Arc extinguishing lightning protection device

Abstract

The invention relates to the technical field of arc extinguishing and lightning protection, and provides an arc extinguishing and lightning protection device which comprises a shell, a conveying belt and an arc extinguishing piece. Wherein the shell is internally provided with an arc extinguishing cavity. In addition, a storage bin is separated in the arc extinguishing cavity, and the arc extinguishing piece is stored in the storage bin. And the conveyor belt is arranged in the arc extinguishing cavity and is communicated with the storage bin. The conveying belt can reciprocate, and a plurality of containing parts are arranged on the outer surface of the conveying belt at intervals. The arc extinguishing members can be conveyed from the storage bin to the accommodating parts on the conveyor belt. In addition, the arc extinguishing member can generate arc extinguishing dust to block the arc after being heated and broken. According to the arrangement, when lightning arc is introduced into the arc extinguishing cavity, the arc extinguishing piece arranged in the accommodating part is broken due to heating, so that arc extinguishing dust can be generated in the arc extinguishing cavity, and the lightning arc is blocked. Moreover, after one arc extinguishing action is finished, the storage bin can convey the arc extinguishing piece to the accommodating part for supplement, so that continuous, stable and effective arc extinguishing can be realized, regular maintenance and raw material replacement are not needed, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of arc extinguishing and lightning protection, and particularly to an arc extinguishing and lightning protection device. Background Art

[0002] Lightning strikes cause great damage to the power grid. They can not only lead to overvoltage, system failures, and even equipment damage, but also trigger secondary disasters such as fires and explosions, seriously endangering people's lives and property.

[0003] To reduce the impact of lightning strikes on transmission lines, lightning arresters are usually used to reasonably guide and release lightning energy, preventing major accidents from occurring after the transmission lines are struck by lightning. Traditional lightning arresters usually use gas arc extinguishing methods, but common gas arc extinguishing devices have certain limitations. For example, the number of uses is limited, and the gas-producing materials need to be replaced in a timely manner, resulting in an increase in the maintenance cost and workload of the lightning arrester. Summary of the Invention

[0004] This application provides an arc extinguishing and lightning protection device to solve the problems in the prior art that the gas arc extinguishing device has a limited number of uses and the raw materials need to be frequently replaced.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] An arc extinguishing and lightning protection device provided by this application includes: a housing with an arc extinguishing chamber inside, and a storage bin is partitioned in the arc extinguishing chamber; a conveyor belt is arranged in the arc extinguishing chamber and communicates with the storage bin, the conveyor belt can move reciprocally, and a plurality of accommodating parts are arranged at intervals on the outer surface of the conveyor belt; an arc extinguishing member is stored in the storage chamber, and the arc extinguishing member is transported to the accommodating part through the storage bin, and the arc extinguishing member can generate arc extinguishing dust after being heated and broken to block the arc.

[0007] As an optional implementation manner, an arc ignition plate is arranged inside the housing, and the arc ignition plate and the housing jointly enclose the arc extinguishing chamber; wherein, the conveyor belt and the arc ignition plate enclose an arc extinguishing channel, and the conveyor belt transports the arc extinguishing member towards the arc extinguishing channel.

[0008] As an optional implementation manner, when the arc extinguishing member is located in the arc extinguishing channel, the arc extinguishing member contacts the arc ignition plate.

[0009] As an optional implementation manner, the storage bin is located at the top of the conveyor belt, a falling port is arranged at the bottom of the storage bin, and the arc extinguishing member is transported from the falling port to the accommodating part; and, the side of the conveyor belt facing the arc ignition plate travels from top to bottom.

[0010] As an optional implementation manner, a blocking part is arranged in the arc extinguishing chamber, and the blocking part is used to abut against the arc extinguishing member in the accommodating part to block the advancement of the conveyor belt.

[0011] As an optional implementation manner, the blocking part is close to the bottom of the arc extinguishing chamber.

[0012] As an alternative embodiment, the arc extinguishing member includes: a glass column having a column core and a sandwich layer, the column core being filled with an expansion liquid, and the sandwich layer being filled with an insulating powder; and a metal film wrapped around both axial ends of the glass column.

[0013] As an alternative embodiment, it further includes: a driving wheel connected to the conveyor belt; and a driving member for driving the driving wheel to rotate.

[0014] As an alternative embodiment, the driving member includes: a spring; and a shaft core connected to the spring and rotatable under the drive of the spring.

[0015] As an alternative embodiment, the housing is provided with an exhaust hole that communicates with the arc extinguishing chamber.

[0016] The arc extinguishing and lightning protection device provided by the present application includes a housing, a conveyor belt, and an arc extinguishing member. Among them, an arc extinguishing chamber is provided inside the housing, and a storage bin is separated inside the arc extinguishing chamber, and the arc extinguishing member is stored in the storage bin. The conveyor belt is arranged inside the arc extinguishing chamber and is connected to the storage bin. The conveyor belt can reciprocate, and a plurality of accommodating portions are arranged at intervals on the outer surface of the conveyor belt. The arc extinguishing member can be conveyed from the storage bin to each accommodating portion on the conveyor belt. Moreover, after the arc extinguishing member is heated and broken, arc extinguishing dust can be generated to block the electric arc.

[0017] With such a setting, when a lightning arc is introduced into the arc extinguishing chamber, the arc extinguishing member arranged in the accommodating portion is heated and broken, so that arc extinguishing dust can be generated in the arc extinguishing chamber to block the lightning arc. Moreover, after one arc extinguishing operation is completed, the storage bin can convey the arc extinguishing member to the accommodating portion for replenishment, so that continuous and stable effective arc extinguishing can be achieved without regular maintenance and replacement of raw materials, reducing the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of an arc extinguishing and lightning protection device provided by an embodiment of the present application;

[0020] Figure 2 It is a schematic structural diagram of another arc extinguishing and lightning protection device provided by an embodiment of the present application;

[0021] Figure 3 It is a schematic structural diagram of the arc extinguishing member provided by an embodiment of the present application;

[0022] Figure 4 This is a connection diagram of the conveyor belt provided by the embodiment of the present application.

[0023] Explanation of the reference numerals:

[0024] 100 - housing; 110 - arc extinguishing chamber; 111 - storage bin; 1111 - falling opening; 112 - arc extinguishing channel; 113 - blocking part; 114 - exhaust hole; 115 - arc - initiating end; 116 - grounding end; 117 - arc - initiating plate; 1171 - first connection section; 1172 - intermediate connection section; 1173 - second connection section; 118 - insulating ring;

[0025] 200 - conveyor belt; 210 - accommodating part;

[0026] 300 - arc extinguishing part; 310 - glass column; 320 - metal film; 330 - interlayer; 340 - column core;

[0027] 400 - driving wheel; 410 - gear guard plate;

[0028] 500 - driving part. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0030] Lightning strikes may cause great harm to the power grid system. In the lightest case, it may cause line tripping, damage to transmission lines, breakdown of insulators, transformer failures, and damage to distribution systems and equipment. In severe cases, it may even trigger secondary disasters such as fires and explosions, seriously damaging people's lives and property safety.

[0031] According to statistics, lightning strikes are one of the main reasons for accidents in transmission lines. The number of tripping accidents caused by lightning strikes in transmission lines accounts for more than 50% of the total tripping accidents. Moreover, the strong current and high temperature generated by lightning may also cause the transmission line to be burned out or seriously broken - stranded. Not only that, the electromagnetic pulse of lightning will also interfere with and damage the distribution system, control equipment, communication equipment, etc. in the power grid, making the equipment unable to work properly, resulting in problems such as data loss and system paralysis.

[0032] In order to mitigate the impact of lightning strikes on transmission lines, in the prior art, lightning arresters are usually used to reasonably guide and release lightning energy, thereby effectively preventing major accidents from occurring after the transmission lines are struck by lightning. When the transmission line is struck by lightning or suffers from induced lightning, the lightning arrester can direct the lightning current to itself and introduce the powerful current into the ground. However, a powerful electric arc will randomly occur after the lightning strike, and this electric arc will seriously affect the service life of the power system devices and even threaten the safe operation of the power system.

[0033] Currently, most lightning arresters adopt the gas arc extinguishing method. Gas arc extinguishing means using solid gas-producing materials to decompose under the action of the high temperature of the electric arc to generate a large amount of gas to achieve arc extinguishing.

[0034] When the lightning arrester operates, the high temperature generated by the electric arc causes the gas-producing materials inside the lightning arrester to decompose rapidly, generating a large amount of gas. These gases form a high pressure in the arc extinguishing chamber, producing a strong arc blowing effect. On the one hand, the blowing of the high-pressure gas can quickly carry away the heat in the electric arc, causing the temperature of the electric arc to drop sharply, reducing the energy of the electric arc, and suppressing the combustion of the electric arc. On the other hand, the blowing of the gas can also quickly stretch and thin the electric arc, increasing the length and resistance of the electric arc, prompting the electric arc to extinguish when the current passes through zero, and at the same time preventing the re-ignition of the electric arc.

[0035] However, the gas arc extinguishing method still has certain limitations. Since each arc extinguishing consumes the gas-producing materials inside the lightning arrester, after multiple arc extinguishing operations, the gas-producing materials inside the lightning arrester gradually decrease, and the arc extinguishing ability significantly decreases. As a result, the number of times the gas arc extinguishing type lightning arrester can be used is limited, and maintenance personnel need to regularly inspect it and replace the gas-producing materials in a timely manner to prevent the lightning arrester from failing. This undoubtedly brings higher maintenance costs and more maintenance workload.

[0036] To overcome the defects in the prior art, the present application provides an arc extinguishing and lightning protection device, including a housing, a conveyor belt, and an arc extinguishing member. Among them, an arc extinguishing chamber is provided inside the housing. And, a storage bin is separated in the arc extinguishing chamber. The storage bin stores the arc extinguishing members. The conveyor belt is arranged in the arc extinguishing chamber, and the conveyor belt can be connected to the storage bin. The conveyor belt can reciprocate, and a plurality of accommodating parts are arranged at intervals on the outer surface of the conveyor belt. The arc extinguishing members can be conveyed from the storage bin to each accommodating part on the conveyor belt. And, after the arc extinguishing members are heated and broken, arc extinguishing dust can be generated to block the electric arc.

[0037] With such a setting, when a lightning arc is introduced into the arc extinguishing chamber, the arc extinguishing members arranged in the accommodating parts are heated and broken, so that arc extinguishing dust can be generated in the arc extinguishing chamber to block the lightning arc. Also, because the conveyor belt reciprocates, and a storage bin for storing the arc extinguishing members is separated in the arc extinguishing chamber, after one arc extinguishing operation ends, the storage bin can convey new arc extinguishing members to the accommodating parts for replenishment. Thus, continuous and stable effective arc extinguishing can be achieved, and there is no need for regular inspection and replacement of raw materials, reducing the operation and maintenance costs.

[0038] The content of the present application will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the content of the present application more clearly and in detail.

[0039] Figure 1 It is a schematic structural diagram of an arc extinguishing and lightning protection device provided by an embodiment of the present application. Figure 2 It is a schematic structural diagram of another arc extinguishing and lightning protection device provided by an embodiment of the present application. Refer to Figure 1 and Figure 2 As shown, an embodiment of the present application provides an arc extinguishing and lightning protection device, including a housing 100, a conveyor belt 200, and an arc extinguishing member 300.

[0040] Among them, an arc extinguishing chamber 110 is provided in the housing 100, and the arc extinguishing chamber 110 can allow a lightning arc to pass through. And, the arc extinguishing chamber 110 is partitioned into a storage bin 111, and a plurality of arc extinguishing members 300 can be stored in the storage bin 111. The arc extinguishing member 300 can be used to block the arc. The conveyor belt 200 is arranged in the arc extinguishing chamber 110, and the conveyor belt 200 is communicated with the storage bin 111.

[0041] The conveyor belt 200 can perform reciprocating motion. A plurality of accommodating portions 210 are arranged at intervals on the outer surface of the conveyor belt 200, and the accommodating portions 210 can be used to place the arc extinguishing members 300. When the conveyor belt 200 reciprocates, the arc extinguishing members 300 can be transported from the storage bin 111 into the accommodating portions 210 on the conveyor belt 200.

[0042] When a lightning arc enters the arc extinguishing chamber 110, the arc extinguishing member 300 placed in the accommodating portion 210 is heated and cracked, and arc extinguishing dust can be generated to block the arc in the arc extinguishing chamber 110, realizing effective arc extinguishing once. At the same time, since the conveyor belt 200 can perform reciprocating motion, the storage bin 111 communicated with the conveyor belt 200 can replenish the arc extinguishing members 300 to the vacant accommodating portions 210 on the conveyor belt 200, so as to realize the automatic supply of the arc extinguishing members 300, and thus can continuously and stably extinguish the arc without manual regular maintenance and replacement of raw materials.

[0043] It can be understood that the conveyor belt 200 can be a chain plate conveyor belt or a belt conveyor belt. As long as it can realize reciprocating motion and can be provided with accommodating portions 210 for accommodating the arc extinguishing members 300, no specific limitation is made here.

[0044] When the conveyor belt 200 is a chain plate conveyor belt, the accommodating portion 210 can be a groove opened on the chain plate or formed by the gap between adjacent sub-chain plates. When the conveyor belt 200 is a belt conveyor belt, the accommodating portion 210 can be a groove opened on the conveyor belt.

[0045] Since the conveyor belt 200 is disposed within the arc extinguishing chamber 110, to prevent the lightning arc from affecting the operation of the conveyor belt 200 after entering the chamber, the conveyor belt 200 may have insulating properties. For example, the conveyor belt 200 may be an insulating chain plate conveyor belt or an insulating belt conveyor belt, such as a ceramic fiber conveyor belt, a silicon carbide conveyor belt, and a Teflon conveyor belt, etc. As long as it has insulating properties and is suitable for high-temperature environments, no specific limitations are made thereto herein.

[0046] As an implementation manner, a plurality of accommodating portions 210 may be evenly distributed on the outer surface of the conveyor belt 200, so that a plurality of arc extinguishing members 300 may be installed thereon. In this way, it is beneficial to the processing and design of the conveyor belt 200, and the distribution of the arc extinguishing members 300 on the conveyor belt 200 can be made more reasonable.

[0047] Figure 3 The structural schematic diagram of the arc extinguishing member provided by the embodiment of the present application is shown. Referring to Figure 3 As shown, the arc extinguishing member 300 may include a glass column 310 and a metal film 320. Among them, the metal film 320 is wrapped around the axial ends of the glass column 310. When an arc burns within the arc extinguishing chamber 110, part of the arc branches conduct electricity and generate heat on the metal films 320 at both ends of the glass column 310, and the heat can be transferred to the inside of the glass column 310.

[0048] The glass column 310 is provided with a column core 340 and a sandwich layer 330. The column core 340 is filled with an expansion liquid, and the sandwich layer 330 is filled with insulating powder. The high temperature transferred by the metal film 320 can cause the expansion liquid in the column core 340 to be vaporized (or gasified) by heat and expand rapidly, thereby causing the column core 340 and the glass column 310 to break. When the glass column 310 breaks, since the expansion liquid is vaporized (or gasified) by heat, it can drive the insulating powder to flow within the arc extinguishing chamber 110 to form arc extinguishing dust to block the arc, so that the arc loses the stability of the arc channel conduction, achieving the arc extinguishing effect.

[0049] It can be understood that the insulating powder may be quartz powder, electrical grade silicon micro powder, mica ceramic powder, refractory clay powder, asbestos cement powder, etc., as long as it has insulating properties, and no specific limitations are made to its specific components herein.

[0050] In some embodiments, the expansion liquid may be insulating oil. The insulating oil can be decomposed and gasified under the action of high temperature to generate a large amount of gases such as hydrogen. These gases can also cool and stretch the arc, reducing the arc temperature and electric field strength, so that they can act together with the insulating powder to extinguish the arc within the arc extinguishing chamber 110. Of course, the expansion liquid may also be other gas-generating materials, and no specific limitations are made to its types herein.

[0051] In other embodiments, the expansion fluid may also be water, which will be rapidly vaporized by the high temperature transmitted by the arc combustion to form a large amount of water vapor. The water vapor can displace the air around the arc, reduce the oxygen content, and inhibit the burning and maintenance of the arc. At the same time, the water vapor can also take away the heat of the arc during the diffusion process, playing a role in cooling and extinguishing the arc. Furthermore, the water vapor can also work together with the insulating powder to extinguish the arc in the arc extinguishing channel 112.

[0052] The following description will be made by taking the conveyor belt 200 as an insulating conveyor belt as an example.

[0053] Continue to refer to Figure 1 and Figure 2 As shown, the upper end of the housing 100 may be provided with an arc striking end 115 for introducing the arc into the arc extinguishing chamber 110. The lower end of the housing 100 may be provided with a grounding end 116 so that the lightning current can be safely introduced into the ground. An arc striking channel may be formed between the arc striking end 115 and the grounding end 116.

[0054] An arc-starting plate 117 may be provided in the housing 100. The arc-starting plate 117 and the housing 100 may enclose an arc-extinguishing chamber 110. The conveyor belt 200 and the arc-starting plate 117 may enclose an arc-extinguishing channel 112, so that the arc propagation path in the housing 100 may be guided and controlled in the arc-extinguishing channel 112. In addition, the conveyor belt 200 may transport the arc-extinguishing member 300 toward the arc-extinguishing channel 112. Specifically, since the conveyor belt 200 has an insulating property, the arc-extinguishing channel 112 is enclosed by the outer surface of the conveyor belt 200 on the side close to the arc-starting plate 117 and the arc-starting plate 117.

[0055] In some embodiments, the section of the conveyor belt 200 used to enclose the arc extinguishing channel 112 has at least two accommodating parts. Because the accommodating parts 210 on the conveyor belt 200 are replenished with empty accommodating parts 210 before traveling to the arc extinguishing channel 112, at least two arc extinguishing members 300 can be provided on the arc extinguishing channel 112. In this way, when the electric arc enters the arc extinguishing channel 112, multiple arc extinguishing members 300 may be broken in the arc extinguishing channel 112 to enhance the arc extinguishing effect in the arc extinguishing channel 112.

[0056] When one arc extinguishing action consumes one or more arc extinguishing members 300 in the arc extinguishing channel 112, one or more accommodating portions 210 can be vacated on the conveyor belt 200. When these accommodating portions 210 travel to the storage bin 111 with the conveyor belt 200, the storage bin 111 can replenish arc extinguishing members 300 to these accommodating portions 210. In this way, new arc extinguishing members 300 can be added to the arc extinguishing channel 112 through the reciprocating motion of the conveyor belt 200, so that continuous and multiple effective arc extinguishing can be achieved.

[0057] It can be understood that the setting of the arc striking plate 117 can be adjusted according to the specific positions of the arc striking end 115 and the grounding end 116 on the arc extinguishing and lightning protection device, and it is not limited herein.

[0058] Exemplarily, when the arc extinguishing member 300 is located in the arc extinguishing channel 112, the arc extinguishing member 300 can be in contact with the arc striking plate 117. With such a setting, on the one hand, when the conveyor belt 200 reciprocates, since it is necessary to ensure the conveyance of the arc extinguishing member 300 in the storage bin 111 towards the accommodating portion 210 on the conveyor belt 200, the opening size of the accommodating portion 210 is usually slightly larger than the outer diameter of the arc extinguishing member 300. During the movement of the arc extinguishing member 300 along with the conveyor belt 200, the arc striking plate 117 can limit the movement range of the arc extinguishing member 300, thereby avoiding the arc extinguishing member 300 from falling out of the accommodating portion 210 due to shaking in the accommodating portion 210 or being affected by gravity, resulting in damage to the arc extinguishing member 300 and causing waste of the arc extinguishing member 300.

[0059] On the other hand, it can form multiple point gaps in the arc extinguishing channel 112. When the electric arc enters the arc extinguishing channel 112 and burns between the arc striking end 115 and the grounding end 116, the electric arc can connect the metal films 320 at both ends of the arc extinguishing members 300 in the arc extinguishing channel 112, heating and vaporizing (or vaporizing) the expansion liquid in the arc extinguishing member 300. Thus, the arc extinguishing member 300 can be broken, and after the expansion liquid is vaporized (or vaporized), it can drive the insulating powder in the sandwich layer 330 to flow and fill the arc extinguishing channel 112, achieving the arc extinguishing effect.

[0060] In some other embodiments, when the conveyor belt 200 reciprocates, in order to prevent the arc extinguishing member 300 from falling due to the influence of gravity or shaking, the arc extinguishing member 300 can also be adsorbed in the accommodating portion 210, thereby restricting the movement of the arc extinguishing member 300. In addition, a blocking member or a supporting device can also be provided in the direction where the arc extinguishing member 300 may fall to prevent it from falling, and no specific limitation is made herein.

[0061] It can be understood that the arc extinguishing member 300 can be in contact with the arc striking plate 117, which means that the arc striking plate 117 and the arc extinguishing member 300 are in point contact. And the arc striking plate 117 is arranged in the tangential direction of the arc extinguishing member 300, and there will be no interference between the two, nor will it hinder the forward and reciprocating movement of the conveyor belt 200.

[0062] In some embodiments, the arc striking plate 117 can be connected to at least one of the arc striking end 115 or the grounding end 116. Thereby, it can ensure that the electric arc propagates along a preset path in the housing 100.

[0063] Such as Figure 1 and Figure 2As shown, the arc-starting plate 117 may include a first connecting section 1171, an intermediate connecting section 1172, and a second connecting section 1173 connected in sequence. Figure 1 Taking the paper direction in as an example, the first connecting section 1171 can be connected to the arc-striking end 115 and is arranged horizontally.

[0064] The middle connecting section 1172 is vertically connected to the first connecting section 1171 and extends toward the bottom of the housing 100 , and the horizontal distance from the middle connecting section 1172 to the outer surface of the conveyor belt 200 where the receiving portion 210 is not provided is equal. In addition, the arc extinguishing member 300 located in the arc extinguishing channel 112 contacts the middle connecting section 1172 .

[0065] The second connecting section 1173 is connected to the bottom end of the middle connecting section 1172 and extends toward a side away from the conveyor belt 200 to effectively avoid the grounding terminal 116 disposed at the bottom of the housing 100 to avoid interference.

[0066] In other embodiments, the arc-starting plate 117 may also be arranged close to the arc-starting end 115 and the grounding end 116. Moreover, the arc-starting plate 117 is not connected to the arc-starting end 115 and the grounding end 116. That is, the arc-starting end 115 and the grounding end 116 are both arranged on the same side of the arc-starting plate 117, and the arc-starting plate 117 may be arranged close to the arc-starting end 115 and the grounding end 116, so that the arc-starting plate 117 is very close to the arc-starting channel formed between the arc-starting end 115 and the grounding end 116. Thus, when the electric arc is introduced into the arc-extinguishing chamber 110, the electric arc can be guided into the arc-extinguishing channel 112 surrounded by the conveyor belt 200 and the arc-starting plate 117 by the arrangement of the above arc-starting plate 117 without affecting other chambers.

[0067] By properly setting the arc-starting plate 117 , the arc can be isolated in the arc-extinguishing channel 112 , and will not spread disorderly inside the housing 100 , thereby enhancing the safety and stability of the arc-extinguishing lightning protection device.

[0068] As an embodiment, the storage bin 111 may be located at the top of the conveyor belt 200, and a drop opening 1111 is provided at the bottom of the storage bin 111. Furthermore, the conveyor belt 200 may move from top to bottom on the side facing the arc-starting plate 117. In this way, the arc-extinguishing member 300 stored in the storage bin 111 may pass through the drop opening 1111 of the storage bin 111 by its own gravity and be transported to the vacant accommodation portion 210 on the conveyor belt 200. Furthermore, driven by the conveyor belt 200, the arc-extinguishing member 300 may move from top to bottom in the arc-extinguishing channel 112, thereby realizing the automatic supply of the arc-extinguishing member 300 in the arc-extinguishing lightning protection device.

[0069] It can be understood that the storage bin 111 can be enclosed by a plurality of insulating plates provided in the arc extinguishing chamber. The storage bin 111 can also be enclosed by a plurality of insulating plates in the arc extinguishing chamber and the inner wall of the housing 100. No limitation is made here.

[0070] In some embodiments, referring to Figure 1 as shown, the falling port 1111 can be directly provided on the insulating plate of the storage bin 111. The falling port 1111 can allow a single arc extinguishing element 300 to pass through, so that the arc extinguishing element 300 can be transported into the accommodating portion 210. In other embodiments, referring to Figure 2 as shown, the falling port 1111 can also be a gap formed between the insulating plate of the storage bin 111 and the inner wall of the housing 100, so that the arc extinguishing elements 300 fall in sequence and are transported onto the accommodating portion 210. It can be understood that reasonable design can be carried out according to the relative positions among the conveyor belt 200, the storage bin 111, and the housing 100 to ensure that the arc extinguishing element 300 can be transported into the accommodating portion 210 on the conveyor belt 200.

[0071] To reduce the possible rigid damage generated when the arc extinguishing element 300 falls, a buffer portion can be provided on the bottom surface of the accommodating portion 210 or the side wall of the glass column 310 of the arc extinguishing element 300. The deformation of the buffer portion can increase the contact area, absorb and dissipate energy, so that the impact force generated by the fall is evenly dispersed. Thus, stress concentration can be reduced, and the risk of fragmentation that may occur when the arc extinguishing element 300 makes rigid contact with the accommodating portion 210 can be reduced.

[0072] Moreover, an insulating partition can be provided between the storage bin 111 and the arc ignition end 115 to prevent the arc from flowing disorderly in the arc extinguishing chamber 110, so that the normal operation of the arc extinguishing and lightning protection device can be ensured.

[0073] As an implementation manner, the arc extinguishing chamber 110 can also be provided with a blocking portion 113. The blocking portion 113 can be used to abut against the arc extinguishing element 300 in the accommodating portion 210, so as to block the advancement of the conveyor belt 200. When no lightning arc is introduced into the arc extinguishing chamber 110, the advancement of the conveyor belt 200 can be blocked by the blocking portion 113, so that the conveyor belt 200 remains relatively stationary with respect to the housing 100. At this time, at least one accommodating portion is provided in the section of the conveyor belt 200 that forms the arc extinguishing channel 112, and an arc extinguishing element 300 is installed in each accommodating portion 210, waiting to perform the arc extinguishing action.

[0074] When a lightning arc is introduced into the arc extinguishing chamber 110, the metal films 320 at both ends of the arc extinguishing member 300 in the arc extinguishing channel 112 are mutually induced, causing the glass column 310 to break. The insulating powder and gas (or water vapor) can flow in the arc extinguishing channel 112 to achieve effective arc extinguishing. At the same time, since the arc extinguishing member 300 in contact with the blocking portion 113 is broken, the conveyor belt 200 can continue to move reciprocally, and the arc extinguishing member 300 loaded in the accommodating portion 210 is conveyed into the arc extinguishing channel 112 through the storage bin 111 until the next arc extinguishing member 300 abuts against the blocking portion 113, at which time the conveyor belt 200 stops moving and returns to the state waiting for arc extinguishing.

[0075] With such a setting, when there is no lightning strike or induced lightning, the conveyor belt 200 stops moving by the blocking of the blocking portion 113 against the arc extinguishing member 300. When there is an arc in the arc extinguishing channel 112, the contact between the blocking portion 113 and the arc extinguishing member 300 is released, and the conveyor belt 200 continues to move. In this way, the conveyor belt 200 can move intermittently, thereby reducing the working duration of the conveyor belt 200, avoiding waste of resources, prolonging the service life of the conveyor belt 200, and enhancing the stability of the arc extinguishing and lightning protection device.

[0076] It should be noted that when the arc extinguishing member 300 is adsorbed in the accommodating portion 210, the blocking portion 113 can be set at any position as long as it can achieve the contact with the arc extinguishing member 300. No specific limitation is made on its position here.

[0077] Exemplarily, the blocking portion 113 can be arranged near the bottom of the arc extinguishing chamber 110. In this way, the blocking portion 113 does not hinder the formation of the arc in the arc extinguishing channel 112, and when the arc extinguishing member 300 arranged in the accommodating cavity moves to the bottom of the housing 100, it can be blocked by the blocking portion 113 to prevent it from falling due to gravity. At the same time, when there are multiple accommodating portions arranged in the section of the conveyor belt 200 that encloses the arc extinguishing channel 112, arranging the blocking portion 113 near the bottom of the arc extinguishing chamber 110 can also make the arc extinguishing channel 112 contain multiple arc extinguishing members 300, thereby further ensuring effective arc extinguishing in the arc extinguishing channel 112.

[0078] As an implementation manner, as shown in Figure 1 The blocking portion 113 can be arranged on the middle connection section 1172 of the arc ignition plate 117. Specifically, the blocking portion 113 can be a protrusion arranged on the side of the middle connection section 1172 close to the bottom end of the housing 100. The upper surface of the protrusion can be in contact with the outer wall of the arc extinguishing member 300 to block the movement of the conveyor belt 200.

[0079] It can be understood that at this time, one side of the middle connecting section 1172 close to the first connecting section 1171 can be in contact with the arc extinguishing member 300 without affecting the advancement of the conveyor belt 200. And the protrusion provided on one side of the middle connecting section 1172 close to the second connecting section 1173 abuts against the arc extinguishing member 300 to block the movement of the conveyor belt 200.

[0080] As another implementation manner, refer to Figure 2 As shown, the blocking portion 113 can also be connected to the top end of the grounding end 116, and the other end of the blocking portion 113 extends towards the conveyor belt 200. Wherein, one end of the blocking portion 113 close to the conveyor belt 200 abuts against the outer wall of the arc extinguishing member 300.

[0081] Figure 4 It is a connection relationship diagram of the conveyor belt provided by the embodiment of the present application. Refer to Figure 4 As shown, the arc extinguishing and lightning protection device further includes a driving wheel 400 and a driving member 500. Among them. The driving wheel 400 is connected to the conveyor belt 200, and the driving member 500 can drive the driving wheel 400 to rotate. In this way, the driving wheel 400 can move under the drive of the driving member 500. The conveyor belt 200 can achieve the reciprocating movement of the conveyor belt 200 under the transmission of the driving wheel 400.

[0082] Specifically, when the conveyor belt 200 is a chain plate conveyor belt 200, the driving wheel 400 can be a sprocket. At this time, the conveyor belt 200 includes chain plates and chains, and the chain plates are fixedly connected to the chains. The driving member 500 can transmit power to the sprocket, and the sprocket can drive the chain to move continuously through the meshing connection with the chain, so as to drive the chain plates to reciprocate. Further, a gear guard plate 410 can be provided on the end face of the sprocket to protect the sprocket and extend its working life.

[0083] When the conveyor belt 200 is a belt conveyor belt 200, the driving member 500 can transmit power to the pulley, and the pulley can drive the conveyor belt 200 through the static friction force between the pulley and the conveyor belt 200 and drive the conveyor belt 200 to reciprocate.

[0084] It should be noted that the driving member 500 can be a motor or a spring, as long as it can drive the driving wheel 400. No specific limitation is made on its type here.

[0085] As an implementation manner, the driving member 500 may include a spring and a shaft core. Among them, the shaft core is connected to the spring and can rotate under the drive of the spring. The spring can be sleeved on the shaft core and stored in the spring chamber. Specifically, the spring can be a clockwork spring. In the initial state, the clockwork spring in the spring chamber is in a fully tightened state. Each time the arc extinguishing action is executed, the arc extinguishing member 300 breaks, the spring contracts inward by one section, thereby driving the shaft core to rotate. And, the other end of the shaft core is connected to the transmission wheel 400, thereby driving the transmission wheel 400 to rotate.

[0086] Continue to refer to Figure 1 As shown, the housing 100 may be provided with an exhaust hole 114, and the exhaust hole 114 may communicate with the arc extinguishing chamber 110. Since the gas in the arc extinguishing chamber 110 will be ionized and expand violently when the lightning arc burns, generating a high-temperature environment, with such a setting, the high-temperature gas in the arc extinguishing chamber 110 can be discharged to the outside through the exhaust hole 114. Thus, the stability of the air pressure inside the housing 100 of the arc extinguishing and lightning protection device is ensured. Specifically, the exhaust holes 114 may be symmetrically arranged on the side wall of the housing 100 and communicate the arc extinguishing chamber 110 with the outside.

[0087] In some embodiments, the arc extinguishing and lightning protection device further includes an insulating ring 118. The insulating ring 118 is made of a material with good insulation performance, and the insulating ring 118 surrounds the outer periphery of the housing 100, is umbrella-shaped, and a plurality of them are arranged side by side along the height direction of the housing 100.

[0088] With such a setting, the leakage path length of the current on the surface of the arc extinguishing and lightning protection device from the high-voltage end to the grounding end 116 can be increased, effectively preventing the occurrence of surface discharge, reducing the risk of flashover caused by excessive surface leakage current, and ensuring that the arrester can maintain good insulation performance under normal and abnormal conditions. At the same time, the electrical insulation strength can also be improved, forming an effective insulation barrier between the arc extinguishing and lightning protection device body and the surrounding environment, preventing the current from leaking to the surrounding air or other objects. In addition, it can also effectively block rainwater.

[0089] The working principle of an arc extinguishing and lightning protection device provided by this application is as follows:

[0090] The arc extinguishing member 300 is stored in the storage bin 111 and can be conveyed to the accommodating part 210 on the conveyor belt 200. The arc extinguishing members 300 can be arranged in sequence in the arc extinguishing channel 112. The arc extinguishing member 300 at the bottom abuts against the blocking part 113, thereby forming the arc extinguishing waiting state of the device.

[0091] In the initial state, the spring is in a tightly stretched state. The arc ignition end 115 at the top of the housing 100 introduces an electric arc into the arc extinguishing and lightning protection device. The metal films 320 at both ends of the arc extinguishing member 300 form an induction with each other and form an arc extinguishing channel 112 with the bottom grounding end 116. The heat released by the combustion of the electric arc in the arc extinguishing channel 112 causes the expansion liquid in the column core 340 of the arc extinguishing member 300 to expand. After the glass column 310 breaks, the internal insulating powder is driven by the expanded liquid after gasification (vaporization) to cover the arc extinguishing channel 112, so that arc extinguishing dust can be generated to block the air channel and form temporary insulation.

[0092] At the same time, the high-temperature and high-pressure gas generated inside the housing 100 during the combustion of the electric arc can be discharged through the exhaust port reserved on the housing 100, so that the air channel can be restored. Moreover, the breakage of the arc extinguishing member 300 causes the spring to drive the rotation of the conveyor belt 200, and then drives the arc extinguishing member 300 into place and locks it. The arc extinguishing member 300 in the storage bin 111 can automatically fall into the accommodating portion 210 on the conveyor belt 200, so as to realize the replenishment of the arc extinguishing member 300 in the arc extinguishing channel 112, and repeat the above steps to form a state of waiting for arc extinguishing again.

[0093] It should be noted that phrases such as "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining specific features, structures or characteristics with an embodiment, it is within the knowledge scope of those skilled in the art to implement such features, structures or characteristics in combination with other embodiments, whether explicitly or implicitly described.

[0094] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part according to the context, the term "one or more" used in the text can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, at least in part according to the context, terms such as "a" or "the" can also be understood as conveying a singular usage or conveying a plural usage.

[0095] It should be easily understood that the terms "on...", "above...", and "over..." in this application should be interpreted in the broadest way, so that "on..." not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above..." or "over..." not only includes the meaning of "above or over something", but also can include the meaning of "above or over something" without intermediate features or layers therebetween (that is, directly on something).

[0096] In addition, for ease of description, the text may use spatial relative terms, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to other elements or features as shown in the figure. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90° or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly as well.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An arc extinguishing lightning protection device, characterized in that: include: A housing, wherein the housing has an arc extinguishing chamber, and the arc extinguishing chamber is separated into a storage bin; A conveyor belt, which is arranged in the arc extinguishing chamber and communicated with the storage bin, the conveyor belt can reciprocate, and a plurality of accommodating portions are arranged at intervals on the outer surface of the conveyor belt; An arc extinguishing member is stored in the storage cavity and transported to the accommodating portion through the storage bin. The arc extinguishing member generates arc extinguishing dust to block the electric arc after being ruptured by heat.

2. The arc extinguishing lightning protection device according to claim 1, characterized in that: An arc-starting plate is arranged in the shell, and the arc-starting plate and the shell together form the arc-extinguishing chamber; The conveyor belt and the arc-striking plate form an arc-extinguishing channel, and the conveyor belt transports the arc-extinguishing member toward the arc-extinguishing channel.

3. The arc extinguishing lightning protection device according to claim 2, characterized in that: When the arc extinguishing member is located in the arc extinguishing channel, the arc extinguishing member contacts the arc striking plate.

4. The arc extinguishing lightning protection device according to claim 2, characterized in that: The storage bin is located on the top of the conveyor belt, and a drop opening is provided at the bottom of the storage bin, and the arc extinguishing member is transported from the drop opening to the accommodating portion; Furthermore, the conveyor belt moves from top to bottom toward one side of the arc-starting plate.

5. The arc extinguishing lightning protection device according to any one of claims 1 to 4, characterized in that: The arc extinguishing chamber is provided with a blocking portion, and the blocking portion is used to abut against the arc extinguishing member in the accommodating portion to block the conveyor belt from moving forward.

6. The arc extinguishing lightning protection device according to claim 5, characterized in that: The blocking portion is close to the bottom of the arc extinguishing chamber.

7. The arc extinguishing lightning protection device according to any one of claims 1 to 4, characterized in that: The arc extinguishing member comprises: A glass column, wherein the glass column comprises a column core and an interlayer, wherein the column core is filled with an expansion liquid, and the interlayer is filled with an insulating powder; A metal film is wrapped around two axial ends of the glass column.

8. The arc extinguishing lightning protection device according to any one of claims 1 to 4, characterized in that: Also includes: A transmission wheel connected to the conveyor belt; A driving member drives the transmission wheel to rotate.

9. The arc extinguishing lightning protection device according to claim 8, characterized in that: The driving member comprises: spring; The shaft core is connected to the spring and can rotate under the drive of the spring.

10. The arc extinguishing lightning protection device according to any one of claims 1 to 4, characterized in that: The housing is provided with an exhaust hole, and the exhaust hole is communicated with the arc extinguishing chamber.

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