Hollow expanded diameter conductor

Abstract

The invention relates to the technical field of wires, in particular to a hollow expanded-diameter wire which comprises a polyurethane material layer, the outer wall of the polyurethane material layer is wrapped with a plurality of first trapezoidal hollow monofilaments which are evenly distributed, the first trapezoidal hollow monofilaments are arranged in an attached mode, and the outer walls of the first trapezoidal hollow monofilaments are attached with a plurality of second trapezoidal hollow monofilaments which are evenly distributed. The multiple second trapezoidal hollow monofilaments are arranged in an attached mode. The first trapezoid hollow monofilaments form a first layer of diameter expansion, then the second trapezoid hollow monofilaments are arranged on the outer walls of the first hollow monofilaments in a staggered mode, the first trapezoid hollow monofilaments and the second trapezoid hollow monofilaments are used for diameter expansion, and the attachment degree is improved advantageously; the first reinforcing steel cores and the second reinforcing steel cores are arranged between the adjacent first trapezoidal hollow monofilaments and between the adjacent second trapezoidal hollow monofilaments, so that the overall structural strength is improved, and the cable has good fireproof and heat-conducting properties and is high in mechanical strength and tensile property.

Description

Technical Field

[0001] The invention relates to the technical field of wires, in particular to a hollow expanded-diameter wire. Background Art

[0002] Expanded conductors refer to conductors with enlarged outer diameters compared to round wire concentric stranded overhead conductors with basically the same cross-section. There are many types of expanded conductors with large structural differences, but they can be divided into two categories according to their uses: for substations and for transmission lines. Expanded conductors have the following characteristics:

[0003] (1) Compared with conventional conductors of the same cross-section, the expanded-diameter conductor has a larger outer diameter, which reduces the corona loss, and also reduces the radio interference and audible noise derived from the corona, effectively improving the electromagnetic environment and benefiting environmental protection.

[0004] (2) Compared with conventional conductors of the same outer diameter, the expanded-diameter conductor has a smaller aluminum cross-section, which saves aluminum and reduces the weight of the conductor. This not only reduces the amount of wire used, but also reduces the steel consumption of the tower due to the reduced tower load, thereby reducing the investment in transmission line projects.

[0005] However, the existing traditional hollow expanded diameter conductor has poor structural stability. Therefore, we propose a hollow expanded diameter conductor. Summary of the invention

[0006] The purpose of the present invention is to provide a hollow expanded-diameter conductor, which solves the problems raised in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a hollow expanded diameter conductor, comprising a polyurethane material layer, the outer wall of the polyurethane material layer is wrapped with a plurality of uniformly distributed first trapezoidal hollow monofilaments, the plurality of the first trapezoidal hollow monofilaments are bonded together, the outer wall of the first trapezoidal hollow monofilament is bonded with a plurality of uniformly distributed second trapezoidal hollow monofilaments, the plurality of the second trapezoidal hollow monofilaments are bonded together;

[0008] The outer wall of the second trapezoidal hollow monofilament is sheathed with a fireproof layer, the outer wall of the fireproof layer is sheathed with a heat-conducting layer, and the outer wall of the heat-conducting layer is sheathed with a wear-resistant and corrosion-resistant insulating layer.

[0009] By adopting the above technical solution, a plurality of first trapezoidal hollow monofilaments are included in the outer wall of the polyurethane material layer to form a first layer of diameter expansion, a plurality of second trapezoidal hollow monofilaments are included in the outer wall of the first trapezoidal hollow monofilament to form a second layer of diameter expansion, the first trapezoidal hollow monofilament and the second trapezoidal hollow monofilament are staggered, and the first trapezoidal hollow monofilament and the second trapezoidal hollow monofilament are used to expand the diameter, which is beneficial to improving the fit, and thus is beneficial to improving the stability of the structure;

[0010] And by adding a fireproof layer, the use of the fireproof layer can significantly reduce the probability of fire and the damage caused by fire. When a fire occurs, the fireproof layer can reduce the damage to the surrounding environment and equipment, and protect the safety of personnel and equipment. The thermal conductive layer can reduce the temperature inside the cable, thereby protecting the various structural layers of the cable and extending the service life of the cable. The wear-resistant and corrosion-resistant insulation layer can enhance the durability of the cable, so that it can still maintain good performance in various harsh environments, and has good chemical corrosion resistance, water resistance and weather resistance.

[0011] As a preferred embodiment of the present invention, the fireproof layer is a magnesium oxide fireproof layer, and a plurality of evenly distributed integrally formed protrusions are fixed to the outer wall of the fireproof layer, and the protrusions penetrate the heat conductive layer;

[0012] The magnesium oxide fireproof layer has a high melting point, can maintain a long working state at high temperature, and has good fireproof performance. The heat generated inside the wire can be transferred to the fireproof layer, and multiple protrusions are used to contact the thermal conductive layer, which is beneficial to improve the heat transfer effect, and then help improve the thermal conductivity effect.

[0013] As a preferred embodiment of the present invention, a silicone grease layer is fixed to the inner wall of the fireproof layer;

[0014] The silicone grease layer has good thermal conductivity, which helps to improve the efficiency of heat transfer inside the wire, and then helps to improve the heat dissipation performance. At the same time, silicone grease has good insulation properties, which can improve the insulation strength of the cable and reduce the possibility of electrical failure.

[0015] As a preferred embodiment of the present invention, the heat-conducting layer is a heat-conducting silicone layer;

[0016] Thermal conductive silicone is a high-performance thermal conductive material with good insulation and temperature resistance. It can improve the heat dissipation efficiency of the cable while ensuring insulation.

[0017] As a preferred embodiment of the present invention, the wear-resistant and corrosion-resistant insulating layer comprises:

[0018] a first insulating layer and a second insulating layer, wherein the first insulating layer is a first carbon fiber layer, and the second insulating layer is a polyvinyl chloride layer;

[0019] The first carbon fiber layer can form a tighter wrapping for the material within the second insulating layer, thereby achieving high compactness and improving the mechanical strength and wear resistance of the conductor. The polyvinyl chloride layer can then improve insulation, corrosion resistance and mechanical strength, and has strong plasticity.

[0020] As a preferred embodiment of the present invention, a second carbon fiber layer is provided in the inner cavity of the second insulating layer;

[0021] The second carbon fiber layer is woven in a grid format, which can further improve the mechanical strength, and improve the mechanical strength in the entire horizontal and vertical directions of the conductor.

[0022] As a preferred embodiment of the present invention, the outer wall of the second insulating layer is coated with a metal inorganic coating;

[0023] It has high efficiency and long-term protection, is resistant to UV aging, and is suitable for indoor and outdoor environments that are resistant to moisture, salt spray and other chemical gas corrosion environments.

[0024] As a preferred embodiment of the present invention, a first reinforcing steel core is installed between two adjacent first trapezoidal hollow monofilaments.

[0025] By adopting the above technical solution and setting the first reinforcing steel core, the connection strength between the first trapezoidal hollow monofilaments can be improved.

[0026] As a preferred embodiment of the present invention, a second reinforcing steel core is installed between two adjacent second trapezoidal hollow monofilaments.

[0027] By adopting the above technical solution and providing the second reinforcing steel core, the connection strength between the second trapezoidal hollow monofilaments can be improved.

[0028] As a preferred embodiment of the present invention, a light unit is installed in the polyurethane material layer.

[0029] By adopting the above technical solution, the optical unit is an optical fiber, thereby being able to increase the communication function.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] A hollow expanded diameter conductor of the technical solution of the present application is formed by a plurality of first trapezoidal hollow monofilaments to form a first layer of expansion, and then a plurality of second trapezoidal hollow monofilaments are used, including on the outer wall of the first hollow monofilament, staggered, and the first trapezoidal hollow monofilament and the second trapezoidal hollow monofilament are used to expand the diameter, which is beneficial to improve the fit, and a first reinforced steel core and a second reinforced steel core are arranged between adjacent first trapezoidal hollow monofilaments and adjacent second trapezoidal hollow monofilaments, which is beneficial to improve the overall structural strength;

[0032] The heat-resistant polyurethane material is provided with an optical unit, thereby realizing the addition of a communication function;

[0033] By adding a fireproof layer, the use of the fireproof layer can significantly reduce the probability of fire and the damage caused by fire. When a fire occurs, the fireproof layer can reduce the damage to the surrounding environment and equipment, and protect the safety of personnel and equipment. The thermal conductive layer can reduce the temperature inside the cable, thereby protecting the various structural layers of the cable and extending the service life of the cable. The wear-resistant and corrosion-resistant insulation layer can enhance the durability of the cable, so that it can still maintain good performance in various harsh environments, and has good chemical corrosion resistance, water resistance and weather resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0035] Figure 1 It is a schematic diagram of the overall structure of a hollow expanded diameter conductor of the present invention;

[0036] Figure 2 This is a schematic diagram of the fireproof layer structure of a hollow expanded diameter conductor of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the wear-resistant and corrosion-resistant layer of a hollow expanded-diameter conductor of the present invention;

[0038] Figure 4 The figure is a schematic diagram of the heat-conducting layer structure of a hollow expanded-diameter conductor of the present invention.

[0039] In the figure:

[0040] 1. Polyurethane material layer; 11. First trapezoidal hollow monofilament; 12. Second trapezoidal hollow monofilament; 13. First reinforced steel core; 14. Second reinforced steel core; 15. Light unit;

[0041] 2. Fireproof layer; 21. Bump; 22. Silicone grease layer;

[0042] 3. Thermal conductive layer;

[0043] 4. Wear-resistant and corrosion-resistant insulating layer; 41. First insulating layer; 42. Second insulating layer; 43. Second carbon fiber layer; 44. Metal inorganic coating. DETAILED DESCRIPTION

[0044] See also Figure 1-4 The present invention provides a technical solution: a hollow expanded diameter conductor, comprising a polyurethane material layer 1, the outer wall of the polyurethane material layer 1 is wrapped with a plurality of uniformly distributed first trapezoidal hollow monofilaments 11, the plurality of first trapezoidal hollow monofilaments 11 are arranged in a close relationship, the outer wall of the first trapezoidal hollow monofilament 11 is adhered with a plurality of uniformly distributed second trapezoidal hollow monofilaments 12, the plurality of second trapezoidal hollow monofilaments 12 are arranged in a close relationship;

[0045] The outer wall of the second trapezoidal hollow monofilament 12 is sheathed with a fireproof layer 2 , the outer wall of the fireproof layer 2 is sheathed with a heat-conducting layer 3 , and the outer wall of the heat-conducting layer 3 is sheathed with a wear-resistant and corrosion-resistant insulating layer 4 .

[0046] In actual use, a plurality of first trapezoidal hollow monofilaments 11 are included in the outer wall of the polyurethane material layer 1 to form a first layer of diameter expansion, and a plurality of second trapezoidal hollow monofilaments 12 are included in the outer wall of the first trapezoidal hollow monofilament 11 to form a second layer of diameter expansion. The first trapezoidal hollow monofilament 11 and the second trapezoidal hollow monofilament 12 are staggered, and the first trapezoidal hollow monofilament 11 and the second trapezoidal hollow monofilament 12 are used to expand the diameter, which is beneficial to improve the fit, and thus to improve the stability of the structure.

[0047] And by adding a fireproof layer 2, the use of the fireproof layer 2 can significantly reduce the probability of fire and the damage caused by the fire. When a fire occurs, the fireproof layer 2 can reduce the damage to the surrounding environment and equipment, and protect the safety of personnel and equipment. The thermal conductive layer 3 can reduce the temperature inside the cable, thereby protecting the various structural layers of the cable and extending the service life of the cable. The wear-resistant and corrosion-resistant insulating layer 4 can enhance the durability of the cable, so that it can still maintain good performance in various harsh environments, and has good chemical corrosion resistance, water resistance and weather resistance.

[0048] Furthermore, a first reinforcing steel core 13 is installed between two adjacent first trapezoidal hollow monofilaments 11 . The provision of the first reinforcing steel core 13 can improve the connection strength between the first trapezoidal hollow monofilaments 11 .

[0049] Furthermore, a second reinforcing steel core 14 is installed between two adjacent second trapezoidal hollow monofilaments 12 . The provision of the second reinforcing steel core 14 can improve the connection strength between the second trapezoidal hollow monofilaments 12 .

[0050] It is worth mentioning that an optical unit 15 is installed in the polyurethane material layer 1. The optical unit 15 is an optical fiber, so that the communication function can be added.

[0051] like Figure 1 and 2 As shown, the fireproof layer 2 is a magnesium oxide fireproof layer, and a plurality of evenly distributed integrally formed protrusions 21 are fixed to the outer wall of the fireproof layer 2, and the protrusions 21 penetrate the heat-conducting layer 3;

[0052] The magnesium oxide fireproof layer has a high melting point, can maintain a long working state at high temperature, and has good fireproof performance. The heat generated inside the wire can be transferred to the fireproof layer 2, and multiple protrusions 21 are used to contact the thermal conductive layer 3, which is beneficial to improve the heat transfer effect, and then help improve the thermal conductivity effect.

[0053] Furthermore, a silicone grease layer 22 is fixed to the inner wall of the fireproof layer 2. The silicone grease layer 22 has good thermal conductivity, which is beneficial to improving the efficiency of heat transfer inside the wire, and further helps to improve the heat dissipation performance. At the same time, silicone grease has good insulation properties, which can improve the insulation strength of the cable and reduce the possibility of electrical failure.

[0054] like Figure 1 and 4 The heat-conducting layer 3 is a heat-conducting silicone layer. The heat-conducting silicone is a high-performance heat-conducting material with good insulation and temperature resistance. It can improve the heat dissipation efficiency of the cable while ensuring insulation.

[0055] like Figure 1 and 3 As shown, the wear-resistant and corrosion-resistant insulating layer 4 comprises:

[0056] The first insulating layer 41 and the second insulating layer 42, the first insulating layer 41 is a first carbon fiber layer, and the second insulating layer 42 is a polyvinyl chloride layer. The first carbon fiber layer can form a tighter wrapping for the material within the second insulating layer 42, so that the compactness is high, and at the same time the mechanical strength and wear resistance of the wire can be improved. Then, the polyvinyl chloride layer can improve the insulation, corrosion resistance and mechanical strength, and has strong plasticity.

[0057] Furthermore, the inner cavity of the second insulating layer 42 is provided with a second carbon fiber layer 43 , which is woven in a grid pattern, thereby further improving the mechanical strength, and improving the mechanical strength in the entire range of the horizontal and vertical directions of the conductor.

[0058] Furthermore, the outer wall of the second insulating layer 42 is coated with a metal inorganic coating 44, which has a high-efficiency and long-lasting protective effect, is resistant to ultraviolet aging, and is suitable for indoor and outdoor environments resistant to chemical gas corrosion such as moisture and salt spray.

[0059] The implementation principle of a hollow expanded diameter conductor of the present application is as follows: in actual use, a plurality of first trapezoidal hollow monofilaments 11 are included in the outer wall of a polyurethane material layer 1 to form a first layer of expansion, a plurality of second trapezoidal hollow monofilaments 12 are included in the outer wall of the first trapezoidal hollow monofilament 11 to form a second layer of expansion, the first trapezoidal hollow monofilament 11 and the second trapezoidal hollow monofilament 12 are staggered, and the first trapezoidal hollow monofilament 11 and the second trapezoidal hollow monofilament 12 are used to expand the diameter, which is beneficial to improve the fit, and thus to improve the stability of the structure, and a first reinforced steel core 13 and a second reinforced steel core 14 are provided between adjacent first trapezoidal hollow monofilaments 11 and adjacent second trapezoidal hollow monofilaments 12, which is beneficial to improve the overall structural strength, and adding optical fibers in the polyurethane material layer 1 can realize the addition of communication functions;

[0060] And by adding a fireproof layer 2, the use of the fireproof layer 2 can significantly reduce the probability of fire and the damage caused by the fire. When a fire occurs, the fireproof layer 2 can reduce the damage to the surrounding environment and equipment, and protect the safety of personnel and equipment. The thermal conductive layer 3 can reduce the temperature inside the cable, thereby protecting the various structural layers of the cable and extending the service life of the cable. The wear-resistant and corrosion-resistant insulating layer 4 can enhance the durability of the cable, so that it can still maintain good performance in various harsh environments, and has good chemical corrosion resistance, water resistance and weather resistance.

[0061] In addition, in this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the specific embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow expanded-diameter conductor, comprising a polyurethane material layer (1), characterized in that: The outer wall of the polyurethane material layer (1) is wrapped with a plurality of evenly distributed first trapezoidal hollow monofilaments (11), and the plurality of the first trapezoidal hollow monofilaments (11) are arranged in a close relationship; the outer wall of the first trapezoidal hollow monofilament (11) is adhered with a plurality of evenly distributed second trapezoidal hollow monofilaments (12), and the plurality of the second trapezoidal hollow monofilaments (12) are arranged in a close relationship; The outer wall of the second trapezoidal hollow monofilament (12) is sheathed with a fireproof layer (2), the outer wall of the fireproof layer (2) is sheathed with a heat-conducting layer (3), and the outer wall of the heat-conducting layer (3) is sheathed with a wear-resistant and corrosion-resistant insulating layer (4).

2. A hollow expanded diameter conductor according to claim 1, characterized in that: The fireproof layer (2) is a magnesium oxide fireproof layer, and a plurality of evenly distributed integrally formed protrusions (21) are fixed to the outer wall of the fireproof layer (2), and the protrusions (21) penetrate the heat-conducting layer (3).

3. A hollow expanded diameter conductor according to claim 2, characterized in that: A silicone grease layer (22) is fixed to the inner wall of the fireproof layer (2).

4. The hollow expanded-diameter conductor according to claim 1, characterized in that: The heat-conducting layer (3) is a heat-conducting silica gel layer.

5. The hollow expanded-diameter conductor according to claim 1, characterized in that: The wear-resistant and corrosion-resistant insulating layer (4) comprises: A first insulating layer (41) and a second insulating layer (42), wherein the first insulating layer (41) is a first carbon fiber layer, and the second insulating layer (42) is a polyvinyl chloride layer.

6. The hollow expanded-diameter conductor according to claim 5, characterized in that: A second carbon fiber layer (43) is provided in the inner cavity of the second insulating layer (42).

7. The hollow expanded-diameter conductor according to claim 5, characterized in that: The outer wall of the second insulating layer (42) is coated with a metallic inorganic coating (44).

8. The hollow expanded-diameter conductor according to claim 1, characterized in that: A first reinforcing steel core (13) is installed between two adjacent first trapezoidal hollow monofilaments (11).

9. The hollow expanded-diameter conductor according to claim 1, characterized in that: A second reinforcing steel core (14) is installed between two adjacent second trapezoidal hollow monofilaments (12).

10. The hollow expanded-diameter conductor according to claim 1, characterized in that: A light unit (15) is installed in the polyurethane material layer (1).

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