Flame-retardant fireproof cable

Abstract

The utility model relates to the technical field of cables, and discloses a flame-retardant fireproof cable, which comprises a cable body, protective covers are arranged at the left end and the right end of the cable body, a sheath is arranged on the outer side of the cable body, a protective layer is arranged on the inner side of the sheath, a flame-retardant layer is arranged on the inner side of the protective layer, and a fireproof layer is arranged on the inner side of the flame-retardant layer. A shielding layer is arranged on the inner side of the flame-retardant layer, and an insulating layer is arranged on the inner side of the shielding layer. According to the utility model, the sheath, the protection layer and the flame-retardant layer are arranged, so that the cable body can be fireproof and flame-retardant, and the protection layer is arranged, so that the damage to the interior of the cable body can be avoided when people pull wires; according to the utility model, the shielding layer, the insulating layer and the filling layer are arranged, so that the shielding and insulating effects on the auxiliary wire cores and the main wire cores can be realized, the filling layer has a relatively low friction coefficient, the abrasion of the auxiliary wire cores and the main wire cores can be reduced, and the service life of the cable body is further prolonged.

Description

Technical Field

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

[0002] A cable is a device for transmitting electrical energy or signals, usually composed of several or several groups of wires. There are power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single-strand or multi-strand wires and insulating layers, and are used to connect circuits, electrical appliances, etc.

[0003] When in use, the cable itself is prone to generate a large amount of heat. Especially when the external temperature is high, combined with its own heat generation, it will cause the aging speed of the cable to increase, reduce its service life, and the temperature difference will affect the transmission of the cable.

[0004] At present, some cables on the market have poor protection performance, cannot fireproof and flame-retard well, and it is easy to damage the inside of the cable when personnel strip the cable. Content of the Utility Model

[0005] The purpose of the utility model is to provide a flame-retardant and fire-proof cable, which can solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A flame-retardant and fire-proof cable, including a cable body, protective covers are arranged at the left and right ends of the cable body, the outer side of the cable body is a sheath, a protective layer is arranged inside the sheath, a flame-retardant layer is arranged inside the protective layer, a shielding layer is arranged inside the flame-retardant layer, an insulating layer is arranged inside the shielding layer, a sub-core and a main core are arranged inside the insulating layer, and a filling layer is filled between the sub-core and the main core and the insulating layer.

[0007] Preferably, the sheath is a fluoroplastic sheath.

[0008] Preferably, the protective layer is a polyvinyl chloride protective layer.

[0009] Preferably, the flame-retardant layer is a polypropylene film.

[0010] Preferably, the shielding layer is an aluminum-magnesium alloy layer.

[0011] Preferably, the insulating layer is an ethylene-propylene rubber layer.

[0012] Preferably, the filling layer is a fluoropolymer.

[0013] Preferably, six sub-cores are provided, and the sub-cores are arranged around the main core.

[0014] Compared with the prior art, the utility model provides a flame-retardant and fire-proof cable, which has the following

[0015] beneficial effects:

[0016] 1. By setting a sheath, a protective layer and a flame-retardant layer, the utility model can play a role in fire prevention and flame retardance for the cable body. The setting of the protective layer can avoid damage to the inside of the cable body when people pull the wire;

[0017] 2. By setting a shielding layer, an insulating layer and a filling layer, the utility model can play a role in shielding and insulating the secondary core and the main core. The filling layer also has a low friction coefficient, which can reduce the wear of the secondary core and the main core, thereby improving the service life of the cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic cross-sectional structure diagram of the utility model;

[0019] Figure 2 is a schematic side-sectional structure diagram of the utility model;

[0020] Figure 3 is the utility model Figure 2 magnified structure diagram at A;

[0021] Figure 4 is a schematic three-dimensional structure diagram of the utility model.

[0022] Wherein: 1, cable body; 2, protective cover; 3, sheath; 4, protective layer; 5, flame-retardant layer; 6, shielding layer; 7, insulating layer; 8, secondary core; 9, main core; 10, filling layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4, A flame-retardant and fire-proof cable shown in the figure includes a cable body 1. Protective covers 2 are provided at both the left and right ends of the cable body 1. The outer side of the cable body 1 is a sheath 3. A protective layer 4 is provided inside the sheath 3. A flame-retardant layer 5 is provided inside the protective layer 4. A shielding layer 6 is provided inside the flame-retardant layer 5. An insulating layer 7 is provided inside the shielding layer 6. A sub-core 8 and a main core 9 are provided inside the insulating layer 7. A filling layer 10 is filled between the sub-core 8, the main core 9 and the insulating layer 7.

[0026] Please refer to Figure 3 , The sheath 3 is a fluoroplastic sheath.

[0027] In this embodiment: The sheath 3 is a fluoroplastic sheath. Fluoroplastics have good high-temperature resistance, fire-proof and wear-resistant properties, and can play a good role in protecting the inside of the cable.

[0028] Please refer to Figure 3 , The protective layer 4 is a polyvinyl chloride protective layer.

[0029] In this embodiment: The protective layer 4 is a polyvinyl chloride protective layer. Polyvinyl chloride has certain wear-resistant and anti-cutting properties, and can play a protective role when personnel strip the cable body 1.

[0030] Please refer to Figure 3 , The flame-retardant layer 5 is a polypropylene film.

[0031] In this embodiment: The flame-retardant layer 5 is a polypropylene film. The polypropylene film has the property of high-temperature expansion and can effectively play a flame-retardant effect.

[0032] Working principle: The sheath 3 is a fluoroplastic sheath. Fluoroplastics have good high-temperature resistance, fire-proof and wear-resistant properties, and can play a good role in protecting the inside of the cable; The protective layer 4 is a polyvinyl chloride protective layer. Polyvinyl chloride has certain wear-resistant and anti-cutting properties, and can play a protective role when personnel strip the cable body 1; The flame-retardant layer 5 is a polypropylene film. The polypropylene film has the property of high-temperature expansion and can effectively play a flame-retardant effect; The shielding layer 6 is an aluminum-magnesium alloy layer. Aluminum-magnesium alloy has good electromagnetic shielding properties, high strength and corrosion resistance, and can effectively protect the internal structure of the cable and improve the service life; The insulating layer 7 is an ethylene-propylene rubber layer. Ethylene-propylene rubber has good electrical insulation properties and high-temperature resistance, and can play a protective role for the internal sub-core 8 and main core 9; The filling layer 10 is a fluoropolymer. Fluoropolymers have excellent high-temperature resistance, chemical stability and electrical insulation properties, and their friction coefficient is relatively low, which can effectively reduce the wear of the sub-core 8 and main core 9.

[0033] Embodiment 2

[0034] Please refer to Figure 3, this embodiment further illustrates Example 1. In the illustration, the shielding layer 6 is an aluminum-magnesium alloy layer.

[0035] In this embodiment: The shielding layer 6 is an aluminum-magnesium alloy layer. Aluminum-magnesium alloy has good electromagnetic shielding performance, high strength and corrosion resistance, and can effectively protect the internal structure of the cable and extend its service life.

[0036] Please refer to Figure 3 , the insulating layer 7 is an ethylene propylene rubber layer.

[0037] In this embodiment: The insulating layer 7 is an ethylene propylene rubber layer. Ethylene propylene rubber has good electrical insulation performance and high temperature resistance, and can protect the internal secondary core 8 and main core 9.

[0038] Please refer to Figure 3 , the filling layer 10 is a fluoropolymer.

[0039] In this embodiment: The filling layer 10 is a fluoropolymer. Fluoropolymer has excellent high temperature resistance, chemical stability and electrical insulation, and its friction coefficient is relatively low, which can effectively reduce the wear of the secondary core 8 and main core 9.

[0040] Please refer to Figure 3 , there are six secondary cores 8, and the secondary cores 8 are arranged around the outside of the main core 9.

[0041] In this embodiment: The arrangement of the secondary core 8 and the main core 9 can increase the electrical conductivity of the cable.

[0042] It should be noted that in this article, relational terms such as first and second are only used 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 term "including" - "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process - method - article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process - method - article or device.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame retardant and fireproof cable, comprising a cable body (1), characterized in that: The left and right ends of the cable body (1) are provided with protective covers (2); the outer side of the cable body (1) is a sheath (3); the inner side of the sheath (3) is provided with a protective layer (4); the inner side of the protective layer (4) is provided with a flame retardant layer (5); the inner side of the flame retardant layer (5) is provided with a shielding layer (6); the inner side of the shielding layer (6) is provided with an insulating layer (7); the inner side of the insulating layer (7) is provided with a secondary core (8) and a main core (9); a filling layer (10) is filled between the secondary core (8) and the main core (9) and the insulating layer (7).

2. A flame retardant and fireproof cable according to claim 1, characterized in that: The sheath (3) is a fluoroplastic sheath.

3. A flame retardant and fireproof cable according to claim 1, characterized in that: The protective layer (4) is a polyvinyl chloride protective layer.

4. A flame retardant and fireproof cable according to claim 1, characterized in that: The flame retardant layer (5) is a polypropylene film.

5. The flame retardant and fireproof cable according to claim 1, characterized in that: The shielding layer (6) is an aluminum-magnesium alloy layer.

6. The flame retardant and fireproof cable according to claim 1, characterized in that: The insulating layer (7) is an ethylene propylene rubber layer.

7. The flame retardant and fireproof cable according to claim 1, characterized in that: The filling layer (10) is a fluorine-containing polymer.

8. The flame retardant and fireproof cable according to claim 1, characterized in that: Six secondary cores (8) are provided, and the secondary cores (8) surround the outside of the main core (9).

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