A high-voltage arc extinguishing device

Abstract

The present invention discloses a high-voltage arc extinguishing device, belonging to the field of high-voltage arc extinguishing, which includes a turntable and an arc extinguishing barrel assembly. A number of jet component storage grooves are provided on the turntable, and gas pressurizing components are placed in the jet component storage grooves. The arc extinguishing barrel assembly is hermetically arranged with the jet component storage grooves or the gas pressurizing components. The present invention can improve the safety ability of the solid-phase arc extinguishing and lightning protection device, and will not damage the external structure under the condition that the external structure is not strengthened; by improving the sealing strength of the gas generation unit to enhance the gas pressure, the gas generation material fuel burns more fully, the gas generation is more concentrated and the direction is controllable, further improving the arc extinguishing effect. The sealing component has a simple structure, well prevents the leakage of strong air flow, can ensure that the generated strong air flow acts on the arc maximally, and ingeniously combines the switching mechanism and the sealing structure. The structure is simple and the connection relationship is not complex, greatly enhancing the reliability of lightning protection and arc extinguishing.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage arc extinguishing, and particularly to a high-voltage arc extinguishing device. Background Art

[0002] Lightning protection of transmission lines has always been an important part of the lightning protection work of the power department. Lightning faults are still one of the important factors affecting the safety of the power grid. When a transmission line is struck by lightning, it causes the flashover of the line insulator, and the subsequent power-frequency follow current damages the insulator string and fittings, resulting in the burning of the insulator string and the breaking of the conductor. The existing lightning protection devices for transmission lines mainly use lightning protection gap devices for transmission lines. However, the key to lightning protection of the existing lightning protection gap devices is to use a gas generator for arc extinguishing treatment. However, the arc extinguishing effect of the existing gas generation device is not good. The direction of the gas ejected by the gas generation device is uncontrollable, and at the same time, the ejected gas pressure is not high enough, the ejection time is short, and the gas generation material cannot be completely burned, resulting in the inability to completely extinguish the arc.

[0003] The ejected air flow of the existing arc extinguishing barrel will leak at the connection between the arc extinguishing turntable and the arc extinguishing barrel. Considering that the non-concentrated air flow is not sufficient for the arc, the arc extinguishing ability and lightning protection effect of the arc extinguishing lightning arrester are affected. Therefore, it is hoped that the ejected air flow can act on the arc maximally and the intensity of the arc extinguishing air flow can be improved by improving the sealing performance of the arc extinguishing air flow channel, and a component with better sealing needs to be set.

[0004] After years of research, during the continuous research process and the actual application of the product, it is found that for some special occasions and higher voltage levels, a greater arc extinguishing gas pressure is required. Therefore, a high-voltage arc extinguishing device with a higher jet air pressure, a longer time, and a better sealing performance of the arc extinguishing barrel is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-voltage arc extinguishing device to solve the technical problems mentioned in the background art.

[0006] A high-voltage arc extinguishing device includes a turntable and an arc extinguishing barrel assembly. A number of jet component storage slots are provided on the turntable, and gas pressurizing components are placed in the jet component storage slots. The arc extinguishing barrel assembly is hermetically arranged with the jet component storage slots or the gas pressurizing components.

[0007] Further, the gas pressurization assembly includes a trigger signal input terminal, a wrapping layer, a pellet base, a pellet, and an air injection hole. The trigger signal input terminal is arranged on the pellet base. The pellet is arranged on one side of the pellet base. The wrapping layer wraps the outside of the pellet base and the pellet and is disposed in a fitting manner. An air injection hole is arranged at the fitting part of the wrapping layer and the pellet. The wrapping layer is set as a hard layer. When the pellet is triggered to burn, the side wall of the wrapping layer radially restricts the pellet, and both ends axially restrict the pellet. The gas generated by the pellet sprays out from the air injection hole.

[0008] Further, the gas pressurization assembly includes a trigger signal input terminal, a limit frame, a sleeve, a pellet base, a pellet, and an air injection hole. The trigger signal input terminal is arranged on the pellet base. The pellet base is connected to the pellet. The sleeve is sleeved on the outside of the pellet. The limit frame is clamped on the outside of the sleeve and the pellet base. An air injection hole is arranged on the limit frame. When the pellet is triggered to burn to generate gas, the sleeve radially restricts the gas, and the limit frame axially restricts the gas. The combustion speed in the pellet is accelerated, and the gas sprays out from the air injection hole. Both the limit frame and the sleeve are set as hard structures.

[0009] Further, the gas pressurization assembly includes a trigger signal input terminal, a limit barrel, a sleeve, a pellet base, a pellet, and an air injection hole. The trigger signal input terminal is arranged on the pellet base. The pellet base is connected to the pellet. The sleeve is sleeved on the outside of the pellet. The limit barrel is clamped on the outside of the sleeve and the pellet base. An air injection hole is arranged on the limit barrel. When the pellet is triggered to burn, the sleeve radially restricts the pellet, and the limit barrel axially restricts the pellet. The gas generated by the pellet sprays out from the air injection hole. Both the limit barrel and the sleeve are set as hard structures.

[0010] Further, the gas pressurization assembly includes a trigger signal input terminal, an upper frame body, a sleeve, a pellet base, a pellet, a lower frame body, and an air injection hole. The trigger signal input terminal is arranged on the pellet base. The pellet base is connected to the pellet. The sleeve is sleeved on the outside of the pellet. The upper frame body and the lower frame body are detachably connected, and the upper frame body and the lower frame body are clamped on the outside of the sleeve and the pellet base. The air injection hole is arranged on the lower frame body. When the pellet is triggered to burn to generate gas, the sleeve radially restricts the gas, and the combination of the upper frame body and the lower frame body axially restricts the gas. The combustion speed of the fuel in the pellet is accelerated, and the gas sprays out from the air injection hole. The upper frame body, the lower frame body, and the sleeve are all set as hard structures.

[0011] Further, a sealing package is sleeved outside the gas pressurization assembly. The outlet of the sealing package is arranged in a conical tube structure. A support housing is arranged on the arc extinguishing barrel assembly. The bottom of the support housing is sleeved into the arc extinguishing barrel assembly. A spring is sleeved outside the bottom of the support housing. The bottom of the spring is fixedly connected to the arc extinguishing barrel assembly. A U-shaped sealing ring is arranged inside the support housing. The conical tube structure of the sealing package is sleeved into the upper port of the support housing. The gas pressurization assembly sprays high-pressure gas. The high-pressure gas enters the arc extinguishing barrel assembly through the conical tube structure of the sealing package and the support housing. The conical tube structure of the sealing package is sleeved into the support housing and is hermetically connected to the U-shaped sealing ring. After the high-pressure gas enters the support housing, the support housing squeezes the spring, and the conical tube structure of the sealing package disengages from the support housing. The turntable rotates, and the support housing is nested and clamped with the next sealing package.

[0012] Further, a sealing sleeve frame is sleeved outside the turntable. A sealing sleeve is arranged at the upper end of the arc extinguishing barrel assembly. The sealing sleeve is sleeved in the jet component storage groove for sealed docking. A spring is arranged between the sealing sleeve and the arc extinguishing barrel assembly. When the gas pressurization assembly sprays high-pressure gas, the high-pressure gas presses the sealing sleeve, and the spring contracts. The sealing sleeve disengages from the jet component storage groove. The turntable rotates, and the sealing sleeve is clamped into the next jet component storage groove of the turntable.

[0013] Further, a circular groove is arranged on the turntable. A plurality of jet component storage grooves are arranged at the bottom of the groove. A concave clamping groove is arranged on the side of the bottom of the groove. A clamping member is arranged in the groove. The clamping member is arranged in a barrel shape and is connected to the arc extinguishing barrel assembly at one end. A clamping edge is arranged on the side of the clamping member. The clamping edge is clamped in the clamping groove. A sealing ring is arranged on the side of the clamping edge in contact with the jet component storage groove. A spring is arranged on the other side of the clamping edge.

[0014] The present invention adopts the above technical solutions, and the present invention has the following technical effects:

[0015] (1) The present invention can improve the safety ability of the solid-phase arc extinguishing and lightning protection device and will not damage the external structure under the condition that the external structure is not strengthened; by improving the sealing strength of the gas production unit to enhance the gas pressure, the gas production material fuel burns more fully, the gas production is more concentrated and the direction is controllable, further improving the arc extinguishing effect.

[0016] (2) By setting the sum of the base pressure of the gas pill and the incremental pressure of the wrapping layer to be greater than the critical pressure for the rupture of the gas pill, it is ensured that no detonation occurs even after the gas-producing material inside the gas pill is completely burned. The hard-layer wrapping layer wraps the gas pill base and the gas pill, and the wrapping layer radially and axially restricts the airflow. The incremental pressure inside the wrapping layer increases rapidly, and the burning rate of the gas-producing material (gunpowder) inside the gas pill becomes faster. When the gas pressure reaches a value greater than the rupture limit pressure of the material binding layer at the gas ejection hole, the high-pressure gas sprays out from the gas ejection hole, and the aperture of the gas ejection hole is reduced. The bending moment of the material at the gas ejection hole becomes larger, the internal gas pressure increases, and the direction of the jet is controllable. At the same time, the time for jet arc extinguishing is longer, the response time for arc extinguishing is faster, and a better arc extinguishing effect is achieved.

[0017] The sealing component of this application has a simple structure, effectively prevents the leakage of strong airflow, and can ensure that the generated strong airflow acts on the arc to the maximum extent. It ingeniously combines the switching mechanism and the sealing structure into one, with a simple structure and an uncomplicated connection relationship, greatly enhancing the reliability of lightning protection and arc extinguishing. When the gas-producing element generates strong airflow inside the turntable, the sealing interface connection component at the top of the arc extinguishing cylinder can move up and down (vibrate) under the action of elastic force for sealing contact, and it is ensured that there is no left-right deviation, improving the reliability of lightning protection and arc extinguishing. This sealing component structure also improves the safety of arc extinguishing and lightning protection. Brief Description of the Drawings

[0018] Figure 1 It is a sectional view of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the turntable of the present invention.

[0020] Figure 3 It is a comparison diagram of the arc extinguishing effect of the gas pressure boosting component of the present invention and the arc extinguishing effect of a common gas generator.

[0021] Figure 4 It is a sectional view of three shapes of the first structure of the gas pressure boosting component of the present invention.

[0022] Figure 5 It is a sectional view of four shapes of the second structure of the gas pressure boosting component of the present invention.

[0023] Figure 6 It is a sectional view of two shapes of the third structure of the gas pressure boosting component of the present invention.

[0024] Figure 7 It is a sectional view of four shapes of the fourth structure of the gas pressure boosting component of the present invention.

[0025] Figure 8 It is a sectional view of the sealing connection structure between the gas pressure boosting component and the arc extinguishing barrel component of the present invention.

[0026] Figure 9 It is a sectional view of the sealed connection structure between the jet component storage groove and the arc extinguishing barrel component of the present invention.

[0027] Figure 10 It is a sectional view of the turntable of the present invention provided with a groove structure.

[0028] Figure 11 It is a sectional view of the connection structure between the turntable of the present invention provided with a groove structure and the arc extinguishing barrel component.

[0029] Reference numerals in the figure: 1 - turntable; 2 - jet component storage groove; 3 - gas pressurization component; 4 - arc extinguishing barrel component; 11A - trigger signal input terminal; 12A - wrapping layer; 13A - air pill base; 14A - air pill; 15A - air injection hole; 16A - bottom wall; 11B - trigger signal input terminal; 12B - limit frame; 13B - sleeve; 14B - air pill base; 15B - air pill; 16B - air injection hole; 17B - sealing ring gasket; 18B - base support; 11C - trigger signal input terminal; 12C - limit barrel; 13C - sleeve; 14C - air pill base; 15C - air pill; 16C - air injection hole; 17C - bottom wall; 18C - sealing ring gasket; 11D - trigger signal input terminal; 12D - upper frame body; 13D - sleeve; 14D - air pill base; 15D - air pill; 16D - lower frame body; 17D - air injection hole; 18D - sealing ring gasket; 19D - frame connecting piece; 5 - sealing package; 6 - support housing; 7 - U-shaped sealing ring; 8 - spring; 9 - sealing sleeve; 10 - spring; 11 - sealing sleeve frame; 12 - groove; 13 - card slot; 14 - buckle piece; 15 - spring; 16 - sealing ring. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following provides preferred embodiments with reference to the accompanying drawings and further elaborates on the present invention in detail. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0031] The following explains some technical principles used in the present invention:

[0032] Bending moment is a kind of internal moment on a stressed member. Popular saying: Bending moment is a kind of moment. Its standard definition is: the resultant couple moment of the distributed internal force system perpendicular to the cross-section; calculation formula: M = θ·EI / L, where θ is the torque, EI is the rotational stiffness, and L is the effective calculation length of the rod.

[0033] According to the characteristics of the bending moment, since the high-strength wrapping layer wraps the gas-generating material, the burning rate of the gas-generating material increases, the combustion integrity improves, the pressure inside the wrapping layer increases, the bending moment at the gas ejection hole increases, and high-pressure gas flows are ejected.

[0034] The relationship between the burning rate and the pressure satisfies the following formula: u n = a + bP v ; The influence of pressure on the burning rate is the greatest. Within a certain range, the greater the pressure, the greater the burning rate, and high pressure may turn into detonation. Mechanism of explosive combustion turning into detonation: The sealing strength is improved, and the combustion products have no time to diffuse, causing the pressure in the reaction zone to continuously increase, resulting in an increase in the burning rate. When the burning rate reaches the critical value, the combustion is destroyed and turns into detonation.

[0035] The process of explosive combustion propagates in the form of a combustion reaction wave. The energy in the reaction zone during the propagation of the combustion wave is transmitted outward through heat conduction, radiation, and the diffusion of combustion gas products. Therefore, the combustion propagation speed is related to factors such as explosive properties, pressure, charge diameter, and the presence or absence of a casing.

[0036] Reasons for the increase in explosive burning rate with increasing pressure: 1. At high pressure, the collision probability of gas-phase activated molecules is high, and the gas-phase reaction rate is high; 2. At high pressure, the penetration of gas-phase high-temperature products into the condensed-phase explosive increases. Therefore, in the solid-phase arc extinguishing and lightning protection device, the burning rate of the gas pill can be controlled by controlling the pressure in the space where the gas pill is located.

[0037] Example 1:

[0038] Please refer to Figure 1 , the present invention provides a high-voltage arc extinguishing device, including a turntable 1 and an arc extinguishing barrel assembly 4. A number of jet assembly storage slots 2 are provided on the turntable 1, and a gas pressurizing assembly 3 is placed in the jet assembly storage slot 2. The arc extinguishing barrel assembly 4 is hermetically arranged with the jet assembly storage slot 2 or the gas pressurizing assembly 3. After being triggered, the gas pressurizing assembly 3 generates high-pressure gas, and the high-pressure gas is instantaneously ejected and ejected from the arc extinguishing barrel assembly 4 for arc extinguishing. Since the arc extinguishing barrel assembly 4 is hermetically arranged with the jet assembly storage slot 2 or the gas pressurizing assembly 3, gas leakage or loss can be greatly reduced. At the same time, compared with the existing gas-generating assemblies, the gas pressurizing assembly 3 ejects gas at a higher pressure, making the ejection time longer and the arc extinguishing effect better.

[0039] Example 2:

[0040] As Figure 4As shown, the gas pressurization assembly 3 includes a trigger signal input terminal 11A, a wrapping layer 12A, a gas pill base 13A, a gas pill 14A, and an air injection hole 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 wraps around the outside of the gas pill base 13A and the gas pill 14A and is arranged in a fitting manner. An air injection hole 15A is arranged at the fitting part of the wrapping layer 12A and the gas pill 14A. The wrapping layer 12A is set as a hard layer. When the pressure inside the wrapping layer 12A increases, the bending moment at the air injection hole 15A increases, and high-pressure airflows are ejected. The sum of the base pressure of the gas pill 14A and the incremental pressure of the wrapping layer 12A is greater than the critical pressure for the gas pill 14A to rupture.

[0041] The gas pill base 13A and the gas pill 14A are nested into the wrapping layer 12A, and the wrapping layer wraps them up. And a tight nesting of the gas pill base 13A and the gas pill 14A with the wrapping layer 12A can be achieved. The inner wall thickness of the wrapping layer 2 can be processed so that it will not shift or expand, etc. The huge air pressure of the gas pill 14A is constrained by the wrapping layer 12A, and all the gases generated after the combustion of all the gas-producing materials in the gas pill 14A are under all the pressure borne by the wrapping layer 12A. A trigger signal input port is designed at the top of the wrapping layer 12A, and a trigger signal input terminal 11A is arranged on the trigger signal input port for the gas pill 14A to receive lightning trigger signals. The wrapping layer 12A is provided with an air injection hole 15A. The gas sprays out from this uncovered air injection hole 15A and the spraying direction is controllable. By making the aperture of the provided air injection hole 15A smaller and setting the position according to needs, a situation where the jet direction is controllable is achieved in comparison with the original detonation method. The wrapping layer 12A uses high-strength materials such as aluminum steel, etc.

[0042] After the gas pill 14A receives the trigger signal input from the trigger signal input terminal 1, gases are rapidly generated inside the gas pill 14A. Since the strength of the wrapping layer 12A is very good, far greater than the pressure of the gases generated by the gas pill 14A, the wrapping layer 12A will not rupture to cause a detonation situation. When the gas pressure generated inside the gas pill 4 is greater than the maximum bearing pressure of the surface layer of the gas pill 4, all the gases generated by the gas pill 4 can only spray out from the air injection hole 15A, thereby increasing the pressure of the sprayed gases. At the same time, an operation with a controllable jet direction is achieved according to the set size and position of the air injection hole 15A. And during the combustion process of the gas pill 14A, the internal gas pressure increases, making the combustion speed faster and the arc extinguishing reaction time shorter.

[0043] The air vent 15A is arranged at the opposite end of the trigger signal input terminal 11A, and the trigger signal input terminal 11A is arranged in contact with the gas pellet 14A. By arranging the air vent 15A and the trigger signal input terminal 11A at the opposite ends, the air pressure can be instantaneously pressed against the material confinement layer of the air vent 5 only after the gunpowder in the structure of the gas pellet 14A burns completely, so that the gas-producing material in the gas pellet 14A burns more completely and the gas pressure is greater, which can extinguish the arc generated by higher-voltage power transmission and make the arc extinguishing effect better.

[0044] The gas pellet 14A includes a material confinement layer, gunpowder, and solid oxygen or liquid oxygen. The gunpowder and solid oxygen or liquid oxygen are mixed and sealed in the material confinement layer. The rupture pressure value of the material confinement layer is much smaller than the pressure increment value in the wrapping layer, and the incremental pressure of the material confinement layer is less than the critical pressure for the rupture of the gunpowder.

[0045] After the gunpowder is ignited, the solid oxygen or liquid oxygen provides the oxygen for combustion, and as the temperature rises, both the solid oxygen or liquid oxygen will vaporize, providing an additional gas pressure to form a secondary pressure boost effect, making the gas pressure increase faster. When the gas pressure generated when the gunpowder is basically completely burned is greater than the critical pressure for the rupture of the material confinement layer, the material confinement layer at the air vent 5 ruptures, and the gas sprays out from the air vent 5 to extinguish the arc.

[0046] The trigger signal input terminal 11A is arranged in contact with the gunpowder inside the gas pellet by arranging a plurality of heating resistance wires. The plurality of heating resistance wires are arranged in parallel and are connected to the trigger signal input terminal. By arranging the heating resistance wires in parallel, the effect of multi-point ignition is achieved, the reaction time can be shortened, that is, the reaction time for arc extinguishing can be shortened, and the arc extinguishing is faster.

[0047] The trigger signal input terminal 11A inputs a current signal, causing the resistance wire to heat up. The gunpowder inside the gas pill burns to generate high-pressure gas. The wrapping layer 12A axially and radially confines the high-pressure gas, increasing the pressure inside the wrapping layer. The bending moment at the gas ejection hole is increased. When the pressure of the high-pressure gas is greater than the bending moment of the material binding layer at the gas ejection hole, the high-pressure gas sprays out from the gas ejection hole. The position of the gas ejection hole 15A is set to control the jet direction. When the gas pill 4 receives the electrical signal from the trigger signal input terminal 1, a large amount of arc extinguishing gas is triggered to be generated. The high-strength wrapping layer 12A radially and axially confines the airflow, and the incremental pressure inside the wrapping layer 12A rapidly increases. Since the high-strength wrapping layer wraps the gas-generating material, the burning rate of the gas-generating material increases and the combustion integrity improves. The pressure inside the wrapping layer increases, the bending moment at the gas ejection hole increases, and high-pressure airflow is ejected. Since the strength at the air outlet is much smaller than that of the wrapping layer 12A and the aperture of the gas ejection hole 15A becomes smaller, a large bending moment is generated. When the sum of the base pressure of the gas pill 14A and the incremental pressure of the wrapping layer is greater than the critical pressure for the rupture of the gas-generating material, the airflow sprays from the uncovered air outlet. The jet direction of the air outlet is controllable, the jet airflow is concentrated and strong, and the arc extinguishing effect is greatly improved. By increasing the sealing strength, the materials inside the gas pill 14A burn fully to generate a greater critical release air pressure, generating a high-speed arc extinguishing airflow while the power frequency arc is being established, acting on the arc channel, blocking the subsequent power frequency arc establishment process, and being able to extinguish the power frequency arc in an extremely short time. The arc extinguishing time is much shorter than the breaker operation time. Among them, the gas generation of the arc extinguishing unit directly affects the arc extinguishing effect.

[0048] The wrapping layer 12A is set as a cylindrical structure. The inner wall of the cylindrical structure is closely attached to the gas pill base 13A and the gas pill 14A. The bottom of the cylindrical structure is set as an open structure, and a bottom wall 16A is provided on the side of the bottom of the cylindrical structure. After the gas pill base 13A and the gas pill 14A are sleeved in, the bottom wall 16A is mechanically squeezed to fold inward at a 90° angle with the side wall. The gas ejection hole 15A is provided at the top of the cylindrical structure. The input port of the trigger signal input terminal 11A is provided on the wrapping layer 12A. During installation, the gas pill base 13A and the gas pill 14A are sleeved into the inner cylinder of the wrapping layer 12A together, and then the bottom wall 16A is squeezed inward by an extrusion machine. The bottom wall 16A mainly fixes the gas pill base 13A. When high-pressure gas is generated, a front-back tension will be generated, which is fixed by the bottom wall 16A. The thickness of the bottom wall 16A is thicker than the thickness of the other end of the cylindrical structure. Being set as a cylindrical structure has the advantages of convenient installation, simple processing, and can greatly save processing costs and improve economic benefits.

[0049] The wrapping layer 12A is arranged in a box structure, on which a fastening cover is arranged, and the fastening cover is fastened to the box structure through the arranged buckles. The air pill base 13A and the air pill 14A are placed into the box structure, wherein the internal structure arranged in the box structure is the same as that of the air pill base 13A and the air pill 14A, and can be cylindrical, square or convex head structure, etc., and can be set by mold opening during the processing of the box structure. After the air pill base 13A and the air pill 14A are sleeved, the fastening cover is covered, and then buckled by the buckle, which is convenient for installation and can be directly completed by hand, with the advantages of fast processing speed and high economy.

[0050] The size of the air jet hole 15A is 5 - 8 mm, and the gas generated by the air pill 14A is ejected from the air jet hole. The air flow is ejected from the unwrapped air jet hole 15A, and the ejection direction of the air jet hole 15A is controllable, and the ejected air flow is concentrated and strong, greatly improving the arc extinguishing effect. The general original ejection holes are generally more than a dozen millimeters, resulting in too large an ejection range and a short ejection time, and the arc extinguishing effect is not good. According to the bending moment calculation formula: M = θ·EI / L, where θ is the torque, EI is the rotational stiffness, and L is the effective calculation length of the rod. When θ is the torque and EI is the rotational stiffness are the same, after L becomes shorter, the bending moment becomes larger, that is, the pressure of the ejected gas becomes larger, and the air jet hole 16A is smaller, and the same gas takes a longer time to be ejected, that is, the arc extinguishing time is longer, achieving an increase in the arc extinguishing gas pressure and an increase in the arc extinguishing time, and achieving a better arc extinguishing effect.

[0051] The wrapping layer 12A and the material binding layer are made of the same type of metal material, and the thickness of the wrapping layer 12A is proportional to the amount of gunpowder. Since the lightning protection device is installed on the transmission line for a long time, it will be exposed to sunlight and rain. If different metals are used, a potential difference will be formed between the material binding layer and the radial kit or the wrapping layer, and after the potential difference is formed, corrosion is likely to occur, thus greatly shortening the service life of the lightning protection device. Using the same type of metal material can effectively prevent the occurrence of the above situation.

[0052] Example 3:

[0053] Such as Figure 5As shown, the gas boosting assembly 3 includes a trigger signal input terminal 11B, a limit frame 12B, a sleeve 13B, a gas pellet base 14B, a gas pellet 15B, and an air injection hole 16B. The trigger signal input terminal 11B is disposed on the gas pellet base 14B. The gas pellet base 14B is connected to the gas pellet 15B. The sleeve 13B is sleeved outside the gas pellet 15B. The limit frame 12B is sleeved outside the sleeve 13B and the gas pellet base 14B. The limit frame 12B is provided with the air injection hole 16B. When the pressure inside the sleeve and the limit frame increases, the bending moment at the air injection hole increases, and high-pressure air flows are ejected. The sum of the base pressure of the gas pellet 15B and the incremental pressure of the limit frame 12B or the incremental pressure of the sleeve 13B is greater than the critical pressure for the gas-producing material inside the gas pellet 15B to rupture. Both the limit frame 12B and the sleeve 13B are provided as rigid structures.

[0054] The base pressure of the gas pellet 15B is the reaction force of the extrusion force when the gunpowder wrapped inside the gas pellet 15B is extruded when the gas pellet 15B does not burn. That is, when the sleeve 13B is tightly wrapped with the gas pellet 15B, the gas pellet 15B will generate an outward tension on the sleeve 13B, which is the base pressure of the gas pellet 15B. The incremental pressure of the sleeve 13B is the pressure added outward to the sleeve 13B, and the limit pressure at which the sleeve 13B just ruptures 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, and the limit pressure at which the limit frame 12B just ruptures is the incremental pressure of the limit frame 12B. The critical pressure for the gas pellet 15B to rupture is the pressure when the internal fuel inside the gas pellet 15B is completely burned and the pressure of the generated gas is at its maximum. That is, the high-strength limit frame 12B and the sleeve 13B wrapping the gas pellet 15B will not cause detonation, but after complete combustion, the high-pressure gas is ejected from the air injection hole 16B.

[0055] The gas pill 15B is nested inside the sleeve 13B. The sleeve 13B wraps around the side of the gas pill 15B. The top of the limit frame 12B is in close contact with the bottom of the gas pill base 14B, and the bottom is in close contact with the bottom of the gas pill 15B or the bottom of the sleeve 13B. The sleeve 13B tightly nests and wraps the gas pill 15B radially, and the thickness of the inner wall of the sleeve 13B is processed so that it will not shift or expand, etc. The huge air pressure of the gas pill 15B is constrained by the sleeve 13B, and all the gases generated after the combustion of the gas-producing materials in the gas pill 15B are under all the pressures borne by the sleeve 13B. In the vertical direction, the limit frame 12B limits the high-pressure gas generated in the gas pill 15B at the upper and lower ends, so that the upper and lower ends do not expand or burst, etc. The top of the limit frame 12B is designed with a trigger signal input port, and a trigger signal input terminal 11B is arranged on the trigger signal input port for the gas pill 15B to receive the lightning trigger signal. The limit frame 12B is provided with an air jet hole 16B, and the gas jets out from this uncovered air jet hole 16B and the jet direction is controllable. By making the aperture of the set air jet hole 16B smaller and setting the position according to needs, the situation of controllable direction is realized in comparison with the original detonation method. The limit frame 12B and the sleeve 13B are made of high-strength materials, such as aluminum steel, etc.

[0056] After the gas pill 15B receives the trigger signal input by the trigger signal input terminal 11B, gas is quickly generated inside the gas pill 15B. Since the strength of the sleeve 13B and the limit frame 12B is very good, far greater than the pressure of the gas generated by the gas pill 15B, the sleeve 13B and the limit frame 12B will not rupture and cause a detonation situation. After the pressure of the gas generated inside the gas pill 15B is greater than the maximum bearing pressure on the surface layer of the gas pill 15B, all the gases generated by the gas pill 15B can only jet out from the air jet hole 16B, so that the pressure of the jetting gas increases, and at the same time, the jetting direction can be controlled according to the set size and position of the air jet hole 16B. And during the combustion process of the gas pill 15B, the internal gas pressure increases, making the combustion speed faster and the arc extinguishing reaction time shorter.

[0057] The sleeve 13B is set as a cylindrical structure, and the cylindrical structure is composed of several detachable circular hoops, and the circular hoops are detachably connected to each other. The circular hoops are connected by threads or buckles, so that the length of the gas pill 15B can be set according to the voltage level of the transmission line to be arc extinguished. When the width or diameter of the gas pill 15B is certain, the higher the voltage of the transmission line to be arc extinguished, the longer the length of the gas pill 15B, so that the pressure of the arc extinguishing gas is higher, the arc extinguishing time is longer, and the arc extinguishing effect is better, and the arc generated by the transmission line with a higher voltage can be extinguished. At the same time, it is also convenient for the installation of the sleeve 13B. According to the length of the gas pill 15B, the number of connected circular hoops is determined. Generally, the length of the gas pill 15B is an integer multiple of the length of the circular hoop.

[0058] The sleeve 13B is arranged in a cylindrical structure, and a cylindrical jet orifice is arranged at the bottom of the cylindrical structure. The center of the cylindrical jet orifice and the center of the jet orifice 16B are arranged on the same straight line. The bottom of the cylindrical structure is arranged as a bottom structure of the barrel, and then a cylindrical jet orifice is opened in the bottom structure of the barrel, and the cylindrical jet orifice coincides with the jet orifice 16B.

[0059] The limiting frame 12B, the sleeve 13B and the material confinement layer are made of the same type of metal material. The thicknesses of the limiting frame 12B and the sleeve 13B are proportional to the amount of gunpowder. Since the lightning protection device is installed on the transmission line for a long time, it will be exposed to sunlight and rain. If different metals are used, a potential difference will be formed between the material confinement layer and the radial kit or the wrapping layer. After the potential difference is formed, corrosion will easily occur, thus greatly shortening the service life of the lightning protection device. Using the same type of metal material can effectively prevent the occurrence of the above situation.

[0060] Embodiment 4:

[0061] As Figure 6 shown, the gas boosting assembly 3 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 jet orifice 16C. The trigger signal input terminal 11C is arranged on the gas pill base 14C. The gas pill base 14C is connected to the gas pill 15C. The sleeve 13C is sleeved outside the gas pill 15C. The limiting barrel 12C is sleeved outside the sleeve 13C and the gas pill base 14C. A jet orifice 16C is arranged on the limiting barrel 12C. The pressure inside the sleeve and the limiting barrel increases, the bending moment at the jet orifice increases, and high-pressure air flow is ejected. The sum of the base pressure of the gas pill 15C, the incremental pressure of the limiting barrel 12C and / or the incremental pressure of the sleeve 13C is greater than the critical pressure for the rupture of the gas-producing material inside the gas pill 15C. Both the limiting barrel 12C and the sleeve 13C are arranged as rigid structures.

[0062] The gas pill 15C is nested inside the sleeve 13C, and the sleeve 13C wraps around the side of the gas pill 15C. The top of the limiting barrel 12C is in close contact with the base of the gas pill 14C, and the bottom is in close contact with the bottom of the gas pill 15C or the bottom of the sleeve 13C. The sleeve 13C tightly nests and wraps the gas pill 15C radially, and the thickness of the inner wall of the sleeve 13C is processed so that it will not shift or expand, etc. The huge air pressure of the gas pill 15C is constrained by the sleeve 13C, and all the gases generated after the combustion of the gas-producing materials in the gas pill 15C are under all the pressures borne by the sleeve 13C. In the vertical direction, the limiting barrel 12C limits the high-pressure gas generated inside the gas pill 15C at the upper and lower ends, so that the upper and lower ends will not expand or burst, etc. The top of the limiting barrel 12C is designed with a trigger signal input port, and a trigger signal input terminal 11C is arranged on the trigger signal input port for the gas pill 15C to receive the lightning trigger signal. The limiting barrel 12C is provided with an air jet hole 16C, and the gas jets out from this uncovered air jet hole 16C and the jet direction is controllable. By making the aperture of the provided air jet hole 16C smaller and setting the position according to needs, the situation of controllable direction is realized in comparison with the original detonation method. The limiting barrel 12C and the sleeve 13C are made of high-strength materials, such as aluminum steel, etc.

[0063] After the gas pill 15C receives the trigger signal input by the trigger signal input terminal 11C, gas is quickly generated inside the gas pill 15C. Since the strength of the sleeve 13C and the limiting barrel 12C is very good, far greater than the pressure of the gas generated by the gas pill 15C, the sleeve 13C and the limiting barrel 12C will not rupture and cause a detonation situation. After the pressure of the gas generated inside the gas pill 15C is greater than the maximum bearing pressure on the surface layer of the gas pill 5, all the gas generated by the gas pill 15C can only jet out from the air jet hole 16C, so that the pressure of the jetted gas increases, and at the same time, the operation of controllable jet direction is realized according to the set size and position of the air jet hole C16. And during the combustion process of the gas pill 15C, the internal gas pressure increases, making the combustion speed faster and the arc extinguishing reaction time shorter.

[0064] Embodiment 5:

[0065] As Figure 7As shown, the gas boosting assembly 3 includes a trigger signal input terminal 11D, an upper frame 12D, a sleeve 13D, a gas pellet base 14D, a gas pellet 15D, a lower frame 16D, and an air jet hole 17D. The trigger signal input terminal 11D is arranged on the gas pellet base 14D. The gas pellet base 14D is connected to the gas pellet 15D. The sleeve 13D is sleeved outside the gas pellet 15D. The upper frame 12D and the lower frame 16D are detachably connected, and the upper frame 12D and the lower frame 16D are sleeved outside the sleeve 13D and the gas pellet base 14D. The air jet hole 17D is arranged on the lower frame 16D. The pressure inside the sleeve and the frame increases, the bending moment at the air jet hole increases, and high-pressure air flows are ejected. The sum of the base pressure of the gas pellet 15D, the incremental pressure of the upper frame 12D and the lower frame 16D, and / or the incremental pressure of the sleeve 13D is greater than the critical pressure for the rupture of the gas-producing material inside the gas pellet 15D. The upper frame 12D, the lower frame 16D, and the sleeve 13D are all arranged as rigid structures.

[0066] The gas pellet 15D is nested inside the sleeve 13D, and the sleeve 13D wraps around the side of the gas pellet 15D. The inner side of the top end of the upper frame 12D is in close contact with the gas pellet base 14D. The inner side of the lower frame 16D is in close contact with the bottom of the gas pellet 15D or in close contact with the bottom of the sleeve 13D. The sleeve 13D tightly nests and wraps the gas pellet 15D radially, and the thickness of the inner wall of the sleeve 13D is processed so that it will not shift or expand, etc. The huge air pressure of the gas pellet 15D is constrained by the sleeve 13D, and all the gases generated after the combustion of the gas-producing materials inside the gas pellet 15D are under all the pressures borne by the sleeve 13D. In the vertical direction, the upper frame 12D and the lower frame 16D limit the high-pressure gas generated inside the gas pellet 15D at the upper and lower ends, so that no expansion or explosion occurs at the upper and lower ends. The top end of the upper frame 12D is designed with a trigger signal input port, and a trigger signal input terminal 11D is arranged on the trigger signal input port for the gas pellet 15D to receive lightning trigger signals. The lower frame 16D is provided with an air jet hole 17D, and the gas is ejected from this uncovered air jet hole 17D and the ejection direction is controllable. By making the aperture of the provided air jet hole 17D smaller and setting the position as required, the situation of controllable direction is realized in comparison with the original detonation method. The limiting barrel 12D and the sleeve 13D are made of high-strength materials, such as aluminum steel, etc.

[0067] After the gas pill 15D receives the trigger signal input from the trigger signal input terminal 11D, gas is rapidly generated inside the gas pill 15D. Since the strength of the sleeve 13D, the upper frame 12D, and the lower frame 16D is very good, far greater than the pressure of the gas generated by the gas pill 15D, the sleeve 13D, the upper frame 12D, and the lower frame 16D will not rupture and cause a detonation situation. After the gas pressure generated inside the gas pill 15D is greater than the maximum bearing pressure on the surface layer of the gas pill 15D, the gas generated by the gas pill 15D can only be ejected from the air injection holes 17D, thereby increasing the pressure of the ejected gas. At the same time, the direction of the ejected gas can be controlled according to the set size and position of the air injection holes 17D. And during the combustion process of the gas pill 15D, the internal gas pressure increases, making the combustion speed faster and the arc extinguishing reaction time shorter.

[0068] As Figure 3 shown, for the comparison of the effects of Embodiment 2-5 and the existing gas generating devices, the curve S1 is the relationship diagram of the arc extinguishing effect time and gas pressure of a common gas generator, and the curve S2 represents the relationship diagram of the arc extinguishing effect time and gas pressure of the device of the present invention. Through comparison, it can be known that the reaction time required for the common gas generator to start arc extinguishing is t2, while the reaction time required for using the device of the present application is t1, and t2 is greater than t1. The reason for this time difference is that the sleeve and the limiting barrel are provided in the device of the present application. The sleeve radially restricts the air flow, and the limiting barrel axially restricts the air flow. The pressure inside the wrapping layer increases, and the bending moment at the air injection hole increases, and the high-pressure air flow is ejected. The sum of the basic pressure of the gas pill and the incremental pressure of the sleeve is greater than the critical pressure for the gas pill to rupture. At the same time, the sum of the basic pressure of the gas pill and the incremental pressure of the upper frame and the lower frame is greater than the critical pressure for the gas pill to rupture, so that when the gas pill is ignited, gas is generated and the upper frame 2 and the lower frame will not deform, and the gas pressure rises rapidly. While a common gas generator will undergo a certain deformation and increase in volume when generating gas, resulting in a lower gas pressure rise than that of the gas in the present application. According to the relationship between the burning rate and the pressure: the greater the pressure, the greater the burning rate, so that the burning speed of the gas pill 4 in this device will be faster than the burning speed of the fuel in a common gas generator. Therefore, the jetting time of this device will be faster than that of a common gas generator, and the arc extinguishing reaction time is faster.

[0069] Compare the arc extinguishing pressure and the arc extinguishing time. The maximum pressure at the detonation moment of the curve S1 ordinary gas generator is P1, and the time period to reach this pressure is very short, only at the moment of detonation, resulting in poor arc extinguishing effect. In the device of the present application, the time to reach the pressure P1 during arc extinguishing is the period from t1 to t3, which is also the high-voltage arc extinguishing time. The time t1 - t3 is longer than the entire arc extinguishing time of the ordinary gas generator. Therefore, the arc extinguishing effect is very good, and the arcs generated by larger voltage transmission lines can all be extinguished. The reason for the above is that the gas in this device can only be ejected from the air injection holes, while the ordinary gas generator directly detonates and sprays in multiple directions, making the high-voltage arc extinguishing time very short. The high-pressure gas in this device needs a time process from t1 to t3 to be ejected from the air injection holes. Therefore, the arc extinguishing gas pressure is high and the gas ejection time is long, making the arc extinguishing effect better, and the arcs in special occasions and higher voltage levels can be sprayed and extinguished. Among them, the value of P2 is about ten times that of P1, with a stronger arc extinguishing spray pressure.

[0070] Example 6:

[0071] As Figure 8 shown, a sealing package 5 is sleeved outside the gas boosting component 3. The air outlet of the sealing package 5 is set as a conical tube structure. A support housing 6 is arranged on the arc extinguishing barrel component 4. The bottom of the support housing 6 is sleeved into the arc extinguishing barrel component 4. A spring 8 is sleeved outside the bottom of the support housing 6. The bottom of the spring 8 is fixedly connected to the arc extinguishing barrel component 4. A U-shaped sealing ring 7 is arranged inside the support housing 6. The conical tube structure of the sealing package 5 is sleeved into the upper port of the support housing 6. The gas boosting component 3 sprays high-pressure gas. The high-pressure gas enters the arc extinguishing barrel component 4 through the conical tube structure of the sealing package 5 and the support housing 6. The conical tube structure of the sealing package 5 is sleeved into the support housing 6 and is hermetically connected to the U-shaped sealing ring 7. After the high-pressure gas enters the support housing 6, the support housing 6 squeezes the spring 8, and the conical tube structure of the sealing package 5 disengages from the support housing 6. The turntable 1 rotates, and the support housing 6 is nested and clamped with the next sealing package 5. The sealing package 5, the support housing 6, the U-shaped sealing ring 7 and the spring 8 can cooperate with each other to achieve better tightness when spraying high-pressure gas, and at the same time can meet the rotation requirements of the turntable 1. When the gas boosting component 3 sprays high-pressure gas, the sealing package 5 will be instantaneously impacted and move into the support housing 6, so that the conical tube structure contacts the U-shaped sealing ring 7 to form a good sealing effect. When the high-pressure gas enters the support housing 6, it impacts the inside of the support housing 6, the spring 8 is compressed, the support housing 6 moves downward, the sealing package 5 disengages from the support housing 6, the turntable 1 rotates, and when the high-pressure gas enters the arc extinguishing barrel component 4, the spring 8 resumes, and the support housing 6 is clamped into the next sealing package 5, so as to achieve continuous arc extinguishing and at the same time have good tightness.

[0072] Example 7:

[0073] As Figure 9 shown, a sealing sleeve frame 11 is sleeved outside the turntable 1, a sealing sleeve 9 is arranged at the upper end of the arc extinguishing barrel assembly, the sealing sleeve 9 is sleeved and hermetically docked in the jet component storage groove 2, a spring 10 is arranged between the sealing sleeve 9 and the arc extinguishing barrel assembly 4. When the gas pressurizing assembly 3 ejects high-pressure gas, the high-pressure gas presses against the sealing sleeve 9, the spring 10 contracts, the sealing sleeve 9 disengages from the jet component storage groove 2, the turntable 1 rotates, and the sealing sleeve 9 is caught in the next jet component storage groove 2 of the turntable 1. When the gas pressurizing assembly 3 ejects high-pressure gas, the sealing sleeve 9 is impacted, the spring 10 compresses and drives the sealing sleeve 9 to move downward, the sealing sleeve 9 disengages from the jet component storage groove 2, the turntable 1 rotates, when the high-pressure gas enters the arc extinguishing barrel assembly 4, the spring 10 resumes, and the sealing sleeve 9 is caught in the next jet component storage groove 2, so that continuous arc extinguishing can be realized, and at the same time, good sealing performance can be achieved.

[0074] Embodiment 8:

[0075] As Figure 10 - 11 shown, a circular groove 12 is arranged on the turntable 1, several jet component storage grooves 2 are arranged at the bottom of the groove 12, a clamping groove 13 recessed inward is arranged on the side of the bottom of the groove 12, a clamping member 14 is arranged in the groove 12, the clamping member 14 is arranged in a barrel shape, one end is connected to the arc extinguishing barrel assembly 4, a clamping edge is arranged on the side of the clamping member 14, the clamping edge is caught in the clamping groove 13, a sealing ring 16 is arranged on the side of the clamping edge in contact with the jet component storage groove 2, and a spring 15 is arranged on the other side of the clamping edge. The groove 12 provides a sliding track for the clamping member 14, so that it can be well fixed to the turntable 1 and at the same time, contact sealing can be realized.

[0076] The foregoing shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0077] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high-voltage arc extinguishing device, characterized in that, It includes a turntable (1) and an arc extinguishing barrel assembly (4). A number of jet component storage grooves (2) are provided on the turntable (1), and a gas pressurizing component (3) is placed in the jet component storage groove (2). The arc extinguishing barrel assembly (4) is hermetically arranged with the jet component storage groove (2) or the gas pressurizing component (3). A sealing sleeve frame (11) is sleeved outside the turntable (1). A sealing sleeve (9) is provided at the upper end of the arc extinguishing barrel assembly. The sealing sleeve (9) is sleeved in the jet component storage groove (2) for sealed docking. A second spring (10) is provided between the sealing sleeve (9) and the arc extinguishing barrel assembly (4). When the gas pressurizing component (3) ejects high-pressure gas, the high-pressure gas presses the sealing sleeve (9), the second spring (10) contracts, the sealing sleeve (9) disengages from the jet component storage groove (2), the turntable (1) rotates, and the sealing sleeve (9) snaps into the next jet component storage groove (2) of the turntable (1). A circular groove (12) is provided on the turntable (1). A number of jet component storage grooves (2) are provided at the bottom of the groove (12). A card slot (13) recessed inward is provided on the side of the bottom of the groove (12). A buckle member (14) is provided in the groove (12). The buckle member (14) is arranged in a barrel shape and is connected to the arc extinguishing barrel assembly (4) at one end. A card edge is provided on the side of the buckle member (14). The card edge is stuck in the card slot (13). A sealing ring (16) is provided on the side of the card edge in contact with the jet component storage groove (2), and a third spring (15) is provided on the other side of the card edge.

2. The high-voltage arc extinguishing device according to claim 1, characterized in that: The gas pressurizing component (3) includes a trigger signal input terminal (11A), a wrapping layer (12A), a gas pellet base (13A), a gas pellet (14A), and an air jet hole (15A). The trigger signal input terminal (11A) is provided on the gas pellet base (13A). The gas pellet (14A) is provided on one side of the gas pellet base (13A). The wrapping layer (12A) wraps outside the gas pellet base (13A) and the gas pellet (14A) and is attached. An air jet hole (15A) is provided at the attachment of the wrapping layer (12A) and the gas pellet (14A). The wrapping layer (12A) is set as a hard layer. When the gas pellet (14A) is triggered to burn, the side wall of the wrapping layer (12A) radially constrains the gas pellet (14A), and both ends axially constrain the gas pellet (14A). The gas generated by the gas pellet (14A) is ejected from the air jet hole (15A).

3. A high-voltage arc extinguishing device according to claim 1, characterized in that: The gas pressurization assembly (3) includes a trigger signal input terminal (11B), a limit frame (12B), a sleeve (13B), a gas pellet base (14B), a gas pellet (15B), and an air injection hole (16B). The trigger signal input terminal (11B) is disposed on the gas pellet base (14B). The gas pellet base (14B) is connected to the gas pellet (15B). The sleeve (13B) is sleeved outside the gas pellet (15B). The limit frame (12B) is sleeved outside the sleeve (13B) and the gas pellet base (14B). The limit frame (12B) is provided with the air injection hole (16B). The gas pellet (15B) is triggered to burn to generate gas. The sleeve (13B) radially constrains the gas. The limit frame (12B) axially constrains the gas. The combustion speed in the gas pellet (15B) is accelerated, and the gas is ejected from the air injection hole (16B). Both the limit frame (12B) and the sleeve (13B) are provided with a rigid structure.

4. A high-voltage arc extinguishing device according to claim 1, characterized in that: The gas pressurization assembly (3) includes a trigger signal input terminal (11C), a limit barrel (12C), a sleeve (13C), a gas pellet base (14C), a gas pellet (15C), and an air injection hole (16C). The trigger signal input terminal (11C) is disposed on the gas pellet base (14C). The gas pellet base (14C) is connected to the gas pellet (15C). The sleeve (13C) is sleeved outside the gas pellet (15C). The limit barrel (12C) is sleeved outside the sleeve (13C) and the gas pellet base (14C). The limit barrel (12C) is provided with the air injection hole (16C). The gas pellet (15C) is triggered to burn. The sleeve (13C) radially constrains the gas pellet (15C). The limit barrel (12C) axially constrains the gas pellet (15C). The gas generated by the gas pellet (15C) is ejected from the air injection hole (16C). Both the limit barrel (12C) and the sleeve (13C) are provided with a rigid structure.

5. A high-voltage arc extinguishing device according to claim 1, characterized in that: The gas boosting assembly (3) includes a trigger signal input terminal (11D), an upper housing (12D), a sleeve (13D), a gas pellet base (14D), a gas pellet (15D), a lower housing (16D), and a gas jet hole (17D). The trigger signal input terminal (11D) is arranged on the gas pellet base (14D). The gas pellet base (14D) is connected to the gas pellet (15D). The sleeve (13D) is sleeved outside the gas pellet (15D). The upper housing (12D) is detachably connected to the lower housing (16D), and the upper housing (12D) and the lower housing (16D) are sleeved outside the sleeve (13D) and the gas pellet base (14D). The gas jet hole (17D) is arranged on the lower housing (16D). The gas pellet (15D) is triggered to burn to generate gas. The sleeve (13D) generates radial restraint on the gas. The upper housing (12D) and the lower housing (16D) cooperate to generate axial restraint on the gas. The burning speed of the fuel in the gas pellet (15D) is accelerated, and the gas is ejected from the gas jet hole (17D). The upper housing (12D), the lower housing (16D), and the sleeve (13D) are all arranged as rigid structures.

6. The high-voltage arc extinguishing device according to claim 1, characterized in that: A sealing package (5) is sleeved outside the gas boosting assembly (3). The outlet of the sealing package (5) is arranged as a conical tube structure. A support housing (6) is arranged on the arc extinguishing barrel assembly (4). The bottom of the support housing (6) is inserted into the arc extinguishing barrel assembly (4). A first spring (8) is sleeved outside the bottom of the support housing (6). The bottom of the first spring (8) is fixedly connected to the arc extinguishing barrel assembly (4). A U-shaped sealing ring (7) is arranged inside the support housing (6). The conical tube structure of the sealing package (5) is sleeved on the upper port of the support housing (6). The gas boosting assembly (3) sprays high-pressure gas. The high-pressure gas enters the arc extinguishing barrel assembly (4) through the conical tube structure of the sealing package (5) and the support housing (6). The conical tube structure of the sealing package (5) is sleeved inside the support housing (6) and is hermetically connected to the U-shaped sealing ring (7). After the high-pressure gas enters the support housing (6), the support housing (6) compresses the first spring (8), and the conical tube structure of the sealing package (5) disengages from the support housing (6). The turntable (1) rotates, and the support housing (6) is nested and clamped with the next sealing package (5).

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