Flame-retardant cable

Abstract

The utility model discloses a flame-retardant cable which comprises a plurality of cable cores, a framework is arranged among the cable cores, an inner sheath is arranged on the outer side of the framework, a filler layer filled on the outer sides of the cable cores is arranged between the inner sheath and the framework, an oxygen barrier layer is arranged on the outer side of the inner sheath, an armor layer is arranged on the outer side of the oxygen barrier layer, and a flame-retardant layer is arranged on the outer side of the armor layer. And a flame-retardant wrapping layer and an outer sheath are arranged on the outer side of the armor layer. According to the utility model, through the design of the filler layer and the flame-retardant wrapping layer, the cable can rapidly play a flame-retardant role no matter the cable burns from the outside or the inside, and the flame-retardant effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a flame-retardant cable. Background Art

[0002] Electricity supply has become an integral part of the rapidly developing global economy, and wires and cables, as the carriers of power supply, are ubiquitous across all industries. Because the polymer insulation materials used in wires and cables are flammable, internal and external factors often cause cable fires during power transmission, resulting in damage to life and property.

[0003] The current flame retardant and fireproof cables have relatively poor performance, cannot quickly achieve flame retardant effects, and have insufficient flame retardant performance, which greatly reduces the scope of use of the cables. Utility Model Content

[0004] The technical problem to be solved by the present invention is that the existing flame retardant cables cannot quickly achieve the flame retardant effect and the flame retardant performance is not good enough.

[0005] In order to solve the above problems, the technical solution of the present invention is: a flame-retardant cable, comprising multiple cable cores, a skeleton is provided between the multiple cable cores, an inner sheath is provided on the outside of the skeleton, and a filler layer filled on the outside of the cable core is provided between the inner sheath and the skeleton, an oxygen insulation layer is provided on the outside of the inner sheath, an armor layer is provided on the outside of the oxygen insulation layer, and a flame-retardant cladding and an outer sheath are provided on the outside of the armor layer.

[0006] Furthermore, an insulating layer is provided on the outside of the cable core, and an isolation layer is provided on the outside of the insulating layer.

[0007] Furthermore, the skeleton is provided with slots having the same number as the cable cores, and the cable cores are located in the slots.

[0008] Furthermore, the inner sheath and the outer sheath are both flame retardant sheaths.

[0009] Furthermore, the filler layer is flame-retardant gas gel.

[0010] The advantages of the present invention over the prior art are that the present invention can quickly play a flame retardant role regardless of whether the cable starts burning from the outside or the inside through the design of the filler layer and the flame retardant coating, and the flame retardant effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] As shown in the figure: 1. Cable core; 2. Insulation layer; 3. Isolation layer; 4. Skeleton; 5. Inner sheath; 6. Filling layer; 7. Oxygen barrier layer; 8. Armor layer; 9. Flame retardant cladding; 10. Outer sheath. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] like Figure 1 As shown, a flame retardant cable includes three cable cores 1, an insulating layer 2 is provided on the outside of the cable core 1, an isolation layer 3 is provided on the outside of the insulating layer 2, a skeleton 4 is provided between the three cable cores 1, and the skeleton 4 is provided with the same number of slots as the cable cores 1, and the cable cores 1 are located in the slots.

[0015] The skeleton 4 can isolate the cable cores 1 and prevent the cable cores 1 from contacting each other.

[0016] An inner sheath 5 is provided on the outside of the skeleton 4, and a filler layer 6 is provided between the inner sheath 5 and the skeleton 4 and filled on the outside of the cable core 1. The filler layer 6 is a flame-retardant gas gel.

[0017] When a flame occurs around the cable, the flame-retardant gel in the filler layer 6 thermally decomposes to produce gas, and causes the aerogel material to expand to form a porous structure. This porous structure has excellent thermal insulation properties and can prevent heat transfer and flame spread. At the same time, the inert gas released from the flame-retardant gel can dilute the oxygen concentration around the flame and inhibit the combustion process.

[0018] An oxygen barrier layer 7 is provided on the outer side of the inner sheath 5 , an armor layer 8 is provided on the outer side of the oxygen barrier layer 7 , and a flame retardant cladding 9 and an outer sheath 10 are provided on the outer side of the armor layer 8 .

[0019] The oxygen barrier 7 prevents oxygen from entering the cable, reducing or preventing oxidation, aging, and degradation. The flame-retardant sheath 9 is made of a flame- and high-temperature-resistant material, such as flame-retardant polyurethane, flame-retardant polyolefin, or flame-retardant rubber. It exhibits high flame retardancy, inhibiting the spread of flames and slowing the spread of fire.

[0020] The flame retardant sheath 9 plays the following roles in the cable:

[0021] Stop the spread of flames: The flame retardant cladding 9 can resist the further spread of flames, thereby reducing the scope and damage of the fire.

[0022] Protecting conductors and insulation layer: The flame retardant sheath 9 can provide additional protection for the conductors and insulation layer, preventing the direct impact of fire on the internal structure of the cable.

[0023] Increased cable safety: By using flame-retardant sheath 9, the cable can maintain high electrical and insulation performance when encountering a fire, reducing the impact of the fire on the power system.

[0024] In specific use, the utility model can quickly play a flame retardant role regardless of whether the cable starts burning from the outside or the inside through the design of the filler layer 6 and the flame retardant coating 9, and the flame retardant effect is good.

[0025] The undisclosed parts in the present invention are all prior art, and their specific structures and working principles are not described in detail here.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0028] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A flame-retardant cable comprising a plurality of cable cores (1), characterized in that: A skeleton (4) is provided between a plurality of cable cores (1); an inner sheath (5) is provided on the outer side of the skeleton (4); a filler layer (6) is provided between the inner sheath (5) and the skeleton (4) and is filled on the outer side of the cable core (1); an oxygen barrier layer (7) is provided on the outer side of the inner sheath (5); an armor layer (8) is provided on the outer side of the oxygen barrier layer (7); and a flame retardant cladding (9) and an outer sheath (10) are provided on the outer side of the armor layer (8).

2. The flame-retardant cable according to claim 1, characterized in that: An insulating layer (2) is provided on the outside of the cable core (1), and an isolation layer (3) is provided on the outside of the insulating layer (2).

3. The flame-retardant cable according to claim 1, characterized in that: The skeleton (4) is provided with the same number of slots as the number of cable cores (1), and the cable cores (1) are located in the slots.

4. The flame-retardant cable according to claim 1, characterized in that: The inner sheath (5) and the outer sheath (10) are both flame-retardant sheaths.

5. The flame-retardant cable according to claim 1, characterized in that: The filler layer (6) is flame-retardant gas gel.

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