High-voltage lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, in particular to the technical field of high-voltage lightning arresters. Comprising a base used for fixing and installing a high-voltage lightning arrester; the first lightning protection body is mounted on the base; the third lightning protection body is installed on the first lightning protection body, and the first lightning protection body and the third lightning protection body are in socket connection and are fixed through a flange; the grading ring is mounted at the top of the third lightning protection body; wherein the first lightning protection body and the third lightning protection body are provided with a connection clamping sleeve at the socket connection part. The lightning arrester has the beneficial effects that the whole structure adopts a flexible design, the base and the lightning arrester body can bear certain transverse stress in connection, and meanwhile, the connecting clamping sleeve is additionally arranged at the connecting part, so that poor conduction caused by unstable contact in the vibration process of the lightning arrester can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to the technical field of high-voltage lightning arresters. Background Art

[0002] High-voltage surge arresters (HVSAs) are electrical devices used to protect electrical equipment from high transient overvoltages caused by lightning strikes and to limit the duration and amplitude of the freewheeling current. In power systems, HVSAs play a vital role, protecting power systems and communications equipment from transient overvoltages such as lightning. Their primary function is to divert dangerously high voltages to the ground via a grounding wire, thereby protecting power and communications lines and their equipment.

[0003] In actual use, multiple lightning arresters are combined to improve protection performance, increase current capacity, adapt to different voltage levels, and more effectively protect power equipment and transmission lines from overvoltage damage. When lightning arresters are used in combination, due to their rigid structure, typically made of ceramic, they can easily break when subjected to vibrations, such as earthquakes and hurricanes. This can cause the arresters to malfunction, potentially leading to damage to power communication equipment caused by excessive surge voltages generated by lightning strikes. Utility Model Content

[0004] The purpose of the present utility model is to provide a high voltage lightning arrester to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a high-voltage lightning arrester, comprising: a base for fixing and installing the high-voltage lightning arrester; a first lightning arrester installed on the base; a third lightning arrester installed on the first lightning arrester, the first lightning arrester and the third lightning arrester being connected by a socket connection and fixed by a flange; and a pressure-equalizing ring installed on the top of the third lightning arrester; wherein the first lightning arrester and the third lightning arrester are provided with a connecting sleeve at the socket connection portion.

[0007] According to one embodiment of the present utility model, flanges are respectively provided at both ends of the first lightning arrester and the third lightning arrester; an insertion end is provided at the bottom of the third lightning arrester; a socket is provided at the top of the first lightning arrester; the connecting ferrule is an annular ferrule, the connecting ferrule is installed in the socket, and the insertion end is inserted into the inner cylinder of the connecting ferrule.

[0008] According to one embodiment of the present utility model, it also includes a second lightning arrester, which is installed between the first lightning arrester and the third lightning arrester; flanges are respectively provided at both ends of the second lightning arrester; a socket is provided at the top of the second lightning arrester; an insertion end is provided at the bottom of the second lightning arrester; the insertion end at the bottom of the third lightning arrester is installed with the connecting sleeve and inserted into the socket at the top of the second lightning arrester, and the insertion end at the bottom of the second lightning arrester is installed with the connecting sleeve and inserted into the socket at the top of the first lightning arrester.

[0009] According to one embodiment of the present utility model, there are multiple second lightning arresters, and the multiple second lightning arresters are connected end to end and then installed between the first lightning arrester and the third lightning arrester; between two adjacent second lightning arresters, the insertion end of the bottom of the upper second lightning arrester is installed with a connecting sleeve and then inserted into the socket on the top of the lower second lightning arrester.

[0010] According to one embodiment of the present invention, the insertion end is a tapered structure, and the end diameter is smaller than the root diameter; the inner cylinder of the connecting sleeve is a tapered inner cylinder, and its taper is the same as that of the insertion end.

[0011] According to one embodiment of the present invention, the material of the connecting sleeve is expanded metal.

[0012] According to one embodiment of the present invention, it further includes a bolt, a nut and a spring. The flange is provided with a bolt hole. The spring is sleeved on the bolt. The bolt passes through two adjacent flanges and is connected to the nut.

[0013] According to one embodiment of the present utility model, the base is an elastic base, the center of which protrudes upward to form a mounting plane, the bottom flange of the first lightning arrester is installed on the mounting plane, and the bottom of the base has three fixed feet, which are connected to the mounting plane in an arc-shaped transition.

[0014] The utility model is beneficial in that the entire structure adopts a flexible design, and the base and the lightning arrester connection can withstand a certain lateral force. At the same time, a connecting sleeve is added at the connection to prevent poor conductivity caused by unstable contact during the vibration of the lightning arrester.

[0015] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a high-voltage lightning arrester of the utility model;

[0017] Figure 2 yes Figure 1 A cross-sectional view of a high-voltage lightning arrester;

[0018] Figure 3 yes Figure 2 A partial cross-sectional view of

[0019] Figure 4 is a cross-sectional view of the third lightning arrester;

[0020] Figure 5 is a cross-sectional view of the second lightning arrester;

[0021] Figure 6 is a cross-sectional view of the first lightning arrester;

[0022] Figure 7 It is a cross-sectional view of the link ferrule.

[0023] List of reference numerals:

[0024] Base 1, first lightning arrester 2, second lightning arrester 3, third lightning arrester 4, equalizing ring 5, connecting sleeve 6, bolt 7, nut 8, spring 9, lightning arrester element 001, flange 002, insertion end 003, socket 004, inner tube 61. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0026] A high-voltage lightning arrester comprises: a base 1 for fixing and installing the high-voltage lightning arrester; a first lightning arrester 2 mounted on the base 1; a third lightning arrester 4 mounted on the first lightning arrester 2, the first lightning arrester 2 and the third lightning arrester 4 being connected by a socket connection and fixed by a flange; a grading ring 5 mounted on the top of the third lightning arrester 4; wherein, the first lightning arrester 2 and the third lightning arrester 4 are provided with a connecting sleeve 6 at the socket connection portion.

[0027] Specifically, flanges 002 are respectively provided at both ends of the first lightning arrester 2 and the third lightning arrester 4; an insertion end 003 is provided at the bottom of the third lightning arrester 4; a socket 004 is provided at the top of the first lightning arrester 2; the connecting ferrule 6 is an annular ferrule, the connecting ferrule 6 is installed in the socket 004, and the insertion end 003 is inserted into the inner cylinder 61 of the connecting ferrule 6.

[0028] Most existing technologies use flange connections, and when the arrester is subjected to lateral forces, it is mainly stabilized by the flange. Compared with the existing technology, the socket structure design adopted in this application is more stable for the structure of the combined arrester.

[0029] In the prior art, a lightning arrester generally consists of an arrester element 001 and connecting flanges 002 at both ends. The flanges 002 are generally made of metal, and the shell of the arrester element 001 is generally made of ceramic. Due to the poor toughness of ceramic, it is more likely to break when subjected to lateral force.

[0030] In the present application, the flange connection between the first lightning arrester 2 and the third lightning arrester 4 is fixed with a bolt 7 and a nut 8. A spring 9 is provided between the bolt 7 and the adjacent flange 002. The flange 002 is provided with a bolt hole. The spring 9 is sleeved on the bolt 7. The bolt 7 passes through two adjacent flanges 002 and is connected to the nut 8. When subjected to a lateral force, the spring 9 is compressed and acts as a buffer to prevent the lightning arrester element 001 from breaking. At the same time, a corresponding buffer design is also added to the socket structure. Specifically, the material of the connecting sleeve 6 in the present application is ductile metal. When subjected to a lateral force, the connecting sleeve 6 is squeezed and deformed.

[0031] In order to facilitate installation and ensure good electrical contact, the insertion end 003 is a conical structure, and its end diameter is smaller than the root diameter; the inner cylinder 61 of the connecting sleeve 6 is a conical inner cylinder, and its taper is the same as that of the insertion end 003.

[0032] Furthermore, in order to prevent the lightning arrester element 001 of the first lightning arrester 2 from breaking and being damaged, the base 1 is designed as an elastic base, the center of which protrudes upward to form a mounting plane, and the bottom flange 002 of the first lightning arrester 2 is installed on the mounting plane. The bottom of the base 1 has three fixed feet, and the fixed feet are connected to the mounting plane in an arc-shaped transition. Example 2

[0033] In addition to the contents of the previous embodiment, this embodiment also includes a second lightning arrester 3, which is installed between the first lightning arrester 2 and the third lightning arrester 4; flanges 002 are respectively provided at both ends of the second lightning arrester 3; a socket 004 is provided at the top of the second lightning arrester 3; an insertion end 003 is provided at the bottom of the second lightning arrester 3; the insertion end 003 at the bottom of the third lightning arrester 4 is installed with the connecting sleeve 6 and inserted into the socket 004 at the top of the second lightning arrester 3, and the insertion end 003 at the bottom of the second lightning arrester 3 is installed with the connecting sleeve 6 and inserted into the socket 004 at the top of the first lightning arrester 2. Example 3

[0034] In addition to the contents of the previous embodiment, this embodiment includes multiple second lightning arresters 3, which are connected end to end and then installed between the first lightning arrester 2 and the third lightning arrester 4; between two adjacent second lightning arresters 3, the insertion end 003 at the bottom of the upper second lightning arrester 3 is installed with the connecting sleeve 6 and then inserted into the socket 004 at the top of the lower second lightning arrester 3.

[0035] The utility model is beneficial in that the entire structure adopts a flexible design, and the base and the lightning arrester connection can withstand a certain lateral force. At the same time, a connecting sleeve is added at the connection to prevent poor conductivity caused by unstable contact during the vibration of the lightning arrester.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high voltage lightning arrester, characterized in that: include: A base (1) for fixing and installing the high-voltage lightning arrester; A first lightning arrester (2) is mounted on the base (1); A third lightning arrester (4) is mounted on the first lightning arrester (2), wherein the first lightning arrester (2) and the third lightning arrester (4) are connected by a socket joint and fixed by a flange; A voltage-equalizing ring (5) is installed on the top of the third lightning arrester (4); Wherein, the first lightning arrester (2) and the third lightning arrester (4) are provided with connecting sleeves (6) at the socket connection parts.

2. A high voltage lightning arrester according to claim 1, characterized in that: Flanges (002) are respectively provided at both ends of the first lightning arrester (2) and the third lightning arrester (4); The bottom of the third lightning arrester (4) is provided with an insertion end (003); A socket (004) is provided on the top of the first lightning arrester (2); The connecting sleeve (6) is an annular sleeve, the connecting sleeve (6) is installed in the socket (004), and the insertion end (003) is inserted into the inner tube (61) of the connecting sleeve (6).

3. A high voltage lightning arrester according to claim 2, characterized in that: It also includes a second lightning arrester (3), which is installed between the first lightning arrester (2) and the third lightning arrester (4); Flanges (002) are respectively provided at both ends of the second lightning arrester (3); A socket (004) is provided on the top of the second lightning arrester (3); The bottom of the second lightning arrester (3) is provided with an insertion end (003); The insertion end (003) at the bottom of the third lightning arrester (4) is installed with the connecting sleeve (6) and then inserted into the socket (004) at the top of the second lightning arrester (3); and the insertion end (003) at the bottom of the second lightning arrester (3) is installed with the connecting sleeve (6) and then inserted into the socket (004) at the top of the first lightning arrester (2).

4. A high voltage lightning arrester according to claim 3, characterized in that: There are a plurality of the second lightning arresters (3), and the plurality of the second lightning arresters (3) are connected end to end and then installed between the first lightning arrester (2) and the third lightning arrester (4); Between two adjacent second lightning arresters (3), the insertion end (003) at the bottom of the upper second lightning arrester (3) is installed with a connecting sleeve (6) and then inserted into the socket (004) at the top of the lower second lightning arrester (3).

5. A high voltage lightning arrester according to any one of claims 2 to 4, characterized in that: The insertion end (003) is a tapered structure, and the diameter of the end portion is smaller than the diameter of the root portion; The inner cylinder (61) of the connecting sleeve (6) is a tapered inner cylinder, and its taper is the same as that of the insertion end (003).

6. A high voltage lightning arrester according to claim 5, characterized in that: The material of the connecting sleeve (6) is ductile metal.

7. A high voltage lightning arrester according to claim 6, characterized in that: It also includes a bolt (7), a nut (8) and a spring (9); a bolt hole is provided on the flange (002); the spring (9) is sleeved on the bolt (7); and the bolt (7) passes through two adjacent flanges (002) and is connected to the nut (8).

8. A high voltage lightning arrester according to claim 7, characterized in that: The base (1) is an elastic base, the center of which protrudes upward to form a mounting plane, and the bottom flange (002) of the first lightning arrester (2) is mounted on the mounting plane. The base (1) has three fixing feet at the bottom, and the fixing feet are connected to the installation plane in an arc-shaped transition.

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