A surge arrester that is easy to install

Abstract

The utility model provides a kind of lightning arrester convenient to install, include a lightning arrester body and a mounting seat. By being provided with the mounting seat of multiple installation sites, lightning arrester can be quickly and stably installed on target equipment or support, and installation operation is simple and flexible. Annular fixed part is provided on the mounting seat, and an installation part is integrated in the middle part, the installation part is equipped with multiple installation part inlets and limiting grooves, cooperate with the annular end cover and connecting piece structure of the one end of lightning arrester body, and the quick plug-in type clamping connection can be realized. At the same time, during installation process, telescopic rod and telescopic spring cooperate to provide axial pre-tightening force for lightning arrester body, so that it is connected more closely and firmly, and runs more stably. When disassembling, only need to rotate lightning arrester body reversely, and unloading can be easily completed, without using tools or disassembling multiple components. Therefore, the lightning arrester convenient to install is efficient and convenient during installation and disassembly process, and improves on-site operation efficiency.

Description

Technical Field

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

[0002] Surge arresters are important protective devices used in power systems. They are mainly used to limit the amplitude of lightning overvoltages and switching overvoltages, preventing voltage surges from damaging transmission and distribution equipment, thereby ensuring the safe and stable operation of the entire power system. Based on their structure and working principle, surge arresters can be classified into valve-type surge arresters, magnetic blow-out surge arresters, and metal oxide surge arresters. Among them, metal oxide surge arresters (MOVs) are widely used in substations, overhead transmission lines, and industrial and mining enterprises due to their fast response speed, excellent volt-ampere characteristics, and stable protection performance.

[0003] However, in practical applications, existing surge arrester installation methods present several inconveniences. Firstly, installation requires nuts to be installed in the mounting holes, necessitating additional disassembly tools, thus lengthying the installation process, especially during high-altitude operations or in harsh weather conditions, significantly increasing the difficulty. Secondly, if the surge arrester needs to be replaced or its condition checked during operation, each fastener must be removed individually, which is not only inefficient but also may lead to repetitive work and the risk of incorrect installation. Therefore, it is necessary to provide a surge arrester that is convenient and easy to install. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a surge arrester that is easy to install, which effectively improves the cumbersome installation and disassembly of some traditional surge arresters. At the same time, it avoids the use of nuts for installation, which can cause the arrester to be unable to be disassembled or even damaged due to rust. Therefore, this application is not only easy to install and safer, but also the surge arrester is more stable in operation.

[0005] An easy-to-install surge arrester includes a surge arrester body and a mounting base. The mounting base has multiple mounting positions and an annular fixing part. The annular fixing part has a mounting section in its center. The mounting section includes multiple mounting section inlets and limiting grooves connected to the mounting section inlets. The mounting section has a through hole in its center. The annular fixing part and the mounting base also have through holes corresponding to the through hole. Multiple telescopic rods are annularly arranged on the side of the mounting section of the annular fixing part. The side of the telescopic rod away from the annular fixing part is a circular plane. A telescopic spring is provided on the outer side of the telescopic rod. One end of the surge arrester body is an annular end cap. A connector is provided in the center of the annular end cap. The connector includes multiple L-shaped insertion parts arranged in annularly. The L-shaped insertion parts enter through the mounting section inlets and are engaged with the limiting grooves after the surge arrester body is rotated.

[0006] Preferably, the L-shaped insertion portion includes a long straight end and a short straight end perpendicular to the long straight end, the end of the short straight end being connected to the annular end cap.

[0007] Furthermore, the length of the long straight end is less than the inlet width of the mounting part inlet, and the thickness of the long straight end is equal to or slightly less than the thickness of the limiting groove.

[0008] Furthermore, the end of the long straight end is set to be conical.

[0009] Preferably, the telescopic rod of the annular fixing part is provided with an annular ring on its side, and the diameter of the annular ring is slightly larger than the diameter of the annular end cap.

[0010] Preferably, the surge arrester body includes a composite jacket and a surge arrester core disposed within the composite jacket. The composite jacket includes an insulating tube and a silicone rubber umbrella sleeve fitted outside the insulating tube. The surge arrester core is disposed inside the insulating tube.

[0011] Furthermore, the insulating tube is an epoxy glass fiber tube.

[0012] Furthermore, the surge arrester core includes a zinc oxide resistor disposed inside an insulating tube, a grounding electrode and a high-voltage electrode respectively disposed at both ends of the zinc oxide resistor, the grounding electrode being connected to a grounding screw exposed at one end of the insulating tube, and the high-voltage electrode being connected to a high-voltage screw exposed at the other end of the insulating tube.

[0013] Preferably, the composite jacket is provided with an annular end cap on the side near the grounding screw, the annular end cap being a ceramic annular end cap, and the high-voltage screw extending out and disposed on the ceramic annular end cap.

[0014] Preferably, the side of the annular end cap furthest from the high-pressure screw is shaped like a frustum.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model provides an easy-to-install surge arrester. By providing a mounting base with multiple mounting positions, the surge arrester can be quickly and securely installed on target equipment or brackets, making installation simple and flexible. The mounting base has an annular fixing part, with an integrated mounting section in its center. This mounting section has multiple mounting inlets and limiting grooves. Combined with the annular end cap and connector structure at one end of the surge arrester body, a quick-plug-in snap-fit ​​connection can be achieved. Specifically, during use, simply align one end of the surge arrester body with the annular fixing part of the mounting base and insert it, allowing the multiple L-shaped insertion parts on the connector to enter along the mounting inlets. Then, rotate the surge arrester body, and the L-shaped insertion parts will snap into the limiting grooves, completing a reliable fixation. Multiple telescopic rods annularly arranged on the side of the mounting section, together with an external telescopic spring, provide a continuous upward thrust to the surge arrester body during installation, ensuring the L-shaped insertion parts are tightly pressed into the limiting grooves, preventing loosening due to vibration or external force, and enhancing connection reliability. Meanwhile, the annular ring located on the side of the telescopic rod can encircle the surge arrester body, providing circumferential limiting support and effectively preventing displacement and swaying, thus achieving stable structural support and reliable electrical connection. During disassembly, the operator only needs to rotate the surge arrester body in the reverse direction to easily disengage the L-shaped insertion part from the limiting groove. Combined with the elastic force of the telescopic spring, the surge arrester body will be pushed upwards for quick and easy removal without tools. Therefore, this easy-to-install surge arrester offers efficient and convenient installation and disassembly, not only improving on-site maintenance efficiency but also significantly reducing the burden of manual operation, making it particularly suitable for high-altitude, outdoor, or frequently replaceable surge arrester applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the surge arrester body described in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the mounting base described in this utility model;

[0019] Figure 3 This is a partial structural diagram of the mounting base described in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure around the telescopic rod described in this utility model;

[0021] in:

[0022] 10-Surge arrester body, 20-Mounting base, 30-Annular fixing part, 40-Mounting part, 50-Annular ring, 41-Mounting part inlet, 42-Limiting groove, 43-Telescopic rod, 44-Circular plane, 45-Telescopic spring, 11-Annular end cap, 12-Connector, 13-Long straight end, 14-Short straight end, 15-Composite outer sleeve, 16-Grounding screw, 17-High voltage screw. Detailed Implementation

[0023] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] See Figures 1-4 This embodiment provides an easy-to-install surge arrester, comprising a surge arrester body 10 and a mounting base. The mounting base is provided with multiple mounting positions and an annular fixing part 30. A mounting part 40 is provided in the center of the annular fixing part 30. The mounting part 40 includes multiple mounting part inlets 41 and limiting grooves 42 connected to the mounting part inlets 41. A through hole is provided in the center of the mounting part 40. The annular fixing part 30 and the mounting base also have through holes corresponding to the through hole. Multiple telescopic rods 43 are annularly arranged on the side of the mounting part 40 of the annular fixing part 30. The telescopic rods 43 are located at... A circular plane 44 is provided on one side away from the annular fixing part 30, and a telescopic spring 45 is provided on the outer side of the telescopic rod 43; one end of the surge arrester body 10 is provided as an annular end cap 11, and a connector 12 is provided in the middle of the annular end cap 11. The connector 12 includes a plurality of L-shaped insertion parts arranged in annularly. The L-shaped insertion parts enter through the mounting part inlet 41 and are engaged in the limiting groove 42 after the surge arrester body 10 is rotated. An annular ring 50 is provided on the side of the telescopic rod 43 of the annular fixing part 30, and the diameter of the annular ring 50 is slightly larger than the diameter of the annular end cap 11. It should be noted that the mounting part inlet 41 and the limiting groove 42 in this application are L-shaped.

[0025] Preferably, the L-shaped insertion portion includes a long straight end 13 and a short straight end 14 perpendicular to the long straight end 13, the end of the short straight end 14 being connected to the annular end cap 11. This L-shaped insertion portion structure allows for reliable engagement between the L-shaped insertion portion and the limiting groove 42 via rotation after the surge arrester body 10 is vertically inserted into the mounting portion 40 through the mounting portion inlet 41. The short straight end 14 serves as the part fixedly connected to the connector body, securely mounting the entire insertion structure to the end of the surge arrester body 10, while the long straight end 13 serves as the main body for insertion and locking, entering the mounting portion 40 and embedding into the limiting groove 42.

[0026] Furthermore, the length of the long straight end 13 is less than the inlet width of the mounting part inlet 41, allowing it to pass smoothly through the opening of the mounting part 40 during insertion without easily getting stuck. The thickness of the long straight end 13 is equal to or slightly less than the thickness of the limiting groove 42, thus forming a close fit with the limiting groove 42 after rotational insertion, achieving a tight engagement. Specifically, based on this design, the L-shaped insertion part first ensures smooth operation of the surge arrester body 10 during insertion and rotation, avoiding difficulties in insertion and removal; secondly, the reasonable fit clearance after engagement effectively prevents the surge arrester from shaking or loosening due to external vibration, wind load, or long-term operation; in addition, the entire connection process can be completed without tools, significantly improving installation and disassembly efficiency, suitable for applications requiring rapid maintenance and frequent replacement, demonstrating the comprehensive advantages of simple structure, efficient operation, and reliable connection.

[0027] Furthermore, the end of the long straight end 13 is set in a conical shape. This effectively improves the efficiency of inserting the long straight end 13 into the long straight end 13, and further reduces the risk of damage or jamming of the connecting parts due to improper human operation. It also helps to extend the service life of the quick-release structure and enhances the reliability and stability of the surge arrester installation connection.

[0028] It should be noted that the surge arrester provided by this utility model is easy to install, and its installation process is simple and efficient, specifically including the following steps: First, the mounting base is fixed to the predetermined installation position, such as a pole support or equipment platform, through multiple mounting positions set on it, so that it is firmly in place. The center of the mounting base is provided with an annular fixing part 30, and the middle of the annular fixing part 30 is provided with an installation part 40. The installation part 40 is provided with multiple corresponding installation part inlets 41 and limiting grooves 42. At the same time, multiple telescopic rods 43 are arranged in annularly on its side. The side of the telescopic rod 43 away from the fixing part is set as an annular plane 44, and a telescopic spring 45 is sleeved on the outside. During installation, the operator aligns the annular end cap 11 at one end of the surge arrester body 10 with the annular fixing part 30 of the mounting base and slowly inserts it between the annular rings 50, so that the surge arrester body 10 and the mounting base are initially installed and fitted. At this time, the multiple L-shaped insertion parts in the middle of the annular end cap 11 are respectively aligned with the multiple mounting inlets 41 of the mounting part 40, that is, the long straight end 13 of the L-shaped insertion part enters the mounting inlet 41 vertically downward. After the long straight end 13 of the L-shaped insertion part is fully inserted into the mounting inlet 41, the operator rotates the surge arrester body 10 clockwise, so that the long straight end 13 of the L-shaped insertion part slides along the inside of the mounting part 40 and finally gets stuck in the limiting groove 42, thereby achieving rapid fixation of the surge arrester body 10. During this process, the telescopic rod 43 on the side of the mounting section 40, under the elastic force of the spring, exerts a continuous upward pre-tightening force on the arrester body 10, making the L-shaped insertion part fit more tightly into the limiting groove 42, thereby improving connection stability. At the same time, the annular ring 50 surrounds the outer side of the annular end cap 11, providing circumferential support and limiting effect for the arrester body 10, preventing lateral swaying and enhancing overall vibration resistance. For disassembly, simply disconnect the power to ensure safety, then rotate the arrester body 10 counterclockwise to disengage the L-shaped insertion part from the limiting groove 42. During the unscrewing process, the telescopic spring 45 continues to release its elastic force, causing the arrester body 10 to automatically lift. Finally, the operator can directly pull the arrester body 10 upwards to complete the disassembly. The entire process requires no tools, is simple and quick to operate, and is particularly suitable for high-altitude, outdoor, or frequently changing arrester scenarios, significantly improving on-site maintenance efficiency and operational safety.

[0029] Preferably, the surge arrester body 10 includes a composite outer sleeve 15 and a surge arrester core disposed within the composite outer sleeve 15. The composite outer sleeve 15 includes an insulating tube and a silicone rubber shed sleeve fitted over the outside of the insulating tube. The surge arrester core is disposed inside the insulating tube. Further, the insulating tube is an epoxy fiberglass tube. It should be noted that the use of the composite outer sleeve 15 in the surge arrester body 10 effectively improves the insulation performance and environmental resistance of the surge arrester. The epoxy fiberglass tube, as the insulating tube, has excellent mechanical strength and corrosion resistance, ensuring long-term stable operation of the surge arrester in complex and harsh environments. The externally fitted silicone rubber shed sleeve not only enhances the anti-pollution flashover capability but also has good UV resistance and aging resistance, thus significantly extending the service life of the surge arrester. Simultaneously, the surge arrester core is disposed inside the insulating tube, ensuring stable internal electrical performance and a compact and reliable overall structure.

[0030] Furthermore, the surge arrester core includes a zinc oxide resistor housed within an insulating tube, a grounding electrode, and a high-voltage electrode respectively disposed at both ends of the zinc oxide resistor. The grounding electrode is connected to a grounding screw 16 protruding from one end of the insulating tube, and the high-voltage electrode is connected to a high-voltage screw 17 protruding from the other end of the insulating tube. The zinc oxide resistor, as the core discharge element, possesses excellent nonlinear resistance characteristics, enabling it to quickly conduct during lightning strikes, shunting the overcurrent and effectively protecting power equipment. The grounding electrode and high-voltage electrode are respectively disposed at both ends of the zinc oxide resistor, ensuring a clear current path and stable conductivity. Both the grounding screw 16 and the high-voltage screw 17 protrude from both ends of the insulating tube, facilitating connection and installation with external circuits, improving installation convenience and safety. In addition, the electrode material is preferably a corrosion-resistant alloy, enhancing the contact stability between the electrode and the zinc oxide resistor and the overall durability, ensuring that the surge arrester maintains good electrical performance and reliable protection during long-term operation.

[0031] Preferably, the composite jacket 15 is provided with an annular end cap 11 near the grounding screw 16. The annular end cap 11 is a ceramic annular end cap 11, and the high-voltage screw 17 extends out and is disposed on the ceramic annular end cap 11. The ceramic annular end cap 11 has excellent insulation performance and high temperature resistance, which can effectively isolate the internal electrical components of the surge arrester from the external environment, improve the overall safety and sealing performance. The high strength and stability of the ceramic material make the end cap less prone to deformation or cracking during long-term operation, and it also has good chemical corrosion resistance, which helps to improve the adaptability of the surge arrester under harsh climatic conditions. Alternatively, the annular end cap 11 may be an epoxy resin annular end cap 11 or a glass fiber reinforced epoxy resin annular end cap 11 or other materials, and the outer side of the annular end cap 11 is coated with a waterproof layer, a UV-resistant layer, and a wear-resistant layer.

[0032] Preferably, the side of the annular end cap 11 furthest from the high-pressure screw 17 is truncated into a frustum shape. This facilitates the insertion of the annular end cap 11 into the annular ring 50. It should be noted that the through hole and the through-hole facilitate the screw's extension through this location, while also providing a certain degree of restraint. Alternatively, the annular end cap 11 may have a recessed limiting groove, on which an annular rubber ring 18 is provided. The inner side of the annular ring 50 has a recessed annular groove 19 on the outer wall side for tightening connection with the annular rubber ring, thereby achieving a further tight connection.

[0033] This utility model provides a surge arrester that is easy to install. By setting a mounting base with multiple mounting positions, the surge arrester can be quickly and securely installed on the target equipment or bracket, and the installation operation is simple and flexible. The mounting base is provided with an annular fixing part 30, and a mounting part 40 is integrated in the middle of the mounting base. The mounting part 40 has multiple mounting part inlets 41 and limiting grooves 42. With the annular end cap 11 and the connecting piece 12 set at one end of the surge arrester body 10, a quick plug-in snap-fit ​​connection can be achieved. Specifically, in use, simply align one end of the surge arrester body 10 with the annular fixing part 30 of the mounting base and insert it, so that the multiple L-shaped insertion parts on the connecting piece 12 enter along the mounting part inlets 41. Then rotate the surge arrester body 10, and the L-shaped insertion parts can be snapped into the limiting grooves 42 to complete the reliable fixation. Multiple telescopic rods 43 arranged in a ring on the side of the mounting section 40, together with an external telescopic spring 45, provide a continuous upward pushing force to the arrester body 10 during installation, ensuring the L-shaped insertion part is tightly pressed into the limiting groove 42, preventing loosening due to vibration or external force, and enhancing connection reliability. Simultaneously, the annular ring 50 located on the side of the telescopic rods 43 encircles the arrester body 10, providing circumferential limiting support and effectively preventing displacement and swaying, thus achieving stable structural support and reliable electrical connection. During disassembly, the operator only needs to rotate the arrester body 10 in the opposite direction to easily disengage the L-shaped insertion part from the limiting groove 42. Combined with the elastic force of the telescopic spring 45, the arrester body 10 will be pushed upwards for quick removal without tools. Therefore, this easy-to-install arrester offers efficient and convenient installation and disassembly, improving on-site maintenance efficiency and significantly reducing manual operation burden, making it particularly suitable for high-altitude, outdoor, or frequently replaceable arrester applications.

[0034] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A surge arrester that is easy to install, comprising a surge arrester body and a mounting base, characterized in that: The mounting base is provided with multiple mounting positions and an annular fixing part. The annular fixing part is provided with a mounting part in the middle. The mounting part includes multiple mounting part inlets and limiting grooves connected to the mounting part inlets. The mounting part is provided with a through hole in the middle. The annular fixing part and the mounting base are also provided with through holes corresponding to the through hole. Multiple telescopic rods are provided in a ring on the side of the mounting part of the annular fixing part. The side of the telescopic rod away from the annular fixing part is set as a circular plane. A telescopic spring is provided on the outer side of the telescopic rod. One end of the surge arrester body is provided with an annular end cap, and a connector is provided in the middle of the annular end cap. The connector includes a plurality of L-shaped insertion parts arranged in an annular shape. The L-shaped insertion parts enter through the inlet of the mounting part and are engaged in the limiting groove after the surge arrester body is rotated. The telescopic rod of the annular fixing part is provided with an annular ring on its side, and the diameter of the annular ring is slightly larger than the diameter of the annular end cap.

2. The surge arrester for easy installation as described in claim 1, characterized in that, The L-shaped insertion portion includes a long straight end and a short straight end perpendicular to the long straight end, the end of the short straight end being connected to the annular end cap.

3. The surge arrester for easy installation as described in claim 2, characterized in that, The length of the long straight end is less than the inlet width of the mounting part inlet, and the thickness of the long straight end is equal to or slightly less than the thickness of the limiting groove.

4. The surge arrester for easy installation as described in claim 2, characterized in that, The end of the long straight end is set to be conical.

5. The surge arrester for easy installation as described in claim 1, characterized in that, The surge arrester body includes a composite jacket and a surge arrester core disposed within the composite jacket. The composite jacket includes an insulating tube and a silicone rubber umbrella sleeve fitted outside the insulating tube. The surge arrester core is disposed inside the insulating tube.

6. The surge arrester for easy installation as described in claim 5, characterized in that, The insulating tube is an epoxy glass fiber tube.

7. The surge arrester for easy installation as described in claim 5, characterized in that, The surge arrester core includes a zinc oxide resistor disposed inside an insulating tube, a grounding electrode and a high-voltage electrode respectively disposed at both ends of the zinc oxide resistor, the grounding electrode being connected to a grounding screw exposed at one end of the insulating tube, and the high-voltage electrode being connected to a high-voltage screw exposed at the other end of the insulating tube.

8. The surge arrester for easy installation as described in claim 7, characterized in that, The composite jacket is provided with an annular end cap on the side near the grounding screw. The annular end cap is a ceramic annular end cap, and the high-voltage screw extends out and is disposed on the ceramic annular end cap.

9. The surge arrester for easy installation as described in claim 7, characterized in that, The side of the annular end cap furthest from the high-pressure screw is shaped like a frustum.

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