CN112117655A

CN112117655A - Telescopic arc extinguishing assembly switching method utilizing recoil force

Info

Publication number: CN112117655A
Application number: CN201910537352.3A
Authority: CN
Inventors: 王嬿蕾; 骆耀敬; 王巨丰; 王成全; 张奇星; 李籽剑; 唐佳雄; 庞智毅; 杨倩颖; 彭斐; 张清河; 王国锋; 李心如; 郭克竹; 段小嬿
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-12-22
Anticipated expiration: 2039-06-20
Also published as: CN112117655B

Abstract

The invention discloses a switching method of a telescopic arc-extinguishing assembly by utilizing recoil force, belonging to the field of lightning protection devices of power transmission lines. The gas generating assembly is released under the action of the recoil of strong airflow, and the arc extinguishing turntable rotates under the action of the rotating shaft. When the gas generating assembly on the trigger position rotates to the trigger position, one end part of the gas generating assembly extends into the arc extinguishing cylinder to realize clamping again, and the metal shell of the gas generating assembly is communicated with the trigger loop after contacting with the metal electrode to wait for the next trigger signal. The invention improves the effectiveness and reliability of switching of the arc-extinguishing gas-generating assembly, avoids the problem of shell clamping when the arc-extinguishing turntable rotates, and one end part of the gas-generating assembly on the trigger position extends into the arc-extinguishing cylinder, so that the strong gas flow generated during triggering has stronger sealing effect, the strong gas flow is maximized to act on electric arcs, and the arc-extinguishing capability is improved.

Description

Telescopic arc extinguishing assembly switching method utilizing recoil force

Technical Field

The invention relates to the field of lightning protection devices of power transmission lines, in particular to a switching method of a telescopic arc extinguishing assembly by utilizing recoil force.

Background

Lightning protection of a power transmission line is always important content of lightning protection work of a power department, and lightning faults are still one of important factors influencing the safety of a power grid. The lightning stroke of the transmission line causes the flashover of a line insulator, and the following power frequency current damages an insulator string and hardware fittings, thereby causing the accidents of burning the insulator string and burning a lead.

The existing power transmission line lightning protection device mainly uses a power transmission line lightning protection gap device, but the lightning protection key of the existing lightning protection gap device is to use a gas generator to perform arc extinguishing treatment. When the gas generating assembly is in the triggering position, the end part of the triggering electrode is clamped by the positioning rod until the gas generating assembly is triggered, strong gas flow is generated after the gas generating assembly is triggered, the triggering electrode at the groove is bent, the end part of the triggering electrode retracts into the arc extinguishing turntable, and the arc extinguishing turntable rotates under the action of the flat spiral spring until the next gas generating assembly enters the triggering position, and the triggering electrode matched with the next gas generating assembly is clamped by the positioning rod.

The strong air flow of the jet not only transversely acts on the groove trigger electrode, but also longitudinally acts on the electric arc, and the strong air flow is hopefully to maximally act on the electric arc in consideration of the worry that the electric arc is not fully acted by the strong air flow; the arc extinguishing rotating disc is easy to clamp the shell when rotating, and therefore, a switching method of the telescopic arc extinguishing assembly utilizing recoil force is provided.

Disclosure of Invention

The present invention is directed to a switching method of a retractable arc extinguishing module using a recoil force to solve the technical problems mentioned in the background art.

A switching method of a telescopic arc extinguishing assembly using a recoil force, the switching method comprising the processes of:

step 1: the gas generating component gas nozzle is limited by the movable limiting module, the bottom of the gas generating component is limited elastically by the fixed limiting module, and the arc extinguishing cylinder module is arranged on the movable limiting module and is opposite to the gas generating component without contact;

step 2: when a trigger position on the gas production assembly receives a lightning trigger signal, the gas production assembly produces gas flow, under the action of the recoil of the gas flow, the fixed limit module elastically limits the bottom of the gas production assembly and is compressed, and the gas production assembly recoils backwards to move away from a buckle of the arc extinguishing cylinder module;

and step 3: the arc extinguishing cylinder module and the gas generating component move relatively to the next gas generating component to be triggered, the gas generating component to be triggered moves outwards under the elastic limiting effect of the fixed limiting module on the bottom of the gas generating component, and the gas generating component to be triggered is clamped into the arc extinguishing cylinder module.

Furthermore, in the step 1, a plurality of gas generation component storage grooves for storing gas generation components are uniformly distributed on the peripheral edge of the disc-shaped turntable, the fixed limiting module is a bottom plate, the bottom plate is fixed at the rear end of the turntable, the movable limiting module is arranged as a shell frame, the shell frame is sleeved on the outer side of the turntable, the front end of the turntable is in contact with and rotatable with the rotating plate, and the arc extinguishing cylinder module is arranged as an arc extinguishing cylinder with a vent hole inside and is fixed at the front end of the shell frame and opposite to the gas generation components on the turntable.

Furthermore, the gas production assembly storage groove is composed of two round holes with different inner diameters at two ends, the center lines of the two round holes are arranged on the same straight line, and the diameter of the round hole at the rear end of the rotary table is larger than that of the round hole at the front end of the rotary table.

Furthermore, in the step 1, the fixed limiting module elastically limits the bottom of the gas production assembly by using a spring, one end of the spring is fixed on the bottom plate, and the other end of the spring is fixed at the bottom of the gas production assembly.

Furthermore, in the steps 1 to 3, the base of the gas generating assembly is in contact with the bottom plate through a spring, one end of the gas generating assembly on the position to be triggered is in contact with the shell frame, the other end of the gas generating assembly on the position to be triggered is in contact with the bottom plate through a spring, the spring is compressed under the action of pressure, and one end part of the gas generating assembly on the position to be triggered extends into the arc extinguishing cylinder to be clamped; the other end of the spring is connected and contacted with the bottom plate through the spring, the gas generating assembly on the trigger position is not restrained by the outer shell frame, the spring extends, and the raised part of the gas generating assembly in the gas generating assembly storage groove limits the base of the gas generating assembly.

Furthermore, two trigger signal input terminals are arranged on the gas production assembly base and arranged in the spring; one of the trigger signal input terminals is connected with the bottom plate through a lead, the other trigger signal input terminal is connected with a metal shell of the gas generating assembly through a lead, a metal electrode is arranged on the upper surface of a convex part in each gas generating assembly storage groove of the turntable, the metal electrode is connected with one end of an induction coil through a lead, and the other end of the induction coil is connected with the bottom plate.

Further, it includes trigger signal input terminal, parcel layer, air shot base, air shot and fumarole to produce the gas subassembly, trigger signal input terminal sets up on the air shot base, the air shot sets up the one side at the air shot base, parcel layer parcel is in the outside of air shot base and air shot to the laminating setting, parcel layer and air shot's laminating department is provided with the fumarole, the parcel layer sets up to hard layer, the air shot is triggered the burning, the lateral wall of parcel layer carries out radial restraint to the air shot, and both ends carry out axial restraint to the air shot, and the gas that the air shot produced is followed the fumarole blowout.

Further, it includes trigger signal input terminal, spacing frame, sleeve, air shot base, air shot and fumarole to produce the gas subassembly, trigger signal input terminal sets up on the air shot base, the setting is connected with the air shot to the air shot base, the sleeve cover is established in the outside of air shot, spacing frame card cover is in the outside of sleeve and air shot base, be provided with the fumarole on the spacing frame, the air shot is triggered the burning and is produced gas, the sleeve produces radial restraint to gas, and spacing frame produces axial restraint to gas, burns the speed and accelerates in the air shot, and gas is followed the fumarole blowout, spacing frame and sleeve all set up to the stereoplasm structure.

Furtherly, it includes trigger signal input terminal, spacing bucket, sleeve, air shot base, air shot and fumarole to produce the gas subassembly, trigger signal input terminal sets up on the air shot base, the setting is connected with the air shot to the air shot base, the sleeve cover is established in the outside of air shot, spacing bucket card cover is in the outside of sleeve and air shot base, be provided with the fumarole on the spacing bucket, the air shot is triggered the burning, the sleeve carries out radial restraint to the air shot, spacing bucket carries out axial restraint to the air shot, and the gaseous fumarole blowout of following of air shot production, spacing bucket and sleeve all set up to the stereoplasm structure.

Further, it includes trigger signal input terminal, goes up framework, sleeve, air shot base, air shot, lower framework and fumarole to produce the gas subassembly, trigger signal input terminal sets up on the air shot base, the air shot base is connected the setting with the air shot, the sleeve cover is established in the outside of air shot, go up the framework and can dismantle with lower framework and be connected, and go up the framework and lower framework card cover in the outside of sleeve and air shot base, the fumarole sets up in lower framework, the air shot is triggered the burning and is produced gas, the sleeve produces radial restraint to gas, go up framework and lower framework and combine to produce axial restraint to gas, fuel burning speed accelerates in the air shot, and gas is followed the fumarole blowout, go up framework, lower framework and sleeve and all set up to the stereoplasm structure.

The edge around the disc-shaped arc extinguishing turntable is uniformly distributed with a plurality of grooves for placing gas generating assemblies, the inner diameters of the round holes of the grooves are different from top to bottom, and the lower ends of the round holes of the grooves are slightly convex and used for clamping the gas generating assemblies on the trigger positions. The bottom of the arc-extinguishing turntable is packaged with a metal round bottom plate, the area of the bottom plate is the same as that of the arc-extinguishing turntable, so that one end of the groove of the arc-extinguishing turntable is sealed by the bottom plate, and the other end of the groove is open. The arc extinguishing rotating disc is packaged in the insulating device shell, is connected with the device shell through a rotating shaft and can rotate under the action of the rotating shaft.

The gas production assembly base is connected and contacted with the metal bottom plate through a spring. One end of the gas generating component on the position to be triggered is contacted with the shell, the other end (base) is connected and contacted with the metal bottom plate through a spring, and the spring is compressed under the action of pressure. One end part of the gas generating component on the trigger position extends into the arc extinguishing cylinder and can play a role of clamping; the other end (base) is connected and contacted with the metal bottom plate through a spring, and the gas production assembly on the trigger position is not restrained by the device shell any more, the spring extends, and the convex part in the groove limits the gas production assembly base.

The gas production assembly base is provided with two trigger signal input terminals which are arranged in the spring; one of the trigger signal input terminals is connected with the metal bottom plate through a lead, and the other trigger signal input terminal is connected with the metal shell of the gas production assembly through a lead. The upper surface of the convex part in each groove of the arc extinguishing turntable is provided with a metal electrode, the metal electrode is connected with one end of an induction coil through a lead, and the other end of the induction coil is connected with a metal bottom plate.

Further, a pressurizing cover can be arranged outside the gas production assembly, the pressurizing cover is made of high-strength metal materials, the pressurizing cover wraps the whole gas production assembly, and two triggering signal access holes and one gas outlet hole are reserved. When the pressure increasing cover is arranged outside the gas generating assembly, the pressure increasing cover on the trigger position is contacted with the metal electrode, one trigger signal input terminal of the gas generating assembly penetrates through the pressure increasing cover to be connected with the metal bottom plate, and the other trigger signal input terminal penetrates through the pressure increasing cover to be connected with the shell of the pressure increasing cover.

Further, the arc extinguishing cylinder can be designed to be a concave arc surface at the top end of the inner wall, and the concave arc surface can generate larger reverse acting force to the arc extinguishing strong airflow, so that the gas generating assembly on the trigger position is reliably released.

When the gas production assembly on the trigger position receives a lightning trigger signal, the shell of the gas production assembly bursts to generate strong arc-extinguishing airflow. Meanwhile, under the action of the recoil of strong airflow, the spring is compressed, the gas generation assembly on the trigger position is released, and the arc extinguishing turntable rotates under the action of the rotating shaft. When the gas generating assembly on the trigger position rotates to the trigger position, the spring extends, one end part of the gas generating assembly extends into the arc extinguishing cylinder to realize clamping again, and the metal shell of the gas generating assembly is communicated with the trigger loop after contacting with the metal electrode to wait for the next trigger signal.

By adopting the technical scheme, the invention has the following technical effects:

the invention improves the effectiveness and reliability of switching of the arc-extinguishing gas-generating assembly, avoids the problem of shell clamping when the arc-extinguishing turntable rotates, and one end part of the gas-generating assembly on the trigger position extends into the arc-extinguishing cylinder, so that the strong gas flow generated during triggering has stronger sealing effect, the strong gas flow is maximized to act on electric arcs, and the arc-extinguishing capability is improved.

Drawings

FIG. 1 is a flow chart of the present invention.

FIG. 2 is a cross-sectional view of the inventive apparatus.

Fig. 3 shows two other cross-sectional views of the device of the present invention.

FIG. 4 is two cross-sectional views of the electrode connecting structure of the present invention.

FIG. 5 is a cross-sectional view of a first configuration of a gas-generating assembly according to the invention.

FIG. 6 is a cross-sectional view of four alternative configurations of a second gas generating assembly according to the invention.

FIG. 7 is a cross-sectional view of a third configuration of a gas generating module according to the invention in two different forms.

Fig. 8 is a cross-sectional view of four forms of a fourth construction of a gas generating assembly according to the invention.

FIG. 9 is a comparison graph of the arc extinguishing effect of the gas generating assembly of the present invention and the arc extinguishing effect of the conventional gas generator.

In the figure: 1-housing frame; 2-rotating the disc spindle; 3-a bottom plate; 4-a spring; 5-a gas production assembly storage tank; 6, rotating a disc; 7-a gas generating component; 8-arc extinguishing cylinder; 9-an induction coil; 10-conductor, 11A-trigger signal input terminal; 12A-a wrapping layer; 13A-balloon base; 14A-qi pill; 15A-gas injection holes; 16A-bottom wall; 11B-trigger signal input terminal; 12B-a limit frame; 13B-a sleeve; 14B-balloon base; 15B-qi pill; 16B-gas injection holes; 17B-gasket; 18B-a base support; 11C-trigger signal input terminal; 12C-a limit barrel; 13C-a sleeve; 14C-balloon base; 15C-qi pill; 16C — gas injection holes; 17C-bottom wall; 18C-gasket; 11D-trigger signal input terminal; 12D-upper frame; 13D-a sleeve; 14D-balloon base; 15D-Qiwan; 16D-lower frame; 17D-gas injection holes; 18D-gasket pad; 19D-frame connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. 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.

An embodiment of the invention is further described in accordance with the above-described principle description and with reference to fig. 1:

example 1:

the invention provides a switching method of a telescopic arc extinguishing assembly by utilizing recoil force, which comprises the following steps:

step 1: the gas generating component 7 is limited by the movable limiting module, the bottom of the gas generating component 7 is limited by the fixed limiting module in an elastic manner, and the arc extinguishing cylinder module is arranged on the movable limiting module and is opposite to the gas generating component 7 without contact. The movable limiting module is used as a plate or a frame for extruding the front end of the gas generating assembly 7 and is used for extruding the gas generating assembly 7 into the gas generating assembly storage groove 5 in the rotary table 6. The arc extinguishing cylinder module is provided with an arc extinguishing cylinder 8 with a gas injection cylinder, and then the arc extinguishing cylinder 8 conducts strong airflow to extinguish arc.

Step 2: when the trigger position on the gas production assembly 7 receives a lightning trigger signal, the gas production assembly 7 produces gas flow, the fixed limit module elastically limits the bottom of the gas production assembly 7 and is compressed under the action of the recoil of the gas flow, and the gas production assembly 7 moves backwards in a recoil way and is separated from the buckle of the arc extinguishing barrel module.

And step 3: the arc extinguishing cylinder module and the gas generating component 7 move relatively to the next gas generating component 7 to be triggered, the gas generating component 7 to be triggered moves outwards under the elastic limiting action of the fixed limiting module on the bottom of the gas generating component 7, and the gas generating component 7 to be triggered is clamped into the arc extinguishing cylinder module.

At the beginning, the gas generating component corresponding to the arc extinguishing cylinder on the arc extinguishing cylinder module is clamped in the arc extinguishing cylinder, and then when a lightning signal is input, the gas generating component clamped in the arc extinguishing cylinder generates gas firstly. When the gas production assembly 7 on the trigger position receives a lightning trigger signal, the gas injection hole on the outer shell of the gas production assembly 7 bursts to generate strong arc-extinguishing airflow. Meanwhile, under the action of the recoil of strong airflow, the spring 4 is compressed, the gas generation assembly on the trigger position is released, and the rotating disc 6 rotates under the action of the rotating shaft 2. When the gas generating assembly 7 on the trigger position rotates to the trigger position, the spring 4 extends, one end part of the gas generating assembly extends into the arc extinguishing cylinder 8 to realize clamping again, and the metal shell of the gas generating assembly is communicated with the trigger loop after being contacted with the metal electrode to wait for the next trigger signal.

Example 2:

in the step 1, a plurality of gas generation component storage grooves 5 for containing gas generation components 7 are uniformly distributed on the peripheral edge of a disc-shaped rotary table 6, a fixed limiting module is a bottom plate 3, the bottom plate 3 is fixed at the rear end of the rotary table 6, a movable limiting module is arranged to be an outer shell frame 1, the outer side of the rotary table 6 is sleeved with the outer shell frame 1, the front end of the rotary table 6 is in contact and rotatable arrangement, an arc extinguishing cylinder 8 with a vent hole inside is arranged on the arc extinguishing cylinder module, and the front end of the outer shell frame 1 is oppositely arranged with the gas generation components on the rotary table 6. The bottom plate 3 is a metal bottom plate, the size of the bottom plate is the same as that of the rotary table 6, and the shell frame 1 is an insulating frame.

Example 3:

the gas production assembly storage tank 5 is composed of two round holes with different inner diameters at two ends, the center lines of the two round holes are arranged on the same straight line, and the diameter of the round hole at the rear end of the rotary table 6 is larger than that of the round hole at the front end of the rotary table 6. The inner diameters of the circular holes of the gas production component storage grooves 5 are different from top to bottom, and the lower ends of the circular holes are slightly convex and used for clamping the gas production components 7 on the trigger positions. The gas generating component storage tank 5 is mainly used for storing the gas generating component 7, and the length of the gas generating component storage tank is longer than that of the gas generating component 7.

Example 4:

in the step 1, the fixed limiting module elastically limits the bottom of the gas production assembly by using a spring 4, one end of the spring is fixed on the bottom plate 3, and the other end of the spring is fixed at the bottom of the gas production assembly. The elastic limit can also be elastically fixed by using an elastic sheet and the like, so that when air is injected, the spring 4 is compressed, the gas generation assembly 7 is withdrawn from the clamping position of the arc extinguishing cylinder 8, and the next transposition is realized. The elastic limit may be any other component or device having an elastic function other than a spring or an elastic sheet.

Example 5:

in the step 1-step 3, the base of the gas generating component 7 is connected and contacted with the bottom plate 3 through the spring 4, one end of the gas generating component 7 on the position to be triggered is contacted with the outer shell frame 1, the other end is connected and contacted with the bottom plate 3 through the spring, the spring 4 is compressed under the action of pressure, and one end part of the gas generating component on the triggering position extends into the arc extinguishing cylinder 8 to be clamped; the other end of the spring is connected and contacted with the bottom plate 3 through the spring 4, the gas generating component on the trigger position is not restrained by the shell frame 1, the spring extends, and the raised part of the gas generating component in the gas generating component storage groove 5 limits the base of the gas generating component.

Example 6:

the gas production assembly base is provided with two trigger signal input terminals which are arranged in the spring; one of the trigger signal input terminals is connected with the bottom plate 3 through a lead 10, the other trigger signal input terminal is connected with a metal shell of the gas generating assembly through a lead 10, metal electrodes are arranged on the upper surface of a convex part in each gas generating assembly storage groove 5 of the rotary table 6, the metal electrodes are connected with one end of an induction coil 10 through a lead 10, and the other end of the induction coil 9 is connected with the bottom plate 3. The induction coil 9 is used for inducing current and then transmitting the current to the gas generating assembly 7 to trigger gas generation.

Example 7:

as shown in fig. 5, the gas generation assembly 7 includes a trigger signal input terminal 11A, a wrapping layer 12A, a gas pill base 13A, a gas pill 14A and a gas orifice 15A, the trigger signal input terminal 11A is arranged on the gas pill base 13A, the gas pill 14A is arranged on one side of the gas pill base 13A, the wrapping layer 12A is wrapped on the outer sides of the gas pill base 13A and the gas pill 14A and is attached to the outer sides, the air orifice 15A is arranged at the attachment position of the wrapping layer 12A and the gas pill 14A, the wrapping layer 12A is arranged to be a hard layer, the internal pressure of the wrapping layer 12A is increased, the bending moment at the gas orifice 15A is increased, and high-pressure gas flow is sprayed. The sum of the base pressure of the gas pellet 14A and the incremental pressure of the envelope 12A is greater than the critical pressure at which the gas pellet 14A ruptures.

The air pill base 13A and the air pill 14A are nested within the envelope 12A, which envelopes them. And the tight nesting of the air pill base 13A and the air pill 14A with the coating layer 12A is realized, and the thickness of the inner wall of the coating layer 2 can be processed, so that the air pill base and the air pill do not deviate or expand and the like. The gas bolus 14A is held at a high gas pressure by the envelope 12A, and all of the gas generated by the combustion of the gas generating material in the gas bolus 14A is subjected to all of the pressure in the envelope 12A. A trigger signal input port is designed at the top end of the wrapping layer 12A, and a trigger signal input terminal 11A is arranged on the trigger signal input port and used for receiving a lightning trigger signal by the air ball 14A; the fumarole 15A that parcel layer 12A established, gaseous 15A blowout and the spray direction from this fumarole that does not wrap up are controllable, diminish through the aperture of the fumarole 15A who establishes, and the position that sets up as required simultaneously realizes having realized the controllable condition of direction with the contrast of original detonation mode. The wrapping layer 12A is made of a high-strength material such as aluminum steel.

After the gas pill 14A receives the trigger signal input by the trigger signal input terminal 1, gas is rapidly generated in the gas pill 14A, and the strength of the wrapping layer 12A is very good and is far greater than the pressure of the gas generated by the gas pill 14A, so that the wrapping layer 12A cannot crack to generate detonation. The pressure intensity of the gas generated in the gas pill 4 is greater than the surface layer of the gas pill 4, and after the gas pill bears the maximum pressure, the gas generated by the gas pill 4 can only be ejected from the gas ejecting hole 15A, so that the pressure intensity of the ejected gas is increased, and the operation of controllable gas ejecting direction is realized according to the setting size and position of the gas ejecting hole 15A. And during the burning process of the gas pill 14A, the internal gas pressure is increased, so that the burning speed is higher, and the arc extinguishing reaction time is shorter.

The air ejection holes 15A are provided at opposite ends of the trigger signal input terminal 11A, and the trigger signal input terminal 11A is provided in contact with the gas pill 14A. Through setting up fumarole 15A and trigger signal input terminal 11A at the opposition end for gunpowder in the gas pellet 14A structure just can press the material constraint layer of fumarole 5 in the twinkling of an eye after the complete burning of gas pressure, makes the gas production material burning in the gas pellet 14A more complete, and gas pressure is bigger, can extinguish the electric arc that higher voltage transmission of electricity produced, makes the effect of arc extinguishing better.

The gas pill 14A comprises a material bound layer, gunpowder and solid oxygen or liquid oxygen, wherein the gunpowder and the solid oxygen or the liquid oxygen are mixed and sealed and placed in the material bound layer, the fracture pressure value of the material bound layer is far smaller than the increment value of the pressure in the wrapping layer, and the increment pressure of the material bound layer is smaller than the critical pressure for fracture of the gunpowder.

After the gunpowder is ignited, the solid oxygen or the liquid oxygen provides combustion oxygen, and when the temperature rises, the solid oxygen or the liquid oxygen is gasified to provide an additional gas pressure, so that a secondary pressurization effect is formed, and the gas pressure is increased more quickly. The gas pressure generated when the gunpowder is basically completely combusted is larger than the critical pressure for breaking the material bound layer, so that the material bound layer at the gas injection hole is broken, and the gas is injected from the gas injection hole to extinguish the arc.

The trigger signal input terminal 11A is arranged by arranging a plurality of heating resistance wires in contact with gunpowder inside the gas pill, and the plurality of heating resistance wires are arranged in parallel and connected with the trigger signal input terminal. The heating resistance wires are arranged in parallel, so that the effect of multipoint ignition is realized, the reaction time can be shortened, the reaction time for arc extinction can be shortened, and the arc extinction is quicker.

The trigger signal input terminal 11A inputs a current signal, the resistance wire generates heat, gunpowder in the gas pill burns to generate high-pressure gas, the wrapping layer 12A axially and radially restrains the high-pressure gas, the pressure in the wrapping layer is increased, the bending moment at the gas injection hole is improved, the pressure of the high-pressure gas is greater than the bending moment of the material binding layer at the gas injection hole, the high-pressure gas is sprayed out from the gas injection hole, and the gas injection direction is controlled by the position where the gas injection hole 15A is arranged. When the gas pill 4 receives the electric signal of the trigger signal input terminal 1, a large amount of arc extinguishing gas can be triggered and generated; the high-strength wrapping layer 12A carries out radial restraint and axial restraint on the air flow, and the incremental pressure in the wrapping layer 12A is rapidly increased; because the high-strength wrapping layer wraps the gas generating material, the burning speed of the gas generating material is accelerated, the burning integrity is improved, the internal pressure of the wrapping layer is increased, the bending moment at the air injection hole is improved, and high-pressure air flow is injected. Because the strength of the air outlet is far less than that of the wrapping layer 12A, and the aperture of the air injection hole 15A is reduced, a large bending moment can be generated, when the sum of the basic pressure of the air pill 14A and the increment pressure of the wrapping layer is greater than the critical pressure of the rupture of the gas generating material, the air flow is injected from the non-wrapped air outlet, the injection direction of the air outlet is controllable, the injected air flow is concentrated and strong, and the arc extinguishing effect is greatly improved. By improving the sealing strength, the material in the gas pill 14A is fully combusted to generate larger critical release air pressure, high-speed arc extinguishing airflow is generated while arc is built, the high-speed arc extinguishing airflow acts on an arc channel, the follow-up power frequency arc building process is blocked, the power frequency arc can be extinguished in a very short time, and the arc extinguishing time is far shorter than the action time of the circuit breaker. Wherein the gas generated by the arc extinguishing unit directly influences the arc extinguishing effect.

The parcel layer 12A sets up to the drum structure, drum structure inner wall closely laminates with air ball base 13A and air ball 14A, drum structure bottom sets up to open structure, drum structure bottom side is provided with diapire 16A, embolia air ball base 13A and air ball 14A after, use mechanical extrusion diapire 16A to inwards fold up, become 90 with the lateral wall, fumarole 15A sets up at drum structure top, set up trigger signal input terminal 11A's input port on parcel layer 12A, when the installation, the practicality embolias parcel layer 12A's inner tube together air ball base 13A and air ball 14A in, then extrude diapire 16A to inwards fold up through extrusion machine. The bottom wall 16A is mainly a fixed balloon base 13A, and generates a front-rear tension when high-pressure gas is generated, and is fixed by the bottom wall 16A, and the thickness of the bottom wall 16A is thicker than that of the other end of the cylindrical structure. The drum structure is convenient to install and simple to machine, can greatly save machining cost, and improves economic benefits.

The wrapping layer 12A is arranged to be of a box body structure, a buckling cover is arranged on the box body structure, and the buckling cover is buckled with the box body structure through a buckle. The air pill base 13A and the air pill 14A are placed in a box body structure, wherein the internal structure arranged in the box body structure is the same as the structures of the air pill base 13A and the air pill 14A, and can be a cylindrical structure, a square structure or a raised head structure, and the like, and the box body structure can be opened during processing. After the gas pill base 13A and the gas pill 14A are sleeved, the buckling cover is covered, then the buckle is used for buckling, the installation is convenient, the installation can be completed directly by hand, the processing speed is high, and the economy is less than high.

The size of the gas injection hole 15A is 5-8mm, and the gas generated by the gas pill 14A is ejected from the gas injection hole. The air current is sprayed from the uncoated air injection hole 15A, the spraying direction of the air injection hole 15A is controllable, the sprayed air current is concentrated and strong, and the arc extinguishing effect is greatly improved. The ordinary original spray hole is generally dozens of millimeters, so that the spray range is too large, the spray time is shortened, and the arc extinguishing effect is poor. According to a bending moment calculation formula: m is θ · EI/L, θ is torque, EI is rotational stiffness, and L is the effective calculated length of the rod. Theta is that torque and EI are the rotational stiffness homogeneous phase is the same, and L shortens the back for the moment of flexure grow, and the pressure grow of spun gas promptly, and fumarole 16A is less, and same gas needs longer time just can spout, and the time of arc extinguishing also is longer, reaches the increase of arc extinguishing gas pressure, and the arc extinguishing time increases, reaches the effect of better arc extinguishing.

The wrapping layer 12A and the material binding layer are made of the same type of metal materials, and the thickness of the wrapping layer 12A is in direct proportion to the amount of gunpowder. Because the lightning protection device is installed on the transmission line for a long time, the conditions of sun exposure and rain exposure can be caused, if different metals are used, a point potential difference is formed between the material binding layer and the radial sleeve piece or the wrapping layer, and the condition of corrosion can easily occur after the potential difference is formed, so that the service life of the lightning protection device is greatly shortened, and the same type of metal materials can be used for effectively preventing the conditions.

Example 8:

as shown in fig. 6, the gas generation assembly 7 includes a trigger signal input terminal 11B, a limiting frame 12B, a sleeve 13B, a gas pill base 14B, a gas pill 15B and a gas injection hole 16B, the trigger signal input terminal 11B is disposed on the gas pill base 14B, the gas pill base 14B is connected with the gas pill 15B, the sleeve 13B is sleeved on the outer side of the gas pill 15B, the limiting frame 12B is clamped on the outer sides of the sleeve 13B and the gas pill base 14B, the gas injection hole 16B is disposed on the limiting frame 12B, the pressure intensity in the sleeve and the limiting frame is increased, the bending moment at the gas injection hole is increased, and high-pressure gas flow is injected. The sum of the base pressure of the gas pill 15B and the incremental pressure of the limiting frame 12B or the incremental pressure of the sleeve 13B is larger than the critical pressure of gas generating material rupture in the gas pill 15B, and the limiting frame 12B and the sleeve 13B are both set to be hard structures.

The base pressure of the gas pill 15B is a reaction force of the extrusion force of the wrapped gunpowder when the gas pill 15B is not combusted, that is, when the sleeve 13B is tightly wrapped with the gas pill 15B, the gas pill 15B generates an outward tension to the sleeve 13B, that is, the base pressure of the gas pill 15B, and the incremental pressure of the sleeve 13B is an incremental pressure for increasing the outward pressure to the sleeve 13B, so that the limit pressure at which the sleeve 13B just breaks is the incremental pressure of the sleeve 13B. The incremental pressure of the limit frame 12B is the outward pressure above and below the limit frame 12B, so that the limit pressure at which the limit frame 12B just breaks is the incremental pressure of the limit frame 12B. The critical pressure at which the gas pill 15B is ruptured is a pressure at which the gas generates the maximum pressure when the internal fuel in the gas pill 15B is completely burned. That is, the high-strength limiting frame 12B and the sleeve 13B wrap the gas pill 15B to prevent detonation, and high-pressure gas is ejected from the gas ejecting hole 16B after complete combustion.

The air pill 15B is nested in the sleeve 13B, the sleeve 13B wraps the side edge of the air pill 15B, the top end of the limiting frame 12B is arranged in close contact with the air pill base 14B, and the bottom of the limiting frame is arranged in close contact with the bottom of the air pill 15B or the bottom of the sleeve 13B. The sleeve 13B is used for radially and tightly nesting and wrapping the air pills 15B, and the thickness of the inner wall of the sleeve 13B is processed so that the air pills cannot deviate or expand and the like. The large gas pressure of the gas pill 15B is bound by the sleeve 13B, and all gas generated after all gas-generating materials in the gas pill 15B are combusted is subjected to all pressure in the sleeve 13B. The upper limiting frame 12B limits the upper end and the lower end of the high-pressure gas generated in the gas pill 15B in the vertical direction, so that the upper end and the lower end do not expand or burst and the like. A trigger signal input port is designed at the top end of the limiting frame 12B, and a trigger signal input terminal 11B is arranged on the trigger signal input port and used for receiving a lightning trigger signal by the air ball 15B. The fumarole 16B that spacing frame 12B established, gaseous 16B blowout and the injection direction of fumarole from this not parcel are controllable, diminish through the aperture of the fumarole 16B who establishes, and the position that sets up as required simultaneously realizes having realized the controllable condition of direction with the contrast of original detonation mode. The stop frame 12B and the sleeve 13B are made of high-strength material such as aluminum steel.

After the gas pill 15B receives the trigger signal input by the trigger signal input terminal 11B, gas is rapidly generated in the gas pill 15B, and the sleeve 13B and the limiting frame 12B cannot crack to generate detonation because the strength of the sleeve 13B and the limiting frame 12B is very good and is far greater than the pressure of the gas generated by the gas pill 15B. After the pressure intensity of the gas generated in the gas pill 15B is greater than the maximum bearing pressure of the surface layer of the gas pill 15B, the gas generated by the gas pill 15B can only be ejected from the gas ejecting holes 16B, so that the pressure intensity of the ejected gas is increased, and the operation of controllable gas ejecting direction is realized according to the setting size and the position of the gas ejecting holes 16B. And in the burning process of the gas pill 15B, the internal gas pressure is increased, so that the burning speed is higher, and the arc extinguishing reaction time is shorter.

The sleeve 13B is arranged to be a cylindrical structure, the cylindrical structure is composed of a plurality of detachable circular hoops, and the circular hoops are detachably connected with the circular hoops. The circle hoop passes through screw thread or buckle with the circle hoop and is connected to the height of the voltage of the power transmission line that can extinguish arc as required sets up the gas ball 15B of corresponding length, and when gas ball 15B width or diameter are fixed time, the voltage of the power transmission line that needs the arc extinguishing is higher, and gas ball 15B's length is longer more, makes the pressure of the gas of arc extinguishing higher, and the time of arc extinguishing is longer more, and the arc extinguishing effect is better, can extinguish the electric arc that higher voltage power transmission line produced. Meanwhile, the sleeve 13B can be conveniently installed, the number of the connecting circular hoops is increased according to the length of the air pills 15B, and the length of the air pills 15B is generally integral multiple of the length of the circular hoops.

The sleeve 13B is of a barrel structure, a barrel air vent is arranged at the bottom of the barrel structure, and the center of the barrel air vent and the center of the air vent 16B are arranged on the same straight line. The bottom of the drum structure is set to be a drum bottom structure, and then the drum bottom structure is provided with a drum air vent which is superposed with the air vent 16B.

The limiting frame 12B, the sleeve 13B and the material binding layer are made of similar metal materials, and the thicknesses of the limiting frame 12B and the sleeve 13B are in direct proportion to the amount of gunpowder. Because the lightning protection device is installed on the transmission line for a long time, the conditions of sun exposure and rain exposure can be caused, if different metals are used, a point potential difference is formed between the material binding layer and the radial sleeve piece or the wrapping layer, and the condition of corrosion can easily occur after the potential difference is formed, so that the service life of the lightning protection device is greatly shortened, and the same type of metal materials can be used for effectively preventing the conditions.

Example 9:

as shown in fig. 7, the gas generation assembly 7 includes a trigger signal input terminal 11C, a limiting barrel 12C, a sleeve 13C, a gas pill base 14C, a gas pill 15C and a gas injection hole 16C, the trigger signal input terminal 11C is disposed on the gas pill base 14C, the gas pill base 14C is connected with the gas pill 15C, the sleeve 13C is sleeved on the outer side of the gas pill 15C, the limiting barrel 12C is clamped on the outer sides of the sleeve 13C and the gas pill base 14C, the gas injection hole 16C is disposed on the limiting barrel 12C, pressure in the sleeve and the limiting barrel is increased, bending moment at the gas injection hole is increased, and high-pressure gas is injected. The sum of the base pressure of the gas ball 15C and the incremental pressure of the limiting barrel 12C and/or the incremental pressure of the sleeve 13C is larger than the critical pressure of gas generating material rupture in the gas ball 15C, and the limiting barrel 12C and the sleeve 13C are both set to be hard structures.

The air pill 15C is nested in the sleeve 13C, the sleeve 13C wraps the side edge of the air pill 15C, the top end of the limiting barrel 12C is arranged in close contact with the air pill base 14C, and the bottom of the limiting barrel is arranged in close contact with the bottom of the air pill 15C or the bottom of the sleeve 13C. The sleeve 13C radially and tightly nests and wraps the gas pill 15C, and the thickness of the inner wall of the sleeve 13C is processed, so that the gas pill cannot deviate or expand and the like. The large gas pressure of the gas pill 15C is bound by the sleeve 13C, and all the gas generated by the combustion of the gas-generating material in the gas pill 15C is subjected to all the pressures in the sleeve 13C. The upper and lower end of the high-pressure gas generated in the gas pill 15C is limited by the upper and lower limiting barrels 12C in the vertical direction, so that the upper and lower ends are not expanded or burst. The top of the limiting barrel 12C is provided with a trigger signal input port, and a trigger signal input terminal 11C is arranged on the trigger signal input port and used for receiving a lightning trigger signal by the air ball 15C. The fumarole 16C that spacing bucket 12C established, gaseous 16C blowout and the injection direction of this fumarole that does not wrap up are controllable from this, and the aperture through the fumarole 16C who establishes diminishes, and the position that sets up as required simultaneously realizes having realized the controllable condition of direction with the contrast of original detonation mode. The limiting barrel 12C and the sleeve 13C are made of high-strength materials such as aluminum steel.

After the gas pill 15C receives the trigger signal input by the trigger signal input terminal 11C, gas is rapidly generated in the gas pill 15C, and the sleeve 13C and the limiting barrel 12C are prevented from being broken to generate detonation conditions because the strength of the sleeve 13C and the limiting barrel 12C is very good and is far greater than the pressure of the gas generated by the gas pill 15C. After the pressure intensity of the gas generated in the gas pill 15C is greater than the maximum bearing pressure of the surface layer of the gas pill 5, the gas generated by the gas pill 15C can only be ejected from the gas ejecting hole 16C, so that the pressure intensity of the ejected gas is increased, and meanwhile, the operation of controllable gas ejecting direction is realized according to the setting size and the position of the gas ejecting hole C16. And in the burning process of the gas pill 15C, the internal gas pressure is increased, so that the burning speed is higher, and the arc extinguishing reaction time is shorter.

Example 10:

as shown in fig. 8, the gas generation assembly 7 includes a trigger signal input terminal 11D, an upper frame 12D, a sleeve 13D, a gas pill base 14D, a gas pill 15D, a lower frame 16D and a gas injection hole 17D, the trigger signal input terminal 11D is disposed on the gas pill base 14D, the gas pill base 14D is connected with the gas pill 15D, the sleeve 13D is sleeved on the outer side of the gas pill 15D, the upper frame 12D is detachably connected with the lower frame 16D, the upper frame 12D and the lower frame 16D are clamped on the outer sides of the sleeve 13D and the gas pill base 14D, the gas injection hole 17D is disposed on the lower frame 16D, the pressure inside the sleeve and the frame is increased, the bending moment at the gas injection hole is increased, and the high-pressure gas is injected. The sum of the base pressure of the gas pill 15D and the incremental pressure of the upper frame body 12D and the lower frame body 16D and/or the incremental pressure of the sleeve 13D is larger than the critical pressure of gas generation material rupture in the gas pill 15D, and the upper frame body 12D, the lower frame body 16D and the sleeve 13D are all set to be hard structures.

The airpills 15D are nested in the sleeve 13D, the sleeve 13D wraps the side edge of the airpills 15D, the inner side of the top end of the upper frame body 12D is in close contact with the airpill base 14D, and the inner side of the lower frame body 16D is in close contact with the bottom of the airpills 15D or the bottom of the sleeve 13D. The sleeve 13D radially and tightly nests and wraps the balloon 15D, and the thickness of the inner wall of the sleeve 13D is treated so that the balloon does not deflect or expand and the like. The large gas pressure of the gas pill 15D is confined by the sleeve 13D, and all the gas generated by the combustion of the gas-generating material in the gas pill 15D is subjected to all the pressures in the sleeve 13D. The upper frame body 12D and the lower frame body 16D limit the upper and lower ends of the high-pressure gas generated in the gas pill 15D in the vertical direction, so that the upper and lower ends do not expand or burst. The top of the upper frame body 12D is provided with a trigger signal input port, and a trigger signal input terminal 11D is arranged on the trigger signal input port and used for receiving a lightning trigger signal by the air ball 15D. The fumarole 17D that framework 16D was equipped with down, gaseous 17D blowout and the injection direction of this fumarole of not wrapping up of following is controllable, and the aperture through the fumarole 17D who establishes diminishes, and the position that sets up as required simultaneously realizes having realized the controllable condition of direction with the contrast of original detonation mode. The limiting barrel 12D and the sleeve 13D are made of high-strength materials such as aluminum steel.

After the gas pill 15D receives the trigger signal input by the trigger signal input terminal 11D, gas is rapidly generated in the gas pill 15D, and the sleeve 13D, the upper frame 12D and the lower frame 16D have good strength and are far greater than the pressure of the gas generated by the gas pill 15D, so that the sleeve 13D, the upper frame 12D and the lower frame 16D cannot crack to generate detonation. After the pressure intensity of the gas generated in the gas pill 15D is greater than the maximum bearing pressure of the surface layer of the gas pill 15D, the gas generated by the gas pill 15D can be ejected from the gas ejecting holes 17D, so that the pressure intensity of the ejected gas is increased, and the operation of controllable gas ejecting direction is realized according to the setting size and the position of the gas ejecting holes 17D. And in the burning process of the gas pill 15D, the internal gas pressure is increased, so that the burning speed is higher, and the arc extinguishing reaction time is shorter.

As shown in fig. 9, the effect of the gas generating assembly of the present invention is compared with the effect of the conventional gas generating device, the curve S1 is a graph showing the relationship between the time and the gas pressure of the arc extinguishing effect of the conventional gas generator, and the curve S2 is a graph showing the relationship between the time and the gas pressure of the arc extinguishing effect of the apparatus of the present invention. By comparison, it can be seen that the reaction time required for the conventional gas generator to start extinguishing the arc is t2, whereas the reaction time required for the device of the present application is t1, and t2 is greater than t 1. The contrast that causes this time difference does, the sleeve and the spacing bucket that this application device set up, the sleeve is to the radial restraint of air current, and spacing bucket is to the air current axial restraint, and the increase of pressure in the parcel layer, the moment of flexure improvement of jet orifice department, high atmospheric pressure air current jet. The sum of the base pressure of the gas pill and the incremental pressure of the sleeve is greater than the critical pressure of the gas pill fracture, and the sum of the base pressure of the gas pill and the incremental pressure of the upper frame body and the lower frame body is greater than the critical pressure of the gas pill fracture, so that the gas pill generates gas at the moment of being ignited, the upper frame body 2 and the lower frame body cannot deform, the gas pressure rises rapidly, a common gas generator can deform to a certain extent when generating gas, the volume is increased, and the gas pressure rises without the high pressure of the gas. According to the relationship between the burning rate and the pressure: the higher the pressure is, the higher the burning speed is, so that the burning speed in the gas pill 4 of the device is higher than the burning speed of fuel in the common gas generator, and the gas spraying time of the device is faster than the gas spraying time block of the common gas generator and the arc extinguishing reaction time.

Meanwhile, comparing the arc extinguishing pressure and the arc extinguishing time, the maximum pressure at the detonation moment of the common gas generator in the curve S1 is P1, and the time period for reaching the pressure is very short, only the moment of detonation is enough, so that the arc extinguishing effect is poor. In the device, the time for reaching the pressure P1 during arc extinction is the time period t1-t3, and the time period t1-t3 is longer than the whole arc extinction time of the common gas generator, so that the arc extinction effect is very good, and the arc generated by a larger voltage transmission line can be extinguished. The reason is that the gas of the device can only be ejected from the gas ejecting holes, and the common gas generator directly explodes and ejects in multiple directions, so that the time for high-voltage arc extinguishing is very short. The time process that the high-pressure gas of the device needs to be sprayed out from the gas spraying holes is t1-t3, so that the gas pressure for arc extinction is high, the time for spraying the gas is long, the arc extinction effect is better, and the arc extinction can be carried out on special occasions and arcs with higher voltage levels. The value of P2 is about ten times of that of P1, and the arc extinguishing gas injection pressure is stronger.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

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

1. A switching method of a telescopic arc extinguishing component by utilizing recoil force is characterized by comprising the following processes:

2. The switching method of a retractable arc extinguishing unit using recoil according to claim 1, wherein: in the step 1, a plurality of gas generation component storage grooves (5) for containing gas generation components are uniformly distributed on the peripheral edge of a disc-shaped turntable (6), a fixed limiting module is a bottom plate (3), the bottom plate (3) is fixed at the rear end of the turntable (6), a movable limiting module is arranged as an outer shell frame (1), the outer side of the turntable (6) is sleeved with the outer shell frame (1), the front end of the turntable (6) is in contact with a rotatable arrangement, an arc extinguishing cylinder module is arranged as an arc extinguishing cylinder (8) with an air hole inside, and the gas generation components fixed at the front end of the outer shell frame (1) are oppositely arranged with the turntable (6).

3. The switching method of the retractable arc extinguishing assembly using the recoil according to claim 2, wherein: the gas production assembly storage tank (5) is composed of two round holes with different inner diameters at two ends, the central lines of the two round holes are arranged on the same straight line, and the diameter of the round hole at the rear end of the rotary table (6) is larger than that of the round hole at the front end of the rotary table (6).

4. The switching method of the retractable arc extinguishing assembly using the recoil according to claim 2, wherein: in the step 1, the fixed limiting module elastically limits the bottom of the gas production assembly by using a spring (4), one end of the spring is fixed on the bottom plate (3), and the other end of the spring is fixed at the bottom of the gas production assembly.

5. The switching method of a retractable arc extinguishing unit using recoil according to claim 4, wherein: step 1-step 3, a gas generating assembly base is connected and contacted with a bottom plate (3) through a spring (4), one end of the gas generating assembly on a position to be triggered is contacted with an outer shell frame (1), the other end of the gas generating assembly on the position to be triggered is connected and contacted with the bottom plate (3) through the spring, the spring (4) is compressed under the action of pressure, and one end part of the gas generating assembly on the triggering position extends into an arc extinguishing cylinder (8) to be clamped; the other end of the spring is connected and contacted with the bottom plate (3) through the spring (4), the gas generating component on the trigger position is not restricted by the outer shell frame (1), the spring extends, and the raised part of the gas generating component in the gas generating component storage groove (5) limits the gas generating component base.

6. The switching method of a retractable arc extinguishing unit using recoil according to claim 5, wherein: the gas production assembly base is provided with two trigger signal input terminals which are arranged in the spring; one of the trigger signal input terminals is connected with the bottom plate (3) through a lead (10), the other trigger signal input terminal is connected with a metal shell of the gas generating assembly through a lead (10), metal electrodes are arranged on the upper surface of a convex part in each gas generating assembly storage groove (5) of the rotary disc (6), the metal electrodes are connected with one end of an induction coil (9) through the lead (10), and the other end of the induction coil (9) is connected with the bottom plate (3).

7. The switching method of a retractable arc extinguishing unit using recoil according to claim 1, wherein: the gas generating component comprises a trigger signal input terminal (11A), a wrapping layer (12A), a gas pill base (13A), a gas pill (14A) and a gas orifice (15A), the trigger signal input terminal (11A) is arranged on the air pill base (13A), the air pill (14A) is arranged on one side of the air pill base (13A), the wrapping layer (12A) is wrapped on the outer side of the air pill base (13A) and the air pill (14A), and is arranged in a bonding way, the bonding part of the wrapping layer (12A) and the air pill (14A) is provided with an air vent (15A), the coating (12A) is arranged as a hard layer, the gas pill (14A) is triggered to burn, the side wall of the wrapping layer (12A) radially restrains the gas pill (14A), the two ends of the wrapping layer axially restrain the gas pill (14A), and gas generated by the gas pill (14A) is ejected from the gas ejecting holes (15A).

8. The switching method of a retractable arc extinguishing unit using recoil according to claim 1, wherein: the gas production assembly comprises a trigger signal input terminal (11B), a limiting frame (12B), a sleeve (13B), a gas pill base (14B), a gas pill (15B) and gas spraying holes (16B), wherein the trigger signal input terminal (11B) is arranged on the gas pill base (14B), the gas pill base (14B) is connected with the gas pill (15B), the sleeve (13B) is sleeved on the outer side of the gas pill (15B), the limiting frame (12B) is clamped and sleeved on the outer sides of the sleeve (13B) and the gas pill base (14B), the gas spraying holes (16B) are arranged on the limiting frame (12B), the gas pill (15B) is triggered to burn to generate gas, the sleeve (13B) generates radial constraint on the gas, the limiting frame (12B) generates axial constraint on the gas, the burning speed in the gas pill (15B) is accelerated, and the gas is sprayed out from the gas spraying holes (16B), the limiting frame (12B) and the sleeve (13B) are both hard structures.

9. The switching method of a retractable arc extinguishing unit using recoil according to claim 1, wherein: the gas production assembly comprises a trigger signal input terminal (11C), a limiting barrel (12C), a sleeve (13C), a gas pill base (14C), a gas pill (15C) and a gas orifice (16C), the trigger signal input terminal (11C) is arranged on the gas pill base (14C), the gas pill base (14C) is connected with the gas pill (15C) and is arranged, the sleeve (13C) is sleeved on the outer side of the gas pill (15C), the limiting barrel (12C) is clamped and sleeved on the outer sides of the sleeve (13C) and the gas pill base (14C), the gas orifice (16C) is arranged on the limiting barrel (12C), the gas pill (15C) is triggered to burn, the sleeve (13C) radially restrains the gas pill (15C), the limiting barrel (12C) axially restrains the gas pill (14C), and gas generated by the gas pill (15C) is ejected from the gas orifice (16C), the limiting barrel (12C) and the sleeve (13C) are both of hard structures.

10. The switching method of a retractable arc extinguishing unit using recoil according to claim 1, wherein: the gas production assembly comprises a trigger signal input terminal (11D), an upper frame body (12D), a sleeve (13D), a gas pill base (14D), a gas pill (15D), a lower frame body (16D) and a gas spraying hole (17D), wherein the trigger signal input terminal (11D) is arranged on the gas pill base (14D), the gas pill base (14D) is connected with the gas pill (15D), the sleeve (13D) is sleeved on the outer side of the gas pill (15D), the upper frame body (12D) is detachably connected with the lower frame body (16D), the upper frame body (12D) and the lower frame body (16D) are clamped and sleeved on the outer sides of the sleeve (13D) and the gas pill base (14D), the gas spraying hole (17D) is arranged on the lower frame body (16D), the gas pill (15D) is triggered to burn to generate gas, the sleeve (13D) generates radial restraint on the gas, and the upper frame body (12D) and the lower frame body (16D) combine to generate axial restraint on the gas, the combustion speed of the fuel in the gas pill (15D) is accelerated, the gas is sprayed out from the gas spraying holes (17D), and the upper frame body (12D), the lower frame body (16D) and the sleeve (13D) are all of hard structures.