CN218676559U - Fire-fighting flame-retardant cable - Google Patents

Abstract

The utility model relates to the technical field of cables, a fire control flame retarded cable is disclosed, including restrictive coating, fire-retardant layer and cable core, the cable core is formed by many conductor wires transposition, and the conductor wire includes sinle silk and development insulating layer, and development insulating layer cladding is in the outside of sinle silk, and restrictive coating and fire-retardant layer are by outer to interior cladding in proper order in the outside of cable core, and fire-retardant layer is made by ceramic silicon rubber materials. The flame-retardant layer made of the ceramic silicon rubber material can form a ceramic shell with certain mechanical strength after being burnt by high temperature or flame, flame delay is isolated, and the circuit can be protected to normally run within a certain time. The sheath layer plays a role in protection under normal conditions. The sinle silk of conductor wire is by the coating of development insulating layer, can utilize the instrument to carry out the formation of image and show, can judge whether ageing damage or melt the deformation of inside conductor wire insulating layer, in time gets rid of the potential safety hazard, guarantees the safe operation of power consumption.

Description

Fire-fighting flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a fire control flame retarded cable.

Background

The flame-retardant cable has the characteristic of delaying flame from spreading along the cable so as not to cause fire to expand, is widely applied to high-temperature environments in high-rise buildings, subways, power plants, nuclear power stations and the like, can avoid ignition and delay combustion when a fire breaks out, ensures smoothness of electric power and communication within a certain time, is favorable for timely rescue, reduces loss and avoids serious disasters.

Although the flame-retardant cable can effectively block fire, the application place of the flame-retardant cable is relatively complex and generally in a high-temperature environment, the aging or melting deformation of materials is accelerated in the high-temperature environment, the service life of the cable in the high-temperature environment is seriously influenced, and therefore, how to ensure the normal operation of the flame-retardant cable is also an important problem.

Conventional flame retarded cable outside is wrapping up special fire prevention flame retardant coating, and long service life is different under high temperature environment because the performance of different materials, the ageing damage of insulating layer or the melting deformation of its inside conductor wire are unable audio-visual judgement out, can't overhaul the prevention, when the ageing damage of insulating layer or melting deformation, lead to different conductors to contact each other easily and take place the short circuit phenomenon, influence power consumption safety.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: the fire-fighting flame-retardant cable is convenient to overhaul and is fireproof and flame-retardant.

In order to achieve the purpose, the utility model provides a fire control flame retarded cable, including restrictive coating, fire-retardant layer and cable core, the cable core is formed by many conductor wires transposition, the conductor wire includes sinle silk and development insulating layer, the development insulating layer cladding in the outside of sinle silk, the restrictive coating with fire-retardant layer from outer to interior cladding in proper order in the outside of cable core, fire-retardant layer is made by ceramic silicon rubber materials.

As a preferred technical solution, the developing insulation layer is made of barium sulfate silicon rubber material or barium carbonate silicon rubber material.

As a preferred technical scheme, a filler is arranged in a gap between the flame-retardant layer and the cable core.

As a preferred technical scheme, the radial width of the cable core is smaller than that of the filling body.

As a preferable technical scheme, the filling body is made of alkali-free glass fiber rope materials.

As a preferred technical scheme, a winding layer is arranged between the filling body and the flame-retardant layer.

As the preferred technical scheme, the winding layer is made of rock wool.

As a preferred technical scheme, the winding layer is in a cross winding structure.

As a preferred technical scheme, the sheath layer is made of low-smoke halogen-free polyolefin material.

The utility model provides a pair of fire control flame retarded cable compares with prior art, and its beneficial effect lies in: and the cable core formed by twisting a plurality of conductive wires is coated by the flame-retardant layer, and the plurality of conductive wires are subjected to fire prevention and flame retardance at the same time. The flame-retardant layer has the same flexibility and elasticity as common rubber under the normal operation condition, when a fire disaster occurs, the ceramic silicon rubber material is used for preparing the flame-retardant layer, and the flame-retardant layer can form a ceramic shell with certain mechanical strength after being burnt by high temperature or flame, can resist thousands of high temperatures, isolates flame from delaying combustion, and can normally operate a protection circuit within a certain time. The sheath layer plays a role in protection under normal conditions, and the flame-retardant layer is prevented from being worn. The sinle silk of conductor wire by the development insulating layer cladding, after the cable used certain time in high temperature environment, can adopt image inspection (X-ray) instrument to carry out the formation of image and show, the development insulating layer is high bright development by the formation of image, can judge whether inside conductor wire insulating layer is ageing damaged or melt the deformation, in time replaces the cable that has the potential safety hazard, and this cable is the higher large-scale cable of cost, utilizes the image to detect in time and gets rid of the cable that has the hidden danger, guarantees safe operation and need not regular big replacement cable in batches, reduces the maintenance cost of equipment.

Drawings

Fig. 1 is a schematic sectional structure view of a fire-fighting flame retardant cable according to an embodiment of the present invention.

Fig. 2 is a perspective view of the fire-fighting flame retardant cable according to the embodiment of the present invention.

In the figure: 1. a sheath layer; 2. a flame retardant layer; 3. a wire core; 4. developing the insulating layer; 5. a filler; 6. and (4) winding the layers.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms used in the present invention are used in the description of the present invention, and it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like used in the present invention are used as the terms of the directions or positional relationships shown in the drawings, and are used only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be interpreted as a limitation of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the utility model discloses a fire control flame retarded cable of preferred embodiment, including restrictive coating 1, fire-retardant layer 2 and cable core, the cable core is formed by many conductor wires transposition, the conductor wire includes sinle silk 3 and development insulating layer 4, development insulating layer 4 cladding in the outside of sinle silk 3, restrictive coating 1 with fire-retardant layer 2 from outer to interior cladding in proper order in the outside of cable core, fire-retardant layer 2 is made by ceramic silicon rubber materials.

Based on the technical scheme, the cable core formed by twisting the plurality of conducting wires is coated by the flame-retardant layer 2, and meanwhile, the plurality of conducting wires are subjected to fire prevention and flame retardance. The flame-retardant layer 2 has the same flexibility and elasticity as common rubber under the normal operation condition, when a fire disaster occurs, the flame-retardant layer 2 made of ceramic silicon rubber material can form a ceramic shell with certain mechanical strength after being burnt by high temperature or flame, can resist thousands of high temperature, and can isolate flame from delaying combustion. Sheath layer 1 plays the guard action under normal conditions, avoids fire-retardant layer 2 takes place wearing and tearing. The sinle silk 3 of conductor wire by 4 cladding of development insulating layer, after the cable used certain time in high temperature environment, can adopt image inspection (X-ray) instrument to carry out the formation of image and show, development insulating layer 4 is high bright development by the formation of image, can judge whether inside conductor wire insulating layer is ageing damaged or melt the deformation, in time replace the cable that has the potential safety hazard, this cable is the higher large-scale cable of cost, utilizes the image to detect in time and gets rid of the cable that has the hidden danger, guarantees safe operation and need not regular big replacement cable in batches, reduces the maintenance cost of equipment. The extrusion molding process of the ceramic silicone rubber is the prior art, and can be applied to fire-proof places after national standard experiments, and is not described herein again.

In the present embodiment, the development insulating layer 4 is made of a barium sulfate silicone rubber material or a barium carbonate silicone rubber material. The barium sulfate silicon rubber material or barium carbonate silicon rubber material has the basic characteristics of silicon rubber, has good weather resistance and good insulating property, and is used for isolating different conductors. That is, the developing agent (barium sulfate or barium carbonate) is directly added into the silicone rubber to be used as the developing insulating layer 4, and no new production equipment is required to be added. When the examination and repair are needed, because the barium sulfate silicone rubber or the barium carbonate silicone rubber can be imaged as highlight development under X-ray, when the damage or deformation of the imaged conducting wire is found out from a detection instrument, the potential safety hazard of the cable can be judged, the cable cannot continuously and normally run under a high-temperature environment, and a new cable needs to be replaced, so that the electricity utilization safety is ensured. In addition, in order to further enhance the flame retardant performance, the barium sulfate silicone rubber material or barium carbonate silicone rubber material of part of important cables can also be subjected to ceramic treatment, so that the normal running time of the cable in a fire disaster is prolonged.

In this embodiment, a gap between the flame-retardant layer 2 and the cable core is provided with a filler 5, and the filler 5 isolates the flame-retardant layer 2 from the cable core. The radial width of the cable core is smaller than that of the filling bodies 5, namely the filling bodies 5 are arranged on the outer sides of the conducting wires for isolation, so that the time of influence of high temperature on the conducting wires can be delayed when a fire disaster happens. The filling body 5 is made of alkali-free glass fiber rope materials, the alkali-free glass fiber rope materials fill the gap along the length direction, the alkali-free glass fiber rope materials are good in chemical stability, heat resistance and insulativity, non-toxic and harmless, the heat-resistant temperature can reach over 1000 ℃, the high tensile strength is achieved, the overall tensile strength of the cable can be guaranteed, the cable cannot be easily broken when being subjected to external pressure, and the quality of the cable is guaranteed.

In this embodiment, as shown in fig. 2, a winding layer 6 is disposed between the filler 5 and the flame retardant layer 2, and the winding layer 6 shapes the filler 5 to ensure that the filler 5 can isolate the cable core. The winding layer 6 is of a cross winding structure, namely, the winding layer is wound in a cross mode along the 45-degree direction, and the tight attaching and shaping are achieved. Further, the winding layer 6 is made by the rock wool rope, and the rock wool rope is refractory material, can effectual prevention burning, weakens the intensity of a fire and spreads.

In this embodiment, restrictive coating 1 is made by low smoke and zero halogen polyolefin material, uses as the protective sheath under normal condition, when meetting the conflagration burning, and the low smoke does not also produce poisonous and harmful gas, and produced gas can not cause the injury to the personnel, strives for the time for the fire rescue.

To sum up, the utility model provides a pair of fire control flame retarded cable mainly has following advantage: (1) The flame-retardant layer 2 is made of ceramic silicon rubber materials, and can be hardened into a ceramic shell when a fire disaster occurs, so that flame is isolated and delayed combustion is achieved, and the flame-retardant effect is achieved. (2) The conductor core 3 of the conductor wire is coated by the developing insulating layer 4, after the conductor wire is used for a certain time in a high-temperature environment, an image inspection (X-ray) instrument can be adopted for image display, whether the insulating layer inside is aged, damaged or melted and deformed is inspected, hidden dangers are timely eliminated, and the maintenance cost of equipment is reduced. (3) Use the rock wool rope right obturator 5 twines the design, ensures obturator 5 can play isolated effect to the cable core.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a fire control flame retarded cable, its characterized in that, includes restrictive coating, fire-retardant layer and cable core, the cable core is formed by many conductor wires transposition, the conductor wire includes sinle silk and development insulating layer, the development insulating layer cladding in the outside of sinle silk, the restrictive coating with fire-retardant layer from outer to interior cladding in proper order in the outside of cable core, fire-retardant layer is made by ceramic silicon rubber materials.

2. A fire fighting fire retardant cable as defined in claim 1, wherein said developed insulation layer is made of barium sulfate silicone rubber material or barium carbonate silicone rubber material.

3. A fire fighting flame retardant cable as defined in claim 1, wherein a filler is provided in the gap between the flame retardant layer and the cable core.

4. A fire fighting flame retardant cable as defined in claim 3, wherein the radial width of said core is less than the radial width of said filling body.

5. A fire fighting flame retardant cable as defined in claim 3, wherein said filler body is made of alkali-free fiberglass rope material.

6. A fire fighting fire retardant cable as defined in claim 5, wherein a wrapping layer is provided between the filler body and the fire retardant layer.

7. A fire fighting fire retardant cable as defined in claim 6, wherein said wrapping is made of rock wool.

8. A fire fighting fire retardant cable as defined in claim 7, wherein said wrapped layer is a cross-wrap configuration.

9. A fire fighting flame retardant cable according to any of claims 1 to 8, wherein said sheath layer is made of a low smoke zero halogen polyolefin material.

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