Cable with high tensile strength

Abstract

The utility model relates to the field of coking production devices, and discloses a cable with strong tensile capacity, which comprises an outer sheath, three conductor bodies and a center frame, a steel tape armor is fixedly sleeved in the outer sheath, a first insulation shielding layer is fixedly sleeved in the steel tape armor, and an inner sheath is fixedly sleeved in the first insulation shielding layer; the outer surface of the conductor body is fixedly sleeved with a conductor shielding layer, and the outer surface of the conductor shielding layer is fixedly sleeved with a second insulation shielding layer. According to the utility model, the firmness between the conductors and the center frame is increased through a threaded connection mode, the tensile force is effectively shared, the tensile capacity of the cable is obviously improved, the stability of the cable is enhanced through the use of the center frame, the mechanical strength of the cable in a complex environment is ensured, and the design not only has excellent electrical performance, but also has excellent performance. The mechanical performance of the cable reaches a new level, the cable is suitable for various complex and changeable environments, and the problem that a traditional cable is insufficient in tensile capacity is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a cable with high tensile strength. Background Technology

[0002] A cable is an assembly of conductors used to transmit electrical energy, signals, or data. It typically consists of multiple conductors wrapped in insulating material and may be further covered by protective layers, shielding layers, or armor layers. Cables are designed to transmit electrical energy or signals safely and efficiently under various environmental conditions, while providing necessary mechanical protection and electrical performance. Widely used in power systems, communication systems, control systems, and many other industrial and commercial sectors, cables are an indispensable infrastructure component of modern society.

[0003] Existing cable designs generally employ a layered structure, which does offer excellent performance in terms of electrical properties, insulation protection, and signal transmission stability. However, this multi-layered structure also makes the cable relatively weak in tensile strength. In practical applications, cables often need to traverse complex and changing environments, such as underground, bridges, and tunnels. These locations are not only confined by space but also involve significant bending and stretching. Due to the lack of sufficient mechanical support and tensile strength, traditional cables are easily subjected to external forces in these scenarios, leading to serious problems such as insulation damage and conductor breakage. More seriously, cable damage not only affects normal power supply and signal transmission but may also create safety hazards, causing significant inconvenience to people's production and daily lives. Therefore, those skilled in the art have developed a cable with high tensile strength to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cable with high tensile strength, which is more durable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable with high tensile strength, comprising an outer sheath, three conductor bodies, and a center frame, wherein a steel tape armor is fixedly fitted inside the outer sheath, a first insulating shielding layer is fixedly fitted inside the steel tape armor, and an inner sheath is fixedly fitted inside the first insulating shielding layer.

[0006] A conductor shielding layer is fixedly sleeved on the outer surface of the conductor body. A second insulating shielding layer is fixedly sleeved on the outer surface of the conductor shielding layer. A metal shielding layer is fixedly sleeved on the outer surface of the second insulating shielding layer. The outer surface of the metal shielding layer is provided with external threads. Three inner cavities are opened on the outer surface of the central frame. The interior of each of the three inner cavities is provided with internal threads.

[0007] Furthermore, the metal shielding layer is located in the inner cavity and is connected by internal and external threads.

[0008] Furthermore, both the metal shielding layer and the central frame are located inside the inner sheath, and the inner sheath is connected to the metal shielding layer and the central frame through a filling layer.

[0009] Furthermore, the outer sheath is made of polyvinyl chloride material, and the steel strip armor is made of galvanized steel strip material.

[0010] Furthermore, the first insulating shielding layer is made of cross-linked polyethylene material, and the inner sheath is made of thermoplastic elastomer.

[0011] Furthermore, the conductor shielding layer is made of a semiconductor polymer, and the second insulating shielding layer is made of cross-linked polyethylene material.

[0012] Furthermore, the metal shielding layer is made of copper strip material, and the central frame is made of high-strength plastic material.

[0013] Furthermore, the filler layer is made of foamed polyethylene material.

[0014] This utility model has the following beneficial effects:

[0015] This invention proposes a cable with high tensile strength. The cable's connection between the external thread of the metal shielding layer and the internal thread of the center frame cavity not only increases the strength of the connection between the conductor and the center frame but also effectively distributes the tensile force, significantly improving the cable's tensile strength. The steel tape armor, made of galvanized steel tape, enhances mechanical protection with extremely high tensile strength and corrosion resistance, effectively strengthening the cable's mechanical protection and tensile strength. Especially in complex environments, it effectively prevents damage to the cable due to external forces. The center frame, made of high-strength plastic material, supports the cable structure. Lightweight yet possessing sufficient strength, it effectively supports the cable structure, maintains its shape, and prevents internal conductor deformation due to bending and stretching. The conductor shielding layer and the metal shielding layer, made of semiconductor polymer and copper tape respectively, effectively smooth the electric field, reduce partial discharge, and improve the cable's electrical performance. Simultaneously, the metal shielding layer effectively shields against external electromagnetic interference, ensuring the stability and reliability of signal transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the axial section of the present invention;

[0017] Figure 2 This is a schematic diagram of the central frame and conductor body of this utility model from an axial perspective.

[0018] Figure 3 This is a schematic diagram of the central frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the conductor body of this utility model from an axial side.

[0020] Legend:

[0021] 1. Outer sheath; 2. Steel strip armor; 3. First insulating shielding layer; 4. Inner sheath; 5. Filler layer; 6. Center frame; 7. Metal shielding layer; 8. Second insulating shielding layer; 9. Conductor shielding layer; 10. Conductor body; 11. External thread; 12. Internal thread; 13. Inner cavity. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-4 An embodiment of this utility model is provided: a cable with strong tensile strength, including an outer sheath 1, three conductor bodies 10, and a center frame 6. The outer sheath 1 is fitted with a steel tape armor 2, the steel tape armor 2 is fitted with a first insulating shielding layer 3, and the first insulating shielding layer 3 is fitted with an inner sheath 4.

[0024] A conductor shielding layer 9 is fixedly sleeved on the outer surface of the conductor body 10. A second insulating shielding layer 8 is fixedly sleeved on the outer surface of the conductor shielding layer 9. A metal shielding layer 7 is fixedly sleeved on the outer surface of the second insulating shielding layer 8. An external thread 11 is provided on the outer surface of the metal shielding layer 7. Three inner cavities 13 are opened on the outer surface of the center frame 6. An internal thread 12 is provided inside each of the three inner cavities 13.

[0025] The metal shielding layer 7 is located within the inner cavity 13 and is threadedly connected via internal threads 12 and external threads 11. Both the metal shielding layer 7 and the center frame 6 are located inside the inner sheath 4, and the inner sheath 4 is connected to the metal shielding layer 7 and the center frame 6 via a filling layer 5. The outer sheath 1 is made of polyvinyl chloride (PVC), and the steel strip armor 2 is made of galvanized steel strip. The first insulating shielding layer 3 is made of cross-linked polyethylene (XLPE), and the inner sheath 4 is made of thermoplastic elastomer. The conductor shielding layer 9 is made of a semiconductor polymer, and the second insulating shielding layer 8 is made of XLPE. The metal shielding layer 7 is made of copper strip, and the center frame 6 is made of high-strength plastic. The filling layer 5 is made of foamed polyethylene.

[0026] Specifically, polyvinyl chloride (PVC) possesses excellent weather resistance, abrasion resistance, and mechanical strength, protecting the internal structure from environmental influences. Galvanized steel strip exhibits extremely high tensile strength and corrosion resistance, effectively enhancing the cable's mechanical protection and tensile strength. Cross-linked polyethylene (XLPE) offers superior insulation and heat resistance, effectively isolating conductors and preventing corona and arcing. Thermoplastic elastomers are soft and possess good abrasion and chemical resistance, making them suitable as the inner sheath material. Semiconductor materials effectively smooth the electric field, reduce partial discharge, and improve the cable's electrical performance. Similar to the outer primary insulation shielding layer, XLPE provides excellent insulation performance. Copper tape offers good conductivity and shielding effectiveness, effectively blocking external electromagnetic interference. High-strength plastics are lightweight yet possess sufficient strength to support the cable's structure and maintain its shape. Foamed polyethylene is lightweight and possesses a degree of elasticity, filling internal voids and enhancing the cable's mechanical and electrical properties.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable with high tensile strength, comprising an outer sheath (1), three conductor bodies (10), and a center frame (6), characterized in that: The outer sheath (1) is fitted with a steel belt armor (2) inside, the steel belt armor (2) is fitted with a first insulating shield layer (3) inside, and the first insulating shield layer (3) is fitted with an inner sheath (4) inside. The conductor body (10) is fixedly fitted with a conductor shielding layer (9) on its outer surface. The conductor shielding layer (9) is fixedly fitted with a second insulating shielding layer (8) on its outer surface. The second insulating shielding layer (8) is fixedly fitted with a metal shielding layer (7) on its outer surface. The metal shielding layer (7) is provided with an external thread (11) on its outer surface. The center frame (6) is provided with three inner cavities (13) on its outer surface. The three inner cavities (13) are all provided with internal threads (12).

2. The cable with high tensile strength according to claim 1, characterized in that: The metal shielding layer (7) is located in the inner cavity (13) and is threadedly connected by an internal thread (12) and an external thread (11).

3. The cable with high tensile strength according to claim 1, characterized in that: The metal shielding layer (7) and the central frame (6) are both located inside the inner sheath (4), and the inner sheath (4) is connected to the metal shielding layer (7) and the central frame (6) through a filling layer (5).

4. The cable with high tensile strength according to claim 1, characterized in that: The outer sheath (1) is made of polyvinyl chloride material, and the steel strip armor (2) is made of galvanized steel strip material.

5. A cable with high tensile strength according to claim 1, characterized in that: The first insulating shielding layer (3) is made of cross-linked polyethylene material, and the inner sheath (4) is made of thermoplastic elastomer.

6. The cable with high tensile strength according to claim 1, characterized in that: The conductor shielding layer (9) is made of a semiconductor polymer, and the second insulating shielding layer (8) is made of cross-linked polyethylene material.

7. The cable with high tensile strength according to claim 1, characterized in that: The metal shielding layer (7) is made of copper strip material, and the central frame (6) is made of high-strength plastic material.

8. The cable with high tensile strength according to claim 1, characterized in that: The filler layer (5) is made of foamed polyethylene material.

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