Fireproof flame-retardant cable

Abstract

The utility model relates to the field of cables, and discloses a fire-resistant flame-retardant cable, which comprises at least one cable core, an inner insulating layer is wrapped on the outer wall of each cable core, the fire-resistant flame-retardant cable further comprises a separation pipe, at least one separation plate is arranged in the separation pipe, a fan-shaped separation cavity is formed between every two adjacent separation plates, the cable cores are arranged in the fan-shaped separation cavities, and the inner insulating layer is wrapped on the inner insulating layer. A partition cavity is formed in the wire core, flame retardant is filled in the partition cavity, at least one flame-retardant gas pipe arranged in the length direction of the wire core is arranged in the partition cavity, gas cavity units separated by partition plates are arranged in the flame-retardant gas pipe, and the outer wall of the partition pipe is wrapped with an outer insulating layer and a flame-retardant layer. Compared with the prior art, the flame-retardant cable has the advantages that the fan-shaped separation cavities can separate the wire cores into independent units, the whole cable is prevented from being ignited by one wire core, flame-retardant protection can be effectively carried out on the wire cores through the flame retardant and the flame-retardant gas pipe, and the flame-retardant effect is greatly improved.

Description

Technical Field

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

[0002] The wire and cable industry is the second largest industry in China after the automobile industry. Its product variety satisfaction rate and domestic market share both exceed 90%. With the continuous expansion of China's electric power industry, data communication industry, urban rail transit industry, automobile industry, shipbuilding industry and other industries, the demand for wires and cables will also grow rapidly. The wire and cable industry still has huge development potential in the future.

[0003] Fire resistance and flame retardancy have always been an important element of cables. Cables are usually composed of an outer protective layer, a flame retardant layer, and multiple internal cores. When a core fails and catches fire, it can easily cause damage to the entire cable. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is that the wire core in the existing flame retardant cable is easy to ignite the whole cable after catching fire.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a fire-resistant and flame-retardant cable, comprising at least one wire core, the outer walls of the wire cores are all wrapped with an inner insulating layer, and also comprising a partition tube, at least one partition plate is provided in the partition tube, and a fan-shaped partition cavity is formed between adjacent partition plates, the wire cores are all placed in the fan-shaped partition cavity, the partition cavity is filled with a flame retardant, and at least one flame retardant gas pipe arranged along the length direction of the wire core is provided in the partition cavity, the flame retardant gas pipe is provided with an air cavity unit separated by a partition, and the outer wall of the partition tube is wrapped with an outer insulating layer and a flame retardant layer.

[0008] As an improvement, the inner wall of the fan-shaped partition cavity is provided with an inner heat insulation layer.

[0009] As an improvement, the outer wall of the inner insulating layer is wrapped with an inner shielding layer, and the outer wall of the outer insulating layer is wrapped with an outer shielding layer.

[0010] As an improvement, the outer wall of the outer insulating layer is provided with an outer protective layer.

[0011] As an improvement, an outer heat insulation layer is provided between the outer insulating layer and the flame retardant layer.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model has the advantages of: the fan-shaped separation cavity can separate the wire core into independent units to prevent one wire core from igniting the entire cable, and the flame retardant and the flame retardant gas pipe can effectively provide flame retardant protection for the wire core, greatly improving the flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model discloses an explosion diagram of a fire-resistant and flame-retardant cable.

[0015] Figure 2 It is a cross-sectional view of a fire-resistant and flame-retardant cable of the utility model.

[0016] Figure 3 The utility model discloses a cross-sectional view of a fire-resistant and flame-retardant cable and flame-retardant gas pipe.

[0017] As shown in the figure: 1. Wire core; 2. Separation tube; 3. Separation plate; 4. Flame-retardant gas pipe; 5. Inner insulation layer; 6. Inner shielding layer; 7. Flame retardant; 8. Inner insulation layer; 9. Outer insulation layer; 10. Outer shielding layer; 11. Outer insulation layer; 12. Flame retardant layer; 13. Outer protective layer; 14. Air cavity unit. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] like Figures 1 to 3 As shown, a fire-resistant flame-retardant cable comprises at least one wire core 1, the outer walls of the wire cores 1 are all wrapped with an inner insulating layer 5, and also comprises a separator tube 2, at least one separator plate 3 is arranged in the separator tube 2, and a fan-shaped separator cavity is formed between adjacent separator plates 3, and the inner wall of the fan-shaped separator cavity is provided with an inner thermal insulation layer 8, the wire cores 1 are all placed in the fan-shaped separator cavity, and the separator cavity is filled with a flame retardant 7, and at least one flame retardant gas pipe 4 arranged along the length direction of the wire core 1 is provided in the separator cavity, and the flame retardant gas pipe 4 is provided with an air cavity unit 14 separated by a partition, and the outer wall of the separator tube 2 is once wrapped with an outer insulating layer 9, an outer shielding layer 10, an outer thermal insulation layer 11, a flame retardant layer 12, and an outer protective layer 13 from the inside to the outside.

[0020] In specific use, the flame retardant layer 12 can be protected by the outer protective layer 13 to prevent the flame retardant layer 12 from being corroded by external acids and alkalis. The inner shielding layer 6 and the outer shielding layer 10 can effectively retrieve the electric field strength and improve the electrical performance of the cable. The outer insulating layer 9 and the inner insulating layer 5 can prevent current leakage and ensure the stability of the electrical performance of the cable. At the same time, in the event of a fire, a certain fire resistance time can be maintained to prevent the fire from spreading rapidly through the core 1. The fan-shaped separation cavity can be used to separate multiple cores 1 into independent spaces. When a core 1 fails, the flame retardant 7 filled inside is used for flame retardancy. The flame retardant 7 undergoes an endothermic reaction at high temperature, reduces the stability of the combustible surface, and releases non-combustible gas to achieve a flame retardant effect. At the same time, the high temperature causes the adjacent flame retardant gas pipe 4 to be damaged, causing the air cavity unit 14 to be damaged, and non-combustible gas is further sprayed out of the air cavity unit 14, which greatly improves the flame retardant effect. The fan-shaped separation cavity can be individually insulated by the inner insulation layer 8 to reduce heat transfer.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0023] The above describes the utility model and its implementation methods, which are not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention of the utility model, they can creatively design a structure and embodiment similar to the technical solution, which should belong to the protection scope of the utility model.

Claims

1. A fire-resistant flame-retardant cable, comprising at least one wire core (1), wherein the outer wall of each wire core (1) is wrapped with an inner insulating layer (5), characterized in that: It also comprises a partition tube (2), wherein at least one partition plate (3) is provided in the partition tube (2), a fan-shaped partition cavity is formed between adjacent partition plates (3), the wire cores (1) are all placed in the fan-shaped partition cavity, the partition cavity is filled with a flame retardant (7), at least one flame retardant gas pipe (4) is arranged along the length direction of the wire core (1), the flame retardant gas pipe (4) is provided with an air cavity unit (14) separated by a partition plate, and the outer wall of the partition tube (2) is wrapped with an outer insulating layer (9) and a flame retardant layer (12).

2. A fire-resistant and flame-retardant cable according to claim 1, characterized in that: An inner heat insulation layer (8) is provided on the inner wall of the sector-shaped partition cavity.

3. A fire-resistant and flame-retardant cable according to claim 1, characterized in that: The outer wall of the inner insulating layer (5) is wrapped with an inner shielding layer (6), and the outer wall of the outer insulating layer (9) is wrapped with an outer shielding layer (10).

4. A fire-resistant and flame-retardant cable according to claim 3, characterized in that: An outer protective layer (13) is provided on the outer wall of the outer insulating layer (9).

5. The fire-resistant and flame-retardant cable according to claim 1, characterized in that: An external heat insulation layer (11) is provided between the external insulation layer (9) and the flame retardant layer (12).

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