Detachable lightning arrester

By designing a drop-out and disassembly structure for the surge arrester, the problem of the surge arrester getting stuck during the power outage drop-out process is solved, realizing automatic disconnection and convenient maintenance, thus improving the safety and convenience of the equipment.

CN223941609UActive Publication Date: 2026-02-24JIANGSU HAINA NINGYUAN POWER ENG CONSULTING CO LTD
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Patent Information

Application Number
CN202520033622.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-07
Publication Date
2026-02-24
Estimated Expiration
2035-01-07

AI Technical Summary

Technical Problem

Existing surge arresters are prone to jamming during the power outage drop process, which can prevent them from dropping normally and cause equipment damage.

Method used

A detachable surge arrester was designed, which includes a drop-out structure and a disassembly structure. The copper wire is disconnected to release the spring tension and drive the mounting block to rotate. Combined with the pin and stop bar, it realizes convenient disassembly and height adjustment, ensuring that the surge arrester can automatically detach in the event of a fault and is easy to maintain.

Benefits of technology

This improves the safety and convenience of surge arresters, ensuring automatic disconnection from the equipment in case of a fault, preventing losses and facilitating maintenance and replacement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the electrical field, and provides a detachable lightning arrester which comprises a load insulation support column, and two ends of the load insulation support column are provided with falling structures. The falling structure comprises a first mounting plate, a first connecting block, a first spring, a second mounting plate, an adjusting block, a lightning arrester main body, a first mounting block, a copper wire, a second mounting block, a second spring, a second connecting block and a third mounting plate; and the bottom end of the first mounting plate is mounted at the top end of the load insulation support column. Through the arrangement of the falling structure, when an accident occurs, a copper wire is broken, the tensile force borne by a second spring is released, a second connecting block is driven to pull a first mounting block, the first mounting block drives an adjusting block to be far away from the first connecting block, and therefore the first mounting block is driven to rotate around a plug pin, the adjusting block is rotated, and the height can be conveniently adjusted; the lightning arrester has the functions of isolating faults and facilitating maintenance, and the safety of the lightning arrester is improved.
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Description

Technical Field

[0001] This utility model relates to the electrical field, and in particular to a detachable surge arrester. Background Technology

[0002] This device is primarily used to protect power equipment and lines from lightning strikes. It processes lightning surges and guides them to the ground, preventing arcing and electrical breakdown, thus protecting equipment and lines from damage. The surge arrester operates based on the characteristics of a nonlinear medium. When equipment or lines are struck by lightning, the surge arrester processes the lightning surge and guides it to the ground. During operation, the surge arrester uses a driver to drive the contact switch to contact the electrodes, pulling the contacts and electrodes to cause the unit to drop, forming a large resistance that protects equipment and lines from lightning strikes and electrical breakdown. This device is widely used in: substations (to protect transformer equipment and transmission lines), power plants (to protect power equipment and lines from lightning strikes), rail transit (to prevent lightning damage to power equipment, signaling equipment, and track facilities), and buildings (to ensure the safety of lightning protection facilities in high-rise buildings), etc.

[0003] However, existing devices typically rely on the weight of the surge arrester itself to cause the contacts and motor unit to fall during a power outage. This process is prone to jamming and accidents, preventing the device from falling and causing serious damage. Utility Model Content

[0004] The purpose of this invention is to provide a detachable surge arrester to address the shortcomings of existing surge arresters in terms of drop-out functionality.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a detachable surge arrester, including a load insulation support;

[0006] Drop structures are installed at both ends of the load insulation support;

[0007] The drop-out structure includes a first mounting plate, a first connecting block, a first spring, a second mounting plate, an adjusting block, a surge arrester body, a copper wire, a second mounting block, a second spring, a second connecting block, and a third mounting plate. The bottom end of the first mounting plate is mounted on the top end of the load insulation support. The top surface of the first mounting plate is equipped with a first connecting block. The top surface of the first connecting block is fixed with a first spring. The top end of the first spring is fixed with a second mounting plate. An adjusting block is provided at the bottom end of the first connecting block on the side away from the first mounting plate. The bottom of the adjusting block is equipped with the surge arrester body. The bottom of the surge arrester body is equipped with a first mounting block. The bottom of the first mounting block is equipped with a copper wire. The end of the copper wire away from the first mounting block is equipped with a second mounting block. A second spring is fixed on one side of the second mounting block. The side of the second spring away from the second mounting block is fixed with a second connecting block. The top end of the second mounting block is equipped with a third mounting plate.

[0008] The first mounting block has a disassembly and assembly structure running through its interior.

[0009] Preferably, the top end of the load insulation support is bolted to the first mounting plate, and the bottom end of the load insulation support is bolted to the third mounting plate.

[0010] Preferably, the first mounting plate, the first connecting block, and the second mounting plate are connected by a shaft, and the first connecting block does not contact or connect with the adjusting block.

[0011] Preferably, the adjusting block is threadedly connected to the surge arrester body, the surge arrester body is threadedly connected to the first mounting block, and the surge arrester body is threadedly connected to the copper wire.

[0012] Preferably, the first mounting block and the second connecting block do not contact each other, the copper wire is connected to the second mounting block by bolts, and the second mounting block and the second connecting block are connected by a shaft.

[0013] Preferably, the disassembly and assembly structure includes a pin, a third spring, a telescopic rod, a third connecting block, and a stop bar. The pin passes through the interior of the first mounting block, a third spring is fixed to one side of the pin, a telescopic rod passes through the interior of the third spring, a third connecting block is fixed to one side of the telescopic rod, and a stop bar is provided on the exterior of the third connecting block.

[0014] Preferably, the pin passes through the interior of the second mounting block and does not contact or connect with it, and the pin is fixedly connected to the side of the telescopic rod away from the third connecting block.

[0015] Preferably, the third spring is fixedly connected to the third connecting block, and the third connecting block is connected to the stop lever via a shaft.

[0016] The advantages of the detachable surge arrester provided by this utility model are as follows:

[0017] By incorporating a drop-out mechanism, the copper wire will break in the event of an accident, releasing the tension on the second spring. This releases the tension in the second connecting block, causing the first mounting block to pull the first mounting block away from the first connecting block. Consequently, the first mounting block rotates around the pin. Rotating the adjusting block allows for easy height adjustment, thus enabling the device to isolate faults and facilitate maintenance, thereby improving the safety of the surge arrester.

[0018] By incorporating a disassembly and assembly structure, the first and second mounting blocks can be installed by moving the stop lever so that it is aligned with the pin. Conversely, by moving the stop lever so that it is at a 90° angle with the pin, the first and second mounting blocks can be installed. This design enables the device to be easily disassembled and assembled, thus improving the convenience of the surge arrester. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention viewed from below;

[0020] Figure 2 For the present utility model Figure 1 Enlarged view at point A;

[0021] Figure 3 This is a top-view three-dimensional schematic diagram of the present invention;

[0022] Figure 4 This is a three-dimensional cross-sectional schematic diagram of the present invention;

[0023] Figure 5 For the present utility model Figure 4 Enlarged view at point B;

[0024] Figure 6 This is a three-dimensional enlarged schematic diagram of the first mounting block of this utility model.

[0025] The reference numerals in the diagram are as follows: 1. Load insulation support; 2. Drop structure; 201. First mounting plate; 202. First connecting block; 203. First spring; 204. Second mounting plate; 205. Adjusting block; 206. Surge arrester body; 207. First mounting block; 208. Copper wire; 209. Second mounting block; 210. Second spring; 211. Second connecting block; 212. Third mounting plate; 3. Disassembly and assembly structure; 301. Pin; 302. Third spring; 303. Telescopic rod; 304. Third connecting block; 305. Stop bar. 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 Figures 1-6 The present invention provides a detachable surge arrester, including a load insulation support 1.

[0028] Reference Figure 1 As shown, drop-out structures 2 are installed at both ends of the load insulation support 1. Each drop-out structure 2 includes a first mounting plate 201, a first connecting block 202, a first spring 203, a second mounting plate 204, an adjusting block 205, a surge arrester body 206, a first mounting block 207, a copper wire 208, a second mounting block 209, a second spring 210, a second connecting block 211, and a third mounting plate 212. The bottom end of the first mounting plate 201 is installed at the top end of the load insulation support 1, and the top end of the first mounting plate 201... A first connecting block 202 is installed on the top surface of the first connecting block 202. A first spring 203 is fixed to the top surface of the first connecting block 202. A second mounting plate 204 is fixed to the top of the first spring 203. An adjusting block 205 is provided at the bottom end of the first connecting block 202 on the side away from the first mounting plate 201. A surge arrester body 206 is installed at the bottom of the adjusting block 205. A first mounting block 207 is installed at the bottom of the surge arrester body 206. A copper wire 208 is provided at the bottom of the first mounting block 207. The copper wire 208 is located away from the first mounting plate 201. A second mounting block 209 is installed at one end of mounting block 207. A second spring 210 is fixed to one side of the second mounting block 209. A second connecting block 211 is fixed to the side of the second spring 210 away from the second mounting block 209. A third mounting plate 212 is installed at the top of the second mounting block 209. The top of the load insulation support 1 is bolted to the first mounting plate 201, and the bottom of the load insulation support 1 is bolted to the third mounting plate 212. The first mounting plate 201 and the first connecting block 209 are also connected. 2. The second mounting plate 204 is connected by a shaft. The first connecting block 202 and the adjusting block 205 are not connected. The adjusting block 205 is threaded to the arrester body 206. The arrester body 206 is threaded to the first mounting block 207. The arrester body 206 is threaded to the copper wire 208. The first mounting block 207 and the second connecting block 211 are not connected. The copper wire 208 and the second mounting block 209 are connected by bolts. The second mounting block 209 and the second connecting block 211 are connected by a shaft.

[0029] In the event of an accident, the copper wire 208 will break, releasing the tension on the second spring 210. This will cause the second connecting block 211 to pull the first mounting block 207. The first mounting block 207 will then move the adjusting block 205 away from the first connecting block 202, thereby causing the first mounting block 207 to rotate around the pin 301. Rotating the adjusting block 205 allows for easy height adjustment, thus enabling the device to isolate faults and facilitate maintenance.

[0030] Reference Figure 4 and Figure 5 As shown, a disassembly and assembly structure 3 runs through the interior of the first mounting block 207. The disassembly and assembly structure 3 includes a pin 301, a third spring 302, a telescopic rod 303, a third connecting block 304, and a stop bar 305. The pin 301 runs through the interior of the first mounting block 207. The third spring 302 is fixed to one side of the pin 301. The telescopic rod 303 runs through the interior of the third spring 302. The third connecting block 304 is fixed to one side of the telescopic rod 303. A stop bar 305 is provided on the outside of the third connecting block 304. The pin 301 runs through the interior of the second mounting block 209 and does not contact or connect with it. The pin 301 is fixedly connected to the side of the telescopic rod 303 away from the third connecting block 304. The third spring 302 is fixedly connected to the third connecting block 304. The third connecting block 304 and the stop bar 305 are connected by a shaft.

[0031] When the lever 305 is moved so that it is in a straight line with the pin 301, the pin 301 can be placed outside the first mounting block 207. Conversely, when the lever 305 is moved so that the lever 305 is at 90° with the pin 301, the first mounting block 207 and the second mounting block 209 can be installed, thus realizing the function of easy disassembly and assembly of the device.

[0032] In summary, as Figures 1-6As shown, in use, the surge arrester has the first mounting plate 201 and the third mounting plate 212 installed at both ends of the load insulation support 1. The adjusting block 205 is rotated to adjust to a suitable height, and the surge arrester body 206 is pushed to position the adjusting block 205 at the bottom of the first connecting block 202. Squeezing the first connecting block 202 causes the second mounting plate 204 to retract under pressure. The two ends of the copper wire 208 are respectively installed at the bottom of the surge arrester body 206 and on one side of the second mounting block 209. In the event of an accident, the copper wire 208 disconnects, causing the second spring 210 to return to its original state. The second spring 210, through the second connecting block 211, causes the first mounting block 207 to rotate around the pin 301. Pulling the arrester body 206 moves the adjusting block 205 away from the bottom of the first connecting block 202, facilitating maintenance. Moving the stop lever 305 aligns it with the pin 301, with one side of the stop lever 305 contacting the pin 301. The stop lever 305 then stretches the third spring 302, causing the third connecting block 304 to extend or retract. Pulling the pull ring of the pin 301 moves it outside the first mounting block 207 and the second connecting block 211, separating them for easy replacement. This arrester utilizes the power frequency short-circuit current to activate the disconnector, achieving automatic disconnection and deactivation. A drop-out arrester is a modified distribution-type zinc oxide arrester installed on the drop-out mechanism of a drop-out fuse. This allows for convenient inspection, maintenance, and replacement of the arrester without power interruption using an insulated operating lever. When a surge arrester malfunctions or fails, the power frequency short-circuit current will cause the trip unit to activate, automatically disconnecting the grounding terminal of the trip unit. This causes the surge arrester components to fall off and be taken out of service, thereby preventing the accident from escalating further and facilitating maintenance.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable surge arrester, comprising a load-insulating support (1); Its features are: Drop structures (2) are installed at both ends of the load insulation support (1); The drop structure (2) includes a first mounting plate (201), a first connecting block (202), a first spring (203), a second mounting plate (204), an adjusting block (205), a surge arrester body (206), a first mounting block (207), a copper wire (208), a second mounting block (209), a second spring (210), a second connecting block (211), and a third mounting plate (212). The bottom end of the first mounting plate (201) is mounted on the top end of the load insulation support (1). The top surface of the first mounting plate (201) is equipped with the first connecting block (202). The top surface of the first connecting block (202) is fixed with the first spring (203). The top end of the first spring (203) is fixed with the second mounting plate (204). An adjusting block (205) is provided at the bottom end of a connecting block (202) on the side away from the first mounting plate (201). A surge arrester body (206) is installed at the bottom of the adjusting block (205). A first mounting block (207) is installed at the bottom of the surge arrester body (206). A copper wire (208) is provided at the bottom of the first mounting block (207). A second mounting block (209) is installed at the end of the copper wire (208) away from the first mounting block (207). A second spring (210) is fixed on one side of the second mounting block (209). A second connecting block (211) is fixed on the side of the second spring (210) away from the second mounting block (209). A third mounting plate (212) is installed at the top of the second mounting block (209). The first mounting block (207) has a disassembly and assembly structure (3) running through its interior.

2. A detachable surge arrester according to claim 1, characterized in that: The top end of the load insulation support (1) is bolted to the first mounting plate (201), and the bottom end of the load insulation support (1) is bolted to the third mounting plate (212).

3. A detachable surge arrester according to claim 1, characterized in that: The first mounting plate (201), the first connecting block (202), and the second mounting plate (204) are connected by a shaft. The first connecting block (202) and the adjusting block (205) are in contact but not connected.

4. A detachable surge arrester according to claim 1, characterized in that: The adjusting block (205) is threadedly connected to the surge arrester body (206), the surge arrester body (206) is threadedly connected to the first mounting block (207), and the surge arrester body (206) is threadedly connected to the copper wire (208).

5. A detachable surge arrester according to claim 1, characterized in that: The first mounting block (207) and the second connecting block (211) are not in contact but connected. The copper wire (208) is connected to the second mounting block (209) by bolts. The second mounting block (209) and the second connecting block (211) are connected by a shaft.

6. A detachable surge arrester according to claim 1, characterized in that: The disassembly and assembly structure (3) includes a pin (301), a third spring (302), a telescopic rod (303), a third connecting block (304), and a stop bar (305). The pin (301) passes through the interior of the first mounting block (207). The third spring (302) is fixed to one side of the pin (301). The telescopic rod (303) passes through the interior of the third spring (302). The third connecting block (304) is fixed to one side of the telescopic rod (303). The stop bar (305) is provided on the outside of the third connecting block (304).

7. A detachable surge arrester according to claim 6, characterized in that: The pin (301) passes through the interior of the second mounting block (209) and does not contact it. The pin (301) is fixedly connected to the telescopic rod (303) on the side away from the third connecting block (304).

8. A detachable surge arrester according to claim 6, characterized in that: The third spring (302) is fixedly connected to the third connecting block (304), and the third connecting block (304) is connected to the stop bar (305) via a shaft.