An insulator structure with a liquid-electric effect arc-extinguishing module separated from an insulator load-bearing rod

Abstract

This utility model discloses an insulator structure in which the electrohydraulic arc-extinguishing module is separated from the insulator support rod. The arc-extinguishing structure includes an insulator and a first arc-extinguishing cylinder and a second arc-extinguishing cylinder respectively disposed on the outer sides of the upper and lower ends of the insulator. An upper metal connecting column is vertically connected upwards at the upper end of the insulator, and a lower metal connecting column is vertically connected downwards at the lower end of the insulator. A first electrode at one end of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column through an upper arc-inducing electrode, and a second electrode at the other end of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column through a lower arc-inducing electrode. This utility model can reduce the time for arc energy to be injected into the arc-extinguishing lightning protection structure, reduce the injected energy intensity, and attenuate the temperature rise effect of the destructive energy, thus not only destroying the conditions for the arc-extinguishing chamber to explode, but also improving the safety of the arc-extinguishing lightning protection module.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection technology, and in particular to an insulator structure in which the hydraulic-electric effect arc extinguishing module is separated from the insulator load-bearing rod. Background Technology

[0002] Insulators in power systems primarily perform insulation and load-bearing functions, lacking lightning protection capabilities. Their lightning protection is only enhanced by adding external lightning protection devices, which leads to complex installation and large space requirements. Lightning protection insulators feature an integrated structure combining load-bearing and arc-extinguishing lightning protection. Their advantages include comprehensive functionality, compact structure, and easy installation. However, their disadvantage is the high probability of the lightning protection module exploding, potentially damaging the insulator's load-bearing structure and causing a power line fall. Therefore, integrated lightning protection and load-bearing insulators are not yet widely used. Single-function load-bearing insulators lack lightning protection and arc-extinguishing capabilities, requiring external lightning protection devices, resulting in large space requirements and complex installation. Furthermore, the existing integrated lightning protection and load-bearing insulator structure is susceptible to damage from lightning strikes, leading to explosions and further damage to the load-bearing structure, potentially causing a power line fall. Therefore, reducing the risk of damage to the load-bearing structure from the lightning protection module is a key issue in overcoming the operational safety bottleneck of lightning protection insulators. Utility Model Content

[0003] The purpose of this invention is to provide an insulator structure in which the electrohydraulic arc-extinguishing module is separated from the insulator support rod. This invention can reduce the time for arc energy to be injected into the arc-extinguishing and lightning protection structure, enhance the ability to block the injected energy intensity, and attenuate the temperature rise effect of the destructive energy. This not only destroys the conditions for an explosion in the arc-extinguishing chamber but also improves the safety of the arc-extinguishing and lightning protection module. To achieve the above objectives, this invention employs the following technical effects:

[0004] According to one aspect of the present invention, the present invention provides an insulator structure in which the electrohydraulic arc extinguishing module is separated from the insulator support rod. The insulator structure includes an insulator and a first arc extinguishing cylinder and a second arc extinguishing cylinder respectively disposed on the outer sides of the upper and lower ends of the insulator. An upper metal connecting column is vertically connected upward at the upper end of the insulator, and a lower metal connecting column is vertically connected downward at the lower end of the insulator. A first electrode at one end of the first arc extinguishing cylinder is connected to the outer wall of the upper metal connecting column through an upper arc-leading electrode, and a second electrode at the other end of the second arc extinguishing cylinder is connected to the outer wall of the lower metal connecting column through a lower arc-leading electrode. Multiple insulating skirts are provided at equal intervals on the outer wall between the upper and lower ends of the insulator.

[0005] In a further preferred embodiment of the above scheme, the first arc-extinguishing cylinder is disposed on the uppermost insulating skirt edge of the insulator or on the outside of the insulating skirt edge, and the second arc-extinguishing cylinder is disposed on the lowermost insulating skirt edge of the insulator or on the outside of the insulating skirt edge.

[0006] In a further preferred embodiment of the above scheme, the first arc-extinguishing cylinder is disposed on the outer side of the uppermost insulating skirt of the insulator, and the second arc-extinguishing cylinder is disposed on the outer side of the lowermost insulating skirt of the insulator.

[0007] An upper circular ring is fixed to the lightning electrode on the outer periphery of the insulating load-bearing column below the insulating skirt at the top of the insulator. The first electrode at one end of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column at the top of the insulator through the upper arc-starting electrode. The second electrode at the other end of the first arc-extinguishing cylinder is connected to the upper circular ring to the lightning electrode below the insulating skirt at the top of the insulator through the lower arc-starting electrode.

[0008] A lower circular ring is fixed to the outer periphery of the insulating load-bearing column above the insulating skirt at the bottom of the insulator. The first electrode at one end of the second arc-extinguishing cylinder is connected to the lower circular ring to the lightning electrode above the insulating skirt at the bottom of the insulator via an upper arc-starting electrode. The second electrode at the other end of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column at the bottom of the insulator via a lower arc-starting electrode.

[0009] In a further preferred embodiment of the above scheme, the first arc-extinguishing cylinder is disposed on the edge of the uppermost insulating skirt of the insulator, and the second arc-extinguishing cylinder is disposed on the edge of the lowermost insulating skirt of the insulator, with the first and second arc-extinguishing cylinders located on the same vertical line.

[0010] In a further preferred embodiment of the above scheme, an upper positioning electrode and a lower positioning electrode are respectively provided on the upper and lower surfaces of the edge of each insulating skirt between the uppermost and lowermost insulating skirts of the insulator. The first electrode and the second electrode of the first arc-extinguishing cylinder, as well as the first electrode and the second electrode of the second arc-extinguishing cylinder, are all on the same vertical line as the upper positioning electrode and the lower positioning electrode.

[0011] In a further preferred embodiment of the above scheme, a third arc-extinguishing cylinder is provided on the edge of each insulating skirt between the uppermost and lowermost insulating skirts of the insulator. The first electrode of the third arc-extinguishing cylinder is connected to the edge of the insulating skirt, and the second electrode of the third arc-extinguishing cylinder is suspended. The first and second electrodes of the third arc-extinguishing cylinder, the first arc-extinguishing cylinder, and the second arc-extinguishing cylinder are all arranged in the same straight line.

[0012] In a further preferred embodiment of the above scheme, the first arc-extinguishing cylinder is disposed on the outer wall of the upper or lower surface of the insulating skirt at the uppermost end of the insulator, the second arc-extinguishing cylinder is disposed on the outer wall of the upper or lower surface of the insulating skirt at the lowermost end of the insulator, and a third arc-extinguishing cylinder is disposed on the upper or lower surface of each insulating skirt between the uppermost and lowermost insulating skirts of the insulator.

[0013] In a further preferred embodiment of the above scheme, the first, second, and third arc-extinguishing cylinders are respectively arranged in an arc shape on the upper or lower surface of the insulating skirt. The first electrode of the first, second, and third arc-extinguishing cylinders has a first bending portion that bends vertically upward, and the second electrode of the first, second, and third arc-extinguishing cylinders has a second bending portion that bends vertically downward.

[0014] Furthermore, the second bending portion of the second electrode of the first arc-extinguishing cylinder that bends vertically downwards and the first bending portion of the first electrode of the lower third arc-extinguishing cylinder that bends vertically upwards are arranged with a gap on the same vertical line. The first bending portion of the first electrode of the second arc-extinguishing cylinder that bends vertically upwards and the second bending portion of the second electrode of the upper third arc-extinguishing cylinder that bends vertically downwards are arranged with a gap on the same vertical line. In the two adjacent third arc-extinguishing cylinders, the second bending portion of the second electrode end of the upper third arc-extinguishing cylinder that bends vertically downwards and the first bending portion of the first electrode end of the lower third arc-extinguishing cylinder that bends vertically upwards are arranged with a gap on the same vertical line.

[0015] The first electrode of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column through the first bend and the upper arc-starting electrode, and the second electrode of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column through the second bend and the lower arc-starting electrode.

[0016] In a further preferred embodiment of the above scheme, the first, second, and third arc-extinguishing cylinders are arc-shaped cylindrical structures, and are arranged in an arc shape on the outer wall of the upper or lower surface of the corresponding insulating skirt. The first electrode is connected to the first bent portion by threads and screw holes, and the second electrode is connected to the second bent portion by threads and screw holes.

[0017] In a further preferred embodiment of the above scheme, the first arc-extinguishing cylinder, the second arc-extinguishing cylinder, and the third arc-extinguishing cylinder have a semi-circular arc-shaped cylindrical structure.

[0018] In summary, this utility model adopts the above-described technical solution and has the following technical effects:

[0019] (1) The liquid-electric effect arc extinguishing and lightning protection structure destroys the conditions for the arc extinguishing chamber to explode from three dimensions: shortening the energy injection time, attenuating the energy injection intensity, and attenuating the temperature rise effect of the destruction energy, thereby improving the safety of the arc extinguishing and lightning protection module.

[0020] (2) The liquid inside the electrohydraulic arc extinguishing and lightning protection junction has a large specific heat capacity. The liquid is water, and the specific heat capacity of water is 4200 J / kg·K. The large specific heat capacity can significantly reduce the temperature rise effect of the water medium and eliminate the risk of high temperature explosion. Moreover, the electrohydraulic arc extinguishing time is short, only tens of microseconds, which reduces the time for the arc extinguishing module to inject energy and plays a restraining role in temperature rise.

[0021] (3) Due to the adoption of a separate structure for the lightning protection module and the load-bearing module, the insulator has the characteristics of complete functions, compact structure and convenient installation.

[0022] (4) The electrohydraulic effect has a large arc extinguishing threshold. The arc extinguishing threshold covers the actual power frequency short-circuit current, and there is no arc extinguishing "dead zone", which eliminates the explosion caused by arc extinguishing failure due to "negative deviation" of the arc extinguishing threshold. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first embodiment of an insulator structure that separates the electrohydraulic arc extinguishing module from the insulator support rod according to this utility model;

[0024] Figure 2 This is a schematic diagram of the installation structure of the first embodiment of the insulator structure of the present invention, which separates the hydraulic-electric effect arc extinguishing module from the insulator support rod;

[0025] Figure 3 This is a schematic diagram of the second embodiment of an insulator structure in which the electrohydraulic arc extinguishing module and the insulator support rod are separated;

[0026] Figure 4 This is a schematic diagram of the installation structure of the second embodiment of the insulator structure of the present invention, in which the hydraulic-electric effect arc extinguishing module is separated from the insulator support rod.

[0027] Figure 5 This is a schematic diagram of the third embodiment of an insulator structure in which the electrohydraulic arc extinguishing module and the insulator support rod are separated;

[0028] Figure 6 This is a schematic diagram of the installation structure of the third embodiment of the insulator structure of the present invention, which separates the hydraulic-electric effect arc extinguishing module from the insulator support rod;

[0029] Figure 7 This is a schematic diagram of the fourth embodiment of an insulator structure that separates the electrohydraulic arc extinguishing module from the insulator support rod according to this utility model;

[0030] Figure 8 This is a schematic diagram of the installation structure of the fourth embodiment of the insulator structure of the present invention, in which the hydraulic-electric effect arc extinguishing module is separated from the insulator support rod;

[0031] Figure 9 This is a schematic diagram of the arc-extinguishing cylinder structure according to the fourth embodiment of this utility model;

[0032] In the attached diagram, the components are: insulator 1, first arc-extinguishing cylinder 2, second arc-extinguishing cylinder 3, upper metal connecting post 4, lower metal connecting post 5, insulating skirt 6, upper ring connecting to lightning electrode 7, lower ring connecting to lightning electrode 8, upper positioning electrode 9, lower positioning electrode 10, third arc-extinguishing cylinder 11, first electrode 20, upper arc-starting electrode 21, second electrode 22, lower arc-starting electrode 23, first bending part 24, second bending part 25, horizontal support member 26, and clamp 27. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0034] Example 1, combined with Figure 1 and Figure 2 As shown, according to this utility model, an insulator structure with a liquid-electric effect arc extinguishing module separated from the insulator support rod includes an insulator 1 and a first arc extinguishing cylinder 2 and a second arc extinguishing cylinder 3 suspended on the outer sides of the upper and lower ends of the insulator 1, respectively. An upper metal connecting column 4 is vertically connected upward at the upper end of the insulator 1, and a lower metal connecting column 5 is vertically connected downward at the lower end of the insulator 1. The first electrode 20 at one end of the first arc extinguishing cylinder 2 is connected to the outer wall of the upper metal connecting column 4 through an upper arc-leading electrode 21. The second electrode 22 at the other end of the second arc extinguishing cylinder 3 is connected to the outer wall of the lower metal connecting column 5 through a lower arc-leading electrode 23. The upper metal connecting column 4 at the upper end of the insulator 1 is connected to the first electrode 20 through the upper arc-leading electrode 21. The lightning arc can flow from the upper metal connecting column 4 through the upper arc-leading electrode 21 into the first arc extinguishing cylinder 2 to extinguish the arc. This invention utilizes a load-bearing module (insulator 1) and a lightning protection module (first arc-extinguishing cylinder 2 and second arc-extinguishing cylinder 3), each functioning independently. The load-bearing module (insulator 1) provides load-bearing and insulation; the lightning protection module or arc-extinguishing device (first arc-extinguishing cylinder 2 and second arc-extinguishing cylinder 3) provides arc-extinguishing. Even if the arc-extinguishing device is damaged by lightning, the overall structure only loses its arc-extinguishing function; the load-bearing module (insulator 1) retains its load-bearing and insulation functions, preventing the main structure from falling off.

[0035] In this embodiment of the invention, multiple insulating skirts 6 are evenly spaced on the outer wall of the insulating load-bearing column between the upper and lower ends of the insulator 1. The first arc-extinguishing cylinder 2 is disposed on the uppermost insulating skirt 6 of the insulator 1 or on the outside of the insulating skirt 6, and the second arc-extinguishing cylinder 3 is disposed on the lowermost insulating skirt 6 of the insulator 1 or on the outside of the insulating skirt 6. The first arc-extinguishing cylinder 2 is disposed on the outside of the uppermost insulating skirt 6 of the insulator 1, and the second arc-extinguishing cylinder 3 is disposed on the outside of the lowermost insulating skirt 6 of the insulator 1. An upper circular ring lightning electrode 7 is fixed on the outer wall of the insulating load-bearing column below the uppermost insulating skirt 6 of the insulator 1. The first electrode 2 at one end of the first arc-extinguishing cylinder 2 is... The upper arc-starting electrode 21 is connected to the outer wall of the upper metal connecting post 4 at the upper end of the insulator 1. The second electrode 22 at the other end of the first arc-extinguishing cylinder 2 is connected to the upper circular ring lightning electrode 7 below the uppermost insulating skirt 6 of the insulator 1 via the lower arc-starting electrode 23. A lower circular ring lightning electrode 8 is fixed on the outer wall of the insulating load-bearing post above the insulating skirt 6 at the lower end of the insulator 1. The first electrode 20 at one end of the second arc-extinguishing cylinder 3 is connected to the lower circular ring lightning electrode 8 above the insulating skirt 6 at the lower end of the insulator 1 via the upper arc-starting electrode 21. The second electrode 22 at the other end of the second arc-extinguishing cylinder 3 is connected to the outer wall of the lower metal connecting post 5 at the lower end of the insulator 1 via the lower arc-starting electrode 23. The upper circular lightning electrode 7 is located below the top insulating skirt 6 of the insulator 1 and is fixed close to the insulating support column of the insulator 1. It is connected to the second electrode 22 through the lower arc-starting electrode 23. The lower circular lightning electrode 8 is located above the bottom insulating skirt 6 of the insulator 1 and is fixed close to the insulating support column of the insulator 1. For lightning flashovers that occur directly at the insulating support column or the skirt of the insulator 1, the lightning will eventually flow to the arc-extinguishing cylinder through the upper circular lightning electrode 7 or the lower circular lightning electrode 8 to complete the arc extinguishing.

[0036] Example 2, as Figure 3 and Figure 4As shown, the first arc-extinguishing cylinder 2 is disposed on the edge of the uppermost insulating skirt 6 of the insulator 1, and the second arc-extinguishing cylinder 3 is disposed on the edge of the lowermost insulating skirt 6 of the insulator 1, with the first arc-extinguishing cylinder 2 and the second arc-extinguishing cylinder 3 located on the same vertical line; in this embodiment, symmetrical upper positioning electrodes 9 and lower positioning electrodes 10 are respectively disposed on the upper and lower surfaces of the edge of each insulating skirt 6 between the uppermost and lowermost insulating skirt 6 of the insulator 1, and symmetrical upper positioning electrodes 9 and lower positioning electrodes 10 are disposed on the same vertical line, and the first electrode 20, the second electrode 22 of the first arc-extinguishing cylinder 2 and the second electrode 10 are disposed on the edge of the insulating skirt 6 between the uppermost and lowermost insulating skirt 6 of the insulator 1. The first electrode 20 and the second electrode 22 of the two arc-extinguishing cylinders 3 are all on the same vertical line as the upper positioning electrode 9 and the lower positioning electrode 10. The first arc-extinguishing cylinder 2 (upper arc-extinguishing cylinder) and the second arc-extinguishing cylinder 3 (lower arc-extinguishing cylinder) are fixedly installed at the insulating skirts 6 at the upper and lower ends of the insulator 1. The other insulating skirts 6 are fixedly installed with positioning electrodes by clamps. Each positioning electrode includes an upper positioning electrode 9 and a lower positioning electrode 10. For low-intensity lightning arcs: when the arc flows through the upper metal connecting post 4 at the upper end of the insulator 1, the arc will flow through the upper arc-initiating electrode 21 to the first electrode 20 of the first arc-extinguishing cylinder 2 (upper arc-extinguishing cylinder) and be extinguished in the first arc-extinguishing cylinder 2.

[0037] The electric arc starts from the upper metal connecting post 4, flows sequentially through the upper arc-starting electrode 21 and the first electrode 20, and then enters the first arc-extinguishing cylinder 2 to extinguish the arc for the first time through the electrohydraulic effect, achieving the initial attenuation of the arc intensity. Then, the arc flows out from the second electrode 22, breaks down the air gap between the second electrode 22 and the upper positioning electrode 9, and flashes to the next-level upper positioning electrode 9. Then, it flows out from the lower positioning electrode 10, breaks down the air gap below the lower positioning electrode 10, and flashes to the next-level upper positioning electrode 9. After multiple flashovers, the arc finally reaches the first electrode 20 connected to the insulating skirt 6 at the bottom of the insulator 1, and then enters the second arc-extinguishing cylinder 3 at the bottom of the insulator 1 to extinguish the arc again through the electrohydraulic effect, completely extinguishing the arc. The residual arc after multiple attenuations flows from the second electrode 22 and the lower arc-starting electrode 23 at the bottom of the insulator 1 to the lower metal connecting post 5, thereby eliminating the residual arc at the bottom of the insulator 1.

[0038] For high-intensity lightning arcs: Due to the presence of the upper positioning electrode 9 and the lower positioning electrode 10, the high-intensity lightning arcs that are not completely extinguished will flow through the upper positioning electrode 9 and the lower positioning electrode 10 to the second arc-extinguishing cylinder 3 (lower arc-extinguishing cylinder) fixedly installed at the insulating skirt 6 at the lowest end of the insulator 1. The high-intensity lightning arcs that are not completely extinguished will flow from the upper positioning electrode 9 and the lower positioning electrode 10 to the first electrode 20 of the second arc-extinguishing cylinder 3 (lower arc-extinguishing cylinder) in sequence, and be extinguished again in the second arc-extinguishing cylinder 3.

[0039] Example 3, as Figure 5 and Figure 6 As shown, a third arc-extinguishing cylinder 11 is suspended on the outer edge of each insulating skirt 6 between the uppermost and lowermost insulating skirt 6 of the insulator 1. The first electrode 20 of the third arc-extinguishing cylinder 11 is connected to the edge of the insulating skirt 6, and the second electrode 22 of the third arc-extinguishing cylinder 11 is suspended. The first electrode 20 and the second electrode 22 of the third arc-extinguishing cylinder 11, the first arc-extinguishing cylinder 2, and the second arc-extinguishing cylinder 3 are all arranged in a straight line. When the arc flows through the upper metal connecting post 4 at the upper end of the insulator 1, the arc will flow through the upper arc-initiating electrode 21 to the first electrode 20 of the first arc-extinguishing cylinder 2 (upper arc-extinguishing cylinder). The first electrode 20 guides the arc into the first arc-extinguishing cylinder 2, and the arc is extinguished by the electrohydraulic effect inside the cylinder. The arc flows from the upper metal connecting post 4 at the upper end of the insulator 1 through the upper arc-initiating electrode 21 and the first electrode 20 into the first arc-extinguishing cylinder 2, where the first electrohydraulic effect extinguishing occurs, achieving the initial attenuation of the arc intensity. Then the electric arc flows out from the top second electrode 22 (first stage electrode), breaks through the air gap below and flashes to the first electrode 20 of the next stage third arc-extinguishing cylinder 11 (arc extinguishing device). After passing through the first electrode 20, it enters the third arc-extinguishing cylinder 11 (arc extinguishing device) and the hydraulic-electric effect extinguishes the arc again until it is extinguished and decayed in the second arc-extinguishing cylinder 3 at the bottom of the insulator 1. The electric arc flashes and decays step by step downwards in this way, achieving a multi-stage arc extinguishing effect.

[0040] For high-intensity lightning arcs: Since arc-extinguishing cylinders are also installed and fixed on the remaining insulating skirts 6, when a high-intensity lightning arc flows into the first arc-extinguishing cylinder 2, a hydroelectric effect occurs in each arc-extinguishing cylinder, and the arc intensity is gradually attenuated and suppressed, thus extinguishing the arc. Any high-intensity lightning arcs that are not completely extinguished will flow sequentially from the second electrode 22 of the first arc-extinguishing cylinder 2 into multiple third arc-extinguishing cylinders 11 spaced apart on the same vertical line. They will then flow from the first electrode 20 into the third arc-extinguishing cylinder 11 and through the second electrode 22 into the next third arc-extinguishing cylinder 11, causing the arc intensity to be gradually attenuated and suppressed, achieving multiple attenuation arc extinguishing.

[0041] Example 4, as Figure 7 and 8As shown, the first arc-extinguishing cylinder 2 is arranged around the edge of the uppermost insulating skirt 6 of the insulator 1, the second arc-extinguishing cylinder 3 is arranged around the edge of the lowermost insulating skirt 6 of the insulator 1, and a third arc-extinguishing cylinder 11 is arranged on the edge of each insulating skirt 6 between the uppermost and lowermost insulating skirt 6 of the insulator 1; in this utility model, the first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 are respectively arranged in an arc shape around the outer side, upper surface, or lower surface of the corresponding insulating skirt 6 edge, wherein the first arc-extinguishing cylinder 2 and the third arc-extinguishing cylinder 3, and the second arc-extinguishing cylinder 3 and the third arc-extinguishing cylinder 11 are located on opposite sides of the edges of adjacent insulating skirts 6, the first electrode 20 of the first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 has a first bending portion 24 that bends vertically upwards, and the first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 are arranged in an arc shape around the edge of the corresponding insulating skirt 6. The second electrodes 22 of the second arc-extinguishing cylinder 3 and the third arc-extinguishing cylinder 11 have a vertically downward bent second bend 25; and the vertically downward bent second bend 25 on the second electrode 22 of the first arc-extinguishing cylinder 2 and the vertically upward bent first bend 24 on the first electrode 20 of the lower third arc-extinguishing cylinder 11 are arranged with a gap on the same vertical line; the vertically upward bent first bend 24 on the first electrode 20 of the second arc-extinguishing cylinder 3 and the vertically downward bent second bend 25 on the second electrode 22 of the upper third arc-extinguishing cylinder 11 are arranged with a gap on the same vertical line; in the two adjacent third arc-extinguishing cylinders 11, the vertically downward bent second bend 25 at the end of the second electrode 22 of the upper third arc-extinguishing cylinder 11 and the vertically upward bent first bend 24 at the end of the first electrode 20 of the lower third arc-extinguishing cylinder 11 are arranged with a gap on the same vertical line;

[0042] The electric arc begins at the upper metal connecting post 4 at the top of the insulator 1, flows sequentially through the upper arc-initiating electrode 21 and the first bend 24, and then enters the horizontally (laterally) first arc-extinguishing cylinder 2 (upper arc-extinguishing cylinder) where it undergoes electrohydraulic extinguishing, achieving primary arc extinguishing. The arc then flows out from the second bend 25, breaks through the air gap between the second bend 25 and the next bend 24, and flashes onto the first bend 24. It then enters the progressively descending third arc-extinguishing cylinder 11 for further downward flashover and attenuation. After multiple stages of arc extinguishing, the arc is completely extinguished.

[0043] In this embodiment of the invention, the first electrode 20 of the first arc-extinguishing cylinder 2 is connected to the outer wall of the upper metal connecting post 4 via the first bending portion 24 and the upper arc-leading electrode 21. The second electrode 22 of the second arc-extinguishing cylinder 3 is connected to the outer wall of the lower metal connecting post 5 via the second bending portion 25 and the lower arc-leading electrode 23. The first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 have an arc-shaped cylindrical structure. The first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 are arranged in an arc shape on the outer wall of the upper or lower surface of the corresponding insulating skirt 6. The first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 have a semi-circular arc-shaped cylindrical structure. The inner walls of the first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 3 are respectively connected to the insulation of the insulator 1 via horizontal support members 26. On the outer wall of the load-bearing column, the horizontal support member 26 is a horizontal support rod or horizontal support pipe, etc.; the end of the horizontal support member 26 is provided with a clamp 27. The inner wall of the first arc-extinguishing cylinder, the inner wall of the second arc-extinguishing cylinder and the inner wall of the third arc-extinguishing cylinder are respectively connected to one end of the corresponding horizontal support member 26. The other end of each horizontal support member 26 is connected to the outer wall of the insulating load-bearing column of the insulator 1 through the clamp 27. The clamp 27 is fastened to the outer wall of the insulating load-bearing column of the insulator to support its arc-extinguishing cylinder. The first arc-extinguishing cylinder 2, the second arc-extinguishing cylinder 3, and the third arc-extinguishing cylinder 11 all have the same structure. They are filled with arc-extinguishing fluid and are all semi-circular arc-shaped cylindrical structures. The ends of each cylinder are provided with a first electrode 20 and a second electrode 22. The first electrode 20 and the second electrode 22 are connected at both ends of the first arc-extinguishing cylinder 2. The first electrode 20 on the first arc-extinguishing cylinder 2 is connected to the upper metal connecting post 4 at the upper end of the insulator 1 through the upper arc-initiating electrode 21, providing a channel for the arc to enter the first arc-extinguishing cylinder 2. For low-intensity lightning arcs, the arc flows from the upper metal connecting post 4 at the upper end of the insulator 1 to the upper arc-initiating electrode 21, the first bend 24, and the first electrode 20, and finally enters the first arc-extinguishing cylinder 2 to generate a liquid-electric effect, thereby extinguishing the arc.

[0044] For high-intensity lightning arcs: the arc flows from the upper metal connecting post 4 at the upper end of the insulator 1 through the upper arc-initiating electrode 21, the first bend 24, and the first electrode 20 into the first arc-extinguishing cylinder 2 (upper arc-extinguishing cylinder), achieving initial arc intensity reduction. However, residual arcs may still exist. The residual arcs flow from the second electrode 22 and the second bend 25 at one end of the first arc-extinguishing cylinder 2 to the first bend 24 and the first electrode 20 at one end of the third arc-extinguishing cylinder 11, and finally flow into the third arc-extinguishing cylinder 11 to achieve arc intensity suppression. Finally, after suppression and attenuation by multiple layers of arc-extinguishing cylinders, the high-intensity lightning arc is extinguished.

[0045] Example 5, as Figure 7 , Figure 8 and Figure 9To ensure that the second electrode 22 and the second bend 25 in the arc-extinguishing cylinder on the upper layer of insulating skirt 6 are aligned with the first electrode 20 and the first bend 24 in the arc-extinguishing cylinder on the lower layer of insulating skirt 6, the first electrode 20 and the first bend 24 are connected by threads and screw holes, and the second electrode 22 and the second bend 25 are connected by threads and screw holes. By rotating the angle of the first bend 24 and the second bend 25 between the upper and lower layers in the vertical direction, the bend electrodes on each arc-extinguishing cylinder are arranged in a gap on the same vertical line, which can completely divert the arc to the next arc-extinguishing cylinder for arc extinguishing.

[0046] This utility model features a load-bearing module (insulator 1) and a lightning protection module (first arc-extinguishing cylinder 2, second arc-extinguishing cylinder 3, and third arc-extinguishing cylinder 11) that are separated from each other and function independently. The load-bearing module (insulator 1) provides load-bearing and insulation, while the lightning protection module or arc-extinguishing device (first arc-extinguishing cylinder 2, second arc-extinguishing cylinder 3, and third arc-extinguishing cylinder 11) provides arc-extinguishing. Even if the arc-extinguishing device is damaged by lightning, the overall structure only loses its arc-extinguishing function, while the load-bearing module (insulator 1) retains its load-bearing and insulation functions, preventing the main body from falling off.

[0047] Combination Figure 1 and Figure 2 The arc extinguishing process of this utility model, which utilizes a hydraulic-electric effect arc extinguishing module separated from the insulator support rod, is as follows: The arc is introduced from the upper metal connecting post 4 at the upper end of the insulator 1 into the first arc extinguishing cylinder 2 set on the insulating skirt 6 at the upper end of the insulator 1 for initial hydraulic-electric effect arc extinguishing, achieving initial attenuation of the arc intensity; then the arc flows out from the first arc extinguishing cylinder 2, and the arc breaks down through the air gaps set at equal intervals between the insulating skirts 6 step by step, undergoing downward flashover and multiple attenuations, and finally the arc is conducted to the second arc extinguishing cylinder 3 on the outer side of the lower end of the insulator 1 for secondary hydraulic-electric effect arc extinguishing, and the residual arc flows out from the outer side of the lower end of the insulator 1. The arc flows out from the second arc-extinguishing cylinder 3 and is guided through the second electrode 22 to the lower metal connecting post 5 at the lower end of the insulator 1, thereby eliminating the residual arc at the lowest end of the insulator 1. For this purpose, after multiple flashovers, the arc is conducted through successive flashovers and multiple attenuations before finally flowing into the second arc-extinguishing cylinder 3 on the outer side of the lower end of the insulator 1, where it is extinguished again by the electrohydraulic effect, thus completely extinguishing the arc. The residual arc, after being flashed downwards and attenuated multiple times, flows out from the second arc-extinguishing cylinder 3 on the outer side of the lowest end of the insulator 1 and can then be guided through the second electrode 22 to the lower metal connecting post 5 at the lower end of the insulator 1 and flow into the ground, thereby eliminating the residual arc at the lowest end of the insulator 1.

[0048] In the embodiments of this utility model, such as Figures 3 to 8As shown, when the electric arc breaks down through the air gaps between the equally spaced insulating skirts 6 in stages, the air gaps between adjacent insulating skirts 6 are conducted through the upper positioning electrode 9 and the lower positioning electrode 10 located on the same vertical line on each insulating skirt 6, or through the third arc-extinguishing cylinder 11 located on the same vertical line on each insulating skirt 6 for staged liquid-electric arc extinguishing and arc conduction. The arc is then extinguished and conducted to the second arc-extinguishing cylinder 3 on the outer side of the lower end of the insulator 1 for liquid-electric arc extinguishing again. After staged flashover and staged attenuation, the arc intensity is suppressed, and the high-intensity lightning arc is extinguished. The load-bearing module (insulator 1) and the lightning protection module (first arc-extinguishing cylinder 2, second arc-extinguishing cylinder 3, and third arc-extinguishing cylinder 11) are separated and function independently. The load-bearing module (insulator 1) provides load-bearing and insulation. During the arc-extinguishing process, the load-bearing module (insulator 1) and the arc-extinguishing device (first arc-extinguishing cylinder 2, second arc-extinguishing cylinder 3, and third arc-extinguishing cylinder 11) work together to extinguish the arc separately. Even if the arc-extinguishing device is damaged by lightning, the overall structure only loses its arc-extinguishing function, while the load-bearing module (insulator 1) retains its load-bearing and insulation functions, and there will be no accident of the main body falling down.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An insulator structure in which the electrohydraulic arc extinguishing module is separated from the insulator support rod, characterized in that: The insulator structure includes an insulator and a first arc-extinguishing cylinder and a second arc-extinguishing cylinder respectively disposed on the outer sides of the upper and lower ends of the insulator. An upper metal connecting column is vertically connected upward at the upper end of the insulator, and a lower metal connecting column is vertically connected downward at the lower end of the insulator. A first electrode at one end of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column through an upper arc-starting electrode, and a second electrode at the other end of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column through a lower arc-starting electrode. Multiple insulating skirts are provided at equal intervals on the outer wall between the upper and lower ends of the insulator.

2. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 1, characterized in that: The first arc-extinguishing cylinder is disposed on the uppermost insulating skirt edge of the insulator or on the outside of the insulating skirt edge, and the second arc-extinguishing cylinder is disposed on the lowermost insulating skirt edge of the insulator or on the outside of the insulating skirt edge.

3. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 2, characterized in that: The first arc-extinguishing cylinder is located on the outer side of the uppermost insulating skirt of the insulator, and the second arc-extinguishing cylinder is located on the outer side of the lowermost insulating skirt of the insulator. An upper circular ring is fixed to the lightning electrode on the outer periphery of the insulating load-bearing column below the insulating skirt at the top of the insulator. The first electrode at one end of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column at the top of the insulator through the upper arc-starting electrode. The second electrode at the other end of the first arc-extinguishing cylinder is connected to the upper circular ring to the lightning electrode below the insulating skirt at the top of the insulator through the lower arc-starting electrode. A lower circular ring is fixed to the outer periphery of the insulating load-bearing column above the insulating skirt at the bottom of the insulator. The first electrode at one end of the second arc-extinguishing cylinder is connected to the lower circular ring to the lightning electrode above the insulating skirt at the bottom of the insulator via an upper arc-starting electrode. The second electrode at the other end of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column at the bottom of the insulator via a lower arc-starting electrode.

4. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 2, characterized in that: The first arc-extinguishing cylinder is disposed on the edge of the uppermost insulating skirt of the insulator, and the second arc-extinguishing cylinder is disposed on the edge of the lowermost insulating skirt of the insulator, and the first arc-extinguishing cylinder and the second arc-extinguishing cylinder are located on the same vertical line.

5. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 4, characterized in that: On the upper and lower surfaces of each insulating skirt edge between the uppermost and lowermost insulating skirt edges of the insulator, symmetrical upper and lower positioning electrodes are respectively provided. The first and second electrodes of the first arc-extinguishing cylinder and the first and second electrodes of the second arc-extinguishing cylinder are all on the same vertical line as the upper and lower positioning electrodes.

6. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 4, characterized in that: A third arc-extinguishing cylinder is suspended on the outer side of the edge of each insulating skirt between the uppermost and lowermost insulating skirts of the insulator. The first electrode of the third arc-extinguishing cylinder is connected to the edge of the insulating skirt, and the second electrode of the third arc-extinguishing cylinder is suspended. The first and second electrodes of the third arc-extinguishing cylinder, the first arc-extinguishing cylinder, and the second arc-extinguishing cylinder are all arranged in the same straight line.

7. The insulator structure according to claim 4, wherein the electrohydraulic arc extinguishing module is separated from the insulator support rod, is characterized in that: The first arc-extinguishing cylinder is arranged around the edge of the uppermost insulating skirt of the insulator, the second arc-extinguishing cylinder is arranged around the edge of the lowermost insulating skirt of the insulator, and a third arc-extinguishing cylinder is arranged on the edge of each insulating skirt between the uppermost and lowermost insulating skirts of the insulator.

8. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 7, characterized in that: The first, second, and third arc-extinguishing cylinders are respectively arranged in an arc shape around the outer side, upper surface, or lower surface of the edge of the insulating skirt. The first and third arc-extinguishing cylinders, as well as the second and third arc-extinguishing cylinders, are located on opposite sides of adjacent insulating skirt edges. The first electrode of the first, second, and third arc-extinguishing cylinders has a first bend that bends vertically upward, and the second electrode of the first, second, and third arc-extinguishing cylinders has a second bend that bends vertically downward. Furthermore, the second bending portion of the second electrode of the first arc-extinguishing cylinder that bends vertically downwards and the first bending portion of the first electrode of the lower third arc-extinguishing cylinder that bends vertically upwards are arranged with a gap on the same vertical line. The first bending portion of the first electrode of the second arc-extinguishing cylinder that bends vertically upwards and the second bending portion of the second electrode of the upper third arc-extinguishing cylinder that bends vertically downwards are arranged with a gap on the same vertical line. In the two adjacent third arc-extinguishing cylinders, the second bending portion of the second electrode end of the upper third arc-extinguishing cylinder that bends vertically downwards and the first bending portion of the first electrode end of the lower third arc-extinguishing cylinder that bends vertically upwards are arranged with a gap on the same vertical line. The first electrode of the first arc-extinguishing cylinder is connected to the outer wall of the upper metal connecting column through the first bend and the upper arc-starting electrode, and the second electrode of the second arc-extinguishing cylinder is connected to the outer wall of the lower metal connecting column through the second bend and the lower arc-starting electrode.

9. The insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 8, characterized in that: The first, second, and third arc-extinguishing cylinders are arc-shaped cylindrical structures. They are arranged in an arc shape on the outer wall of the upper or lower surface of the corresponding insulating skirt. The first electrode is connected to the first bent portion by threads and screw holes, and the second electrode is connected to the second bent portion by threads and screw holes.

10. An insulator structure with a hydraulic-electric effect arc extinguishing module separated from the insulator support rod according to claim 8, characterized in that: The first, second, and third arc-extinguishing cylinders are semi-circular cylindrical structures. The inner walls of the first, second, and third arc-extinguishing cylinders are connected to the outer wall of the insulating load-bearing column of the insulator via horizontal support members. The ends of the horizontal support members are provided with clamps. The inner walls of the first, second, and third arc-extinguishing cylinders are connected to one end of the corresponding horizontal support member. The other end of each horizontal support member is connected to the outer wall of the insulating load-bearing column of the insulator via clamps.

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