High-temperature-resistant and wear-resistant composite insulated cable
By introducing a combined structure of PVC insulation sleeve, conductor shielding layer, anti-corrosion layer, heat insulation and flame retardant unit and flexible outer sheath into the cable, the problems of easy ignition and insufficient wear resistance of the cable at high temperature are solved, and heat resistance, heat insulation and wear resistance are achieved.
Patent Information
- Application Number
- CN202520326953.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing insulated cables are prone to catching fire at high temperatures and lack wear-resistant protection, resulting in a shortened service life.
The cable adopts a combined structure of PVC insulation sleeve, conductor shielding layer, anti-corrosion layer, heat insulation and flame retardant unit and flexible outer sheath, combined with wear-resistant nylon tape and nylon braided strips to enhance the cable's heat resistance, heat insulation and wear resistance.
It effectively insulates against heat to prevent internal fires in the cable and extends the cable's service life through abrasion-resistant protection.
Smart Images
Figure CN223797178U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire and cable technology, specifically to a high-temperature resistant and wear-resistant composite insulated cable. Background Technology
[0002] Wires and cables are wire products used to transmit electrical energy, information and realize electromagnetic energy conversion. In a broad sense, wires and cables are also simply referred to as cables. In a narrow sense, cables refer to insulated cables, which can be defined as: an assembly consisting of one or more insulated wire cores, and their respective possible covering layers, a total protective layer and an outer sheath.
[0003] Most wires and cables on the market currently use fireproof or flame-retardant layers to protect the internal core structure, thus ensuring that the cable is not affected by high temperatures. The combination of halogen-free, low-smoke flame-retardant insulation and halogen-free, low-smoke flame-retardant filler not only ensures insulation from the cable core but also provides excellent flame-retardant properties, ensuring that the cable can be used for longer periods at high temperatures.
[0004] However, most existing insulated cables do not have good heat resistance and insulation properties. When a fire occurs, high temperature conduction can easily cause internal fires in the cable, affecting its use. Moreover, most existing cables are not suitable for setting wear-resistant protective structures on the outside of the sheath. Sheath wear can easily lead to the exposure of the wire core, resulting in certain defects in use. Therefore, we propose a high-temperature resistant and wear-resistant composite insulated cable to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this utility model is to provide a high-temperature resistant and wear-resistant composite insulated cable to solve the problems mentioned in the background art. The flame-retardant protection of existing insulated cables mostly does not have good heat resistance and insulation. When a fire occurs, high temperature conduction can easily cause internal fire in the cable, affecting the use of the cable. Moreover, most existing cables are not convenient to set wear-resistant protective structures on the outside of the sheath, and sheath wear can easily lead to the exposure of the wire core.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant and wear-resistant composite insulated cable, comprising a core unit, wherein the core unit includes a PVC insulating sleeve, and a copper cable core is disposed inside the PVC insulating sleeve; a conductor shielding layer is disposed outside the core unit, and an anti-corrosion layer is disposed outside the conductor shielding layer; a heat-insulating and flame-retardant unit is disposed outside the anti-corrosion layer, and a flexible outer sheath is disposed outside the heat-insulating and flame-retardant unit; the heat-insulating and flame-retardant unit includes a fire-resistant mica tape disposed between the anti-corrosion layer and the flexible outer sheath.
[0007] The outer surface of the flexible outer sheath is provided with an adhesive layer, and an abrasion-resistant protection unit is connected to the outside of the adhesive layer. The abrasion-resistant protection unit includes an abrasion-resistant nylon strap disposed on the outside of the adhesive layer.
[0008] As a preferred embodiment of this utility model, the core unit further includes a flexible core sheath disposed outside the copper core of the cable, the flexible core sheath being composed of an insulating filler and an insulating protective sleeve.
[0009] As a preferred technical solution of this utility model, the copper core of the cable is made of stranded or twisted oxygen-free copper wires for cables, and the diameter of the copper wires ranges from 0.16 to 0.22 mm.
[0010] As a preferred embodiment of this utility model, the core unit further includes an anti-tension rope disposed on the outside of the flexible core sheath, and PVC insulating particles are filled between the PVC insulating sleeve and the flexible core sheath.
[0011] As a preferred technical solution of this utility model, the tensile rope and the flexible core sheath are alternately arranged inside the PVC insulation sleeve and play a role in improving the tensile strength of the core unit.
[0012] As a preferred embodiment of this utility model, a filamentous structure made of glass fiber is filled between the anti-corrosion layer and the flexible outer sheath, and the filamentous structure is distributed on the outer side of the fire-resistant mica tape.
[0013] As a preferred technical solution of this utility model, the heat insulation and flame retardant unit is evenly distributed between the anti-corrosion layer and the flexible outer sheath, and the heat insulation and flame retardant unit also includes a heat-resistant rope disposed inside the fire-resistant mica tape, the heat-resistant rope being formed by two strands of Kevlar fiber tape spirally wrapped together.
[0014] As a preferred technical solution of this utility model, the wear-resistant nylon wrapping tape is wrapped around the outside of the adhesive layer along the cable axis, and the wear-resistant nylon wrapping tape is bonded and fixed to the flexible outer sheath through the adhesive layer. The outer surface of the wear-resistant nylon wrapping tape is uniformly provided with raised nylon braided strips.
[0015] Compared with the prior art, the beneficial effects of this utility model are: the high temperature and wear-resistant composite insulated cable has good heat resistance and insulation properties. When a fire occurs, it can effectively insulate against heat and prevent the cable from catching fire inside. At the same time, by setting a wear-resistant protection unit on the outside of the flexible outer sheath, the wear resistance of the flexible outer sheath can be effectively improved.
[0016] 1. By evenly distributing heat-insulating and flame-retardant units between the anti-corrosion layer and the flexible outer sheath, the heat-resistant rope is made of two strands of Kevlar fiber wrapped in a spiral. Kevlar fiber has the characteristics of high strength, good toughness and high temperature resistance. At the same time, the outer side of the heat-insulating and flame-retardant units is filled with glass fiber filaments, which have good heat resistance. The combination of heat-insulating and flame-retardant units and glass fiber filaments between the anti-corrosion layer and the flexible outer sheath plays a role in heat insulation and flame retardancy, thereby increasing the heat resistance of the composite insulated cable and preventing the internal burning of the composite insulated cable.
[0017] 2. By setting a wear-resistant protection unit on the outside of the flexible outer sheath, and wrapping the wear-resistant nylon tape around the outside of the flexible outer sheath with an adhesive layer, the wear-resistant protection effect of the flexible outer sheath can be improved. Furthermore, by setting the nylon braided strip protruding, the nylon braided strip will first rub against the outer contact object when friction occurs, reducing the wear on the flexible outer sheath. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of the core unit in this utility model;
[0020] Figure 3 This is a schematic diagram of the overall structure of the connection between the wear-resistant nylon strap and the nylon braided strip of this utility model;
[0021] Figure 4 This is a schematic diagram of the overall structure of the connection between the fire-resistant mica tape and the heat-resistant rope of this utility model.
[0022] In the diagram: 100, conductor unit; 101, cable copper core; 102, flexible conductor sheath; 103, PVC insulation sleeve; 104, tensile rope; 105, PVC insulation granules; 2, conductor shielding layer; 3, anti-corrosion layer; 400, heat insulation and flame retardant unit; 401, fire-resistant mica tape; 402, heat-resistant rope; 5, flexible outer sheath; 6, adhesive layer; 700, abrasion-resistant protection unit; 701, abrasion-resistant nylon wrapping tape; 702, nylon braided strip. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-4This utility model provides a technical solution: a high-temperature resistant and wear-resistant composite insulated cable, comprising a core unit 100, the core unit 100 including a PVC insulating sleeve 103, and a cable copper core 101 disposed inside the PVC insulating sleeve 103. The core unit 100 also includes a flexible core sheath 102 disposed outside the cable copper core 101, the flexible core sheath 102 being composed of insulating filler and insulating protective sleeve. The cable copper core 101 is formed by stranding or re-stranding of oxygen-free copper wires for cables, and the diameter of the copper wires ranges from 0.16 to 0.22 mm, specifically as follows. Figure 2 As shown, the core unit 100 also includes a tensile rope 104 disposed on the outside of the flexible core sheath 102, and the tensile rope 104 and the flexible core sheath 102 are interleaved inside the PVC insulation sleeve 103. The tensile rope 104 is made of insulation material that meets the regulations and is twisted together. The tensile rope 104 plays the role of improving the tensile strength of the core unit 100. PVC insulation particles 105 are filled between the PVC insulation sleeve 103 and the flexible core sheath 102.
[0025] Specific examples Figure 1 As shown, a conductor shielding layer 2 is provided on the outside of the conductor shielding layer 2, and an anti-corrosion layer 3 is provided on the outside of the conductor shielding layer 2. A heat insulation and flame retardant unit 400 is provided on the outside of the anti-corrosion layer 3, and a flexible outer sheath 5 is provided on the outside of the heat insulation and flame retardant unit 400. Figure 4 As shown, the heat insulation and flame retardant unit 400 includes a fire-resistant mica tape 401 disposed between the anti-corrosion layer 3 and the flexible outer sheath 5. A filamentous structure made of glass fiber is filled between the anti-corrosion layer 3 and the flexible outer sheath 5, and the filamentous structure is distributed on the outside of the fire-resistant mica tape 401. The glass fiber filling enhances the heat resistance of the composite insulated cable. The heat insulation and flame retardant unit 400 is evenly distributed between the anti-corrosion layer 3 and the flexible outer sheath 5. The heat insulation and flame retardant unit 400 also includes a heat-resistant rope 402 disposed inside the fire-resistant mica tape 401. The heat-resistant rope 402 is made of two strands of Kevlar fiber wrapped in a spiral. Kevlar fiber has the characteristics of high strength, good toughness, and high temperature resistance. The heat insulation and flame retardant unit 400 and the glass fiber filling between the anti-corrosion layer 3 and the flexible outer sheath 5 play a heat insulation role, making the heat resistance of the anti-corrosion layer 3 better and ensuring the flame retardant and heat insulation inside the cable.
[0026] Specific examples Figure 1 and Figure 3As shown, the outer surface of the flexible outer sheath 5 is provided with an adhesive layer 6, and an abrasion-resistant protection unit 700 is connected to the outer side of the adhesive layer 6. The abrasion-resistant protection unit 700 includes an abrasion-resistant nylon wrapping tape 701 disposed on the outer side of the adhesive layer 6. The abrasion-resistant nylon wrapping tape 701 is wrapped around the outer side of the adhesive layer 6 along the cable axis direction, and the abrasion-resistant nylon wrapping tape 701 is glued and fixed to the flexible outer sheath 5 through the adhesive layer 6. The abrasion-resistant protection unit 700 can be torn off from the outside of the flexible outer sheath 5. The abrasion-resistant protection unit 700 improves the abrasion-resistant protection effect of the flexible outer sheath 5. The outer surface of the abrasion-resistant nylon wrapping tape 701 is uniformly provided with raised nylon braided strips 702. The raised nylon braided strips 702 cause the nylon braided strips 702 to rub against the outer contact object first when friction occurs, reducing the wear on the flexible outer sheath 5.
[0027] The working principle of this utility model is as follows: When using this high-temperature resistant and wear-resistant composite insulated cable, firstly, a wear-resistant protection unit 700 is set on the outside of the flexible outer sheath 5. The wear-resistant nylon wrapping tape 701 and nylon braided strip 702 improve the wear-resistant protection effect of the flexible outer sheath 5. Furthermore, by protruding the nylon braided strip 702, when friction occurs, the nylon braided strip 702 first rubs against the outer contact object, reducing the wear on the flexible outer sheath 5.
[0028] Specific examples Figure 1 As shown, heat-insulating and flame-retardant units 400 are evenly distributed between the anti-corrosion layer 3 and the flexible outer sheath 5. The heat-resistant rope 402 is made of two strands of Kevlar fiber wrapped in a spiral. Kevlar fiber has the characteristics of high strength, good toughness and high temperature resistance. At the same time, glass fiber filaments are filled on the outside of the heat-insulating and flame-retardant units 400, which have good heat resistance. By setting the heat-insulating and flame-retardant units 400 between the anti-corrosion layer 3 and the flexible outer sheath 5, the heat resistance and heat insulation effect of the composite insulated cable can be effectively increased, thereby playing a role in heat insulation and flame retardancy inside the cable and preventing the inside of the composite insulated cable from burning.
[0029] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 high temperature resistant wear resistant composite insulated cable comprising a core unit (100), characterized in that: The wire core unit (100) comprises a PVC insulation sleeve (103), the inside of the PVC insulation sleeve (103) is provided with a cable copper core (101), the outside of the wire core unit (100) is provided with a conductor shielding layer (2), the outside of the conductor shielding layer (2) is provided with an anticorrosion layer (3), the outside of the anticorrosion layer (3) is provided with a heat insulation and fire resistance unit (400), and the outside of the heat insulation and fire resistance unit (400) is provided with a flexible outer sheath (5), the heat insulation and fire resistance unit (400) comprises a fireproof mica tape (401) arranged between the anticorrosion layer (3) and the flexible outer sheath (5). The outer surface of the flexible outer sheath (5) is provided with a viscose layer (6), and the outside of the viscose layer (6) is connected with a wear-resistant protection unit (700), the wear-resistant protection unit (700) comprises a wear-resistant nylon wrapping tape (701) arranged outside the viscose layer (6).
2. A high temperature resistant wear resistant composite insulated cable according to claim 1, characterized in that: The wire core unit (100) further comprises a flexible wire core sheath (102) arranged outside the cable copper core (101), and the flexible wire core sheath (102) is composed of an insulating filler and an insulating protective sleeve.
3. A high temperature resistant wear resistant composite insulated electrical cable according to claim 2, characterized in that: The cable copper core (101) is composed of cable special oxygen-free copper wire bundles or strands, and the copper wire diameter ranges from 0.16 to 0.22 mm.
4. A high temperature resistant wear resistant composite insulated cable according to claim 3, characterized in that: The wire core unit (100) further comprises a tensile rope (104) arranged outside the flexible wire core sheath (102), and PVC insulation particles (105) are arranged between the PVC insulation sleeve (103) and the flexible wire core sheath (102).
5. A high temperature resistant wear resistant composite insulated electrical cable according to claim 4, characterized in that: The tensile rope (104) and the flexible wire core sheath (102) are arranged in the inside of the PVC insulation sleeve (103) in a staggered manner and play a role in improving the tensile strength of the wire core unit (100).
6. The high temperature and wear resistant composite insulated cable of claim 1, wherein: The anticorrosion layer (3) and the flexible outer sheath (5) are filled with a filament structure composed of glass fibers, and the filament structure is distributed outside the fireproof mica tape (401).
7. The high temperature and wear resistant composite insulated cable of claim 1, wherein: The heat insulation and fire resistance unit (400) is uniformly distributed between the anticorrosion layer (3) and the flexible outer sheath (5), and the heat insulation and fire resistance unit (400) further comprises a heat-resistant rope (402) arranged inside the fireproof mica tape (401), the heat-resistant rope (402) is composed of two strands of Kevlar fiber tape wrapped in a spiral manner.
8. The high temperature and wear resistant composite insulated cable of claim 1, wherein: The wear-resistant nylon wrapping tape (701) is wrapped outside the viscose layer (6) along the cable axis direction, and the wear-resistant nylon wrapping tape (701) is fixedly attached to the flexible outer sheath (5) through the viscose layer (6), and the outer surface of the wear-resistant nylon wrapping tape (701) is uniformly provided with a convex nylon braided strip (702).