CN210925531U

CN210925531U - High heat dispersion fireproof cable

Info

Publication number: CN210925531U
Application number: CN201922143235.7U
Authority: CN
Inventors: 杨南彦
Original assignee: Guangzhou Aotong Wire And Cable Co ltd
Current assignee: Guangzhou Aotong Wire And Cable Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-07-03
Anticipated expiration: 2029-12-03

Abstract

The utility model provides a pair of high heat dispersion fireproof cable, the cable core comprises a cable core, the cable core is formed by the transposition of insulation core, and insulation core includes the conductor, the conductor wraps up outward has the insulating layer, predetermined quantity clearance between the insulation core is equipped with a filling layer, set up fire extinguishing layer, the fire retardant coating of inlayer, flame retardant coating and outer fire retardant coating outside the filling layer and make this fireproof cable have good heat-resisting, fire-retardant, the characteristics of putting out a fire, carry out multiple protection to the cable core, avoid the conductor in the cable core to be burnt out. Simultaneously the interior louvre of predetermined quantity is followed the flame retardant coating circumference interval sets up and runs through this flame retardant coating, and the outer louvre of predetermined quantity runs through in proper order outer fire-retardant layer reaches the oversheath, and follow outer fire-retardant layer reaches oversheath circumference interval sets up, and the inside heat of cable dispels the heat earlier via interior louvre, and the heat further carries out the outdiffusion through outer louvre simultaneously, has improved this fireproof cable's thermal diffusivity, has reduced the potential safety hazard.

Description

High heat dispersion fireproof cable

Technical Field

The utility model relates to a wire and cable technical field especially relates to a high heat dispersion fireproof cable.

Background

In recent years, in order to improve the safety level of an electric circuit and reduce the occurrence and loss of electric fire accidents, the national ministry of construction, the public security department and some local governments have successively issued some electric design specifications and clearly stipulate that a high-heat-dissipation-performance fireproof cable must be adopted in some important electric circuits and places, so that the application range of the high-heat-dissipation-performance fireproof cable is further widened.

The existing common fireproof cable only has one fireproof insulating layer, and the fireproof efficiency is limited. Moreover, when the ordinary fireproof cable is used for a long time, a certain amount of heat can be generated, and due to the fact that no heat dissipation mechanism is arranged, after the ordinary fireproof cable is used for a long time, not only can the transmission efficiency of cable information be influenced, but also fire disasters can possibly occur.

2017, 05 and 04, a chinese utility model patent with application number CN201720483540.9 discloses a novel wear-resistant cable, which comprises a cable core stranded by a plurality of insulation core wires and forming a cable the periphery of cable core has an inner protective housing around the package the outside of inner protective housing has an insulating layer the outside of insulating layer has a PVC protective layer around the package evenly be provided with a plurality of cyclic annular concave lines along length direction on the surface of PVC protective layer, and then evenly coated has a nano ceramic resin hardening layer in the cyclic annular concave line. The utility model discloses a let high rigidity, wear-resisting inorganic ceramic resin of nanometer in cable outside interval cyclization, can prevent effectively that the cable from taking place further wearing and tearing pulling the in-process to because inorganic ceramic resin of nanometer is through forming the ring at the cable surface solidification, production technology is more simple, can not influence the bending, the winding of cable, but its fire behavior is relatively poor does not contain the setting of radiating module simultaneously yet, leads to easy high temperature.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high heat dispersion fireproof cable with good fire behavior and high heat dispersion.

The utility model provides a high heat dispersion fireproof cable, includes the cable core, the cable core is formed by the transposition of predetermined number's insulation core, insulation core includes the conductor, the conductor wraps up outward has an insulating layer, predetermined number clearance between the insulation core is equipped with a filling layer, be equipped with an isolation layer, a fire extinguishing layer, an inlayer fire-retardant layer, a flame retardant coating, an outer fire-retardant layer and an oversheath outside the filling layer in proper order, the flame retardant coating with be formed with a cavity between the outer fire-retardant layer, the cavity is provided with an elastic substance along its circumference predetermined interval, and wherein, predetermined number's interior louvre is followed this flame retardant coating is set up and run through in flame retardant coating circumference interval, and predetermined number's outer heat dissipation hole runs through in proper order outer fire-retardant layer reaches the oversheath, and follow outer fire-retardant layer reaches oversheath circumference interval sets up.

Preferably, the inner heat dissipation hole and the outer heat dissipation hole are filled with fireproof and breathable materials, and waterproof and breathable films are arranged at the ends, far away from the cable core, of the inner heat dissipation hole and the outer heat dissipation hole.

Preferably, the insulating layer is a ceramic low-smoke halogen-free polyolefin insulating layer and serves as an insulating material between conductors.

Preferably, the filling layer is a halogen-free flame-retardant filling layer, so that the roundness of the cable is ensured, and a certain flame-retardant effect can be achieved.

Preferably, the inner isolation layer is one of an aluminum alloy pipe isolation layer or an aluminum pipe isolation layer. Aluminium alloy pipe isolation layer or aluminium pipe isolation layer melting point is high, has fine fire behavior, when the conflagration breaing out, can keep apart insulating sinle silk and flame, plays the fixed action to the filling layer of inlayer moreover, has improved antidetonation, the compressive property of cable, avoids because of vibrations and the damage that strikes the production, keeps apart insulating sinle silk and water and vapor simultaneously, makes the cable have good waterproof performance.

Preferably, the inner flame-retardant layer and the outer flame-retardant layer are both high-flame-retardant glass fiber tape-wound claddings. The high flame-retardant glass fiber band can be decomposed into metal oxides and separated out crystal water at a certain temperature, so that the effects of adsorbing smoke, settling smoke particles, absorbing heat and blocking the flow of oxygen and combustible gas are achieved, and further the further combustion of the cable can be prevented.

Preferably, the elastic substance is one of thermoplastic polyurethane elastic spheres or springs. So that the cable has good pressure resistance.

Preferably, the fireproof layer is made of fireproof materials containing magnetic powder, magnesium oxide and ceramics. Has excellent fireproof performance.

Preferably, the fire extinguishing layer comprises an inner fire-resistant film and an outer fire-resistant film, the inner fire-resistant film and the outer fire-resistant film are separated into a plurality of cavities arranged in an array through a preset number of diaphragms, and the cavities are filled with fire extinguishing agents. The fire extinguishing agent in the fire extinguishing layer can achieve the fire extinguishing and flame retarding effects, and the cable core is prevented from being damaged.

Preferably, the outer sheath is a cross-linked polyolefin outer sheath.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a high heat dispersion fireproof cable makes this fireproof cable have good heat-resisting, fire-retardant, the characteristics of preventing fires, putting out a fire through setting up fire-extinguishing layer, the fire-retardant layer of inlayer, flame retardant coating and outer fire-retardant layer, carries out multiple protection to the cable core, avoids the conductor in the cable core to be burnt out. Simultaneously the interior louvre of predetermined quantity is followed the flame retardant coating circumference interval sets up and runs through this flame retardant coating, and the outer louvre of predetermined quantity runs through in proper order outer fire-retardant layer reaches the oversheath, and follow outer fire-retardant layer reaches oversheath circumference interval sets up, and the inside heat of cable dispels the heat earlier via interior louvre, and the heat further carries out the outdiffusion through outer louvre simultaneously, has improved this fireproof cable's thermal diffusivity, has reduced the potential safety hazard. Therefore, the fireproof cable can endure 3 hours at the high temperature of 850 ℃ by setting fireproof and heat dissipation, and has good high-temperature working performance.

Drawings

Fig. 1 is the utility model provides a high heat dispersion fireproof cable structure schematic diagram.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the fireproof cable with high heat dissipation performance comprises a cable core 1, wherein the cable core 1 is formed by stranding a predetermined number of insulation wire cores 11, and in this embodiment, the number of the insulation wire cores 11 is 4. The insulated wire core 11 comprises a conductor 111, an insulating layer 112 wraps the conductor 111, a predetermined number of gaps between the insulated wire cores 11 are provided with a filling layer 13, and an isolation layer 2, a fire extinguishing layer 3, an inner flame retardant layer 4, a fire retardant layer 5, an outer flame retardant layer 6 and an outer sheath 7 are sequentially arranged outside the filling layer 13.

In this embodiment, a cavity 8 is formed between the fire-retardant layer 5 and the outer fire-retardant layer 6, an elastic substance 9 is disposed in the cavity 8 at a predetermined interval along the circumference thereof, and the elastic substance 9 is one of a thermoplastic polyurethane elastic sphere or a spring. In-process such as cable transportation, the cable pressurized leads to inside cable core 1 to be destroyed easily, and this fireproof cable sets up this elastic substance 9 and makes the cable have good compressive property, and inside cable core 1 has obtained good protection.

This high heat dispersion fireproof cable makes to have good heat dispersion through setting up the interior louvre 10 of predetermined quantity and the outer louvre 20 of predetermined quantity, interior louvre 10 is followed 5 circumference intervals of flame retardant coating set up and run through this flame retardant coating 5, outer louvre 20 runs through in proper order outer fire retardant coating 6 reaches oversheath 7, and follows outer fire retardant coating 6 reaches oversheath 7 circumference intervals sets up. The inside heat of cable dispels the heat via interior louvre 10 earlier, and the heat looses 8 departments of cavity, and the heat of 8 departments of cavity further carries out the outdiffusion through outer radiating hole 20 simultaneously, has improved this fireproof cable's thermal diffusivity, has reduced the potential safety hazard. Preferably, fireproof and breathable materials are filled in the inner heat dissipation hole 10 and the outer heat dissipation hole 20, so that heat can be dissipated from the inner heat dissipation hole 10 and the outer heat dissipation hole 20, and the fireproof performance is good. And the ends of the inner heat dissipation hole 10 and the outer heat dissipation hole 20, which are far away from the cable core 1, are provided with waterproof breathable films, and the arrangement of the waterproof breathable films enables the heat dissipation holes to dissipate heat and have good waterproof performance. The number of the inner heat conduction holes is 4 to 8, and the outer heat conduction holes correspond to the inner heat conduction holes.

Preferably, the insulating layer 112 is a ceramic insulating layer 112 made of low smoke halogen-free polyolefin material, and serves as an insulating material between the conductors 111. The filling layer 13 is a halogen-free flame-retardant filling layer 13, so that the roundness of the cable is ensured, and a certain flame-retardant effect can be achieved. The inner isolation layer 2 is one of an aluminum alloy pipe isolation layer 2 or an aluminum pipe isolation layer 2. Aluminium alloy

pipe isolation layer

2 or 2 melting points of aluminium pipe isolation layer are high, have fine fire behavior, when the conflagration breaing out, can keep apart insulating sinle silk 11 and flame, play the fixed action to the filling layer 13 of inlayer in addition, improved antidetonation, the compressive property of cable, avoid because of vibrations and the damage that strikes the production, keep apart insulating sinle silk 11 and water and vapor simultaneously, make the cable have good waterproof performance. The inner flame-retardant layer 4 and the outer flame-retardant layer 6 are both high-flame-retardant glass fiber tape winding layers. The high flame-retardant glass fiber band can be decomposed into metal oxides and separated out crystal water at a certain temperature, so that the effects of adsorbing smoke, settling smoke particles, absorbing heat and blocking the flow of oxygen and combustible gas are achieved, and further the further combustion of the cable can be prevented. The fireproof layer 5 is made of fireproof materials containing magnetic powder, magnesium oxide and ceramics. Has excellent fireproof performance. The fire extinguishing layer 3 comprises an inner fire-resistant film and an outer fire-resistant film, the inner fire-resistant film and the outer fire-resistant film are separated into a plurality of cavities 22 arranged in an array mode through a preset number of diaphragms 21, and fire extinguishing agents are filled in the cavities 22. The fire extinguishing agent in the fire extinguishing layer 3 can play a fire extinguishing and flame retarding effect, and the cable core 1 is prevented from being damaged. The outer sheath 7 is a cross-linked polyolefin outer sheath 7 and has good wear resistance.

The utility model provides a high heat dispersion fireproof cable makes this fireproof cable have good heat-resisting, fire-retardant, the characteristics of preventing fires, putting out a fire through setting up fire-extinguishing layer 3, the fire-retardant layer 4 of inlayer, flame retardant coating 5 and outer fire-retardant layer 6, carries out multiple protection to cable core 1, avoids conductor 111 in cable core 1 to be burnt out. Simultaneously predetermined number's interior louvre 10 is followed 5 circumference intervals of flame retardant coating set up and run through this flame retardant coating 5, and predetermined number's outer louvre 20 runs through in proper order outer fire-retardant layer 6 reaches oversheath 7, and follow outer fire-retardant layer 6 reaches oversheath 7 circumference intervals set up, and the inside heat of cable dispels the heat earlier via interior louvre 10, and the heat further carries out the outdiffusion through outer louvre 20 simultaneously, has improved this fireproof cable's thermal diffusivity, has reduced the potential safety hazard. Therefore, the fireproof cable can endure 3 hours at the high temperature of 850 ℃ by setting fireproof and heat dissipation, and has good high-temperature working performance.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides a high heat dispersion fireproof cable which characterized in that: the cable comprises a cable core, the cable core is formed by the transposition of predetermined number's insulation core, insulation core includes the conductor, the conductor wraps up outward has an insulating layer, predetermined number clearance between the insulation core is equipped with a filling layer, be equipped with an isolation layer, a fire extinguishing layer, an inlayer fire-retardant layer, a flame retardant coating, an outer fire-retardant layer and an oversheath outside the filling layer in proper order, the flame retardant coating with be formed with a cavity between the outer fire-retardant layer, the cavity is provided with an elastic substance along its circumference predetermined interval, and wherein, predetermined number's interior louvre is followed this flame retardant coating is set up and run through in flame retardant coating circumference interval, and predetermined number's outer heat dissipation hole runs through in proper order outer fire-retardant layer reaches the oversheath, and follows outer fire-retardant layer reaches oversheath circumference interval sets up.

2. The high heat dissipation performance fireproof cable of claim 1, wherein the inner heat dissipation hole and the outer heat dissipation hole are both filled with fireproof and breathable materials, and waterproof and breathable films are arranged at ends of the inner heat dissipation hole and the outer heat dissipation hole, which are far away from the cable core.

3. The fireproof cable with high heat dissipation performance according to claim 1, wherein the insulating layer is a ceramic low-smoke halogen-free polyolefin insulating layer.

4. The fireproof cable with high heat dissipation performance according to claim 1, wherein the filling layer is a halogen-free flame retardant filling layer.

5. The high heat dissipation performance fireproof cable of claim 1, wherein the insulation layer is one of an aluminum alloy tube insulation layer or an aluminum tube insulation layer.

6. The high heat dissipation performance fireproof cable of claim 1, wherein the inner flame retardant layer and the outer flame retardant layer are both high flame retardant glass fiber tape-wrapped claddings.

7. The high heat dissipation performance fireproof cable of claim 1, wherein the elastic substance is one of thermoplastic polyurethane elastic spheres or springs.

8. The fireproof cable with high heat dissipation performance according to claim 1, wherein the fire extinguishing layer comprises an inner fire-resistant film and an outer fire-resistant film, the inner fire-resistant film and the outer fire-resistant film are separated into a plurality of cavities arranged in an array through a predetermined number of diaphragms, and fire extinguishing agents are filled in the cavities.

9. The high heat dissipation performance fireproof cable of claim 1, wherein the outer sheath is a cross-linked polyolefin outer sheath.