Lightning arrester resistor disc structure

Abstract

The utility model discloses a lightning arrester resistor disc structure, which relates to the field of lightning arresters, and comprises a lightning arrester main body and lightning guide rods fixed at two ends of the lightning arrester main body, the lightning arrester main body comprises an insulating protective sleeve and resistor disc main bodies embedded and fixed in the insulating protective sleeve at equal intervals, a conductive metal rod is fixed between every two adjacent resistor disc main bodies, and a resistor shunt rod embedded in the resistor disc main bodies is fixed between every two lightning guide rods. According to the utility model, the conductive metal rod is used for guiding the electric arc, so that the surface of the resistor disc main body is prevented from being damaged by the electric arc, meanwhile, the lightning guide rod is respectively connected with the resistor shunting rod and the resistor disc main body, and lightning is shunted through the resistor shunting rod and the resistor disc main body, so that the current borne by the resistor disc main body is reduced; and the service lives of the resistor disc main body and the lightning arrester main body are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of surge arresters, specifically to a surge arrester resistor element structure. Background Technology

[0002] A surge arrester is an electrical device used to protect electrical equipment from the high transient overvoltages caused by lightning strikes and to limit the follow current duration and amplitude. Surge arresters are sometimes also called overvoltage protectors or overvoltage limiters. Currently, surge arresters are mainly installed before electrical equipment to block the high voltage generated by lightning strikes and guide it to the ground.

[0003] Currently, when a surge arrester is in use, the resistor elements need to bear the entire current. The gaps between the resistor elements will generate an electric arc. Some resistor elements inside the surge arrester will be damaged by lightning strikes. The damaged resistor elements will generate an electric arc with the intact resistor elements, thus causing damage to the intact resistor elements. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a surge arrester resistor element structure to solve the technical problem that resistor elements will be damaged by lightning strikes, and that the damaged resistor elements will generate an electric arc with the intact resistor elements, thereby causing damage to the intact resistor elements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a surge arrester resistor element structure, comprising a surge arrester body and lightning rods fixed at both ends of the surge arrester body. The surge arrester body includes an insulating protective sleeve and resistor element bodies equidistantly embedded and fixed in the insulating protective sleeve. A conductive metal rod is fixed between two adjacent resistor element bodies, and a resistor shunt rod embedded in the resistor element body is fixed between two lightning rods.

[0006] The present invention is further configured such that grooves are provided at both ends of the insulating protective sleeve, and multiple lightning protection skirts are fixed at equal intervals on the outer wall of the insulating protective sleeve.

[0007] The present invention is further configured such that a conductive connecting cover embedded in a groove is fitted on the lightning rod, and multiple bolts are threaded onto the lightning rod.

[0008] The present invention is further configured such that a lightning conductor connection terminal is fastened between the two bolts, and the lightning conductor connection terminal is sleeved and fixed on the lightning rod.

[0009] The present invention is further provided that insulating rings are provided at both ends of the conductive metal rod, and the insulating rings are in a ring structure and are tightly connected to the conductive metal rod and the resistor shunt rod respectively.

[0010] The present invention is further configured such that an insulating protective cover is embedded and fixed inside the insulating protective sleeve, and the insulating protective cover is sleeved on multiple resistor sheet bodies and insulating rings.

[0011] The present invention is further configured such that insulating load-bearing plates are embedded in both ends of the insulating protective sleeve, and the near ends of the two insulating load-bearing plates abut against the main body of the resistor sheet.

[0012] In summary, this utility model has the following beneficial effects: By fixing a conductive metal rod between two adjacent resistor bodies, when there are gaps between multiple resistor bodies after installation, the conductive metal rod can divert the electric arc, thereby preventing the electric arc from damaging the surface of the resistor body. At the same time, the lightning rod is connected to the resistor shunt rod and the resistor body respectively, and the lightning is diverted through the resistor shunt rod and the resistor body, thereby reducing the current borne by the resistor body and improving the service life of the resistor body and the surge arrester body. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Lightning conductor connection terminal; 2. Surge arrester body; 3. Lightning conductor rod; 4. Surge arrester skirt; 5. Conductive connection cover; 6. Bolt; 7. Groove; 8. Insulating protective sleeve; 9. Resistor body; 10. Resistor shunt rod; 11. Insulating protective cover; 12. Conductive metal rod; 13. Insulating ring; 14. Insulating load-bearing plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] A surge arrester resistor element structure, such as Figure 1-4As shown, the surge arrester includes a surge arrester body 2 and lightning rods 3 fixed at both ends of the surge arrester body 2. The surge arrester body 2 includes an insulating protective sleeve 8 and resistor sheet bodies 9 that are equidistantly embedded and fixed in the insulating protective sleeve 8. A conductive metal rod 12 is fixed between two adjacent resistor sheet bodies 9, and a resistor shunt rod 10 embedded in the resistor sheet body 9 is fixed between two lightning rods 3.

[0020] Both ends of the insulating protective sleeve 8 are provided with grooves 7, and multiple lightning protection skirts 4 are fixed at equal intervals on the outer wall of the insulating protective sleeve 8. The lightning rod 3 is fitted with a conductive connection cover 5 embedded in the groove 7, and multiple bolts 6 are threaded onto the lightning rod 3. A lightning conductor connection terminal 1 is fastened between two bolts 6. The lightning conductor connection terminal 1 is fitted and fixed on the lightning rod 3. A wire connection ring is provided on the lightning conductor connection terminal 1. The lightning conductor is connected and fixed through the wire connection ring. At the same time, two screws are tightened to clamp and fix the lightning conductor connection terminal 1.

[0021] Furthermore, insulating rings 13 are provided at both ends of the conductive metal rod 12. The insulating rings 13 are in a ring structure and are tightly connected to the conductive metal rod 12 and the resistor shunt rod 10 respectively. An insulating protective cover 11 is embedded and fixed in the insulating protective sleeve 8. The insulating protective cover 11 is sleeved on multiple resistor sheet bodies 9 and the insulating rings 13. Insulating load-bearing plates 14 are embedded at both ends of the insulating protective sleeve 8. The near ends of the two insulating load-bearing plates 14 abut against the resistor sheet body 9. The conductive metal rod 12 can divert the electric arc and avoid the electric arc from damaging the surface of the resistor sheet body 9. At the same time, the lightning rod 3 is connected to the resistor shunt rod 10 and the resistor sheet body 9 respectively. The resistor shunt rod 10 and the resistor sheet body 9 divert the lightning and reduce the current borne by the resistor sheet body 9.

[0022] The working principle of this utility model is as follows: During use, the conductive protective cover is fixed on the lightning rod 3 by tightening the bolt 6, and the lightning rod 3 is fixedly installed. When there are gaps between multiple resistor body 9 after installation, the conductive metal rod 12 can divert the electric arc, avoiding damage to the surface of the resistor body 9 caused by the electric arc. At the same time, the lightning rod 3 is connected to the resistor shunt rod 10 and the resistor body 9 respectively. The lightning is diverted through the resistor shunt rod 10 and the resistor body 9, thereby reducing the current borne by the resistor body 9 and improving the service life of the resistor body 9 and the surge arrester body 2.

[0023] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A surge arrester resistor structure, comprising a surge arrester body (2) and surge conductors (3) fixed at both ends of the surge arrester body (2), characterized in that: The surge arrester body (2) includes an insulating protective sleeve (8) and resistor sheet bodies (9) that are equidistantly embedded and fixed in the insulating protective sleeve (8). A conductive metal rod (12) is fixed between two adjacent resistor sheet bodies (9), and a resistor shunt rod (10) embedded in the resistor sheet body (9) is fixed between two surge rods (3).

2. The surge arrester resistor element structure according to claim 1, characterized in that: The insulating protective sleeve (8) has grooves (7) at both ends, and multiple lightning protection skirts (4) are fixed at equal intervals on the outer wall of the insulating protective sleeve (8).

3. The surge arrester resistor element structure according to claim 2, characterized in that: The lightning rod (3) is fitted with a conductive connection cap (5) embedded in a groove (7), and the lightning rod (3) is threaded with multiple bolts (6).

4. The surge arrester resistor element structure according to claim 3, characterized in that: A lightning conductor connection terminal (1) is fastened between the two bolts (6), and the lightning conductor connection terminal (1) is sleeved and fixed on the lightning rod (3).

5. The surge arrester resistor element structure according to claim 1, characterized in that: Insulating rings (13) are provided at both ends of the conductive metal rod (12), and the insulating rings (13) are in a ring structure and are tightly connected to the conductive metal rod (12) and the resistor shunt rod (10) respectively.

6. The surge arrester resistor element structure according to claim 5, characterized in that: An insulating protective cover (11) is embedded and fixed in the insulating protective sleeve (8), and the insulating protective cover (11) is sleeved on multiple resistor bodies (9) and insulating rings (13).

7. The surge arrester resistor element structure according to claim 6, characterized in that: Both ends of the insulating protective sleeve (8) are inlaid with insulating load-bearing plates (14), and the two adjacent ends of the insulating load-bearing plates (14) abut against the resistor body (9).

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