Insulated tube bus outdoor connection cable structure

Abstract

The utility model provides an insulating tube bus outdoor connection cable structure, including the cable drop clamp who sets up at the place where insulating tube bus needs to connect with outdoor cable, and the cable drop clamp is connected with insulating tube bus, the cable drop clamp sets up in the inside of outdoor cable protection box, is provided with the through -wall insulation structure on the both sides of outdoor cable protection box, is provided with the protection support structure in the lower part of outdoor cable protection box, the utility model has the following beneficial effects: 1, the direct connection of outdoor cable and insulating tube bus, need not expand the area of the prefabricated cabin, reduces the project cost, 2, forms stable support and fixed to cable, avoids the additional load of insulating tube bus, 3, effectively insulates the environmental factors such as outdoor ultraviolet rays, rainwater, delays cable head aging, reduces the breakdown risk, 4, while guaranteeing the protection performance, realizes the high -efficient heat dissipation of cable joint through the optimization structure design.

Description

Technical Field

[0001] This utility model pertains to auxiliary facilities in new energy power stations, specifically relating to an outdoor connection cable structure for an insulated busbar. Background Technology

[0002] Currently, the connection method between insulated busbars and cables in new energy power stations has obvious limitations: if direct outdoor connection is used, the cable head will be exposed to the natural environment for a long time, and the sun will accelerate its aging process, while rainwater infiltration will significantly increase the risk of breakdown; if it is changed to indoor connection in prefabricated compartments, the area of ​​the prefabricated compartments needs to be expanded, which will lead to a significant increase in project costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to achieve a reliable connection between the insulating busbar and the cable outdoors, and to ensure safe and reliable operation at the cable joint. Therefore, a new structure for connecting the insulating busbar to the cable outdoors is provided.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: An outdoor cable connection structure for an insulated busbar includes a cable drop clamp installed at the point where the insulated busbar needs to connect with an outdoor cable, the cable drop clamp being connected to the insulated busbar; the cable drop clamp is installed inside an outdoor cable protection box, with wall-penetrating insulation structures on both sides of the outdoor cable protection box and a protective support structure at the bottom of the outdoor cable protection box.

[0005] Outdoor cables are installed on cable supports, with a crossbeam above the cable supports. The crossbeam supports the insulated busbar via two strings of insulators on the left and right. The outdoor cable protection box is located between the two strings of insulators, and the bottom of the outdoor cable protection box is installed on the crossbeam via a protective support structure.

[0006] Ventilation holes are evenly distributed at the bottom of the outdoor cable protection box.

[0007] A cable support is installed at the top of the cable support post, and a cable protection pipe is installed at the bottom of the cable support post.

[0008] Compared with the prior art, the present invention has the following beneficial effects: 1. Direct connection between external cables and insulated busbars eliminates the need to expand the prefabricated compartment area, reducing project costs; 2. Provides stable support and fixation for the cable, preventing the insulating tube from bearing additional load; 3. Effectively isolates outdoor ultraviolet rays, rain and other environmental factors, delays cable head aging and reduces the risk of breakdown; 4. While ensuring protective performance, efficient heat dissipation at the cable joint is achieved through optimized structural design. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0012] like Figure 1 As shown, an outdoor cable connection structure for an insulated busbar includes a cable drop clamp 4 installed at the point where the insulated busbar needs to be connected to an outdoor cable. The cable drop clamp 4 is connected to the insulated busbar 8. The cable drop clamp 4 is installed inside an outdoor cable protection box 1. A wall-penetrating insulation structure 2 is installed on both sides of the outdoor cable protection box 1, and a protective support structure 3 is installed at the bottom of the outdoor cable protection box 1.

[0013] It should be noted that the outdoor cable is installed on cable support post 9, and a crossbeam 10 is installed above the cable support post 9. The crossbeam 10 supports the insulated busbar 8 through two strings of insulators on the left and right. The outdoor cable protection box 1 is located between the two strings of insulators, and the bottom of the outdoor cable protection box 1 is installed on the crossbeam 10 through a protective support structure 3. In this way, the outdoor cable protection box 1 is supported and fixed by the protective support structure 3. The protective support structure 3 can be made of channel steel and angle steel.

[0014] Furthermore, the through-wall insulation structure 2 refers to a through-wall structure made of non-metallic, non-magnetic insulating materials, ensuring airtightness while preventing conductive breakdown of the enclosure. The non-metallic, non-magnetic insulating materials here are a class of engineering materials with clearly defined functions, including plastics, rubber, ceramics, glass, and composite materials. The through-wall structure includes a through-wall bushing, a robust, typically cylindrical or square, outer shell through which the insulating busbar passes. The through-wall bushing is made of non-metallic, non-magnetic insulating material and is fixed to the outdoor cable protection box 1 by a wall cap / flange. If necessary, a fire-resistant sealant and an electromagnetic shielding layer are filled between the through-wall bushing and the insulating busbar; both the fire-resistant sealant and the electromagnetic shielding layer are existing technologies.

[0015] Furthermore, since heat is generated at the cable joint, heat dissipation holes 5 are evenly distributed at the bottom of the outdoor cable protection box to ensure heat dissipation of the cable head.

[0016] Better still, since the vertical section of the cable has weight, in order to avoid stress at the joint, a cable support 6 is installed on the upper part of the cable post 9 to bear the weight of the vertical section of the cable 11, and a cable protection pipe 7 is installed on the lower part of the cable post 9 to protect the cable 11.

[0017] The working principle of this utility model is as follows: at the point where the insulated busbar needs to be connected to the cable outdoors, a cable lead-down clamp 4 is first set up, and a cable protection box 1 is set up within a 1m range of the lead-down structure. A through-wall insulation structure 2 is set up on both sides of the cable protection box 1 to ensure reliable insulation when the insulated busbar passes through the wall of the protection box. The cable protection box 1 is supported and fixed by the protective support structure 3.

[0018] This utility model relates to a design scheme for connecting an insulated busbar to an outdoor cable. It enables the connection of the insulated busbar to the cable outdoors, and has the function of protecting against outdoor ultraviolet rays and rainwater. At the same time, it takes into account the heat dissipation at the cable joint, the support and fixation of the cable, and can effectively improve the reliability of the joint and ensure the safe operation of the project. It is suitable for connecting medium voltage busbars and cables above 10kV.

[0019] After using this solution, it is expected to effectively improve the cable joint's tolerance to environmental conditions, reduce the probability of failure, and optimize subsequent operation and maintenance costs by approximately RMB 50,000 per joint.

[0020] The beneficial effects of this utility model are as follows: 1. Direct connection between external cables and insulated busbars eliminates the need to expand the prefabricated compartment area, reducing project costs; 2. Provides stable support and fixation for the cable, preventing the insulating tube from bearing additional load; 3. Effectively isolates outdoor ultraviolet rays, rain and other environmental factors, delays cable head aging and reduces the risk of breakdown; 4. While ensuring protective performance, efficient heat dissipation at the cable joint is achieved through optimized structural design.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. An outdoor connection cable structure for an insulated busbar, characterized in that: It includes a cable down clamp (4) installed at the point where the insulated busbar needs to be connected to the outdoor cable, and the cable down clamp (4) is connected to the insulated busbar (8); the cable down clamp (4) is installed inside the outdoor cable protection box (1), and a wall-penetrating insulation structure (2) is installed on both sides of the outdoor cable protection box (1), and a protective support structure (3) is installed at the bottom of the outdoor cable protection box (1).

2. The outdoor connection cable structure for an insulated busbar according to claim 1, characterized in that: Outdoor cables are installed on cable supports (9), and a crossbeam (10) is installed above the cable supports (9). The crossbeam (10) supports the insulated busbar (8) through two insulator strings on the left and right. The outdoor cable protection box (1) is located between the two insulator strings, and the bottom of the outdoor cable protection box (1) is installed on the crossbeam (10) through a protective support structure (3).

3. The outdoor connection cable structure for an insulated busbar according to claim 1, characterized in that: Heat dissipation holes (5) are evenly arranged at the bottom of the outdoor cable protection box (1).

4. The outdoor connection cable structure for an insulated busbar according to claim 2, characterized in that: A cable support (6) is installed on the upper part of the cable support (9), and a cable protection pipe (7) is installed on the lower part of the cable support (9).

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