CN212934227U - Armored isolation flexible fireproof cable - Google Patents

Abstract

The utility model provides a flexible fireproof cable is kept apart to armor, includes a plurality of conductors, and every conductor outsourcing is equipped with flame retardant coating and insulating layer formation insulation core, and a plurality of insulation core are whole to be taken through high fire-retardant winding around the package stranding outward, are equipped with the filling layer between insulation core and the high fire-retardant area, high fire-retardant outburst is equipped with fire prevention mud and separates the oxygen layer, fire prevention mud separates oxygen layer outsourcing and is equipped with the armor, the armor outsourcing is equipped with the outer jacket. The utility model discloses following beneficial effect has: (1) the fire-proof mud is armored immediately after being extruded out, and plays a good role in protection in subsequent processing, transportation, installation and use; (2) the armor layer is wrapped in a double-layer stainless steel band gap type manner, so that space is reserved for expansion of the fireproof mud, the fireproof mud can be more compact under the constraint of a steel band after expansion, the oxygen-isolating effect of the fireproof mud can be better exerted, and the fireproof effect is greatly improved; (3) the aluminum alloy conductor greatly reduces the weight of the cable and avoids the fire-proof mud from being extruded and deformed by the dead weight of the cable core; (4) meets the requirement of GB/T12706-.

Description

Armored isolation flexible fireproof cable

Technical Field

The utility model relates to a cable especially relates to a flexible fireproof cable is kept apart to armor.

Background

The cable products undertake the transmission task of important data, image and other information in the building, engineering safety system, the fire-proof cable can still keep the integrality of the circuit when the fire hazard happens, there is enough time to return all data to the cage before the whole network is paralyzed, the normal use of channel lighting, emergency broadcasting, fire-proof alarm device, automatic fire-fighting facilities and other emergency equipment, make personnel evacuate in time. The flexible fireproof cable with the fireproof mud extruded outside the wire core can play a good fireproof role, but the fireproof mud is in a soft state in production, so that eccentricity is easily caused in the subsequent processing process; and the mechanical strength of the cable is insufficient, if the line is subjected to other external mechanical force when a fire disaster occurs, if an explosion occurs, an object has strong impact on the cable, and if the cable does not have a metal sheath or metal with insufficient rigidity, the insulation is likely to be damaged and then short-circuited.

For example, a "novel flame-retardant fire-resistant power communication composite cable" disclosed in chinese patent literature, whose publication No. CN207097479U includes a communication optical fiber unit and a stranded copper conductor, the communication optical fiber unit is worn and applied in an aluminum alloy corrugated hose, a mica tape is wrapped on the stranded copper conductor, an insulating layer is extruded on the mica tape to form an insulating wire core, the insulating wire core is cabled around the aluminum alloy corrugated hose, a fire-proof mud is extruded on the insulating wire core and the aluminum alloy corrugated hose, a flame-retardant band is wrapped outside the fire-proof mud, an armor layer is longitudinally wrapped outside the flame-retardant band and welded with argon arc, and an outer sheath is extruded on the armor layer. This utility model provides a fire-retardant fire resisting cable, but fire prevention mud does not directly carry out the armor outward, and anti mechanical impact performance receives the influence, and copper conductor weight is big, easily leads to fire prevention mud to receive the dead weight and influences extrusion deformation.

Disclosure of Invention

The utility model relates to an it is not enough to overcome prior art's fireproof cable mechanical strength, and the cable easily produces eccentric problem, provides a flexible fireproof cable is kept apart to the armor, when guaranteeing fire behavior, improves the mechanical properties of cable, avoids appearing eccentric problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a flexible fireproof cable is kept apart to armor, includes a plurality of conductors, and every conductor outsourcing is equipped with flame retardant coating and insulating layer formation insulation core, and a plurality of insulation core are whole to be taken through high fire-retardant winding around the package stranding outward, are equipped with the filling layer between insulation core and the high fire-retardant area, high fire-retardant outburst is equipped with fire prevention mud and separates the oxygen layer, fire prevention mud separates oxygen layer outsourcing and is equipped with the armor, the armor outsourcing is equipped with the outer jacket.

The utility model is characterized in that the armor is immediately carried out after the fireproof mud oxygen-isolating layer is extruded, thereby playing a good role in protection in subsequent processing, transportation, installation and use, avoiding the problems of eccentricity and the like of the fireproof mud in the subsequent process, and simultaneously ensuring that the cable has good torsion, mechanical tension and anti-interference performance; the fire prevention mud can be more closely knit under the constraint of armor after the thermal expansion, and fire prevention mud separates the oxygen effect and can obtain better performance, improves fire prevention effect greatly. Wrap up the flame retardant coating outside the conductor, make the cable have good fire resistance, acid and alkali resistance characteristic, the insulating layer makes the cable have stable insulating properties, and the mineral is filled the rope in the filling layer, and outmost outer jacket setting promotes fire-retardant burning performance, can make the cable meet the burning when fire and be restrained greatly.

Preferably, the armor layer is wrapped and armored by double layers of stainless steel belts.

The double-layer stainless steel tape wrapping armor is added outside the cable core, so that the mechanical performance of the cable is improved, and the steel tape also has certain fireproof characteristic.

Preferably, the fire-resistant layer is wrapped by two layers of mica tapes in an overlapping manner.

The fire-proof mud has certain expansion when being heated, so the clearance type wrapping is adopted, and a space is reserved for the expansion of the fire-proof mud.

Preferably, the conductor is a round compacted stranded aluminum alloy conductor.

The conductor adopts 8000 series aluminum alloy requirements meeting the ASTM B800-2005 standard, so that the weight of the cable is greatly reduced, the cable core dead weight extrusion deformation of the fireproof mud can be effectively reduced, and the use of noble metal copper is reduced.

Preferably, the fire-resistant layer is formed by wrapping a phlogopite tape.

The cable fire-resistant layer adopts the auro-mica tape without halogen elements, has good fire resistance, acid and alkali resistance, corona resistance and radiation resistance, and has good flexibility and tensile strength.

Preferably, the insulating layer is a crosslinked polyethylene insulating layer.

Preferably, the outer protective layer is made of low-smoke halogen-free flame-retardant polyolefin sheath material.

The outer jacket can block outside flame and oxygen and get into inside the cable, further improves the utility model discloses the fire prevention of cable, fire-resistant, fire behaviour accord with the environmental protection requirement more.

Therefore, the utility model discloses following beneficial effect has: (1) the fire-proof mud is armored immediately after being extruded out, and plays a good role in protection in subsequent processing, transportation, installation and use; (2) the armor layer is wrapped in a double-layer stainless steel band gap type manner, so that space is reserved for expansion of the fireproof mud, the fireproof mud can be more compact under the constraint of a steel band after expansion, the oxygen-isolating effect of the fireproof mud can be better exerted, and the fireproof effect is greatly improved; (3) the aluminum alloy conductor greatly reduces the weight of the cable and avoids the fire-proof mud from being extruded and deformed by the dead weight of the cable core; (4) meets the requirement of GB/T12706-.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. conductor, 2, flame retardant coating, 3, insulating layer, 4, filling layer, 5, high flame retardant tape, 6, fire clay oxygen barrier, 7, armor, 8 and outer jacket.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Examples

In the embodiment shown in fig. 1, an armored and isolated flexible fireproof cable is a multi-core structure, and includes a plurality of conductors 1, a fire-resistant layer 2, an insulating layer 3, a filling layer 4, a high fire-resistant tape 5, a fire-resistant mud oxygen-barrier layer 6, an armor layer 7, and an outer protective layer 8.

Each conductor 1 is sequentially wrapped with a fire-resistant layer 2 and an insulating layer 3 to form an insulating wire core, the fire-resistant layer 2 is wrapped with a phlogopite tape, the insulating layer 3 is made of a crosslinked polyethylene insulating material, a plurality of insulating wire cores are wrapped with high flame-retardant tapes 5 to form cables, a filling layer 4 is arranged between each insulating wire core and each high flame-retardant tape 5, and each filling layer 4 is filled with an inorganic mineral paper rope; the high flame-retardant belt 5 is externally extruded with a fireproof mud oxygen-isolating layer 6, the fireproof mud oxygen-isolating layer 6 is externally wrapped with a CPP belt to prevent the fireproof mud from volatilizing, a glass fiber belt is wrapped outside to form a smooth surface, double-layer stainless steel belt wrapping armoring is directly carried out outside, and an armor layer 7 is formed by adopting intermittent wrapping; the armor layer 7 is externally wrapped with an outer protective layer 8 and a low-smoke halogen-free flame-retardant polyolefin outer protective sleeve.

The fire-proof mud is armored immediately after being extruded out, and plays a good role in protection in subsequent processing, transportation, installation and use; the use of noble metal copper is reduced, and the mechanical property of the copper is enhanced; the conductor is made of aluminum alloy, so that the weight of the cable is greatly reduced; the fire prevention mud can be compacter under the constraint of steel band after the inflation, and fire prevention mud separates the oxygen effect and can obtain better performance, improves fire prevention effect greatly.

The utility model discloses the performance index reaches following requirement:

1) the conductor adopts 8000 series aluminum alloy requirements meeting the ASTM B800-2005 standard;

2) the direct current resistance of the conductor meets the requirements of GB/T3956-;

3) meets the requirement of GB/T12706-.

Claims (7)

1. The utility model provides a flexible fireproof cable is kept apart to armor, includes a plurality of conductors (1), characterized by, every conductor (1) outsourcing is equipped with flame retardant coating (2) and insulating layer (3) and forms insulating core, and a plurality of insulating core are whole external to be taken (5) through high fire-retardant winding around the package stranding, are equipped with between insulating core and high fire-retardant area (5) filling layer (4), high fire-retardant area (5) outsourcing is equipped with fire prevention mud and separates oxygen layer (6), fire prevention mud separates oxygen layer (6) outsourcing and is equipped with armor (7), armor (7) outsourcing is equipped with outer jacket (8).

2. An armored insulated flexible fire-resistant cable according to claim 1, wherein the armor layer (7) is armored with a double stainless steel tape wrapping.

3. An armored insulated flexible fire-resistant cable according to claim 1, wherein the armor (7) is a gap-type wrapping.

4. An armored insulated flexible fire-resistant cable according to claim 1, 2 or 3, wherein the conductor (1) is a round compacted stranded aluminum alloy conductor.

5. An armored insulated flexible fire-resistant cable according to claim 1, 2 or 3, wherein the fire-resistant layer (2) is wrapped with a phlogopite tape.

6. An armored insulated flexible fire-resistant cable according to claim 1, 2 or 3, wherein the insulating layer (3) is a crosslinked polyethylene insulating layer.

7. An armored insulated flexible fireproof cable according to claim 1, 2 or 3, wherein the outer sheath (8) is made of low smoke halogen-free flame retardant polyolefin sheath material.

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