Lightning protection device for overhead line of power distribution network

Abstract

The utility model relates to a lightning protection device for an overhead line of a power distribution network, which is applied to the technical field of lightning protection of an electric power system, and realizes that floating objects in the air can be blown to the vicinity of a lightning protection insulator when encountering strong wind, the floating objects can be shielded and protected by a protective cover, and an L-shaped steel rod is blown by the power of wind to rotate in an annular groove, so that the lightning protection effect is realized. The L-shaped steel rod is sleeved on the rolling wheel, and the rolling wheel can easily and quickly roll in the annular groove through wind power, so that the resistance of the L-shaped steel rod is reduced to accelerate the rotation of the L-shaped steel rod, and when the L-shaped steel rod rotates on the surface of the lightning protection insulator, the approaching floating objects can be scraped away to avoid approaching the second clamping hoop; the L-shaped steel rod can rotate slowly in a gentle breeze state at ordinary times, birds can be prevented from approaching and staying on the lightning protection insulator, and the electric wire is located above the L-shaped steel rod and penetrates through the wire hole, so that the electric wire is not affected during rotation of the L-shaped steel rod, and the effect of preventing the lightning protection assembly from being damaged is effectively achieved.

Description

Technical Field

[0001] The utility model relates to a lightning protection device for overhead lines of a distribution network, and in particular to a lightning protection device for overhead lines of a distribution network applied in the technical field of lightning protection of power systems. Background Art

[0002] Overhead lines are an important part of the power system. With the development of the power system, the number of overhead line construction projects has gradually increased, and the number of accidents caused by lightning strikes on overhead lines has also increased, which not only affects the normal operation of equipment, but also greatly affects daily production and life. How to prevent and reduce the damage caused by lightning strikes on overhead lines to the power grid is a key issue that must be considered for the safe and stable operation of the power grid.

[0003] The specification of Chinese patent CN215733366U discloses a lightning protection device for overhead lines, including an insulator body, an insulating conductor, a first insulating protective sleeve and a first arc-shaped sheet, the front of the second insulating protective sleeve is fixedly connected with a fixing rod, the upper surface of the first arc-shaped sheet abuts against the second arc-shaped sheet, the back of the first connecting ring abuts against the second connecting ring, and a limiting ring is arranged inside the fixing ring. The utility model is provided with a fixing rod, a through groove, a groove, a top block and a limiting block, and the mechanism can make the disassembly and separation of the first insulating protective sleeve and the second insulating protective sleeve more convenient, so that the operator can more easily complete the disassembly work, and by providing a fixing ring, a limiting ring, a first connecting ring, a second connecting ring and an anti-slip groove, the mechanism can make the disassembly and separation of the first arc-shaped sheet and the second arc-shaped sheet more rapid, simplify the operation steps, and thus facilitate the operator to inspect and replace the two later.

[0004] The existing lightning protection devices for overhead lines are generally installed on the upper part of the electric poles. The lightning protection components in most of the devices are always exposed to the air, which makes the lightning protection components vulnerable to damage. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that the existing lightning protection devices for overhead lines are generally installed on the upper part of the electric poles, and the lightning protection components in most devices are always exposed to the air, making the lightning protection components vulnerable to damage.

[0006] In order to solve the above problems, the utility model provides a lightning protection device for overhead lines of a distribution network, including an electric pole, a mounting frame is installed on the electric pole, lightning protection insulators are symmetrically fixedly connected on both sides of the top of the mounting frame, a protective component is provided on the outer sleeve of the lightning protection insulator, the protective component includes a protective cover sleeved on the outside of the second clamp, and the protective cover is fixed to the mounting frame by a first bolt, a collar is sleeved on the upper side wall of the lightning protection insulator, an annular groove is chiseled on the side wall of the collar, an L-shaped steel rod is rotatably connected in the annular groove, sliding grooves are symmetrically chiseled at the upper and lower ends of the annular groove, a slider is slidably connected between the two sliding grooves, a roller is sleeved on the slider, and the roller conflicts with the annular groove, one end of the L-shaped steel rod close to the annular groove is sleeved on the surface of the slider in the middle of the roller, wire holes are symmetrically chiseled on the surface of the lightning protection insulator above the collar, an electric wire is installed on the top of the second clamp, and the electric wire passes through the wire hole through the side wall of the lightning protection insulator.

[0007] In the above-mentioned lightning protection device, the effect of preventing the lightning protection components from being damaged is effectively achieved.

[0008] As a further improvement of the present application, a connecting buckle is fixedly connected to the top of the lightning protection insulator, and a reinforcement rod is detachably connected between the two connecting buckles via a locking buckle.

[0009] As a further improvement of the present application, the side wall of the utility pole is fixedly connected to a limit buckle, and the reinforcement rod passes through the limit buckle and fits therewith.

[0010] As a further improvement of the present application, a first clamp and a second clamp are sleeved on the surface of the utility pole, and a side end of the mounting frame is fixedly connected to the second clamp.

[0011] As another improvement of the present application, a support frame is symmetrically fixedly connected to the bottom end of the mounting frame, and the bottom end of the support frame is fixedly connected to the side wall of the first clamp.

[0012] As another improved supplement of the present application, the first clamp and the second clamp are both composed of two semicircular grooves, and a fixing plate is symmetrically fixedly connected at the cross section of the semicircular groove, and the two semicircular grooves are threadedly fixed to the fixing plate through a second bolt.

[0013] As another improved supplement of the present application, the protective component and the reinforcement rod are both made of insulating materials, and the reinforcement rod is made of inelastic material.

[0014] To sum up, this scheme can be realized. Since the lightning protection insulator is located in the sky, when encountering strong winds, floating objects in the air may be blown to the vicinity of the lightning protection insulator. The protective cover can be used to shield and protect it, and the L-shaped steel rod is blown by the power of the wind, so that the L-shaped steel rod rotates in the annular groove, and the L-shaped steel rod is sleeved on the roller. The roller can easily and quickly roll in the annular groove by the wind, thereby reducing the resistance of the L-shaped steel rod and accelerating the rotation of the L-shaped steel rod. When the L-shaped steel rod rotates on the surface of the lightning protection insulator, the approaching floating objects can be blown away to avoid approaching the second clamp, and the L-shaped steel rod can also rotate slowly in the normal breeze state to prevent birds from approaching and staying on the lightning protection insulator, and the wires are located above the L-shaped steel rod and pass through the wire hole, so the wires are not affected in any way during the rotation of the L-shaped steel rod, effectively achieving the effect of preventing the lightning protection component from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram of the installation structure of the lightning protection device of the first and second embodiments of the present application;

[0016] Figure 2 This is a structural diagram of the protection assembly of the first and second implementation modes of the present application;

[0017] Figure 3 For this application Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is an axonometric view of the protective cover of the first embodiment of the present application;

[0019] Figure 5 For this application Figure 4 Enlarged view of point B in the middle;

[0020] Figure 6 This is a structural diagram of a lightning protection insulator installation according to a second embodiment of the present application;

[0021] Figure 7 For this application Figure 6 Enlarged view of center C.

[0022] Description of the numbers in the figure:

[0023] 1. Electric pole; 2. First clamp; 3. Support frame; 4. Second clamp; 5. Lightning insulator; 6. Protective cover; 7. First bolt; 8. Electric wire; 9. Reinforcement rod; 10. Limit buckle; 11. Mounting frame; 12. L-shaped steel rod; 13. Ring; 14. Connecting buckle; 15. Lock buckle; 16. Annular groove; 17. Wire hole; 18. Roller; 19. Slide groove; 20. Slider; 21. Second bolt; 22. Fixing plate. DETAILED DESCRIPTION

[0024] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0025] The first implementation method:

[0026] Figure 1-5 A lightning protection device for an overhead line of a power distribution network is shown, comprising a power pole 1, a mounting frame 11 is mounted on the power pole 1, lightning protection insulators 5 are symmetrically fixedly connected to the top of the mounting frame 11 on both sides, a protective assembly is provided on the outer cover of the lightning protection insulator 5, the protective assembly includes a protective cover 6 sleeved on the outer side of a second clamp 4, and the protective cover 6 is fixed to the mounting frame 11 by a first bolt 7, a collar 13 is sleeved on the upper side wall of the lightning protection insulator 5, an annular groove 16 is cut on the side wall of the collar 13, and an L-shaped The steel rod 12 has symmetrical grooves 19 at the upper and lower ends of the annular groove 16, and a slider 20 is slidably connected between the two grooves 19. A roller 18 is sleeved on the slider 20, and the roller 18 is in conflict with the annular groove 16. The end of the L-shaped steel rod 12 close to the annular groove 16 is sleeved on the surface of the slider 20 in the middle of the roller 18. The surface of the lightning insulator 5 located above the ring 13 is symmetrically bored with wire holes 17. The top of the second clamp 4 is installed with an electric wire 8, and the electric wire 8 passes through the side wall of the lightning insulator 5 through the wire hole 17.

[0027] The present solution can be realized. Since the lightning protection insulator 5 is located in the sky, when encountering strong winds, floating objects in the air may be blown to the vicinity of the lightning protection insulator 5. The protective cover 6 can be used to shield and protect them, and the L-shaped steel rod 12 is blown by the power of the wind, so that the L-shaped steel rod 12 rotates in the annular groove 16, and the L-shaped steel rod 12 is sleeved on the roller 18. The roller 18 can roll easily and quickly in the annular groove 16 by the wind, thereby reducing the resistance of the L-shaped steel rod 12 and accelerating the rotation of the L-shaped steel rod 12. When the L-shaped steel rod 12 rotates on the surface of the lightning protection insulator 5, the approaching floating objects can be blown away to avoid approaching the second clamp 4, and the L-shaped steel rod 12 can also rotate slowly in the normal breeze state to prevent birds from approaching and staying on the lightning protection insulator 5, and the wire 8 is located above the L-shaped steel rod 12 and passes through the wire hole 17. Therefore, the wire 8 is not affected in any way during the rotation of the L-shaped steel rod 12, and the effect of effectively preventing the lightning protection component from being damaged is achieved.

[0028] The second implementation method:

[0029] Figure 1-3 and Figure 6-7It is shown that a connecting buckle 14 is fixedly connected to the top of the lightning protection insulator 5, and a reinforcement rod 9 is detachably connected between the two connecting buckles 14 through a lock buckle 15. A limiting buckle 10 is fixedly connected to the side wall of the electric pole 1, and the reinforcement rod 9 passes through the limiting buckle 10 and fits with it. A first clamp 2 and a second clamp 4 are sleeved on the surface of the electric pole 1, and the side end of the mounting frame 11 is fixedly connected to the second clamp 4. The bottom end of the mounting frame 11 is symmetrically fixedly connected to a support frame 3, and the bottom end of the support frame 3 is fixedly connected to the side wall of the first clamp 2. The first clamp 2 and the second clamp 4 are both composed of two semicircular grooves, and a fixing plate 22 is symmetrically fixedly connected at the cross section of the semicircular groove, and the two semicircular grooves are threadedly fixed and spliced ​​with the fixing plate 22 by a second bolt 21. The protective component and the reinforcement rod 9 are both made of insulating material, and the reinforcement rod 9 is made of inelastic material.

[0030] This solution can be achieved. When installing the lightning insulator 5, the mounting frame 11 fixedly connected to the lightning insulator 5 can be clamped on the electric pole 1 through the second clamp 4 and the first clamp 2, and then threadedly fixed by the second bolt 21, so as to install the mounting frame 11, and can be reinforced and balanced by the support frames 3 on both sides, so as to achieve the purpose of quick and convenient installation, and then the protective cover 6 is put on the outside of the lightning insulator 5 and fixed to the mounting frame 11. At this time, the limit buckle 10 with the reinforcement rod 9 is fixed to the surface of the electric pole 1, and then the two ends of the reinforcement rod 9 are fixed by the lock buckle 15 and the connecting buckle 14, so as to connect the two protective covers 6, increase the force points for reinforcement, and avoid the effect of shaking.

[0031] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A lightning protection device for an overhead line of a power distribution network, comprising a power pole (1), characterized in that: The utility pole (1) is provided with a mounting frame (11), and lightning protection insulators (5) are symmetrically fixedly connected to both sides of the top of the mounting frame (11). The outer cover of the lightning protection insulator (5) is provided with a protective component, and the protective component includes a protective cover (6) sleeved on the outside of the second clamp (4), and the protective cover (6) is fixed to the mounting frame (11) by a first bolt (7). A collar (13) is sleeved on the upper side wall of the lightning protection insulator (5), and an annular groove (16) is cut on the side wall of the collar (13), and an L-shaped steel rod (12) is rotatably connected in the annular groove (16). The annular groove (16) Slide grooves (19) are symmetrically opened at the upper and lower ends of the inner portion, a slider (20) is slidably connected between the two slide grooves (19), a roller (18) is sleeved on the slider (20), and the roller (18) is in conflict with the annular groove (16), one end of the L-shaped steel rod (12) close to the annular groove (16) is sleeved on the surface of the slider (20) in the middle of the roller (18), and wire holes (17) are symmetrically opened on the surface of the lightning protection insulator (5) located above the ring (13), an electric wire (8) is installed at the top of the second clamp (4), and the electric wire (8) passes through the side wall of the lightning protection insulator (5) through the wire hole (17).

2. A lightning protection device for overhead lines of a power distribution network according to claim 1, characterized in that: A connecting buckle (14) is fixedly connected to the top of the lightning protection insulator (5), and a reinforcing rod (9) is detachably connected between two connecting buckles (14) via a locking buckle (15).

3. A lightning protection device for overhead lines of a power distribution network according to claim 2, characterized in that: The side wall of the electric pole (1) is fixedly connected to a limit buckle (10), and the reinforcement rod (9) passes through the limit buckle (10) and fits therewith.

4. The lightning protection device for overhead lines of a power distribution network according to claim 1, characterized in that: The surface of the electric pole (1) is sleeved with a first clamp (2) and a second clamp (4), and the side end of the mounting frame (11) is fixedly connected to the second clamp (4).

5. The lightning protection device for overhead lines of a power distribution network according to claim 1, characterized in that: The bottom end of the mounting frame (11) is symmetrically fixedly connected to a support frame (3), and the bottom end of the support frame (3) is fixedly connected to a side wall of the first clamp (2).

6. A lightning protection device for overhead lines of a power distribution network according to claim 4, characterized in that: The first clamp (2) and the second clamp (4) are both composed of two semicircular grooves, and a fixing plate (22) is symmetrically fixedly connected to the cross section of the semicircular groove, and the two semicircular grooves are threadedly fixedly spliced ​​with the fixing plate (22) via a second bolt (21).

7. The lightning protection device for overhead lines of a power distribution network according to claim 1, characterized in that: The protective component and the reinforcement rod (9) are both made of insulating materials, and the reinforcement rod (9) is made of inelastic material.

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