Metal outer sheath grounding structure of high-voltage single-core cable

Abstract

The utility model relates to the technical field of high-voltage single-core cables, and discloses a high-voltage single-core cable metal outer sheath grounding structure which comprises a fixing plate and a battery cell, a support is fixedly connected to the upper end of the fixing plate, two lightning rods are fixedly connected to the upper end of the support, and a lightning conductor is fixedly connected to the lower end of the fixing plate. And a groove is formed in the fixing plate. According to the metal outer sheath grounding structure of the high-voltage single-core cable, the supporting column is fixed to a required position through the base, and the lightning rod is installed on the support, so that when the device is struck by lightning, the lightning can be split to the lightning rod and transmitted to the ground through the lightning conductor, the device is prevented from being damaged, and even if the cable is struck by lightning, the cable is prevented from being damaged. The protection pipe and the insulator in the protection pipe are arranged outside the cable to ensure that the cable is not damaged, and a plurality of layers are additionally arranged on the cable to ensure that the cable is not affected by the environment and is not damaged.

Description

Technical Field

[0001] This application relates to the technical field of high-voltage single-core cables, and specifically to a grounding structure for the metal outer sheath of a high-voltage single-core cable. Background Art

[0002] Currently, the descriptions of the grounding methods for the metal outer sheath of AC single-core current cables in various design codes and regulations in China are relatively simple, and the grounding methods are also some single-line diagrams. Recently, a survey of the power supply design departments in major cities across the country shows that the number of cable lines is increasing at a relatively large proportion every year, and the grounding methods of the metal outer sheaths are roughly the same. However, for some special cable lines, there are different grounding methods, and most of the grounding cables use single-core grounding leads (except for cross-bonding grounding wires) and are only connected to the metal outer sheath of the cable.

[0003] The existing patent (publication number: CN202737115U) discloses a grounding structure for the metal outer sheath of a high-voltage single-core cable, which includes a high-voltage single-core cable and a protector grounding box. The inner conductor of the coaxial cable is connected to the metal outer sheath of the high-voltage single-core cable, and the outer conductor of the coaxial cable is connected to the terminal or intermediate joint bracket or metal framework.

[0004] The above-mentioned comparative document points out that the advantages of this utility model are that it can reduce the induced voltage of the metal outer sheath of the high-voltage single-core power cable, prevent the insulation of the cable metal sheath from being broken down, and cause line faults. It can improve the design level of the power cable line and the power supply reliability of the cable line, and ensure the personal safety of operation and maintenance. However, in actual applications, specific implementation details, anti-interference ability, and long-term operation stability also need to be considered. In actual applications, it may be affected by external environmental interference, such as lightning strikes, which may affect the performance of the device. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, this application provides a grounding structure for the metal outer sheath of a high-voltage single-core cable, which has advantages such as being convenient for the applicable environment, and solves the problems that in actual applications, specific implementation details, anti-interference ability, and long-term operation stability also need to be considered, and it may be affected by external environmental interference in actual applications, such as lightning strikes, which may affect the performance of the device.

[0006] To achieve the above object, this application provides the following technical solution: A grounding structure for the metal outer sheath of a high-voltage single-core cable, including a fixing plate and an electric core. A bracket is fixedly connected to the upper end of the fixing plate, two lightning rods are fixedly connected to the upper end of the bracket, a lightning protection wire is fixedly connected to the lower end of the fixing plate, a groove is opened inside the fixing plate, two fixing blocks corresponding to the groove are fixedly connected to the upper end of the fixing plate, and a protection tube corresponding to the groove is fixedly connected to the lower end of the fixing plate.

[0007] Through the above solution, the support is fixed at the required position through the base, and a lightning rod is installed on the bracket. When the device is struck by lightning, the lightning will strike the lightning rod and be transmitted to the ground through the lightning protection wire, preventing the device from being damaged.

[0008] Furthermore, the lower end of the fixing plate is fixedly connected to a support, and one end of the support is fixedly connected to a base.

[0009] Through the above solution, the device is fixed at the required position by fixing the support through the base.

[0010] Furthermore, a shielding layer is fixedly connected to the outer wall of the battery cell, and an insulating layer is fixedly connected to the outer wall of the shielding layer.

[0011] Through the above solution, the battery cell is prevented from being interfered by external signals by setting the shielding layer.

[0012] Furthermore, a winding shaft corresponding to the groove is fixedly connected to the upper end of the bracket.

[0013] Through the above solution, the cable is connected to other cables by setting the winding shaft.

[0014] Furthermore, springs are fixedly connected to one side of the two fixing blocks, and arc-shaped plates are fixedly connected to one side of the two springs.

[0015] Through the above solution, a fixing structure for the cable composed of a spring and an arc-shaped plate is installed on the fixing plate, which facilitates the staff to install the cable.

[0016] Furthermore, an insulator is fixedly connected to the inner wall of the protection tube, and a protector grounding box is fixedly connected to the middle of the protection tube.

[0017] Through the above solution, the cable is protected from damage by setting a protection tube outside the cable and an insulator inside the protection tube.

[0018] Furthermore, an anti-corrosion layer is fixedly connected to the outer wall of the insulating layer, and a waterproof layer is fixedly connected to the outer wall of the anti-corrosion layer.

[0019] Through the above solution, by adding multiple layers to the cable, it is ensured that the cable will not be damaged due to environmental influences.

[0020] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0021] The grounding structure of the metal outer sheath of a high-voltage single-core cable fixes the support through the base at the required position. A lightning rod is installed on the bracket. When the device is struck by lightning, the lightning will strike the lightning rod and be transmitted to the ground through the lightning protection wire, avoiding damage to the device. Even if the lightning strikes the cable, a protective tube and an insulator inside the protective tube are provided outside the cable to ensure that the cable will not be damaged. In addition, multiple layers are added to the cable to ensure that the cable will not be damaged due to environmental influences. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this application;

[0023] Figure 2 It is a schematic diagram of the cell structure of this application;

[0024] Figure 3 It is a front view of the structure of this application;

[0025] Figure 4 It is a left view of this application.

[0026] In the figure:

[0027] 1. Fixed plate; 2. Support; 3. Base; 4. Bracket; 5. Lightning rod; 6. Lightning protection wire; 7. Winding shaft; 8. Groove; 9. Fixed block; 10. Spring; 11. Arc-shaped plate; 12. Protective tube; 13. Protector grounding box; 14. Insulator; 15. Cell; 16. Shielding layer; 17. Insulating layer; 18. Anticorrosion layer; 19. Waterproof layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] Please refer to Figure 1 、 Figure 2 and Figure 3, a grounding structure for the metal sheath of a high-voltage single-core cable in this embodiment, includes a fixing plate 1 and a cable core 15. A bracket 4 is fixedly connected to the upper end of the fixing plate 1, and two lightning rods 5 are fixedly connected to the upper end of the bracket 4. A lightning protection wire 6 is fixedly connected to the lower end of the fixing plate 1. A groove 8 is formed inside the fixing plate 1. Two fixing blocks 9 corresponding to the groove 8 are fixedly connected to the upper end of the fixing plate 1. A protective tube 12 corresponding to the groove 8 is fixedly connected to the lower end of the fixing plate 1. By fixing the support column 2 at the required position through the base 3, and installing lightning rods 5 on the bracket 4, when the device is struck by lightning, the lightning will strike the lightning rods 5 and be transmitted to the ground through the lightning protection wire 6, avoiding damage to the device.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , a support column 2 is fixedly connected to the lower end of the fixing plate 1, and a base 3 is fixedly connected to one end of the support column 2. By fixing the support column 2 through the base 3, the device is fixed at the required position. A shielding layer 16 is fixedly connected to the outer wall of the cable core 15, and an insulating layer 17 is fixedly connected to the outer wall of the shielding layer 16. By setting the shielding layer 16, the cable core 15 is prevented from being interfered by external signals. A winding shaft 7 corresponding to the groove 8 is fixedly connected to the upper end of the bracket 4. By setting the winding shaft 7, the cable is connected to other cables. Springs 10 are fixedly connected to one side of the two fixing blocks 9, and arc-shaped plates 11 are fixedly connected to one side of the two springs 10. By installing a fixing structure for the cable composed of the spring 10 and the arc-shaped plate 11 on the fixing plate 1, it is convenient for the staff to install the cable. An insulator 14 is fixedly connected to the inner wall of the protective tube 12, and a protector grounding box 13 is fixedly connected to the middle of the protective tube 12. By setting the protective tube 12 outside the cable and the insulator 14 inside the protective tube 12, it is ensured that the cable will not be damaged. An anti-corrosion layer 18 is fixedly connected to the outer wall of the insulating layer 17, and a waterproof layer 19 is fixedly connected to the outer wall of the anti-corrosion layer 18. By adding multiple layers to the cable, it is ensured that the cable will not be damaged due to environmental influences.

[0031] In this embodiment, by fixing the support column 2 at the required position through the base 3, and installing lightning rods 5 on the bracket 4, when the device is struck by lightning, the lightning will strike the lightning rods 5 and be transmitted to the ground through the lightning protection wire 6, avoiding damage to the device. Even if the lightning strikes the cable, the protective tube 12 outside the cable and the insulator 14 inside the protective tube 12 are set to ensure that the cable will not be damaged. And multiple layers are added to the cable to ensure that the cable will not be damaged due to environmental influences.

[0032] It should be noted that the material of the insulating layer 17 of the device is polyvinyl chloride, and the material of the anti-corrosion layer 18 is stainless steel.

[0033] The working principle of the above embodiment is as follows: When the device is in use, first, the support column 2 is fixed at the required position through the base 3. A lightning rod 5 is installed on the bracket 4. When the device is struck by lightning, the lightning will strike the lightning rod 5 and be transmitted to the ground through the lightning protection wire 6, avoiding damage to the device. Even if the lightning strikes the cable, a protective tube 12 and an insulator 14 inside the protective tube 12 are provided outside the cable to ensure that the cable will not be damaged. Moreover, multiple layers are added to the cable to ensure that the cable will not be damaged due to environmental influences. In addition, a fixing structure for the cable composed of a spring 10 and an arc-shaped plate 11 is added to the fixing plate 1, which facilitates the installation of the cable by the staff, reduces the traction force on the cable, and increases the service life of the cable.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0035] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is limited by the appended claims and their equivalents.

Claims

1. A high-voltage single-core cable metal outer sheath grounding structure, comprising a fixing plate (1) and a battery core (15), characterized in that: The upper end of the fixing plate (1) is fixedly connected to a bracket (4), the upper end of the bracket (4) is fixedly connected to two lightning rods (5), the lower end of the fixing plate (1) is fixedly connected to a lightning conductor (6), a groove (8) is provided inside the fixing plate (1), the upper end of the fixing plate (1) is fixedly connected to two fixing blocks (9) corresponding to the groove (8), and the lower end of the fixing plate (1) is fixedly connected to a protective tube (12) corresponding to the groove (8).

2. A high-voltage single-core cable metal outer sheath grounding structure according to claim 1, characterized in that: The lower end of the fixed plate (1) is fixedly connected to a support (2), and one end of the support (2) is fixedly connected to a base (3).

3. A high-voltage single-core cable metal outer sheath grounding structure according to claim 1, characterized in that: The outer wall of the battery core (15) is fixedly connected to a shielding layer (16), and the outer wall of the shielding layer (16) is fixedly connected to an insulating layer (17).

4. A high-voltage single-core cable metal outer sheath grounding structure according to claim 1, characterized in that: The upper end of the bracket (4) is fixedly connected to a winding shaft (7) corresponding to the groove (8).

5. A high-voltage single-core cable metal outer sheath grounding structure according to claim 1, characterized in that: One side of the two fixed blocks (9) is fixedly connected to a spring (10), and one side of the two springs (10) is fixedly connected to an arc-shaped plate (11).

6. A high-voltage single-core cable metal outer sheath grounding structure according to claim 1, characterized in that: An insulator (14) is fixedly connected to the inner wall of the protection tube (12), and a protector grounding box (13) is fixedly connected to the middle of the protection tube (12).

7. A high-voltage single-core cable metal outer sheath grounding structure according to claim 3, characterized in that: The outer wall of the insulating layer (17) is fixedly connected to an anti-corrosion layer (18), and the outer wall of the anti-corrosion layer (18) is fixedly connected to a waterproof layer (19).

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