Cable rack structure
By installing conductive clamps made of galvanized steel on the cable rack columns, the problem of difficulty in welding between copper grounding wires and steel cable racks is solved, and the reliable connection and low impedance of grounding wires are achieved, meeting the potential difference requirements and avoiding damage to the cable rack.
Patent Information
- Application Number
- CN202422246376.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-13
AI Technical Summary
In mountain hydropower stations or pumped storage power stations, it is difficult to directly weld the copper grounding wire and the steel cable rack, resulting in a large impedance of the grounding wire, which cannot meet the potential difference requirements in the grounding grid, and the existing welding methods are prone to damage the cable rack.
The cable rack column and conductive hoop are made of galvanized steel. The copper grounding wire is installed through the opening of the conductive hoop. The welding characteristics of the same material are used to install the copper grounding wire on the cable rack column, and the opening is closed by welding to achieve reliable connection.
The reliable connection between the copper grounding wire and the cable frame is achieved, the impedance of the grounding wire is reduced, the potential difference requirements are met, and the cable frame is avoided.
Smart Images
Figure CN223181781U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cable rack structure, which is applicable to the technical field of electrical laying equipment. Background Art
[0002] During the cable laying process, the cable rack should be grounded throughout its length, and the grounding wire should be reliably connected to the cable rack. A number of vertically arranged cable racks are installed along the longitudinal direction of the cable trench in the cable trench. Usually, the through-length grounding wire of the cable rack is reliably welded with a flat steel to the steel cable rack. However, for hydropower stations or pumped-storage power stations located in mountainous areas with a large hub area, large short-circuit currents, and long cable laying paths, due to the magnetic conductivity characteristics of the flat steel, its impedance for long-distance laying is larger than that of the copper grounding wire, and it cannot meet the requirement of the potential difference within the grounding grid. Therefore, a copper grounding wire needs to be laid along the entire length of the cable rack to reduce the impedance of the long-distance grounding wire and reduce the potential difference at both ends of the grounding wire during the grounding short circuit of the power station outgoing line. When the copper grounding wire is laid along the steel cable rack, due to the different characteristics such as melting points of the two materials, it is not easy to directly weld them. If special welding methods are used, this not only increases the difficulty of on-site actual operation, but also easily causes certain damage to the cable rack. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is: To solve the above technical problem, the utility model provides a cable rack structure.
[0004] The technical solution adopted by the utility model is: A cable rack structure is arranged in the cable trench, and is characterized in that: At least two cable rack columns are installed along the longitudinal direction of the cable trench on the inner wall of the cable trench, a cable rack arranged along the longitudinal direction of the cable trench is arranged in the cable trench, the cable rack is installed on the cable rack columns, conductive clamps are installed at corresponding positions on the cable rack columns, a copper grounding wire is arranged along the longitudinal direction of the cable trench in the cable trench, and the copper grounding wire is clamped in the conductive clamps on the cable rack columns. In this way, when the copper grounding wire is arranged on the cable rack columns, by installing the copper grounding wire in the conductive clamps on the cable rack columns, it is convenient to install the copper grounding wire on the cable rack columns.
[0005] The conductive clamp is provided with an opening, and the opening of the conductive clamp is closed and welded after the copper grounding wire is clamped in the conductive clamp. In this way, when the copper grounding wire is installed on the cable rack columns, it is convenient to install the copper grounding wire in the conductive clamp through the opening on the conductive clamp; and after the copper grounding wire is installed in the conductive clamp, the opening on the conductive clamp is closed by tools such as pliers and then welded and closed by fusion welding, which is convenient to clamp the copper grounding wire in the conductive clamp.
[0006] The materials of the cable rack upright column, the cable rack and the conductive hoop are all galvanized steel. In this way, both the cable rack upright column and the conductive hoop have good electrical conductivity, enabling the copper grounding wire to contact the ground.
[0007] The conductive hoop is welded to the cable rack upright column. In this way, the conductive hoop and the cable rack are made of the same material, facilitating the welding of the conductive hoop to the cable rack.
[0008] The beneficial effects of the present utility model are as follows: By welding a conductive hoop made of the same steel material on the cable rack upright column, it is convenient to weld the conductive hoop to the cable rack upright column; by installing the copper grounding wire into the conductive hoop through the opening on the conductive hoop and then welding the conductive hoop by fusion welding, it is convenient to install the copper grounding wire on the cable rack upright column and connect the copper grounding wire to the ground through the cable rack upright column and the conductive hoop; after installing the copper grounding wire into the conductive hoop through the opening on the conductive hoop, welding the opening of the conductive hoop by fusion welding facilitates clamping the copper grounding wire in the conductive hoop. Since the cable rack upright column and the conductive hoop are made of the same material, it is convenient to weld the conductive hoop to the cable rack upright column and perform the fusion welding of the conductive hoop. Description of the Drawings
[0009] Figure 1 : Schematic structural diagram of the cable rack upright column in the present utility model.
[0010] Figure 2 : Schematic structural diagram of installing the copper grounding wire on the cable rack upright column in the present utility model.
[0011] Figure 3 : Longitudinal sectional view of the cable trench after installing the copper grounding wire in the present utility model.
[0012] In the figure: 1, conductive hoop; 2, cable rack upright column; 3, opening; 4, copper grounding wire; 5, cable trench; 6, cable rack. Detailed Embodiment
[0013] The present utility model will be further described in detail below in conjunction with the drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.
[0014] This embodiment is a cable rack structure arranged in the cable trench 5. At least two cable rack columns 2 arranged vertically are installed along the longitudinal direction of the cable trench 5 on the side wall of the cable trench 5. A cable rack 6 arranged along the longitudinal direction of the cable trench is arranged in the cable trench. The cable rack 6 is installed on the cable rack columns 2, which is convenient for mounting cable wires on the cable rack 6. Conductive clamps 1 are installed at corresponding positions of each cable rack column 2. The materials of the cable rack columns 2, the cable rack 6 and the conductive clamps 1 are all galvanized steel. The cable rack 6 and the conductive clamps 1 are welded to the cable rack columns 2. In this way, because the cable rack 6, the cable rack columns 2 and the conductive clamps 1 have the same material and the same characteristics such as melting point, it is convenient to weld the cable rack 6 and the conductive clamps 1 to the cable rack columns 2. At the same time, when the grounding wire is installed on the conductive clamp 1, the conductivity of the steel material is convenient for connecting the grounding wire to the ground.
[0015] In this embodiment, a grounding wire is arranged along the longitudinal direction of the cable trench 5 in the cable trench 5. In this embodiment, a copper grounding wire 4 is used because the cable laying path is long. The copper cable wire is installed in the conductive clamp 1. An opening 3 is made on the conductive clamp 1. The copper cable wire is clamped in the conductive clamp 1 through the opening 3 on the conductive clamp 1. After the copper cable wire is clamped in the conductive clamp 1, tools such as calipers are used to close the opening 3 on the conductive clamp 1, and then the opening 3 of the conductive clamp 1 is welded and closed by fusion welding, so as to clamp the copper cable wire in the conductive clamp 1. Because the material of the conductive clamp 1 is consistent, it is convenient for welding the opening 3 of the conductive clamp 1. Because the copper cable wire has strong conductivity, when a grounding short circuit occurs at the power station outlet, the potential difference between each cable rack column 2 and the conductive clamp 1 on the copper grounding wire 4 is small, which can effectively meet the requirements.
[0016] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A cable rack structure is arranged in a cable trench, characterized in that: At least two cable rack columns (2) are installed along the longitudinal direction of the cable trench (5) on the inner wall of the cable trench (5). A cable rack (6) arranged along the longitudinal direction of the cable trench is disposed in the cable trench. The cable rack (6) is installed on the cable rack columns (2). Conductive clamps (1) are installed at corresponding positions on the cable rack columns (2). A copper grounding wire (4) is arranged along the longitudinal direction of the cable trench (5) in the cable trench (5), and the copper grounding wire (4) is clamped in the conductive clamps (1) on the cable rack columns (2).
2. The cable rack structure according to claim 1, wherein: An opening (3) is formed on the conductive clamp (1), and the opening (3) of the conductive clamp (1) is closed and welded after the copper grounding wire (4) is clamped in the conductive clamp (1).
3. A cable rack structure according to claim 1, characterized in that: The cable rack columns (2), the cable racks (6) and the conductive clamps (1) are all made of galvanized steel.
4. A cable rack structure according to claim 1, characterized in that: The conductive clamp (1) is welded to the cable rack column (2).