CN215069399U - Middle-high voltage flexible fireproof cable - Google Patents

Abstract

The utility model discloses a medium and high voltage flexible fireproof cable, include cable core, sinle silk, wind band, armor, the fire-retardant layer of heat conduction, silicon rubber inner sheath and oversheath, the sinle silk includes conductor and insulating layer, the insulating layer encircles and sets up in the conductor outside, the cable core includes multiunit sinle silk and filler, the filler is located the multiunit between the sinle silk, encircle around the band and set up in the cable core outside, the armor sets up around the band outside, the fire-retardant layer ring of heat conduction is established in the armor outside. The utility model discloses a set up the fire-retardant layer of heat conduction to form the carbon fiber heat-conducting layer by carbon fiber and aluminium base fibre transposition, can improve the intensity of cable core under the condition of guaranteeing the heat conductivity, can utilize the carbon fiber heat-conducting layer to conduct the heat on the cable core, and conduct to the cable core outside through fire-retardant silica gel strip, improve the thermal diffusivity, thereby improve the high temperature resistance and the fire behavior of cable.

Description

Middle-high voltage flexible fireproof cable

Technical Field

The utility model relates to a middle and high voltage flexible cable correlation technique field specifically is a middle and high voltage flexible fireproof cable.

Background

A cable is a conductor for transmitting power or information from one place to another, and is made of one or more conductors insulated from each other and an outer insulating protective layer, and a medium-high voltage flexible cable is a common type of cable.

The holistic high temperature resistance performance of current well high voltage flexible cable is not good, and the fire behavior is not high, leads to the security not good, and when flexible cable used under the environment of humidity, makes water or moisture invade the cable inside easily, causes the damage to the cable, influences its normal use, needs improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible fireproof cable of well high voltage to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a well high voltage flexible fireproof cable, includes cable core, sinle silk, winds band, armor, the fire-retardant layer of heat conduction, silicon rubber inner sheath and oversheath, the sinle silk includes conductor and insulating layer, the insulating layer encircles and sets up in the conductor outside, the cable core includes multiunit sinle silk and filler, the filler is located the multiunit between the sinle silk, encircle around the band and set up in the cable core outside, the armor sets up in the band outside, the fire-retardant layer ring of heat conduction is established in the armor outside, the silicon rubber inner sheath sets up in the fire-retardant layer outside of heat conduction, the oversheath sets up in the silicon rubber inner sheath outside.

As further preferable in the present technical solution: the heat-conducting flame-retardant layer comprises a carbon fiber heat-conducting layer and a mica tape, the carbon fiber heat-conducting layer is formed by stranding carbon fibers and aluminum-based fibers, and the carbon fiber heat-conducting layer is arranged on the surface of the armor layer in a surrounding mode.

As further preferable in the present technical solution: the surface of the carbon fiber heat-conducting layer is provided with flame-retardant silica gel strips, the flame-retardant silica gel strips are circumferentially and uniformly distributed on the surface of the carbon fiber heat-conducting layer, and the mica tape is looped on the surface of the flame-retardant silica gel strips.

As further preferable in the present technical solution: the outer surface of the silicon rubber inner sheath is provided with a first longitudinal groove, the inner surface of the silicon rubber inner sheath is provided with a second longitudinal groove, and the first longitudinal groove and the second longitudinal groove are filled with a ceramic silica gel drying agent and a magnesium hydroxide flame-retardant filler respectively.

As further preferable in the present technical solution: the first longitudinal grooves and the second longitudinal grooves are all provided with multiple groups, and the first longitudinal grooves and the second longitudinal grooves are circumferentially uniformly arranged on the silicon rubber inner sheath in a staggered mode.

As further preferable in the present technical solution: the waterproof breathable film is arranged on the surface of the silicone rubber inner sheath, and is arranged on the surface of the silicone rubber inner sheath in a surrounding mode, and the waterproof breathable film is arranged on the surface of the silicone rubber inner sheath in a surrounding mode and is provided with a water blocking tape.

As further preferable in the present technical solution: the outer sheath is made of chloroprene rubber, and a fireproof coating is arranged on the surface of the outer sheath.

The utility model provides a flexible fireproof cable of well high voltage possesses following beneficial effect:

(1) the utility model discloses a set up the fire-retardant layer of heat conduction to form the carbon fiber heat-conducting layer by carbon fiber and aluminium base fibre transposition, can improve the intensity of cable core under the condition of guaranteeing the heat conductivity, can utilize the carbon fiber heat-conducting layer to conduct the heat on the cable core, and conduct to the cable core outside through fire-retardant silica gel strip, improve the thermal diffusivity, thereby improve the high temperature resistance and the fire behavior of cable.

(2) The utility model discloses a set up the silicon rubber inner sheath to be equipped with the vertical recess of first vertical recess and second on the silicon rubber inner sheath, and it has the fire-retardant filler of ceramic silica gel drier and magnesium hydrate to fill respectively in the vertical recess of first vertical recess and second, can utilize ceramic silica gel drier to play damp-proofing function, silicon rubber inner sheath surface sets up waterproof ventilated membrane and water-blocking area simultaneously, can guarantee that water-proof effects is good, and the fire-retardant filler of magnesium hydrate can play the fire prevention flame-retardant effect, improve the security of cable.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a schematic structural view of the silicone rubber inner sheath of the present invention;

fig. 4 is the structural schematic diagram of the heat-conducting flame-retardant layer of the present invention.

In the figure: 1. a cable core; 2. a conductor; 3. an insulating layer; 4. a filler; 5. wrapping a tape; 6. an armor layer; 7. a thermally conductive flame retardant layer; 8. a silicon rubber inner sheath; 9. a waterproof breathable film; 10. a water blocking tape; 11. an outer sheath; 12. a fire-retardant coating; 13. a wire core; 14. a first longitudinal groove; 15. a ceramic silica gel desiccant; 16. a second longitudinal groove; 17. magnesium hydroxide flame retardant filler; 18. a carbon fiber heat conduction layer; 19. flame-retardant silica gel strips; 20. mica tape.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides a well high voltage flexible fireproof cable, including cable core 1, sinle silk 13, around band 5, armor 6, the fire-retardant layer 7 of heat conduction, silicon rubber inner sheath 8 and oversheath 11, sinle silk 13 includes conductor 2 and insulating layer 3, insulating layer 3 encircles the setting in conductor 2 outsides, cable core 1 includes multiunit sinle silk 13 and filler 4, filler 4 is located between multiunit sinle silk 13, encircle to set up in cable core 1 outsidely around band 5, armor 6 sets up in band 5 outsidely, the fire-retardant layer 7 of heat conduction encircles and is established in 6 outsidess in armor, silicon rubber inner sheath 8 sets up in the fire-retardant layer 7 outsidess of heat conduction, oversheath 11 sets up in silicon rubber inner sheath 8 outsidess.

In this embodiment, specifically: the heat conduction flame-retardant layer 7 comprises a carbon fiber heat conduction layer 18 and a mica tape 20, the carbon fiber heat conduction layer 18 is formed by twisting carbon fibers and aluminum-based fibers, the carbon fiber heat conduction layer 18 surrounds the armor layer 6 surface, the carbon fiber heat conduction layer 18 is formed by twisting the carbon fibers and the aluminum-based fibers, the carbon fibers have good heat conductivity, the temperature in the cable core 1 can be conducted to the outside, and meanwhile, the strength of the cable core 1 can be improved under the condition of ensuring the heat conductivity.

In this embodiment, specifically: carbon fiber heat-conducting layer 18 surface is equipped with fire-retardant silica gel strip 19, and fire-retardant silica gel strip 19 is circumference evenly distributed on carbon fiber heat-conducting layer 18 surface, and mica tape 20 encircles and is established on fire-retardant silica gel strip 19 surface, can conduct the heat on the carbon fiber heat-conducting layer 18 to the cable core 1 outside through fire-retardant silica gel strip 19, improves the thermal diffusivity, and mica tape 20 can increase the holistic fire behavior of cable simultaneously to improve the high temperature resistance and the fire behavior of cable.

In this embodiment, specifically: first vertical recess 14 has been seted up to 8 surfaces of silicon rubber inner sheath, second vertical recess 16 has been seted up to 8 internal surfaces of silicon rubber inner sheath, it has ceramic silica gel drier 15 to fill respectively in first vertical recess 14 and the second vertical recess 16, the fire-retardant filler 17 of magnesium hydrate, can utilize ceramic silica gel drier 15 to absorb the inside moisture of cable, guarantee the inside drying of cable, avoid the inside damage that appears of cable, the fire-retardant function of preventing fires can be played to the fire-retardant filler 17 of magnesium hydrate simultaneously, the holistic security of cable is improved.

In this embodiment, specifically: first longitudinal groove 14 and second longitudinal groove 16 all are equipped with the multiunit, and first longitudinal groove 14 and second longitudinal groove 16 are the even crisscross setting in circumference on silicon rubber inner sheath 8, and through crisscross first longitudinal groove 14 of multiunit and the vertical groove 16 of second that sets up in circumference on silicon rubber inner sheath 8, can increase the barrier propterty of silicon rubber inner sheath 8, improve the holistic security of cable.

In this embodiment, specifically: 8 surfaces of silicon rubber inner sheath are equipped with waterproof ventilated membrane 9, and waterproof ventilated membrane 9 encircles and sets up on 8 surfaces of silicon rubber inner sheath, and waterproof ventilated membrane 9 surface encircles and is provided with water-blocking tape 10, can utilize water-blocking tape 10 to prevent outside water to enter into the cable inside, and waterproof ventilated membrane 9 can further avoid outside water to enter into cable core 1 inside simultaneously, and the security is high.

In this embodiment, specifically: the outer sheath 11 is made of chloroprene rubber, the surface of the outer sheath 11 is provided with the fireproof coating 12, the chloroprene rubber has good flame retardant property, and meanwhile, the fireproof coating 12 is arranged on the surface of the outer sheath 11, so that the fireproof property can be further improved, and the overall safety of the cable is high.

It should be noted that, in the middle and high voltage flexible fireproof cable, when in operation, the heat conduction and flame retardation layer 7 is arranged inside the cable, and the carbon fiber heat conduction layer 18 is formed by twisting carbon fibers and aluminum-based fibers, wherein the carbon fibers have good heat conductivity, and can conduct the temperature inside the cable core 1 to the outside, and at the same time, the strength of the cable core 1 can be improved under the condition of ensuring the heat conductivity, and the heat on the carbon fiber heat conduction layer 18 can be conducted to the outside of the cable core 1 through the flame retardation silica gel strip 19, so as to increase the heat dissipation area and improve the heat dissipation performance, and meanwhile, the flame retardation silica gel strip 19 is soft as a whole, so that the flexibility inside the cable can be increased while having certain flame retardation, and meanwhile, the mica tape 20 can increase the overall fireproof performance of the cable, thereby improving the high temperature resistance and the fireproof performance of the cable, and the first longitudinal groove 14 and the second longitudinal groove 16 are arranged on the silicone rubber inner sheath 8, the ceramic silica gel drying agent 15 and the magnesium hydroxide flame-retardant filler 17 are respectively filled in the first longitudinal groove 14 and the second longitudinal groove 16, moisture in the cable can be absorbed by the ceramic silica gel drying agent 15, the interior of the cable is ensured to be dry, damage in the cable is avoided, meanwhile, the magnesium hydroxide flame-retardant filler 17 can play a role in fire prevention and flame retardance, the overall safety of the cable is improved, the waterproof breathable film 9 and the waterproof tape 10 are arranged on the surface of the silicon rubber inner sheath 8, the waterproof tape 10 can be used for preventing external water from entering the cable, meanwhile, the waterproof breathable film 9 can further prevent external water from entering the cable core 1 while ensuring the air permeability in the cable, the overall waterproof performance of the cable is improved, and the moisture entering the cable can be adsorbed by the ceramic silica gel drying agent 15, so that the safety is high and the use is convenient, through adopting chloroprene rubber with oversheath 11, chloroprene rubber has good flame retardant property, sets up fire protection coating 12 on the 11 surface of oversheath simultaneously, can further increase fire behavior for the holistic security of cable is high.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A middle-high voltage flexible fireproof cable is characterized by comprising a cable core (1), a cable core (13), a wrapping tape (5), an armor layer (6), a heat-conducting flame-retardant layer (7), a silicon rubber inner sheath (8) and an outer sheath (11), the wire core (13) comprises a conductor (2) and an insulating layer (3), the insulating layer (3) is arranged outside the conductor (2) in a surrounding mode, the cable core (1) comprises a plurality of groups of cable cores (13) and fillers (4), the fillers (4) are positioned among the groups of wire cores (13), the wrapping tape (5) is arranged outside the cable core (1) in a surrounding manner, the armor layer (6) is arranged outside the wrapping tape (5), the heat-conducting flame-retardant layer (7) is arranged outside the armor layer (6) in a surrounding manner, the silicon rubber inner sheath (8) is arranged outside the heat-conducting flame-retardant layer (7), and the outer sheath (11) is arranged outside the silicon rubber inner sheath (8).

2. The medium-high voltage flexible fireproof cable according to claim 1, wherein: the heat-conducting flame-retardant layer (7) comprises a carbon fiber heat-conducting layer (18) and a mica tape (20), the carbon fiber heat-conducting layer (18) is formed by stranding carbon fibers and aluminum-based fibers, and the carbon fiber heat-conducting layer (18) is arranged on the surface of the armor layer (6) in a surrounding mode.

3. The medium-high voltage flexible fireproof cable according to claim 2, wherein: carbon fiber heat-conducting layer (18) surface is equipped with fire-retardant silica gel strip (19), fire-retardant silica gel strip (19) are circumference evenly distributed on carbon fiber heat-conducting layer (18) surface, mica tape (20) encircle establish on fire-retardant silica gel strip (19) surface.

4. The medium-high voltage flexible fireproof cable according to claim 1, wherein: the outer surface of the silicon rubber inner sheath (8) is provided with a first longitudinal groove (14), the inner surface of the silicon rubber inner sheath (8) is provided with a second longitudinal groove (16), and a ceramic silica gel drying agent (15) and a magnesium hydroxide flame-retardant filler (17) are respectively filled in the first longitudinal groove (14) and the second longitudinal groove (16).

5. The medium-high voltage flexible fireproof cable according to claim 4, wherein: the first longitudinal grooves (14) and the second longitudinal grooves (16) are provided with multiple groups, and the first longitudinal grooves (14) and the second longitudinal grooves (16) are circumferentially uniformly arranged on the silicon rubber inner sheath (8) in a staggered manner.

6. The medium-high voltage flexible fireproof cable according to claim 1, wherein: the waterproof breathable film is characterized in that a waterproof breathable film (9) is arranged on the surface of the silicon rubber inner sheath (8), the waterproof breathable film (9) is arranged on the surface of the silicon rubber inner sheath (8) in a surrounding mode, and a water blocking tape (10) is arranged on the surface of the waterproof breathable film (9) in a surrounding mode.

7. The medium-high voltage flexible fireproof cable according to claim 1, wherein: the outer sheath (11) is made of chloroprene rubber, and a fireproof coating (12) is arranged on the surface of the outer sheath (11).

Images