Lightning arrester test tool

Abstract

The utility model discloses a lightning arrester test tool. The lightning arrester test tool comprises a box body used for installing a lightning arrester. The lightning arrester is stably installed in the box body through the first supporting assembly, the second supporting assembly and the third supporting assembly. The first supporting assembly is arranged in the box body and fixedly connected with the bottom of the lightning arrester to provide stable support for the lightning arrester. The second supporting assembly comprises at least one hoop, and the lightning arrester is fixedly installed on the top wall of the box body through the hoop. The third supporting assembly comprises a plurality of positioning blocks arranged between the lightning arrester and the side wall, and it is guaranteed that the lightning arrester cannot be damaged due to left-right power in the testing process. The multiple supporting structures are used in cooperation, effective supporting and fixing are provided for the lightning arrester, the structural stability of the lightning arrester test tool is improved, and a safe and stable short-circuit test environment is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage electric power equipment testing, in particular to a lightning arrester testing tool. Background Art

[0002] With the rapid development of clean energy such as wind power in my country, the demand for the use of related supporting high-voltage equipment is increasing. Among them, the arrester is a key protective device used to prevent lightning strikes and operating overvoltage from damaging the equipment. Due to the compact structure of the inflatable distribution cabinet and the narrow installation location, the requirements for the short-circuit pressure release structure of the arrester are relatively strict. Not only the shell itself cannot be damaged, but also the adjacent equipment cannot be damaged. At the same time, the higher the voltage level, the higher the short-circuit current, and the greater the energy and destructive capacity of the short-circuit test. In order to allow the product to simulate the actual working state, a tooling is needed to simulate the work site. Most traditional test tools use brackets to simply fix the arrester. The jet force and point force generated at the moment of short circuit are large, which can easily damage the arrester. There are problems such as unstable installation and inability to effectively simulate actual working conditions, which makes it impossible to accurately evaluate the performance of the arrester. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and provide a lightning arrester test fixture with a stable structure, so as to ensure that the lightning arrester can pass the type test under a reasonable environment.

[0004] The utility model provides a lightning arrester test tool, which is characterized by comprising: a box body, wherein the box body is used to install the lightning arrester;

[0005] A first supporting assembly is disposed in the box and fixedly connected to the bottom of the arrester;

[0006] The second supporting assembly includes at least one clamping hoop, which is arranged on the inner side of the top wall of the box body and fixes the arrester on the top wall;

[0007] The third supporting assembly includes a plurality of positioning blocks, one end of each positioning block abuts against the arrester, and the other end of each positioning block abuts against the inner side of the side wall of the box body.

[0008] In one embodiment, the arrester has a core mounting portion at one end close to the first supporting assembly, and an explosion-proof tube is disposed on the outer shell of the core mounting portion, and the explosion-proof tube is fixedly mounted on the first supporting assembly.

[0009] In one embodiment, a plurality of explosion-proof holes are formed on the wall of the explosion-proof cylinder.

[0010] In one embodiment, the first support assembly includes a support plate; at least one strip hole is respectively formed on the left and right side walls of the box body, a plurality of positioning holes corresponding to the strip holes are formed on the two end faces of the support plate facing the strip holes, the first support assembly further includes a fastener passing through the positioning holes and the strip holes, and the fastener fixedly connects the support plate and the side wall.

[0011] In one embodiment, the support plate is arranged parallel to the top wall.

[0012] In one embodiment, the hoop has an arc-shaped structure, an installation hole for fixing the hoop is formed on the top wall, the hoop is arranged around the outside of the lightning arrester, and the lightning arrester is fastened to the inner side of the top wall through the installation hole.

[0013] In one embodiment, the third support assembly includes two positioning blocks, and the two positioning blocks are arranged close to the top wall; one of the positioning blocks is arranged between the lightning arrester and the left side wall, and the other positioning block is arranged between the lightning arrester and the right side wall.

[0014] In one embodiment, a plurality of pressure relief holes are formed on the bottom and side walls of the box body.

[0015] In one embodiment, the side wall has a plurality of reinforcing ribs.

[0016] In one embodiment, the lightning arrester test tooling further includes a fourth support assembly, and the fourth support assembly includes a plurality of insulating columns for supporting the box body.

[0017] The lightning arrester test tooling of the technical solution of the present utility model includes a box body for installing a lightning arrester. The lightning arrester is stably installed in the box body through the first support assembly, the second support assembly and the third support assembly. The first support assembly is arranged in the box body and fixedly connected to the bottom of the lightning arrester to provide stable support for the lightning arrester. The second support assembly includes at least one hoop, and the test tooling fixes and installs the lightning arrester at the top wall of the box body through the hoop. The third support assembly includes a plurality of positioning blocks arranged between the lightning arrester and the side wall to ensure that the lightning arrester will not be damaged due to left and right forces during the test. The multiple support structures are used in cooperation to provide effective support and fixation for the lightning arrester, improve the structural stability of the lightning arrester test tooling, and provide a safe and stable short-circuit test environment. Description of the Drawings

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

[0019] Figure 1 It is the front view of an embodiment of the lightning arrester test tooling of the present utility model;

[0020] Figure 2 It is the schematic perspective view of an embodiment of the lightning arrester test tooling of the present utility model;

[0021] Explanation of the reference numerals in the drawings:

[0022] Label Name Label Name Label Name 1 Cabinet 13 Insulating support column 21 Explosion-proof cylinder 1a Top wall 14 Pressure relief hole 21a Explosion-proof hole 1b Side wall 15 Reinforcing rib 3 Hoop 11 Support plate 16 Angle iron 4 Positioning block 12 Slotted hole 2 Lightning arrester

[0023] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" that appears throughout the text is that it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] With the rapid development of clean energy such as wind power in China, the demand for the use of its related supporting high-voltage equipment is also increasing. Among them, lightning arresters are key protection devices used to prevent lightning strikes and switching overvoltages from damaging equipment. Since the gas-insulated switchgear has a compact structure and a narrow installation location, the requirements for the short-circuit pressure relief structure of the lightning arrester are relatively strict. Not only should its own outer shell not be damaged, but also the adjacent equipment should not be damaged. At the same time, the higher the voltage level, the higher the short-circuit current, and the greater the energy and destructive ability of the short-circuit test. In order to enable the product to simulate the actual working state, a tooling is needed to simulate the working site. Most traditional test toolings simply fix the lightning arrester with brackets. The jet force and point dynamic force generated during the short circuit are relatively large, which is extremely easy to damage the lightning arrester, and there are problems such as unstable installation and inability to effectively simulate the actual working conditions, resulting in the inability to accurately evaluate the performance of the lightning arrester.

[0029] The present utility model proposes a test tooling for a lightning arrester. Please refer to Figures 1 to 2 , the test tooling for the lightning arrester includes: a box body 1, and the box body 1 is used for installing a lightning arrester 2. It also includes: a first support assembly, which is arranged inside the box body 1 and is fixedly connected to the bottom of the lightning arrester 2; a second support assembly, which includes at least one hoop 3, and the hoop 3 is arranged inside the inner side of the top wall 1a of the box body 1 to fixedly install the lightning arrester 2 at the top wall 1a; a third support assembly, which includes a plurality of positioning blocks 4, one end of the positioning block 4 abuts against the lightning arrester 2, and the other end abuts against the inner side of the side wall 1b of the box body 1.

[0030] In this embodiment, the arrester test tooling includes a box body 1. The box body 1 has a top wall 1a and a plurality of side walls 1b. The top wall 1a and the plurality of side walls 1b enclose a containing space for installing an arrester 2. The arrester 2 is composed of a bushing and a core body, and the core body is arranged inside the bushing. Preferably, the bushing is made of silicone rubber material and has the functions of protecting the internal core body and insulating. The side of the top wall 1a and the side walls 1b facing the arrester 2 is the inner end face, and the side away from the arrester 2 is the outer end face. Preferably, the top wall 1a and the side walls 1b are integrally formed and welded with high-strength steel, having good mechanical strength and anti-deformation ability. A plurality of angle irons 16 are arranged at the inner connection of the top wall 1a and the side walls 1b and at the inner connection of the side walls 1b and the bottom of the box body 1. The angle irons 16 further enhance the mechanical strength and durability of the box body 1. It can be understood that the internal size of the box body 1 should be larger than the volume of the arrester 2 to ensure that there is enough space for the arrester 2 to be installed and tested inside the box body 1. Further, the top wall 1a is made of 12-mm steel plate, and the side walls 1b are made of 5-mm steel plate. During the short-circuit test process, a large ejection force will be generated inside the test tooling. This ejection force mainly acts between the top wall 1a and the bottom of the box body 1. By setting the box body 1, this tooling structure can offset the ejection force and prevent surrounding objects from being damaged. The arrester 2 is arranged at a position inside the box body 1 close to the top wall 1a. Preferably, there is no gap between the arrester 2 and the top wall 1a, preventing a large impact force from being generated on the arrester 2 during the short-circuit test due to an excessive gap and avoiding damage to the arrester 2 and the box body 1 during the test. The first support assembly is installed inside the box body 1 and fixedly connected to the bottom end of the arrester 2 for supporting the arrester 2, restricting the position of the arrester 2 between the first support assembly and the top wall 1a, and performing limit in the vertical direction to make the arrester 2 in a reasonable position. The second support assembly includes at least one hoop 3. The hoop 3 is arranged around the outside of the bushing, locking and fixing the arrester 2 to the inner end face of the top wall 1a to ensure that there is no gap between the bushing and the top wall 1a. The third support assembly includes a plurality of positioning blocks 4. The positioning blocks 4 are arranged between the side walls 1b and the bushing of the arrester 2. One end of the positioning block 4 is in close contact with the box body 1, and the other end is in close contact with the arrester 2, ensuring the installation stability of the arrester 2 in the horizontal direction and preventing the arrester 2 from being damaged due to a large left-right dynamic force during the short-circuit test. It can be understood that the positioning blocks 4 can be adjusted in terms of position, quantity, and size according to the different sizes and shapes of the arrester 2. The test tooling can use two or more positioning blocks 4, which are arranged at different positions between the arrester 2 and the side walls 1b to ensure the horizontal stability of the arrester 2.

[0031] An embodiment is proposed by the present utility model. Please refer to Figure 1, one end of the arrester 2 close to the first support assembly has a core mounting portion, and an explosion-proof cylinder 21 is sleeved outside the core mounting portion. The explosion-proof cylinder 21 is fixedly mounted on the first support assembly.

[0032] Specifically, the core mounting portion is provided with a plug hole in the vertical direction. The core is arranged in the vertical direction. One end of the core is inserted into the plug hole, and the other end of the core extends out of the core mounting portion and is fixed to the first support assembly by mounting screws. The bottom end of the explosion-proof cylinder 21 is fixedly connected to the first support assembly. It can be understood that the explosion-proof cylinder 21 is sleeved outside the core and the core mounting portion, and the first support assembly provides a supporting effect on the explosion-proof cylinder 21 and the core. During the short-circuit test of the arrester 2, the arrester 2 may cause the core to spray out of the bushing due to the high voltage inside. The setting of the explosion-proof cylinder 21 can prevent the core from splashing outward after spraying out, reduce the explosion risk, and ensure the safety and stability of the test tooling.

[0033] Further, please refer to Figure 1 , a plurality of explosion-proof holes 21a are formed in the barrel wall of the explosion-proof cylinder 21.

[0034] Specifically, the barrel wall of the explosion-proof cylinder 21 is a mesh hole structure and is provided with a plurality of explosion-proof holes 21a. The explosion-proof holes 21a provide a pressure release channel for the arrester 2 during the short-circuit test. Preferably, the explosion-proof holes 21a can be filled with a flexible colloid to provide a buffering effect for the test tooling, provide a buffering effect when the core sprays out of the explosion-proof cylinder, effectively prevent the core from splashing outward, protect the internal components of the arrester 2, and further improve the explosion-proof performance and safety stability of the arrester 2.

[0035] Further, please refer to Figure 1 and Figure 2 , the first support assembly includes a support plate 11. At least one strip hole 12 is formed in each of the left and right side walls 1b of the box body 1. A plurality of positioning holes are formed in the two side end faces of the support plate 11 facing the strip hole 12 corresponding to the strip hole 12. The first support assembly further includes a fastener passing through the positioning hole and the strip hole 12, and the fastener fixedly connects the support plate 11 and the side wall 1b.

[0036] Specifically, at least one strip-shaped hole 12 is respectively formed in the left and right side walls 1b of the box body 1, and the strip-shaped hole 12 is formed in the vertical direction. Preferably, the strip-shaped holes 12 on the left and right side walls 1b are symmetrically arranged, and a plurality of strip-shaped holes 12 on one side wall 1b are arranged at intervals along the same horizontal position. Positioning holes are formed on the two end faces of the support plate 11 facing the strip-shaped holes 12, and fasteners pass through the corresponding positioning holes and the strip-shaped holes 12 to lock and fix the two end faces of the support plate 11 with the left and right side walls 1b, improving the structural stability of the test tooling and preventing the vibration displacement of the support plate 11 caused by the impact force during the test. Optionally, the fastener can adopt a bolt assembly, a screw or other types of fastening elements. The first support assembly has a plurality of positioning holes corresponding to the plurality of strip-shaped holes 12, and the plurality of positioning holes are arranged at intervals along the arrangement direction of the strip-shaped holes 12 on the two end faces of the support plate 11. Through the arrangement of the strip-shaped holes 12, the positioning blocks and the fasteners, the position adjustment of the support plate 11 in the box body 1 can be realized. The position adjustment of the support plate 11 in the vertical direction can be realized by installing the positioning holes at different heights within the range of the strip-shaped holes 12 through the fasteners, and the position adjustment of the support plate 11 along the arrangement direction of the plurality of strip-shaped holes 12 can be realized by the matching and fixing of the positioning holes and different strip-shaped holes 12, so as to meet the position fixing requirements of arresters 2 of different models in the box body 1 and provide flexibility for the system installation of the test tooling.

[0037] Further, please refer to Figure 1 , the support plate 11 is arranged parallel to the top wall 1a.

[0038] Specifically, the support plate 11 is arranged parallel to the top wall 1a, and the positioning holes and the fasteners are arranged at intervals at the same horizontal position, enhancing the coordination and structural stability of the arrester test tooling, providing stable support for the core body and the explosion-proof cylinder 21 of the arrester 2, and reducing the damage risk caused by uneven load.

[0039] Further, please refer to Figure 1 , the hoop 3 has an arc-shaped structure, and mounting holes for fixing the hoop 3 are provided on the top wall 1a. The hoop 3 is arranged around the outside of the arrester 2, and the arrester 2 is fastened to the inner side of the top wall 1a through the mounting holes.

[0040] It can be understood that the arc structure matches the outer wall of the sleeve of the lightning arrester 2, increasing the contact area between the hoop 3 and the lightning arrester 2. There are multiple mounting holes for fixing the hoop 3 on the top wall 1a, and both ends of the hoop 3 have fixing parts that pass through the mounting holes to fix the hoop 3 at the top wall 1a. Optionally, the fixing parts can be bolts or nut assemblies. The fixing parts fasten the hoop 3 to the top wall 1a, and the hoop 3 is in close contact with the lightning arrester 2, applying a locking force to the lightning arrester 2 to fixedly install the lightning arrester 2 inside the top wall 1a. Through the cooperation and support of the first support assembly and the hoop 3, the lightning arrester 2 is reliably fastened in the vertical direction, with more stable force, avoiding the lightning arrester 2 being in a suspended state, and enhancing the structural stability of the lightning arrester test tooling.

[0041] Further, please refer to Figure 1 , the third support assembly includes two positioning blocks 4. One positioning block 4 is arranged between the lightning arrester 2 and the left side wall 1b of the box body 1, and the other positioning block 4 is arranged between the lightning arrester 2 and the right side wall 1b.

[0042] Specifically, the two positioning blocks 4 are arranged at positions in the box body 1 close to the top wall 1a. The positioning blocks 4 are respectively arranged at the left and right ends of the part of the sleeve of the lightning arrester 2 close to the top wall 1a, providing a fastening force in the left and right directions for the lightning arrester 2, keeping the lightning arrester 2 stable during the test, reducing vibration, avoiding damage to the lightning arrester 2 caused by large left and right dynamic forces, improving the stability of the lightning arrester test tooling, and reducing safety risks caused by the test.

[0043] Further, please refer to Figure 2 , a plurality of pressure release holes 14 are provided in the side wall 1b and the bottom of the box body 1.

[0044] It can be understood that during the short-circuit test of the lightning arrester 2, due to the thermal effect of the arc, high-temperature gas will be generated, and the high-temperature gas will rapidly increase the pressure inside the box body 1. In this embodiment, a plurality of pressure release holes 14 are provided in the side wall 1b and the bottom of the box body 1, and the high-temperature gas can be effectively discharged through the pressure release holes 14, thereby avoiding damage or safety accidents caused by excessive internal pressure in the box body 1.

[0045] Further, please refer to Figure 2 , the side wall 1b has a plurality of reinforcing ribs 15.

[0046] It can be understood that a plurality of reinforcing ribs 15 are arranged at intervals on the side wall 1b of the box body 1. The reinforcing ribs 15 can significantly improve the bending strength and stiffness of the side wall 1b, provide additional support for the box body 1, make the box body 1 not easily deformed or damaged under the state of internal high temperature and high pressure, help to maintain the stability of the lightning arrester test tooling during the test, and avoid potential safety risks.

[0047] Further, please refer toFigure 1 Moreover, the arrester test tooling further includes a fourth support assembly, which includes a plurality of insulating columns 13 for supporting the box body 1.

[0048] Specifically, the insulating columns 13 provide stable mechanical support and electrical isolation for the arrester test tooling, ensuring safety and stability during the test process. The insulating columns 13 are made of high-performance insulating materials, effectively preventing current from passing through and reducing the risk of electric leakage. Preferably, the fourth support assembly includes five 10 kV insulating columns 13, which are respectively located at the four corners and the middle position of the bottom of the box body 1, providing stable support for the box body 1 and at the same time ensuring the insulation of the test tooling from the ground to prevent the tooling from flowing back into the ground.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A lightning arrester test tooling, including a box body (1), the box body (1) is used for installing a lightning arrester (2), and is characterized in that, It further includes: A first support component, which is arranged inside the box body (1) and fixedly connected to the bottom of the lightning arrester (2); A second support component, which includes at least one hoop (3). The hoop (3) is arranged inside the top wall (1a) of the box body (1) to fixedly install the lightning arrester (2) at the top wall (1a); A third support component, which includes a plurality of positioning blocks (4). One end of the positioning block (4) abuts against the lightning arrester (2), and the other end abuts against the inner side of the side wall (1b) of the box body (1).

2. The lightning arrester test tooling according to claim 1, characterized in that, One end of the lightning arrester (2) close to the first support component has a core installation part, and an explosion-proof cylinder (21) is sleeved outside the core installation part. The explosion-proof cylinder (21) is fixedly installed on the first support component.

3. The lightning arrester test tooling according to claim 2, wherein A plurality of explosion-proof holes (21a) are formed in the cylinder wall of the explosion-proof cylinder (21).

4. The lightning arrester test tooling according to claim 1, characterized in that The first support component includes a support plate (11); at least one strip hole (12) is respectively formed in the left and right side walls (1b) of the box body (1). A plurality of positioning holes are formed in the two side end faces of the support plate (11) facing the strip hole (12) corresponding to the strip hole (12). The first support component further includes fasteners passing through the positioning holes and the strip hole (12) to fixedly connect the support plate (11) and the side wall (1b).

5. The lightning arrester test tooling according to claim 4, characterized in that The support plate (11) is arranged parallel to the top wall (1a).

6. The lightning arrester test tooling according to claim 1, characterized in that The hoop (3) has an arc structure. An installation hole for fixing the hoop (3) is formed in the top wall (1a). The hoop (3) is arranged around the outside of the lightning arrester (2) to fasten the lightning arrester (2) inside the top wall (1a) through the installation hole.

7. The lightning arrester test tooling according to claim 1, characterized in that, The third support component includes two positioning blocks (4). The two positioning blocks (4) are arranged close to the top wall (1a); one of the positioning blocks (4) is arranged between the lightning arrester (2) and the left side wall (1b), and the other positioning block (4) is arranged between the lightning arrester (2) and the right side wall (1b).

8. The lightning arrester test tooling according to claim 1, characterized in that A plurality of pressure release holes (14) are formed in the bottom and side wall (1b) of the box body (1).

9. The lightning arrester test tooling according to claim 1, characterized in that, The side wall (1b) has a plurality of reinforcing ribs (15).

10. The arrester test tooling according to claim 1, wherein, It further includes a fourth support component, and the fourth support component includes a plurality of insulating columns (13) for supporting the box body (1).

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