CN217008756U

CN217008756U - Halogen-free low-smoke flame-retardant fire-resistant power cable

Info

Publication number: CN217008756U
Application number: CN202122355110.8U
Authority: CN
Inventors: 肖尚本; 李强; 张俊
Original assignee: Anhui Huayuan Cable Group Co ltd
Current assignee: Anhui Huayuan Cable Group Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-07-19
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant fireproof power cable which comprises a low-smoke halogen-free outer protective sleeve, wherein a wrapping tape is arranged on the inner side of the outer protective sleeve, a steel tape armor is arranged on the inner side of the wrapping tape, a waterproof layer is arranged on the inner side of the steel tape armor, an inner protective sleeve is arranged on the inner side of the waterproof layer, a hexagonal framework is arranged on the inner side of the inner protective sleeve, a mica tape insulating layer is arranged between the hexagonal framework and the inner protective sleeve, and a metal shielding layer is arranged on the inner side of the hexagonal framework. The cable outer protective sleeve is made of low-smoke halogen-free flame-retardant sheath materials, the outer protective sleeve has anti-cracking and flame-retardant performances, the steel tape armor is used for enhancing the compression resistance and anti-interference performance of cables, the aramid yarns have the compression resistance and can prolong the service life of the cables, the second filler is low-smoke halogen-free filler and can improve the flame-retardant performance of the filling part, the barrier is arranged to be triangular and can isolate conductors from mutual contact short circuit, and the tensile wire in the barrier can enhance the tensile performance of the cables.

Description

Halogen-free low-smoke flame-retardant fire-resistant power cable

Technical Field

The utility model relates to a cable, in particular to a halogen-free low-smoke flame-retardant fire-resistant power cable.

Background

The fire-resistant flame-retardant cable can keep the integrity of a circuit under the condition of fire, and ensure the safe and normal operation of the functions of a key emergency system. The system is widely used abroad in fire alarm systems, smoke detection systems, emergency lighting power systems and public broadcasting systems in buildings such as superstores, hospitals, offices, stations, airports, civil houses and the like.

Traditional fire-resistant flame retarded cable has certain limitation when using, and fire-resistant time is not long enough, especially when burning, along with under the condition that water sprays and machinery strikes vibrations, the cable warp and becomes soft easy mutual contact and takes place the short circuit, and compressive tensile strength is relatively poor, provides a halogen-free low fire-resistant power cable of cigarette fire-retardant. Long compression, tension and fire resisting time and short circuit prevention

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a halogen-free low-smoke flame-retardant fire-resistant power cable, which is characterized in that a low-smoke halogen-free flame-retardant sheath material is adopted for an outer protective sleeve, the outer protective sleeve has anti-cracking and flame-retardant properties, steel tape armor is used for enhancing the compression resistance and anti-interference properties of the cable, aramid yarns are adopted as first fillers, the aramid yarns have the compression resistance and can prolong the service life of the cable, low-smoke halogen-free fillers are adopted as second fillers, the flame-retardant properties of the filling parts can be improved, a barrier is arranged into a triangle shape and can isolate conductors from mutual contact short circuit, and tensile wires in the barrier can enhance the tensile properties of the cable.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a there is not steamed low fire-retardant fire-resistant power cable of cigarette, the cable includes the outer lag of low cigarette and halogen-free, the inboard of outer lag is equipped with the band, and the inboard of band is equipped with the steel band armor, and the inboard of steel band armor is equipped with the waterproof layer, and the inboard of waterproof layer is equipped with interior lag.

The inner side of the inner protective sleeve is provided with a hexagonal framework, a mica tape insulating layer is arranged between the hexagonal framework and the inner protective sleeve, and a metal shielding layer is arranged on the inner side of the hexagonal framework.

Furthermore, a first filler is arranged between the metal shielding layer and the hexagonal framework, and copper conductors distributed in an array mode are arranged on the inner side of the metal shielding layer.

Furthermore, a triangular barrier for preventing contact is arranged between the copper conductors, a tensile wire for preventing breaking is arranged in the barrier, and a second filler is arranged in front of the barrier and the metal shielding layer.

Furthermore, an inner insulating layer is arranged on the outer side of the copper conductor and used for enhancing electrical performance, a mica tape fire-resistant layer is arranged on the outer side of the inner insulating layer, and an outer insulating layer used for enhancing the flame-retardant effect is arranged on the outer side of the fire-resistant layer.

Further, the outer protective sleeve is made of low-smoke halogen-free flame-retardant sheath materials.

Further, the wrapping tape is formed by spirally winding an aluminum tape in a double-layer overlapping mode.

Furthermore, the metal shielding layer is longitudinally wrapped by adopting copper plastic according with the banding pattern, metal faces inwards after longitudinal wrapping, and the plastic-coated face faces outwards.

Further, the first filler is aramid yarn.

Further, the second filler is a low smoke zero halogen filler.

The utility model has the beneficial effects that:

1. the cable adopts the low-smoke halogen-free flame-retardant sheath material through the outer protective sleeve, the outer protective sleeve has the anti-cracking and flame-retardant performances, and the steel strip armor is used for enhancing the compression resistance and the anti-interference performance of the cable;

2. the aramid fiber yarn is adopted as the first filler of the cable, has the compression resistance and can prolong the service life of the cable;

3. the second filler of the cable adopts low-smoke halogen-free filler, the flame retardant property of the filled part can be improved, the barrier is arranged into a triangle shape, the mutual contact short circuit of conductors can be isolated, and the tensile property of the cable can be enhanced by the tensile wires in the barrier.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a cable construction of the present invention;

fig. 2 is a schematic view of a portion of the cable of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a there is not steamed low fire-retardant fire-resistant power cable of cigarette, the cable includes outer lag 1 of low smoke and zero halogen, as shown in figure 1, the inboard of outer lag 1 is equipped with band 2, the inboard of band 2 is equipped with steel strip armor 3, the inboard of steel strip armor 3 is equipped with waterproof layer 4, the inboard of waterproof layer 4 is equipped with interior lag 5, the inboard of interior lag 5 is equipped with hexagonal skeleton 6 of stainless steel, be equipped with mica tape insulating layer 7 between hexagonal skeleton 6 and the interior lag 5, the inboard of hexagonal skeleton 6 is equipped with metal shielding layer 8, be equipped with first filler 9 between metal shielding layer 8 and the

hexagonal skeleton

6, 8 inboard copper conductor 10 that are equipped with array distribution in the metal shielding layer, be equipped with the firm barrier 11 of triangle-shaped that is used for preventing the contact between the copper conductor 10, be equipped with the tensile cord 12 that is used for preventing to stretch out in the barrier 11, be equipped with second filler 13 before barrier 11 and the metal shielding layer 8.

An inner insulating layer 101 for enhancing electrical performance is arranged outside the copper conductor 10, as shown in fig. 2, a mica tape fire-resistant layer 102 is arranged outside the inner insulating layer 101, and an outer insulating layer 103 for enhancing flame-retardant effect is arranged outside the fire-resistant layer 102.

The outer protecting sleeve 1 is made of low-smoke halogen-free flame-retardant sheath materials, and the outer protecting sleeve 1 has the performances of cracking resistance and flame retardance.

The wrapping tape 2 is formed by spirally winding double layers of aluminum tapes in an overlapping mode, and the steel tape armor 3 is used for enhancing the compression resistance and the anti-interference performance of the cable.

The metal shielding layer 8 adopts copper-plastic longitudinal wrapping which accords with the banding pattern, after the longitudinal wrapping, the metal faces inwards, and the plastic-coated face faces outwards.

The first filler 9 is aramid yarn, and the aramid yarn has high toughness and compression resistance and can prolong the service life of the cable.

The barrier 11 is arranged to be triangular, so that the stability is improved, the mutual contact short circuit of the conductors can be isolated, and the tensile property of the cable can be enhanced by the tensile wire 12 in the barrier 11.

The second filler 13 is a low-smoke halogen-free filler, and can improve the flame retardant property of the filled part.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and such changes and modifications are within the scope of the utility model as claimed.

Claims

1. A halogen-free low-smoke flame-retardant fireproof power cable comprises a low-smoke halogen-free outer protective sleeve (1), and is characterized in that a wrapping tape (2) is arranged on the inner side of the outer protective sleeve (1), a steel strip armor (3) is arranged on the inner side of the wrapping tape (2), a waterproof layer (4) is arranged on the inner side of the steel strip armor (3), and an inner protective sleeve (5) is arranged on the inner side of the waterproof layer (4);

the inner side of the inner protecting sleeve (5) is provided with a hexagonal framework (6), a mica tape insulating layer (7) is arranged between the hexagonal framework (6) and the inner protecting sleeve (5), and a metal shielding layer (8) is arranged on the inner side of the hexagonal framework (6).

2. The halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 1, wherein a first filler (9) is arranged between the metal shielding layer (8) and the hexagonal framework (6), and copper conductors (10) are arranged on the inner side of the metal shielding layer (8) in an array distribution manner.

3. A halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 2, characterized in that a triangular barrier (11) for preventing contact is arranged between the copper conductors (10), a tensile wire (12) for preventing breaking is arranged in the barrier (11), and a second filler (13) is arranged in front of the barrier (11) and the metal shielding layer (8).

4. A halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 3, characterized in that an inner insulating layer (101) is arranged outside the copper conductor (10), the inner insulating layer (101) is used for enhancing electrical performance, a mica tape flame-retardant layer (102) is arranged outside the inner insulating layer (101), and an outer insulating layer (103) used for enhancing flame-retardant effect is arranged outside the flame-retardant layer (102).

5. The halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 1, characterized in that the outer protective sheath (1) is made of a low-smoke halogen-free flame-retardant sheath material.

6. The halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 1, wherein the wrapping tape (2) is formed by spirally winding double layers of aluminum tapes in an overlapping manner.

7. The halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 2, wherein the metal shielding layer (8) is longitudinally wrapped with copper-plastic conforming band patterns, metal faces inwards after longitudinal wrapping, and the plastic-coated face faces outwards.

8. A halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 2, characterized in that the first filler (9) is aramid yarn.

9. A halogen-free low-smoke flame-retardant fire-resistant power cable according to claim 3, characterized in that the second filler (13) is a low-smoke halogen-free filler.