A steel belt embossed fireproof cable

Abstract

The utility model discloses a kind of steel band embossed fireproof cable, from inside to outside sequentially include core, filling layer, glass fibre layer, flame-retardant coating and sheath layer;Core from inside to outside sequentially include conductor, shielding layer and insulating layer, sheath layer includes embossed steel sheath and outer sheath.The utility model of a kind of steel band embossed fireproof cable provides multilayer protection, and the part of fireproof is not easy to be damaged, improves compression resistance and fireproof performance.

Description

Technical Field

[0001] This utility model relates to the field of fireproof cables, and in particular to a steel strip corrugated fireproof cable. Background Technology

[0002] Fire-resistant cables can control flames within a limited area, and residual flames can self-extinguish within a limited time, preventing the fire from spreading and causing greater damage. Some fire-resistant cables can even continue to operate for a period of time in a fire. However, some fire-resistant cables have relatively simple protection and insufficient compressive strength, making the fire-resistant parts easily damaged when the cable is compressed in a fire, thus affecting the cable's overall fire resistance. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a steel strip corrugated fireproof cable that offers multi-layer protection, making the fireproof parts less susceptible to damage and improving both compressive strength and fire resistance.

[0004] The technical solution of this utility model is as follows:

[0005] A steel-reinforced corrugated fireproof cable comprises, from the inside out, a conductor, a filling layer, a fiberglass layer, a flame-retardant coating, and a sheath layer; the conductor comprises, from the inside out, a conductor, a shielding layer, and an insulation layer; and the sheath layer comprises a corrugated steel sheath and an outer sheath.

[0006] In a further technical solution, a water-blocking layer is provided between the filling layer and the glass fiber layer.

[0007] In a further technical solution, the outer sheath includes two layers, an inner and an outer layer, including a first outer layer and a second outer layer disposed inside the first outer layer. The first outer layer is made of polyolefin material, and the second outer layer is made of ceramicized silicone rubber material.

[0008] In a further technical solution, a steel wire is embedded between the first jacket and the second jacket.

[0009] In a further technical solution, the insulating layer is made of ceramicized silicone rubber.

[0010] In a further technical solution, the water-blocking layer is a water-blocking tape containing water-blocking powder wrapped around it.

[0011] The beneficial effects of this utility model are:

[0012] 1. A fiberglass layer and a flame-retardant coating are set between the filler layer and the sheath layer. Fiberglass has excellent high-temperature resistance and can remain stable at high temperatures. It will not burn or release toxic gases. Together with the flame-retardant coating, it inhibits the spread of flames. The sheath layer includes a corrugated steel sheath, which improves the compressive strength of the cable. In a fire, the fireproof part of the cable is not easily damaged by pressure. The multi-layer protection improves the fire resistance of the cable itself.

[0013] 2. The water-blocking layer not only wraps around the filler layer but also provides waterproofing, offering good waterproof performance;

[0014] 3. The outer sheath adopts a double layer, which further improves the protection effect of the cable. The first jacket, made of polyolefin material, does not release halogen-containing gases when burning and has a low smoke concentration. The second jacket, made of ceramicized silicone rubber, will produce a hard ceramicized shell after burning. This shell will neither melt nor drip in a fire, and can maintain the integrity of the line for a long time.

[0015] 4. A steel wire is embedded between the first and second jackets to improve the tensile strength of the cable. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of a steel strip corrugated fireproof cable according to an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Conductor; 2. Shielding layer; 3. Insulation layer; 4. Filler layer; 5. Fiberglass layer; 6. Flame-retardant coating; 7. Corrugated steel sheath; 8. Second outer jacket; 9. First outer jacket; 10. Water-blocking layer; 11. Steel wire. Detailed Implementation

[0019] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0020] Example:

[0021] like Figure 1 As shown, a steel-reinforced corrugated fireproof cable comprises, from the inside out, a conductor core, a filler layer 4, a fiberglass layer 5, a flame-retardant coating 6, and a sheath layer; the conductor core comprises, from the inside out, a conductor 1, a shielding layer 2, and an insulation layer 3, the insulation layer 3 being made of ceramicized silicone rubber; the sheath layer comprises a corrugated steel sheath 7 and an outer sheath, the outer sheath comprising two layers, including a first outer sheath 9 and a second outer sheath 8 disposed inside the first outer sheath 9, the first outer sheath 9 being made of polyolefin material, and the second outer sheath 8 being made of ceramicized silicone rubber material; the corrugated steel sheath 7 is made of galvanized steel strip corrugated to form a continuous corrugated structure.

[0022] The working principle of the above technical solution is as follows:

[0023] A fiberglass layer 5 and a flame-retardant coating 6 are placed between the filler layer 4 and the sheath layer. Fiberglass has excellent high-temperature resistance and can remain stable at high temperatures without burning or releasing toxic gases. Together with the flame-retardant coating 6, it inhibits the spread of flames. The sheath layer includes a corrugated steel sheath 7, which improves the cable's compressive strength. In a fire, the fire-resistant parts of the cable are less likely to be damaged by pressure. The multi-layer protection improves the cable's fire resistance. The outer sheath is double-layered, further improving the cable's protective effect. The first outer sheath 9, made of polyolefin, does not release halogen-containing gases when burning and has a low smoke concentration. The second outer sheath 8, made of ceramicized silicone rubber, produces a hard ceramicized shell after burning. This shell neither melts nor drips in a fire and can maintain the integrity of the line for a long time.

[0024] In another embodiment, such as Figure 1 As shown, a water-blocking layer 10 is provided between the filling layer 4 and the glass fiber layer 5. The water-blocking layer 10 is a water-blocking tape containing water-blocking powder wrapped around it.

[0025] The water-blocking layer 10 wraps around the filling layer 4 while also providing waterproofing, thus offering good waterproofing performance.

[0026] In another embodiment, such as Figure 1 As shown, a steel wire 11 is embedded between the first outer jacket 9 and the second outer jacket 8.

[0027] It improves the tensile strength of the cable.

[0028] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A steel strip corrugated fireproof cable, characterized in that, From the inside out, it includes a wire core, a filling layer, a glass fiber layer, a flame-retardant coating, and a sheath layer; the wire core includes a conductor, a shielding layer, and an insulation layer from the inside out; the sheath layer includes a corrugated steel sheath and an outer sheath; the outer sheath includes two layers, including a first outer sheath and a second outer sheath located inside the first outer sheath; the first outer sheath is made of polyolefin material, and the second outer sheath is made of ceramicized silicone rubber material; a steel wire is embedded between the first outer sheath and the second outer sheath.

2. The steel strip corrugated fireproof cable according to claim 1, characterized in that, A water-blocking layer is provided between the filler layer and the glass fiber layer.

3. The steel strip corrugated fireproof cable according to claim 1, characterized in that, The insulating layer is made of ceramicized silicone rubber.

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