Flame-retardant overhead insulated wire

Abstract

The utility model relates to the technical field of overhead conductors, and discloses a flame-retardant overhead insulated conductor, which comprises a plurality of conductor inner cores and a flame-retardant layer, tensile ribs are arranged on the side surfaces of the plurality of conductor inner cores, a first reinforcing layer and a second reinforcing layer are arranged on the outer side of the flame-retardant layer, and a plurality of reinforcing members are arranged between the first reinforcing layer and the second reinforcing layer. According to the flame-retardant overhead insulated wire, the tensile ribs stranded with the wire inner cores are arranged on the side surfaces of the plurality of wire inner cores, the first reinforcing layer and the second reinforcing layer are arranged on the outer side of the flame-retardant layer, and the plurality of reinforcing pieces are arranged between the first reinforcing layer and the second reinforcing layer; through the cooperation of the tensile rib twisted with the inner core of the wire, the first reinforcing layer, the second reinforcing layer and the reinforcing member, the mechanical strength of the wire is greatly improved, thereby preventing the wire from being damaged when the wire is blown by wind at high altitude.

Description

TECHNICAL FIELD

[0001] The utility model relates to overhead conductor technical field, concretely is a kind of flame-retardant overhead insulated conductor. BACKGROUND

[0002] Overhead conductor is a kind of cable conductor applied in overhead transmission line, refers to the conductor erected on support structure such as electric pole, iron tower, mainly used in transmission line or distribution line to transmit electric energy, it is isolated from support structure by insulator, exposed in air, is one of the most widely used transmission modes in power system.

[0003] Some overhead conductors on the market: for example, the utility model patent with the authorization announcement No.CN219658403U discloses a kind of corrosion-resistant overhead conductor, the surface of the conductive core of the overhead conductor is fixedly sleeved with insulating rubber, flexible layer is embedded in the inside of insulating rubber, anti-corona film layer is fixedly sleeved on the surface of insulating rubber, flame-retardant layer is fixedly sleeved on the surface of anti-corona film layer, and corrosion-resistant layer is sprayed on the surface of flame-retardant layer, since it is only covered by multilayer structure, the overall structure is relatively single, leading to its mechanical strength is not ideal, when encountering extreme weather in high altitude, it is easily damaged under the blowing of wind force, and needs to be improved.

[0004] Therefore, we propose a kind of flame-retardant overhead insulated conductor to solve the problems raised in the above. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the problems of some overhead conductors at present, since it is only covered by multilayer structure, the overall structure is relatively single, leading to its mechanical strength is not ideal, when encountering extreme weather in high altitude, it is easily damaged under the blowing of wind force, and needs to be improved.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of flame-retardant overhead insulated conductor, comprising: a plurality of conductor inner cores, the side of a plurality of the conductor inner cores is provided with tensile reinforcement, and a plurality of the conductor inner cores are twisted with tensile reinforcement, the outside of the conductor inner core is provided with shielding layer, the shielding layer and the conductor inner core are provided with filling layer, and the outside of the shielding layer is provided with insulating layer, the outside of the insulating layer is provided with flame-retardant layer, the flame-retardant layer is provided with a plurality of filling cavities, the filling cavities are filled with flame retardant, the outside of the flame-retardant layer is provided with first reinforcing layer and second reinforcing layer, a plurality of reinforcing pieces are provided between the first reinforcing layer and the second reinforcing layer, and flame-retardant gas is filled between the first reinforcing layer and the second reinforcing layer, the outside of the second reinforcing layer is provided with flame-retardant sheath.

[0007] Furthermore, the reinforcing member includes a plurality of reinforcing plates fixed between the first reinforcing layer and the second reinforcing layer, and the reinforcing plates are provided with a plurality of triangular side plates on their sides.

[0008] Furthermore, the filling cavity of the flame-retardant layer is configured as a spiral structure.

[0009] Furthermore, the reinforcing plate, the triangular side plate, the first reinforcing layer, and the second reinforcing layer are all made of PVC material.

[0010] Furthermore, the flame-retardant gas is carbon dioxide.

[0011] Furthermore, the flame-retardant sheath is made of neoprene rubber.

[0012] Furthermore, the flame-retardant sheath is coated with a flame-retardant coating layer.

[0013] The beneficial effects of this utility model are as follows: by providing tensile ribs twisted with the inner core of the conductor on the side of multiple conductor cores, and providing a first reinforcing layer and a second reinforcing layer on the outside of the flame-retardant layer, and providing multiple reinforcing members between the first reinforcing layer and the second reinforcing layer, the mechanical strength of the conductor is greatly improved through the cooperation of the tensile ribs twisted with the inner core of the conductor, the first reinforcing layer and the second reinforcing layer, and the reinforcing members, thereby preventing damage when encountering wind at high altitudes. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of the flame-retardant overhead insulated conductor of this utility model;

[0015] Fig. 2 This is a first cross-sectional view of the flame-retardant overhead insulated conductor of this utility model;

[0016] Fig. 3 This is a second cross-sectional view of the flame-retardant overhead insulated conductor of this utility model.

[0017] The names corresponding to each mark in the diagram:

[0018] 1. Inner core of conductor; 2. Tensile reinforcement; 3. Shielding layer; 4. Filling layer; 5. Insulation layer; 6. Flame retardant layer; 7. Flame retardant; 8. First reinforcing layer; 9. Second reinforcing layer; 10. Reinforcing component; 101. Reinforcing plate; 102. Triangular side plate; 11. Flame retardant sheath; 12. Flame retardant coating layer. Detailed Implementation

[0019] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] Embodiments of this utility model:

[0021] like Figs. 1-3 As shown, this utility model provides a flame-retardant overhead insulated conductor, including multiple conductor cores 1. Tensile ribs 2 are provided on the sides of the conductor cores 1, and the conductor cores are twisted together with the tensile ribs 2. The tensile ribs 2 are made of nylon tensile material. This arrangement improves the overall tensile strength of the conductor. A shielding layer 3 is provided on the outside of the conductor cores 1. The shielding layer is made of copper wire braided mesh. A filling layer 4 is provided between the shielding layer 3 and the conductor cores 1. The filling layer 4 is made of asbestos material. An insulation layer 5 is provided on the outside of the shielding layer 3. The insulation layer 5 is made of cross-linked polyethylene material. A flame-retardant layer 6 is provided on the outside of the insulation layer 5. The flame-retardant layer 6 has multiple filling cavities filled with a flame retardant 7, which is aluminum hydroxide powder. The filling cavities of the flame-retardant layer 6 are arranged in a spiral structure, which ensures the uniform distribution of the flame retardant 7. A layer of... A first reinforcing layer 8 and a second reinforcing layer 9 are provided, and a plurality of reinforcing members 10 are provided between the first reinforcing layer 8 and the second reinforcing layer 9. Each reinforcing member 10 includes a plurality of reinforcing plates 101 fixed between the first reinforcing layer 8 and the second reinforcing layer 9. A plurality of triangular side plates 102 are provided on the side of each reinforcing plate 101. Through the cooperation of the first reinforcing layer 8, the second reinforcing layer 9, and the reinforcing members 10, the mechanical strength is improved. A flame-retardant gas, which is carbon dioxide, is filled between the first reinforcing layer 8 and the second reinforcing layer 9. The reinforcing plates 101, the triangular side plates 102, the first reinforcing layer 8, and the second reinforcing layer 9 are all made of PVC material. A flame-retardant sheath 11 is provided on the outside of the second reinforcing layer 9. The flame-retardant sheath 11 is made of neoprene rubber, and a flame-retardant coating layer 12 is coated on the surface of the flame-retardant sheath 11. The flame-retardant coating layer 12 is a silicate flame-retardant coating, which further improves the flame-retardant performance.

[0022] Specifically, tensile ribs 2 are provided on the sides of multiple conductor cores 1 and twisted with the conductor cores 1. By using tensile ribs 2 made of nylon tensile material to twist with the conductor cores 1, the tensile performance is greatly improved. A first reinforcing layer 8 and a second reinforcing layer 9 are provided on the outside of the flame-retardant layer 6. Multiple reinforcing members 10 are provided between the first reinforcing layer 8 and the second reinforcing layer 9. The composite structure of the first reinforcing layer 8 and the second reinforcing layer 9 made of PVC material and the reinforcing members 10 improves the mechanical strength and effectively prevents the conductor from being damaged or fatigued when blown by high-altitude winds. The flame-retardant 7 made of aluminum hydroxide powder is filled in the filling cavity of the flame-retardant layer 6, and carbon dioxide flame-retardant gas is filled between the first reinforcing layer 8 and the second reinforcing layer 9. A flame-retardant coating layer 12 is coated on the surface of the flame-retardant sheath 11 made of neoprene rubber, which also ensures the flame-retardant performance of the conductor.

[0023] It should be understood that in this utility model, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three or more, and "and / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" can represent three cases: only A exists, only B exists, and A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A flame-retardant overhead insulated conductor, characterized in that, include: Multiple conductor cores (1) are provided with tensile ribs (2) on the sides of the multiple conductor cores (1), and the multiple conductor cores are twisted with the tensile ribs (2). A shielding layer (3) is provided on the outside of the conductor cores (1). A filling layer (4) is provided between the shielding layer (3) and the conductor cores (1). An insulation layer (5) is provided on the outside of the shielding layer (3). A flame-retardant layer (6) is provided on the outside of the insulation layer (5). Multiple filling cavities are provided in the flame-retardant layer (6). Flame retardant (7) is filled in the filling cavities. A first reinforcing layer (8) and a second reinforcing layer (9) are provided on the outside of the flame-retardant layer (6). Multiple reinforcing members (10) are provided between the first reinforcing layer (8) and the second reinforcing layer (9). Flame-retardant gas is filled between the first reinforcing layer (8) and the second reinforcing layer (9). A flame-retardant sheath (11) is provided on the outside of the second reinforcing layer (9).

2. The flame-retardant overhead insulated conductor according to claim 1, characterized in that: The reinforcing member (10) includes a plurality of reinforcing plates (101) fixed between the first reinforcing layer (8) and the second reinforcing layer (9), and the reinforcing plates (101) are provided with a plurality of triangular side plates (102) on their sides.

3. The flame-retardant overhead insulated conductor according to claim 1, characterized in that: The filling cavity of the flame-retardant layer (6) is configured as a spiral structure.

4. The flame-retardant overhead insulated conductor according to claim 2, characterized in that: The reinforcing plate (101), the triangular side plate (102), the first reinforcing layer (8), and the second reinforcing layer (9) are all made of PVC material.

5. The flame-retardant overhead insulated conductor according to claim 1, characterized in that: The flame-retardant gas used is carbon dioxide.

6. The flame-retardant overhead insulated conductor according to claim 1, characterized in that: The flame-retardant sheath (11) is made of neoprene rubber.

7. A flame-retardant overhead insulated conductor according to claim 6, characterized in that: The flame-retardant sheath (11) is coated with a flame-retardant coating layer (12).

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