Lightning protection device for electric power

Abstract

This invention discloses a lightning protection device for power protection, belonging to the technical field of power protection equipment. It includes two clamping semi-rings, each with a semi-ring guide rail fixed to its top and bottom edges. A lightning protection mechanism is slidably installed between the upper and lower semi-ring guide rails. An inner lining plate is fixed inside the clamping semi-rings, and a water-blocking component is fixed to the top of the inner lining plate. A guide semi-ring is also fixed to the top surface of the clamping semi-rings, and a toothed ring is fixedly connected to the top of the guide semi-ring. A locking component is fixedly connected to one end of the lightning protection mechanism near the inner lining plate. The lightning protection mechanism includes a connecting frame with several crossarms riveted to it. An insulator is fixed to the top of the connecting frame, and a gap arrester is fixed to the top of the crossarms. An upper slider is fixedly connected to one end of the connecting frame. This invention is adaptable to different wiring directions, requires no pre-installation based on the site wiring conditions, and facilitates later inspection and maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of power protection equipment, specifically a lightning protection device for power protection. Background Technology

[0002] In overhead power lines, surge arresters are the core lightning protection equipment, mainly used to discharge lightning overvoltages and switching overvoltages on the line, limit the overvoltage amplitude, and thus protect the line insulators, conductors, and related power equipment from lightning damage or insulation breakdown. In 10kV and above distribution lines, zinc oxide surge arresters with external series gaps are widely used in the lightning protection retrofit of overhead insulated conductor lines due to their advantages such as not needing to withstand long-term power frequency voltage, strong ability to withstand single-phase grounding overvoltages, and high operational reliability.

[0003] Currently, traditional lightning arresters are mostly installed on pole clamps or crossarms using fixed brackets. Their installation orientation and angle are prefabricated and fixed, resulting in the following significant drawbacks: Due to significant differences in cable routing direction, phase offset, and angle of the cable tie in the field, prefabricated fixed brackets are difficult to directly adapt. Repeated measurements and positioning are required during installation. If gap deviations or positional interference occur, rework or even scrapping of the bracket is necessary, increasing construction costs and significantly extending power outage time. Furthermore, for double-row cables or multi-circuit scenarios, traditional brackets require separate design of different installation structures, resulting in poor versatility, a wide variety of spare parts, and high inventory and management costs. When repairing or replacing lightning arresters, traditional brackets must be completely disassembled. Workers must operate at height near live cables, which is not only susceptible to cable obstruction and interference, but also presents a safety hazard of accidental contact with live parts. After line modification or cable relocation, fixed brackets cannot be adjusted with the cable orientation and must be removed and replaced, further increasing maintenance costs and power outage time. Summary of the Invention

[0004] This invention provides a lightning protection device for power protection, which can solve the technical problems of traditional fixed lightning protection devices, which have poor adaptability, low installation and commissioning efficiency, inconvenient operation and maintenance and replacement, and insufficient versatility because the installation position, angle and gap distance are all prefabricated and fixed.

[0005] A lightning protection device for power protection includes two clamping semi-rings. The top and bottom edges of the clamping semi-rings are fixed with semi-ring guide rails, and a lightning protection mechanism is slidably installed between the upper and lower semi-ring guide rails. An inner lining plate is fixed inside the clamping semi-rings, and a water-blocking component is fixed on the top of the inner lining plate. A guide semi-ring is also fixed on the top surface of the clamping semi-rings, and a toothed ring is fixedly connected to the top of the guide semi-ring. A locking component is fixedly connected to one end of the lightning protection mechanism near the inner lining plate.

[0006] As a further technical solution of the present invention, each of the joints of the semi-circular guide rails is fixed with a mating plate, and a mating bolt is threaded through the two mating plates. The external thread of the mating bolt is connected with an anti-loosening nut.

[0007] As a further technical solution of the present invention, the lightning protection mechanism includes a connecting frame, a plurality of crossarms are riveted on the connecting frame, and an insulator is fixed on the top of the connecting frame. A gap arrester is fixed on the top of the crossarms. An upper slider is fixedly connected to one end of the connecting frame, and a lower slider is connected to the bottom of the upper slider through a connecting block. A reinforcing crossbar is fixedly connected between one side of the lower slider and the connecting frame.

[0008] As a further technical solution of the present invention, the upper slider is slidably connected to the upper semi-circular guide rail, the lower slider is slidably connected to the lower semi-circular guide rail, the reinforcing crossbar is installed at an angle, and its two ends are fixed to the connecting frame and the lower slider respectively by bolts. A fixing seat that connects with the reinforcing crossbar is provided on one side of the lower slider.

[0009] As a further technical solution of the present invention, the two sides of the semi-circular guide rail are concave, and the inner sides of the upper slider and the lower slider are rotatably mounted with rollers that contact the concave part of the semi-circular guide rail.

[0010] As a further technical solution of the present invention, the water-blocking assembly includes a connecting ring plate, and a baffle plate is fixedly installed on the top of the connecting ring plate.

[0011] As a further technical solution of the present invention, the connecting ring plate is semi-circular, and its bottom surface is fixedly connected to the top of the inner lining plate on the corresponding side. The top surface of the shielding plate is inclined, and it is inclined along the middle towards the outside of the clamping half ring.

[0012] As a further technical solution of the present invention, the locking assembly includes a horizontal plate, an adjusting screw is internally threaded to the horizontal plate, an adjusting plate is fixed to the top of the adjusting screw, and a pressing block is provided at the bottom of the adjusting screw. A toothed plate is fixedly connected to the bottom of the pressing block, and two guide rollers are rotatably connected to the bottom of the horizontal plate. The two guide rollers are respectively located on both sides of the pressing block.

[0013] As a further technical solution of the present invention, a planar bearing is embedded in the top of the clamping block, and the bottom end of the adjusting screw is fixed to the bearing of the planar bearing. The adjusting screw is rotatably connected to the clamping block through the planar bearing.

[0014] As a further technical solution of the present invention, the two guide rollers are respectively attached to both sides of the guide semi-ring, the horizontal plate is fixedly connected to one end of the connecting frame, and the toothed plate is set at the position directly above the toothed ring and can mesh with the toothed ring. The beneficial effects of this invention are: This invention uses a semi-circular guide rail in conjunction with a lightning protection mechanism. The connecting frame slides on the surface of the semi-circular guide rail via upper and lower sliders, which can adjust the tilt angle of the insulator and the gap arrester. After the semi-circle is clamped and fixed to the pole, the orientation of the insulator and the gap arrester can be adjusted according to the cable routing, so that it can be installed to match the cable routing direction. There is no need to prefabricate the installation structure according to the cable routing direction, which avoids the installation structure being fixed and prone to errors after installation, requiring repeated disassembly and assembly operations. This makes the installation of the entire lightning protection device more convenient. Furthermore, since the upper and lower sliders slide on the surface of the semi-circular guide rail, when the insulators and gap arresters need to be maintained and replaced, the connecting frame and crossarm can be moved to the position below the cable for replacement and maintenance operations, thus avoiding interference from the presence of the cable on the replacement and maintenance operations. By setting a locking component, as the upper slider slides, the guide roller at the bottom of the horizontal plate also slides against the surface of the guide semi-ring, adapting to the position change of the upper slider. The toothed plate is always located directly above the toothed ring. After the upper slider moves to the designated position, the adjusting plate is rotated to drive the pressing block to move down, thereby driving the toothed plate to mesh with the toothed ring, thus locking the position of the horizontal plate. The position of the upper slider is also fixed, which can prevent the insulator and the gap arrester from shifting after the installation position is determined. By setting up a water-blocking component and increasing the height of the baffle plate by connecting the ring plate, the movement of the upper and lower sliders will not be interfered with. The baffle plate uses its top slope to guide rainwater, preventing rainwater from entering the gap between the top surface of the clamping half-ring and the half-ring guide rail. This effectively protects the half-ring guide rail, as well as the toothed ring and toothed plate, avoiding long-term exposure that could affect its service life. Attached Figure Description To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an assembly structure diagram of the lightning protection mechanism in this invention; Figure 3 This is a structural diagram of the lightning protection mechanism in this invention; Figure 4 This is a structural diagram of the semi-circular guide rail in this invention; Figure 5 This is a front view of the water-blocking component in this invention; Figure 6 This is the front view of the locking component in this invention.

[0016] In the diagram: 1. Clamping half-ring; 2. Half-ring guide rail; 3. Lightning protection mechanism; 31. Connecting frame; 32. Crossarm; 33. Insulator; 34. Gap arrester; 35. Upper slider; 36. Lower slider; 37. Reinforcing crossbar; 4. Water-blocking assembly; 41. Connecting ring plate; 42. Baffle plate; 5. Inner lining plate; 6. Guide half-ring; 7. Toothed ring; 8. Locking assembly; 81. Cross plate; 82. Adjusting screw; 83. Adjusting plate; 84. Pressing block; 85. Toothed plate; 86. Guide roller. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figure 1 - Figure 6 As shown, a lightning protection device for power protection includes two clamping semi-rings 1. The top and bottom edges of the clamping semi-rings 1 are fixed with semi-ring guide rails 2, and a lightning protection mechanism 3 is slidably installed between the upper and lower semi-ring guide rails 2. An inner lining plate 5 is fixed inside the clamping semi-rings 1, and a water-blocking component 4 is fixed on the top of the inner lining plate 5. A guide semi-ring 6 is also fixed on the top surface of the clamping semi-rings 1, and a toothed ring 7 is fixedly connected to the top of the guide semi-ring 6. A locking component 8 is fixedly connected to one end of the lightning protection mechanism 3 near the inner lining plate 5.

[0019] Each joint of the semi-circular guide rail 2 is fixed with a mating plate, and a mating bolt is threaded through the two mating plates. The external thread of the mating bolt is connected with an anti-loosening nut.

[0020] Specifically, two clamping semi-rings 1 are clamped to the outside of the pole, the inner lining plate 5 is in contact with the pole, and the semi-ring guide rails 2 on both sides are connected. After the two connecting plates are connected, they are fixed to the outside of the pole by bolts and anti-loosening nuts, thus realizing the installation.

[0021] The lightning protection mechanism 3 includes a connecting frame 31, on which several crossarms 32 are riveted. An insulator 33 is fixed to the top of the connecting frame 31, and a gap arrester 34 is fixed to the top of the crossarms 32. An upper slider 35 is fixedly connected to one end of the connecting frame 31, and a lower slider 36 is connected to the bottom of the upper slider 35 via a connecting block. A reinforcing crossbar 37 is fixedly connected to one side of the lower slider 36 and the connecting frame 31. The upper slider 35 is slidably connected to the upper semi-circular guide rail 2, and the lower slider 36 is slidably connected to the lower semi-circular guide rail 2. The reinforcing crossbar 37 is installed at an angle, and its two ends are fixed to the connecting frame 31 and the lower slider 36 respectively by bolts. A fixing seat is provided on one side of the lower slider 36 to mate with the reinforcing crossbar 37. The two sides of the semi-circular guide rail 2 are concave, and rollers that rotatably contact the concave parts of the semi-circular guide rail 2 are installed on both sides of the upper slider 35 and the lower slider 36.

[0022] Specifically, the connecting frame 31 can be adjusted in position by sliding the upper slider 35 and the lower slider 36 on the surface of the corresponding semi-circular guide rail 2 to adapt to the cable routing direction. The insulator 33 and the gap surge arrester 34 are fixed to the cable to achieve the lightning protection effect. The reinforcing crossbar 37 is added to support the bottom of the connecting frame 31 so that it can maintain good stability after being moved or fixed and avoid shaking.

[0023] The water-blocking assembly 4 includes a connecting ring plate 41, and a baffle plate 42 is fixedly installed on the top of the connecting ring plate 41. The connecting ring plate 41 is semi-circular, and its bottom surface is fixedly connected to the top of the inner lining plate 5 on the corresponding side. The top surface of the baffle plate 42 is inclined, and it is inclined along the middle towards the outside of the clamping semi-ring 1.

[0024] Specifically, the connecting ring plate 41 is fixed to the top of the inner liner plate 5, increasing the height of the shielding plate 42. The shielding plate 42 shields the upper part of the toothed ring 7 and the semi-ring guide rail 2, preventing rainwater from entering the top of the clamping semi-ring 1. Furthermore, by increasing the height through the connecting ring plate 41, it will not interfere with the movement of the upper slider 35 and the lower slider 36.

[0025] The locking assembly 8 includes a horizontal plate 81, with an adjusting screw 82 internally threaded onto the horizontal plate 81. An adjusting plate 83 is fixed to the top of the adjusting screw 82, and a pressing block 84 is located at the bottom of the adjusting screw 82. A toothed plate 85 is fixedly connected to the bottom of the pressing block 84. Two guide rollers 86 are rotatably connected to the bottom of the horizontal plate 81, located on opposite sides of the pressing block 84. A planar bearing is embedded in the top of the pressing block 84, and the bottom of the adjusting screw 82 is fixed to the planar bearing, allowing the adjusting screw 82 to rotatably connect to the pressing block 84 via the planar bearing. The two guide rollers 86 are respectively attached to both sides of the guide semi-ring 6. The horizontal plate 81 is fixedly connected to one end of the connecting frame 31, and the toothed plate 85 is positioned directly above the toothed ring 7 and can mesh with it.

[0026] Specifically, by rotating the adjusting plate 83, the adjusting screw 82 can be moved up and down, thereby controlling the toothed plate 85 to disengage from and lock with the toothed ring 7, thus realizing the locking and unlocking operation of the upper slider 35. When the upper slider 35 slides, through the connection of the horizontal plate 81, the guide roller 86 at its bottom also slides against the surface of the guide half ring 6, thus the position of the toothed plate 85 can be adjusted in real time according to the position change of the upper slider 35.

[0027] This invention discloses a lightning arrester for power protection. In use, the entire lightning arrester is installed by fixing two clamping half-rings 1 to the power pole. The two clamping half-rings 1 are respectively clamped to both sides of the power pole and connected together. The inner lining plate 5 is in contact with the power pole, and the half-ring guide rails 2 on both sides are connected. After the two connecting plates are connected, they are fixed to the outside of the power pole by bolts and anti-loosening nuts, thus achieving installation. Alternatively, through screw holes can be opened on both sides of the clamping half-rings 1 to add fixing screws for connecting and fixing the two clamping half-rings 1.

[0028] After the two clamping semi-rings 1 are fixed to the pole, the angle of the lightning protection mechanism 3 can be adjusted according to the cable routing direction to ensure it is aligned vertically with the cable routing direction. During adjustment, the upper slider 35 slides on the surface of the upper semi-ring guide rail 2. Since the bottom of the upper slider 35 is connected to the lower slider 36 via a connecting block, as the upper slider 35 slides, the lower slider 36 also slides on the corresponding lower semi-ring guide rail 2 surface, thereby adjusting the position of the entire connecting frame 31. This allows each insulator 33 and gap arrester 34 to be adapted to the cable routing direction, facilitating connection. After the insulator 33 and gap arrester 34 are connected to the cable, the gap arrester 34 is grounded, thus achieving lightning protection for the cable.

[0029] As the upper slider 35 slides, the locking assembly 8 connected to it also moves. The guide roller 86 at the bottom of the horizontal plate 81 slides against the surface of the guide half ring 6 to adapt to the position change of the upper slider 35. The toothed plate 85 is always located directly above the toothed ring 7. After the upper slider 35 moves to the designated position, the adjusting plate 83 is rotated to drive the pressing block 84 to move down, thereby driving the toothed plate 85 to mesh with the toothed ring 7, thereby locking the position of the horizontal plate 81. The position of the upper slider 35 is also fixed, thus fixing the installation position of the gap arrester 34 and the insulator 33.

[0030] A connecting ring plate 41 is fixed to the top of the inner liner plate 5 to increase the height of the shield plate 42. The shield plate 42 shields the upper part of the toothed ring 7 and the semi-ring guide rail 2 to prevent rainwater from entering the top of the clamping semi-ring 1. The increased height by the connecting ring plate 41 will not interfere with the movement of the upper slider 35 and the lower slider 36. The shield plate 42 uses its top slope to guide rainwater and prevent rainwater from entering the gap between the top surface of the clamping semi-ring 1 and the semi-ring guide rail 2, effectively protecting the semi-ring guide rail 2, the toothed ring 7 and the toothed plate 85.

[0031] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. Lightning arrester for electric power protection, comprising two clamping half-rings (1), characterized in that, The top and bottom edges of the clamping half ring (1) are fixed with half ring guide rails (2), and a lightning protection mechanism (3) is slidably installed between the upper and lower half ring guide rails (2). The inside of the clamping half ring (1) is fixed with an inner liner plate (5), and a water-blocking component (4) is fixed on the top of the inner liner plate (5). The top surface of the clamping half ring (1) is also fixed with a guide half ring (6), and a toothed ring (7) is fixedly connected to the top of the guide half ring (6). A locking component (8) is fixedly connected to one end of the lightning protection mechanism (3) near the inner liner plate (5).

2. The lightning protection device for electric power according to claim 1, wherein Both of the two semi-circular guide rails (2) are fixed with mating plates, and mating bolts are threaded through the two mating plates. Anti-loosening nuts are connected to the external threads of the mating bolts.

3. The lightning protection device for electric power according to claim 1, wherein The lightning protection mechanism (3) includes a connecting frame (31), several crossarms (32) are riveted to the connecting frame (31), and an insulator (33) is fixed to the top of the connecting frame (31). A gap arrester (34) is fixed to the top of the crossarms (32). An upper slider (35) is fixedly connected to one end of the connecting frame (31), and a lower slider (36) is connected to the bottom of the upper slider (35) through a connecting block. A reinforcing crossbar (37) is fixedly connected between one side of the lower slider (36) and the connecting frame (31).

4. The lightning protection device for electric power according to claim 3, wherein The upper slider (35) is slidably connected to the upper semi-circular guide rail (2), and the lower slider (36) is slidably connected to the lower semi-circular guide rail (2). The reinforcing crossbar (37) is installed at an angle, and its two ends are fixed to the connecting frame (31) and the lower slider (36) respectively by bolts. A fixing seat that connects with the reinforcing crossbar (37) is provided on one side of the lower slider (36).

5. The lightning protection device for electric power according to claim 3, wherein The two sides of the semi-circular guide rail (2) are concave, and the upper slider (35) and the lower slider (36) are rotatably mounted with rollers that contact the concave part of the semi-circular guide rail (2) on both sides.

6. The lightning protection device for electric power according to claim 3, wherein The water-blocking assembly (4) includes a connecting ring plate (41), and a baffle plate (42) is fixedly installed on the top of the connecting ring plate (41).

7. The lightning protection device for electric power according to claim 6, wherein The connecting ring plate (41) is semi-circular, and its bottom surface is fixedly connected to the top of the inner lining plate (5) on the corresponding side. The top surface of the shielding plate (42) is inclined, and it is inclined along the middle towards the outside of the clamping half ring (1).

8. The lightning protection device for power protection according to claim 7, characterized in that, The locking assembly (8) includes a horizontal plate (81), an adjusting screw (82) is connected to the inside of the horizontal plate (81) by a thread, an adjusting plate (83) is fixed to the top of the adjusting screw (82), and a pressing block (84) is provided at the bottom of the adjusting screw (82). A toothed plate (85) is fixedly connected to the bottom of the pressing block (84), and two guide rollers (86) are rotatably connected to the bottom of the horizontal plate (81). The two guide rollers (86) are located on both sides of the pressing block (84).

9. The lightning protection device for electric power according to claim 8, wherein The top of the clamping block (84) is fitted with a flat bearing, and the bottom end of the adjusting screw (82) is fixed to the bearing of the flat bearing. The adjusting screw (82) is rotatably connected to the clamping block (84) through the flat bearing.

10. The lightning protection device for power protection according to claim 8, characterized in that, The two guide rollers (86) are respectively attached to both sides of the guide half ring (6), the horizontal plate (81) is fixedly connected to one end of the connecting frame (31), and the toothed plate (85) is set directly above the toothed ring (7) and can mesh with the toothed ring (7).

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