Fireproof high-temperature-resistant cable

Abstract

The utility model belongs to the technical field of cables, in particular to a fireproof high-temperature-resistant cable, which comprises a cable body, the cable body comprises a wire core, and an inner insulating layer is wrapped outside the cable body; the flexible filling layer is wrapped on the wire core, and a mounting hole for mounting the wire core is formed in the flexible filling layer; an outer insulating layer, wherein the flexible filling layer is wrapped with the outer insulating layer; the fireproof braid layer is wrapped on the outer insulating layer; according to the utility model, different wire cores are isolated from each other through the flexible filling layer, mutual influence among the wire cores is avoided, the safety is improved, the fireproof performance of the cable body and the structural form of the fireproof braid layer are enhanced through the fireproof braid layer, so that external flames are not easy to influence the wire cores at the inner side, the safety is further improved, and the service life of the cable is prolonged. The device is also suitable for occasions where a plurality of cables are laid in groups.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a fireproof and high temperature resistant cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, usually consisting of several or several groups of wires. The cable has the characteristics of being powered inside and insulated outside.

[0003] At present, because the cores inside the cable are closely distributed and fit closely to each other, when a group of cores has safety problems, the remaining cores are interfered with each other, and the fire safety and other performance are insufficient, which has certain limitations in use.

[0004] Based on the above technical problems, it was retrieved that in the prior art, a Chinese utility model patent with authorization announcement number CN220324216U disclosed "a fireproof aluminum alloy cable", including a cable, an aluminum alloy core is arranged inside the cable, an inner insulating layer is wrapped on the outside of the aluminum alloy core, an anti-static layer is connected to the outside of the inner insulating layer, a supporting column and a reinforcing layer are respectively arranged inside the cable, the reinforcing layer is located on the outside of the supporting column, the outside of the supporting column is connected to the anti-static layer, a partition plate is connected to the outside of the supporting column, rubber pads are connected on both sides of the partition plate, the outside of the rubber pad is connected to the anti-static layer, one end of the partition plate is connected to the reinforcing layer, and an outer insulating layer is arranged on the outside of the reinforcing layer to avoid damage in the event of an accidental fire and enhance safety.

[0005] Although the fireproof cables in the prior art, including those mentioned above, have certain flame retardant and fireproof effects, they are not suitable for group laying. When multiple cables are laid in a group, once the cables catch fire, the cables supply combustible materials to each other, causing high temperatures over a large area, causing the cables to spread and not extinguish themselves, which has great limitations on use.

[0006] In order to solve the above problems, the present application proposes a fireproof and high temperature resistant cable. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a fireproof and high temperature resistant cable, which has the characteristics of easy use and high safety performance.

[0008] To achieve the above object, the utility model provides the following technical solution: a fireproof and high temperature resistant cable, comprising a cable body, wherein the cable body comprises:

[0009] A wire core, which is wrapped with an inner insulating layer on the outside of the cable body;

[0010] A flexible filling layer, wherein the flexible filling layer is wrapped on the wire core and has a mounting hole for mounting the wire core;

[0011] An outer insulating layer, the outer insulating layer being wrapped on the flexible filling layer;

[0012] A fireproof braided layer is wrapped around the outer insulating layer.

[0013] As a preferred technical solution of the utility model, the outer insulating layer is one of polystyrene foam, polypropylene mesh belt, low-smoke halogen-free flame-retardant rope, glass fiber rope or hemp rope.

[0014] As a preferred technical solution of the utility model, the fireproof braided layer is one of glass fiber braided fabric, asbestos fiber braided fabric, ceramic fiber braided fabric or polyester fiber braided fabric.

[0015] As a preferred technical solution of the utility model, the fireproof braided layer includes weft fiber yarns and warp fiber yarns, and the weft fiber yarns and the warp fiber yarns are interlaced and woven to form the fireproof braided layer.

[0016] As a preferred technical solution of the utility model, the weft fiber yarn includes a first fiber yarn, a second fiber yarn and a metal wire, and the first fiber yarn, the second fiber yarn and the metal wire are twisted into a spiral weft fiber yarn.

[0017] As a preferred technical solution of the utility model, the metal wire is tungsten wire or stainless steel wire.

[0018] As a preferred technical solution of the utility model, the pore size of the fireproof braided layer is 0.03mm-0.07mm.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] In the utility model, different wire cores are isolated from each other by the provision of a flexible filling layer, so as to avoid mutual influence between the wire cores and improve safety. The fireproof performance of the cable body is enhanced by the provision of a fireproof braided layer. The structural form of the fireproof braided layer makes it difficult for external flames to affect the wire cores inside, thereby further improving safety. The utility model is also applicable to occasions where multiple cables are laid in groups.

[0021] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the unfolded structure of the fireproof braided layer in the utility model;

[0025] Figure 3 It is a schematic diagram of the axonometric structure of the weft fiber yarn in the utility model.

[0026] In the figure: 1, cable body; 11, core; 111, inner insulation layer; 12, flexible filling layer; 121, mounting hole; 13, outer insulation layer; 14, fireproof braided layer; 141, weft fiber filament; 1411, first fiber filament; 1412, second fiber filament; 1413, metal wire; 142, warp fiber filament. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 3 The utility model provides the following technical solution: a fireproof and high temperature resistant cable, comprising a cable body 1, the cable body 1 comprising: a wire core 11, a flexible filling layer 12, an outer insulating layer 13 and a fireproof braided layer 14.

[0029] Further, by Figure 1 As shown, in this embodiment, an inner insulating layer 111 is wrapped on the outside of the cable body 1, a flexible filling layer 12 is wrapped on the wire core 11, and a mounting hole 121 for mounting the wire core 11 is provided in the flexible filling layer 12, an outer insulating layer 13 is wrapped on the flexible filling layer 12, and a fireproof braided layer 14 is wrapped on the outer insulating layer 13. After adopting the above scheme, when in use, different wire cores 11 are isolated from each other by the set flexible filling layer 12, so that the wire cores 11 are prevented from affecting each other, thereby improving safety. The fireproof performance of the cable body 1 is enhanced by the set fireproof braided layer 14. The structural form of the fireproof braided layer 14 makes it difficult for external flames to affect the inner wire core 11, thereby further improving safety. It is also applicable to occasions where multiple cable bodies 1 are laid in groups.

[0030] Optionally, by Figure 1As shown, in this embodiment, the outer insulating layer 13 is one of polystyrene foam, polypropylene mesh tape, low-smoke halogen-free flame-retardant rope, glass fiber rope or hemp rope, such as polystyrene foam, which not only has a certain flexibility to increase the flexibility and tensile mobility of the cable, but also has good flame retardant properties, which can effectively prevent the occurrence of fire.

[0031] Optionally, by Figure 1 As shown, in this embodiment, the fireproof braided layer 14 is one of glass fiber braid, asbestos fiber braid, ceramic fiber braid or polyester fiber braid, such as ceramic fiber braid, which has excellent fireproof, heat insulation, sound insulation and corrosion resistance, so that external flames are not easy to affect the inner wire core 11.

[0032] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the fireproof braided layer 14 includes weft fiber yarns 141 and warp fiber yarns 142. The weft fiber yarns 141 and the warp fiber yarns 142 are interlaced and woven to form the fireproof braided layer 14. The fireproof braided layer 14 has an interlaced woven structure, high stability, and bidirectional tensile resistance, and has a good flame retardant effect.

[0033] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, the weft fiber filament 141 includes a first fiber filament 1411, a second fiber filament 1412 and a metal wire 1413. The first fiber filament 1411, the second fiber filament 1412 and the metal wire 1413 are twisted into a spiral weft fiber filament 141, which has high strength, high tensile resistance and high bending resistance. The structural strength and fire resistance are further improved by the provision of the metal wire 1413, so that the external flame is not easy to affect the inner wire core 11, and the cable body 1 is avoided from breaking when subjected to high temperature, thereby extending the service life of the cable body 1.

[0034] Optionally, by Figure 1-Figure 3 As shown, in this embodiment, the metal wire 1413 is a tungsten wire or a stainless steel wire, which can withstand extremely high temperatures, further improving the structural strength and fire resistance.

[0035] Optionally, by Figure 1 and Figure 2 As shown, in the present embodiment, the pore size of the fireproof braided layer 14 is 0.03mm-0.07mm, for example, 0.03mm, 0.05mm or 0.07mm. In principle, the smaller the pore size of the fireproof braided layer 14, the higher the fireproof performance. However, considering various factors, such as the heat dissipation performance of the cable body 1, the fireproof braided layer 14 still needs to have a certain pore size, which is beneficial to the air permeability and heat dissipation of the cable body 1. However, the pore size should not be too large to avoid affecting the fireproof performance.

[0036] Components not described in detail herein are prior art.

[0037] Working principle and use process of the utility model: The cable body 1 of the utility model comprises a wire core 11, a flexible filling layer 12, an outer insulating layer 13 and a fireproof braided layer 14, and the weft fiber filaments 141 and the warp fiber filaments 142 are interlaced and woven to form the fireproof braided layer 14;

[0038] The flexible filling layer 12 is provided to isolate different wire cores 11 from each other, avoiding mutual influence between the wire cores 11 and improving safety. The fireproof braided layer 14 is provided to enhance the fireproof performance of the cable body 1. The structure of the fireproof braided layer 14 makes it difficult for external flames to affect the wire cores 11 inside, further improving safety. The device is also applicable to situations where multiple cable bodies 1 are laid in groups.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fireproof and high temperature resistant cable, comprising a cable body (1), characterized in that: The cable body (1) comprises: A wire core (11), the outer portion of the cable body (1) being wrapped with an inner insulating layer (111); A flexible filling layer (12), the flexible filling layer (12) being wrapped around the wire core (11), and having a mounting hole (121) in the flexible filling layer (12) for mounting the wire core (11); An outer insulating layer (13), the outer insulating layer (13) being wrapped on the flexible filling layer (12); A fireproof braided layer (14), wherein the fireproof braided layer (14) is wrapped on the outer insulating layer (13); The fireproof braided layer (14) comprises weft fiber filaments (141) and warp fiber filaments (142), and the weft fiber filaments (141) and the warp fiber filaments (142) are interlaced and woven to form the fireproof braided layer (14); The weft fiber filaments (141) comprise a first fiber filament (1411), a second fiber filament (1412), and a metal wire (1413); the first fiber filament (1411), the second fiber filament (1412), and the metal wire (1413) are twisted to form a spiral weft fiber filament (141).

2. A fireproof and high temperature resistant cable according to claim 1, characterized in that: The outer insulating layer (13) is one of polystyrene foam, polypropylene mesh tape, low-smoke halogen-free flame-retardant rope, glass fiber rope or hemp rope.

3. A fireproof and high temperature resistant cable according to claim 1, characterized in that: The fireproof braided layer (14) is one of glass fiber braided fabric, asbestos fiber braided fabric, ceramic fiber braided fabric or polyester fiber braided fabric.

4. A fireproof and high temperature resistant cable according to claim 1, characterized in that: The metal wire (1413) is a tungsten wire or a stainless steel wire.

5. The fireproof and high temperature resistant cable according to claim 1, characterized in that: The pore size of the fireproof braided layer (14) is 0.03 mm-0.07 mm.

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