A simple-to-assemble integrated gas booster device

Abstract

The present invention discloses a simple-assembly integrated gas boosting device, belonging to the field of lightning protection devices for transmission lines, which includes a trigger signal input terminal, a limiting barrel, a sleeve, a gas pill base, a gas pill 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 limiting barrel is clamped outside the sleeve and the gas pill base, and the air jet hole is arranged on the limiting barrel. The sleeve radially restricts the airflow, the limiting barrel axially restricts the airflow, the pressure inside the sleeve and the limiting barrel increases, the bending moment at the air jet hole increases, and high-pressure airflow is ejected. Both the limiting barrel and the sleeve are set as rigid structures. This device improves the safety ability of the solid-phase arc extinguishing and lightning protection device. Without the condition of strengthening the external structure, it does not damage the external structure, improves the sealing strength of the external structure for gas production to enhance the gas pressure, makes the fuel combustion of the gas-producing material more sufficient, the gas production more concentrated and the direction controllable, and further improves 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 an integrally gas pressurizing device with easy assembly. Background Art

[0002] Lightning protection for 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, 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.

[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 blow out 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 an integrally gas pressurizing device with easy assembly to solve the technical problem that the gas pressure and arc extinguishing gas time of the existing gas generating device cannot meet the requirements of special occasions and higher voltage levels.

[0006] An integrally gas pressurizing device with easy assembly includes a trigger signal input terminal, a limiting barrel, a sleeve, a gas pellet base, a gas pellet, and an air jet hole. The trigger signal input terminal is arranged on the gas pellet base, the gas pellet base is connected to the gas pellet, the sleeve is sleeved outside the gas pellet, the limiting barrel is clamped outside the sleeve and the gas pellet base, the limiting barrel is provided with an air jet hole, the gas pellet is triggered to burn, the sleeve radially restricts the gas pellet, the limiting barrel axially restricts the gas pellet, and the gas generated by the gas pellet is ejected from the air jet hole. Both the limiting barrel and the sleeve are made of hard structures.

[0007] Further, the air jet hole is arranged at the opposite end of the trigger signal input terminal, and the trigger signal input terminal is in contact with the gas pellet.

[0008] Further, the sleeve is arranged in a cylindrical structure, and the cylindrical structure is composed of a plurality of detachable circular hoops, and the circular hoops are detachably connected to each other.

[0009] Further, the above solution further includes a sealing gasket, which is disposed at the edge of the air jet hole, between the limiting frame and the air pellet, and is in close contact with them.

[0010] Further, the sleeve is arranged in a cylindrical structure, and a cylindrical air jet hole is provided at the bottom of the cylindrical structure. The center of the cylindrical air jet hole and the center of the air jet hole are arranged on the same straight line.

[0011] 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 sleeve and the limiting barrel.

[0012] Further, the trigger signal input terminal is arranged in contact with the gunpowder inside the air pellet through a plurality of heating resistance wires. The plurality of heating resistance wires are arranged in parallel and connected to the trigger signal input terminal.

[0013] Further, the bottom of the limiting barrel is arranged in an open structure, and a bottom wall is provided on the side of the bottom of the limiting barrel. After the air pellet base and the air pellet are inserted into the limiting barrel, the bottom wall is mechanically squeezed and folded inward to form an angle of 85° - 95° with the side wall of the limiting barrel. The air jet hole is provided on one side of the top of the limiting barrel.

[0014] Further, the limiting barrel is arranged in a hollow cylindrical structure, including a sleeve bottom plate, a side wall, and a top cover. The sleeve bottom plate and the top cover are respectively arranged at both ends of the side wall. The top cover or the sleeve bottom plate is movably connected or detachably connected to the side wall. A top cover air jet hole is provided on the top cover. The top cover air jet hole and the air jet hole are arranged on the same straight line. The top cover or the sleeve bottom plate is clamped to the side wall through a buckle.

[0015] Further, the limiting barrel, the sleeve, and the material confinement layer are made of the same type of metal material. The thickness of the limiting barrel and the sleeve is proportional to the amount of gunpowder. The size of the air jet hole is 5 - 8 mm. The gas generated by the air pellet is ejected from the air jet hole.

[0016] The present invention adopts the above technical solution, and 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, it will not damage the external structure.

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

[0019] (3) The high-strength wrapping of this device accelerates the burning rate of the gas-generating material, improves the combustion integrity, makes the combustion more complete. The radial sleeve radially constrains the airflow, and the limiting barrel axially constrains the airflow. The pressure inside the sleeve and the limiting barrel increases, the bending moment at the air jet holes increases, and high-pressure airflow is ejected. After the gas-generating material in the gas pill is completely burned, no detonation will occur. The sleeve surrounds the periphery of the gas pill, the limiting barrel frontally and rearward positions the base and the gas pill of the gas pill. The sleeve radially constrains the airflow, and the limiting barrel axially constrains the airflow. The incremental pressure inside the gas pill increases rapidly, the burning rate of the gas-generating 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 response time of arc extinguishing is faster, and the arc extinguishing effect is better. Description of the Drawings

[0020] Figure 1 It is a sectional view of the structure with a first empty hole provided at the bottom of the present invention.

[0021] Figure 2 It is a sectional view of the structure with another empty hole provided at the bottom of the present invention.

[0022] Figure 3 It is a sectional view of the structure with a first top cover provided at the bottom of the present invention.

[0023] Figure 4 It is a sectional view of the structure with another top cover provided at the bottom 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 that of a common gas generator.

[0026] Figure 7 It is a schematic diagram of the structure with an empty hole provided at the bottom of the limiting barrel of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure with a top cover provided at the bottom of the limiting barrel of the present invention.

[0028] Figure 9 It is a schematic diagram of the first structure of the sleeve of the present invention.

[0029] Figure 10 It is a schematic diagram of the another structure of the sleeve of the present invention.

[0030] In the figure: 1 - Trigger signal input terminal, 2 - Limit barrel, 3 - Sleeve, 4 - Air pellet base, 5 - Air pellet, 6 - Air jet hole, 7 - Bottom wall, 8 - Sealing ring gasket, 9 - Resistance wire, 10 - Circular hoop, 11 - Sleeve air jet hole, 12 - Sleeve bottom plate, 13 - Top cover, 14 - Top cover air jet hole, 15 - Snap fastener. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the present invention more clearly understood, 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.

[0032] The following explains some technical principles used in the present invention:

[0033] 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.

[0034] According to the characteristics of the bending moment, 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 jet airflow concentrated and intense, and greatly improving the arc extinguishing effect; moreover, the pressure increment can be controlled by controlling the area size of the unwrapped air outlet. The pressure inside the sleeve and the limit barrel increases, the bending moment at the air jet hole increases, and high-pressure airflow is ejected.

[0035] The relationship between the burning rate and the pressure satisfies the following formula: u n = a + bP v ; The pressure has the greatest influence on the burning rate. Within a certain range, the greater the pressure, the greater the burning rate, and a large pressure may turn into detonation. Mechanism of the transition from explosive combustion to 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.

[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] An integrally assembled and simple gas boosting device, as Figures 1 - 4 shown, includes a trigger signal input terminal 1, a limit barrel 2, a sleeve 3, a gas pill base 4, a gas pill 5, and an air jet hole 6. 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 limit barrel 2 is sleeved outside the sleeve 3 and the gas pill base 4. The limit barrel 2 is provided with an air jet hole 6. When the pressure in the sleeve 3 and the limit barrel 2 increases, the bending moment at the air jet hole increases, and high-pressure air flows are ejected. The limit barrel 2 and the sleeve 3 are both made of hard 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 arranged in a cylindrical structure or a square structure, etc. Other structures not mentioned are within the protection scope of this application. Among them, 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. One end of the limit barrel 2 fixes the gas pill base 4, and the other end supports the gas pill 5. The air jet hole 6 is arranged on the side supporting the gas pill 5. The inner side wall of the limit barrel 2 is in contact or not in contact with the gas pill base 4 and the gas pill 5. The sum of the base pressure of the gas pill 5, the incremental pressure of the limit barrel 2, and / or the incremental pressure of the sleeve 3 is greater than the critical pressure for the gas-producing material in the gas pill 5 to rupture.

[0041] The base pressure of the gas pill 5 is the reaction force of the extrusion force when the gunpowder wrapped in the gas pill 5 is extruded when the gas pill 5 does not burn. That is, when the sleeve 3 is tightly wrapped with the gas pill 5, the gas pill 5 will generate an outward tension on the sleeve 3, which is the base pressure of the gas pill 5. The incremental pressure of the sleeve 3 is the pressure added to the sleeve 3 outward, and the limit pressure that just causes the sleeve 3 to rupture is the incremental pressure of the sleeve 3. The incremental pressure of the limit barrel 2 is the outward pressure on the upper and lower parts of the limit barrel 2, and the limit pressure that just causes the limit barrel 2 to rupture is the incremental pressure of the limit barrel 2. The critical pressure for the gas pill 5 to rupture is the pressure when the internal fuel in the gas pill 5 is completely burned and the maximum pressure of the generated gas is reached. That is, the high-strength limit barrel 2 and sleeve 3 wrapping the gas pill 5 will not cause detonation, but the high-pressure gas will be ejected from the air jet hole 6 after complete combustion.

[0042] The gas pill 5 is nested inside the sleeve 3, and the sleeve 3 wraps around the side of the gas pill 5. The top end of the limiting barrel 2 is in close contact with the base 4 of the gas pill, and the bottom end is in close contact with the bottom of the gas pill 5 or 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 the gas-producing materials in the gas pill 5 are under all the pressure borne by the sleeve 3. In the vertical direction, the limiting barrel 2 limits the high-pressure gas generated in 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 end of the limiting barrel 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 limiting barrel 2 is provided with an air jet hole 6, and the gas is ejected from this uncovered air jet hole 6 and the ejection direction is controllable. By making the aperture of the provided air jet hole 6 smaller and setting the position according to needs, a situation where the direction is controllable is achieved 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.

[0043] After the gas pill 5 receives the trigger signal input by the trigger signal input terminal 1, gas is rapidly generated inside the gas pill 5. Since the strength of the sleeve 3 and the limiting barrel 2 is very good, far greater than the pressure of the gas generated by the gas pill 5, the sleeve 3 and the limiting barrel 2 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 6, so that the pressure of the ejected gas increases, and at the same time, an operation with a controllable jet direction is achieved according to the set size and position of the air jet hole 6. 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.

[0044] 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 limiting barrel 2 are provided in the device of the present application. The sleeve 3 radially restricts the air flow, and the limiting barrel 2 axially restricts the air flow. The pressure inside the sleeve 3 and the limiting barrel 2 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, and at the same time, the sum of the base pressure of the air pellet 5 and the incremental pressure of the limiting barrel 2 is greater than the critical pressure for the rupture of the air pellet 4, so that gas is generated when the air pellet 4 is ignited and the wrapping layer 2 does not deform, and the gas pressure rises rapidly. While the conventional gas generator will undergo a certain deformation and its volume increases when generating gas, resulting in the gas pressure not being 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 is faster than that of the fuel in the conventional gas generator, and thus the jetting time of the present device is faster than that of the conventional gas generator, that is, the arc extinguishing reaction time is faster.

[0045] 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 higher 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 6, while the conventional gas generator directly detonates and sprays in multiple directions, so that the time of high-pressure arc extinguishing is 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 6. Therefore, the arc extinguishing gas pressure is high and the time of spraying 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, having a stronger arc extinguishing jet pressure.

[0046] Example 2:

[0047] The bottom of the limit barrel 2 is set as an open structure. A bottom wall 7 is provided on the side of the bottom of the limit barrel 2. After the air pill base 3 and the air pill 4 are inserted into the limit barrel 2, the bottom wall 7 is mechanically squeezed and folded inward to form an angle of 85°-95° with the side wall of the limit barrel 2. The air jet hole 6 is provided on one side of the top of the limit barrel 2. The bottom wall 7 is used to fix the air pill base 3. When high-pressure gas is generated, a front-back tension will be generated and fixed by the bottom wall 7. The thickness of the bottom wall 7 is thicker than that of the other end of the cylindrical structure. Being set as a cylindrical structure has the advantages of convenient installation, simple processing, greatly saving processing costs, and improving economic benefits. Using a machine to press it inward can improve the hardness of the fixation.

[0048] Embodiment 3:

[0049] The limit barrel 2 is set as a hollow cylindrical structure inside, including a sleeve bottom plate 12, a side wall, and a top cover 13. The sleeve bottom plate 12 and the top cover 13 are respectively arranged at both ends of the side wall. The top cover 13 or the sleeve bottom plate 12 is movably connected or detachably connected to the side wall. A top cover air jet hole 14 is provided on the top cover 13. The top cover air jet hole 14 and the air jet hole are on the same straight line. The top cover 13 or the sleeve bottom plate 12 is clamped with the side wall by a buckle 5. Generally, the top cover 13 of the limit barrel 2 and the side wall are set as an integrally formed structure, and the sleeve bottom plate 12 and the side wall are set as a movably connected or detachably connected structure, so as to better reduce the air leakage during air jetting. Setting it to the situation of opening one end or both ends can well realize mechanized assembly, greatly improving the installation speed and rate, reducing production costs and processing costs, and improving economic benefits.

[0050] Embodiment 4:

[0051] The solution of the present invention further includes a sealing gasket 8. The sealing gasket 8 is arranged at the edge of the air jet hole 6. The sealing gasket 8 is arranged between the limit barrel 2 and the air pill 5 and is in close contact. In order to increase the tightness between the limit barrel 2 and the air pill 5, a sealing gasket is added at the gap of the air outlet of the limit barrel 2. The sealing gasket 8 mainly cooperates with the sleeve 3 with an open bottom. The sealing gasket 8 can limitedly control the size of the gas ejection port to be the same as that of the air jet hole 6, making the bending moment on the outer layer of the air pill 5 larger, so that the internal air pressure increases after following the increase of the bending moment, and the ejected air pressure is higher. The sealing gasket 8 is made of an elastic material.

[0052] Embodiment 5:

[0053] The sleeve 3 is set as a cylindrical structure. The bottom of the cylindrical structure is provided with a cylindrical air jet hole. The center of the cylindrical air jet hole and the center of the air jet hole 6 are on the same straight line. The bottom of the cylindrical structure is set as a barrel bottom structure, and then a cylindrical air jet hole is opened in the barrel bottom structure. The cylindrical air jet hole coincides with the air jet hole 6.

[0054] Example 6:

[0055] The gas pill 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 inside 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 limit barrel. After the gunpowder is ignited, the solid oxygen or liquid oxygen provides oxygen for combustion, and as the temperature rises, both the solid oxygen or liquid oxygen will vaporize, providing an additional gas pressure, forming a secondary pressurization effect, making the gas pressure increase faster. When the gunpowder is basically completely burned, the gas pressure generated will be greater than the critical pressure at which the material confinement layer ruptures, causing the material confinement layer at the gas ejection hole 6 to rupture, and the gas jets out from the gas ejection hole 6 to extinguish the arc.

[0056] Example 7:

[0057] The trigger signal input terminal 1 is arranged in contact with the gunpowder inside the gas pill 5 by setting a number of heating resistance wires. The number of heating resistance wires is arranged in parallel and is connected to the trigger signal input terminal. By arranging the heating resistance wires in parallel, the effect of multi-point ignition is achieved, which can shorten the reaction time, that is, shorten the reaction time for arc extinguishing, and the arc extinguishing is faster.

[0058] Example 8:

[0059] The gas ejection hole 6 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 gas ejection hole 6 and the trigger signal input terminal 1 at the opposite ends, the air pressure in the gas pill 5 structure will not instantly press on the material confinement layer of the gas ejection hole 6 until the gunpowder inside is completely burned, making the gas-producing material inside the gas pill 5 burn more completely, with a greater gas pressure, and can extinguish the arc generated by higher-voltage power transmission, making the arc extinguishing effect better.

[0060] The trigger signal input terminal 1 inputs a current signal, the resistance wire heats up, the gunpowder inside the gas pill burns to generate high-pressure gas, the limit frame 2 axially restricts 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 confinement layer at the gas ejection hole, the pressure inside the sleeve 3 and the limit barrel 2 increases, the bending moment at the gas ejection hole increases, and the high-pressure gas jets out from the gas ejection hole. The position of the gas ejection hole 6 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 limiting frame 2 and the sleeve 3 radially and axially constrain the air flow, and the incremental pressure of the air pellets 5 in the sleeve 3 rapidly increases. Since the strength at the air outlet is much smaller than that of the sleeve 3 and the aperture of the air injection hole 6 becomes smaller, a large bending moment will be generated. When the sum of the base pressure of the air pellet 5 and the incremental pressure of the wrapping layer is greater than the critical pressure for the rupture of the gas-generating material, the air flow jets from the uncovered air outlet. The jet direction of the air outlet is controllable, the jet air flow is concentrated and strong, and the arc extinguishing effect is greatly improved. By increasing the sealing strength, the materials in the air pellet 4 burn sufficiently to generate a greater critical release air pressure, generating a high-speed arc extinguishing air flow 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. Its arc extinguishing time is much shorter than the operating time of the circuit breaker. Among them, the gas generation of the arc extinguishing unit directly affects the arc extinguishing effect. 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 3 radially constrains the air flow, and the limiting barrel 2 axially constrains the air flow. The pressure in the sleeve 3 and the limiting barrel 2 increases, the bending moment at the air injection hole increases, and the high-pressure air flow jets.

[0062] Embodiment 9:

[0063] The sleeve 3 is arranged in a cylindrical structure, and the cylindrical structure is composed of a plurality of detachable circular hoops 10, and the circular hoops 10 are detachably connected to each other. The circular hoops 10 are connected by threads or buckles, so that the air pellets 5 with corresponding lengths 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 can be determined. Generally, the length of the air pellet 5 is an integer multiple of the length of the circular hoop 10.

[0064] Embodiment 10:

[0065] The limiting barrel 2, the sleeve 3 and the material confinement 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. The size of the air injection hole 6 is 5-8 mm, and the gas generated by the air pellet 5 jets out from the air injection hole. 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 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.

[0066] The air flow is ejected from the uncovered air jet hole 6. The ejection direction of the air jet hole 6 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 an overly large ejection range, a short ejection time, and a poor arc extinguishing effect. 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 (torque) and EI (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 6 is smaller, so the same gas takes a longer time to be ejected completely, which means the arc extinguishing time is longer, achieving an increase in the arc extinguishing gas pressure and an increase in the arc extinguishing time, thus achieving a better arc extinguishing effect.

[0067] 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 without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. 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 embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0068] The above are only the preferred embodiments 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. An integrally assembled and easily assembled gas boosting device, characterized in that: It includes a trigger signal input terminal (1), a limit barrel (2), a sleeve (3), a gas pellet base (4), a gas pellet (5), and an air jet hole (6). 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 limit barrel (2) is clamped outside the sleeve (3) and the gas pellet base (4). The limit barrel (2) is provided with an air jet hole (6). The gas pellet (5) is triggered to burn. The sleeve (3) radially restricts the gas pellet (5). The limit barrel (2) axially restricts the gas pellet (5). The gas generated by the gas pellet (5) is ejected from the air jet hole (6). Both the limit barrel (2) and the sleeve (3) are set as rigid structures; The bottom of the limit barrel (2) is set as an open structure. There is a bottom wall (7) on the side of the bottom of the limit barrel (2). After the gas pellet base (4) and the gas pellet (5) are inserted into the limit barrel (2), the bottom wall (7) is mechanically squeezed and folded inward to form an 85° - 95° angle with the side wall of the limit barrel (2). The air jet hole (6) is arranged on one side of the top of the limit barrel (2); The limit barrel (2) is set as a cylindrical structure with a hollow interior, including a sleeve bottom plate (12), a side wall, and a top cover (13). The sleeve bottom plate (12) and the top cover (13) are respectively arranged at both ends of the side wall. The top cover (13) or the sleeve bottom plate (12) is movably connected or detachably connected to the side wall. There is a top cover air jet hole (14) on the top cover (13). The top cover air jet hole (14) and the air jet hole are on the same straight line. The top cover (13) or the sleeve bottom plate (12) is clamped to the side wall by setting a buckle (15).

2. The one-piece gas boosting device with simple assembly according to claim 1, characterized in that: It also includes a sealing ring gasket (8). The sealing ring gasket (8) is arranged at the edge of the air jet hole (6). The sealing ring gasket (8) is arranged between the limit barrel (2) and the gas pellet (5) and is in close contact.

3. The one-piece gas boosting device with easy assembly according to claim 1, characterized in that: The sleeve (3) is set as a cylindrical barrel structure. The bottom of the cylindrical barrel structure is provided with a cylindrical barrel air jet port. The center of the cylindrical barrel air jet port and the center of the air jet hole (6) are on the same straight line.

4. An integrally assembled simple gas booster device according to claim 1, wherein: 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 sleeve and the limit barrel.

5. The one-piece gas boosting device with simple assembly according to claim 1, characterized in that: The trigger signal input terminal (1) is in contact with the gunpowder inside the gas pellet (5) by setting 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.

6. The one-piece gas boosting device with simple assembly according to claim 1, characterized in that: The air jet hole (6) is arranged at the opposite end of the trigger signal input terminal (1). The trigger signal input terminal (1) is in contact with the gas pellet (5).

7. An integrated gas boosting device with simple assembly according to claim 1, characterized in that: The sleeve (3) is set as a cylindrical structure. The cylindrical structure is composed of a plurality of detachable circular hoops (10). The circular hoops (10) are detachably connected to each other.

8. An integrated gas boosting device with simple assembly according to claim 1, characterized in that: The limiting barrel (2), 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. The size of the gas ejection holes (6) is 5-8 mm, and the gas generated by the gas pills (5) is ejected from the gas ejection holes.

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