Multi-core cable with special-shaped filling ropes

Abstract

The utility model discloses a multi-core cable with a special-shaped filling rope, which comprises a cable jacket layer and a cable core, a rope body is arranged inside the cable jacket layer, a core groove is arranged on the outer surface of the rope body, the cable core is arranged in the core groove, and the rope body is made of a heat-conducting insulating elastic rubber material. The beneficial effects are that the cable adopts the rope body, the outer side surface of the rope body is provided with the core groove which is used for fixing and limiting the cable core and separating the cable core, the cable core is prevented from being mutually extruded and damaged, the protection effect on the cable core is improved, the outer side surface of the rope body abuts against the cable jacket layer, and the rope body is made of a heat-conducting insulating elastic rubber material, so that the cable core is prevented from being damaged. The heat conduction efficiency is high, heat generated by the cable core is transmitted to the rope body, the rope body is transmitted to the cable jacket layer through contact, heat conduction and heat dissipation are completed, the problem of center heat accumulation is avoided, the heat dissipation efficiency is improved, meanwhile, the rope body is high in insulativity, the problem that a traditional heat conduction structure is prone to electric conduction is solved, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a multi-core cable with special-shaped filling ropes. Background Art

[0002] Compared with single-core cables, multi-core cables can better meet the use requirements when the occupied space and laying conditions are limited. However, when multi-core cables are twisted, if no filling rope is used, gaps are likely to appear in the center of the cable. These gaps will bring in air, and when the sheath is squeezed out, it is easy to cause defects such as bubbling points in the sheath, thereby affecting the cable's yield and continuous length, and accelerating the oxidation of the cable shield. At the same time, when cables with structures other than 7, 19, 37 cores are cabled, the cable roundness is poor and the gaps between the cores are larger. For multi-core cables with 7, 19, and 37 cores, when the cable is bent, the center core is affected by stress more than the outer cores, making the center core more susceptible to stretching and breaking.

[0003] After searching, it was found that the announcement number is CN210777952U, and the name is a multi-core cable with special-shaped filling rope. The application proposes that when using filling rope, the current cable filling ropes are mostly made of cotton yarn, rubber, plastic and other materials. The thermal conductivity of the above materials is poor, and the heat generated during the operation of the cable is not easy to dissipate. Cotton yarn and other materials are also easy to absorb moisture, thereby accelerating the oxidation of the cable shielding layer. By using high-strength fiber as the central fiber of the filling rope, the tensile strength of the cable filling rope is enhanced, thereby improving the overall tensile strength of the cable; the coating layer of the filling rope adopts a special-shaped low-density polytetrafluoroethylene. Due to the low-density polytetrafluoroethylene coating layer has low density, is relatively soft, and is easy to deform under force, when the cable is subjected to external pressure, it can absorb a certain amount of pressure, thereby reducing the influence of pressure on the cable insulation core, and the coating layer is a special-shaped structure, and the internal air of the cable The air content inside the cable is reduced, the void ratio is small, and the defect phenomenon such as bubble point during the extrusion of the sheath is improved, and the yield and continuous length are improved; a graphene coating is added outside the sheath as a thermal conductive coating layer, and the graphene coating covers the sheath 100%, which increases the longitudinal thermal conductivity of the sheath, which is beneficial to dissipate the heat generated when the cable is used and the heat infiltrated by the external environment to both ends of the cable, thereby improving the performance of the cable. However, the filling rope in this application is located on the inner side of the core, and the high temperature generated by the core cannot be transmitted to the outer structure of the cable through the filling rope, which will cause a large amount of heat to accumulate inside and on the surface of the filling rope and cannot be dissipated. In the entire cable, the problem of excessively high center temperature is reflected, and the heat dissipation efficiency is low. At the same time, the graphene coating has excellent conductivity, which affects the insulation between the cores, is not safe and reliable, and can be further improved.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a multi-core cable with special-shaped filling ropes, which has the advantages of high thermal conductivity and greater safety and reliability, thereby solving the problems in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above advantages of high heat conduction efficiency, greater safety and reliability, the specific technical solutions adopted by the utility model are as follows:

[0009] A multi-core cable with a special-shaped filling rope comprises a cable jacket layer and a cable core, a rope body is arranged inside the cable jacket layer, and a core groove is opened on the outer surface of the rope body, the cable core is located in the core groove, the rope body is made of heat-conducting and insulating elastic rubber material, and the outer surface of the rope body abuts against the inner wall of the cable jacket layer, a middle hole is opened inside the rope body, and an inner groove is opened on the surface of the middle hole, and a reinforcing core is embedded in the inner groove, the reinforcing core is made of glass fiber rope, and the length of the reinforcing core is the same as the length of the middle hole, a plurality of inner grooves are arranged at equal angles, and the length of the inner groove is the same as the length of the middle hole, the length of the middle hole is the same as the length of the rope body, and the length of the rope body is the same as the length of the cable core, the size of the core groove is opened according to the size of the cable core, and the number of core grooves matches the number of cable cores, and the rope body, cable jacket layer and middle hole are coaxially arranged.

[0010] (III) Beneficial effects

[0011] Compared with the prior art, the utility model provides a multi-core cable with special-shaped filling ropes, which has the following beneficial effects:

[0012] (1) The utility model adopts a rope body, and a core groove is provided on the outer surface of the rope body for fixing and limiting the cable core, and at the same time plays the role of separating the cable cores to avoid the cable cores from being squeezed and damaged by each other, thereby improving the protection of the cable cores. At the same time, the outer surface of the rope body is in contact with the cable jacket layer. The rope body is made of heat-conducting insulating elastic rubber material with high thermal conductivity efficiency. The heat generated by the cable core is transferred to the rope body, and the rope body is transferred to the cable jacket layer through contact, thereby completing the heat conduction and heat dissipation, avoiding the problem of central heat accumulation, and improving the heat dissipation efficiency. At the same time, the rope body has high insulation, avoiding the problem of easy conductivity of traditional heat-conducting structures, and improving the safety of use.

[0013] (2) The utility model adopts a central hole, which is coaxially arranged with the rope body, thereby reducing the overall weight and facilitating the installation and use of multi-core cables. At the same time, the central hole provides additional deformation space, which prevents the cable jacket from deforming when the cable core expands or contracts due to heat, thereby improving the overall stability. At the same time, a reinforcing core is embedded in the inner wall of the central hole, and the reinforcing core adopts glass fiber rope, which improves the overall tensile strength of the rope body and further improves the stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the installation of a multi-core cable with a special-shaped filling rope proposed by the utility model;

[0016] Figure 2 It is a cross-sectional view of the rope body proposed by the utility model;

[0017] Figure 3 It is a structural schematic diagram of the rope body proposed by the utility model.

[0018] In the figure:

[0019] 1. Cable outer jacket; 2. Cable core; 3. Rope body; 4. Core groove; 5. Middle hole; 6. Inner groove; 7. Reinforced core. DETAILED DESCRIPTION

[0020] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] According to an embodiment of the utility model, a multi-core cable with special-shaped filling ropes is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, according to an embodiment of the utility model, a multi-core cable with a special-shaped filling rope comprises a cable jacket layer 1 and a cable core 2. The cable jacket layer 1 is a common structure in the art, and is shown in detail in the figure. A rope body 3 is arranged inside the cable jacket layer 1, and a core groove 4 is opened on the outer surface of the rope body 3. The cable core 2 is located in the core groove 4, and the outer wall of the cable core 2 is tightly pressed against the inner surface of the core groove 4. The rope body 3 is made of heat-conducting and insulating elastic rubber material, and the outer surface of the rope body 3 is pressed against the inner wall of the cable jacket layer 1. A middle hole 5 is opened inside the rope body 3, and the middle hole 5 is located at On the inner side of the core groove 4, an inner groove 6 is provided on the surface of the middle hole 5, and a reinforcing wire core 7 is embedded in the inner groove 6. The core groove 4 is provided on the outer surface of the rope body 3 to fix and limit the cable core 2, and at the same time, it plays a role in separating the cable core 2 to prevent the cable core 2 from being squeezed and damaged by each other, thereby improving the protection of the cable core 2. At the same time, the outer surface of the rope body 3 is in contact with the cable jacket layer 1. The rope body 3 is made of heat-conducting and insulating elastic rubber material with high heat conduction efficiency. The heat generated by the cable core 2 is transferred to the rope body 3, and the rope body 3 is transferred to the cable jacket layer through contact. 1. The heat conduction and heat dissipation are completed, the problem of central heat accumulation is avoided, and the heat dissipation efficiency is improved. At the same time, the rope body 3 has high insulation, which avoids the problem of easy conductivity of the traditional heat-conducting structure and improves the safety of use. The reinforced core 7 adopts glass fiber rope, and the length of the reinforced core 7 is the same as the length of the middle hole 5. Among them, the rope body 3, the cable jacket layer 1 and the middle hole 5 are coaxially arranged, and the middle hole 5 reduces the overall weight, which is convenient for the installation and use of multi-core cables. At the same time, the middle hole 5 provides additional deformation space, and the cable jacket layer 1 is deformed when the cable core 2 expands and contracts, thereby improving the overall stability. At the same time, the inner wall of the middle hole 5 is embedded with the reinforced core 7, which improves the overall tensile strength of the rope body 3 and further improves the stability of use. There are multiple inner grooves 6 arranged at equal angles, and the length of the inner groove 6 is the same as the length of the middle hole 5. Among them, the length of the middle hole 5 is the same as the length of the rope body 3, and the length of the rope body 3 is the same as the length of the cable core 2, thereby improving the integrity. The size of the core groove 4 is opened according to the size of the cable core 2, and the number of the core grooves 4 matches the number of the cable core 2, thereby improving the installation stability and fit.

[0023] Working principle:

[0024] The outer surface of the rope body 3 is provided with a core groove 4, which is used to fix and limit the cable core 2, and at the same time plays the role of separating the cable core 2, so as to avoid the cable core 2 from being squeezed and damaged by each other, thereby improving the protection of the cable core 2. At the same time, the outer surface of the rope body 3 is in contact with the cable jacket layer 1. The rope body 3 is made of heat-conducting and insulating elastic rubber material with high heat conduction efficiency. The heat generated by the cable core 2 is transferred to the rope body 3, and the rope body 3 is transferred to the cable jacket layer 1 through contact, thereby completing heat conduction and heat dissipation, avoiding the problem of central heat accumulation, and improving the heat dissipation efficiency. At the same time, the rope body 3 has high insulation, avoiding the problem of easy conductivity of traditional heat-conducting structures, and improving the safety of use. At the same time, the middle hole 5 is coaxially arranged with the rope body 3 to reduce the overall weight and facilitate the installation and use of multi-core cables. At the same time, the middle hole 5 provides additional deformation space, and when the cable core 2 expands and contracts, the cable jacket layer 1 is prevented from being deformed by deformation, thereby improving the overall stability. At the same time, the inner wall of the middle hole 5 is embedded with a reinforcing core 7, and the reinforcing core 7 adopts a glass fiber rope, which improves the overall tensile strength of the rope body 3 and further improves the stability of use.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-core cable with a special-shaped filling rope, characterized in that: The cable comprises a cable jacket (1) and a cable core (2), wherein a cable body (3) is arranged inside the cable jacket (1), and a core groove (4) is provided on the outer surface of the cable body (3), and the cable core (2) is located in the core groove (4), and the cable body (3) is made of a heat-conducting insulating elastic rubber material, and the outer surface of the cable body (3) is in contact with the inner wall of the cable jacket (1), and a middle hole (5) is provided inside the cable body (3), and an inner groove (6) is provided on the surface of the middle hole (5), and a reinforcing wire core (7) is embedded in the inner groove (6), and the reinforcing wire core (7) is embedded in the inner groove (6), and the reinforcing wire core (7) is embedded in the inner groove (6). The wire core (7) is made of glass fiber rope, and the length of the reinforced wire core (7) is the same as the length of the middle hole (5). A plurality of inner grooves (6) are arranged at equal angles, and the length of the inner grooves (6) is the same as the length of the middle hole (5). The length of the middle hole (5) is the same as the length of the rope body (3), and the length of the rope body (3) is the same as the length of the cable core (2). The size of the core groove (4) is opened according to the size of the cable core (2), and the number of the core grooves (4) matches the number of the cable core (2). The rope body (3), the cable jacket layer (1) and the middle hole (5) are coaxially arranged.

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