A lightning protection device convenient to install and maintain

Abstract

The utility model provides a lightning arrester convenient to installation maintenance, contain a lightning arrester body and a mounting seat, cooperate through the connecting rod on the annular end cover on the lightning arrester body with the insertion hole of annular mounting seat and the cooperation of annular recess that mounting seat contains, make lightning arrester body only need to aim at insertion hole and press down and rotate a certain angle when installing can realize quick positioning and fixed, significantly simplified operation step, improved installation efficiency. Meanwhile, the spherical clamping block in the elastic insertion assembly set up in the inboard of mounting seat can be clamped into the recess in the side of end cover after the rotation of lightning arrester body, realize double limit locking, effectively prevent loosening and falling in the operation process, improve the anti -shock performance and stability of device. In addition, the elastic insertion assembly realizes the buffer and automatic reset function through damping spring, avoids the structural damage caused by rigid clamping, and can adapt to the size deviation under different working conditions, improves the assembly compatibility and sealing property.

Description

Technical Field

[0001] This utility model relates to the field of lightning arrester technology, specifically to a lightning arrester device that is easy to install and maintain. 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 lightning protection device that is easy to install and maintain. It effectively improves the cumbersome installation and disassembly of some traditional lightning arresters, and avoids the inability to disassemble or even damage caused by the use of nuts for installation, which can lead to rust. Therefore, this application is not only easy to install and safer, but also the lightning arrester works more stably.

[0005] A surge arrester device that is easy to install and maintain includes a surge arrester body and a mounting base. The surge arrester body has an annular end cap at one end, and a pair of connecting rods and multiple grooves are provided on the side of the annular end cap. The mounting base includes a mounting base body, mounting positions disposed on the mounting base body, and an annular mounting seat. An annular groove is recessed into the inner side wall of the annular mounting seat towards the outer side wall. An insertion hole extending downwards from the top inner side of the annular mounting seat connects to the annular groove. Multiple elastic insertion components that mate with the groove are provided on the inner side of the annular mounting seat. Each elastic insertion component includes a telescopic shaft, a spherical locking block, and a damping spring. Several mounting holes are recessed into the inner side wall of the annular mounting seat towards the outer side wall. The telescopic shaft is connected to one side of the mounting holes near the outer side wall of the annular mounting seat. The spherical locking block is connected to the other end of the telescopic shaft, with a portion of the spherical locking block protruding from the mounting holes. The damping spring is sleeved on the outer side of the telescopic shaft.

[0006] Preferably, the mounting base is provided with a through hole at the position corresponding to the annular mounting base, and the axis of the through hole coincides with the axis of the annular mounting base.

[0007] Preferably, the diameter of the interior of the mounting hole is larger than the diameter of the opening of the mounting hole, and the diameter of the opening of the mounting hole is smaller than the diameter of the spherical block.

[0008] 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.

[0009] Furthermore, the insulating tube is an epoxy glass fiber tube.

[0010] 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.

[0011] Preferably, the composite jacket is provided with the annular end cap on the side near the grounding screw, and the high-voltage screw extends out and is provided on the annular end cap.

[0012] Preferably, the side of the annular end cap furthest from the high-pressure screw is shaped like a frustum.

[0013] Preferably, the mounting base is an L-shaped mounting base.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides a lightning arrester device that is easy to install and maintain. It includes a lightning arrester body and a mounting base. Through the cooperation of the connecting rod on the annular end cap of the lightning arrester body with the insertion hole and annular groove of the annular mounting base, the lightning arrester body can be quickly positioned and fixed by simply aligning it with the insertion hole, pressing it downwards, and rotating it a certain angle during installation. This significantly simplifies the operation steps and improves installation efficiency. Simultaneously, the spherical locking block in the elastic insertion assembly located inside the mounting base can engage with the groove on the side of the end cap after the lightning arrester body rotates, achieving double-limit locking and effectively preventing loosening and detachment during operation, thus improving the device's seismic resistance and stability. Furthermore, the elastic insertion assembly uses a damping spring to achieve buffering and automatic reset functions, avoiding structural damage caused by rigid clamping and adapting to dimensional deviations under different operating conditions, improving assembly compatibility and sealing. Moreover, the spherical locking block allows for smooth transitions during installation and disassembly without interference. Therefore, this easy-to-install and maintain lightning protection device reduces reliance on tools and operational experience while achieving efficient installation and disassembly, making it particularly suitable for high-altitude operations or scenarios requiring frequent maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the surge arrester body described in this utility model;

[0017] Figure 2 This is a top view of the mounting base described in this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting base described in this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the annular mounting base described in this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0021] in:

[0022] 10-Surge arrester body, 20-Mounting base, 11-Annular end cap, 12-Connecting rod, 13-Groove, 14-Composite jacket, 15-Grounding screw, 16-High voltage screw, 21-Mounting base body, 22-Annular mounting base, 23-Annular groove, 24-Plug-in hole, 25-Elastic insertion assembly, 26-Telescopic shaft, 27-Spherical locking block, 28-Damping spring, 29-Mounting hole, 210-Through hole. 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 1-5 This embodiment provides a lightning protection device that is easy to install and maintain, comprising a lightning arrester body 10 and a mounting base 20. The lightning arrester body 10 has an annular end cap 11 at one end, and the annular end cap 11 has a pair of connecting rods 12 and multiple grooves 13 on its side. The mounting base 20 includes a mounting base body 21, a mounting position disposed on the mounting base body 21, and an annular mounting seat 22. An annular groove 23 is recessed into the inner side wall of the annular mounting seat 22 towards the outer side wall. A insertion hole 24 extending downward from the top inner side of the annular mounting seat 22 and connecting to the annular groove 23 is provided. The inner side of the annular mounting base 22 is provided with a plurality of elastic insertion components 25 that cooperate with the groove 13. Each elastic insertion component 25 includes a telescopic shaft 26, a spherical locking block 27, and a damping spring 28. The inner sidewall of the annular mounting base 22 is recessed towards the outer sidewall with a plurality of mounting holes 29. The telescopic shaft 26 is connected to the side of the mounting hole 29 near the outer sidewall of the annular mounting base 22. The spherical locking block 27 is connected to the other end of the telescopic shaft 26. The spherical locking block 27 protrudes from the mounting hole 29. The damping spring 28 is sleeved on the outer side of the telescopic shaft 26.

[0025] Preferably, the mounting base 20 is provided with a through hole 210 at the position corresponding to the annular mounting base 22, and the axis of the through hole 210 coincides with the axis of the annular mounting base 22. This through hole 210 allows the grounding screw 15 included in the surge arrester body 10 to pass through, thereby enabling the grounding screw 15 to be directly electrically connected to an external grounding device or wire. This ensures that the surge arrester can quickly and effectively guide the current to the ground in the event of a lightning strike or overvoltage, achieving a reliable current discharge function and improving the overall protection performance of the system.

[0026] Preferably, the diameter of the interior of the mounting hole 29 is larger than the diameter of the opening of the mounting hole 29, and the diameter of the opening of the mounting hole 29 is smaller than the diameter of the spherical locking block 27. The spherical locking block 27 is confined within the mounting hole 29 to prevent it from coming out entirely. When the groove 13 of the surge arrester body 10 is aligned with the spherical locking block 27, the locking block can automatically spring into the groove 13 under the action of the damping spring 28, completing a quick locking. When disassembly is required, the surge arrester body 10 rotates in the opposite direction, causing the spherical locking block 27 to be misaligned with the groove 13 of the surge arrester body 10. At this time, the spherical locking block 27 will be squeezed by the side wall of the surge arrester body 10 and retract into the mounting hole 29 under the elastic action of the damping spring 28, thereby releasing the locking state and preventing the locking block from interfering with the surge arrester body 10.

[0027] It should be noted that during installation, the mounting base 20 is first quickly and securely installed onto the target equipment or bracket via the mounting position. Then, the annular end cap 11 of the surge arrester body 10 is aligned with the annular mounting seat 22 on the mounting base 20, aligning the connecting rod 12 on the side of the end cap with the insertion hole 24. The surge arrester body 10 is then pressed downwards vertically. At this point, the connecting rod 12 passes through the insertion hole 24 and continues to move downwards to the annular groove 23 within the annular mounting seat 22. Subsequently, the operator can gently rotate the surge arrester body 10 to allow the connecting rod 12 to rotate and embed into the annular groove 23, completing the initial mechanical engagement. Simultaneously, during the rotation and positioning of the surge arrester body 10, the multiple elastic insertion components 25 provided inside the mounting base 20 automatically spring into the corresponding groove 13 on the surge arrester end cap under the action of the damping spring 28, achieving dual positioning and locking, thereby ensuring a secure connection between the surge arrester body 10 and the mounting base 20. No special tools are required during installation; the operation is simple and the installation efficiency is high.

[0028] When it is necessary to disassemble the surge arrester body 10, simply rotate the surge arrester body 10 slowly in the opposite direction, causing the connecting rod 12 to gradually disengage from the annular groove 23 and align with the insertion hole 24. With rotation, the spherical locking block 27, originally engaged in the end cap groove 13, misaligns with the side wall of the surge arrester body 10. The spherical locking block 27 is compressed by the outer wall of the body and retracts into the mounting hole 29 under the force of the damping spring 28, automatically disengaging from the locking state and avoiding interference or damage to the surge arrester body 10. Subsequently, the operator can directly lift the surge arrester body 10 upwards, causing the connecting rod 12 to disengage from the insertion hole 24, thus completing the unlocking and separation of the surge arrester body 10 from the mounting base 20. The entire disassembly process is quick and efficient, particularly suitable for on-site maintenance or replacement operations, significantly improving maintenance convenience and operational safety.

[0029] Preferably, the surge arrester body 10 includes a composite outer sleeve 14 and a surge arrester core disposed within the composite outer sleeve 14. The composite outer sleeve 14 includes an insulating tube and a silicone rubber shed sleeve fitted over 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 14 in the surge arrester body 10 effectively improves the surge arrester's insulation performance and environmental resistance. The epoxy fiberglass tube, as the insulating tube, possesses excellent mechanical strength and corrosion resistance, ensuring the surge arrester's long-term stable operation 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 surge arrester's service life. 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 15 protruding from one end of the insulating tube, and the high-voltage electrode is connected to a high-voltage screw 16 protruding from the other end of the insulating tube. As the core discharge element, the zinc oxide resistor 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 15 and the high-voltage screw 16 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 annular end cap 11 is provided on the side of the composite jacket 14 near the grounding screw 15, and the high-voltage screw 16 extends out and is disposed on the annular end cap 11. It should be noted that the annular end cap 11 is a 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 away from the high-pressure screw 16 is truncated into a frustum shape. This facilitates the insertion of the annular end cap 11 into the annular mounting base 22. Preferably, the mounting base 20 is an L-shaped mounting base 20, which facilitates the installation of the mounting base 20.

[0033] Preferably, the top of the annular end cap 11 is provided with an annular rubber ring, and the top of the annular groove 23 of the annular mounting base 22 is provided with a second annular groove. When the annular end cap 11 is inserted into the annular mounting base 22, the annular rubber ring is engaged in the second annular groove, thereby achieving further connection and reinforcement.

[0034] This utility model provides a lightning arrester device that is easy to install and maintain. It includes a lightning arrester body 10 and a mounting base 20. Through the cooperation of the connecting rod 12 on the annular end cap 11 of the lightning arrester body 10 with the insertion hole 24 and annular groove 23 of the annular mounting base 22 included in the mounting base 20, the lightning arrester body 10 can be quickly positioned and fixed by simply aligning it with the insertion hole 24, pressing it downwards, and rotating it at a certain angle. This significantly simplifies the operation steps and improves installation efficiency. Simultaneously, the spherical locking block 27 in the elastic insertion component 25 located inside the mounting base 20 can engage with the groove 13 on the side of the end cap after the lightning arrester body 10 is rotated, achieving double limiting and locking. This effectively prevents loosening and detachment during operation, improving the device's seismic resistance and stability. Furthermore, the elastic insertion component 25 utilizes a damping spring 28 to achieve buffering and automatic reset functions, avoiding structural damage caused by rigid clamping and adapting to dimensional deviations under different working conditions. This improves assembly compatibility and sealing. Moreover, the spherical locking block 27 allows for smooth transitions during installation and disassembly without interference. Therefore, this easy-to-install and maintain lightning protection device achieves efficient installation and disassembly while reducing reliance on tools and operational experience, making it particularly suitable for high-altitude operations or scenarios requiring frequent maintenance.

[0035] 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 lightning arrester device that is easy to install and maintain, comprising a lightning arrester body and a mounting base, characterized in that: The surge arrester body has an annular end cap at one end. The annular end cap has a pair of connecting rods and multiple grooves on its side. The mounting base includes a mounting base body, mounting positions on the mounting base body, and an annular mounting seat. An annular groove is recessed into the inner side wall of the annular mounting seat towards the outer side wall. A insertion hole extending downwards from the top inner side of the annular mounting seat connects to the annular groove. Multiple elastic insertion components that mate with the groove are provided on the inner side of the annular mounting seat. Each elastic insertion component includes a telescopic shaft, a spherical locking block, and a damping spring. Several mounting holes are recessed into the inner side wall of the annular mounting seat towards the outer side wall. The telescopic shaft is connected to one side of the mounting hole near the outer side wall of the annular mounting seat. The spherical locking block is connected to the other end of the telescopic shaft, with a portion of the spherical locking block protruding from the mounting hole. The damping spring is sleeved on the outside of the telescopic shaft.

2. The lightning protection device that is easy to install and maintain as described in claim 1, characterized in that, The mounting base is provided with a through hole at the position corresponding to the annular mounting base, and the axis of the through hole coincides with the axis of the annular mounting base.

3. The lightning protection device for easy installation and maintenance as described in claim 1, characterized in that, The diameter of the inside of the mounting hole is greater than the diameter of the opening of the mounting hole, and the diameter of the opening of the mounting hole is smaller than the diameter of the spherical block.

4. The lightning protection device that is easy to install and maintain 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.

5. The lightning protection device for easy installation and maintenance as described in claim 4, characterized in that, The insulating tube is an epoxy glass fiber tube.

6. The lightning protection device for easy installation and maintenance as described in claim 4, 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.

7. The lightning protection device for easy installation and maintenance as described in claim 6, characterized in that, The composite jacket is provided with an annular end cap on the side near the grounding screw, and the high-voltage screw extends out and is provided on the annular end cap.

8. The lightning protection device for easy installation and maintenance as described in claim 6, characterized in that, The side of the annular end cap furthest from the high-pressure screw is shaped like a frustum.

9. The lightning protection device that is easy to install and maintain as described in claim 1, characterized in that, The mounting base is an L-shaped mounting base.

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