CN222167985U

CN222167985U - A double-insulated fire-resistant cable

Info

Publication number: CN222167985U
Application number: CN202420138253.4U
Authority: CN
Inventors: 郭若鹏; 侯晓英; 陈志杰
Original assignee: Fujian Xinyiyuan Cable Co ltd
Current assignee: Fujian Xinyiyuan Cable Co ltd
Priority date: 2024-01-19
Filing date: 2024-01-19
Publication date: 2024-12-13
Anticipated expiration: 2034-01-19

Abstract

The utility model discloses a double-layer insulated fire-resistant cable, comprising a plurality of cable cores, a shielding layer is arranged on the outside of the cable core, the shielding layer is made of copper wire, a filling layer is arranged on the outside of the shielding layer, an insulating sleeve is arranged in the middle of the filling layer, an elastic steel wire rope is arranged inside the insulating sleeve, an elastic layer is arranged on the outside of the filling layer, a first fireproof layer is arranged on the outside of the elastic layer, an insulating layer is arranged on the outside of the first fireproof layer, and a second fireproof layer is arranged on the outside of the insulating layer. The utility model can improve the strength of the cable structure by designing the function of the elastic steel wire rope, and at the same time, with the function of the insulating sleeve, it can improve the elasticity of the internal structure of the cable, so that the bending and compression resistance of the cable is better, and the function of the elastic layer can further improve the elasticity of the cable structure, and further improve the bending and compression resistance.

Description

Double-layer insulating fireproof cable

Technical Field

The utility model relates to the technical field of cables, in particular to a double-layer insulating fireproof cable.

Background

The cable is typically a rope-like cable stranded from several wires or groups of wires (at least two in each group), each group being insulated from each other and often twisted around a center, with a highly insulating coating over the entire outer surface. The cable has an inner energized, outer insulated feature. The cables include power cables, compensation cables, shield cables, withstand voltage cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and the like. They are composed of single-strand or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like, and are respectively applied to different occasions.

The utility model patent with the publication number of CN206194419U discloses a wear-resistant cable, the wear-resistant cable comprises at least four wire cores, drainage wires are arranged in the four wire cores, a wear-resistant layer, an armor layer and a sheath layer are sequentially arranged in the wear-resistant cable from inside to outside, fillers and isolating supports are uniformly arranged among the wire cores, the wire cores comprise conductors, insulating layers and shielding layers, the number of the conductors is at least one, the conductors adopt tin-plated copper conductors, the insulating layers are made of crosslinked polyethylene materials, the thickness of the wear-resistant layer is 0.2-0.25mm, the shielding layers are woven by mica tapes, a cylindrical wear-resistant support is arranged in the middle of the wear-resistant cable, and the thickness of the armor layer is 0.1-0.25 mm.

In the use process of the cable in the patent, the elasticity of the cable structure is insufficient, the cable is bent or pressed to easily cause the damage short circuit of the inner cable core, the use of the cable is affected, and the insulation fireproof effect of the cable is also insufficient. Therefore, improvements are needed.

Disclosure of utility model

The utility model aims to provide a double-layer insulating fireproof cable, which solves the problem that the cable is easy to cause damage and short circuit of an inner cable core due to bending or compression of the cable and also solves the problem that the insulating fireproof effect of the cable is insufficient.

In order to achieve the purpose, the double-layer insulating fireproof cable comprises a plurality of cable cores, wherein shielding layers are arranged on the outer sides of the cable cores, the shielding layers are made of copper wire strips, filling layers are arranged on the outer sides of the shielding layers, insulating sleeves are arranged in the middle of the filling layers, elastic steel wire ropes are arranged in the insulating sleeves, elastic layers are arranged on the outer sides of the filling layers, first fireproof layers are arranged on the outer sides of the elastic layers, insulating layers are arranged on the outer sides of the first fireproof layers, and second fireproof layers are arranged on the outer sides of the insulating layers.

Preferably, the filling layer is made of vulcanized rubber. By designing the filling layer, the structure elasticity and the insulation effect can be improved.

Preferably, the elastic layer is made of ceramic silicone rubber. By designing the elastic layer, the elasticity and strength of the cable internal structure can be further improved.

Preferably, the first fireproof layer is made of asbestos. Through the first flame retardant coating of design, can improve the fireproof effect of cable.

Preferably, the insulating layer is made of crosslinked polyethylene. By designing the insulating layer, the insulating performance of the cable can be further improved.

Preferably, the second fireproof layer is made of flame-retardant polyolefin. Through designing the second flame retardant coating for the cable surface has good fire prevention, anticorrosion and crack prevention effect.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model can improve the structural strength of the cable by designing the function of the elastic steel wire rope, and can improve the elasticity of the inner structure of the cable by matching with the function of the insulating sleeve, so that the bending resistance and the compression resistance of the cable are better, and the elasticity of the cable structure and the bending resistance and the compression resistance are further improved by designing the function of the elastic layer.

2. According to the utility model, the purpose of insulating and protecting the inner cable core can be achieved through the function of the filling layer, meanwhile, the insulating effect of the cable can be further improved through the function of the insulating layer, the use safety of the cable is improved, the cable has good fireproof and flame-retardant effects through the functions of the first fireproof layer and the second fireproof layer, and meanwhile, the second fireproof layer is made of flame-retardant polyolefin material and has good corrosion-resistant and cracking-resistant effects.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional perspective view of FIG. 1 of the present utility model;

fig. 3 is a top cross-sectional view of fig. 1 of the present utility model.

In the figure, 1, a cable core, 2, a shielding layer, 3, a filling layer, 4, an insulating sleeve, 5, an elastic steel wire rope, 6, an elastic layer, 7, a first fireproof layer, 8, an insulating layer and 9, and a second fireproof layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Please refer to fig. 1, fig. 2, fig. 3, a double-deck insulating fire-resistant cable, including a plurality of cable cores 1, the outside of cable core 1 is provided with shielding layer 2, shielding layer 2 is copper wire strip material, shielding layer 2's outside is provided with filling layer 3, filling layer 3 is vulcanized rubber material, through designing filling layer 3, can improve structure elasticity and insulating effect, the middle part of filling layer 3 is provided with insulating cover 4, the inside of insulating cover 4 is provided with elastic wire rope 5, the outside of filling layer 3 is provided with elastic layer 6, elastic layer 6 is ceramic silicone rubber material, elasticity and intensity through designing elastic layer 6, can further improve cable inner structure.

Referring to fig. 1, 2 and 3, the outer side of the elastic layer 6 is provided with a first fireproof layer 7, the first fireproof layer 7 is made of asbestos, the fireproof effect of the cable can be improved by designing the first fireproof layer 7, the outer side of the first fireproof layer 7 is provided with an insulating layer 8, the insulating layer 8 is made of crosslinked polyethylene, the insulating performance of the cable can be further improved by designing the insulating layer 8, the outer side of the insulating layer 8 is provided with a second fireproof layer 9, the second fireproof layer 9 is made of flame-retardant polyolefin, and the outer surface of the cable has good fireproof, anti-corrosion and anti-cracking effects by designing the second fireproof layer 9.

The utility model has the concrete implementation processes that the adopted shielding layer 2 is made of copper wire strip material, can provide electromagnetic shielding effect for the cable core 1, the adopted filling layer 3 is made of vulcanized rubber material, can improve structural elasticity and insulation effect, the adopted insulating sleeve 4 and the adopted elastic steel wire rope 5 can improve cable structural strength and elasticity, so that the cable has better bending resistance and compression resistance, the adopted elastic layer 6 is made of ceramic silicon rubber material, can further improve the elasticity and strength of the inner structure of the cable, the adopted first fireproof layer 7 is made of asbestos material, can improve the fireproof effect of the cable, the adopted insulating layer 8 is made of crosslinked polyethylene material, can further improve the insulation performance of the cable, and the adopted second fireproof layer 9 is made of flame-retardant polyolefin material, so that the outer surface of the cable has good fireproof, anticorrosion and cracking resistance effects. Through the effect of elasticity wire rope 5, can improve cable structural strength, the effect of cooperation insulating sheath 4 simultaneously, can improve cable inner structure's elasticity, make cable's bending resistance bending effect and resistance to compression better, through the effect of elastic layer 6, can further improve cable structural elasticity, further improve bending resistance bending and compressive property, can play insulating protection's purpose to inside cable core 1 through the effect of filling layer 3, cooperate the effect of insulating layer 8 simultaneously, can further improve cable's insulating effect, improve cable safety in utilization, through the effect of first flame retardant coating 7 and second flame retardant coating 9, make cable have better fire prevention flame retardant effect, second flame retardant coating 9 is flame retardant polyolefin material simultaneously, have good corrosion-resistant anti-cracking effect.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The double-layer insulating fireproof cable comprises a plurality of cable cores (1) and is characterized in that shielding layers (2) are arranged on the outer sides of the cable cores (1), the shielding layers (2) are made of copper wire strips, filling layers (3) are arranged on the outer sides of the shielding layers (2), insulating sleeves (4) are arranged in the middle of the filling layers (3), elastic steel wire ropes (5) are arranged in the insulating sleeves (4), elastic layers (6) are arranged on the outer sides of the filling layers (3), first fireproof layers (7) are arranged on the outer sides of the elastic layers (6), insulating layers (8) are arranged on the outer sides of the first fireproof layers (7), and second fireproof layers (9) are arranged on the outer sides of the insulating layers (8).

2. A double-layer insulated fireproof cable according to claim 1, characterized in that the filling layer (3) is made of vulcanized rubber.

3. A double-layer insulated fireproof cable according to claim 1, characterized in that the elastic layer (6) is made of ceramic silicone rubber.

4. A double insulated refractory cable according to claim 1, wherein the first flame-retardant layer (7) is of asbestos material.

5. A double-layer insulated fire-resistant cable according to claim 1 characterized in that the insulating layer (8) is of crosslinked polyethylene material.

6. A double-layer insulated fire-resistant cable according to claim 1, characterized in that the second fire-resistant layer (9) is made of flame-retardant polyolefin.