CN212322689U

CN212322689U - Outdoor fireproof flexible cable

Info

Publication number: CN212322689U
Application number: CN202020996500.6U
Authority: CN
Inventors: 李松树; 程斌发
Original assignee: Tianjin Zhengbiao Jinda Cable Group Co ltd
Current assignee: Tianjin Zhengbiao Jinda Cable Group Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-08
Anticipated expiration: 2030-06-04

Abstract

The utility model relates to an outdoor fire prevention flexible cable, include: the core wires comprise a plurality of single-core wires and a plurality of multi-core wires; the core wire is arranged around the soft framework, and the soft framework is matched with the core wire to be provided with a fixing groove; the outer jacket, the outer jacket cladding is in the heart yearn outside, and the outer jacket includes plastic-aluminum area, fire barrier, environmental protection oversheath, prevents gnawing the sheath from inside to outside in proper order. The utility model can resist wild animals from biting, and can effectively reduce or even avoid the damage to the cable core wire caused by biting; the flexible framework can support and position each core wire, and plays a role in buffering through self deformation when the cable is bent, so that the situation that the core wires are directly extruded and even broken can be effectively avoided; the conductor protective layer I and the conductor protective layer II are adopted to respectively protect the wire cores of the two core wires, so that the insulating property of the core wires in an outdoor environment is ensured; in addition, the fire barrier layer and the fire insulation layer ensure that the cable has good fire resistance.

Description

Outdoor fireproof flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to an outdoor fire prevention flexible cable.

Background

With the continuous update of the types of electric devices, the number and types of cables for transmitting electric power and electric signals in the same project are increasing, and different types of cable cores are often required to be integrated into one cable for laying. The existing cable has the following defects when applied in outdoor environment:

1. the outermost layer of the cable has insufficient sheath strength and is easy to be bitten by wild animals so as to lose the protection effect on the core wire;

2. when the cable is bent, the core wires are easily extruded and even broken;

3. conventional mineral insulation layers made of mica tapes tend to absorb moisture in outdoor environments, thereby reducing the insulation performance.

Disclosure of Invention

The utility model discloses aim at solving prior art not enough, and provide an outdoor fire prevention flexible cable.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

an outdoor fire-resistant flexible electrical cable comprising:

the core wires comprise a plurality of single-core wires and a plurality of multi-core wires;

the core wire is arranged around the soft framework, and the soft framework is matched with the core wire to be provided with a fixing groove;

the outer jacket, the outer jacket cladding is in the heart yearn outside, and the outer jacket includes plastic-aluminum area, fire barrier, environmental protection oversheath, prevents gnawing the sheath from inside to outside in proper order.

Furthermore, a conductor protection layer I and a sheath I are sequentially coated outside the wire core of the single-core wire.

Furthermore, the cable core of the multi-core cable is sequentially coated with a second conductor protection layer, a fire retardant layer and a second sheath, and an insulating foaming layer is filled between the cable cores of the multi-core cable.

Furthermore, the first conductor protective layer and the second conductor protective layer are both manufactured by wrapping CV belts or high-temperature cross-linked polyethylene strips.

Further, soft skeleton includes a plurality of baffles, and a plurality of baffles set up a multicore heart yearn with a plurality of subregion and every subregion of the inboard space separation of outer jacket, and the outside and the cooperation of single core heart yearn of baffle are equipped with the fixed slot, and single core heart yearn is located the fixed slot.

Furthermore, a cavity which is convenient to deform when being extruded is arranged in the clapboard.

Furthermore, the middle part of the soft framework is provided with a steel strand, and the clapboards are arranged around the axis of the steel strand at equal angular intervals.

Furthermore, fireproof filling layers are filled between the core wires and the soft framework.

Further, the bite-preventing sheath is a nylon 610 protective layer with the thickness of 0.5 mm.

The utility model has the advantages that: the utility model can resist wild animals from biting, and can effectively reduce or even avoid the damage to the cable core wire caused by biting; the flexible framework can support and position each core wire, and plays a role in buffering through self deformation when the cable is bent, so that the situation that the core wires are directly extruded and even broken can be effectively avoided; the conductor protective layer I and the conductor protective layer II are adopted to respectively protect the wire cores of the two core wires, so that the insulating property of the core wires in an outdoor environment is ensured; in addition, the fire barrier layer and the fire insulation layer ensure that the cable has good fire resistance.

Drawings

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

in the figure: 1-single core wire; 11-conductor protection layer one; 12-sheath one; 2-a multicore wire; 21-conductor protection layer two; 22-a fire barrier layer; 23-sheath two; 24-an insulating foam layer; 3-soft skeleton; 31-a separator; 32-a cavity; 33-steel strand; 4-an outer protective layer; 41-aluminum plastic belt; 42-fire barrier layer; 43-environmental protection oversheath; 44-bite prevention sheath; 5-fireproof filling layer;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown, an outdoor fire-resistant flexible cable includes:

the core wires comprise a plurality of single-core wires 1 and a plurality of multi-core wires 2;

the core wire is arranged around the soft framework 3, the soft framework 3 is provided with a fixing groove in a matching way with the core wire, and the soft framework 3 is made of rubber or silica gel;

the outer jacket 4, the cladding of outer jacket 4 is in the heart yearn outside, and outer jacket 4 includes aluminium-plastic belt 41, fire barrier 42, environmental protection oversheath 43, prevents gnawing the sheath 44 from inside to outside in proper order.

Furthermore, a conductor protective layer I11 and a sheath I12 are sequentially coated outside the core wire of the single-core wire 1.

Furthermore, a conductor protective layer II 21, a fire retardant layer 22 and a sheath II 23 are sequentially coated outside the core wires of the multi-core wire 2, and an insulating foaming layer 24 is filled among the core wires of the multi-core wire 2.

Further, the first conductor protection layer 11 and the second conductor protection layer 21 are both made of CV tapes or high-temperature cross-linked polyethylene tapes in a wrapping mode.

Further, soft skeleton 3 includes a plurality of baffles 31, and a plurality of baffles 31 set up a multicore heart yearn 2 with a plurality of subregion and every subregion of 4 inboard space separation of outer jacket, and the outside of baffle 31 is equipped with the fixed slot with the cooperation of single core heart yearn 1, and single core heart yearn 1 is located the fixed slot.

Further, a cavity 32 which is easily deformed when being pressed is formed in the partition plate 31.

Furthermore, the middle part of the flexible framework 3 is provided with a steel strand 33, and the partition plates 31 are arranged around the axis of the steel strand 33 at equal angular intervals.

Furthermore, fireproof filling layers 5 are filled between the core wires and the flexible framework 3.

Further, the bite-preventing sheath 44 is a protective layer of nylon 610 with a thickness of 0.5 mm.

When the utility model is used, the bite-preventing sheath 44 can resist the bite of wild animals, and can effectively reduce or even avoid the damage to the cable core wire caused by the bite; the flexible framework 3 can support and position each core wire, plays a role in buffering through self deformation when the cable is bent, and can effectively avoid the situation that the core wires are directly extruded and even broken; the conductor protective layers I11 and II 21 are adopted to respectively protect the wire cores of the two core wires, so that the insulating property of the core wires in an outdoor environment is ensured; in addition, fire barrier layer 22, fire barrier layer 42 ensure that the cable has good fire performance.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. An outdoor fire-resistant flexible cable, comprising:

the core wires comprise a plurality of single-core wires (1) and a plurality of multi-core wires (2);

the core wire is arranged around the soft framework (3), and the soft framework (3) is matched with the core wire to be provided with a fixing groove;

outer jacket (4), outer jacket (4) cladding is in the heart yearn outside, and outer jacket (4) from inside to outside includes plastic-aluminum area (41), separates fire bed (42), environmental protection oversheath (43), prevents gnawing sheath (44) in proper order.

2. An outdoor fireproof flexible cable according to claim 1, wherein the core of the single core wire (1) is coated with a first conductor protective layer (11) and a first sheath (12) in sequence.

3. The outdoor fireproof flexible cable of claim 2, wherein a conductor protective layer II (21), a fire retardant layer (22) and a sheath II (23) are sequentially coated outside the core wires of the multi-core wire (2), and an insulating foaming layer (24) is filled among the core wires of the multi-core wire (2).

4. The outdoor fireproof flexible cable of claim 3, wherein the first conductor protection layer (11) and the second conductor protection layer (21) are both made of CV tapes or high-temperature crosslinked polyethylene tapes.

5. An outdoor fireproof flexible cable according to claim 1, wherein the flexible framework (3) comprises a plurality of partition boards (31), the space inside the outer protective layer (4) is divided into a plurality of subareas by the partition boards (31), each subarea is provided with a multi-core wire (2), the outer side of each partition board (31) is provided with a fixing groove matched with the single-core wire (1), and the single-core wire (1) is positioned in the fixing groove.

6. An outdoor fire-proof flexible cable according to claim 5, characterized in that the clapboard (31) is provided with a cavity (32) which is easy to deform when being squeezed.

7. An outdoor fireproof flexible cable according to claim 5 or 6, wherein the flexible framework (3) is provided with steel strands (33) in the middle, and the partition plates (31) are arranged around the axes of the steel strands (33) at equal angular intervals.

8. An outdoor fireproof flexible cable according to claim 1, wherein fireproof filling layers (5) are filled between the core wires and the flexible framework (3).

9. An outdoor fire-retardant flexible cable according to claim 1, wherein the bite-preventing sheath (44) is a 0.5mm thick nylon 610 protective layer.