A combined gas supercharging device

Abstract

The present invention discloses a combined gas supercharging device, belonging to the field of lightning protection devices for transmission lines, which includes a trigger signal input terminal, an upper frame body, a sleeve, a gas pellet base, a gas pellet, a lower frame body, and an air jet hole. The trigger signal input terminal is arranged on the gas pellet base, the gas pellet base is connected with the gas pellet, the sleeve is sleeved outside the gas pellet, the upper frame body is detachably connected with the lower frame body, and the upper frame body and the lower frame body are sleeved outside the sleeve and the gas pellet base, and the air jet hole is arranged on the lower frame body. This device can improve the safety ability of the solid-phase arc extinguishing lightning protection device and will not damage the external structure under the condition that the external structure is not strengthened. This device enhances the gas pressure by improving the sealing strength of the external structure for gas production, making the fuel combustion of the gas production material more sufficient, the gas production more concentrated and the direction controllable, and further improving the arc extinguishing effect.

Description

Technical Field

[0001] The present invention relates to the field of lightning protection devices for transmission lines, and particularly to a combined gas pressurizing device. Background Art

[0002] Lightning protection of transmission lines has always been an important part of the lightning protection work of the power department, and lightning faults are still one of the important factors affecting the safety of the power grid. When a transmission line is struck by lightning, the line insulator flashes over, and the subsequent power frequency follow current damages the insulator string and fittings, resulting in the burning of the insulator string and the burning and breaking of the conductor.

[0003] 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 generating device is not good, the direction of the gas ejected by the gas generating device is uncontrollable, the pressure of the ejected gas is not high enough, the ejection time is short, and the gas generating material cannot be completely burned, resulting in the inability to completely extinguish the arc.

[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 gas pressurizing device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined gas pressurizing device to solve the technical problems that the gas pressure and the arc extinguishing gas time of the existing gas generating device cannot meet special occasions and higher voltage levels.

[0006] A combined gas pressurizing device includes a trigger signal input terminal, an upper frame body, a sleeve, a gas pill base, a gas pill, a lower frame body, and an air jet hole. The trigger signal input terminal is arranged on the gas pill base, the gas pill base is connected with the gas pill, the sleeve is sleeved outside the gas pill, the upper frame body and the lower frame body are detachably connected, and the upper frame body and the lower frame body are sleeved outside the sleeve and the gas pill base. The air jet hole is arranged on the lower frame body. The gas pill is triggered to burn to generate gas. The sleeve generates radial constraint on the gas. The upper frame body and the lower frame body are combined to generate axial constraint on the gas. The combustion speed of the fuel in the gas pill is accelerated, the gas is ejected from the air jet hole, the pressure in the sleeve and the frame body increases, the bending moment at the air jet hole is increased, and a high-pressure gas flow is ejected. The upper frame body, the lower frame body, and the sleeve are all arranged as hard structures.

[0007] Further, the upper frame body and the lower frame body are detachably connected by arranging frame body connectors. The frame body connectors are cylindrical thread connectors, snap connectors, slide rail connectors, rotation misalignment connectors, and barbed rotation connectors.

[0008] Further, both the upper frame body and the lower frame body are set as cylindrical structures. The openings of the two cylindrical structures face each other and are connected by a threaded connection or an arc-shaped slide rail. A trigger signal input hole is provided on the upper frame body, and a waterproof ring is provided on the trigger signal input hole.

[0009] Further, both the upper frame body and the lower frame body are set as concave frame structures. The openings of the two concave frame structures face each other and are connected by a snap connection, a slide rail connection or a rotational dislocation connection. A trigger signal input hole is provided on the upper frame body, and a waterproof ring is provided on the trigger signal input hole.

[0010] Further, the above solution further includes a sealing ring gasket. The sealing ring gasket is provided at the edge of the air jet hole. The sealing ring gasket is provided between the lower frame body and the air pellet and is in close contact.

[0011] Further, the sleeve is set as a cylindrical structure. A cylindrical air jet opening is provided at the bottom of the cylindrical structure. The centers of the cylindrical air jet opening and the air jet hole are arranged on the same straight line. The sleeve is composed of a plurality of detachable circular hoops, and the circular hoops are detachably connected to each other.

[0012] Further, the air pellet 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 inside the frame body.

[0013] Further, the trigger signal input terminal is in contact with the gunpowder inside the air pellet by arranging a plurality of heating resistance wires. The plurality of heating resistance wires are connected in parallel and are connected to the trigger signal input terminal.

[0014] Further, the upper frame body, the lower frame body, the sleeve and the material confinement layer are made of the same type of metal material. The thicknesses of the limiting barrel and the sleeve are proportional to the amount of gunpowder.

[0015] Further, the size of the air jet hole is 5-8 mm, and the gas generated by the air pellet is ejected from the air jet hole.

[0016] The present invention adopts the above technical solution, and the present invention has the following technical effects:

[0017] (1) This device can improve the safety ability of the solid-phase arc extinguishing and lightning protection device. Without strengthening the external structure, the external structure will not be damaged.

[0018] (2) This device enhances the gas pressure by improving the sealing strength of the external structure for gas production, making the fuel combustion of the gas-producing material more complete, the generated gas more concentrated and the direction controllable, and further improving the arc extinguishing effect.

[0019] (3) The device accelerates the burning rate of the gas-producing material through high-strength wrapping, improves the combustion integrity, and makes the combustion more complete. The sleeve radially restricts the airflow, and the frame axially restricts the airflow. The pressure inside the sleeve and the frame increases, the bending moment at the air jet holes increases, and high-pressure airflow is ejected. After the gas-producing material in the gas pill is completely burned, no detonation will occur. The sleeve surrounds the periphery of the gas pill, and the upper frame and the lower frame perform front-back clamping on the gas pill base and the gas pill. The sleeve radially restricts the airflow, and the upper frame and the lower frame axially restrict the airflow. The incremental pressure inside the gas pill increases rapidly, and the burning speed of the gas-producing material (gunpowder) inside the gas pill is faster. When the gas pressure reaches greater than the rupture limit pressure of the material binding layer at the air jet holes, the high-pressure gas sprays out from the air jet holes, and the aperture of the air jet holes is reduced. The bending moment of the material at the air jet holes becomes larger, the internal gas pressure increases, and the direction of the jet is controllable. At the same time, the arc extinguishing time of the jet is longer, the reaction time of arc extinguishing is faster, and the arc extinguishing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a sectional view of the threaded connection structure of the upper and lower frames of the present invention.

[0021] Figure 2 It is a sectional view of another structure of the threaded connection of the upper and lower frames of the present invention.

[0022] Figure 3 It is a sectional view of the slide rail connection structure of the upper and lower frames of the present invention.

[0023] Figure 4 It is a sectional view of another structure of the slide rail connection of the upper and lower frames of the present invention.

[0024] Figure 5 It is a schematic diagram of the resistance wire design structure of the present invention.

[0025] Figure 6 It is a comparison diagram of the arc extinguishing effect of the present invention and the arc extinguishing effect of a common gas generator.

[0026] Figure 7 It is a schematic diagram of one structure of the sleeve of the present invention.

[0027] Figure 8 It is a schematic diagram of another structure of the sleeve of the present invention.

[0028] Figure 9 It is a schematic diagram of one structure of the upper and lower frames of the present invention.

[0029] Figure 10 It is a schematic diagram of another structure of the upper and lower frames of the present invention.

[0030] In the figure: 1 - Trigger signal input terminal, 2 - Upper housing, 3 - Sleeve, 4 - Gas pill base, 5 - Gas pill, 6 - Lower housing, 7 - Air jet hole, 8 - Sealing ring gasket, 9 - Housing connecting piece, 10 - Circular hoop, 11 - Trigger signal input hole. Detailed implementation mode

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the following preferred embodiments are cited with reference to the accompanying drawings to further elaborate on the present invention. However, it should be noted that many details listed in the specification are only for 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 realized even without these specific details.

[0032] The following is an explanation of some technical principles used in the present invention:

[0033] Bending moment is a type 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 member.

[0034] According to the characteristics of the bending moment, due to the high-strength wrapping, the burning rate of the gas-generating material is accelerated, the combustion integrity is improved, and the combustion is more complete. The sleeve radially restricts the airflow, and the housing axially restricts the airflow. The pressure inside the sleeve and the housing increases, the bending moment at the air jet hole increases, and high-pressure airflow is ejected. Since the strength at the air outlet is much smaller than that of the wrapping layer, a large bending moment will be generated, making the ejected airflow concentrated and intense, greatly improving the arc extinguishing effect; moreover, the pressure increment can be controlled by controlling the area size of the unwrapped air outlet, so that the sum of the basic pressure of the gas-generating material itself and the incremental pressure of the wrapping layer is much greater than the critical pressure for the gas-generating material to rupture.

[0035] The relationship between the burning rate and 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 increase continuously, resulting in an increase in the burning rate. When the burning rate reaches the critical value, the combustion is destroyed and turns into detonation.

[0036] 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.

[0037] Reasons for the increase in the burning rate of explosives 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.

[0038] Based on the above principle description and reference Figures 1 - 10 Further description of the embodiments of the present invention:

[0039] Embodiment 1:

[0040] A combined gas boosting device, as Figures 1 - 4 shown, includes a trigger signal input terminal 1, an upper frame body 2, a sleeve 3, a gas pill base 4, a gas pill 5, a lower frame body 6, and an air jet hole 7. The trigger signal input terminal 1 is arranged on the gas pill base 4. The gas pill base 4 is connected to the gas pill 5. The sleeve 3 is sleeved outside the gas pill 5. The upper frame body 2 and the lower frame body 6 are detachably connected, and the upper frame body 2 and the lower frame body 6 are sleeved outside the sleeve 3 and the gas pill base 4. The air jet hole 7 is arranged on the lower frame body 6. The sum of the base pressure of the gas pill 5 and the incremental pressure of the upper frame body 2 and the lower frame body 6 and / or the incremental pressure of the sleeve 3 is greater than the critical pressure for the rupture of the gas-producing material in the gas pill 5. The pressure in the sleeve and the frame body increases, the bending moment at the air jet hole increases, and high-pressure air flows are ejected. The upper frame body 2, the lower frame body 6, and the sleeve 3 are all set as rigid structures. Among them, the width of the gas pill base 4 is generally wider than that of the gas pill 5. The gas pill 5 is set as a cylindrical structure or a square structure, etc. Other structures not mentioned are within the protection scope of this application. The structure of the sleeve 3 is the same as the structural shape of the gas pill 5 and is closely attached to the outside of the gas pill 5. The upper frame body 2 fixes the gas pill base 4, the lower frame body 6 supports the gas pill 5, and the air jet hole 7 is arranged on the lower frame body 6. The inner sides of the side walls of the upper frame body 2 and the lower frame body 6 are in contact or not in contact with the gas pill base 4 and the gas pill 5.

[0041] The gas pill 5 is nested inside the sleeve 3, and the sleeve 3 wraps around the side of the gas pill 5. The inner side of the top of the upper frame body 2 is in close contact with the base of the gas pill 4, and the inner side of the lower frame body 6 is in close contact with the bottom of the gas pill 5 or in close contact with the bottom of the sleeve 3. The sleeve 3 tightly nests and wraps the gas pill 5 radially, and the thickness of the inner wall of the sleeve 3 is processed so that it will not shift or expand, etc. The huge air pressure of the gas pill 5 is constrained by the sleeve 3, and all the gases generated after the combustion of all the gas-producing materials in the gas pill 5 are under all the pressures borne by the sleeve 3. In the vertical direction, the upper frame body 2 and the lower frame body 6 limit the high-pressure gas generated inside the gas pill 5 at the upper and lower ends, so that the upper and lower ends will not expand or burst, etc. The top of the upper frame body 2 is designed with a trigger signal input port, and a trigger signal input terminal 1 is arranged on the trigger signal input port for the gas pill 5 to receive the lightning trigger signal. The lower frame body 6 is provided with an air jet hole 7, and the gas is ejected from this uncovered air jet hole 7 and the ejection direction is controllable. By making the aperture of the provided air jet hole 7 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 2 and the sleeve 3 are made of high-strength materials, such as aluminum steel, etc.

[0042] After the gas pill 5 receives the trigger signal input by the trigger signal input terminal 1, gas is quickly generated inside the gas pill 5. Since the strengths of the sleeve 3, the upper frame body 2 and the lower frame body 6 are very good, far greater than the pressure of the gas generated by the gas pill 5, the sleeve 3, the upper frame body 2 and the lower frame body 6 will not rupture and cause a detonation situation. After the gas pressure generated inside the gas pill 5 is greater than the maximum bearing pressure on the surface layer of the gas pill 5, all the gas generated by the gas pill 5 can only be ejected from the air jet hole 7, so that the pressure of the ejected 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 7. And during the combustion process of the gas pill 5, the internal gas pressure increases, making the combustion speed faster and the arc extinguishing reaction time shorter.

[0043] Such as Figure 6As shown, curve S1 is a graph showing the relationship between time and gas pressure for the arc extinguishing effect of a conventional gas generator, and curve S2 represents the graph showing the relationship between time and gas pressure for the arc extinguishing effect of the device of the present invention. By comparison, it can be known that the reaction time required for the conventional 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 3 and the radial sleeve of the limit barrel 2 provided in the device of the present application radially constrain the air flow, and the limit barrel axially constrains the air flow. The pressure inside the sleeve and the limit barrel increases, the bending moment at the air injection hole increases, and high-pressure air flow is ejected. The sum of the base pressure of the air pellet 5 and the incremental pressure of the sleeve 3 is greater than the critical pressure for the rupture of the air pellet 4. At the same time, the sum of the base pressure of the air pellet 5 and the incremental pressure of the upper frame body 2 and the lower frame body 6 is greater than the critical pressure for the rupture of the air pellet 4, so that when the air pellet 4 is ignited, gas is generated and the upper frame body 2 and the lower frame body 6 do not deform, and the gas pressure rises rapidly. While the conventional gas generator will undergo certain deformation and volume increase when generating gas, resulting in the gas pressure rising not as high as 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 fuel in the air pellet 4 of the present device will be faster than that of the fuel in the conventional gas generator. Therefore, the jetting time of the present device will be faster than that of the conventional gas generator, that is, the arc extinguishing reaction time is faster.

[0044] At the same time, comparing the arc extinguishing pressure and the arc extinguishing time, the maximum pressure at the detonation moment of the conventional gas generator in curve S1 is P1, and the time period to reach this pressure is very short, only at the moment of detonation, so that the arc extinguishing effect is not good. In the device of the present application, the time to reach the pressure P1 during arc extinguishing is the time period from t1 - t3, which is also called the high-pressure arc extinguishing time. The time t1 - t3 is longer than the entire arc extinguishing time of the conventional gas generator. Therefore, the arc extinguishing effect is very good, and arcs generated by larger voltage transmission lines can be extinguished. The reason for the above is that the gas of this device can only be ejected from the air injection hole 7, while the conventional gas generator directly detonates and sprays in multiple directions, making the time of high-pressure arc extinguishing very short. And the high-pressure gas of this device needs a time process of t1 - t3 to be ejected from the air injection hole 7. Therefore, the arc extinguishing gas pressure is high and the jetting time of the gas is long, making the arc extinguishing effect better, and 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 jet pressure.

[0045] Example 2:

[0046] The upper frame body 2 and the lower frame body 6 are detachably connected by setting a frame body connecting piece 9. The frame body connecting piece 9 is a cylindrical threaded connecting piece, a snap connecting piece, a slide rail connecting piece, a rotation misalignment connecting piece, and a barb rotation connecting piece. It is set as an upper and lower frame body structure, which is more convenient for installation, can well reduce the cost, and improve economic benefits. During installation, directly buckle the upper frame body 2 and the lower frame body 6 at both ends of the air pellet base 4 and the air pellet 5, and then tighten them by threads or snap them in. Among them, when using snaps, mechanical automation is generally used to tighten the snaps. The upper frame body 2 and the lower frame body 6 are set to be detachably connected. Except for the above detachable methods, other detachable methods are within the protection scope of this application.

[0047] Embodiment 3:

[0048] Both the upper frame body 2 and the lower frame body 6 are set as cylindrical structures. The openings of the two cylindrical structures face each other and are connected by threads or arc slide rails. A trigger signal input hole 11 is provided on the upper frame body 2, and a waterproof ring is provided on the trigger signal input hole 11. Being set as a cylindrical structure can better protect the air pellet base 4 and the air pellet 5 in a fully enclosed manner, and being set as a closed structure of a cylinder can prevent air leakage during air injection, better improving the air injection pressure and air injection time. Among them, the openings of the upper frame body 2 and the lower frame body 6 are detachably connected, and the diameters of the upper frame body 2 and the lower frame body 6 do not have to be the same. One can be larger and the other smaller as long as they can be connected at the openings.

[0049] Embodiment 4:

[0050] Both the upper frame body 2 and the lower frame body 6 are set as concave frame structures. The openings of the two concave frame structures face each other and are connected by snap connections, slide rail connections, or rotation misalignment connections. A trigger signal input hole 11 is provided on the upper frame body 2, and a waterproof ring is provided on the trigger signal input hole 11. Both the upper frame body 2 and the lower frame body 6 include a cross plate and two side plates. The two ends of the two side plates are respectively connected to the opposite sides of the cross plate. Then the side plates on the same side of the upper frame body 2 and the lower frame body 6 are mutually snapped. The upper frame body 2 and the lower frame body 6 are set as rectangular empty frame or rectangular empty frame structures. Using the empty frame structure can save a large amount of materials. A pressurization device can save 1 yuan in material costs and processing costs. During mass production, it can greatly improve the economic benefits of users.

[0051] Embodiment 5:

[0052] The embodiment of the present invention further includes a sealing gasket 8, which is arranged at the edge of the air injection hole 7. The sealing gasket 8 is arranged between the lower frame body 6 and the air pellet 5 and is in close contact. In order to increase the tightness between the lower frame body 6 and the air pellet 5, a sealing gasket is added at the gap of the air outlet of the lower frame body 6. The sealing gasket 8 mainly cooperates with the sleeve 3 at the bottom opening. The sealing gasket 8 can limit the size of the gas ejection port to be the same as that of the air injection hole 7, making the bending moment on the outer layer of the air pellet 5 larger, so that the internal air pressure increases following the increase of the bending moment, and the ejected air pressure is higher. The sealing gasket 8 is made of an elastic material.

[0053] Embodiment 6:

[0054] The sleeve 3 is arranged in a cylindrical structure, and a cylindrical air jet port is arranged at the bottom of the cylindrical structure. The center of the cylindrical air jet port and the center of the air injection hole 7 are arranged on the same straight line. The sleeve 3 is composed of several detachable circular hoops 10, and the circular hoops 10 are detachably connected to each other. The bottom of the cylindrical structure is set as a bottom structure of the barrel, and then a cylindrical air jet port is opened on the bottom structure of the barrel, and the cylindrical air jet port coincides with the air injection hole 7. The circular hoops 10 are connected by threads or buckles, so that the air pellet 5 with corresponding length can be set according to the voltage level of the transmission line to be arc-extinguished. When the width or diameter of the air pellet 5 is certain, the higher the voltage of the transmission line to be arc-extinguished, the longer the length of the air pellet 5, 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 3. According to the length of the air pellet 5, the number of circular hoops 10 to be connected is determined. Generally, the length of the air pellet 5 is an integer multiple of the length of the circular hoop 10.

[0055] Embodiment 7:

[0056] The air pellet 5 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 inside the sleeve and the frame body, and the incremental pressure of the material confinement layer is less than the critical pressure of gunpowder rupture. After the gunpowder is ignited, the solid oxygen or liquid oxygen provides oxygen for combustion, and the temperature rises. Both the solid oxygen or liquid oxygen will vaporize, providing an additional gas pressure to form a secondary pressure increase effect, making the gas pressure increase faster. When the gas pressure generated by the gunpowder during almost complete combustion is greater than the critical pressure of the material confinement layer rupture, the material confinement layer at the air injection hole 7 ruptures, and the gas sprays out from the air injection hole 7 for arc extinguishing.

[0057] Embodiment 8:

[0058] The trigger signal input terminal 1 is arranged in contact with the gunpowder inside the gas pill 5 by setting 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 of arc extinction can be shortened, and the arc extinction is faster.

[0059] The air jet hole 7 is arranged at the opposite end of the trigger signal input terminal 1, and the trigger signal input terminal 1 is arranged in contact with the gas pill 5. By arranging the air jet hole 7 and the trigger signal input terminal 1 at the opposite ends, the air pressure will instantaneously press on the material binding layer of the air jet hole 7 only after the gunpowder in the gas pill 5 structure burns completely, so that the gas-producing material in the gas pill 5 burns more completely and the gas pressure is greater, and the arc generated by transmitting a higher voltage can be extinguished, making the arc extinction effect better.

[0060] The trigger signal input terminal 1 inputs a current signal, the resistance wire generates heat, the gunpowder in the gas pill burns to generate high-pressure gas, the upper frame body 2 and the lower frame body 6 axially restrict the high-pressure gas, the sleeve 3 radially restricts the high-pressure gas, the pressure of the high-pressure gas is greater than the bending moment of the material binding layer at the air jet hole, the pressure inside the sleeve and the frame body increases, the bending moment at the air jet hole increases, and the high-pressure gas sprays out from the air jet hole. The position of the air jet hole 7 is set to control the jet direction. When the gas pill 5 receives the electrical signal from the trigger signal input terminal 1, a large amount of arc-extinguishing gas will be triggered.

[0061] The high-strength upper frame body 2, the lower frame body 6 and the sleeve 3 radially and axially restrict the air flow, and the incremental pressure of the gas pill 5 inside the sleeve 3 increases rapidly. Due to the high-strength wrapping, the burning rate of the gas-producing material is accelerated, the combustion integrity is improved, and the combustion is more sufficient. The radial sleeve radially restricts the air flow, the frame body axially restricts the air flow, the pressure inside the sleeve and the frame body increases, the bending moment at the air jet hole increases, and the high-pressure air flow sprays. Since the strength at the air outlet is much smaller than the strength of the sleeve 3 and the aperture of the air jet hole 7 becomes smaller, a large bending moment will be generated. When the sum of the base pressure of the gas pill 5 and the incremental pressure of the wrapping layer is greater than the critical pressure for the gas-producing material to rupture, the air flow sprays from the unwrapped air outlet, the jet direction of the air outlet is controllable, the jet air flow is concentrated and strong, and the arc extinction effect is greatly improved. By improving the sealing strength, the materials inside the gas pill 4 burn sufficiently to generate a greater critical release air pressure, generating a high-speed arc-extinguishing air flow while the 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, and its arc extinction time is much shorter than the action time of the circuit breaker. Among them, the gas production of the arc extinction unit directly affects the arc extinction effect.

[0062] Example 9:

[0063] The upper frame body 2, the lower frame body 6, the sleeve 3 and the material binding layer are made of the same type of metal material. The thicknesses of the limiting barrel 2 and the sleeve 3 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 binding layer and the radial kit or the wrapping layer. 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.

[0064] Embodiment 10:

[0065] The size of the gas ejection hole 7 is 5 - 8 mm, and the gas generated by the gas pill 5 is ejected from the gas ejection hole. The air flow is ejected from the unenclosed gas ejection hole 7. The ejection direction of the gas ejection hole 7 is controllable, the ejected air flow is concentrated and strong, and the arc extinguishing effect is greatly improved. The general original ejection holes are generally more than ten millimeters, resulting in an overly large 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 calculated length of the rod. When θ (the torque) and EI (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 gas ejection hole 7 is smaller, so it takes a longer time for the same gas 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.

[0066] The above 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 exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. 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 claims involved.

[0067] The above - mentioned 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 refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A combined gas supercharging device, characterized in that: It includes a trigger signal input terminal (1), an upper frame (2), a sleeve (3), a gas pellet base (4), a gas pellet (5), a lower frame (6), and a jet hole (7). The trigger signal input terminal (1) is arranged on the gas pellet base (4). The gas pellet base (4) is connected to the gas pellet (5). The sleeve (3) is sleeved outside the gas pellet (5). The upper frame (2) and the lower frame (6) are detachably connected. The upper frame (2) and the lower frame (6) are sleeved outside the sleeve (3) and the gas pellet base (4). The jet hole (7) is arranged on the lower frame (6). The gas pellet (5) is triggered to burn to generate gas. The sleeve (3) generates radial restraint on the gas. The upper frame (2) and the lower frame (6) are combined to generate axial restraint on the gas. The burning speed of the fuel in the gas pellet (5) is accelerated, and the gas is ejected from the jet hole (7). The upper frame (2), the lower frame (6), and the sleeve (3) are all set as rigid structures; The upper frame (2) and the lower frame (6) are detachably connected by arranging a frame connector (9). The frame connector (9) is a cylindrical threaded connector, a snap connector, a slide rail connector, a rotation misalignment connector, and a barb rotation connector; It further includes a sealing gasket (8). The sealing gasket (8) is arranged at the edge of the jet hole (7). The sealing gasket (8) is arranged between the lower frame (6) and the gas pellet (5) and is in close contact; 2. The combined gas supercharging device according to claim 1, characterized in that: The upper frame (2) and the lower frame (6) are both set as cylindrical structures. The openings of the two cylindrical structures face each other and are connected by threads or an arc slide rail. A trigger signal input hole (11) is arranged on the upper frame (2), and a waterproof ring is arranged on the trigger signal input hole (11).

3. The combined gas supercharging device according to claim 1, characterized in that: The upper frame (2) and the lower frame (6) are both set as concave frame structures. The openings of the two concave frame structures face each other and are connected by snap connection, slide rail connection, or rotation misalignment connection. A trigger signal input hole (11) is arranged on the upper frame (2), and a waterproof ring is arranged on the trigger signal input hole (11).

4. A combined gas supercharging device according to claim 1, characterized in that: The sleeve (3) is set as a cylindrical structure. A cylindrical jet opening is arranged at the bottom of the cylindrical structure. The centers of the cylindrical jet opening and the jet hole (7) are arranged on the same straight line. The sleeve (3) is composed of several detachable circular hoops (10), and the circular hoops (10) are detachably connected to each other.

5. The combined gas supercharging device according to claim 1, characterized in that: The gas pellet (5) includes a material confinement layer, gunpowder, and solid oxygen, or the gas pellet (5) includes a material confinement layer, gunpowder, and liquid oxygen. The gunpowder and solid oxygen are mixed and sealed in the material confinement layer, or the gunpowder and liquid oxygen are mixed and sealed in the material confinement layer. The rupture pressure value of the material confinement layer is less than the pressure increment value inside the frame.

6. The combined gas supercharging device according to claim 1, wherein: The trigger signal input terminal (1) is arranged in contact with the gunpowder inside the gas pellet (5) by arranging several heating resistance wires. The several heating resistance wires are connected in parallel and are connected to the trigger signal input terminal.

7. The combined gas supercharging device according to claim 1, characterized in that: The upper frame (2), the lower frame (6), the sleeve (3), and the material confinement layer are made of the same type of metal material. The thicknesses of the upper frame (2) and the sleeve (3) are proportional to the amount of gunpowder.

8. A combined gas supercharging device according to claim 1, characterized in that: The size of the air vent (7) is 5 - 8 mm, and the gas generated by the air pill (5) is ejected from the air vent.

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