High-tensile heat-resistant aluminum alloy conductor for cable

Abstract

The utility model discloses a heat-resistant aluminum alloy conductor for a high-tensile cable, which comprises an aluminum alloy wire core conductor and an insulating layer, the insulating layer is arranged on the outer side of the aluminum alloy wire core conductor, and a shielding layer is welded on the outer side of the insulating layer. According to the utility model, the insulating layer and the shielding layer are arranged on the outer side of the aluminum alloy wire core conductor, the aluminum alloy wire core conductor can have better electrical insulation performance by using the insulating layer, and signal transmission in the cable can be effectively prevented from electromagnetic interference by matching with the shielding layer; the inner protective layer is made of polyvinyl chloride, is good in weather resistance and has high mechanical strength, so that the inner protective layer is not prone to deformation or breakage when pulled by external force, the protective net made of a carbon fiber net is further arranged on the outer side of the inner protective layer in a matched mode, the anti-pulling effect is good, and the anti-pulling performance of the aluminum alloy wire core conductor can be further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy conductors, in particular to a heat-resistant aluminum alloy conductor for cables with high tensile strength. Background Art

[0002] Aluminum alloy conductor is a kind of electrical conductor material mixed with aluminum and other alloy elements. In the field of power transmission, with the increasing demand for energy and the continuous expansion of the scale of power grid, the performance requirements for cables are also increasing. Especially in the high temperature and high current transmission environment, the heat resistance and tensile strength of cables have become key technical indicators. In this context, heat-resistant aluminum alloy conductors with high tensile strength for cables have emerged.

[0003] A heat-resistant aluminum alloy conductor for cables with announcement number CN218159647U specifically relates to the technical field of aluminum alloy conductors, including a copper-clad aluminum alloy wire core, wherein the number of the copper-clad aluminum alloy wire cores is set to seven, and the six outer copper-clad aluminum alloy wire cores are distributed in a circular array with the center of the central copper-clad aluminum alloy wire core. The utility model sleeves a fluoroplastic sleeve on the outer wall of the copper-clad aluminum alloy wire core. The fluoroplastic has excellent electrical insulation, heat resistance, wear resistance and low temperature resistance, thereby improving the insulation and safety of the copper-clad aluminum alloy wire core. The copper-clad aluminum alloy wire core and the heat-resistant aluminum alloy layer have good high temperature resistance, strong tensile strength and large transmission current carrying capacity, thereby improving the heat resistance and tensile resistance of the copper-clad aluminum alloy wire core. A polyimide film is used as the high temperature resistant layer. The polyimide film has the characteristics of high temperature resistance, low temperature resistance and high insulation, thereby further improving the high temperature resistance and insulation of the copper-clad aluminum alloy wire core.

[0004] The above-mentioned existing aluminum alloy conductors have a single function and poor tensile strength when in use. Under the influence of external forces, the aluminum alloy conductors may break, increasing the risk of electrical accidents, thereby affecting the safety of the use of aluminum alloy conductors and cables, and correspondingly shortening the service life of the aluminum alloy conductors. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a heat-resistant aluminum alloy conductor for cables with high tensile strength, so as to solve the problem that the existing aluminum alloy conductors proposed in the above background technology have poor tensile strength when in use, resulting in the aluminum alloy conductors being easily deformed under the influence of external forces, thus affecting the safe use of the cables.

[0006] To achieve the above object, the utility model provides the following technical solution: a heat-resistant aluminum alloy conductor for a high-tensile cable, comprising an aluminum alloy core conductor and an insulating layer, wherein the outer side of the aluminum alloy core conductor is provided with an insulating layer, and the outer side of the insulating layer is welded with a shielding layer;

[0007] It is characterized by further comprising:

[0008] An insulating sleeve is adhesively bonded to the outer side of the shielding layer, and a heat-insulating film is coated on the outer side of the insulating sleeve. An inner protective layer is arranged on the outer side of the heat-insulating film, and a protective net is arranged on the outer side of the inner protective layer. A tensile strength layer is adhesively bonded to the outer side of the protective net, and an outer sheath is bonded to the outer side of the tensile strength layer. The outer sheath includes a strengthening cavity, and a first tensile strength strip and a second tensile strength strip are uniformly connected inside the strengthening cavity. Multiple groups of the first tensile strength strips and the second tensile strength strips are uniformly arranged inside the strengthening cavity.

[0009] Preferably, the outer sheath is made of silicone rubber, and both the first tensile strength strip and the second tensile strength strip are made of aluminum alloy wires.

[0010] Preferably, the first tensile strength strip and the second tensile strength strip are distributed in upper and lower layers inside the strengthening cavity, and the first tensile strength strip and the second tensile strength strip form a net structure.

[0011] Preferably, the inside of the insulating sleeve is hollow, and partition strips are uniformly connected inside the insulating sleeve, and heat-insulating rock wool is filled inside each partition strip.

[0012] Preferably, a plurality of the partition strips are arranged inside the insulating sleeve, and the plurality of partition strips are annularly distributed in the insulating sleeve.

[0013] Preferably, the insulating sleeve is made of polyurethane foam, and the heat-insulating film is made of polyester film.

[0014] Preferably, the inner protective layer is made of polyvinyl chloride, and the protective net is made of carbon fiber net.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The heat-resistant aluminum alloy conductor for high-tensile cables not only has good tensile strength and is not easily deformed, but also has good heat resistance, so as to improve the safety of the use of the aluminum alloy conductor;

[0016] An insulating layer and a shielding layer are arranged on the outer side of the aluminum alloy wire core conductor. The insulating layer can endow the aluminum alloy wire core conductor with good electrical insulation performance, and the shielding layer can effectively prevent electromagnetic interference to the signal transmission inside the cable. An inner protective layer is adhesively bonded to the periphery of the heat-insulating film by an adhesive. The inner protective layer is made of polyvinyl chloride, which has good weather resistance and high mechanical strength. Therefore, it is not easily deformed or broken when being pulled by an external force. Further, in cooperation with the protective net made of carbon fiber net on the outer side of the inner protective layer, the tensile strength effect is good, and the tensile strength performance of the aluminum alloy wire core conductor can be further enhanced;

[0017] By using the cooperation of the tensile layer and the outer sheath on the outermost layer of the aluminum alloy wire core conductor, the tensile property of the aluminum alloy wire core conductor can be further enhanced. The outer sheath is made of silicone rubber, which has excellent heat resistance and cold resistance, maintains stable performance within a wide temperature range, has good absorption capacity and wear resistance, provides external protection for the aluminum alloy wire core conductor, and makes the aluminum alloy wire core conductor not easily deformed under the influence of external forces.

[0018] By using multiple groups of first tensile strips and second tensile strips in the outer sheath to cooperate with each other to form a network structure, the strength of the outer sheath can be further enhanced, and the anti-deformation performance of the outer sheath can be enhanced.

[0019] By bonding a heat insulation sleeve around the shielding layer, the internal area of the heat insulation sleeve is separated by multiple partition strips, and heat insulation rock wool is filled in the separated areas. The heat insulation rock wool has a low thermal conductivity coefficient, can effectively prevent the transfer of heat, and can effectively prevent the aluminum alloy wire core conductor from being eroded and damaged by the external environment, so as to strengthen the protection of the aluminum alloy wire core conductor, improve the safety of the aluminum alloy wire core conductor in use. Further, a heat insulation film is coated on the outer side of the heat insulation sleeve, and the heat insulation film made of polyester film further plays an efficient heat insulation effect, improving the safety of the aluminum alloy wire core conductor in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the front view structural schematic diagram of the present invention;

[0022] Figure 2 It is the three-dimensional sectional structural schematic diagram of the protective net of the present invention;

[0023] Figure 3 It is the three-dimensional sectional structural schematic diagram of the outer sheath of the present invention;

[0024] Figure 4 It is the partial sectional structural schematic diagram of the heat insulation sleeve of the present invention.

[0025] The reference numerals in the drawings are explained as follows: 1. Aluminum alloy wire core conductor; 2. Insulating layer; 3. Shielding layer; 4. Heat insulation sleeve; 401. Partition strip; 402. Heat insulation rock wool; 5. Heat insulation film; 6. Inner protective layer; 601. Protective net; 7. Tensile layer; 8. Outer sheath; 801. Reinforcement cavity; 802. First tensile strip; 803. Second tensile strip. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:

[0028] Embodiment 1

[0029] To solve the problem that the existing aluminum alloy conductor has poor heat resistance and affects the use safety, the following technical solutions are hereby disclosed. Specifically, please refer to Figure 1 , Figure 4 , a heat-resistant aluminum alloy conductor for high-tensile cables, comprising an aluminum alloy wire core conductor 1 and an insulating layer 2. The insulating layer 2 is arranged on the outer side of the aluminum alloy wire core conductor 1, and a shielding layer 3 is welded on the outer side of the insulating layer 2. It further includes: a heat insulation sleeve 4 is adhesively bonded to the outer side of the shielding layer 3, and a heat insulation film 5 is coated on the outer side of the heat insulation sleeve 4. The interior of the heat insulation sleeve 4 is hollow, and partition strips 401 are evenly connected inside the heat insulation sleeve 4, and heat insulation rock wool 402 is filled inside each of the partition strips 401. A plurality of partition strips 401 are arranged inside the heat insulation sleeve 4, and the plurality of partition strips 401 are annularly distributed in the heat insulation sleeve 4. The material of the heat insulation sleeve 4 is polyurethane foam, and the material of the heat insulation film 5 is polyester film;

[0030] When this embodiment is in use, the insulating layer 2 and the shielding layer 3 are arranged on the outer side of the aluminum alloy wire core conductor 1. The insulating layer 2 enables the aluminum alloy wire core conductor 1 to have good electrical insulation performance, and in cooperation with the shielding layer 3, it can effectively prevent electromagnetic interference with the signal transmission inside the cable. By adhesively bonding a heat insulation sleeve 4 on the periphery of the shielding layer 3, the internal area of the heat insulation sleeve 4 is separated by multiple partition strips 401, and heat insulation rock wool 402 is filled in the separated areas. The heat insulation rock wool 402 has a low thermal conductivity, can effectively prevent heat transfer, and can effectively prevent the aluminum alloy wire core conductor 1 from being eroded and damaged by the external environment, so as to strengthen the protection of the aluminum alloy wire core conductor 1 and improve the safety of the aluminum alloy wire core conductor 1 during use. Further, a heat insulation film 5 is coated on the outer side of the heat insulation sleeve 4, and the polyester film of the heat insulation film 5 further plays an efficient heat insulation effect and improves the safety of the aluminum alloy wire core conductor 1 during use.

[0031] Embodiment 2

[0032] This embodiment is different from Embodiment 1. By setting the inner protective layer 6 and the outer sheath 8, the aluminum alloy wire core conductor 1 can be effectively protected, and the tensile property of the aluminum alloy wire core conductor 1 can be enhanced. Therefore, the following technical solutions are disclosed. For details, please refer to Figure 1 , Figure 2 , Figure 3 , an inner protective layer 6 is arranged on the outer side of the heat insulation film 5, and a protective net 601 is arranged on the outer side of the inner protective layer 6. The inner protective layer 6 is made of polyvinyl chloride, and the protective net 601 is made of carbon fiber net. The outer side of the protective net 601 is adhesively bonded with a tensile layer 7 through an adhesive, and the outer side of the tensile layer 7 is adhesively bonded with an outer sheath 8. The outer sheath 8 includes a strengthening cavity 801, and a first tensile strip 802 and a second tensile strip 803 are uniformly connected inside the strengthening cavity 801. Multiple groups of the first tensile strip 802 and the second tensile strip 803 are uniformly arranged inside the strengthening cavity 801. The outer sheath 8 is made of silicone rubber, the first tensile strip 802 and the second tensile strip 803 are both made of aluminum alloy wires, the first tensile strip 802 and the second tensile strip 803 are distributed in upper and lower layers inside the strengthening cavity 801, and the first tensile strip 802 and the second tensile strip 803 form a mesh structure;

[0033] When this embodiment is in use, the inner protective layer 6 is adhesively bonded around the heat insulation film 5 by an adhesive. The inner protective layer 6 is made of polyvinyl chloride, which has good weather resistance and high mechanical strength. Therefore, it is not easy to deform or break under external pulling. Further, cooperating with the protective net 601 made of carbon fiber net on the outer side of the inner protective layer 6, the tensile effect is good, and the tensile property of the aluminum alloy wire core conductor 1 can be further enhanced. By cooperating the tensile layer 7 and the outer sheath 8 on the outermost layer of the aluminum alloy wire core conductor 1, the tensile property of the aluminum alloy wire core conductor 1 can be further enhanced. Among them, the outer sheath 8 is made of silicone rubber material, which has excellent heat resistance and cold resistance, maintains stable performance in a wide temperature range, has good absorption capacity and wear resistance, provides external protection for the aluminum alloy wire core conductor 1, and makes the aluminum alloy wire core conductor 1 not easy to deform under the influence of external force. And in the outer sheath 8, multiple groups of the first tensile strip 802 and the second tensile strip 803 cooperate to form a state structure. Among them, the first tensile strip 802 and the second tensile strip 803 are both made of aluminum alloy wires, which have good toughness and strength, can enhance the strength and toughness of the outer sheath 8, and can enhance the tensile effect on the aluminum alloy wire core conductor 1.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A heat-resistant aluminum alloy conductor for a high-tensile cable, comprising an aluminum alloy core conductor (1) and an insulating layer (2), wherein the insulating layer (2) is arranged on the outside of the aluminum alloy core conductor (1), and a shielding layer (3) is welded on the outside of the insulating layer (2); It is characterized in that Also includes: The outer side of the shielding layer (3) is bonded with a heat insulating sleeve (4) by means of an adhesive, and the outer side of the heat insulating sleeve (4) is coated with a heat insulating film (5), the outer side of the heat insulating film (5) is provided with an inner protective layer (6), and the outer side of the inner protective layer (6) is provided with a protective net (601), the outer side of the protective net (601) is bonded with an anti-tear layer (7) by means of an adhesive, and the outer side of the anti-tear layer (7) is bonded with an outer sheath (8), the outer sheath (8) comprises a reinforcement cavity (801), and the interior of the reinforcement cavity (801) is uniformly connected with a first anti-tear strip (802) and a second anti-tear strip (803), and a plurality of groups of the first anti-tear strip (802) and the second anti-tear strip (803) are uniformly provided inside the reinforcement cavity (801).

2. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 1, characterized in that: The outer sheath (8) is made of silicone rubber, and the first anti-tear strip (802) and the second anti-tear strip (803) are both made of aluminum alloy wire.

3. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 1, characterized in that: The first anti-tear strip (802) and the second anti-tear strip (803) are distributed in upper and lower layers inside the reinforcement cavity (801), and the first anti-tear strip (802) and the second anti-tear strip (803) form a mesh structure.

4. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 1, characterized in that: The interior of the heat insulation sleeve (4) is hollow, the interior of the heat insulation sleeve (4) is evenly connected with separation strips (401), and the interior of the separation strips (401) is filled with heat insulation rock wool (402).

5. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 4, characterized in that: A plurality of the partition bars (401) are arranged inside the heat insulation sleeve (4), and the plurality of the partition bars (401) are distributed in a ring shape in the heat insulation sleeve (4).

6. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 1, characterized in that: The material of the heat insulation sleeve (4) is polyurethane foam, and the material of the heat insulation film (5) is polyester film.

7. The heat-resistant aluminum alloy conductor for cables with high tensile strength according to claim 1, characterized in that: The inner protective layer (6) is made of polyvinyl chloride, and the protective net (601) is made of a carbon fiber net.

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