Halogen-free low-smoke flame-retardant optical fiber composite armored cable

Abstract

The utility model provides a kind of halogen-free low smoke flame-retardant optical fiber composite armored cable, belong to wire and cable technical field, including cladding shell, the inner shell of being arranged in the inner chamber of cladding shell, the armored assembly of being arranged in the surface of inner shell, and the flame-retardant assembly of being arranged in the inner wall of armored assembly.The utility model is set by multilayer composite structure, the promotion of mechanical protection performance and fire safety performance is realized, the double-shell structure cooperation armored assembly cable support system of cladding shell and inner shell, the compression resistance, tensile resistance and impact resistance of cable are greatly enhanced, effectively solve the problem that traditional cable is easily damaged in complex laying environment, the multilayer composite setting of flame-retardant assembly, including the excellent heat insulation smoke suppression performance of aluminium hydroxide composite flame-retardant layer, the high temperature resistance flexibility of flame-retardant silicone rubber support layer and the structural stability of glass fiber filling layer, so that cable can effectively prevent flame spread and maximum reduce toxic smoke generation under fire condition.

Description

Technical Field

[0001] This utility model belongs to the field of wire and cable technology, specifically relating to a halogen-free, low-smoke, flame-retardant optical fiber composite armored cable. Background Technology

[0002] Armored cables, as a type of cable with a metallic protective layer, have a technological background that can be traced back to the early 20th century. With the growth in demand for power transmission and communication, they were developed to address the problems of ordinary cables being susceptible to mechanical damage and electromagnetic interference. In its development process, they have evolved from the initial lead-sheathed cables to modern armored cables using a variety of materials such as steel tape and steel wire, with continuous technological upgrades to adapt to complex environments. Today, their applications cover a wide range of demanding conditions, including power transmission, petrochemicals, rail transportation, mining, and the military, making them an indispensable key component in modern infrastructure.

[0003] Although traditional armored cables perform well in terms of mechanical protection and electromagnetic shielding, they still have significant shortcomings in fire safety and environmental performance: conventional flame-retardant cables mostly use halogenated flame retardants, which can delay the spread of flames, but produce a large amount of toxic fumes and corrosive gases when burning, seriously threatening personnel escape and equipment safety. Utility Model Content

[0004] The purpose of this invention is to provide a halogen-free, low-smoke, flame-retardant optical fiber composite armored cable, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A halogen-free, low-smoke, flame-retardant optical fiber composite armored cable, comprising,

[0007] The enclosure shell, the inner shell disposed within the cavity of the enclosure shell, the armor assembly disposed on the surface of the inner shell, and the flame-retardant assembly disposed on the inner wall of the armor assembly.

[0008] As a preferred embodiment of the present invention, the armor assembly includes a support block fixedly connected to the inner wall of the cover shell, and a steel cable fixedly connected to the inner wall of the support block.

[0009] As a preferred embodiment of this utility model, the flame-retardant component includes a flame-retardant layer fixedly connected to the inner surface of the inner shell, and a support layer fixedly connected to the surface of the flame-retardant layer.

[0010] As a preferred embodiment of the present invention, the flame-retardant layer further includes a filling layer fixedly connected to the surface of the support layer, and a cable component disposed in the cavity of the filling layer.

[0011] In a preferred embodiment of the present invention, the cable component includes a connecting layer coated on the inner surface of the filling layer, a reinforcing layer adhered to the surface of the connecting layer, and a conductor movably connected to the inner wall of the reinforcing layer.

[0012] As a preferred embodiment of this utility model, the flame retardant is made by mixing hot melt silicone with aluminum hydroxide and cooling, the support layer is made of flame retardant silicone rubber material, and the filling layer is made of glass fiber material.

[0013] In a preferred embodiment of this utility model, the connecting layer is made of polyurethane flame-retardant adhesive, the reinforcing layer is made of nylon braid, and the conductor is made of copper.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through a multi-layered composite structure, it enhances both mechanical protection and fire safety performance. The double-shell structure of the outer shell and inner shell, combined with the steel cable support system of the armored components, significantly strengthens the cable's resistance to pressure, tension, and impact, effectively solving the problem of traditional cables being easily damaged in complex laying environments. The multi-layered composite design of the flame-retardant components, including the excellent heat insulation and smoke suppression performance of the aluminum hydroxide composite flame-retardant layer, the high-temperature flexibility of the flame-retardant silicone rubber support layer, and the structural stability of the glass fiber filling layer, enables the cable to effectively prevent the spread of flames and minimize the generation of toxic fumes in the event of a fire, fully meeting the environmental protection requirements of modern engineering for halogen-free and low-smoke cables. The internal use of high-conductivity copper core wires combined with a nylon reinforcing layer and polyurethane flame-retardant adhesive technology ensures stable transmission performance while improving the overall structural durability. It is particularly suitable for high-safety applications such as rail transit and intelligent buildings, possessing significant market competitive advantages and promotional application value. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the armor assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the flame-retardant component of this utility model;

[0019] Figure 4This is a schematic diagram of the cable component of this utility model.

[0020] In the diagram: 101, outer shell; 102, inner shell; 103, armor assembly; 103a, support block; 103b, steel cable; 104, flame-retardant assembly; 104a, flame-retardant layer; 104b, support layer; 104c, filler layer; 104d, cable component; 104d-1, connection layer; 104d-2, reinforcing layer; 104d-3, conductor. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] 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. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figures 1-4 This is an embodiment of the present invention, which provides a halogen-free, low-smoke, flame-retardant optical fiber composite armored cable, comprising:

[0026] The enclosure 101, the inner shell 102 disposed in the inner cavity of the enclosure 101, the armor assembly 103 disposed on the surface of the inner shell 102, and the flame-retardant assembly 104 disposed on the inner wall of the armor assembly 103.

[0027] Specifically, the armor assembly 103 includes a support block 103a fixedly connected to the inner wall of the cover shell 101, and a steel cable 103b fixedly connected to the inner wall of the support block 103a.

[0028] Furthermore, the flame-retardant component 104 includes a flame-retardant layer 104a fixedly connected to the inner surface of the inner shell 102, and a support layer 104b fixedly connected to the surface of the flame-retardant layer 104a. The flame-retardant component 104 also includes a filling layer 104c fixedly connected to the surface of the support layer 104b, and a cable component 104d disposed in the cavity of the filling layer 104c.

[0029] Preferably, the flame retardant is made by mixing hot melt silicone with aluminum hydroxide and cooling, the support layer 104b is made of flame retardant silicone rubber material, and the filler layer 104c is made of glass fiber material.

[0030] It should be noted that the connecting layer 104d-1 is made of polyurethane flame-retardant adhesive, the reinforcing layer 104d-2 is made of nylon braid, and the conductor 104d-3 is made of copper.

[0031] In use, the outer shell 101 and inner shell 102, together with the support block 103a and steel cable 103b in the armor assembly 103, can effectively resist external mechanical impact and pressure, protecting the internal cable component 104d from damage. The flame-retardant layer 104a in the flame-retardant assembly 104 uses hot-melt silicone mixed with aluminum hydroxide material, which can form a heat insulation barrier in high-temperature environments, inhibiting the spread of flames and reducing smoke generation. The flame-retardant silicone rubber material of the support layer 104b enhances the flexibility and fire resistance of the cable. The glass fiber material of the filling layer 104c not only plays the role of insulation and fixing the internal structure, but also maintains the structural integrity in the event of a fire. The conductor 104d-3 inside the cable achieves efficient conductivity through copper material, while the nylon braided material of the reinforcing layer 104d-2 and the polyurethane flame-retardant adhesive of the connecting layer 104d-1 ensure the tightness and durability of the overall cable structure.

[0032] In summary, the double-layer protective structure of the outer shell 101 and inner shell 102, combined with the steel cable 103b and support block 103a of the armor assembly 103, significantly improves the cable's resistance to pressure and impact, making it suitable for complex and harsh laying environments. The multi-layered arrangement of the flame-retardant assembly 104, including the heat insulation and smoke suppression of the flame-retardant layer 104a, the flexibility and high-temperature resistance of the support layer 104b, and the structural stability of the filling layer 104c, ensures that the cable can maintain its function and reduce the release of toxic fumes in the event of a fire, meeting environmental and safety requirements. The highly conductive copper material of the internal conductor and the nylon braided structure of the reinforcing layer 104d-2, combined with the bonding effect of polyurethane flame-retardant adhesive, not only ensure the efficient and stable transmission of signals and power, but also enhance the mechanical strength and durability of the overall structure. Ultimately, this achieves comprehensive optimization of the cable in terms of mechanical protection, fire safety, electrical performance, and environmental adaptability, making it particularly suitable for scenarios with high safety and reliability requirements, such as rail transit, intelligent buildings, and industrial facilities.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A halogen-free, low-smoke, flame-retardant optical fiber composite armored cable, characterized in that: include, The enclosure (101), the inner shell (102) disposed in the inner cavity of the enclosure (101), the armor assembly (103) disposed on the surface of the inner shell (102), and the flame-retardant assembly (104) disposed on the inner wall of the armor assembly (103).

2. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 1, characterized in that: The armor assembly (103) includes a support block (103a) fixedly connected to the inner wall of the cover shell (101), and a steel cable (103b) fixedly connected to the inner wall of the support block (103a).

3. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 2, characterized in that: The flame-retardant component (104) includes a flame-retardant layer (104a) fixedly connected to the inner surface of the inner shell (102), and a support layer (104b) fixedly connected to the surface of the flame-retardant layer (104a).

4. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 3, characterized in that: The flame-retardant layer (104a) also includes a filling layer (104c) fixedly connected to the surface of the support layer (104b), and a cable component (104d) disposed in the cavity of the filling layer (104c).

5. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 4, characterized in that: The cable component (104d) includes a connecting layer (104d-1) coated on the inner surface of the filling layer (104c), a reinforcing layer (104d-2) bonded to the surface of the connecting layer (104d-1), and a conductor (104d-3) movably connected to the inner wall of the reinforcing layer (104d-2).

6. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 5, characterized in that: The flame retardant is made by mixing hot melt silicone with aluminum hydroxide and cooling, the support layer (104b) is made of flame retardant silicone rubber material, and the filler layer (104c) is made of glass fiber material.

7. The halogen-free, low-smoke, flame-retardant optical fiber composite armored cable according to claim 6, characterized in that: The connecting layer (104d-1) is made of polyurethane flame-retardant adhesive material, the reinforcing layer (104d-2) is made of nylon braided material, and the conductor (104d-3) is made of copper material.

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