Medium-voltage flexible cable

Abstract

The utility model provides a medium-voltage flexible cable, which relates to the technical field of medium-voltage flexible cables and comprises a conductor, an insulating filling layer is arranged on the outer surface of the conductor, a shielding layer is arranged on the outer surface of the insulating filling layer, and a wear-resistant layer is arranged on the outer surface of the shielding layer. According to the utility model, the shielding layer is formed by densely weaving annealed soft round copper wires, so that the overall flexibility and bendability of the cable are improved, the wear-resistant layer enhances the wear resistance of the cable and protects the cable from external physical damage, and the lubricating layer reduces the friction force of the cable in the use process, so that the service life of the cable is prolonged. The tensile strength and the tension resistance of the cable are improved by the tensile reinforcing layer, the cable is prevented from being damaged during stretching or bending, the protective sleeve has good wear resistance and corrosion resistance and also has excellent strength and flexibility, the wear resistance of the cable is improved by each layer through specific materials and design, and the service life of the cable is prolonged. And the cable can maintain long service life and reliability in a complex working environment.

Description

Technical Field

[0001] This utility model relates to the field of medium-voltage flexible cable technology, and in particular to a medium-voltage flexible cable. Background Technology

[0002] Medium-voltage flexible cables are power cables used to transmit medium voltage. They are flexible and bendable, making them suitable for applications requiring frequent movement or bending. Medium-voltage flexible cables typically consist of a conductor, insulation layer, and outer sheath. These cables are widely used in power transmission and equipment connection in industries such as industry, construction, and transportation. Due to their flexibility and bendability, medium-voltage flexible cables can adapt to complex environments and provide reliable power transmission.

[0003] In the existing technology, medium-voltage flexible cables are usually used in industrial and commercial applications, which need to work in complex and harsh environments. However, the conductors and insulation layers of flexible cables are usually relatively fragile and are easily damaged by external physical factors such as friction and scratches, which can lead to external physical damage and in turn cause electrical faults and safety hazards. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the prior art, medium-voltage flexible cables are typically used in industrial and commercial applications and need to operate in complex and harsh environments. However, the conductors and insulation layers of flexible cables are usually quite fragile and easily damaged by external physical forces such as friction and scratches, leading to electrical faults and safety hazards. Therefore, this invention proposes a medium-voltage flexible cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a medium-voltage flexible cable, comprising: a conductor, an insulating filling layer disposed on the outer surface of the conductor, a shielding layer disposed on the outer surface of the insulating filling layer, an abrasion-resistant layer disposed on the outer surface of the shielding layer, a lubricating layer disposed on the outer surface of the abrasion-resistant layer, a tensile-strengthening layer disposed on the outer surface of the lubricating layer, a protective sleeve disposed on the outer surface of the tensile-strengthening layer, and a rodent-proof coating coated on the outer surface of the protective sleeve.

[0006] Preferably, the thickness of the insulating filler layer is set between 10-30 mm.

[0007] Preferably, the thickness of the shielding layer is set between 10-20mm, and the shielding layer is made of fine hand-woven material.

[0008] Preferably, the thickness of the wear-resistant layer is set between 1-9 mm, and the thickness of the lubricating layer is set between 10-50 μm.

[0009] Preferably, the thickness of the tensile reinforcing layer is set between 10-30 mm, and the thickness of the protective sleeve is set between 10-50 mm.

[0010] Preferably, the thickness of the rodent-proof coating is set at about 1 mm.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the shielding layer is made of annealed soft round copper wire by close hand weaving, which improves the overall flexibility and bendability of the cable. The wear-resistant layer enhances the wear resistance of the cable and protects the cable from external physical damage. The lubrication layer reduces the friction of the cable during use. The tensile reinforcement layer increases the tensile strength and tensile capacity of the cable and prevents the cable from being damaged when stretched or bent. The protective sheath has good wear resistance and corrosion resistance, and also has excellent strength and flexibility. Each layer is designed with specific materials to improve the wear resistance of the cable, so that the cable can maintain a long service life and reliability in complex working environments.

[0013] 2. In this utility model, the rodent-proof coating on the protective sleeve can form a protective barrier on the surface of the protective sleeve, preventing rodents or other pests from entering the cable. This can effectively reduce rodent damage and interference to the cable and improve the reliability of the cable. Attached Figure Description

[0014] Figure 1 A perspective view of a medium-voltage flexible cable is provided for this utility model;

[0015] Figure 2 A cross-sectional view of a medium-voltage flexible cable is provided for this utility model;

[0016] Figure 3 This utility model presents a schematic diagram of a protective sleeve structure for a medium-voltage flexible cable.

[0017] Legend: 1. Conductor; 2. Insulating filler layer; 3. Shielding layer; 4. Wear-resistant layer; 5. Lubricating layer; 6. Tensile reinforcement layer; 7. Protective sleeve; 8. Rodent-proof coating. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figures 1-3 As shown, this utility model provides a medium-voltage flexible cable, comprising: a conductor 1, an insulating filling layer 2 disposed on the outer surface of the conductor 1, a shielding layer 3 disposed on the outer surface of the insulating filling layer 2, an abrasion-resistant layer 4 disposed on the outer surface of the shielding layer 3, a lubricating layer 5 disposed on the outer surface of the abrasion-resistant layer 4, a tensile reinforcing layer 6 disposed on the outer surface of the lubricating layer 5, and a protective sleeve 7 disposed on the outer surface of the tensile reinforcing layer 6. The thickness of the insulating filling layer 2 is set between 10-30mm, the thickness of the shielding layer 3 is set between 10-20mm, and the shielding layer 3 is made of tightly hand-woven material. The thickness of the abrasion-resistant layer 4 is set between 1-9mm, the thickness of the lubricating layer 5 is set between 10-50µm, the thickness of the tensile reinforcing layer 6 is set between 10-30mm, and the thickness of the protective sleeve 7 is set between 10-50mm.

[0021] The overall effect of Embodiment 1 is as follows: Conductor 1 is made of a highly conductive metal; the insulating filler layer 2 is made of EPDM rubber, used to cover conductor 1, providing a certain forming and filling function, and reducing the presence of air inside the cable, thus improving the cable's withstand voltage performance; the shielding layer 3 is made of annealed soft round copper wires tightly hand-braided; after being tightly hand-braided, these annealed soft round copper wires intertwine and support each other, further improving the overall flexibility and bendability of the cable. The increased flexibility makes the cable less susceptible to damage under external forces, thereby improving its abrasion resistance; the abrasion-resistant layer 4 is a composite material prepared by mixing nanomaterials (such as silica nanoparticles) with a polymer matrix, enhancing the cable's abrasion resistance and protecting the cable from external physical damage such as friction and scratching. The abrasion-resistant layer 4 can extend the cable's service life and improve its performance. Reliability is ensured through a combination of factors. The lubrication layer 5, made of a lubricant processed into a thin film, is coated onto the surface of the wear-resistant layer 4. Its main function is to reduce friction during cable use. The tensile reinforcement layer 6 is typically made of reinforcing materials, such as reinforcing fibers or metal wires, and its main function is to increase the cable's tensile strength and tensile capacity, preventing damage during stretching or bending. This makes the cable less prone to breakage or damage under external forces, indirectly improving its wear resistance. The protective sheath 7 is made of polyurethane, possessing excellent wear and corrosion resistance, as well as superior strength and flexibility. From the insulation filling layer 2, shielding layer 3, wear-resistant layer 4, lubrication layer 5, tensile reinforcement layer 6 to the protective sheath 7, each layer utilizes specific materials and designs to enhance the cable's wear resistance, enabling the cable to maintain a long service life and high reliability in complex working environments.

[0022] Example 2, as Figures 1-3 As shown, the outer surface of the protective cover 7 is coated with a rodent-proof coating 8, and the thickness of the rodent-proof coating 8 is set at about 1 mm.

[0023] The effect achieved by the entire embodiment 2 is that by applying a special rodent repellent agent to the outside of the protective sleeve 7 to form a rodent repellent coating 8, a protective barrier can be formed on the surface of the protective sleeve 7 to prevent rodents or other pests from entering the cable. This can effectively reduce the damage and interference of rodents to the cable and improve the reliability of the cable.

[0024] Working Principle: Conductor 1 is made of a highly conductive metal. The insulating filler layer 2 is made of EPDM rubber, used to coat conductor 1, providing a certain forming and filling function, reducing the presence of air inside the cable, and improving the cable's withstand voltage performance. The shielding layer 3 is made of annealed soft round copper wire, tightly hand-braided. This tight hand-braiding method interweaves and supports the annealed soft round copper wire, further improving the overall flexibility and bendability of the cable. The wear-resistant layer 4 is a composite material prepared by mixing nanomaterials (such as silica nanoparticles) with a polymer matrix, enhancing the cable's wear resistance and protecting it from external physical damage such as friction and scratches. The wear-resistant layer 4 can extend the cable's service life and improve its reliability. The lubrication layer 5 is made of a lubricant processed into a thin film and coated on the surface of the wear-resistant layer 4. Its main function is to reduce the friction of the cable during use. The tensile reinforcement layer 6 is usually made of reinforcing materials, such as reinforcing fibers or metal wires. Its main function is to increase the tensile strength and tensile capacity of the cable and prevent the cable from being damaged when stretched or bent. The protective sleeve 7 is made of polyurethane, which has good wear resistance and corrosion resistance, as well as excellent strength and flexibility. A special rodent repellent is applied to the outside of the protective sleeve 7 to form a rodent repellent coating 8. This forms a protective barrier on the surface of the protective sleeve 7 to prevent rodents or other pests from entering the cable. This can effectively reduce the damage and interference of rodents to the cable and improve the reliability of the cable.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A medium voltage flexible cable, characterized in that: include: A conductor (1), wherein an insulating filling layer (2) is arranged on the outer surface of the conductor (1), a shielding layer (3) is arranged on the outer surface of the insulating filling layer (2), a wear-resistant layer (4) is arranged on the outer surface of the shielding layer (3), a lubricating layer (5) is arranged on the outer surface of the wear-resistant layer (4), a tensile reinforcement layer (6) is arranged on the outer surface of the lubricating layer (5), a protective cover (7) is arranged on the outer surface of the tensile reinforcement layer (6), and the outer surface of the protective cover (7) is coated with a rodent-proof coating (8).

2. The medium voltage flexible cable according to claim 1, characterized in that: The thickness of the insulating filling layer (2) is set between 10-30 mm.

3. The medium voltage flexible cable according to claim 2, characterized in that: The thickness of the shielding layer (3) is set between 10 and 20 mm, and the shielding layer (3) is formed by dense hand weaving.

4. The medium voltage flexible cable according to claim 3, characterized in that: The thickness of the wear-resistant layer (4) is set between 1 and 9 mm, and the thickness of the lubricating layer (5) is set between 10 and 50 μm.

5. The medium voltage flexible cable according to claim 4, characterized in that: The thickness of the tensile reinforcement layer (6) is set between 10 and 30 mm, and the thickness of the protective cover (7) is set between 10 and 50 mm.

6. The medium voltage flexible cable according to claim 5, characterized in that: The thickness of the rodent-proof coating (8) is set at about 1 mm.

Images