orifice of the first-stage back-flushing pipe, and the arc striking device mainly comprises an arc striking rod, a lead and an arc striking electrode. And arc striking electrodes are adopted between two adjacent stages of recoil pipes to realize electrical connection.
The other structure of the vertical recoil is that a small platform made of metal is arranged between two adjacent recoil units, the small platform has a certain thickness, and the left side and the right side of the small platform are respectively provided with a through hole with the same inner diameter as that of the recoil pipe. The four back-flushing pipes are respectively arranged above and below two holes of the small platform, one back-flushing unit consists of two back-flushing pipes, and the periphery of the back-flushing unit is filled and fixed by high-strength insulating materials. In each backflushing unit, the backflushing pipe at the opening end of the backflushing unit is not provided with a lightning receiving electrode, and the inside of the backflushing pipe is hollow and straight. The recoil pipe material is ceramic or other high-strength high-temperature-resistant insulating materials. The small platform has the function that electric arcs can develop among the vertical recoil units, and multiple multistage arc extinction is achieved. The whole shape can also be cylindrical or other columns, and the skirt is also arranged on the side surface.
The multistage backflushing structure is mainly characterized in that a plurality of backflushing pipes are sequentially arranged in a zigzag mode, two adjacent backflushing pipes form a backflushing unit, and the zigzag included angle range of the backflushing unit can be 30-60 degrees. In order to restrict and control the electric arc and make the electric arc develop according to a set path, metal leads are arranged at the joints of the back flushing pipes. The arrangement of the multi-stage back flushing pipes can be in an N shape or a W shape. The multistage recoil structure is packaged in a cylindrical insulating material, the arc nozzles are positioned on the upper surface and the lower surface of the cylinder, and the side surface of the cylinder is additionally provided with a skirt edge.
The basic principle of the invention is as follows:
1. elastic deformation occurs in the recoil pipe, when the arc plasma enters the inlet of the recoil pipe, the physical shape is changed firstly, the coarse arc is changed into the superfine arc, the radial pressure is converted into the axial pressure, and the ejection speed is accelerated during the arc recoil due to the narrow pipe recoil effect.
2. The arc temperature rise effect is exacerbated. After the electric arc is thinned, the cross-sectional area of the electric arc is reduced according to the formula
The arc resistance will rise substantially. Because the lightning arc often serves as a constant current source in practical experience work, according to the formula W ═ I2Xrat indicates that although the impact time is only a few microseconds, the overall energy is increased and the tube is recoiledThe packing temperature will increase.
3. The pressure explosion effect increases sharply. When the temperature is gradually increased, the accumulation of the electric arc is increased, the pressure explosion effect is further aggravated, and the electric arc spraying strength is larger.
By adopting the technical scheme, the invention has the following technical effects:
the arc path of the invention is strictly controlled, the arc striking devices, namely the arc striking electrode ring and the arc striking conducting wire, are arranged between the back-flushing pipes, the pipe orifice of the first-stage back-flushing pipe is also provided with the arc striking device, the arc path is firmly controlled, the multistage back-flushing arc extinguishing method extinguishes the arc by means of the self energy of the flashover arc, the flashover of the arc is accompanied with the back-flushing arc extinguishing, the device acts quickly, and the arc extinguishing time is extremely short.
Drawings
Fig. 1 is a cross-sectional view of a first opposed structure.
Fig. 2 is a top view of a conductive platform structure.
Fig. 3 is a cross-sectional view of a second opposed structure.
Fig. 4 is a top view of the hedging structure.
Fig. 5 is a configuration diagram of a multi-pipe recoil unit.
FIG. 6 is a view showing the structure of a first multi-pipe recoil.
FIG. 7 is a diagram of a second multi-tube recoil structure.
FIG. 8 is a cross-sectional view of a recoil tube of the present invention.
Fig. 9 is a schematic view of the recoil tube of the present invention.
FIG. 10 is a flow chart of the backflushing of the present invention.
Description of the drawings: 1-an arc striking rod; 2-arc-striking conducting wire; 3-arc striking electrode; 4-backflushing the pipe wall; 5-lightning electrodes; 6-insulating filling material; 7-a conductive platform; 7.1-lightning-receiving guide ring; 7.2-conductive bridge plate; 8-skirt edge; 9-lightning conductor; 10-backflushing the pipe hole; 11-arc entrance; 12-arc spout.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments are given and the present invention is described in further detail. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1:
as shown in fig. 1, the multistage back-flushing arc extinguishing device for the low-voltage system of the invention comprises two or more back-flushing pipes, wherein an insulating filling material 6 is filled between the back-flushing pipes, the back-flushing pipes are electrically connected with the back-flushing pipes, and the back-flushing pipes are of a hollow pipeline structure with an open end and a closed end. The electric arc enters from one recoil pipe, then is recoiled and then is transmitted to the next recoil pipe for recoiling, so that the electric arc is reduced by the step-by-step recoiling, and finally the electric arc is extinguished.
Example 2:
in this embodiment, as shown in fig. 8 to 9, the recoil pipe includes an arc ignition electrode 3, a recoil pipe wall 4 and a lightning receiving electrode 5, the lightning receiving electrode 5 is disposed at one end of the recoil pipe wall 4 and is sealed, and the arc ignition electrode 3 is disposed in the other end of the recoil pipe wall 4. The recoil pipe wall 4 of the recoil pipe is made of a high-strength high-temperature-resistant high-pressure-resistant non-conductive material, the arc striking component is a conductive metal ring, the outer side wall of the conductive metal ring is tightly attached to the inner wall of the recoil pipe, and the lightning receiving component is made of a conductive material. The high-strength, high-temperature-resistant and high-pressure-resistant non-conductive material is made of any one of alloy ceramic, rare earth ceramic, graphene-ceramic composite material, organic ceramic, synthetic silicone rubber, organic insulating material, alloy glass, rare earth glass, graphene glass and organic glass, and the inner diameter of the recoil pipe is 2.5-10 mm.
As shown in FIG. 9, the outer arc may be defined to have a velocity at the inlet v0, a pressure p0, a density ρ 0, and a temperature T0. After the outer arc enters the recoil assembly, an inlet arc velocity v1, a pressure p1, a density ρ 1 and a temperature T1 are formed. After passing through the arc striking assembly, the outlet arc speed v2 is p2, the pressure is p2, and the temperature is T2. The outer arc enters the recoil assembly through the inlet to form an inner arc, the inner arc is limited by the recoil assembly wall, the diameter is mechanically compressed by a large scale, and the temperature, the density, the pressure and the speed of the inner arc are all increased. Regardless of the arc energy loss and friction effects, when the inlet arc passes through the lightning strike assembly to achieve a resilient impact moment, v1 is considered to be-v 2, i.e., the inlet arc velocity is equal in magnitude and opposite in direction to the outlet velocity. Considering the energy loss and friction of the arc, after the inlet arc collides with the lightning receiving assembly, it is considered that | v2 | v1 | that the outlet velocity is smaller than the inlet velocity and the direction is opposite. The outlet arc is impeded by the inlet arc, which is smaller in diameter than the inlet arc, so that the outlet arc has a greater density, temperature and pressure than the inlet arc, i.e. ρ 2 > ρ 1, T2 > T1, p2 > p1, which in combination accelerate v2 more than v1, i.e. a2 > a 1. As the outlet arc diameter is increasingly compressed, resulting in an increase in outlet arc density, temperature and pressure, v2 > v1 eventually causes the outlet arc to rush out of the recoil assembly from the inlet. After the electric arc at the outlet rushes out of the recoil component, a cavity effect is formed on the external electric arc, the continuity of the electric arc is damaged, the energy of the electric arc is weakened, and the cutting and extinguishing of the electric arc are accelerated.
Considering that air exists in the recoil assembly, after the electric arc enters the recoil assembly, a series of effects and mechanisms are formed, so that the air in the recoil assembly is compressed, the air pressure in the recoil assembly is increased, the free stroke length of the electron is reduced, the ionization process is weakened and inhibited, the electric insulation strength is obviously improved, and the electric arc is favorably cut off and extinguished. According to experimental data, when air is compressed from 0.1Mpa (1atm) to 2.8Mpa, the breakdown voltage of the compressed air can be increased to 9-12 times of the standard air breakdown voltage (30kV/cm), and the electrical insulation strength is greatly improved. The original air in the recoil component is influenced by the temperature rise effect and the pressure rise effect in the recoil component, the generated jet air flow is jetted from the recoil component and acts on the outer electric arc, and the convection, radiation and conduction of the outer electric arc are accelerated by utilizing the cavity effect of the air flow on the outer electric arc, so that the electric arc is converted into dielectric property from electric conductivity, and the electric arc is self-extinguished.
Example 3:
as shown in fig. 3, a lightning conductor 9 is arranged between the back-flushing pipe and the back-flushing pipe for electrical connection, one end of the lightning conductor 9 is connected with the lightning electrode 5 of one back-flushing pipe, and the other end is connected with the arc striking electrode 3 of the other back-flushing pipe. The lightning conductor 9 leads the residual electric arc of the previous recoil pipe into the next recoil pipe, and then the residual electric arc is continuously fed back to the next recoil pipe according to the flow until the electric arc is completely extinguished.
Example 4:
as shown in fig. 1-2, a conductive platform 7 is arranged between the back flush pipe and the back flush pipe for electrical connection, the conductive platform 7 comprises a lightning conduction ring 7.1 and a conductive bridge plate 7.2, the lightning conduction ring 7.1 is arranged in the back flush pipe, and the lightning conduction ring 7.1 is connected with the lightning conduction ring 7.1 through the conductive bridge plate 7.2. The conductive platform 7 is mainly used for connecting each back-flushing pipe, so that electric arcs can be back-flushed from the back-flushing pipe to two sides at the beginning, and the effect of multipoint back-flushing extinguishing of the electric arcs is achieved. The conductive platform 7 is made of a metal material.
Example 5:
the arc striking device comprises an arc striking rod 1 and an arc striking lead 2, wherein the arc striking rod 1 is arranged on the insulating filling material 6 and is connected with an arc striking electrode 3 of one of the recoil pipes through the arc striking lead 2. The back-flushing pipe is vertically arranged in the insulating filling material 6, and the back-flushing pipe are arranged in the insulating filling material 6 in a forward and reverse direction. The back-flushing pipes are obliquely arranged in the insulating filling material 6, the back-flushing pipes and the back-flushing pipes are sequentially arranged in a zigzag mode, and the included angle between every two adjacent back-flushing pipes is 30-60 degrees.
As shown in fig. 3 and 4, the vertical recoil structure is mainly formed by sequentially arranging a plurality of recoil pipes in a forward and reverse direction, the vertical recoil pipe structure can be packaged in a cylindrical or other solid insulating material (insulating filling material 6), and in order to avoid arc flashover along the surface, a skirt edge 8 is additionally arranged on the side surface of the cylindrical material, so that the arc-climbing distance is increased. In order to enable the electric arc to smoothly enter the first-stage back flushing pipe, an arc striking device is additionally arranged near the pipe orifice of the first-stage back flushing pipe, and the arc striking device mainly comprises an arc striking rod 1, an arc striking lead 2 and an arc striking electrode 3. And the adjacent two stages of recoil pipes are electrically connected by adopting an arc striking electrode 3.
As shown in fig. 1, 2 and 4, another structure of the vertical recoil is that a conductive platform 7 made of metal is arranged between two adjacent recoil units, the conductive platform 7 has a certain thickness, and the left and the right of the conductive platform 7 are respectively provided with a through hole with the same inner diameter as that of the recoil pipe. The four back flushing pipes are respectively arranged above and below two holes of the small platform, one back flushing unit consists of two back flushing pipes, and the periphery of the back flushing unit is filled and fixed by a high-strength insulating material (an insulating filling material 6). In each backflushing unit, the backflushing pipe at the opening end of the backflushing unit is not provided with a lightning receiving electrode, and the inside of the backflushing pipe is hollow and straight. The recoil pipe material is ceramic or other high-strength high-temperature-resistant insulating materials. The conductive platform 7 has the function of enabling electric arcs to develop among a plurality of vertical recoil units, and multiple multistage arc extinction is achieved. The whole shape can also be cylindrical or other cylindrical shapes, and the skirt edge 8 is also arranged on the side surface.
As shown in fig. 5-7, the multi-stage backflushing structure mainly comprises a plurality of backflushing pipes which are sequentially arranged in a zigzag manner, two adjacent backflushing pipes form a backflushing unit, and the zigzag included angle of the backflushing unit can range from 30 degrees to 60 degrees. In order to restrict and control the electric arc and make the electric arc develop according to a set path, metal wires 2 are arranged at the connection positions of the back flushing pipes. The arrangement of the multi-stage back flushing pipes can be in an N shape or a W shape. The multistage recoil structure is packaged in a cylindrical insulating material, the arc nozzles 11 are positioned on the upper surface and the lower surface of the cylinder, and the side surface of the cylinder is additionally provided with the skirt edge 8.
A low-voltage system multi-stage recoil arc extinguishing method comprises the following steps:
step 1: when the high-frequency oscillation reignition electric arc occurs on the load side or the power supply side of the power distribution network, the arc striking device draws the electric arc into the first recoil pipe through coulomb force or physical touch. The arc striking device comprises an arc striking rod 1 and an arc striking lead 2, wherein the arc striking rod 1 is arranged on an insulating filling material 6 and is connected with an arc striking electrode 3 of one of the recoil pipes through the arc striking lead 2. The pipe wall of the recoil pipe is made of a high-strength high-temperature-resistant high-pressure-resistant non-conductive material, the arc striking component is a conductive metal ring, the outer side wall of the conductive metal ring is tightly attached to the inner wall of the recoil pipe, and the lightning receiving component is made of a conductive material.
Step 2: after the flashover arc enters the recoil pipe, the arc is elastically deformed, the power of the arc is increased, the temperature is increased, and the heat in the recoil pipe is increased.
And step 3: the pressure difference between the back flushing pipe and the outside is increased, when the pressure in the back flushing pipe is greater than the pressure outside the pipe, the directional arc explosion effect from inside to outside is generated, and the explosion effect causes the discharge of electric arcs: on the one hand, the arc in the tube is rapidly evacuated; and on the other hand, the outer arc cavity effect blocks the injection of the energy of the outer arc.
And 4, step 4: the lightning receiving electrode 6 of the back flushing pipe is provided with a lightning receiving lead 9 connected with the arc striking electrode 3 of the next back flushing pipe, the residual electric arc in the previous back flushing pipe enters the next back flushing pipe through the lightning receiving lead 9 and the arc striking electrode 3 of the next back flushing pipe in sequence, and the electric arc is finally completely extinguished.
When a lightning flashover electric arc approaches the device, the arc striking electrode 3 forms an upward path through physical touch, coulomb force action or point discharge to the flashover electric arc, the electric arc is drawn to the position near the inlet of the first back flushing pipe, the outer electric arc enters the superfine back flushing pipe under the drawing of the arc striking component of the first back flushing pipe, wherein the inner diameter of the back flushing pipe is far smaller than the diameter of the electric arc, the electric arc column is filled with a narrow pipe in the back flushing pipe, the electric arc is limited by the pipe wall in the back flushing unit, the diameter of the electric arc column is forcibly reduced, the conductive cross-sectional area of the whole electric arc is reduced, the electric arc resistance is increased, and the electric arc is calculated: p ═ I2R, the electric arc power is increased, so that the heat and the temperature in the tube are increased, the power temperature is increased, meanwhile, 180-degree opposite impact collision is generated between the inlet electric arc and the outlet electric arc in the tube, a channel for arc radiation, convection, conduction and loss is cut off, the heat dissipation is blocked, the temperature is further increased, the blocking temperature rise is realized, the density of the electric arc plasma in the tube is sharply increased, the friction and the collision among particles are accelerated, the heat and the temperature are increased again, the frictional temperature rise is realized, the temperature difference between the inside and the outside of the tube is increased and the pressure difference is increased due to the three temperature rise effects, when the pressure in the recoil tube is larger than the pressure outside of the tube, the directional electric arc explosion effect from inside to outside is generated, the electric arc in the tube is rapidly evacuated, the cavity effect of the outer electric arc is realized, the energy injection of the outer electric arc is blocked, the residual electric arc is sequentially subjected to lightning, is subjected to the next arc ignition, and finally, the electric arc is simultaneously broken at a plurality of break points, the continuity of the electric arc is damaged, and the extinguishing of the impact electric arc is accelerated.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a multistage recoil arc control device of low-voltage system which characterized in that: the back flushing pipe comprises two or more back flushing pipes, insulating filling materials (6) are filled between the back flushing pipes, the back flushing pipes are electrically connected with the back flushing pipes, and the back flushing pipes are of hollow pipeline structures with one ends open and the other ends closed.
2. The multistage recoil arc extinguishing device of claim 1, wherein: the backflushing pipe comprises an arc striking electrode (3), a backflushing pipe wall (4) and a lightning receiving electrode (5), wherein the lightning receiving electrode (5) is arranged at one end of the backflushing pipe wall (4) in a sealing mode, and the arc striking electrode (3) is arranged at the other end of the backflushing pipe wall (4).
3. The multistage recoil arc extinguishing device of claim 2, wherein: set up between recoil pipe and the recoil pipe and connect and dodge wire (9) electrical connection, connect and dodge electrode (5) of a recoil pipe are connected to wire (9) one end, and arc ignition electrode (3) of another recoil pipe are connected to the other end.
4. The multistage recoil arc extinguishing device of claim 1, wherein: set up electrically conductive platform (7) electrical connection between recoil pipe and the recoil pipe, electrically conductive platform (7) dodge conducting ring (7.1) and electrically conductive bridge plate (7.2) including connecing, it dodges conducting ring (7.1) and sets up in the recoil pipe to connect dodges conducting ring (7.1) and connects dodges conducting ring (7.1) and be connected through electrically conductive bridge plate (7.2).
5. The multistage recoil arc extinguishing device of claim 2, wherein: the arc striking device comprises an arc striking rod (1) and an arc striking lead (2), wherein the arc striking rod (1) is arranged on the insulating filling material (6) and is connected with an arc striking electrode (3) of one of the recoil pipes through the arc striking lead (2).
6. The multistage recoil arc extinguishing device of claim 1, wherein: the back flushing pipe is vertically arranged in the insulating filling material (6), and the back flushing pipe are arranged in the insulating filling material (6) in a forward and reverse direction.
7. The multistage recoil arc extinguishing device of claim 1, wherein: the back-flushing pipes are obliquely arranged in the insulating filling material (6), the back-flushing pipes and the back-flushing pipes are sequentially arranged in a zigzag mode, and the included angle between every two adjacent back-flushing pipes is 30-60 degrees.
8. A low-voltage system multi-stage recoil arc extinguishing method is characterized in that: the method comprises the following steps:
step 1: when the high-frequency oscillation reignition electric arc occurs at the load side or the power supply side of the power distribution network, the arc striking device pulls the electric arc to enter a first recoil pipe through coulomb force or physical touch;
step 2: after the flashover arc enters the recoil pipe, the arc is elastically deformed, the power of the arc is increased, the temperature is increased, and the heat in the recoil pipe is increased;
and step 3: the pressure difference between the back flushing pipe and the outside is increased, when the pressure in the back flushing pipe is greater than the pressure outside the pipe, the directional arc explosion effect from inside to outside is generated, and the explosion effect causes the discharge of electric arcs: on the one hand, the arc in the tube is rapidly evacuated; on the other hand, the outer arc cavity effect blocks the injection of the energy of the outer arc;
and 4, step 4: the lightning receiving electrode (6) of the back flushing pipe is provided with a lightning receiving lead (9) connected with the arc striking electrode (3) of the next back flushing pipe, the residual electric arc in the previous back flushing pipe enters the next back flushing pipe through the lightning receiving lead (9) and the arc striking electrode (3) of the next back flushing pipe in sequence, and the electric arc is finally completely extinguished.
9. The low-voltage system multistage recoil arc extinguishing method according to claim 8, characterized in that: the arc striking device in the step 1 comprises an arc striking rod (1) and an arc striking lead (2), wherein the arc striking rod (1) is arranged on an insulating filling material (6) and is connected with an arc striking electrode (3) of one of the recoil pipes through the arc striking lead (2).
10. The low-voltage system multistage recoil arc extinguishing method according to claim 8, characterized in that: the pipe wall of the recoil pipe in the step 1 is made of a high-strength high-temperature-resistant high-pressure-resistant non-conductive material, the arc striking component is set to be a conductive metal ring, the outer side wall of the conductive metal ring is tightly attached to the inner wall of the recoil pipe, and the lightning receiving component is made of a conductive material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2019105372910 | 2019-06-20 | ||
| CN201910537291 | 2019-06-20 |
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| CN112117653A true CN112117653A (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010166054.0A Withdrawn CN112117643A (en) | 2019-06-20 | 2020-03-11 | Booster-type recoil arc extinguishing device and lightning rod |
| CN202010166561.4A Withdrawn CN112117652A (en) | 2019-06-20 | 2020-03-11 | Low-voltage system early-discharge recoil arc-extinguishing device and method |
| CN202020297004.1U Active CN211428571U (en) | 2019-06-20 | 2020-03-11 | Booster-type recoil arc extinguishing device and lightning rod |
| CN202010166074.8A Active CN112117647B (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc extinguishing method and application |
| CN202020297671.XU Active CN211238810U (en) | 2019-06-20 | 2020-03-11 | Coulomb force traction recoil intermittent interruption arc lightning rod |
| CN202010166567.1A Withdrawn CN112117653A (en) | 2019-06-20 | 2020-03-11 | Low-voltage system multistage recoil arc-extinguishing device and method |
| CN202010166064.4A Withdrawn CN112117646A (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc-extinguishing device |
| CN202010166079.0A Active CN112117648B (en) | 2019-06-20 | 2020-03-11 | Method and system for extinguishing arc plasma through multi-tube recoil |
| CN202020297016.4U Active CN211238809U (en) | 2019-06-20 | 2020-03-11 | Lightning protection device for wind turbine blades of wind power plant |
| CN202010166551.0A Withdrawn CN112117651A (en) | 2019-06-20 | 2020-03-11 | Coulomb force traction recoil intermittent arc interruption method and lightning rod |
| CN202020297679.6U Active CN211238811U (en) | 2019-06-20 | 2020-03-11 | Multistage recoil arc control device of low-voltage system |
| CN202010166062.5A Withdrawn CN112117645A (en) | 2019-06-20 | 2020-03-11 | Supercharged multistage recoil arc extinguishing device |
| CN202010166543.6A Withdrawn CN112117650A (en) | 2019-06-20 | 2020-03-11 | Lightning protection device and method for wind turbine blades of wind power plant |
| CN202010166502.7A Withdrawn CN112117649A (en) | 2019-06-20 | 2020-03-11 | Combined lightning protection arc extinguishing disc |
| CN202020296983.9U Active CN211404999U (en) | 2019-06-20 | 2020-03-11 | Combined lightning protection arc extinguishing disc |
| CN202020297019.8U Active CN211405000U (en) | 2019-06-20 | 2020-03-11 | Low-voltage system early-discharge recoil arc-extinguishing device |
| CN202020297639.1U Active CN211405002U (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc-extinguishing device |
| CN202020297636.8U Active CN211405001U (en) | 2019-06-20 | 2020-03-11 | Supercharged multistage recoil arc extinguishing device |
| CN202010166058.9A Active CN112117644B (en) | 2019-06-20 | 2020-03-11 | Supercharged multi-stage recoil arc-extinguishing method and system |
Family Applications Before (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010166054.0A Withdrawn CN112117643A (en) | 2019-06-20 | 2020-03-11 | Booster-type recoil arc extinguishing device and lightning rod |
| CN202010166561.4A Withdrawn CN112117652A (en) | 2019-06-20 | 2020-03-11 | Low-voltage system early-discharge recoil arc-extinguishing device and method |
| CN202020297004.1U Active CN211428571U (en) | 2019-06-20 | 2020-03-11 | Booster-type recoil arc extinguishing device and lightning rod |
| CN202010166074.8A Active CN112117647B (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc extinguishing method and application |
| CN202020297671.XU Active CN211238810U (en) | 2019-06-20 | 2020-03-11 | Coulomb force traction recoil intermittent interruption arc lightning rod |
Family Applications After (13)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010166064.4A Withdrawn CN112117646A (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc-extinguishing device |
| CN202010166079.0A Active CN112117648B (en) | 2019-06-20 | 2020-03-11 | Method and system for extinguishing arc plasma through multi-tube recoil |
| CN202020297016.4U Active CN211238809U (en) | 2019-06-20 | 2020-03-11 | Lightning protection device for wind turbine blades of wind power plant |
| CN202010166551.0A Withdrawn CN112117651A (en) | 2019-06-20 | 2020-03-11 | Coulomb force traction recoil intermittent arc interruption method and lightning rod |
| CN202020297679.6U Active CN211238811U (en) | 2019-06-20 | 2020-03-11 | Multistage recoil arc control device of low-voltage system |
| CN202010166062.5A Withdrawn CN112117645A (en) | 2019-06-20 | 2020-03-11 | Supercharged multistage recoil arc extinguishing device |
| CN202010166543.6A Withdrawn CN112117650A (en) | 2019-06-20 | 2020-03-11 | Lightning protection device and method for wind turbine blades of wind power plant |
| CN202010166502.7A Withdrawn CN112117649A (en) | 2019-06-20 | 2020-03-11 | Combined lightning protection arc extinguishing disc |
| CN202020296983.9U Active CN211404999U (en) | 2019-06-20 | 2020-03-11 | Combined lightning protection arc extinguishing disc |
| CN202020297019.8U Active CN211405000U (en) | 2019-06-20 | 2020-03-11 | Low-voltage system early-discharge recoil arc-extinguishing device |
| CN202020297639.1U Active CN211405002U (en) | 2019-06-20 | 2020-03-11 | Supercharged single-recoil arc-extinguishing device |
| CN202020297636.8U Active CN211405001U (en) | 2019-06-20 | 2020-03-11 | Supercharged multistage recoil arc extinguishing device |
| CN202010166058.9A Active CN112117644B (en) | 2019-06-20 | 2020-03-11 | Supercharged multi-stage recoil arc-extinguishing method and system |
Country Status (1)
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| CN (19) | CN112117643A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349536A (en) * | 2020-10-31 | 2021-02-09 | 贵州电网有限责任公司 | Gas blowing arc-extinguishing device of gas circuit breaker |
| CN112727711A (en) * | 2021-01-04 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Lightning protection device for wind driven generator blade |
| CN113328340A (en) * | 2021-04-23 | 2021-08-31 | 广西雷闪电气科技有限公司 | Liquid recoil arc extinguishing lightning protection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486956B (en) * | 2010-12-02 | 2013-06-26 | 王巨丰 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
| CN202042294U (en) * | 2010-12-02 | 2011-11-16 | 王巨丰 | Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device |
| CN103594210B (en) * | 2013-11-13 | 2015-10-28 | 王巨丰 | Multiple level self-expanding air blast is vertical blows out arc lightning protection device |
| CN106451077B (en) * | 2016-08-28 | 2018-05-08 | 王巨丰 | Thunder and lightning induction type solid phase arc extinguishing lightning protection device |
| CN107732663B (en) * | 2017-09-14 | 2023-06-02 | 王巨丰 | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn |
| CN109217112B (en) * | 2018-09-30 | 2023-06-02 | 武汉微创元电子科技有限责任公司 | Combined lightning arrester based on disc-shaped multi-gap arc extinguishing lightning protection device |
-
2020
- 2020-03-11 CN CN202010166054.0A patent/CN112117643A/en not_active Withdrawn
- 2020-03-11 CN CN202010166561.4A patent/CN112117652A/en not_active Withdrawn
- 2020-03-11 CN CN202020297004.1U patent/CN211428571U/en active Active
- 2020-03-11 CN CN202010166074.8A patent/CN112117647B/en active Active
- 2020-03-11 CN CN202020297671.XU patent/CN211238810U/en active Active
- 2020-03-11 CN CN202010166567.1A patent/CN112117653A/en not_active Withdrawn
- 2020-03-11 CN CN202010166064.4A patent/CN112117646A/en not_active Withdrawn
- 2020-03-11 CN CN202010166079.0A patent/CN112117648B/en active Active
- 2020-03-11 CN CN202020297016.4U patent/CN211238809U/en active Active
- 2020-03-11 CN CN202010166551.0A patent/CN112117651A/en not_active Withdrawn
- 2020-03-11 CN CN202020297679.6U patent/CN211238811U/en active Active
- 2020-03-11 CN CN202010166062.5A patent/CN112117645A/en not_active Withdrawn
- 2020-03-11 CN CN202010166543.6A patent/CN112117650A/en not_active Withdrawn
- 2020-03-11 CN CN202010166502.7A patent/CN112117649A/en not_active Withdrawn
- 2020-03-11 CN CN202020296983.9U patent/CN211404999U/en active Active
- 2020-03-11 CN CN202020297019.8U patent/CN211405000U/en active Active
- 2020-03-11 CN CN202020297639.1U patent/CN211405002U/en active Active
- 2020-03-11 CN CN202020297636.8U patent/CN211405001U/en active Active
- 2020-03-11 CN CN202010166058.9A patent/CN112117644B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112117652A (en) | 2020-12-22 |
| CN211405000U (en) | 2020-09-01 |
| CN112117644B (en) | 2022-04-08 |
| CN112117644A (en) | 2020-12-22 |
| CN211405002U (en) | 2020-09-01 |
| CN112117650A (en) | 2020-12-22 |
| CN112117647A (en) | 2020-12-22 |
| CN112117648A (en) | 2020-12-22 |
| CN112117645A (en) | 2020-12-22 |
| CN112117646A (en) | 2020-12-22 |
| CN112117647B (en) | 2022-04-12 |
| CN211238809U (en) | 2020-08-11 |
| CN112117643A (en) | 2020-12-22 |
| CN211428571U (en) | 2020-09-04 |
| CN112117649A (en) | 2020-12-22 |
| CN211238811U (en) | 2020-08-11 |
| CN211405001U (en) | 2020-09-01 |
| CN112117651A (en) | 2020-12-22 |
| CN211404999U (en) | 2020-09-01 |
| CN112117648B (en) | 2022-05-27 |
| CN211238810U (en) | 2020-08-11 |
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Application publication date: 20201222 |