Arc extinguishing lightning protection device

Abstract

The invention belongs to the technical field of arc extinguishing and lightning protection, and discloses an arc extinguishing and lightning protection device which comprises an electrode chamber, an insulation chamber and a feeding chamber. When lightning stroke occurs, an electric arc is attracted by the upper electrode plate and passes through the arc through hole to form a conductive loop with the lower electrode plate, the electric arc burns in the electrode chamber, and air is heated and expanded to push the insulating soft wall to bend towards one side of the insulating chamber, so that the electric arc is lengthened to be cut off; if the arc is not cut off, the midpoint of the arc can be driven to move, and the purpose of lengthening the arc is achieved. The heat generated by arc combustion can melt the insulating part on the lower electrode plate, and the liquid insulating part covers the end face, facing the upper electrode plate, of the lower electrode plate to block communication between the upper electrode plate and the lower electrode plate so as to extinguish the arc. After the arc is extinguished, the liquid insulating part is discharged through the through hole, and in the process that the elastic part recovers deformation, the insulating part in the feeding chamber enters the electrode chamber to supplement the insulating part for the next arc extinguishing operation. Arc extinguishing materials do not need to be replaced regularly, continuous multiple arc extinguishing operation can be achieved, and good economical efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of arc extinguishing and lightning protection, and in particular to an arc extinguishing and lightning protection device. Background Art

[0002] Lightning is a common natural phenomenon with great harm, which always threatens the safe operation of power transmission and distribution lines. Among the current lightning protection methods, installing lightning arresters is a common lightning protection method. Lightning arresters can lead lightning current to themselves, thereby introducing strong current into the earth. However, after lightning strikes, strong arcs will be randomly generated, which will also affect the service life of power system components and even threaten the safe operation of the power system.

[0003] Most arc extinguishing and lightning protection devices disclosed in the prior art use gas arc extinguishing. However, simple gas arc extinguishing has certain limitations, such as the limited number of times the device can be used and the device needs to be replaced regularly, and the service life of a single device is limited, which increases the operation and maintenance costs of the power system and is less economical; and it takes a lot of manpower to complete the replacement and installation of the device, and it is impossible to achieve automatic arc extinguishing and lightning protection. Summary of the invention

[0004] The object of the present invention is to provide an arc extinguishing lightning protection device, which can achieve arc extinguishing effect by lengthening the arc, does not need to regularly replace arc extinguishing materials, and can extinguish arcs multiple times continuously.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Provided is an arc extinguishing lightning protection device, comprising:

[0007] The electrode chamber comprises an upper electrode plate, a lower electrode plate, an insulating side wall and an insulating partition, wherein the upper electrode plate and the lower electrode plate are arranged at two ends of the insulating side wall at intervals in the vertical direction; a through hole is provided on the lower electrode plate; the insulating partition is arranged between the upper electrode plate and the lower electrode plate, and an arc hole is provided on the insulating partition;

[0008] An insulating chamber is arranged at one side of the electrode chamber, an insulating soft wall is connected between the insulating chamber and the electrode chamber, an elastic member is connected between the insulating soft wall and the inner wall of the insulating chamber, and the elastic member extends in a horizontal direction; one end of the insulating partition is connected to the insulating soft wall, and the other end abuts against the insulating side wall;

[0009] A feed chamber, wherein a plurality of insulating parts are installed in the feed chamber, and the heat of arc burning can melt the insulating parts from solid to liquid. An inlet is opened on the insulating side wall, and the feed chamber is connected to the inlet;

[0010] The insulating partition has a blocked state in which it is blocked at the inlet and a separated state in which it is separated from the inlet.

[0011] As an optional solution for the arc extinguishing lightning protection device, an exhaust port is provided on the insulating side wall.

[0012] As an optional solution for the arc extinguishing lightning protection device, a plurality of exhaust ports are provided.

[0013] As an optional solution of the arc extinguishing lightning protection device, the lower electrode plate is arranged in a V shape, and the through hole is located at the lowest point of the lower electrode plate.

[0014] As an optional solution for the arc extinguishing lightning protection device, a plurality of through holes are arranged at intervals at the lowest point of the lower electrode plate.

[0015] As an optional solution for the arc extinguishing lightning protection device, the feed chamber includes:

[0016] A feed bin, wherein a plurality of insulating members are installed in the feed bin;

[0017] A feeding channel has a first end connected to the feeding bin and a second end connected to the inlet, and a height of the first end is higher than that of the second end.

[0018] As an optional solution for the arc extinguishing lightning protection device, the feed bin is made of a transparent material.

[0019] As an optional solution of the arc extinguishing lightning protection device, the insulating member is spherical, and the diameter of the insulating member is larger than the diameter of the through hole.

[0020] As an optional solution of the arc extinguishing lightning protection device, the insulating member is made of yellow wax material.

[0021] As an optional solution for the arc extinguishing lightning protection device, a plurality of elastic members are provided between the insulating soft wall and the inner wall of the insulating chamber, and each of the elastic members extends along the horizontal direction.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides an arc extinguishing lightning protection device. When there is no lightning strike, the elastic member is in a natural state, and a plurality of insulating members are stored on the lower electrode plate. When a lightning strike occurs, the arc is attracted by the upper electrode plate, passes through the arc hole and forms a conductive loop with the lower electrode plate, and the arc burns in the electrode chamber. The air in the electrode chamber expands due to heat, causing the insulating soft wall to bend toward the side close to the insulating chamber, thereby achieving the effect of lengthening the arc in the horizontal direction to cut off the arc; even if the arc is not completely cut off, it can drive the arc midpoint to move to one side, thereby achieving the effect of lengthening the arc path. At the same time, the heat generated by the arc burning can melt the insulating member on the lower electrode plate, causing the insulating member, which is solid at room temperature, to be converted into a liquid state, and spread over the entire end face of the lower electrode plate facing the upper electrode plate, thereby blocking the connection between the arc and the lower electrode plate, thereby achieving the purpose of extinguishing the arc. After the arc is extinguished, the liquid insulating member can be discharged from the electrode chamber through the through hole on the lower electrode plate. In addition, during the process of the elastic parts in the insulating chamber recovering their elastic deformation, the insulating parts in the feed chamber enter the electrode chamber through the inlet on the insulating side wall and fall onto the lower electrode plate to replenish the insulating parts for the next arc extinguishing operation. After the lightning strike ends, the air expansion degree in the electrode chamber decreases, and the insulating soft wall moves to the side close to the electrode chamber under the elastic force of the elastic parts, driving the insulating partition to switch to the blocking state at the inlet, preventing the insulating parts from continuing to fall, and waiting for the next arc extinguishing operation. The device does not need to regularly replace the arc extinguishing material, can realize multiple consecutive arc extinguishing operations, and has good economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an arc extinguishing lightning protection device provided in a specific implementation example of the present invention, omitting some structures;

[0025] Figure 2 It is a cross-sectional view of an arc extinguishing lightning protection device provided in an embodiment of a specific implementation manner of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the insulating partition provided in the specific implementation example of the present invention when it is in a blocked state.

[0027] In the figure:

[0028] 1. Electrode chamber;

[0029] 11. Upper electrode plate;

[0030] 12. lower electrode plate; 120. through hole;

[0031] 13. Insulating side wall; 130. Inlet; 131. Exhaust port;

[0032] 14. Insulating partition; 140. Arc hole;

[0033] 2. Insulation chamber; 21. Insulation soft wall; 22. Elastic part;

[0034] 3. Feeding chamber; 30. Insulating member; 31. Feeding bin; 32. Feeding channel. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0040] like Figures 1 to 3As shown, this embodiment provides an arc extinguishing lightning protection device, including an electrode chamber 1, an insulating chamber 2 and a feeding chamber 3, wherein the electrode chamber 1 includes an upper electrode plate 11, a lower electrode plate 12, an insulating side wall 13 and an insulating partition 14, and the upper electrode plate 11 and the lower electrode plate 12 are arranged at both ends of the insulating side wall 13 in a vertical direction. A through hole 120 is provided on the lower electrode plate 12. The insulating partition 14 is arranged between the upper electrode plate 11 and the lower electrode plate 12, and an arc hole 140 is provided on the insulating partition 14. The insulating chamber 2 is arranged on one side of the electrode chamber 1, and an insulating soft wall 21 is connected between the insulating chamber 2 and the electrode chamber 1, and an elastic member 22 is connected between the insulating soft wall 21 and the inner wall of the insulating chamber 2, and the elastic member 22 extends in the horizontal direction. One end of the insulating partition 14 is connected to the insulating soft wall 21, and the other end abuts against the insulating side wall 13. The feed chamber 3 is provided with a plurality of insulating members 30. The insulating side wall 13 is provided with an inlet 130. The feed chamber 3 is connected to the inlet 130. The insulating members 30 can enter the electrode chamber 1 through the inlet 130. The insulating partition 14 has a blocking state of blocking the inlet 130 and a separation state of being separated from the inlet 130.

[0041] When there is no lightning strike, the elastic member 22 is in a natural state, and a plurality of insulating members 30 are stored on the lower electrode plate 12. When a lightning strike occurs, the arc is attracted by the upper electrode plate 11, and passes through the arc hole 140 to form a conductive loop with the lower electrode plate 12. The arc burns in the electrode chamber 1, and the air in the electrode chamber 1 expands due to the heat, causing the insulating soft wall 21 to bend toward the side close to the insulating chamber 2, thereby lengthening the arc in the horizontal direction to cut off the arc; even if the arc is not completely cut off, it can drive the arc midpoint to move to one side, thereby lengthening the arc path. At the same time, the heat generated by the arc burning can melt the insulating member 30 on the lower electrode plate 12, so that the insulating member 30, which is solid at room temperature, is converted into a liquid state, and spreads over the entire end face of the lower electrode plate 12 facing the upper electrode plate 11, thereby blocking the connection between the arc and the lower electrode plate 12, thereby extinguishing the arc. After the arc is extinguished, the liquid insulating member 30 can be discharged from the electrode chamber 1 through the through hole 120 on the lower electrode plate 12. In addition, during the process of the elastic member 22 in the insulating chamber 2 recovering its elastic deformation, the insulating member 30 in the feed chamber 3 enters the electrode chamber 1 through the inlet 130 on the insulating side wall 13, and falls onto the lower electrode plate 12, replenishing the insulating member 30 for the next arc extinguishing operation. After the lightning strike ends, the expansion degree of the air in the electrode chamber 1 decreases, and the insulating soft wall 21 moves to the side close to the electrode chamber 1 under the elastic force of the elastic member 22, driving the insulating partition 14 to switch to a blocking state at the inlet 130, preventing the insulating member 30 from continuing to fall, and waiting for the next arc extinguishing operation. The device does not need to regularly replace the arc extinguishing material, can realize multiple consecutive arc extinguishing operations, and has good economy.

[0042] Specifically, in this embodiment, the insulating side wall 13 is C-shaped, and the insulating side wall 13, the upper electrode plate 11, the lower electrode plate 12 and the insulating soft wall 21 together form a closed hexahedral structure; the insulating chamber 2 is surrounded by five insulating plates, and the five insulating plates and the insulating soft wall 21 also together form a closed hexahedral structure.

[0043] Illustratively, in this embodiment, only one arc passing hole 140 is provided on the insulating partition 14 . In other embodiments, a plurality of arc passing holes 140 may be provided, which is not specifically limited herein.

[0044] Optionally, a plurality of elastic members 22 are provided between the insulating soft wall 21 and the inner wall of the insulating chamber 2, and each elastic member 22 extends in the horizontal direction. The provision of the plurality of elastic members 22 can ensure the stability of the insulating soft wall 21 during deformation.

[0045] Exemplarily, in this embodiment, two elastic members 22 are provided, and the elastic members 22 are springs, which have the advantages of easy deformation and high elasticity, and are easy to obtain and have good economy. In other embodiments, the number of elastic members 22 can be set as needed, and the elastic members 22 can also be elastic rubber, etc.

[0046] Optionally, an exhaust port 131 is provided on the insulating side wall 13. The exhaust port 131 is provided to connect the electrode chamber 1 with the external environment to accelerate the heat diffusion in the electrode chamber 1, thereby helping to extinguish the arc.

[0047] Furthermore, a plurality of exhaust ports 131 are provided to further accelerate the heat diffusion in the electrode chamber 1 and improve the arc extinguishing efficiency.

[0048] Specifically, in the present embodiment, only one exhaust port 131 is provided, and the exhaust port 131 is provided on the wall surface opposite to the insulating side wall 13 and the insulating soft wall 21; in other embodiments, a plurality of exhaust ports 131 may be provided, and the plurality of exhaust ports 131 may all be provided on the wall surface opposite to the insulating soft wall 21, or may be provided on the wall surface adjacent to the insulating soft wall 21.

[0049] Optionally, the lower electrode plate 12 is arranged in a V-shape, and the through hole 120 is located at the lowest point of the lower electrode plate 12. The above arrangement can ensure that the melted liquid insulating member 30 can be discharged from the electrode chamber 1, and at the same time ensure that the upper electrode plate 11 can be connected with the lower electrode plate 12 during the next arc extinguishing operation, thereby ensuring the smooth implementation of continuous arc extinguishing.

[0050] Alternatively, in other embodiments, the lower electrode plate 12 is not limited to being arranged in a V-shape. The lower electrode plate 12 may also be slightly higher around and slightly lower in the middle, and the through hole 120 is arranged at a slightly lower position in the middle.

[0051] Furthermore, a plurality of through holes 120 are arranged at intervals at the lowest part of the lower electrode plate 12 so that the melted liquid insulating member 30 can be discharged in time.

[0052] Specifically, in this embodiment, only one through hole 120 is provided; in other embodiments, the number of through holes 120 can be set as needed.

[0053] Optionally, the feeding chamber 3 includes a feeding bin 31 and a feeding channel 32. The feeding bin 31 contains a plurality of insulating parts 30. The first end of the feeding channel 32 is connected to the feeding bin 31, and the second end is connected to the inlet 130. The height of the first end is higher than that of the second end to ensure that the insulating parts 30 in the feeding bin 31 can smoothly enter the electrode chamber 1 through the inlet 130 under the action of their own gravity.

[0054] Furthermore, the feed bin 31 is made of a transparent material. Specifically, the feed bin 31 is made of a transparent acrylic plate, so that the storage amount of the insulating member 30 in the feed bin 31 can be observed in real time to ensure the smooth progress of the continuous arc extinguishing operation.

[0055] Optionally, the insulating member 30 is spherical, which is more conducive to the insulating member 30 entering the electrode chamber 1, and the diameter of the insulating member 30 is larger than the diameter of the through hole 120 to prevent the solid insulating member 30 from leaking out of the through hole 120.

[0056] Alternatively, in other embodiments, the insulating member 30 may also be in other shapes, but the size of the insulating member 30 cannot be smaller than the size of the through hole 120 .

[0057] Optionally, the insulating member 30 is made of yellow wax material, which has insulating properties and is solid at room temperature. It can be converted into liquid after high-temperature heating. The liquid yellow wax material has good fluidity and can be discharged through the through hole 120 in time.

[0058] Alternatively, in other embodiments, the insulating member 30 may also be other insulating materials as long as they have insulating properties and can be transformed into liquid at high temperatures.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An arc extinguishing lightning protection device, characterized in that: include: An electrode chamber (1) comprises an upper electrode plate (11), a lower electrode plate (12), an insulating side wall (13) and an insulating partition (14); the upper electrode plate (11) and the lower electrode plate (12) are arranged at intervals at two ends of the insulating side wall (13) in a vertical direction; a through hole (120) is provided on the lower electrode plate (12); the insulating partition (14) is arranged between the upper electrode plate (11) and the lower electrode plate (12), and an arc hole (140) is provided on the insulating partition (14); An insulating chamber (2) is arranged on one side of the electrode chamber (1); an insulating soft wall (21) is connected between the insulating chamber (2) and the electrode chamber (1); an elastic member (22) is connected between the insulating soft wall (21) and the inner wall of the insulating chamber (2); the elastic member (22) extends in a horizontal direction; one end of the insulating partition (14) is connected to the insulating soft wall (21), and the other end abuts against the insulating side wall (13); A feed chamber (3), wherein a plurality of insulating members (30) are arranged in the feed chamber (3), and the heat of arc burning can cause the insulating members (30) to melt from a solid state to a liquid state, an inlet (130) is provided on the insulating side wall (13), and the feed chamber (3) is connected to the inlet (130); The insulating partition (14) has a blocked state in which it is blocked at the inlet (130) and a separated state in which it is separated from the inlet (130).

2. The arc extinguishing lightning protection device according to claim 1, characterized in that: An exhaust port (131) is provided on the insulating side wall (13).

3. The arc extinguishing lightning protection device according to claim 2, characterized in that: A plurality of exhaust ports (131) are provided.

4. The arc extinguishing lightning protection device according to claim 1, characterized in that: The lower electrode plate (12) is arranged in a V shape, and the through hole (120) is located at the lowest point of the lower electrode plate (12).

5. The arc extinguishing lightning protection device according to claim 4, characterized in that: A plurality of through holes (120) are arranged at intervals at the lowest point of the lower electrode plate (12).

6. The arc extinguishing lightning protection device according to claim 1, characterized in that: The feed chamber (3) comprises: A material supply bin (31), wherein a plurality of insulating members (30) are installed in the material supply bin (31); A feeding channel (32) has a first end connected to the feeding bin (31) and a second end connected to the inlet (130), and the first end is located at a higher height than the second end.

7. The arc extinguishing lightning protection device according to claim 6, characterized in that: The feeding bin (31) is made of transparent material.

8. The arc extinguishing lightning protection device according to any one of claims 1 to 7, characterized in that: The insulating member (30) is spherical, and the diameter of the insulating member (30) is greater than the diameter of the through hole (120).

9. The arc extinguishing lightning protection device according to any one of claims 1 to 7, characterized in that: The insulating member (30) is made of yellow wax material.

10. The arc extinguishing lightning protection device according to any one of claims 1 to 7, characterized in that: A plurality of elastic members (22) are arranged between the insulating soft wall (21) and the inner wall of the insulating chamber, and each of the elastic members (22) extends along the horizontal direction.

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