A surge arrester that is easy to disassemble

Abstract

This utility model relates to a surge arrester that is easy to disassemble, comprising several surge arrester units, with adjacent surge arrester units detachably connected via a threaded structure. Each surge arrester unit includes: a connecting cylinder with a silicone rubber shed on its outer side; a nonlinear resistor element detachably installed inside the connecting cylinder; the uppermost and lowermost surge arrester units are respectively detachably connected to an upper connecting seat and a lower connecting seat; a mating part is integrally formed at the lower end of the connecting cylinder, and the mating part has external threads on its outer side; the inner walls of adjacent connecting cylinders have internal threads adapted to the external threads, achieving detachable connection through thread engagement. This easily disassembled surge arrester, due to its detachable structural design, allows for replacement of only the damaged component or the corresponding surge arrester unit when components such as the silicone rubber shed or the nonlinear resistor element are damaged, without replacing the entire surge arrester, significantly reducing maintenance costs and material waste.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, specifically to a surge arrester that is easy to disassemble. Background Technology

[0002] In power systems, zinc oxide surge arresters play a crucial role as key devices ensuring the safe operation of electrical equipment. Traditional zinc oxide surge arresters are generally designed as a single, non-separable structure. During long-term operation, the silicone rubber skirts on the outer surface of the surge arrester are directly exposed to the natural environment, making them highly susceptible to ultraviolet radiation, acid rain corrosion, dirt accumulation, and mechanical impacts, leading to aging and damage.

[0003] At the same time, the internal nonlinear resistors may also deteriorate or even be damaged due to overvoltage surges and long-term current action in the power system. Once the silicone rubber skirts or internal nonlinear resistors of the surge arrester are damaged, the current practice is to replace the entire surge arrester based on its integral structure, which leads to increased costs and waste of materials. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a surge arrester that is easy to disassemble, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surge arrester that is easy to disassemble, comprising a plurality of surge arrester units, wherein two adjacent surge arrester units are detachably connected by a threaded structure;

[0006] Each of the surge arrester units includes:

[0007] The connecting cylinder has a silicone rubber umbrella skirt on its outer side;

[0008] A nonlinear resistor element that can be detachably installed inside the connecting cylinder;

[0009] The uppermost and lowermost surge arrester units are detachably connected to an upper connecting seat and a lower connecting seat, respectively.

[0010] Furthermore, the lower end of the connecting cylinder is integrally formed with a mating part, and the outer side of the mating part is provided with external threads;

[0011] The inner wall of the adjacent connecting cylinder is provided with an internal thread that matches the external thread, and a detachable connection is achieved by thread engagement.

[0012] Furthermore, the lower connecting seat has a threaded hole inside, and is threadedly connected to the mating part of the lowermost surge arrester unit.

[0013] Furthermore, the bottom of the upper connecting seat is provided with a docking cylinder, the outer circumferential surface of which is provided with an external thread, and is adapted to be connected with the internal thread of the connecting cylinder of the uppermost surge arrester unit.

[0014] Furthermore, the bottom of the connecting seat on the upper side is also provided with a compression spring and a compression plate;

[0015] One end of the compression spring is fixed to the connecting seat, and the other end is connected to the pressure plate. The pressure plate presses against the upper surface of the uppermost nonlinear resistor.

[0016] Furthermore, at least one of the silicone rubber umbrella skirts has two rotating members on its outer side, the rotating members having a regular hexagonal cross-section for tool clamping and rotation.

[0017] Furthermore, the rotating component is made of rigid plastic material.

[0018] Furthermore, the inner wall of the connecting cylinder is provided with at least one rubber ring, and an annular groove is provided at the corresponding position of the nonlinear resistor sheet. The rubber ring is embedded in the groove to achieve sealing and fixation.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] 1. This easily detachable surge arrester features a detachable structural design. When components such as the silicone rubber skirt or nonlinear resistor sheet are damaged, only the damaged component or the corresponding surge arrester unit needs to be replaced, without replacing the entire surge arrester. This greatly reduces maintenance costs and material waste.

[0021] 2. The easily disassembled surge arrester, with its threaded connections between components and rotating parts, makes installation and disassembly easier and faster. Operators can easily connect and disassemble the components with the help of tools, improving work efficiency, reducing power outage time due to maintenance, and ensuring the continuous and stable operation of the power system. Attached Figure Description

[0022] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the disassembled structure of this utility model.

[0025] In the diagram: 1. Surge arrester unit; 101. Connecting cylinder; 102. Silicone rubber shed; 103. Nonlinear resistor; 104. Connecting part; 105. Rotating part; 106. Rubber ring; 2. Connecting seat; 201. Connecting cylinder; 202. Downward pressure spring; 203. Downward pressure plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3 In this embodiment, a surge arrester that is easy to disassemble is provided, which enables the surge arrester to be detachably connected, making it easy to disassemble and replace one of the surge arrester units 1 individually.

[0028] Specifically, it includes several surge arrester units 1, and two adjacent surge arrester units 1 are detachably connected by a threaded structure;

[0029] Each surge arrester unit 1 includes: a connecting cylinder 101 with a silicone rubber shed 102 on its outer side; a nonlinear resistor 103 detachably installed inside the connecting cylinder 101; and an upper connecting seat 2 and a lower connecting seat 2 detachably connected to the uppermost and lowermost surge arrester units 1, respectively.

[0030] In actual installation, the surge arrester is composed of multiple independent surge arrester units 1. Adjacent units are detachably connected by a threaded structure, so that the overall structure can be assembled or disassembled as needed. When the silicone rubber skirt 102 of a surge arrester unit 1 ages or the nonlinear resistor 103 is damaged, the unit can be disassembled and replaced separately without the need for the whole unit to be scrapped.

[0031] Furthermore, by increasing or decreasing the number of surge arrester units, the total length and electrical performance of the surge arrester can be adjusted to meet the needs of power systems with different voltage levels.

[0032] In detail, in order to achieve a detachable connection between two adjacent surge arrester units 1, the lower end of the connecting cylinder 101 in this embodiment is integrally formed with a docking part 104. The outer side of the docking part 104 is provided with an external thread, and the inner wall of the adjacent connecting cylinder 101 is provided with an internal thread that matches the external thread. The detachable connection is achieved by thread engagement.

[0033] Furthermore, at least one silicone rubber umbrella skirt 102 has two rotating parts 105 on its outer side. The rotating parts 105 have a regular hexagonal cross-section and are used for tool clamping and rotation. The rotating parts 105 are made of hard plastic material.

[0034] In actual use, the axial fixing and radial positioning of adjacent surge arrester units 1 are achieved by the cooperation of the external thread of the mating part 104 with the internal thread of the adjacent connecting cylinder 101. Moreover, the regular hexagonal design makes it easy to use tools to clamp and rotate. When installing and disassembling surge arrester units 1, the threaded connection and disassembly between surge arrester units 1 can be achieved more easily by rotating the rotating part 105 with tools, which improves the convenience of operation.

[0035] Furthermore, the lower connecting seat 2 has a threaded hole inside, which is threadedly connected to the docking part 104 of the lowermost surge arrester unit 1. The bottom of the upper connecting seat 2 is provided with a docking cylinder 201, and the outer circumferential surface of the docking cylinder 201 is provided with an external thread, which is adapted to be connected to the internal thread of the connecting cylinder 101 of the uppermost surge arrester unit 1.

[0036] Preferably, in order to ensure the stability of the fit between two adjacent nonlinear resistor sheets 103, the bottom of the upper connecting seat 2 in this embodiment is also provided with a pressure spring 202 and a pressure plate 203; one end of the pressure spring 202 is fixed to the connecting seat 2, and the other end is connected to the pressure plate 203, and the pressure plate 203 presses against the upper surface of the uppermost nonlinear resistor sheet 103.

[0037] In practical application, the lower connecting seat 2 is first threadedly connected to the docking part 104 of the lowest surge arrester unit 1 through its internal threaded hole to fix the bottom of the surge arrester. Then, each surge arrester unit 1 is sequentially screwed together through the threaded structure on the connecting cylinder 101. During the connection process, the rotating part 105 on the silicone rubber umbrella skirt 102 can be used to clamp and rotate, making the installation easier and more convenient. When installing the uppermost surge arrester unit 1, the docking cylinder 201 at the bottom of the upper connecting seat 2 is threadedly connected to the connecting cylinder 101 of the uppermost surge arrester unit 1.

[0038] At the same time, the pressure spring 202 and the pressure plate 203 will exert downward pressure on the uppermost nonlinear resistor 103, so that the two adjacent nonlinear resistors 103 are tightly attached, ensuring that the nonlinear resistor 103 remains stable during operation.

[0039] Furthermore, in order to ensure that the nonlinear resistor 103 is stably installed inside the connecting cylinder 101 and to facilitate the disassembly of the nonlinear resistor 103, the nonlinear resistor 103 in this embodiment is detachably installed inside the connecting cylinder 101. The inner wall of the connecting cylinder 101 is provided with at least one rubber ring 106, and an annular groove is provided at the corresponding position of the nonlinear resistor 103. The rubber ring 106 is embedded in the groove to achieve sealing and fixation.

[0040] In actual use, when installing the nonlinear resistor 103 into the connecting cylinder 101, the rubber ring 106 needs to be placed in advance at the corresponding position on the inner wall of the connecting cylinder 101. When the nonlinear resistor 103 is gradually inserted into the connecting cylinder 101, the annular groove will contact the rubber ring 106. Since the rubber ring 106 is elastic, under the squeezing action of the nonlinear resistor 103, the rubber ring 106 will undergo elastic deformation, be compressed and expand outward. As the nonlinear resistor 103 continues to go deeper, when the rubber ring 106 is aligned with the annular groove, the rubber ring 106 will eventually be completely embedded in the annular groove.

[0041] In addition, the tight contact between the rubber ring 106 and the annular groove also serves as a seal, preventing external dust, moisture, humidity and other impurities from entering the interior of the connecting cylinder 101, thus avoiding these impurities from adversely affecting the performance of the nonlinear resistor 103 and ensuring the stability of the working environment of the nonlinear resistor 103.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surge arrester that is easy to disassemble, characterized in that: It includes several surge arrester units (1), and two adjacent surge arrester units (1) are detachably connected by a threaded structure; Each of the surge arrester units (1) includes: The connecting tube (101) has a silicone rubber umbrella skirt (102) on its outer side; A nonlinear resistor (103) is detachably installed inside the connecting cylinder (101); The uppermost and lowermost surge arrester units (1) are detachably connected to an upper connecting seat (2) and a lower connecting seat (2), respectively.

2. A surge arrester according to claim 1, characterized in that: The lower end of the connecting cylinder (101) is integrally formed with a docking part (104), and the outer side of the docking part (104) is provided with an external thread; The inner wall of the adjacent connecting cylinder (101) is provided with an internal thread that is compatible with the external thread, and a detachable connection is achieved by thread engagement.

3. A surge arrester according to claim 2, characterized in that: The lower connecting seat (2) has a threaded hole inside and is threadedly connected to the docking part (104) of the lowermost surge arrester unit (1).

4. The surge arrester of claim 2, wherein: The bottom of the upper connecting seat (2) is provided with a docking cylinder (201), the outer circumferential surface of the docking cylinder (201) is provided with an external thread, and is adapted to be connected to the internal thread of the connecting cylinder (101) of the uppermost surge arrester unit (1).

5. A surge arrester according to claim 4, characterized in that: The bottom of the upper connecting seat (2) is also provided with a pressure spring (202) and a pressure plate (203); One end of the compression spring (202) is fixed to the connecting seat (2), and the other end is connected to the pressure plate (203). The pressure plate (203) presses against the upper surface of the uppermost nonlinear resistor (103).

6. The surge arrester of claim 1, wherein: At least one of the silicone rubber umbrella skirts (102) has two rotating members (105) on its outer side, the rotating members (105) having a regular hexagonal cross-section for tool clamping and rotation.

7. A surge arrester according to claim 6, characterized in that: The rotating component (105) is made of rigid plastic material.

8. The surge arrester of claim 1, wherein: The inner wall of the connecting cylinder (101) is provided with at least one rubber ring (106), and an annular groove is provided at the corresponding position of the nonlinear resistor (103). The rubber ring (106) is embedded in the groove to achieve sealing and fixation.

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