CN217386721U

CN217386721U - Insulated cable

Info

Publication number: CN217386721U
Application number: CN202220529818.2U
Authority: CN
Inventors: 陆新华
Original assignee: Zhejiang Jixin Cable Co ltd
Current assignee: Zhejiang Jixin Cable Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-09-06
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses an insulated cable, which comprises a cable body, wherein a support frame, a first conductive core, a second conductive core, a reinforcing core and an optical cable are arranged inside the cable body; the middle of the support frame is provided with a central tube, and the optical cable is arranged in the central tube; a plurality of uniformly distributed partition surfaces are arranged on the outer side of the central tube, the partition surfaces are spirally fixed on the outer circumference of the central tube, first arc-shaped grooves are formed in the partition surfaces, and second arc-shaped grooves are connected between every two adjacent first arc-shaped grooves; the reinforced core is arranged in the adjacent partition faces, the first conductive core and the second conductive core are arranged in the first arc-shaped groove and the second arc-shaped groove, and the insulating layer, the flame-retardant layer, the moisture-proof layer, the outer sheath and the ultraviolet-resistant layer are wrapped on the outer sides of the first conductive core and the second conductive core. The utility model utilizes the support frame to enhance the toughness and the deformation resistance of the cable, and prevents the cable from deforming under the action of external force; the dampproof course can adsorb the moisture, prevents that the cable from weing ageing, prolongs the life of cable.

Description

Insulated cable

Technical Field

The utility model relates to a wire and cable technical field, in particular to insulated cable.

Background

The aerial insulated cable is a cable with an insulating protective layer and erected in the air, is single-core, and can be divided into a duralumin wire structure, a harddrawing copper wire structure, an aluminum alloy wire structure, a steel core or aluminum alloy core supporting structure, a self-supporting three-core threaded structure (the wire core can be duralumin or duralumin wire) and the like according to different structures. The overhead insulated cable has the characteristics of high reliability, good safety, convenience in maintenance and the like, and is more and more widely used. With the rapid development of economy, the demand on electric energy also sharply increases, the demand on electric power is on a continuous increasing trend due to the increase of power users and the diversification of power utilization facilities, and the receiving end of an urban power distribution network bears larger load.

In order to meet the increasing power consumption requirements, the capacity increasing of the overhead cable is needed, but the capacity increasing effect of the existing overhead insulated cable is insufficient, so that the power consumption of users is easily influenced, and the practicability of the cable is reduced. Simultaneously, among the aerial insulated cable use, because the cable exposes in the outside air for a long time, rainwater and moisture in the weather corrode the inside of cable easily, the cable is wet ageing easily, and because natural factors such as wind-force can cause the cable to warp, leads to the inside conductive core of cable to break easily, leads to cable life to hang down.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a moisture resistance is good, but the increase-volume, conveniently erects the insulated cable who uses aloft.

Therefore, the technical scheme of the utility model is that: an insulated cable comprises a cable body, wherein a support frame, a first conductive core, a second conductive core, a reinforcing core and an optical cable are arranged in the cable body; the middle of the support frame is provided with a central tube, and the optical cable is arranged in the central tube; a plurality of uniformly distributed partition surfaces are arranged on the outer side of the central tube, the partition surfaces are spirally fixed on the outer circumference of the central tube, first arc-shaped grooves are formed in the partition surfaces, and second arc-shaped grooves are connected between every two adjacent first arc-shaped grooves; the first arc-shaped groove and the second arc-shaped groove are both of a spiral structure; a reinforcing core is arranged in the adjacent separating surfaces, a first conductive core is arranged in the first arc-shaped groove, and a second conductive core is arranged in the second arc-shaped groove; the outer sides of the first conductive core and the second conductive core are wrapped with insulating layers, and the outer sides of the insulating layers are sequentially provided with a flame-retardant layer, a moisture-proof layer, an outer sheath and an ultraviolet-resistant layer.

The utility model utilizes the support frame to separate the internal structure of the cable body, the optical cable is placed in the central tube, the central tube can prevent the optical cable from being extruded, and the stability of the communication channel is ensured; the middle part utilizes a separation surface to isolate each reinforced core, and the reinforced cores adopt aluminum-clad steel wires, so that the bearing capacity of the cable can be improved, the capacity can be effectively increased, and the power consumption requirement can be met; the outside sets up the first conductive core and the second conductive core of transposition, and the first conductive core can increase the sectional area with the second conductive core, improves the current-carrying capacity of this cable, is convenient for improve holistic transport capacity.

Preferably, the support frame is made of rubber, the separation surface is of a hollow structure, and the central angle of the first arc-shaped groove is smaller than that of the second arc-shaped groove. The support frame chooses the rubber material for the support frame has toughness and resistance to deformation, can avoid the cable to receive natural factors such as wind-force and warp, improves the life of cable.

Preferably, the first conductive core and the second conductive core are aluminum wires, the reinforcing core is an aluminum-clad steel wire, and the diameter of the first conductive core is smaller than that of the second conductive core; the first conductive cores and the second conductive cores are arranged in a staggered mode, the first conductive cores are tangent to the second conductive cores, and the first conductive cores and the second conductive cores are twisted outside the supporting frame. The aluminum-clad steel wire is selected for the reinforcing core, the weight of the stranded wire can be reduced, the current-carrying capacity is improved, the power loss is reduced, the anti-corrosion performance is good, the service life is long, the structure is simple, the erection and maintenance are convenient, and the transmission capacity is large.

Preferably, the insulating layer is made of cross-linked polyethylene, and the flame-retardant layer is made of chlorosulfonated polyethylene. The chlorosulfonated polyethylene material has better physical and mechanical properties, aging resistance, heat resistance, low temperature resistance, oil resistance, flame resistance, wear resistance and electric insulation resistance.

Preferably, the moisture-proof layer is internally provided with moisture-proof particles, the outer sheath is made of hydrogenated nitrile rubber, and the ultraviolet-resistant layer is formed by spraying an ultraviolet-resistant coating. The dampproof course can adsorb the moisture, avoids the cable to wet ageing, and the ultraviolet resistance layer can effectively keep out the ultraviolet ray, extension cable life.

Preferably, the optical cable comprises a plurality of fiber cores, a filling layer and a soft sleeve, wherein the fiber cores are arranged in parallel, the filling layer wraps the outer sides of the fiber cores, and the soft sleeve wraps the outer wall of the filling layer. The soft sleeve and the filling layer can effectively protect the fiber core and prevent the fiber core from being damaged, and the fiber core can provide a channel for optical communication and is convenient for realizing the remote communication problem.

Compared with the prior art, the beneficial effects of the utility model are that: the support frame is utilized to enhance the toughness and the deformation resistance of the cable, prevent the cable from deforming under the action of external force and prolong the service life of the cable; the supporting frame can prevent the optical cable from being extruded, and the stability of a communication channel is ensured; the reinforced core is made of the aluminum-clad steel wire, so that the bearing capacity of the cable can be improved, the capacity can be effectively increased, and the power consumption requirement can be met; the first conductive core and the second conductive core are different in diameter and are arranged in a tangent mode, so that the sectional area can be increased, the current-carrying capacity of the cable is improved, and the whole conveying capacity is improved conveniently; the moisture-proof layer can absorb moisture, so that the cable is prevented from being affected with moisture and aging; the anti ultraviolet layer can effectively resist ultraviolet rays, and the service life of the cable is prolonged.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

Fig. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the support frame of the present invention;

FIG. 3 is a radial cross-sectional view of the support frame of the present invention;

fig. 4 is a schematic cross-sectional view of the cable of the present invention.

Labeled as: the cable comprises a first conductive core 1, a second conductive core 2, a reinforcing core 3, an optical cable 4, a fiber core 41, a filling layer 42, a soft sleeve 43, a support frame 5, a central tube 51, a separating surface 52, a first arc-shaped groove 53, a second arc-shaped groove 54, an insulating layer 6, a flame-retardant layer 7, a moisture-proof layer 8, an outer sheath 9 and an ultraviolet-resistant layer 10.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

See the drawings. This embodiment insulated cable, including the cable body, the inside support frame 5, first electrically conductive core 1, the electrically conductive core 2 of second, enhancement core 3 and the optical cable 4 of being equipped with of cable body.

The support frame 5 is made of rubber, so that the support frame has toughness and deformation resistance, the cable can be prevented from being deformed by natural factors such as wind power, and the service life of the cable is prolonged. The support frame comprises a three-layer structure, a central tube 51 is arranged in the middle of the support frame, and the optical cable 4 is arranged in the central tube 51; the outer side of the central tube 51 is provided with 6 separating surfaces 52 which are of hollow structures and spiral in shape, the outer circumference of the central tube 51 is provided with the reinforcing cores 3, the reinforcing cores 3 are wound on the outer side of the central tube 51 and are aluminum-clad steel wires, so that the bearing capacity of the cable can be improved, effective capacity increasing is performed, and the power consumption requirement is met.

The separating surface 52 is provided with first arc-shaped grooves 53, and second arc-shaped grooves 54 are connected between adjacent first arc-shaped grooves 53; the first arc-shaped groove 53 and the second arc-shaped groove 54 are spiral in the axial direction, and the radian of the first arc-shaped groove 53 is smaller than that of the second arc-shaped groove 54; a first conductive core 1 is placed in the first arc-shaped groove 53, and a second conductive core 2 is placed in the second arc-shaped groove 54; the first conductive core 1 and the second conductive core 2 are aluminum wires, the reinforcing core is an aluminum-clad steel wire, and the diameter of the first conductive core is smaller than that of the second conductive core; the first conductive cores and the second conductive cores are arranged in a staggered mode, the first conductive cores are tangent to the second conductive cores and are twisted outside the supporting frame, the sectional area is increased, and the current-carrying capacity is improved.

The optical cable 4 comprises a plurality of fiber cores 41, a filling layer 42 and a soft sleeve 43, wherein the fiber cores are arranged in parallel, the filling layer is wrapped on the outer side of the fiber cores, and the soft sleeve is wrapped on the outer wall of the filling layer. The soft sleeve and the filling layer can effectively protect the fiber core, the fiber core is prevented from being damaged, the fiber core can provide a channel for optical communication, and the remote communication problem is convenient to realize.

The outside parcel of first electrically conductive core 1 and second electrically conductive core 2 has insulating layer 6, and the insulating layer is the crosslinked polyethylene material, and the insulating layer 6 outside is equipped with fire-retardant layer 7 in proper order, and fire-retardant layer is made by chlorosulfonated polyethylene material. The chlorosulfonated polyethylene material has better physical and mechanical properties, aging resistance, heat resistance, low temperature resistance, oil resistance, flame resistance, wear resistance and electric insulation resistance. The outer side of the insulating layer 7 is provided with a moisture-proof layer 8, and moisture-proof particles are arranged in the moisture-proof layer, so that moisture can be absorbed, and the cable is prevented from being aged due to moisture; the outer side of the moisture-proof layer 8 is provided with an outer sheath 9 which is made of hydrogenated nitrile rubber and has the characteristics of good heat resistance, high temperature resistance, high pressure resistance, oxygen resistance and the like; the outer side of the outer sheath 9 is provided with an ultraviolet-resistant layer 10 which is formed by spraying an ultraviolet-resistant coating and can effectively resist ultraviolet rays and prolong the service life of the cable.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An insulated cable, includes the cable body, its characterized in that: a support frame, a first conductive core, a second conductive core, a reinforcing core and an optical cable are arranged in the cable body; the supporting frame comprises a three-layer structure, a central tube is arranged in the middle of the supporting frame, and the optical cable is arranged in the central tube; a plurality of uniformly distributed partition surfaces are arranged on the outer side of the central tube, the partition surfaces are spirally fixed on the outer circumference of the central tube, first arc-shaped grooves are formed in the partition surfaces, and second arc-shaped grooves are connected between every two adjacent first arc-shaped grooves; the first arc-shaped groove and the second arc-shaped groove are both of a spiral structure; a reinforcing core is arranged in the adjacent separating surfaces, a first conductive core is arranged in the first arc-shaped groove, and a second conductive core is arranged in the second arc-shaped groove; the outer sides of the first conductive core and the second conductive core are wrapped with insulating layers, and the outer sides of the insulating layers are sequentially provided with a flame-retardant layer, a moisture-proof layer, an outer sheath and an anti-ultraviolet layer.

2. An insulated electrical cable as claimed in claim 1, wherein: the supporting frame is made of rubber, the separating surface is of a hollow structure, and the central angle of the first arc-shaped groove is smaller than that of the second arc-shaped groove.

3. An insulated electrical cable as claimed in claim 1, wherein: the first conductive core and the second conductive core are aluminum wires, the reinforcing core is an aluminum-clad steel wire, and the diameter of the first conductive core is smaller than that of the second conductive core; the first conductive cores and the second conductive cores are arranged in a staggered mode, the first conductive cores are tangent to the second conductive cores, and the first conductive cores and the second conductive cores are twisted outside the supporting frame.

4. An insulated electrical cable as claimed in claim 1, wherein: the insulating layer is made of cross-linked polyethylene, and the flame-retardant layer is made of chlorosulfonated polyethylene.

5. An insulated electrical cable as claimed in claim 1, wherein: the moisture-proof layer is internally provided with moisture-proof particles, the outer sheath is made of hydrogenated nitrile rubber, and the ultraviolet-proof layer is formed by spraying an ultraviolet-proof coating.

6. An insulated electrical cable as claimed in claim 1, wherein: the optical cable comprises a plurality of fiber cores, a filling layer and soft sleeves, wherein the fiber cores are arranged in parallel, the filling layer wraps the outer sides of the fiber cores, and the soft sleeves wrap the outer walls of the filling layer.