Cable with cable protection sleeve
Through multi-layer structural design and precision process connection, the problem of cable damage under high temperature fire and complex mechanical pressure is solved, realizing multiple protections and stable transmission of the cable, and improving mechanical strength and electrical safety.
Patent Information
- Application Number
- CN202520208749.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing cables lack sufficient fire resistance and high-temperature resistance in high-temperature or fire environments, and are easily damaged under complex mechanical pressure, failing to effectively cope with frequent stretching, bending, or impact.
It adopts a multi-layer structure design, including a protective outer layer, a shielding layer, an insulating layer, a reinforcing layer, a fireproof layer, a filling layer, and a winding layer. These layers are connected by precision processes such as hot pressing, extrusion, and metal braiding to ensure a tight bond between them and provide multiple layers of physical and electrical protection.
It improves the mechanical strength and tensile strength of the cable, ensures electrical safety and stable signal transmission, solves the problems of cable damage and electrical faults in harsh environments, and significantly improves service life and working performance.
Smart Images
Figure CN223842652U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable technology, and in particular to a cable with a cable protective sheath. Background Technology
[0002] With the continuous development of power, communication, and data transmission, the requirements for cables are becoming increasingly stringent. As a crucial infrastructure in modern society, cables are responsible for transmitting power, signals, and data, thus placing stricter demands on their performance, stability, and safety. Especially in special environments such as industry, construction, communications, oil exploration, and mining, cables need to withstand multiple challenges including high temperatures, humidity, electromagnetic interference, fire, and mechanical damage. Therefore, designing cables with high mechanical strength, electrical isolation, safety, and protective capabilities has become increasingly important.
[0003] A cable is a device for transmitting electrical energy or signals, commonly used in power transmission, communications, and other fields. Taking power cables as an example, they mainly consist of a conductor, an insulation layer, and a sheath. The conductor is responsible for conducting current and is usually made of copper or aluminum; the insulation layer isolates current, ensuring safety; the sheath protects the internal structure and enhances mechanical strength. During operation, current is transmitted through the conductor, and all layers work together to ensure a stable and safe power supply.
[0004] While the outer protective layer or shielding layer of a cable can prevent external physical damage and electromagnetic interference, the fire resistance and high temperature resistance of existing cables are insufficient in high-temperature or fire environments, which can easily lead to fire risks. Secondly, the structure and design of traditional cables are often unable to effectively cope with complex mechanical pressures, such as frequent stretching, bending or impact, which makes the cables prone to damage in these environments. Therefore, a cable with a cable protective sheath is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a cable with a cable protection sheath, aiming to improve the existing technology where the outer protective layer or shielding layer of the cable can prevent external physical damage and electromagnetic interference, but in high temperature or fire environments, the fire resistance and high temperature resistance of the existing cable are insufficient, which can easily cause fire risks; secondly, the structure and design of traditional cables often cannot effectively cope with complex mechanical pressures, such as frequent stretching, bending or impact, which makes the cable easy to be damaged in these environments.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a cable with a cable protective sheath, comprising a cable protective sheath body, an outer protective layer provided on the outside of the cable protective sheath body for preventing external physical damage; a shielding layer provided inside the outer protective layer for blocking electromagnetic interference; an insulation layer provided inside the shielding layer for providing electrical isolation; a reinforcing layer provided inside the insulation layer for enhancing the tensile strength of the cable; a fireproof layer provided outside the reinforcing layer for improving the fire resistance of the cable; a filling layer provided inside the fireproof layer for filling the gaps inside the cable; a winding layer wrapped around the filling layer for providing additional mechanical protection; and the innermost layer of the cable being a conductor layer for transmitting current.
[0007] As a further description of the above technical solution: the conductor layer of the cable is made of copper or aluminum, and the conductor layer is tightly bonded to the insulation layer through a hot-pressing process, so that the current flows through the conductor without any interference or leakage.
[0008] As a further description of the above technical solution: the winding layer is a metal wire winding layer, and the metal wire is copper wire, copper-plated steel wire or aluminum wire. The winding layer is formed by winding the metal wire evenly around the outside of the filler layer through winding technology to form an outer layer with high strength and mechanical protection.
[0009] As a further description of the above technical solution: the reinforcing layer is made of steel wire rope, steel strip or aramid fiber material, and the reinforcing layer is connected to the insulation layer by weaving or extrusion process to ensure a firm bond between the insulation layer and the filling layer;
[0010] As a further description of the above technical solution: the fireproof layer is a glass fiber layer or a fire-resistant coating. The fireproof layer is directly attached to the outside of the reinforcing layer by hot pressing or coating process to provide additional fire protection. The connection between the fireproof layer and the reinforcing layer is by adhesive bonding or fusion bonding to ensure that the fireproof layer and the reinforcing layer will not peel off or be damaged, thereby providing continuous fire protection.
[0011] As a further description of the above technical solution: the insulation layer is made of polyethylene, polyvinyl chloride or cross-linked polyethylene material. The insulation layer is tightly bonded to the conductor layer and the shielding layer through an extrusion molding process to ensure electrical isolation and prevent leakage. The high adhesion of the insulation layer between the conductor layer and the shielding layer ensures that it will not fall off or be damaged, thereby ensuring the safe operation of the cable.
[0012] As a further description of the above technical solution: the shielding layer is made of aluminum foil, copper foil or metal braided mesh material, and the shielding layer is connected to the insulating layer by metal braiding or metal foil bonding technology to prevent signal leakage. The aluminum foil or copper foil is directly wrapped or pressed onto the insulating layer to form good electrical contact.
[0013] As a further description of the above technical solution: the filler layer is polyethylene, polypropylene, or fiber material. The filler layer is bonded to the insulation layer and the reinforcing layer through an extrusion process to fill the gaps inside the cable and ensure its structural stability. The polyethylene and polypropylene provide better mechanical support to reduce the deformation of the cable during bending and stretching, while the fiber material can enhance the flexibility and toughness of the filler layer.
[0014] This utility model has the following beneficial effects:
[0015] 1. This utility model employs a multi-layered structural design, including a protective outer layer, a shielding layer, an insulation layer, a reinforcing layer, a fireproof layer, a filling layer, and a winding layer, achieving multiple physical and electrical protection effects. This effectively prevents the cable from external physical damage, electromagnetic interference, current leakage, and fire risks. Compared to existing cable technologies that rely on only a single layer of protection, this comprehensive protection not only enhances the cable's mechanical strength and tensile strength but also ensures electrical safety and stable signal transmission, overcoming the shortcomings of traditional cables that are prone to damage and electrical faults in harsh environments.
[0016] 2. This utility model employs high-adhesion and precision-process connection technologies, such as hot pressing, extrusion molding, and metal braiding, achieving a tight bond between layers and ensuring the stability and reliability of the cable during long-term use. Compared to existing technologies with simpler connection methods and weaker bonding between layers, this invention, through precise control of processes and material selection, solves the problem of connection detachment or damage that may occur in traditional cables under high temperature, high pressure, and frequent bending conditions, significantly improving the cable's service life and performance. Attached Figure Description
[0017] Figure 1 This is an overall structural diagram of a cable with a cable protective sleeve proposed in this utility model;
[0018] Figure 2 A cross-sectional view of a cable with a cable protective sheath proposed in this utility model. Figure 1 ;
[0019] Figure 3 A cross-sectional view of a cable with a cable protective sheath proposed in this utility model. Figure 2 .
[0020] Legend:
[0021] 1. Cable protection sleeve body; 2. Protective outer layer; 3. Shielding layer; 4. Insulation layer; 5. Reinforcing layer; 6. Fireproof layer; 7. Filling layer; 8. Wrapping layer; 9. Conductor layer. 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 1-3This utility model provides an embodiment of a cable with a cable protective sheath, comprising a cable protective sheath body 1, an outer protective layer 2 on the outside of the cable protective sheath body 1, which has the function of preventing external physical damage, effectively preventing the cable from being hit, scratched or mechanically damaged by the outside, thereby extending the service life of the cable; a shielding layer 3 is provided inside the outer protective layer 2, which is mainly used to block electromagnetic interference, prevent external electromagnetic waves from interfering with the signals or currents transmitted inside the cable, and at the same time prevent the electromagnetic waves emitted by the cable itself from affecting surrounding equipment; an insulation layer 4 is provided inside the shielding layer 3, which provides electrical isolation, ensuring that the current in the cable does not leak into the external environment, and at the same time prevents external current or electrical signals from entering the cable, ensuring the stability and safety of the electrical system; a reinforcing layer 5 is provided inside the insulation layer 4, which enhances the tensile strength of the cable and enhances the durability of the cable, especially when stretched, bent or subjected to external forces, it can effectively prevent the cable from breaking or deforming, ensuring the reliability of the cable in complex and harsh environments; A fireproof layer 6 is installed outside the reinforcing layer 5. The fireproof layer 6 increases the fire resistance of the cable, preventing the cable material from burning or the spread of flames in the event of a fire, ensuring the stability of the cable during a fire, reducing the risk of electrical fires, and providing higher safety. Inside the fireproof layer 6 is a filling layer 7, which fills the gaps inside the cable, preventing the cable structure from becoming loose, providing higher structural stability, thereby enhancing the overall strength and durability of the cable, and preventing performance degradation caused by gaps inside the cable. The filling layer 7 is wrapped with a winding layer 8, which provides additional mechanical protection through the form of metal wire winding, improving the tensile strength and compressive strength of the cable, preventing damage to the internal structure of the cable when subjected to external forces, and the winding layer 8 also provides electromagnetic shielding function to ensure the electrical safety of the cable during operation. The innermost layer of the cable is the conductor layer 9, which is responsible for current transmission through its high conductivity. The use of copper or aluminum materials can effectively reduce resistance, improve the transmission efficiency of the cable, and ensure that the current flows inside the conductor without any interference or leakage.
[0024] The conductor layer 9 of the cable is made of copper or aluminum, both of which have excellent conductivity and durability. The copper or aluminum conductor layer 9 is tightly bonded to the insulation layer 4 through a hot-pressing process, ensuring that the current can flow inside the conductor without any interference or leakage. At the same time, the stability and efficiency of the current flow are guaranteed, avoiding the occurrence of electrical accidents.
[0025] The winding layer 8 is a metal wire winding layer. The metal wire is copper wire, copper-plated steel wire or aluminum wire. These materials can provide high tensile strength and corrosion resistance. The winding layer 8 uses a winding technology to evenly wind the metal wire around the outside of the filler layer 7. This winding method ensures the robustness of the cable's external structure and protects the cable from external tension, bending or other physical pressure, forming a high-strength protective layer to prevent damage to the inner layer of the cable.
[0026] The reinforcing layer 5 is made of steel wire rope, steel strip or aramid fiber material, which has high tensile strength and impact resistance. The reinforcing layer 5 is connected to the insulation layer 4 by braiding or extrusion process to ensure a firm bond between the reinforcing layer 5, the insulation layer 4 and the filling layer 7, so that the cable has higher tensile strength, can adapt to more harsh environmental conditions and reduce damage caused by mechanical stress.
[0027] Fireproof layer 6 is a fiberglass layer or fire-resistant coating. Fireproof layer 6 is directly attached to the outside of reinforcing layer 5 through hot pressing or coating process, providing additional fire protection, ensuring that the cable can maintain structural integrity in high temperature or fire environment, preventing the spread of flames, and providing effective fire protection. The connection between fireproof layer 6 and reinforcing layer 5 is achieved by adhesive or fusion bonding, ensuring that there will be no peeling or damage between fireproof layer 6 and reinforcing layer 5, thereby providing continuous fire protection.
[0028] The insulation layer 4 is made of polyethylene, polyvinyl chloride or cross-linked polyethylene. The insulation layer 4 is tightly bonded to the conductor layer 9 and the shielding layer 3 through an extrusion molding process to ensure electrical isolation and prevent leakage. This high-adhesion connection method ensures a firm connection between the insulation layer 4 and the conductor layer 9 and the shielding layer 3, avoids electrical accidents, and ensures the safe operation of the cable.
[0029] The shielding layer 3 is made of aluminum foil, copper foil or metal braided mesh. The shielding layer 3 is connected to the insulation layer 4 through metal braiding or metal foil bonding technology to prevent signal leakage and ensure stable signal transmission of the cable. The aluminum foil or copper foil is directly wrapped or pressed onto the insulation layer 4 to form good electrical contact, further enhance the cable's anti-electromagnetic interference capability and prevent signal interference.
[0030] The filler layer 7 is made of polyethylene, polypropylene, or fiber material. The filler layer 7 is bonded to the insulation layer 4 and the reinforcing layer 5 through an extrusion process. It is used to fill the gaps inside the cable and ensure its structural stability. Polyethylene and polypropylene provide better mechanical support to reduce the deformation of the cable during bending and stretching, while fiber material can enhance the flexibility and toughness of the filler layer 7 and ensure the stability of the cable in various operating environments.
[0031] Working Principle: Firstly, the cable relies on the outer layer of the cable sheath body 1 for protection. The outer protective layer 2 is responsible for preventing damage to the cable in various external physical environments, ensuring long-term stable operation. The shielding layer 3 inside the outer protective layer 2 primarily prevents electromagnetic interference (EMI), ensuring that the signals transmitted within the cable are not affected by the external electromagnetic environment. This effectively reduces interference and signal distortion, playing a crucial role, especially in data transmission and precision equipment. The insulation layer 4 inside the shielding layer 3 provides electrical isolation, ensuring that current does not leak through the external conductor, preventing electrical accidents caused by leakage, and protecting external equipment from current interference. The high adhesion of the insulation layer 4 tightly bonds with the conductor layer 9, further enhancing electrical safety and ensuring stable operation of the cable under different operating conditions. The reinforcing layer 5 inside the insulation layer 4 improves the cable's tensile strength and overall structural stability, preventing structural damage during stretching or bending. This is particularly suitable for applications requiring mechanical pressure or significant external forces, such as construction, power, and mining environments. The fire-retardant layer 6 outside the reinforcing layer 5 is attached via hot pressing or coating processes. The fireproof layer 6 and the reinforcing layer 5 are bonded or melt-bonded to prevent peeling between the two layers, thus ensuring the durability and efficiency of fire protection. The filling layer 7 inside the fireproof layer 6 fills the gaps inside the cable and enhances the structural stability of the cable. The filling layer 7 uses polyethylene, polypropylene or fiber materials to ensure that the cable is not easily deformed when bent or stretched, and the filling layer 7 also provides good mechanical support. The outer winding layer 8 is made of metal wire, copper wire, copper-plated steel wire or aluminum wire, which is evenly wound around the outside of the filling layer 7 to form a high-strength protective layer, further improving the tensile strength of the cable and providing additional electromagnetic shielding function to ensure the electrical safety of the cable and prevent damage to the internal structure by external physical pressure. Finally, the conductor layer 9, as the core part of the cable, is responsible for the transmission of current. The conductor layer 9 is made of copper or aluminum and is tightly bonded to the insulation layer 4 through a hot pressing process to ensure that the current flows inside the conductor without any interference or leakage. The high conductivity of the conductor layer 9 can effectively improve the transmission efficiency of the cable.
[0032] 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 a cable protective sheath, comprising a cable protective sheath body (1), characterized in that: The cable protective sleeve body (1) is provided with an outer protective layer (2) to prevent external physical damage; a shielding layer (3) is provided inside the outer protective layer (2) to block electromagnetic interference; an insulation layer (4) is provided inside the shielding layer (3) to provide electrical isolation; a reinforcing layer (5) is provided inside the insulation layer (4) to enhance the tensile strength of the cable; a fireproof layer (6) is provided outside the reinforcing layer (5) to improve the fire resistance of the cable; a filling layer (7) is provided inside the fireproof layer (6) to fill the gaps inside the cable; a winding layer (8) is wrapped around the filling layer (7) to provide additional mechanical protection; the innermost layer of the cable is a conductor layer (9) to transmit current.
2. The cable with a cable protective sheath according to claim 1, characterized in that: The conductor layer (9) of the cable is made of copper or aluminum. The conductor layer (9) is tightly bonded to the insulation layer (4) by a hot pressing process, so that the current can flow through the conductor without any interference or leakage.
3. A cable with a cable protective sheath according to claim 1, characterized in that: The winding layer (8) is a metal wire winding layer. The metal wire is copper wire, copper-plated steel wire or aluminum wire. The winding layer (8) is formed by winding the metal wire evenly around the outside of the filler layer (7) through winding technology to form an outer layer with high strength and mechanical protection.
4. A cable with a cable protective sheath according to claim 1, characterized in that: The reinforcing layer (5) is made of steel wire rope, steel strip or aramid fiber material. The reinforcing layer (5) is connected to the insulating layer (4) by weaving or extrusion process to ensure a firm bond between the insulating layer (4) and the filling layer (7).
5. A cable with a cable protective sheath according to claim 1, characterized in that: The fireproof layer (6) is a fiberglass layer or a fire-resistant coating. The fireproof layer (6) is directly attached to the outside of the reinforcing layer (5) by hot pressing or coating process to provide additional fire protection. The connection between the fireproof layer (6) and the reinforcing layer (5) is by adhesive bonding or melting bonding to ensure that the fireproof layer (6) and the reinforcing layer (5) will not peel off or be damaged, thereby providing continuous fire protection.
6. A cable with a cable protective sheath according to claim 1, characterized in that: The insulation layer (4) is made of polyethylene, polyvinyl chloride or cross-linked polyethylene. The insulation layer (4) is tightly bonded to the conductor layer (9) and the shielding layer (3) by an extrusion molding process to ensure electrical isolation and prevent leakage. The high adhesion of the insulation layer (4) between the conductor layer (9) and the shielding layer (3) ensures that it will not fall off or be damaged, thus ensuring the safe operation of the cable.
7. A cable with a cable protective sheath according to claim 1, characterized in that: The shielding layer (3) is made of aluminum foil, copper foil or metal woven mesh material. The shielding layer (3) is connected to the insulating layer (4) by metal weaving or metal foil bonding technology to prevent signal leakage. The aluminum foil or copper foil is directly wrapped or pressed onto the insulating layer (4) to form good electrical contact.
8. A cable with a cable protective sheath according to claim 1, characterized in that: The filler layer (7) is made of polyethylene, polypropylene or fiber material. The filler layer (7) is bonded to the insulation layer (4) and the reinforcing layer (5) by an extrusion process to fill the gaps inside the cable and ensure its structural stability. The polyethylene and polypropylene provide better mechanical support to reduce the deformation of the cable during bending and stretching, while the fiber material can enhance the flexibility and toughness of the filler layer (7).