Vibration reduction overhead conductor of aluminum-clad steel core aluminum alloy stranded wire

Abstract

The utility model discloses a vibration-damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire, which comprises an inner conductor, an outer conductor, a shielding layer, a steel belt layer, an insulating layer, a steel wire, a dry powder extinguishing agent and a flame-retardant coating, the outer conductor is arranged outside the inner conductor, the shielding layer is arranged outside the outer conductor, the steel belt layer is arranged outside the shielding layer, and the insulating layer is arranged outside the steel belt layer. The insulating layer comprises an inner sheath arranged outside the steel belt layer and an outer sheath inserted outside the inner sheath, the steel wires are inserted inside the insulating layer, the dry powder extinguishing agent is filled inside the insulating layer, and the flame-retardant coating is arranged outside the shielding layer, the steel belt layer and the insulating layer. According to the utility model, by arranging the dry powder extinguishing agent and the flame-retardant coating, the effect of delaying fire behavior is realized without influencing the use of the overhead conductor, and meanwhile, by arranging the steel belt layer and the steel wires, the overhead conductor has higher corrosion resistance and external force resistance, and can be safely operated in a severe environment to protect the internal structure of the conductor from being damaged by external machinery.

Description

Technical Field

[0001] The utility model relates to the technical field of damping overhead conductors, and particularly relates to a damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire. Background Art

[0002] The damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire is a conductor designed by combining the advantages of an aluminum-clad steel core and an aluminum alloy stranded wire, aiming to improve the damping performance, power transmission efficiency and corrosion resistance of the conductor. The damping principle of the conductor is mainly based on its unique structural design. By making the natural vibration frequencies of each layer of aluminum alloy wire and the aluminum-clad steel core different, mutual interference will occur between them, thereby automatically consuming the energy of wind-induced vibration and achieving the damping effect. This design not only reduces the vibration amplitude of the conductor in the wind, but also improves the stability and service life of the conductor. However, when the existing damping overhead conductors have problems such as power overload, poor contact, short circuit, etc., they will catch fire. Due to the poor flame retardant effect, the speed of the fire will be fast and it is not easy to extinguish the fire, there are certain deficiencies. For this reason, we propose a damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire. Content of the Utility Model

[0003] Therefore, the purpose of the utility model is to provide a damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire. By setting dry powder fire extinguishing agent and flame retardant coating, the effect of delaying the fire is achieved without affecting the use of the overhead conductor. At the same time, by setting a steel strip layer and steel wires, it has high corrosion resistance and anti-extrusion ability, and can operate safely in harsh environments to protect the internal structure of the conductor from external mechanical damage.

[0004] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solutions:

[0005] A damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire, comprising:

[0006] Inner conductor;

[0007] Outer conductor, arranged outside the inner conductor;

[0008] Shielding layer, arranged outside the outer conductor;

[0009] Steel strip layer, arranged outside the shielding layer;

[0010] Insulation layer, including an inner sheath arranged outside the steel strip layer and an outer sheath interspersed outside the inner sheath;

[0011] Steel wire, interspersed inside the insulation layer;

[0012] Dry powder fire extinguishing agent, filled inside the insulation layer;

[0013] A flame-retardant coating is provided on the outside of the shielding layer, steel strip layer and insulating layer.

[0014] As a preferred solution of the damping overhead conductor of the aluminum-clad steel core aluminum alloy stranded wire described in the present invention, the inner conductor is an aluminum-clad steel core.

[0015] As a preferred solution of the damping overhead conductor of the aluminum-clad steel core aluminum alloy stranded wire described in the present invention, the outer conductor is an aluminum alloy stranded wire.

[0016] As a preferred solution of the damping overhead conductor of the aluminum-clad steel core aluminum alloy stranded wire described in the present invention, the shielding layer is woven from copper wires.

[0017] As a preferred solution of the damping overhead conductor of the aluminum-clad steel core aluminum alloy stranded wire described in the present invention, the inner sheath and the outer sheath are provided with first through holes for inserting steel wires, and the inner sheath and the outer sheath are provided with second through holes for filling dry powder fire extinguishing agent.

[0018] As a preferred solution of the damping overhead conductor of the aluminum-clad steel core aluminum alloy stranded wire described in the present invention, the flame-retardant coating is sprayed with a flame-retardant paint.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing dry powder fire extinguishing agent and flame-retardant coating, the effect of delaying the fire is achieved without affecting the use of the overhead conductor. At the same time, by providing a steel strip layer and steel wires, it has high corrosion resistance and anti-extrusion ability, and can operate safely in harsh environments to protect the internal structure of the conductor from external mechanical damage. When in use, the flame-retardant coating on the outside of the shielding layer, steel strip layer and insulating layer can be gradually flame-retarded to delay the fire. When burning to the insulating layer, the dry powder fire extinguishing agent inside the insulating layer can further retard the fire, achieving a good flame-retardant effect for fire extinguishing. Then, several steel wires can initially resist external forces, and then the steel strip layer can further resist external forces, achieving a good resistance effect, protecting the internal structure of the conductor from external mechanical damage, and at the same time improving corrosion resistance for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0021] Figure 1Schematic three-dimensional view of a vibration-damping overhead conductor made of an aluminum-clad steel core aluminum alloy stranded wire according to the present utility model;

[0022] Figure 2 Front view schematic of a vibration-damping overhead conductor made of an aluminum-clad steel core aluminum alloy stranded wire according to the present utility model;

[0023] Figure 3 A vibration-damping overhead conductor made of an aluminum-clad steel core aluminum alloy stranded wire according to the present utility model Figure 1 Schematic diagram of the structure of the shielding layer, steel strip layer and insulating layer in the present utility model.

[0024] In the figure: 100, inner conductor; 200, outer conductor; 300, shielding layer; 400, steel strip layer; 500, insulating layer; 501, inner sheath; 502, outer sheath; 503, first through hole; 504, second through hole; 600, steel wire; 700, dry powder fire extinguishing agent; 800, flame retardant coating. Detailed implementation manners

[0025] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0027] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the implementation manners of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally not in half scale, and the schematic diagrams are only examples, which should not limit the protection scope of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0028] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following will further describe in detail the implementation manners of the present utility model with reference to the accompanying drawings.

[0029] The present utility model provides a vibration-damping overhead conductor made of an aluminum-clad steel core aluminum alloy stranded wire. By setting a dry powder fire extinguishing agent and a flame retardant coating, the effect of delaying the fire is achieved without affecting the use of the overhead conductor. At the same time, by setting a steel strip layer and steel wires, it has high corrosion resistance and anti-extrusion ability, and can operate safely in harsh environments to protect the internal structure of the conductor from external mechanical damage.

[0030] Figures 1-3Shown is a schematic diagram of the overall structure of an embodiment of a vibration-damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire of the present utility model. Please refer to Figures 1-3 The main part of a vibration-damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire in this embodiment includes: an inner conductor 100, an outer conductor 200, a shielding layer 300, a steel strip layer 400, an insulating layer 500, steel wires 600, dry powder fire extinguishing agent 700, and a flame-retardant coating 800.

[0031] Specifically, the inner conductor 100 is an aluminum-clad steel core. When in use, the outside of the structure is an aluminum layer and the inside is a steel core. Aluminum is a good conductor with a low resistivity and can effectively conduct current. Although steel itself is not the most ideal conductor, in the structure of the aluminum-clad steel core, the steel core mainly plays a role in enhancing the mechanical strength of the wire and does not directly participate in the conduction of current.

[0032] Specifically, the outer conductor 200 is arranged outside the inner conductor 100. The outer conductor 200 is an aluminum alloy stranded wire. When in use, the aluminum alloy of the aluminum alloy stranded wire is an alloy formed by mixing aluminum with other metal elements (such as copper, magnesium, zinc, etc.) in a certain proportion, and the aluminum alloy inherits the excellent electrical conductivity of aluminum.

[0033] Specifically, the shielding layer 300 is arranged outside the outer conductor 200. The shielding layer 300 is woven from copper wires. When in use, the shielding layer 300 plays a shielding effect for the wire to transmit.

[0034] Specifically, the steel strip layer 400 is arranged outside the shielding layer 300. When in use, the steel strip layer 400 plays a protective effect, can protect the internal structure of the wire from external mechanical damage, and at the same time improves the corrosion resistance for use.

[0035] Specifically, the insulating layer 500 includes an inner sheath 501 arranged outside the steel strip layer 400 and an outer sheath 502 interspersed outside the inner sheath 501. The inner sheath 501 and the outer sheath 502 are provided with first through holes 503 for interspersing the steel wires 600, and the inner sheath 501 and the outer sheath 502 are provided with second through holes 504 for filling the dry powder fire extinguishing agent 700. When in use, the inner sheath 501 and the outer sheath 502 can protect the inner conductor 100 and the outer conductor 200 from external interference, improve the corrosion resistance and weather resistance of the wire, facilitate the installation of the steel wires 600 through the first through holes 503, and facilitate the filling of the dry powder fire extinguishing agent 700 through the second through holes 504.

[0036] Specifically, the steel wires 600 are interspersed inside the insulating layer 500. When in use, several steel wires 600 can initially resist external forces and protect the internal structure of the wire from external mechanical damage.

[0037] Specifically, the dry powder fire extinguishing agent 700 is filled inside the insulating layer 500. During use, since the dry powder fire extinguishing agent 700 does not burn, it can further retard the flame, achieving a good flame retardant effect for fire extinguishing.

[0038] Specifically, the flame retardant coating 800 is provided on the outer sides of the shielding layer 300, the steel strip layer 400, and the insulating layer 500. The flame retardant coating 800 is sprayed with a flame retardant paint. During use, the flame retardant coating 800 on the outer sides of the steel strip layer 400 and the insulating layer 500 can gradually retard the flame and delay the spread of the fire.

[0039] Combined Figures 1-3 , for a vibration damping overhead conductor of an aluminum-clad steel core aluminum alloy stranded wire according to this embodiment, during specific use, the flame retardant coating 800 on the outer sides of the shielding layer 300, the steel strip layer 400, and the insulating layer 500 can gradually retard the flame and delay the spread of the fire. When the fire burns to the insulating layer 500, the dry powder fire extinguishing agent 700 inside the insulating layer 500 can further retard the flame, achieving a good flame retardant effect for fire extinguishing. Then, several steel wires 600 can initially resist external forces, and subsequently, the steel strip layer 400 can further resist external forces, achieving a good resistance effect, protecting the internal structure of the wire from external mechanical damage, and improving the corrosion resistance for use.

[0040] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire, characterized in that: include: Inner conductor (100); An outer conductor (200) arranged outside the inner conductor (100); A shielding layer (300) arranged outside the outer conductor (200); A steel belt layer (400) arranged outside the shielding layer (300); An insulating layer (500) comprising an inner sheath (501) arranged outside the steel strip layer (400) and an outer sheath (502) inserted outside the inner sheath (501); Steel wires (600) inserted into the interior of the insulating layer (500); A dry powder fire extinguishing agent (700) is filled inside the insulating layer (500); A flame retardant coating (800) is arranged outside the shielding layer (300), the steel strip layer (400) and the insulating layer (500).

2. The vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire according to claim 1, characterized in that: The inner conductor (100) is an aluminum-clad steel core.

3. The vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire according to claim 2, characterized in that: The outer conductor (200) is an aluminum alloy stranded wire.

4. The vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire according to claim 3, characterized in that: The shielding layer (300) is woven from copper wires.

5. The vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire according to claim 4, characterized in that: The inner sheath (501) and the outer sheath (502) are provided with a first through hole (503) for inserting the steel wire (600), and the inner sheath (501) and the outer sheath (502) are provided with a second through hole (504) for filling a dry powder fire extinguishing agent (700).

6. The vibration-damping overhead conductor of aluminum-clad steel core aluminum alloy stranded wire according to claim 5, characterized in that: The flame retardant coating (800) is formed by spraying a flame retardant paint.

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