Multi-cavity lightning arrester for electric power facilities

Abstract

The invention relates to the technical field of electric power facility lightning protection, in particular to a multi-cavity type electric power facility lightning arrester which comprises a fastening hoop located on an electric power facility, cross arms arranged on the two sides of the fastening hoop, porcelain insulators arranged above the two ends of the cross arms, wiring blocks arranged at the upper ends of the porcelain insulators, and cable bodies arranged on the wiring blocks in a penetrating mode. A second nut is arranged at the lower end of the porcelain insulator, a second electrode supporting frame is arranged in the middle of the second nut, a first electrode supporting frame is arranged on one side of the second electrode supporting frame, and a lightning arrester body is arranged at the lower end of the first electrode supporting frame; the lightning arrester body comprises a top plate arranged at the upper end, an insulator arranged at the lower end of the top plate and a bottom plate arranged at the lower end of the insulator, and an insulating rod is arranged at the lower end of the bottom plate and connected to one side of the supporting rod; the lightning arrester has the advantages that the lightning arrester is convenient to mount, dismount and mount, the insulator can be driven to be replaced, the service life of the lightning arrester is effectively prolonged, and the lightning protection effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of lightning protection for electric power facilities, in particular to a multi-cavity lightning protection device for electric power facilities. Background Art

[0002] In recent years, the application of multi-cavity line arresters has gradually been promoted and popularized. This new type of arrester using air as the insulating medium is favored by power system operation and maintenance units for its excellent characteristics such as simple materials, large current capacity, no heat accumulation effect, no need for operation and maintenance, and long service life.

[0003] Currently, the most widely used type of lightning arrester on the market is the pure air gap multi-chamber gap arrester without insulating support. The pure air gap without insulating support requires on-site construction personnel to be equipped with measuring tools, which are adjusted through the coordination of on-site wires, insulator types, and installation hardware. In addition, the gap distance control process is relatively complicated, which increases the difficulty of operation for construction personnel and reduces the efficiency and quality of installation and construction. At the same time, combined with the on-site technical requirements of the operation and maintenance personnel, when the lightning arrester fails, it is necessary to shut down the power for maintenance or replace the insulator, and the construction period is relatively long.

[0004] Therefore, in order to solve the above problems, we propose a multi-cavity lightning protection device for power facilities. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a multi-cavity lightning arrester for electric power facilities which is easy to install and disassemble, can drive the replacement of insulators, effectively prolongs the service life of the lightning arrester, and has a better lightning protection effect, thereby solving the problems raised in the background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-cavity lightning protection device for electric power facilities, comprising a fastening clamp on a position electric power facility, cross arms are arranged on both sides of the fastening clamp, insulating porcelain bottles for installing and fixing cables and lightning arrester bodies for lightning protection are arranged on both sides of the cross arms, a wiring block is arranged on the upper end of the insulating porcelain bottle, a cable body is inserted on the wiring block, a second nut is arranged on the lower end of the insulating porcelain bottle, a second electrode support frame is arranged in the middle of the second nut, an insulating rod is arranged at the lower end of the lightning arrester body, a bottom plate is arranged on the upper end of the insulating rod, a plurality of insulators are arranged on the upper end of the bottom plate, a top plate is arranged on the upper end of the insulator, a first nut is arranged on the upper end of the top plate, a first electrode support frame is arranged in the middle of the first nut, and electrode balls are arranged on the first electrode support frame and the second electrode support frame.

[0007] Preferably, the cross arm is a U-shaped structure made of a composite insulating material, and the cross arm includes mounting seats arranged on both sides of the fastening clamp and a support rod embedded in the upper end of the mounting seat.

[0008] Preferably, the support rod includes a fixing groove and bolt holes symmetrically arranged at the upper and lower ends of the fixing groove, a limiting groove is arranged at the upper end of the mounting seat, the support rod is slidably arranged in the limiting groove, and bolt columns are threadedly inserted on the mounting seat and the support rod.

[0009] Preferably, connecting plates are fixedly provided on both sides of the support rod through bolt holes and fixing grooves, the insulating porcelain bottle is arranged at the upper end of the connecting plate, the insulating rod is arranged on one side of the connecting plate, and a grounding block is also arranged on one side of the insulating rod.

[0010] Preferably, the upper terminal block of the insulating porcelain bottle includes a rotating member, a terminal groove arranged at the lower end of the rotating member, and a clamping plate arranged in the terminal groove and threadedly connected to the rotating member.

[0011] Preferably, a first thread groove is provided in the rotating member, a first thread column is fixed on the inner side in the middle of the first thread groove, a second thread column is provided on the upper end of the clamping plate, and a second thread groove is provided in the middle of the second thread column.

[0012] Preferably, the second thread column is threadably embedded in the first thread groove, and the inner side of the first thread column is disposed in the second thread groove.

[0013] Preferably, an insulating ring is provided at the upper end of the insulating rod, the arrester body is provided at one end of the insulating rod close to the grounding block, and the arrester body is composed of a top plate and a bottom plate provided at the upper and lower ends, and a plurality of insulators provided between the top plate and the bottom plate.

[0014] Preferably, a plurality of top fixing sleeves are provided at the lower end of the top plate, fixing threaded holes are provided on the inner side of the top fixing sleeves, a bottom fixing sleeve is provided at the upper end of the bottom plate, and a spring is provided inside the bottom plate to enable the bottom fixing sleeve to extend and retract inside the bottom plate for installing and removing insulators.

[0015] Preferably, a first nut is provided on the upper end of the top plate, the first electrode support frame is provided in the middle of the first nut, a lightning rod is also fixedly provided on the first nut at the top end of the arrester body, and a lightning inductor is provided at the top end of the lightning rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention installs the device at an appropriate position of the power facility by tightening the clamp or the cross arm, and through the insulating porcelain bottles provided at the upper ends of both sides of the support rod of the cross arm, the cable body is erected and fixed through the wiring block provided at the upper end of the insulating porcelain bottle, and is connected to the ground wire through the grounding block connected to the insulating rod on one side of the support rod, and the insulating rod is conducive to the normal operation of the insulating porcelain bottle and the lightning arrester body, and the second electrode support frame provided at the lower end of the insulating porcelain bottle cooperates with the first electrode support frame provided at the upper end of the lightning arrester body, so that the electrode balls provided on the first electrode support frame and the second electrode support frame can adjust the distance between the two electrode balls by adjusting the angle of the first electrode support frame and the second electrode support frame, so that there is a certain gap between the two electrode balls, achieving the effect of flexibly adjusting the gap between the two electrode balls, and utilizing this series gap to make the lightning protection effect of the lightning protection mechanism better, so that the lightning protection device proposed by the present invention can adapt to more power facilities.

[0017] 2. The present invention installs and sets a plurality of insulators in a circular array between the top plate and the bottom plate to form the arrester body, which can effectively extend the service life of the arrester and has a better lightning protection effect. The top plate provided on the top of the arrester body can be used to pass through the top fixing sleeve provided at the lower end of the top plate, and the bolts can be installed through the fixing threaded holes provided on the top fixing sleeve to achieve the embedded setting and fixation of the top of the insulator. Combined with the bottom plate provided at the bottom of the arrester body, the bottom of the insulator can be embedded through the bottom fixing sleeve provided on the bottom plate, thereby achieving the purpose of more convenient installation and disassembly of the insulator and improving the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a front cross-sectional structural schematic diagram of the present invention; Figure 4 It is a partial front cross-sectional structural schematic diagram of the present invention; Figure 5 It is a schematic diagram of the support rod structure of the present invention; Figure 6 It is a schematic diagram of the mounting seat structure of the present invention; Figure 7 It is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 8 It is a schematic diagram of the front cross-sectional structure of the top of the wiring socket of the present invention; Fig. 9 It is a schematic diagram of the top plate structure of the present invention; Fig.10 It is a schematic diagram of the bottom plate structure of the present invention.

[0019] Explanations in the figure: 1. Fastening clamp; 2. Cross arm; 3. Insulating porcelain bottle; 4. Lightning arrester body; 5. Junction block; 6. Cable body; 7. Mounting seat; 8. Support rod; 9. First electrode support frame; 10. Lightning inductor; 11. Lightning rod; 12. Insulating ring; 13. Second electrode support frame; 14. Rotating part; 15. Wiring groove; 16. Clamp plate; 17. First nut; 18. Top plate; 19. Insulator; 20. Bottom plate; 21. Grounding block; 22. Insulating rod; 23. Second nut; 24. Bolt hole; 25. Fixing groove; 26. Limiting groove; 27. Bolt column; 28. First threaded groove; 29. ​​First threaded column; 30. Second threaded column; 31. Second threaded groove; 32. Top fixing sleeve; 33. Fixed threaded hole; 34. Bottom fixing sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0021] like Figure 1-4 As shown, the present embodiment discloses a multi-cavity lightning protection device for electric power facilities, which includes a fastening clamp 1 on a position electric power facility, cross arms 2 are arranged on both sides of the fastening clamp 1, insulating porcelain bottles 3 are arranged above both ends of the cross arms 2, a wiring block 5 is arranged on the upper end of the insulating porcelain bottle 3, a cable body 6 is inserted on the wiring block 5, a second nut 23 is arranged at the lower end of the insulating porcelain bottle 3, a second electrode support frame 13 is arranged in the middle of the second nut 23, a first electrode support frame 9 is arranged on one side of the second electrode support frame 13, and a lightning arrester body 4 is arranged at the lower end of the first electrode support frame 9, the lightning arrester body 4 includes a top plate 18 arranged at the upper end, an insulator 19 arranged at the lower end of the top plate 18, and a bottom plate 20 arranged at the lower end of the insulator 19, an insulating rod 22 is arranged at the lower end of the bottom plate 20, and the insulating rod 22 is connected to one side of the support rod 8.

[0022] In this embodiment, the cross arm 2 includes mounting seats 7 disposed on both sides of the fastening clamp 1 and a support rod 8 embedded in the upper end of the mounting seat 7, which is conducive to installing the device at a proper position of the power facility through the mounting seat 7; In this embodiment, the wiring block 5 at the upper end of the insulating porcelain bottle 3 includes a rotating member 14, a wiring groove 15 provided at the lower end of the rotating member 14, and a clamping plate 16 provided in the wiring groove 15 and threadedly connected to the rotating member 14, which is conducive to lifting and lowering the clamping plate 16 in the wiring groove 15 by rotating the rotating member 14, so as to achieve a more stable fixed arrangement of the cable body 6 in the wiring groove 15; In this embodiment, an insulating ring 12 is provided at the upper end of the insulating rod 22, and the lightning arrester body 4 is provided at one end of the insulating rod 22 close to the grounding block 21. The lightning arrester body 4 is composed of a top plate 18 and a bottom plate 20 provided at the upper and lower ends, and a plurality of insulators 19 provided between the top plate 18 and the bottom plate 20. A first nut 17 is provided at the upper end of the top plate 18, and a first electrode support frame 9 is provided in the middle of the first nut 17. A lightning rod 11 is also fixedly provided on the first nut 17 at the top end of the lightning arrester body 4, and a lightning inductor 10 is provided at the top end of the lightning rod 11, which is beneficial for the lightning inductor 10 to absorb lightning strikes to power facilities when thunderstorm weather occurs and the lightning is transmitted to the lightning rod 11 through the lightning inductor 10, and then the lightning rod 11 weakens the lightning and transmits the lightning to the earth through the grounding block 21, thereby alleviating the situation in which after the lightning is introduced into the ground, the lightning strike phenomenon will occur due to the potential difference, posing a huge threat to the power facilities. Example

[0023] like Figure 1-10 As shown, the present embodiment discloses a multi-cavity lightning arrester for electric power facilities, which comprises a fastening clamp 1 on a position electric power facility, cross arms 2 are arranged on both sides of the fastening clamp 1, insulating porcelain bottles 3 are arranged above both ends of the cross arms 2, a wiring block 5 is arranged at the upper end of the insulating porcelain bottle 3, a cable body 6 is inserted on the wiring block 5, a second nut 23 is arranged at the lower end of the insulating porcelain bottle 3, a second electrode support frame 13 is arranged in the middle of the second nut 23, a first electrode support frame 9 is arranged on one side of the second electrode support frame 13, and a lightning arrester body 4 is arranged at the lower end of the first electrode support frame 9, and the lightning arrester body 4 comprises a top plate 18 arranged at the upper end, an insulator 19 arranged at the lower end of the top plate 18, and a bottom plate 20 arranged at the lower end of the insulator 19, and an insulating rod 22 is arranged at the lower end of the bottom plate 20, and the insulating rod 22 is connected to one side of the support rod 8; In this embodiment, the support rod 8 includes a fixing groove 25 and bolt holes 24 symmetrically arranged at the upper and lower ends of the fixing groove 25. A connecting plate is fixedly arranged on both sides of the support rod 8 through the bolt holes 24 and the fixing groove 25. The insulating porcelain bottle 3 is arranged at the upper end of the connecting plate, the insulating rod 22 is arranged on one side of the connecting plate, and a grounding block 21 is also arranged on one side of the insulating rod 22. A limiting groove 26 is arranged at the upper end of the mounting seat 7, and the support rod 8 is slidably arranged in the limiting groove 26, and a bolt column 27 is threadedly interspersed on the mounting seat 7 and the support rod 8, which is conducive to more convenient installation and setting on the power facility; In this embodiment, a first thread groove 28 is provided in the rotating member 14, a first thread column 29 is fixed to the inner side of the middle of the first thread groove 28, a second thread column 30 is provided at the upper end of the clamping plate 16, a second thread groove 31 is provided in the middle of the second thread column 30, the second thread column 30 is threadedly embedded in the first thread groove 28, and the inner side of the first thread column 29 is provided in the second thread groove 31, which is conducive to rotating the rotating member 14 to make the second thread column 30 provided in the first thread groove 28 rise and fall therein, and at the same time, it can drive the clamping plate 16 inside the wiring groove 15, so that the clamping plate 16 can be more stably fitted with the cable body 6 and fixed to it; In this embodiment, a plurality of top fixing sleeves 32 are provided at the lower end of the top plate 18, and a fixing threaded hole 33 is provided on the inner side of the top fixing sleeve 32. A bottom fixing sleeve 34 is provided at the upper end of the bottom plate 20, and a spring is provided in the bottom fixing sleeve 34 inside the bottom plate 20 to enable the bottom fixing sleeve 34 to extend and retract in the bottom plate 20, so as to install and remove the insulator 19, thereby realizing the installation and removal of the insulator 19 on the arrester body 4. At the same time, when a single insulator 19 of the arrester body 4 is damaged, it can be replaced under power, thereby improving the efficiency of the live replacement and maintenance operation.

[0024] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-cavity lightning protection device for electric power facilities, comprising a fastening clamp (1) for positioning the electric power facilities, characterized in that: Cross arms (2) are provided on both sides of the fastening clamp (1), insulating porcelain bottles (3) are provided above both ends of the cross arms (2), a terminal block (5) is provided at the upper end of the insulating porcelain bottle (3), a cable body (6) is inserted through the terminal block (5), a second nut (23) is provided at the lower end of the insulating porcelain bottle (3), a second electrode support frame (13) is provided in the middle of the second nut (23), a first electrode support frame (9) is provided on one side of the second electrode support frame (13), the first electrode support frame (9), and a lightning arrester body (4) is provided at the lower end of the first electrode support frame (9), the lightning arrester body (4) comprises a top plate (18) provided at the upper end, an insulator (19) provided at the lower end of the top plate (18), and a bottom plate (20) provided at the lower end of the insulator (19), an insulating rod (22) is provided at the lower end of the bottom plate (20), and the insulating rod (22) is connected to one side of the support rod (8).

2. A multi-cavity lightning protection device for electric power facilities according to claim 1, characterized in that: The cross arm (2) comprises mounting seats (7) arranged on both sides of the fastening clamp (1) and a support rod (8) embedded in the upper end of the mounting seat (7).

3. A multi-cavity lightning protection device for electric power facilities according to claim 2, characterized in that: The support rod (8) comprises a fixing groove (25) and bolt holes (24) symmetrically arranged at the upper and lower ends of the fixing groove (25); a limiting groove (26) is arranged at the upper end of the mounting seat (7); the support rod (8) is slidably arranged in the limiting groove (26); and bolt columns (27) are threadedly inserted on the mounting seat (7) and the support rod (8).

4. A multi-cavity lightning protection device for electric power facilities according to claim 3, characterized in that: A connecting plate is fixedly arranged on both sides of the support rod (8) via bolt holes (24) and fixing grooves (25); the insulating porcelain bottle (3) is arranged at the upper end of the connecting plate; the insulating rod (22) is arranged on one side of the connecting plate; and a grounding block (21) is also arranged on one side of the insulating rod (22).

5. The multi-cavity lightning protection device for electric power facilities according to claim 1, characterized in that: The wiring block (5) at the upper end of the insulating porcelain bottle (3) comprises a rotating member (14), a wiring slot (15) arranged at the lower end of the rotating member (14), and a clamping plate (16) arranged in the wiring slot (15) and threadedly connected to the rotating member (14).

6. A multi-cavity lightning protection device for electric power facilities according to claim 5, characterized in that: A first thread groove (28) is provided in the rotating member (14), a first thread column (29) is fixed on the inner side of the middle of the first thread groove (28), a second thread column (30) is provided on the upper end of the clamping plate (16), and a second thread groove (31) is provided in the middle of the second thread column (30).

7. A multi-cavity lightning protection device for electric power facilities according to claim 6, characterized in that: The second thread column (30) is threadably embedded in the first thread groove (28), and the inner side of the first thread column (29) is disposed in the second thread groove (31).

8. The multi-cavity lightning protection device for electric power facilities according to claim 1, characterized in that: An insulating ring (12) is provided at the upper end of the insulating rod (22), the arrester body (4) is provided at one end of the insulating rod (22) close to the grounding block (21), and the arrester body (4) is composed of a top plate (18) and a bottom plate (20) provided at upper and lower ends, and a plurality of insulators (19) provided between the top plate (18) and the bottom plate (20).

9. A multi-cavity lightning protection device for electric power facilities according to claim 8, characterized in that: A plurality of top fixing sleeves (32) are provided at the lower end of the top plate (18), fixing threaded holes (33) are provided inside the top fixing sleeves (32), and a bottom fixing sleeve (34) is provided at the upper end of the bottom plate (20).

10. The multi-cavity lightning protection device for electric power facilities according to claim 8, characterized in that: A first nut (17) is arranged at the upper end of the top plate (18), the first electrode support frame (9) is arranged in the middle of the first nut (17), a lightning rod (11) is also fixedly arranged on the first nut (17) at the top end of the arrester body (4), and a lightning inductor (10) is arranged at the top end of the lightning rod (11).

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