Lightning protection device for current collection circuit

Abstract

The utility model provides a lightning protection device for a current collection circuit, which comprises a cylinder body, a flange and a lightning arrester, the top of the cylinder body is fixedly connected with the flange, the top of the flange is fixedly connected with the lightning arrester, the cylinder body is of a hollow structure, the bottom of the cylinder body is of an open structure, a plurality of through holes are formed in the cylinder wall of the cylinder body, and the through holes are communicated with the flange. And a bulge and a recess are arranged on the outer surface of the cylinder body. The lightning protection device has the advantages that the voltage-sharing effect can ensure that the cylinder body is subjected to the same or similar voltage effect, and the overall voltage resistance of the lightning protection device is improved by uniformly distributing lightning charges. When the lightning impulse occurs, lightning charges can be more effectively led into the ground, a current collection circuit is protected from being damaged, the design of the multiple through holes is beneficial to increasing the air circulation area of the surface of the cylinder body, and therefore heat dissipation is better achieved during lightning impulse or long-time operation. Therefore, the temperature in the cylinder body is reduced, and the stability and the reliability of the cylinder body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection, in particular to a lightning protection device for a collector line. Background Art

[0002] The expansion of power grids has made lightning strikes a major risk to grid stability. Statistics show that in areas of China with high trip rates, lightning strikes account for approximately 40% to 70% of all trips.

[0003] Currently, the main lightning protection measures adopted by the power industry include reducing the grounding resistance of towers, erecting lightning conductors, installing line arresters, increasing the number of insulators, and other measures to strengthen insulation. Although these methods can reduce the probability of lightning strikes to a certain extent, they have limitations.

[0004] In existing line arresters, lightning charges tend to concentrate at points on the arrester and are difficult to be evenly distributed on the arrester, resulting in local charge accumulation and excessive voltage, which in turn causes certain damage to the arrester itself and the collector line. Therefore, a lightning protection device for the collector line is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the present invention is to provide a lightning protection device for a collector line to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0007] To achieve the above-mentioned object, an embodiment of one aspect of the present invention provides a lightning protection device for a collector line, comprising a cylinder, a flange, and a lightning receptor, wherein the top of the cylinder is fixedly connected to the flange, and the top of the flange is fixedly connected to the lightning receptor;

[0008] The cylinder is a hollow structure with an open bottom, and a plurality of through holes are opened on the cylinder wall of the cylinder;

[0009] The outer surface of the cylinder is provided with a convexity and a concaveity, and the bottom of the cylinder is fixedly connected to a bottom cylinder;

[0010] A plurality of contacts are fixedly connected to the bottom tube, and a connecting piece is fixedly connected to the contact point via a connecting piece, and a lightning wire is fixedly connected to the bottom end of the connecting piece.

[0011] Preferably, from any of the above solutions, the cylinder has a top-sealed and bottom-open structure, and is cylindrical.

[0012] Adopting the above technical solution: This device is a lightning protection device for collector lines, which consists of a lightning rod, a flange, a cylinder, a bottom cylinder, a contact, a connecting piece and a lightning conductor from top to bottom.

[0013] Preferably, from any of the above solutions, the flange is welded or riveted to the top of the cylinder, and the top end of the lightning receptor is in a pointed cone shape.

[0014] Adopting the above technical solution: this device is not directly connected to the collector line, but is located above the collector line, and guides lightning to itself through its height and position advantages.

[0015] After lightning strikes the air terminal, the lightning current flows to the grounding device, thus avoiding direct damage to the collector line.

[0016] Preferably, any of the above schemes is that the through holes penetrate the cylinder wall of the cylinder, the through holes are arranged in a plurality of rows, and the through holes in the upper and lower rows are staggered.

[0017] Adopting the above technical solution: the core structure of this device is: cylinder, through-hole, bottom cylinder, contact, connecting piece, and lightning conductor. The core advantage of this device is: after the lightning rod is connected to the lightning, the structure of the lightning current is a hollow cylinder with many through-holes. The through-hole design on the surface of the cylinder helps to distribute the lightning charge more evenly in various parts of the cylinder, thereby avoiding the problem of excessive voltage caused by local charge accumulation. This voltage equalization effect can ensure that the cylinder is subjected to the same or similar voltage. By evenly distributing the lightning charge, the overall voltage resistance of this protective device is improved. When encountering a lightning strike, the lightning charge can be more effectively introduced into the ground to protect the collector line from damage;

[0018] The design of numerous through holes helps to increase the air circulation area on the surface of the cylinder, thereby better dissipating heat during lightning strikes or long-term operation. This helps to reduce the temperature inside the cylinder and improve its stability and reliability;

[0019] Multiple contact points are evenly distributed across the bottom of the cylinder, each connected to the grounding device via a contact and lightning conductor, forming multiple lightning conduction channels. When lightning strikes the arrester, the lightning charge is quickly dispersed and conducted underground through these multiple channels, greatly improving lightning conduction efficiency.

[0020] Preferably, any of the above solutions is that the cylinder body and the bottom cylinder are welded, and the inner and outer surfaces of the joints are flat.

[0021] Preferably, any of the above solutions is that the connecting parts are specifically bolts and nuts, wherein the bolts pass through the joints and the connecting pieces, and the nuts are tightened on the surfaces of the connecting pieces.

[0022] Preferably, in any of the above solutions, the lightning conductor is inserted into the ground.

[0023] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0024] This lightning protection device for the collector line is configured through the coordination of a cylinder, through-holes, a bottom cylinder, contacts, tabs, and lightning conductors. After the lightning receptor receives lightning, the lightning current conducting structure is a hollow cylinder with numerous through-holes. The through-hole design on the surface of the cylinder helps to distribute the lightning charge more evenly across the cylinder, thereby avoiding the problem of excessive voltage caused by local charge accumulation. This voltage balancing effect ensures that the cylinder is subjected to the same or similar voltage. By evenly distributing the lightning charge, the overall voltage resistance of this protection device is improved. When encountering a lightning strike, the lightning charge can be more effectively introduced into the ground, protecting the collector line from damage.

[0025] The design of numerous through holes helps to increase the air circulation area on the surface of the cylinder, thereby better dissipating heat during lightning strikes or long-term operation. This helps to reduce the temperature inside the cylinder and improve its stability and reliability;

[0026] Multiple contact points are evenly distributed across the bottom of the cylinder, each connected to the grounding device via a contact and lightning conductor, forming multiple lightning conduction channels. When lightning strikes the arrester, the lightning charge is quickly dispersed and conducted underground through these multiple channels, greatly improving lightning conduction efficiency.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0030] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle;

[0031] Figure 3 This is a schematic structural diagram of the cylinder of the utility model;

[0032] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0033] In the figure: 1-cylinder, 2-flange, 3-lightning receptor, 4-through hole, 5-bottom tube, 6-contact, 7-connector, 8-connector, 9-lightning conductor. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] like Figure 1-4 As shown, the lightning protection device for the collector line includes a cylinder 1, a flange 2, and a lightning receptor 3. The top of the cylinder 1 is fixedly connected to the flange 2, and the top of the flange 2 is fixedly connected to the lightning receptor 3.

[0037] The cylinder 1 is a hollow structure with an open bottom. A plurality of through holes 4 are provided on the cylinder wall of the cylinder 1.

[0038] The outer surface of the cylinder 1 is provided with a convexity and a concaveity, and the bottom of the cylinder 1 is fixedly connected with a bottom cylinder 5;

[0039] A plurality of contacts 6 are fixedly connected to the bottom tube 5 , and a connecting piece 8 is fixedly connected to the contact 6 through a connecting piece 7 , and a lightning conductor 9 is fixedly connected to the bottom end of the connecting piece 8 .

[0040] Example 1: Cylinder 1 is a cylindrical structure with a sealed top and an open bottom. This device is a lightning protection device for collector lines. From top to bottom, it comprises a lightning receptor 3, flange 2, cylinder 1, bottom cylinder 5, contact 6, contact piece 8, and lightning conductor 9. Flange 2 is welded or riveted to the top of cylinder 1, and the top of lightning receptor 3 is conical.

[0041] Example 2: This device is not directly connected to the collector line, but is located above the collector line, and guides lightning to itself through its height and position advantages.

[0042] After lightning strikes the air receptor 3, the lightning current flows to the grounding device, thus preventing direct damage to the collector circuit. Through holes 4 penetrate the wall of the cylinder 1. Through holes 4 are arranged in several rows, with the upper and lower rows of through holes 4 staggered. The cylinder 1 is welded to the bottom cylinder 5, and the inner and outer surfaces of the contact 6 are flat. The connecting member 7 is specifically a bolt and nut, wherein the bolt passes through the contact 6 and the contact 8, and the nut is tightened on the surface of the contact 8. The lightning conductor 9 is led underground, that is, the lightning conductor 9 is connected to the grounding device.

[0043] The working principle of this utility model is as follows:

[0044] This device is not directly connected to the collector line, but is located above the collector line. It uses its height and position advantages to guide lightning to itself. After the lightning receptor 3 is connected to the lightning, the structure of the lightning current is a hollow cylinder 1 with many through holes 4. The through holes 4 on the surface of the cylinder 1 help to distribute the lightning charge more evenly in various parts of the cylinder 1.

[0045] The lightning current reaches the contacts 6, which are evenly distributed at the bottom of the cylinder. Each contact 6 is connected to the grounding device via a contact 8 and a lightning conductor 9, forming multiple lightning conduction channels. When lightning strikes the arrester, the lightning charge can be quickly dispersed through these multiple channels and conducted underground.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The lightning protection device for the collector line is arranged in coordination with the cylinder 1, through-hole 4, bottom cylinder 5, contact 6, contact piece 8, and lightning conductor 9. After the lightning rod 3 receives the lightning, the structure of the lightning current is a hollow cylinder 1 with numerous through-holes 4. The through-holes 4 on the surface of the cylinder 1 help to distribute the lightning charge more evenly in various parts of the cylinder 1, thereby avoiding the problem of excessive voltage caused by local charge accumulation. This voltage equalization effect can ensure that the cylinder 1 is subjected to the same or similar voltage. By evenly distributing the lightning charge, the overall voltage resistance of the protection device is improved. When encountering a lightning strike, the lightning charge can be more effectively introduced into the ground to protect the collector line from damage.

[0048] The design of numerous through holes 4 helps to increase the air circulation area on the surface of the cylinder 1, thereby better dissipating heat during lightning strikes or long-term operation. This helps to reduce the temperature inside the cylinder 1 and improve its stability and reliability;

[0049] Multiple contacts 6 are evenly distributed at the bottom of the cylinder, each connected to the grounding device via a contact 8 and a lightning conductor, forming multiple lightning conduction channels. When lightning strikes the arrester, the lightning charge can be quickly dispersed and conducted underground through these multiple channels, greatly improving the efficiency of lightning conduction.

Claims

1. A lightning protection device for a collector line, characterized in that: It comprises a cylinder (1), a flange (2), and a lightning receptor (3), wherein the top of the cylinder (1) is fixedly connected to the flange (2), and the top of the flange (2) is fixedly connected to the lightning receptor (3); The cylinder (1) is a hollow structure, the bottom of the cylinder (1) is an open structure, and a plurality of through holes (4) are opened on the cylinder wall of the cylinder (1); The outer surface of the cylinder (1) is provided with a protrusion and a depression, and the bottom of the cylinder (1) is fixedly connected to a bottom cylinder (5); A plurality of contacts (6) are fixedly connected to the bottom tube (5), a connecting piece (8) is fixedly connected to the contact (6) via a connecting piece (7), and a lightning conductor (9) is fixedly connected to the bottom end of the connecting piece (8).

2. A lightning protection device for a collector line according to claim 1, characterized in that: The cylinder (1) is a structure with a sealed top and an open bottom, and the cylinder (1) is cylindrical.

3. A lightning protection device for a collector line according to claim 2, characterized in that: The flange (2) is welded or riveted to the top of the cylinder (1), and the top end of the lightning receptor (3) is in a pointed cone shape.

4. A lightning protection device for a collector line according to claim 3, characterized in that: The through holes (4) penetrate the cylinder wall of the cylinder (1), and the through holes (4) are arranged in a plurality of rows, with the through holes (4) in the upper and lower rows being staggered.

5. A lightning protection device for a collector line according to claim 4, characterized in that: The cylinder (1) and the bottom cylinder (5) are welded, and the inner and outer surfaces of the joint (6) are flat.

6. A lightning protection device for a collector line according to claim 5, characterized in that: The connecting member (7) is specifically a bolt and a nut, wherein the bolt passes through the connection point (6) and the connecting piece (8), and the nut is tightened on the surface of the connecting piece (8).

7. A lightning protection device for a collector line according to claim 6, characterized in that: The lightning conductor (9) is led into the ground.

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