High-flame-retardant cable

Abstract

The utility model discloses a high flame-retardant cable, which comprises a flame-retardant sheath, an aluminum-plastic composite belt lining and a protection mechanism, the aluminum-plastic composite belt lining is arranged on the inner periphery of the flame-retardant sheath, and the protection mechanism is arranged inside the aluminum-plastic composite belt lining; the protection mechanism comprises an aramid fiber layer, silicone rubber, a reinforcing assembly, a TPU sleeve, a plurality of wire cores, an insulating sleeve and a filling layer. According to the scheme, the protection strength of components in the cable is greatly improved, and the service life of the wire cores and even the whole cable is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a high flame-retardant cable. Background Technology

[0002] A cable is an electrical or signal transmission device, typically consisting of several or groups of conductors (each group having at least two conductors). Each group of conductors is insulated from each other and is often twisted around a central conductor. The entire cable is covered with a highly insulating outer layer. Cables are characterized by being energized internally and insulated externally.

[0003] Existing cables are used in complex environments and are relatively fragile. They are easily damaged by external forces in outdoor environments, which can lead to excessive wear or short circuits and fires, significantly shortening the service life of the cables and posing a great safety hazard.

[0004] Therefore, a solution is needed. Utility Model Content

[0005] (I) Technical Problems to be Solved In view of the shortcomings of the prior art, this utility model provides a high flame retardant cable to solve the problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A high flame-retardant cable, characterized in that it includes a flame-retardant sheath, an aluminum-plastic composite tape liner, and a protective mechanism, wherein the aluminum-plastic composite tape liner is disposed within the inner circumference of the flame-retardant sheath, and the protective mechanism is disposed inside the aluminum-plastic composite tape liner.

[0008] The protective mechanism includes an aramid fiber layer, silicone rubber, a reinforcing component, a TPU sleeve, several wire cores, an insulating sleeve, and a filling layer. The aramid fiber layer is disposed within the inner circumference of the aluminum-plastic composite tape liner. The silicone rubber is disposed within the inner circumference of the aramid fiber layer. The reinforcing component is disposed inside the silicone rubber. The TPU sleeve is disposed inside the reinforcing component. Several wire cores are evenly disposed inside the TPU sleeve. The insulating sleeve is wrapped around each wire core. The filling layer is disposed between the TPU sleeve and the outer layer of each TPU sleeve.

[0009] Preferably, the reinforcing component includes a thermoplastic polyurethane (PUR) outer jacket, a thermoplastic polyurethane (PUR) inner jacket, a thermoplastic polyurethane (PUR) reinforcing layer, a thermoplastic polyurethane (PUR) support frame, and a plurality of core grooves. The thermoplastic polyurethane (PUR) outer jacket is disposed within the silicone rubber, the thermoplastic polyurethane (PUR) inner jacket is disposed inside the thermoplastic polyurethane (PUR) outer jacket, the thermoplastic polyurethane (PUR) reinforcing layer is uniformly disposed between the thermoplastic polyurethane (PUR) outer jacket and the thermoplastic polyurethane (PUR) inner jacket, the thermoplastic polyurethane (PUR) support frame is disposed in a cross-shaped structure inside the thermoplastic polyurethane (PUR) inner jacket, and the plurality of core grooves are disposed between the thermoplastic polyurethane (PUR) inner jacket and the thermoplastic polyurethane (PUR) support frame.

[0010] Preferably, the thermoplastic polyurethane (PUR) reinforcing layer has an X-shaped structure, the middle part of the thermoplastic polyurethane (PUR) frame has a circular structure, and the thermoplastic polyurethane (PUR) outer jacket, thermoplastic polyurethane (PUR) inner jacket, thermoplastic polyurethane (PUR) reinforcing layer, and thermoplastic polyurethane (PUR) frame are integrally formed.

[0011] Preferably, the core groove has a fan-shaped structure.

[0012] (III) Beneficial Effects This utility model provides a high flame-retardant cable. It has the following beneficial effects: 1. This solution is designed with reinforcing components. The wear resistance of thermoplastic polyurethane (PUR) is 8-10 times that of ordinary PVC. It can withstand millions of bends without cracking and is also very cold-resistant. Moreover, the thermoplastic polyurethane (PUR) outer jacket and the thermoplastic polyurethane (PUR) inner jacket are connected and reinforced by several X-shaped thermoplastic polyurethane (PUR) reinforcing layers, which greatly improves the protection strength of the internal components.

[0013] 2. Furthermore, silicone rubber has an elastic recovery rate of ≥95%, a wide temperature resistance range (-60℃~+200℃), making it suitable for frequent bending scenarios at high or low temperatures. It also exhibits excellent anti-aging properties, maintaining flexibility even after long-term use. The addition of an aramid fiber layer further enhances tensile strength. Both layers are located on the outer layer of the reinforcing component, providing excellent protection for the reinforcing component and its internal components, thus extending the service life of the reinforcing component. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the cable of this utility model;

[0015] Figure 2 This is a schematic diagram of the reinforcing component structure of this utility model.

[0016] In the diagram, 1-flame retardant sheath; 2-aluminum-plastic composite lining; 3-protective mechanism; 31-aramid fiber layer; 32-silicone rubber; 33-reinforcing component; 331-thermoplastic polyurethane (PUR) outer sheath; 332-thermoplastic polyurethane (PUR) inner sheath; 333-thermoplastic polyurethane (PUR) reinforcing layer; 334-thermoplastic polyurethane (PUR) frame; 335-several core channels; 34-TPU sheath; 35-several wire cores; 36-insulating sheath; 37-filling layer. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-2 The present invention provides a technical solution to achieve this: a high flame retardant cable, characterized in that it includes a flame retardant sheath 1, an aluminum-plastic composite tape liner 2, and a protective mechanism 3, wherein the aluminum-plastic composite tape liner 2 is disposed within the inner circumference of the flame retardant sheath 1, and the protective mechanism 3 is disposed inside the aluminum-plastic composite tape liner 2.

[0019] The core protective mechanism 3 includes an aramid fiber layer 31, silicone rubber 32, reinforcing components 33, a TPU sleeve 34, several wire cores 35, an insulating sleeve 36, and a filling layer 37. The aramid fiber layer 31 is disposed within the inner perimeter of the aluminum-plastic composite strip liner 2. The silicone rubber 32 is disposed within the inner perimeter of the aramid fiber layer 31. The reinforcing components 33 are disposed inside the silicone rubber 32. The TPU sleeve 34 is disposed inside the reinforcing components 33. Several wire cores 35 are evenly disposed inside the TPU sleeve 34. The insulating sleeve 36 is wrapped around each wire core 35. The filling layer 37 is disposed between the TPU sleeve 34 and the outer layer of each TPU sleeve 34.

[0020] Specifically, the reinforcing component 33 includes a thermoplastic polyurethane (PUR) outer jacket 331, a thermoplastic polyurethane (PUR) inner sleeve 332, a thermoplastic polyurethane (PUR) reinforcing layer 333, a thermoplastic polyurethane (PUR) support frame 334, and several core grooves 335. The thermoplastic polyurethane (PUR) outer jacket 331 is disposed within the silicone rubber 32. The thermoplastic polyurethane (PUR) inner sleeve 332 is disposed inside the thermoplastic polyurethane (PUR) outer jacket 331. The thermoplastic polyurethane (PUR) reinforcing layer 333 is evenly disposed between the thermoplastic polyurethane (PUR) outer jacket 331 and the thermoplastic polyurethane (PUR) inner sleeve 332. The thermoplastic polyurethane (PUR) support frame 334 is disposed in a cross structure inside the thermoplastic polyurethane (PUR) inner sleeve 332. Several core grooves 335 are disposed between the thermoplastic polyurethane (PUR) inner sleeve 332 and the thermoplastic polyurethane (PUR) support frame 334.

[0021] In detail, the thermoplastic polyurethane (PUR) reinforcing layer 333 has an X-shaped structure, the middle part of the thermoplastic polyurethane (PUR) frame 334 has a circular structure, the thermoplastic polyurethane (PUR) outer jacket 331, the thermoplastic polyurethane (PUR) inner jacket 332, the thermoplastic polyurethane (PUR) reinforcing layer 333 and the thermoplastic polyurethane (PUR) frame 334 are integrally formed, and the core groove 335 has a fan-shaped structure.

[0022] This design incorporates a reinforcing component 33. The thermoplastic polyurethane (PUR) has 8-10 times the abrasion resistance of ordinary PVC, capable of withstanding millions of bends without cracking, and is highly cold-resistant. Furthermore, the PUR outer jacket 331 and PUR inner jacket 332 are connected and reinforced by several X-shaped PUR reinforcing layers 333, significantly improving the protective strength of the internal components. In addition, the silicone rubber 32 has an elastic recovery rate of ≥95%, a wide temperature range (-60℃~+200℃), making it suitable for frequent bending scenarios at high or low temperatures, and exhibits excellent anti-aging properties, maintaining flexibility even after long-term use. The addition of an aramid fiber layer 31 further enhances tensile strength. Both layers are located on the outer layer of the reinforcing component 33, providing excellent protection for the reinforcing component 33 and its internal components, thus extending the service life of the reinforcing component 33.

[0023] Working principle: When the cable is subjected to external force, the flame-retardant sheath 1 and the aluminum-plastic composite inner lining 2 first reduce the force. After the force is relieved by the aramid fiber layer 31 and silicone rubber 32, the thermoplastic polyurethane (PUR) outer jacket 331 is compressed by the thermoplastic polyurethane (PUR) reinforcing layer 333. During the compression process, the thermoplastic polyurethane (PUR) outer jacket 331 transmits the force to the thermoplastic polyurethane (PUR) inner sheath 332 through the X-shaped outer ends of each thermoplastic polyurethane (PUR) reinforcing layer 333. This structure can dilute most of the force and significantly reduce damage to internal components. Finally, the weak force is greatly reduced through the transmission of the thermoplastic polyurethane (PUR) frame, thus avoiding damage to the wire core.

[0024] This utility model comprises: 1-flame-retardant sheath; 2-aluminum-plastic composite inner lining; 3-protective mechanism; 31-aramid fiber layer; 32-silicone rubber; 33-reinforcing component; 331-thermoplastic polyurethane (PUR) outer sheath; 332-thermoplastic polyurethane (PUR) inner sheath; 333-thermoplastic polyurethane (PUR) reinforcing layer; 334-thermoplastic polyurethane (PUR) frame; 335-several core slots; 34-TPU sleeve; 35-several wire cores; 36-insulating sleeve; 37-filling layer. These components are all general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that existing cables operate in complex environments and are relatively fragile. In outdoor environments, they are easily damaged by external forces, leading to excessive wear or short circuits and fires, significantly shortening the cable's service life and posing significant safety hazards. This utility model significantly improves the protection strength of the cable's internal components and extends the service life of the wire cores and even the entire cable.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high flame-retardant cable, characterized in that: It includes a flame-retardant sheath (1), an aluminum-plastic composite strip liner (2), and a protective mechanism (3). The aluminum-plastic composite strip liner (2) is disposed within the inner circumference of the flame-retardant sheath (1), and the protective mechanism (3) is disposed inside the aluminum-plastic composite strip liner (2). The protective mechanism (3) includes an aramid fiber layer (31), silicone rubber (32), a reinforcing component (33), a TPU sleeve (34), several wire cores (35), an insulating sleeve (36), and a filling layer (37). The aramid fiber layer (31) is disposed within the inner circumference of the aluminum-plastic composite tape liner (2). The silicone rubber (32) is disposed within the inner circumference of the aramid fiber layer (31). The reinforcing component (33) is disposed inside the silicone rubber (32). The TPU sleeve (34) is disposed inside the reinforcing component (33). Several wire cores (35) are evenly disposed inside the TPU sleeve (34). The insulating sleeve (36) is wrapped around each wire core (35). The filling layer (37) is disposed between the TPU sleeve (34) and the outer layer of each TPU sleeve (34).

2. The high flame-retardant cable according to claim 1, characterized in that: The reinforcing component (33) includes a thermoplastic polyurethane (PUR) outer jacket (331), a thermoplastic polyurethane (PUR) inner sleeve (332), a thermoplastic polyurethane (PUR) reinforcing layer (333), a thermoplastic polyurethane (PUR) frame (334), and a plurality of core grooves (335). The thermoplastic polyurethane (PUR) outer jacket (331) is disposed within the inner circumference of the silicone rubber (32). The thermoplastic polyurethane (PUR) inner sleeve (332) is disposed inside the thermoplastic polyurethane (PUR) outer jacket (331). The thermoplastic polyurethane (PUR) reinforcing layer (333) is uniformly disposed between the thermoplastic polyurethane (PUR) outer jacket (331) and the thermoplastic polyurethane (PUR) inner sleeve (332). The thermoplastic polyurethane (PUR) frame (334) is disposed in a cross structure inside the thermoplastic polyurethane (PUR) inner sleeve (332). A plurality of core grooves (335) are disposed between the thermoplastic polyurethane (PUR) inner sleeve (332) and the thermoplastic polyurethane (PUR) frame (334).

3. The high flame-retardant cable according to claim 2, characterized in that: The thermoplastic polyurethane PUR reinforcing layer (333) has an X-shaped structure, and the middle part of the thermoplastic polyurethane PUR frame (334) has a circular structure. The thermoplastic polyurethane PUR outer jacket (331), thermoplastic polyurethane PUR inner jacket (332), thermoplastic polyurethane PUR reinforcing layer (333) and thermoplastic polyurethane PUR frame (334) are integrally formed.

4. A high flame-retardant cable according to claim 3, characterized in that: The core groove (335) has a fan-shaped structure.

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