A detachable and fixed lightning arrester

Abstract

The utility model relates to a detachable fixed lightning arrester, relates to lightning arrester technical field, including base and setting on the lightning arrester body of base, the lightning arrester body is installed on the base, and the circular ring array is provided with three groups of anti -tilting subassembly on the base, and is swinged connected on the circumferential surface of lightning arrester body, anti -tilting subassembly includes the telescopic link of hinge joint with base, the spring of setting on telescopic link and the fixed clamp of hinge joint on telescopic link output shaft, three fixed clamps are located in the same plane, and all are fixedly connected on the circumferential surface of lightning arrester body, and the elastic support and righting of lightning arrester body are realized through spring and telescopic link cooperation, improve installation stability, prevent the skew, dump in operation, the utility model can be through the annular symmetry support of multiple elastic righting subassembly to lightning arrester body, realize quick dismounting's while significantly improve installation stability, effectively prevent lightning arrester skew, dump, guarantee equipment operation reliable and safe.

Description

Technical Field

[0001] This application relates to the field of surge arrester technology, and more particularly to a detachable and fixed surge arrester. Background Technology

[0002] A surge arrester is a core protective device installed on power systems, electrical equipment, or buildings to limit lightning overvoltage, switching overvoltage, and other transient overvoltages. Essentially, it is a nonlinear resistive device that provides a discharge path for energy when an overvoltage occurs through the rapid switching of its own resistance characteristics, preventing overvoltage from breaking down equipment insulation or causing equipment damage. It is the first line of defense for the safe operation of electrical systems.

[0003] Currently, Chinese utility model patent application CN222654796U, published on March 21, 2025, discloses a surge arrester fixing structure and surge arrester, including a fixed mounting plate and a surge arrester mounted on the fixed mounting plate. The fixed mounting plate has sliding grooves on both sides of the surge arrester, with adjusting screws installed inside the grooves. A telescopic clamping rod is connected to the adjusting screw via a screw-slider. A clamping bracket for clamping and fixing the surge arrester is fixedly connected to the top of the telescopic clamping rod. A support base is connected to the bottom of the fixed mounting plate via an insulating support column, and a stabilizing pad is connected to the bottom of the support base via a hydraulic lifting rod. This utility model allows the adjusting screw to be rotated by adjusting a knob, causing the clamping bracket to clamp the surge arrester. The clamping brackets are engaged with each other via a snap-fit ​​rod and a snap-fit ​​groove, ensuring a stable clamping of the surge arrester, facilitating assembly and disassembly, and allowing adjustment of the height of surge arresters of different thicknesses and lengths. This effectively suppresses damage caused by surge arrester swaying, thus providing convenience for workers.

[0004] In the related technology of detachable and fixed surge arresters, this patent adopts a quick-installation structure with upper and lower mounting plates and a handwheel for locking. During assembly and operation, problems such as left and right positioning deviation and asymmetrical force may easily occur between the surge arrester body and the mounting plate. Because the upper and lower mounting plates are rigid flat structures, lacking symmetrical guidance and anti-deviation positioning design, uneven clearance between the hardware at both ends of the surge arrester and the mounting plate, or excessive pre-tightening force of the handwheel on one side, will directly cause the surge arrester body to tilt to one side. During long-term operation, factors such as line vibration, wind swaying, and thermal expansion and contraction will further amplify the asymmetrical deviation, causing the surge arrester to gradually deviate from the correct installation position and become significantly skewed. Skewness will cause poor contact of the contacts, increased resistance of the conductive circuit, and aggravated local heating. At the same time, it will damage the insulation spacing and electric field uniformity, reducing the protection performance under lightning impulse. In addition, asymmetrical skewness will also cause unilateral overload of the support structure, leading to deformation of the mounting plate and loosening of fasteners. In severe cases, it may cause the surge arrester to fall off, threatening the safe operation of the line. This structure does not have a symmetrical limit and anti-deviation compensation mechanism, making it difficult to maintain stable alignment during disassembly, assembly, and operation.

[0005] Therefore, it is necessary to propose a detachable and fixed surge arrester to solve the above problems. Utility Model Content

[0006] This application provides a detachable and fixed surge arrester to address the technical problems in related technologies, such as uneven force distribution and asymmetry during assembly due to the lack of symmetrical guidance and anti-deviation positioning. Furthermore, long-term exposure to vibration, wind sway, and thermal expansion and contraction can cause the surge arrester to tilt, leading to poor contact, overheating, abnormal insulation spacing, reduced protective performance, and even loosening of fasteners and equipment detachment, thus affecting operational safety.

[0007] This application provides a detachable and fixed surge arrester, including a base and a surge arrester body disposed on the base. The surge arrester body is mounted on the base, and three sets of anti-tipping components are arranged in a circular array on the base and movably connected to the peripheral side of the surge arrester body. The anti-tipping assembly includes a telescopic rod hinged to the base, a spring sleeved on the telescopic rod, and a fixing clamp hinged to the output shaft of the telescopic rod. The three fixing clamps are located on the same plane and are all fixedly connected to the peripheral side of the surge arrester body. The spring and the telescopic rod work together to achieve elastic support and uprighting of the surge arrester body, improve installation stability, and prevent tilting or tipping during operation.

[0008] The technical solutions described above in this application embodiment have at least the following technical effects: by using multiple sets of elastic straightening components to provide symmetrical ring support for the surge arrester body, the installation stability is significantly improved while enabling rapid disassembly and assembly, effectively preventing the surge arrester from tilting or tipping over, and ensuring reliable and safe operation of the equipment.

[0009] In this embodiment, a bellows is fixedly provided on the peripheral side of the spring.

[0010] This technical solution effectively protects the spring by installing a bellows outside the spring, extends its service life, ensures the stability and reliability of the elastic straightening function, and improves the overall operational safety and stability of the surge arrester.

[0011] In this embodiment, adjacent fixing clamps can be locked to each other.

[0012] This technical solution allows adjacent fixing clamps to lock together, forming an overall clamping structure, which significantly improves positioning accuracy and structural strength, further preventing the surge arrester from tilting or tipping over, and enhancing the overall reliability of the device.

[0013] In this embodiment, the base is provided with mounting holes, and the surge arrester body is mounted on the base through the mounting holes.

[0014] This technical solution enables rapid assembly and positioning of the surge arrester body through the mounting holes on the base, improving installation convenience and structural stability, and ensuring reliable operation of the overall device.

[0015] In this embodiment, a limiting component is provided on the base to limit the axial position of the surge arrester body.

[0016] This technical solution uses a limiting component to achieve axial limiting of the surge arrester body, improving overall assembly accuracy and structural stability, and ensuring safe and reliable operation of the equipment.

[0017] In this embodiment, the limiting component includes an elastic element and a snap-fit ​​element. The elastic element drives the snap-fit ​​element to move, and the snap-fit ​​element engages with the connecting flange at the bottom of the surge arrester body to apply a clamping force to the connecting flange through the elastic force of the elastic element.

[0018] This technical solution enables the flexible drive snap-fit ​​limiter to automatically tighten the flange, achieve reliable axial positioning, improve assembly efficiency and structural stability, and ensure the safe and reliable operation of the surge arrester.

[0019] In this embodiment, the number of limiting components is at least two, and they are spaced apart along the circumferential direction of the mounting hole.

[0020] This technical solution employs at least two circumferentially spaced limiting components to achieve symmetrical and uniform limiting, thereby improving assembly coaxiality and structural stability, and preventing the surge arrester from tilting or loosening.

[0021] In this embodiment, the connecting flange is provided with a limiting groove that engages with the snap-fit ​​component.

[0022] This technical solution achieves reliable locking and positioning through precise cooperation between the limiting groove and the snap-fit ​​component, improving the overall structural stability and ensuring that the surge arrester is securely installed and operates safely.

[0023] Beneficial effects: The mounting holes on the base facilitate quick alignment and installation of the surge arrester body. With at least two sets of circumferentially spaced limiting components, symmetrical and uniform axial compression and positioning of the connecting flange can be achieved. The limiting components adopt the structure of elastic element driven snap-fit, which can automatically apply stable compression force to the connecting flange. With the limiting groove on the flange, precise snap-fit ​​and double constraint are achieved, effectively avoiding axial movement, circumferential rotation and assembly loosening, and improving assembly coaxiality and positioning accuracy. Three sets of anti-tipping components are arranged in a circular array on the base. Through telescopic rods, springs, and fixing clamps, the arrester body receives circumferential elastic support and uprighting. Adjacent clamps can lock together to form a closed-loop clamping structure, further enhancing radial stiffness and symmetry. This fundamentally solves the problems of tilting and tipping caused by left-right asymmetry and uneven force during installation and operation. A corrugated pipe is installed on the outside of the spring, effectively preventing dust, water, and dirt, avoiding spring corrosion and jamming, and ensuring long-term reliable elastic uprighting function. The overall structure allows for convenient assembly and disassembly, precise positioning, and stable support. It can effectively resist the effects of vibration, wind sway, and thermal expansion and contraction, significantly improving the safety and reliability of surge arrester installation and operation, extending service life, and reducing maintenance costs. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of a detachable and fixed surge arrester provided in an embodiment of this application; Figure 2 Explosion-proof diagram of a detachable and fixed surge arrester provided in the embodiments of this application. Figure 1 ; Figure 3 Explosion-proof diagram of a detachable and fixed surge arrester provided in the embodiments of this application. Figure 2 ; The following are the labeling elements in the figure: 1. Base; 2. Surge arrester body; 21. Connecting flange; 22. Mounting hole; 23. Limiting groove; 3. Anti-tipping assembly; 31. Telescopic rod; 32. Spring; 33. Fixing clamp; 34. Corrugated pipe; 4. Limiting assembly; 41. Elastic element; 42. Clip-on component. Detailed Implementation

[0025] In the related technology of detachable and fixed surge arresters, this patent adopts a quick-installation structure with upper and lower mounting plates and a handwheel for locking. During assembly and operation, problems such as left and right positioning deviation and asymmetrical force may easily occur between the surge arrester body and the mounting plate. Because the upper and lower mounting plates are rigid flat structures, lacking symmetrical guidance and anti-deviation positioning design, uneven clearance between the hardware at both ends of the surge arrester and the mounting plate, or excessive pre-tightening force of the handwheel on one side, will directly cause the surge arrester body to tilt to one side. During long-term operation, factors such as line vibration, wind swaying, and thermal expansion and contraction will further amplify the asymmetrical deviation, causing the surge arrester to gradually deviate from the correct installation position and become significantly skewed. Skewness will cause poor contact of the contacts, increased resistance of the conductive circuit, and aggravated local heating. At the same time, it will damage the insulation spacing and electric field uniformity, reducing the protection performance under lightning impulse. In addition, asymmetrical skewness will also cause unilateral overload of the support structure, leading to deformation of the mounting plate and loosening of fasteners. In severe cases, it may cause the surge arrester to fall off, threatening the safe operation of the line. This structure does not have a symmetrical limit and anti-deviation compensation mechanism, making it difficult to maintain stable alignment during disassembly, assembly, and operation.

[0026] Based on this, in order to improve the technical problems existing in related technologies, such as uneven and asymmetrical force on the left and right sides during assembly due to the lack of symmetrical guidance and anti-deviation positioning, and the fact that surge arresters are prone to tilting due to long-term exposure to vibration, wind sway, and thermal expansion and contraction, leading to poor contact, overheating, abnormal insulation spacing, reduced protection performance, and even loosening of fasteners and equipment detachment, affecting operational safety, the embodiments of this application provide the following solutions.

[0027] Please refer to the following: Figures 1 to 3 This application provides a detachable and fixed surge arrester, which includes a base 1 and a surge arrester body 2 disposed on the base 1. The surge arrester body 2 is mounted on the base 1, and three sets of anti-tipping components 3 are arranged in a circular array on the base 1 and are movably connected to the peripheral side of the surge arrester body 2. The anti-tipping assembly 3 includes a telescopic rod 31 hinged to the base 1, a spring 32 sleeved on the telescopic rod 31, and a fixing clamp 33 hinged to the output shaft of the telescopic rod 31. The three fixing clamps 33 are located on the same plane and are all fixedly connected to the periphery of the surge arrester body 2. The spring 32 cooperates with the telescopic rod 31 to achieve elastic support and uprighting of the surge arrester body 2, improve installation stability, and prevent tilting or tipping during operation.

[0028] The detachable and fixed surge arrester provided in this application embodiment has three sets of anti-tipping components 3 arranged in a circular array on the base 1. Each set consists of a hinged telescopic rod 31, a spring 32, and a fixing clamp 33, which can form multi-point elastic support for the periphery of the surge arrester body 2. The spring 32 and the telescopic rod 31 cooperate to provide a continuous elastic uprighting force. The fixing clamp 33 is reliably connected to the surge arrester body 2, and independently realizes the anti-tilting and anti-skewing functions, effectively avoiding the problems of left-right asymmetry and uneven force during installation and operation.

[0029] In this embodiment, a bellows 34 is fixedly provided on the peripheral side of the spring 32.

[0030] With this configuration, the bellows 34 is fixedly installed on the outer periphery of the spring 32, which can directly form a closed protection for the spring 32, isolate the intrusion of external environmental factors such as dust, water vapor, and dirt, prevent the spring 32 from losing its elasticity due to rust or jamming, and ensure that the extension and retraction of the spring 32 is smooth and stable.

[0031] In this embodiment, adjacent fixing clamps 33 can be locked to each other.

[0032] With this configuration, multiple sets of fixing clamps 33 lock together to form a closed-loop clamping structure, which works in conjunction with the three sets of anti-tipping components 3 and the surge arrester body 2 to further improve the overall structural rigidity and symmetry, effectively suppressing tilting and shaking during assembly and operation, and enhancing the overall installation stability.

[0033] In this embodiment, the base 1 is provided with mounting holes 22, and the surge arrester body 2 is mounted on the base 1 through the mounting holes 22.

[0034] With this configuration, the surge arrester body 2 is stably assembled onto the base 1 through the mounting hole 22, forming a complete support system with the three sets of anti-tipping components 3 on the base 1. This ensures that the overall structure is subjected to uniform stress and has reliable positioning, effectively improving assembly accuracy and structural stability, and preventing deviation or loosening during operation.

[0035] In this embodiment, a limiting component 4 is provided on the base 1 to limit the axial position of the surge arrester body 2.

[0036] With this configuration, the base 1 is equipped with a limiting component 4, which can axially limit and constrain the surge arrester body 2, restrict its axial movement and displacement, ensure proper assembly, avoid installation position deviation due to axial loosening, and improve positioning reliability. The limiting component 4 is a limiting boss or limiting slot on the base 1, which cooperates with the bottom of the surge arrester body 2 to achieve axial positioning; or elastic buckles and tightening screws are used to axially limit and lock the surge arrester body 2. The structure is simple, the assembly is convenient, the positioning is reliable and the stability is high.

[0037] In this embodiment, the limiting component 4 includes an elastic element 41 and a snap-fit ​​element 42. The elastic element 41 drives the snap-fit ​​element 42 to move. The snap-fit ​​element 42 engages with the connecting flange 21 at the bottom of the surge arrester body 2, so as to apply a clamping force to the connecting flange 21 through the elastic force of the elastic element 41.

[0038] With this configuration, the limiting component 4 adopts a structure in which the elastic element 41 and the snap-fit ​​element 42 cooperate. The elastic element 41 drives the snap-fit ​​element 42 to snap-fit ​​the bottom connecting flange 21 of the surge arrester body 2 and apply a clamping force. This can achieve automatic axial pre-tightening positioning, avoid flange loosening or movement, ensure reliable snap-fit ​​and lock it without the need for additional tools.

[0039] In this embodiment, the number of limiting components 4 is at least two, and they are spaced apart along the circumferential direction of the mounting hole 22.

[0040] With this configuration, multiple sets of circumferentially spaced limiting components 4 cooperate with the base 1, surge arrester flange, and anti-tipping component 3 to achieve circumferential symmetrical constraint, further improving axial positioning accuracy and structural coaxiality, effectively suppressing offset and skewing caused by vibration and thermal expansion and contraction, and improving overall stability.

[0041] In this embodiment, the connecting flange 21 is provided with a limiting groove 23 that engages with the snap-fit ​​member 42.

[0042] With this configuration, the limiting groove 23, the snap-fit ​​component 42, the elastic component 41, the base 1, and the anti-tipping component 3 form a complete positioning system, further eliminating assembly gaps, improving coaxiality and force uniformity, and effectively preventing the surge arrester from tilting or loosening.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A detachable and fixed surge arrester, comprising a base (1) and a surge arrester body (2) disposed on the base (1), characterized in that: The surge arrester body (2) is mounted on the base (1), and the base (1) is provided with three sets of anti-tipping components (3) in a circular array, which are movably connected to the peripheral side of the surge arrester body (2). The anti-tipping component (3) includes a telescopic rod (31) hinged to the base (1), a spring (32) sleeved on the telescopic rod (31), and a fixing clamp (33) hinged to the output shaft of the telescopic rod (31). The three fixing clamps (33) are located on the same plane and are all fixedly connected to the periphery of the arrester body (2). The spring (32) cooperates with the telescopic rod (31) to achieve elastic support and straightening of the arrester body (2), improve installation stability, and prevent tilting or tipping during operation.

2. The detachable and fixed surge arrester according to claim 1, characterized in that: A bellows (34) is fixedly provided on the peripheral side of the spring (32).

3. A detachable and fixed surge arrester according to claim 1, characterized in that: Adjacent fixing clamps (33) can be locked to each other.

4. A detachable and fixed surge arrester according to claim 1, characterized in that: The base (1) has a mounting hole (22), and the surge arrester body (2) is mounted on the base (1) through the mounting hole (22).

5. A detachable and fixed surge arrester according to claim 4, characterized in that: The base (1) is provided with a limiting component (4) for limiting the axial position of the surge arrester body (2).

6. A detachable and fixed surge arrester according to claim 5, characterized in that: The limiting component (4) includes an elastic element (41) and a snap-fit ​​element (42). The elastic element (41) drives the snap-fit ​​element (42) to move. The snap-fit ​​element (42) engages with the connecting flange (21) at the bottom of the surge arrester body (2) to apply a clamping force to the connecting flange (21) through the elastic force of the elastic element (41).

7. A detachable and fixed surge arrester according to claim 6, characterized in that: The number of the limiting components (4) is at least two, and they are spaced apart along the circumferential direction of the mounting hole (22).

8. A detachable and fixed surge arrester according to claim 7, characterized in that: The connecting flange (21) is provided with a limiting groove (23) that engages with the snap-fit ​​component (42).

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