Fire resistant, non-combustible thin wall locomotive cable

Abstract

The utility model discloses a kind of fire-resistant non-combustible thin-wall locomotive cable, it is related to thin-wall locomotive cable technical field, including cable core, buffer assembly and flame-retardant isolation layer, buffer assembly is arranged between the cable core, the outside of cable core is provided with inner sheath, and the gap between cable core, buffer assembly and inner sheath is filled with extruded ceramic silicone rubber, the outside of inner sheath is provided with shielding layer, and the outside of shielding layer is provided with aluminium plastic composite tape wrapping, the outside of aluminium plastic composite tape wrapping is provided with flame-retardant isolation layer.The fire-resistant non-combustible thin-wall locomotive cable, the flame-retardant glass cloth and fire-resistant mica tape layer of flame-retardant isolation layer can form double-layer flame-retardant structure, and the effect of flame-retardant is better, the outer sheath of outside adopts flame-retardant poly PEEK material, with high strength, high heat resistance, high chemical resistance, the flame-retardant coating on surface can form fire-retardant isolation protective layer, comprehensively make thin-wall locomotive cable have good fire-resistant non-combustible effect.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled locomotive cable technology, specifically a fire-resistant, non-combustible thin-walled locomotive cable. Background Technology

[0002] A cable is a power or signal transmission device made of multiple insulated conductors twisted together, mainly used in fields such as power and communication; cables for internal connections in thin-walled locomotives are mainly designed for environments with dense pipes, narrow spaces, and the need for oil resistance and high temperature resistance. Their core characteristics include small outer diameter, high flexibility, and safety performance.

[0003] For example, the utility model disclosed in CN221486177U is a lightweight, oil-resistant, thin-walled, insulated fireproof cable for high-altitude trains. This cable features a small outer diameter, light weight, resistance to high and low temperatures, resistance to fuel oil and animal oil, and strong resistance to electromagnetic interference. The product has high insulation concentricity, achieving thin insulation extrusion, and meets the fireproof, low-smoke, halogen-free, environmentally friendly, and flame-retardant requirements of high-speed rail, bullet trains, or urban rail transit under special conditions. It also realizes the lightweighting and localization of this series of locomotive cables, completely overcoming the inability of traditional cables to simultaneously meet all performance requirements, and has promotion and application value. However, its flame-retardant effect is relatively average, and it does not have a multi-layer flame-retardant structure, making it still susceptible to flame damage when exposed to open flames. Utility Model Content

[0004] The purpose of this invention is to provide a fire-resistant, non-combustible, thin-walled locomotive cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire-resistant, non-combustible, thin-walled locomotive cable, comprising a cable core, a buffer assembly, and a flame-retardant insulating layer. A buffer assembly is provided between the cable cores, and the buffer assembly includes a connecting rubber plate and a buffer rubber plate. The connecting rubber plate has a "Y"-shaped structure, and a buffer rubber plate is fixed to the outside of the connecting rubber plate. An inner sheath is provided on the outside of the cable core, and the gap between the cable core, the buffer assembly, and the inner sheath is filled with extruded ceramicized silicone rubber. A shielding layer is provided on the outside of the inner sheath, and an aluminum-plastic composite tape is wrapped around the outside of the shielding layer. A flame-retardant insulating layer is provided on the outside of the aluminum-plastic composite tape wrapping, and the flame-retardant insulating layer includes flame-retardant glass cloth and a fire-resistant mica tape layer. A fire-resistant mica tape layer is provided on the outside of the flame-retardant glass cloth.

[0006] Furthermore, the cable core includes a conductor, an insulation layer, and a double-layer copper wire metal shielding mesh. The conductor is provided with an insulation layer on its outer side, and the insulation layer is provided with a double-layer copper wire metal shielding mesh on its outer side. Specifically, the insulation layer is a ceramicized polyolefin insulation material layer.

[0007] Furthermore, there are three cable cores in total, and three connecting rubber plates are distributed in an array.

[0008] Furthermore, the three connecting rubber plates are an integrated structure, and the buffer rubber plate on the outside of the connecting rubber plates is an arc-shaped structure.

[0009] Furthermore, the inner sheath and shielding layer are concentric circular structures, and the shielding layer is specifically a double-layer shielding structure of tin-plated copper wire braid and aluminum-plastic composite tape.

[0010] Furthermore, a metal armor layer is provided on the outside of the flame-retardant isolation layer, and the metal armor layer is specifically a self-locking metal armor layer.

[0011] Furthermore, an outer sheath is provided on the outside of the metal armor layer, and the outer surface of the outer sheath is coated with a flame-retardant coating.

[0012] This utility model provides a fire-resistant, non-combustible, thin-walled locomotive cable with the following advantages: This utility model is equipped with a buffer component. The double-layer copper wire metal shielding mesh on the outside of the cable core facilitates the improvement of its structural strength and tensile performance. The three cable cores can be distributed between the connecting rubber plates during installation, making it difficult for the cable core positions to shift. The arc-shaped buffer rubber plate is attached to the inner wall of the buffer rubber plate. The Y-shaped connecting rubber plate is connected to the buffer rubber plate to buffer pressure. The extruded ceramicized silicone rubber filled in the gaps between the cable core, the buffer component and the inner sheath has good flexibility and insulation properties. When exposed to flame, it can quickly form a self-supporting ceramic body, with good thermal shock resistance and electrical properties, which can effectively prevent the spread of flames and further improve the fire resistance of the cable.

[0013] This utility model features a flame-retardant isolation layer. The shielding layer is specifically a double-layer shielding structure consisting of tin-plated copper wire braid and aluminum-plastic composite tape, which effectively shields against external electromagnetic interference and ensures the stability of cable transmission. The aluminum-plastic composite tape wrapping around the outside of the shielding layer further enhances the shielding effect. The flame-retardant glass cloth and fire-resistant mica tape layer of the flame-retardant isolation layer form a double-layer flame-retardant structure with excellent flame-retardant effect. The metal armor layer helps resist external impacts and improves the cable's compressive and tensile strength. The outer sheath is made of flame-retardant polyPEEK material, which has high strength, high heat resistance, and high chemical resistance. The flame-retardant coating on the surface forms a fire-retardant isolation protective layer. Overall, this gives the thin-walled locomotive cable excellent fire resistance and non-combustible properties. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a fire-resistant, non-combustible, thin-walled locomotive cable according to the present invention. Figure 2 This is a schematic diagram of the core structure of a fire-resistant, non-combustible, thin-walled locomotive cable according to the present invention. Figure 3This is a schematic diagram of the buffer assembly structure of a fire-resistant, non-combustible, thin-walled locomotive cable according to the present invention. Figure 4 This is a schematic diagram of the flame-retardant insulation layer structure of a fire-resistant, non-combustible, thin-walled locomotive cable according to this utility model.

[0015] In the diagram: 1. Cable core; 101. Conductor; 102. Insulation layer; 103. Double-layer copper wire metal shielding mesh; 2. Buffer assembly; 201. Connecting rubber plate; 202. Buffer rubber plate; 3. Inner sheath; 4. Extruded ceramicized silicone rubber; 5. Shielding layer; 6. Aluminum-plastic composite tape wrapping; 7. Flame-retardant isolation layer; 701. Flame-retardant glass cloth; 702. Fire-resistant mica tape layer; 8. Metal armor layer; 9. Outer sheath; 10. Flame-retardant coating. Detailed Implementation

[0016] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0017] like Figures 1-3 As shown, a fire-resistant, non-combustible, thin-walled locomotive cable includes a cable core 1, a buffer assembly 2, and a flame-retardant insulating layer 7. The cable core 1 includes a conductor 101, an insulation layer 102, and a double-layer copper wire metal shielding mesh 103. The insulation layer 102 is disposed on the outside of the conductor 101, and the double-layer copper wire metal shielding mesh 103 is disposed on the outside of the insulation layer 102. The insulation layer 102 is specifically a ceramicized polyolefin insulation material layer. A buffer assembly 2 is disposed between the cable cores 1, and the buffer assembly 2 includes a connecting rubber plate 201 and a buffer rubber plate 202. The connecting rubber plate 201 has a "Y" shaped structure, and the buffer rubber plate 202 is fixed on the outside of the connecting rubber plate 201. There are three cable cores 1, and the three connecting rubber plates 201 are distributed in an array. The three connecting rubber plates 201 are an integrated structure, and the buffer rubber plate 202 on the outside of the connecting rubber plate 201 has an arc-shaped structure. An inner sheath 3 is provided on the outside of the cable core 1, and the gap between the cable core 1, the buffer component 2 and the inner sheath 3 is filled with extruded ceramicized silicone rubber 4. The double-layer copper wire metal shielding mesh 103 on the outside of the cable core 1 helps to improve its structural strength and tensile performance. When the three cable cores 1 are laid out, they can be distributed between the connecting rubber plates 201, so that the position of the cable core 1 is not easily shifted. The arc-shaped buffer rubber plate 202 is attached to the inner wall of the buffer rubber plate 202. The connecting rubber plate 201 with the Y-shaped structure is connected to the buffer rubber plate 202 to buffer the pressure. The extruded ceramicized silicone rubber 4 filled in the gap between the cable core 1, the buffer component 2 and the inner sheath 3 has good flexibility and insulation performance. When it encounters flame, it can quickly form a self-supporting ceramic body. It has good thermal shock resistance and electrical performance, and can effectively prevent the spread of flame, further improving the fire resistance of the cable.

[0018] like Figure 1 and Figure 4 As shown, a shielding layer 5 is provided on the outer side of the inner sheath 3, and an aluminum-plastic composite tape wrapping 6 is provided on the outer side of the shielding layer 5. The inner sheath 3 and the shielding layer 5 are concentric circular structures, and the shielding layer 5 is specifically a double-layer shielding structure of tin-plated copper wire braid and aluminum-plastic composite tape. A flame-retardant isolation layer 7 is provided on the outer side of the aluminum-plastic composite tape wrapping 6, and the flame-retardant isolation layer 7 includes a flame-retardant glass cloth 701 and a fire-resistant mica tape layer 702. The fire-resistant mica tape layer 702 is provided on the outer side of the flame-retardant glass cloth 701. A metal armor layer 8 is provided on the outer side of the flame-retardant isolation layer 7, and the metal armor layer 8 is specifically a self-locking metal armor layer. An outer sheath 9 is provided on the outer side of the metal armor layer 8, and the outer surface of the outer sheath 9 is coated with a flame-retardant coating 10. The shielding layer 5 is a double-layer shielding structure consisting of tin-plated copper wire braid and aluminum-plastic composite tape, which can effectively shield external electromagnetic interference and ensure the stability of cable transmission. The aluminum-plastic composite tape wrapping 6 is located on the outside of the shielding layer 5, further enhancing the shielding effect. The flame-retardant isolation layer 7, consisting of flame-retardant glass cloth 701 and fire-resistant mica tape layer 702, can form a double-layer flame-retardant structure with good flame-retardant effect. The metal armor layer 8 is easy to resist external impact and improves the cable's compressive and tensile strength. The outer sheath 9 is made of flame-retardant polyPEEK material, which has high strength, high heat resistance, and high chemical resistance. The flame-retardant coating 10 on the surface can form a fire-retardant isolation protective layer. All these factors combined give the thin-walled locomotive cable a good fire-resistant and non-combustible effect.

[0019] In summary, as Figures 1-4 As shown, in the fire-resistant, non-combustible, thin-walled locomotive cable, when in use, the three cable cores 1 are distributed between the connecting rubber plates 201 during installation, making it difficult for the cable cores 1 to shift. The arc-shaped buffer rubber plate 202 is attached to the inner wall of the buffer rubber plate 202. The connecting rubber plate 201 with the Y-shaped structure is connected to the buffer rubber plate 202 to buffer pressure. The double-layer copper wire metal shielding mesh 103 on the outside of the cable core 1 can improve its structural strength and tensile performance. The shielding layer 5 is specifically a double-layer shielding structure of tin-plated copper wire braid and aluminum-plastic composite tape, which can effectively shield external electromagnetic interference and ensure the stability of cable transmission. The aluminum-plastic composite tape wrapping 6 is located on the outside of the shielding layer 5 to further enhance the shielding effect, while the metal armor layer 8 can resist external impact and improve the cable's compressive and tensile performance. During use, the extruded ceramicized silicone rubber 4 filling the gaps between the cable core 1, the buffer assembly 2, and the inner sheath 3 has good flexibility and insulation properties. When exposed to flames, it can quickly form a self-supporting ceramic body, exhibiting good thermal shock resistance and electrical properties, effectively preventing the spread of flames and further improving the fire resistance of the cable. Then, the flame-retardant glass cloth 701 and the fire-resistant mica tape layer 702 of the flame-retardant isolation layer 7 can form a double-layer flame-retardant structure with excellent flame-retardant effect. The outer sheath 9 is made of flame-retardant polyPEEK material, which has high strength, high heat resistance, and high chemical resistance. Furthermore, the flame-retardant coating 10 on the surface can form a fire-retardant isolation protective layer. All these factors combined give the thin-walled locomotive cable a good fire-resistant and non-combustible effect, thus completing the use process of this fire-resistant and non-combustible thin-walled locomotive cable.

[0020] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A fire-resistant, non-combustible, thin-walled locomotive cable, comprising a cable core (1), a buffer assembly (2), and a flame-retardant insulating layer (7), characterized in that, A buffer assembly (2) is provided between the cable cores (1), and the buffer assembly (2) includes a connecting rubber plate (201) and a buffer rubber plate (202). The connecting rubber plate (201) has a "Y" shaped structure, and a buffer rubber plate (202) is fixed on the outside of the connecting rubber plate (201). An inner sheath (3) is provided on the outside of the cable core (1), and the gap between the cable core (1), the buffer assembly (2) and the inner sheath (3) is filled with extruded ceramicized silicone rubber (4). A shielding layer (5) is provided on the outside of the inner sheath (3), and an aluminum-plastic composite tape wrapping (6) is provided on the outside of the shielding layer (5). A flame-retardant isolation layer (7) is provided on the outside of the aluminum-plastic composite tape wrapping (6), and the flame-retardant isolation layer (7) includes a flame-retardant glass cloth (701) and a fire-resistant mica tape layer (702). A fire-resistant mica tape layer (702) is provided on the outside of the flame-retardant glass cloth (701).

2. The fire-resistant, non-combustible, thin-walled locomotive cable according to claim 1, characterized in that, The cable core (1) includes a conductor (101), an insulation layer (102) and a double-layer copper wire metal shielding mesh (103). The conductor (101) is provided with an insulation layer (102) on the outside, and the insulation layer (102) is provided with a double-layer copper wire metal shielding mesh (103) on the outside. The insulation layer (102) is specifically a ceramicized polyolefin insulation material layer.

3. The fire-resistant, non-combustible, thin-walled locomotive cable according to claim 2, characterized in that, There are three cable cores (1), and three connecting rubber plates (201) are arranged in an array.

4. The fire-resistant, non-combustible, thin-walled locomotive cable according to claim 3, characterized in that, The three connecting rubber plates (201) are an integrated structure, and the buffer rubber plate (202) on the outside of the connecting rubber plate (201) is an arc-shaped structure.

5. The fire-resistant, non-combustible, thin-walled locomotive cable according to claim 1, characterized in that, The inner sheath (3) and the shielding layer (5) are concentric circular structures, and the shielding layer (5) is specifically a double-layer shielding structure of tin-plated copper wire braid and aluminum-plastic composite tape.

6. The fire-resistant, non-combustible, thin-walled locomotive cable according to claim 1, characterized in that, The flame-retardant isolation layer (7) is provided with a metal armor layer (8) on the outside, and the metal armor layer (8) is specifically a self-locking metal armor layer.

7. A fire-resistant, non-combustible, thin-walled locomotive cable according to claim 6, characterized in that, The outer side of the metal armor layer (8) is provided with an outer sheath (9), and the outer surface of the outer sheath (9) is coated with a flame-retardant coating (10).

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