A high tensile strength and easy-to-lay cable

Abstract

This application provides a high tensile strength and easy-to-lay cable, comprising a conductor, an insulation layer, a shielding layer assembly, a reinforcing layer, and an outer sheath. The outer sheath is made of polyvinyl chloride (PVC) and includes a layered main body and corrugated components on its outer periphery. By adding an independent reinforcing layer structure, the tensile strength is effectively improved without significantly increasing the cable diameter or the thickness of each layer, preventing damage to the internal conductor and shielding layer due to external tensile forces, and significantly extending the cable's service life. By setting regularly distributed corrugated components on the surface of the outer sheath, the surface friction coefficient is increased, making it easier to position and fix the cable when laid in pipes or supports, reducing construction difficulty and improving work efficiency. In addition, the PVC outer sheath combines weather resistance and mechanical strength. The corrugated components and the layered main body are integrally molded, resulting in a compact overall structure and controllable manufacturing costs. It has the advantages of simple structure, low implementation cost, and ease of promotion and implementation.

Description

Technical Field

[0001] This application belongs to the field of cable manufacturing technology, specifically relating to a high tensile strength and easy-to-lay cable. Background Technology

[0002] In the field of power transmission, the performance of cables plays a crucial role in ensuring the stability and security of power supply. Especially in scenarios requiring frequent movement or bending, traditional cables have many problems in terms of tensile strength and ease of installation, which urgently need improvement.

[0003] Traditional cables typically enhance their tensile strength by adding metal wires or Kevlar fibers. While these materials effectively improve tensile strength, they also increase cable stiffness and significantly reduce flexibility. During actual installation, these stiffer cables struggle to adapt to bending requirements, easily leading to stress concentration at bends, which in turn affects the cable's lifespan and reliability.

[0004] Furthermore, the sheath surface of traditional cables is typically quite smooth. During installation, this smooth surface can easily cause the cable to slip, increasing the difficulty and time cost of installation. This problem is particularly pronounced in scenarios requiring precise laying and securing, causing numerous inconveniences for construction workers.

[0005] Therefore, in view of the shortcomings of traditional cables in terms of tensile strength and ease of laying, there is an urgent need to develop a cable with high tensile strength and easy laying to optimize its performance, while taking into account flexibility, so as to improve the adaptability and service life of the cable in complex scenarios and meet the high efficiency and stability requirements of modern power transmission. Utility Model Content

[0006] In order to address the technical problems of existing cables, such as low tensile strength, damage to the internal structure during frequent movement, reduced cable lifespan, significantly reduced flexibility by increasing cable diameter and thickness of each layer, and low ease of installation due to the smooth outer sheath, this application proposes a high tensile strength and easy-to-install cable.

[0007] This application adopts the following solution: a high tensile strength and easy-to-lay cable, comprising a conductor, an insulation layer covering the outer periphery of the conductor, a shielding layer group covering the outer periphery of the insulation layer, a reinforcing layer covering the outer periphery of the shielding layer group, and an outer sheath layer covering the outer periphery of the reinforcing layer. The outer sheath layer comprises a layered main body and a corrugated assembly disposed on the outer periphery of the layered main body. The material of the outer sheath layer is polyvinyl chloride.

[0008] In some feasible embodiments, the corrugated assembly includes corrugated crests, corrugated troughs, and a clearance gap disposed between the corrugated crests and corrugated troughs, which are alternately arranged along the length of the cable. The length of the clearance gap is defined as L, and L satisfies the following relationship: 0.5mm≤L≤2mm.

[0009] In some feasible embodiments, the height of the crest and the trough are equal, and the height of the crest and the trough is defined as H, wherein H satisfies the following relationship: 0.1mm≤H≤0.5mm.

[0010] In some feasible embodiments, the reinforcing layer is made of nylon fiber and is spirally wound around the outer periphery of the shielding layer assembly.

[0011] In some feasible embodiments, the pitch of the reinforcing layer is defined as U, where U satisfies the following relationship: 0.5mm≤U≤1mm, and the winding angle of the reinforcing layer is defined as A, where A satisfies the following relationship: 45°≤A≤60°.

[0012] In some feasible embodiments, the shielding layer group includes a first shielding layer covering the outer periphery of the insulating layer and a second shielding layer covering the outer periphery of the first shielding layer, wherein the materials of the first shielding layer and the second shielding layer are different metals.

[0013] In some feasible embodiments, the first shielding layer is made of aluminum foil, the second shielding layer is made of copper wire, and the second shielding layer is spirally wound around the outer periphery of the first shielding layer.

[0014] In some feasible embodiments, the insulating layer is made of cross-linked polyethylene.

[0015] In some feasible embodiments, the conductor is provided with multiple strands, each strand of the conductor being formed by twisting together multiple conductor monofilaments.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] This application provides a high tensile strength and easy-to-lay cable, comprising a conductor, an insulation layer, a shielding layer assembly, a reinforcing layer, and an outer sheath. The outer sheath is made of polyvinyl chloride (PVC) and includes a layered main body and corrugated components on its outer periphery. By adding an independent reinforcing layer structure, the tensile strength is effectively improved without significantly increasing the cable diameter or the thickness of each layer, preventing damage to the internal conductor and shielding layer due to external tensile forces, and significantly extending the cable's service life. By setting regularly distributed corrugated components on the surface of the outer sheath, the surface friction coefficient is increased, making it easier to position and fix the cable when laid in pipes or supports, reducing construction difficulty and improving work efficiency. In addition, the PVC outer sheath combines weather resistance and mechanical strength. The corrugated components and the layered main body are integrally molded, resulting in a compact overall structure and controllable manufacturing costs. It has the advantages of simple structure, low implementation cost, and ease of promotion and implementation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of a high tensile strength and easy-to-lay cable according to this application;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of a high tensile strength and easy-to-lay cable in the multi-strand conductor state according to this application;

[0020] Figure 3 This is a schematic diagram of the shielding layer group and the reinforcing layer group of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the outer sheath layer of this application. Detailed Implementation

[0022] Combination Figure 1-4 The following description further illustrates the technical solution proposed in this application. This application provides a high tensile strength and easy-to-lay cable, comprising a conductor 1, an insulation layer 2 covering the outer periphery of the conductor 1, a shielding layer group 3 covering the outer periphery of the insulation layer 2, a reinforcing layer 4 covering the outer periphery of the shielding layer group 3, and an outer sheath layer 5 covering the outer periphery of the reinforcing layer 4. The outer sheath layer 5 comprises a layered main body 50 and a corrugated assembly 51 disposed on the outer periphery of the layered main body 50. The outer sheath layer 5 is made of polyvinyl chloride.

[0023] This application provides a high tensile strength and easy-to-lay cable, comprising a conductor, an insulation layer, a shielding layer assembly, a reinforcing layer, and an outer sheath. The outer sheath is made of polyvinyl chloride (PVC) and includes a layered main body and corrugated components on its outer periphery. By adding an independent reinforcing layer structure, the tensile strength is effectively improved without significantly increasing the cable diameter or the thickness of each layer, preventing damage to the internal conductor and shielding layer due to external tensile forces, and significantly extending the cable's service life. By setting regularly distributed corrugated components on the surface of the outer sheath, the surface friction coefficient is increased, making it easier to position and fix the cable when laid in pipes or supports, reducing construction difficulty and improving work efficiency. In addition, the PVC outer sheath combines weather resistance and mechanical strength. The corrugated components and the layered main body are integrally molded, resulting in a compact overall structure and controllable manufacturing costs. It has the advantages of simple structure, low implementation cost, and ease of promotion and implementation.

[0024] In this embodiment, the corrugated component 51 includes a crest portion 510, a trough portion 511 alternately arranged along the length of the cable, and a clearance gap 512 disposed between the crest portion 510 and the trough portion 511. The length of the clearance gap 512 is defined as L, and L satisfies the following relationship: 0.5mm≤L≤2mm.

[0025] For example, the value of L is 0.5mm, 1mm, 1.5mm, or 2mm.

[0026] In practical implementation, setting up corrugated components has the following advantages:

[0027] Firstly, it increases the surface area of ​​the sheath layer, thereby increasing its contact area with the external environment and enhancing its wear resistance. This helps extend the service life of the sheath layer and reduce damage caused by friction or wear.

[0028] Secondly, the corrugated components form additional structural support on the outer sheath, increasing its tear resistance. When subjected to external tearing forces, the corrugated components can disperse stress, preventing the sheath from being easily torn.

[0029] Third, the corrugated component increases the friction between the outer sheath and external objects, making it more difficult for the outer sheath to slide or fall off.

[0030] Fourth, the corrugated surface of the component provides a better grip and reduces operational errors caused by slipping or unstable grip.

[0031] Fifth, the corrugated design disperses the stress generated in the sheath layer during bending, reducing bending fatigue or damage caused by stress concentration. This helps extend the service life of the outer sheath layer in dynamic or frequent bending applications.

[0032] In practical implementation, using polyvinyl chloride (PVC) as the material for the outer sheath has the following advantages:

[0033] Firstly, polyvinyl chloride (PVC) has excellent weather resistance, resisting the erosion of environmental factors such as ultraviolet radiation, rain, and temperature changes. The corrugated raised design further enhances the durability of the sheath layer in these harsh environments.

[0034] Secondly, polyvinyl chloride (PVC) exhibits excellent stability against a variety of chemicals, resisting corrosion from acids, alkalis, oils, and other substances. This allows the outer sheath to maintain stable performance in various industrial or chemical environments.

[0035] In this embodiment, the height of the crest portion 510 and the trough portion 511 are equal. The height of the crest portion 510 and the trough portion 511 is defined as H, and H satisfies the following relationship: 0.1mm≤H≤0.5mm.

[0036] For example, the value of H is 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm.

[0037] In this embodiment, the reinforcing layer 4 is made of nylon fiber and is spirally wound around the outer periphery of the shielding layer group 3.

[0038] In this embodiment, the pitch of the reinforcing layer 4 is defined as U, and U satisfies the following relationship: 0.5mm≤U≤1mm. The winding angle of the reinforcing layer 4 is defined as A, and A satisfies the following relationship: 45°≤A≤60°.

[0039] For example, the value of U is 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm.

[0040] For example, the value of A is 45°, 50°, 55°, or 60°.

[0041] In practical implementation, winding nylon fibers around the shielding layer assembly has the following advantages:

[0042] Firstly, nylon fibers, with their high strength properties, can significantly improve the tensile strength of the protected object through helical winding. This reinforcing effect is particularly pronounced in applications with dynamic or varying loads.

[0043] Secondly, the spiral structure of nylon fibers allows the cable to undergo a certain degree of elastic deformation when subjected to external forces, thereby absorbing energy and reducing damage caused by sudden impacts or vibrations.

[0044] Thirdly, the tight spiral winding of nylon fibers forms a wear-resistant layer that can resist friction and scratches from external objects, protecting internal cables or pipes from damage.

[0045] Fourth, the helical structure of nylon fibers helps to disperse stress generated by bending, twisting and other actions, reducing the risk of fatigue fracture caused by stress concentration.

[0046] Fifth, nylon fiber has certain moisture-proof and corrosion-proof properties, which can provide additional protection for internal cables or pipes, preventing damage caused by moisture or chemicals.

[0047] In this embodiment, the shielding layer group 3 includes a first shielding layer 30 covering the outer periphery of the insulating layer 2 and a second shielding layer 31 covering the outer periphery of the first shielding layer 30. The materials of the first shielding layer 30 and the second shielding layer 31 are different metals.

[0048] In this embodiment, the first shielding layer 30 is made of aluminum foil, the second shielding layer 31 is made of copper wire, and the second shielding layer 31 is spirally wound around the outer periphery of the first shielding layer 30.

[0049] In actual implementation, using aluminum foil for the first shielding layer and copper wire for the second shielding layer has the following advantages:

[0050] Firstly, aluminum foil has excellent conductivity and electromagnetic wave reflection capabilities, which can effectively block interference from external electromagnetic fields and protect the signals inside the cable from external influences.

[0051] Secondly, copper wire provides an additional electromagnetic shielding layer, and its dense winding structure can further block the penetration of electromagnetic waves, improving the shielding effectiveness of the cable.

[0052] In this embodiment, the insulating layer 2 is made of cross-linked polyethylene.

[0053] In practical implementation, using cross-linked polyethylene as the material for the insulation layer has the following advantages:

[0054] Firstly, cross-linked polyethylene has extremely high electrical breakdown strength, which means that it can maintain its insulation properties under high voltage and is not prone to breakdown or short circuit.

[0055] Secondly, after cross-linking treatment, chemical bonds are formed between the molecular chains of cross-linked polyethylene, giving the material higher tensile strength and toughness, and enabling it to withstand greater mechanical stress.

[0056] Third, cross-linked polyethylene has significantly improved heat resistance, can maintain stable insulation properties at higher temperatures, and is not prone to aging or decomposition.

[0057] Fourth, cross-linked polyethylene has excellent antioxidant and UV resistance properties, which can resist the erosion of environmental factors (such as oxygen, moisture, ultraviolet rays, etc.) for a long time and extend the service life of the cable.

[0058] In this embodiment, the conductor 1 is provided with multiple strands, and each conductor 1 is formed by twisting together multiple conductor monofilaments 10.

[0059] This application provides a high tensile strength and easy-to-lay cable, comprising a conductor, an insulation layer, a shielding layer assembly, a reinforcing layer, and an outer sheath. The outer sheath is made of polyvinyl chloride (PVC) and includes a layered main body and corrugated components on its outer periphery. By adding an independent reinforcing layer structure, the tensile strength is effectively improved without significantly increasing the cable diameter or the thickness of each layer, preventing damage to the internal conductor and shielding layer due to external tensile forces, and significantly extending the cable's service life. By setting regularly distributed corrugated components on the surface of the outer sheath, the surface friction coefficient is increased, making it easier to position and fix the cable when laid in pipes or supports, reducing construction difficulty and improving work efficiency. In addition, the PVC outer sheath combines weather resistance and mechanical strength. The corrugated components and the layered main body are integrally molded, resulting in a compact overall structure and controllable manufacturing costs. It has the advantages of simple structure, low implementation cost, and ease of promotion and implementation.

[0060] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high tensile and easy to install cable, characterized in that, It includes a conductor (1), an insulating layer (2) covering the outer periphery of the conductor (1), a shielding layer group (3) covering the outer periphery of the insulating layer (2), a reinforcing layer (4) covering the outer periphery of the shielding layer group (3), and an outer sheath layer (5) covering the outer periphery of the reinforcing layer (4). The outer sheath layer (5) includes a layered body (50) and a corrugated component (51) disposed on the outer periphery of the layered body (50). The material of the outer sheath layer (5) is polyvinyl chloride. The reinforcing layer (4) is made of nylon fiber and is spirally wound around the outer periphery of the shielding layer group (3).

2. A high tensile and easy to install cable according to claim 1, characterized in that, The corrugated assembly (51) includes a crest portion (510) and a trough portion (511) alternately arranged along the length of the cable, and a clearance gap (512) disposed between the crest portion (510) and the trough portion (511). The length of the clearance gap (512) is defined as L, and L satisfies the following relationship: 0.5mm≤L≤2mm.

3. A high tensile and easy to install cable according to claim 2, characterized in that, The height of the crest (510) and the trough (511) are equal. The height of the crest (510) and the trough (511) is defined as H, and H satisfies the following relationship: 0.1mm≤H≤0.5mm.

4. A high tensile and easy to install cable according to claim 1, characterized in that, The pitch of the reinforcing layer (4) is defined as U, and U satisfies the following relationship: 0.5mm≤U≤1mm. The winding angle of the reinforcing layer (4) is defined as A, and A satisfies the following relationship: 45°≤A≤60°.

5. The high tensile strength and easy-to-lay cable according to claim 1, characterized in that, The shielding layer group (3) includes a first shielding layer (30) covering the outer periphery of the insulating layer (2) and a second shielding layer (31) covering the outer periphery of the first shielding layer (30). The material of the first shielding layer (30) and the material of the second shielding layer (31) are different metals.

6. A highly tensile and easy to install cable according to claim 5, characterized in that, The first shielding layer (30) is made of aluminum foil, and the second shielding layer (31) is made of copper wire. The second shielding layer (31) is spirally wound around the outer periphery of the first shielding layer (30).

7. A high tensile and easy to install cable according to claim 1, characterized in that, The insulating layer (2) is made of cross-linked polyethylene.

8. A high tensile and easy to install cable according to claim 1, characterized in that, The conductor (1) has multiple strands, and each conductor (1) is formed by twisting together multiple conductor monofilaments (10).

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