CN213905015U

CN213905015U - Heat-conducting fireproof power cable

Info

Publication number: CN213905015U
Application number: CN202023068858.1U
Authority: CN
Inventors: 蒋云强
Original assignee: Wuxi Mingtao Cable Technology Co ltd
Current assignee: Wuxi Mingtao Cable Technology Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-06
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses a heat-conducting fireproof power cable, which belongs to the technical field of power cables and comprises an outer protective layer, wherein the inner wall of the outer protective layer is provided with a black chromium coating, a copper plating layer is arranged in the black chromium coating, an insulating ceramic layer is arranged in the copper plating layer, and a filling layer is arranged in the insulating ceramic layer, because the black chromium coating can absorb the heat of a conductor, and in the absorbing process, the black chromium coating can convert and cool the heat and transmit the residual heat into a heat-absorbing rubber layer, thereby heating the heat-absorbing rubber layer, the heat-absorbing rubber layer can be in the process of entropy reduction under the heating of the black chromium coating, thereby improving the flexibility of the heat-absorbing rubber layer at the moment when radiating, effectively relieving the impact force when external objects collide, and further ensuring the service life of the cable, the heat conduction and fire-proof performance are good, and the insulating effect is ensured by arranging the insulating ceramic layer.

Description

Heat-conducting fireproof power cable

Technical Field

The utility model belongs to the technical field of power cable, specifically be a heat conduction fire prevention type power cable.

Background

Traditional cable, the insulating material of electric wire all is organic macromolecular material, easy carbomorphism under the flame condition, lose insulating effect, fire behavior is relatively poor, and the heat that produces when being difficult to the inside current circulation of cable absorbs and converts, lead to when the electric current is too big in the cable, the overheated condition will appear owing to the heat that produces when the voltage circulation in the cable, thereby lead to the cable short circuit or the condition to appear in the in-process of using, and under the high temperature condition, the cable then is difficult to use, and cause very big influence to the life of cable.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome prior art's above-mentioned defect, the utility model provides a heat conduction fire prevention type power cable, the easy carbomorphism of driven cable under the flame condition has been solved, lose insulating effect, fire behavior is relatively poor, and be difficult to absorb and the conversion to the heat that produces when the inside electric current of cable circulates, lead to when the electric current is too big in the cable, the overheated condition will appear owing to the heat that produces when the voltage flow, thereby lead to the cable short circuit or the condition to appear in the in-process that uses, and under the high temperature condition, the cable then is difficult to use, and cause very big problem to the life of cable.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a heat conduction fire prevention type power cable, includes outer inoxidizing coating, the inner wall of outer inoxidizing coating is provided with black chromium coating, be provided with the copper plate in the black chromium coating, be provided with insulating ceramic layer in the copper plate, be provided with the filling layer in the insulating ceramic layer, be provided with the glass fiber layer in the filling layer, be provided with the strengthening rib in the glass fiber layer, be provided with the fire-resistant insulation layer in the strengthening rib, be provided with the conductor in the fire-resistant insulation layer.

As a further aspect of the present invention: the conductor is made of aluminum alloy through processing, the conductor is made of three aluminum alloy wires through cross winding, and the fireproof insulating layer is set to be a mineralized mica tape layer.

As a further aspect of the present invention: the reinforcing rib is set as a silica gel reinforcing rib, the glass fiber layer is woven by glass fiber ropes, the woven shape is set to be net-shaped, and the thickness of the glass fiber layer is 1-2 mm.

As a further aspect of the present invention: the thickness of the filling layer is half of that of the conductor, and the outer protective layer is arranged to be a heat absorption rubber layer.

As a further aspect of the present invention: the black chromium coating has an absorption ratio alpha of 0.93-0.96, a thermal emission ratio epsilon of 0.08-0.15 and a ratio of alpha to epsilon of 6-12, is electroplated on the surface of the filling layer, and is set to be a honeycomb type mesh structure.

As a further aspect of the present invention: the copper plating layer is attached to the surface of the black chromium coating, and the surface of the copper plating layer needs to be processed by plating bright nickel.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. this heat conduction fire prevention type power cable, through setting up the copper plate, black chromium coating and heat absorption rubber layer, because black chromium coating can absorb the heat of conductor, and at the in-process of absorption, black chromium coating can convert the heat and cool down and transmit remaining heat to in the heat absorption rubber layer, thereby heat the heat absorption rubber layer, the in-process that the entropy reduces will be being in under black chromium coating's heating this moment on heat absorption rubber layer, thereby the pliability on heat absorption rubber layer this moment has been improved to the radiating while, thereby ensured outside heat absorption rubber layer when receiving external colliding with or cutting to scratch, impact force when can effectually colliding with external article is alleviated, and then ensured the life of this cable.

2. This heat conduction fire prevention type power cable, through setting up outer inoxidizing coating, and outer inoxidizing coating sets up to the heat absorption rubber layer, because the heat when the heat absorption rubber can circulate this cable internal current absorbs and transmits to the external world, thereby the inside heat of this cable conducts, owing to increased the circulation between the inside heat of this cable and the outside air, and then ensured that this cable can be quick with inside heat conduction to the external world, reduced this cable because of the too high condition that appears the short circuit of inside heat.

3. This heat conduction fire prevention type power cable, through setting up fire-resistant insulation layer, because fire-resistant insulation layer sets up to mineralized substance mica tape layer, and the insulating layer is formed by mica tape and the combination of pottery silicone rubber area, the thickness of mica tape is 0.15mm can reach the fire-resistant level of A level, and pottery silicone rubber area has good electrical insulation, fire-resistant insulation layer can rapid porcelain under fire hazard environment, thereby can effectively keep apart heat propagation and protect conductor safety, and above because mineralized substance mica tape layer is nontoxic and smokeless when burning is the material of safety ring guarantor, thereby when guaranteeing the environment, the long service life that has ensured this cable can adapt to low temperature and high temperature service environment.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic structural view of a conductor of the present invention;

fig. 3 is a schematic cross-sectional view of the conductor of the present invention;

in the figure: 1 outer protective layer, 2 black chromium coating, 3 copper plating layers, 4 insulating ceramic layers, 5 filling layers, 6 glass fiber layers, 7 reinforcing ribs, 8 fireproof insulating layers and 9 conductors.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1-3, the utility model provides a technical solution: a heat-conducting fireproof power cable comprises an outer protective layer 1, wherein a black chromium coating 2 is arranged on the inner wall of the outer protective layer 1, a copper plating layer 3 is arranged in the black chromium coating 2, an insulating ceramic layer 4 is arranged in the copper plating layer 3, a filling layer 5 is arranged in the insulating ceramic layer 4, a glass fiber layer 6 is arranged in the filling layer 5, reinforcing ribs 7 are arranged in the glass fiber layer 6, a fire-resistant insulating layer 8 is arranged in the reinforcing ribs 7, a conductor 9 is arranged in the fire-resistant insulating layer 8, and by arranging the copper plating layer 3, the black chromium coating 2 and a heat-absorbing rubber layer, the black chromium coating 2 can absorb heat of the conductor 9, in the absorbing process, the black chromium coating 2 can convert and cool the heat and transmit the residual heat into the heat-absorbing rubber layer, so as to heat the heat-absorbing rubber layer, at the moment, the heat-absorbing rubber layer is in the process of entropy reduction under the heating of the black chromium coating 2, therefore, the flexibility of the heat absorption rubber layer is improved while heat dissipation is carried out, the impact force generated when external objects collide can be effectively relieved when the external heat absorption rubber layer is collided or scraped by the outside, and the service life of the cable is further guaranteed.

Specifically, as shown in fig. 2 and 3, the conductor 9 is made of aluminum alloy, the conductor 9 is made of three aluminum alloy wires by cross winding, the outer protective layer 1 is set as a heat absorbing rubber layer, the heat absorbing rubber absorbs heat generated when current flows inside the cable and transmits the heat to the outside, so that the heat inside the cable is conducted, the circulation between the heat inside the cable and the outside air is increased, thereby ensuring that the cable can rapidly conduct the heat inside to the outside, reducing the short circuit of the cable caused by overhigh heat inside the cable, the fire-resistant insulating layer 8 is set as a mineralized mica tape layer, the reinforcing ribs 7 are set as silica gel reinforcing ribs 7, the glass fiber layer 6 is woven by glass fiber ropes, the woven shape is set as a mesh, the fire-resistant insulating layer 8 is arranged, and the fire-resistant insulating layer 8 is set as a mineralized mica tape layer, the mica tape and the ceramic silicone rubber tape are wound outside the cable core to serve as heat insulation layers, when a fire disaster happens, the ceramic silicone rubber tape is rapidly vitrified to form a shell at the high temperature of 350 ℃, so that the heat source is effectively isolated from being conducted to the cable core, the normal power supply function of the cable is ensured, and the thickness of the glass fiber layer 6 is 1-2 mm.

Specifically, as shown in fig. 3, the filling layer 5 is made of aluminum hydroxide, sodium carbonate and paraffin, the thickness of the filling layer 5 is one half of the thickness of the conductor 9, the outer protection layer 1 is arranged as a heat absorption rubber layer, the absorption ratio alpha of the black chromium coating layer 2 is 0.93-0.96, the thermal emission ratio epsilon is 0.08-0.15, the ratio of alpha/epsilon is 6-12, the black chromium coating layer 2 is electroplated on the surface of the filling layer 5, the glass fiber layer 6 is arranged and woven by adopting a glass fiber rope, the gap of the cable core is filled with a glass fiber strip, the tensile resistance of the cable can be effectively enhanced, the black chromium coating layer 2 is arranged as a honeycomb-shaped structure, the copper plating layer 3 is attached to the surface of the black chromium coating layer 2, and the surface of the copper plating layer 3 needs to be processed by plating bright nickel.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed 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 by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A heat conduction fire prevention type power cable, includes outer inoxidizing coating (1), its characterized in that: the inner wall of outer inoxidizing coating (1) is provided with black chromium coating (2), be provided with copper plate (3) in black chromium coating (2), be provided with insulating ceramic layer (4) in copper plate (3), be provided with filling layer (5) in insulating ceramic layer (4), be provided with glass fiber layer (6) in filling layer (5), be provided with strengthening rib (7) in glass fiber layer (6), be provided with fire-resistant insulation layer (8) in strengthening rib (7), be provided with conductor (9) in fire-resistant insulation layer (8).

2. A heat-conductive fire-resistant power cable according to claim 1, wherein: the conductor (9) is made of aluminum alloy, the conductor (9) is made of three aluminum alloy wires through cross winding, and the fireproof insulating layer (8) is arranged to be a mineralized mica tape layer.

3. A heat-conductive fire-resistant power cable according to claim 1, wherein: the glass fiber reinforced plastic composite material is characterized in that the reinforcing ribs (7) are silica gel reinforcing ribs, the glass fiber layer (6) is woven by glass fiber ropes, the woven shape is net-shaped, and the thickness of the glass fiber layer (6) is 1-2 mm.

4. A heat-conductive fire-resistant power cable according to claim 2, wherein: the thickness of the filling layer (5) is half of that of the conductor (9), and the outer protective layer (1) is arranged to be a heat absorption rubber layer.

5. A heat-conductive fire-resistant power cable according to claim 4, wherein: the absorption ratio alpha of the black chromium coating (2) is 0.93-0.96, the thermal emission ratio epsilon is 0.08-0.15, the alpha/epsilon ratio is 6-12, the black chromium coating (2) is electroplated on the surface of the filling layer (5), and the black chromium coating (2) is of a honeycomb type net structure.

6. A heat-conductive fire-resistant power cable according to claim 1, wherein: the copper plating layer (3) is attached to the surface of the black chromium coating (2), and the surface of the copper plating layer (3) needs to be plated with bright nickel.