CN210443327U

CN210443327U - High flame-retardant power cable

Info

Publication number: CN210443327U
Application number: CN201921161322.9U
Authority: CN
Inventors: 赵启年; 安学军
Original assignee: Western Cable Shaanxi Co Ltd
Current assignee: Western Cable Shaanxi Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-01
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a high fire-retardant power cable, the cable core comprises a cable core, the inside isolation sleeve that is provided with of cable core, the inside main line core that is provided with of isolation sleeve, the main line core both sides all are provided with vice sinle silk, the main line core below is provided with supplementary sinle silk, all the other positions of isolation sleeve inside are provided with the fire-retardant wire rod of packing, the cable core outside is equipped with the insulating filling layer, the insulating filling layer outside is equipped with fire-resistant fire-retardant layer, the fire-resistant fire-retardant layer outside is equipped with flexible protective sheath, the flexible protective sheath outside is equipped with the oversheath, fire-resistant fire-retardant layer be equipped with the three-layer, the inlayer is steel armour. The utility model discloses take there is multiple fire-retardant processing operation, fully guaranteed the flame retardant efficiency of equipment, promoted the safety in utilization of equipment.

Description

High flame-retardant power cable

Technical Field

The utility model relates to the technical field of cables, specifically be a high flame retardant power cable.

Background

The flame-retardant cable is a cable which is characterized in that a test sample is burnt under a specified test condition, after a test fire source is removed, the flame spread is only within a limited range, and residual flame or residual ignition can be self-extinguished within a limited time. The basic characteristics are as follows: in the event of a fire, may burn out and fail to operate, but may prevent the spread of the fire. In common, in case of fire, the electric wire can limit the combustion within a local range, does not spread, keeps other various equipment and avoids causing larger loss.

Chinese patent publication No. CN205827977U discloses a fire-resistant flame-retardant cable, which comprises a cable core, wherein an insulating filling layer is arranged at the periphery of the cable core, a fire-resistant flame-retardant layer is arranged at the periphery of the insulating filling layer, a flexible protective sleeve is arranged at the periphery of the fire-resistant flame-retardant layer, an outer sheath is arranged at the periphery of the flexible protective sleeve, the fire-resistant flame-retardant layer is provided with three layers, an inner layer is a steel armor, a middle layer is a glass fiber wrapping tape, and an outer layer is a low.

The main problems of the prior art in the practical use process are that the protection efficiency is low, the protection function is simple, the protection effect is poor, and the fire prevention and control cannot be fundamentally performed, so that further improvement is needed on the basis of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high flame retardant power cable to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a high fire-retardant power cable, includes the cable core, the inside isolation sleeve that is provided with of cable core, the inside main line core that is provided with of isolation sleeve, the main line core both sides all are provided with vice sinle silk, the main line core below is provided with supplementary sinle silk, all the other positions of isolation sleeve inside are provided with the fire-retardant wire rod of packing, the cable core outside is equipped with insulating filling layer, the insulating filling layer outside is equipped with fire-resistant fire-retardant layer, the fire-resistant fire-retardant layer outside is equipped with flexible protective sheath, the flexible protective sheath outside is equipped with the oversheath, fire-resistant fire-retardant layer be equipped with the three-layer, the inlayer is steel armour.

In the structure, when the cable is used and operated, an operator can adjust the use position and the use mode of the equipment according to specific use requirements, the steel armor in the fire-resistant flame-retardant layer can play a role in fire blocking, the glass fiber wrapping tape has high temperature resistance and can also play a good heat insulation role in gaps between glass fiber warps and wefts, an axial gap channel formed between layers of the glass fiber can also play a good heat dissipation role, the low-smoke halogen-free material layer has the fire-resistant and insulating roles, the insulating filling layer can play an insulating protection role, the filled flame-retardant wire can generate a large amount of smoke dust under the condition of cable combustion so as to be timely discovered by constructors, the main wire core and the auxiliary wire core can be responsible for power transmission, the auxiliary wire core can provide double protection for the equipment, and the isolation sleeve can provide double protection for the equipment, and equipment failure is avoided.

In order to further improve the using effect of the high-flame-retardant power cable, the main wire core is embedded and connected with the filling flame-retardant wire, the auxiliary wire core is embedded and connected with the filling flame-retardant wire, and the auxiliary wire core is embedded and connected with the filling flame-retardant wire.

In order to further improve the using effect of the high-flame-retardant power cable, the number of the auxiliary wire cores is 2, and the auxiliary wire cores are symmetrically arranged at positions below the main wire core.

In order to further improve the using effect of the high-flame-retardant power cable, the filling flame-retardant wire is made of a flame-retardant smoke-generating material, and a large amount of smoke is generated during combustion.

In order to further improve the using effect of the high-flame-retardant power cable, the cable core is formed by pressing a plurality of aluminum alloy cores.

In order to further improve the using effect of the high-flame-retardant power cable, the overlapping rate of the glass fiber wrapping tape is 45-50%.

In order to further improve the using effect of the high-flame-retardant power cable, the low-smoke halogen-free material layer is a ceramic interlayer.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

the utility model discloses a steel armour can play the effect that keeps off fire in fire-resistant fire-retardant layer, glass fiber band except that the temperature resistant is high, clearance between the glass fiber longitude and latitude also can play fine thermal-insulated effect, the axial clearance passageway that glass fiber formed between layer and layer, also can play fine radiating action, low smoke and zero halogen bed of material has fire-resistant and insulating effect, insulating filling layer can play insulating protective action, it can produce a large amount of smoke and dust under the condition of cable burning to pack fire-retardant wire rod to the constructor in time discovers in time, the principal conductor core with vice sinle silk can be responsible for power transmission, supplementary sinle silk can provide duplicate protection for equipment, the barrier sleeve can provide duplicate protection for equipment, avoids equipment to break down. The utility model discloses take there is multiple fire-retardant processing operation, fully guaranteed the flame retardant efficiency of equipment, promoted the safety in utilization of equipment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic cross-sectional view of the inner structure of the cable core;

fig. 3 is a schematic sectional view of the internal structure of the middle fire-resistant and flame-retardant layer of the present invention.

The reference numerals are explained below:

1. the cable comprises a cable core, 2, an isolation sleeve, 3, a main cable core, 4, a secondary cable core, 5, an auxiliary cable core, 6, a filling flame-retardant wire, 7, an insulating filling layer, 8, a flame-retardant layer, 81, a steel armor, 82, a glass fiber wrapping tape, 83, a low-smoke halogen-free material layer, 9, a flexible protective sleeve, 10 and an outer sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, which illustrate a high flame-retardant power cable, including a cable core 1, an isolation sleeve 2 is disposed inside the cable core 1, a main core 3 is disposed inside the isolation sleeve 2, auxiliary cores 4 are disposed on both sides of the main core 3, an auxiliary core 5 is disposed below the main core 3, flame-retardant wires 6 are disposed at other positions inside the isolation sleeve 2, an insulating filling layer 7 is disposed outside the cable core 1, a fire-retardant layer 8 is disposed outside the insulating filling layer 7, a flexible protective sleeve 9 is disposed outside the fire-retardant layer 8, an outer sheath 10 is disposed outside the flexible protective sleeve 9, the fire-retardant layer 8 has three layers, an inner layer is a steel armor 81, a middle layer is a glass fiber tape 82, and an outer layer is a low smoke zero halogen material layer 83.

In order to further improve the using effect of the high-flame-retardant power cable, the main wire core 3 is embedded and connected with the filling flame-retardant wire 6, the auxiliary wire core 4 is embedded and connected with the filling flame-retardant wire 6, and the auxiliary wire core 5 is embedded and connected with the filling flame-retardant wire 6.

In order to further improve the using effect of the high-flame-retardant power cable, the number of the auxiliary wire cores 4 is 2, and the auxiliary wire cores are symmetrically arranged at positions below the main wire core 3.

In order to further improve the using effect of the high-flame-retardant power cable, the filling flame-retardant wire 6 is made of a flame-retardant smoke-generating material, and a large amount of smoke is generated during combustion.

In order to further improve the use effect of the high-flame-retardant power cable, the cable core 1 is formed by pressing a plurality of aluminum alloy cores.

In order to further improve the using effect of the high-flame-retardant power cable, the overlapping rate of the glass fiber wrapping tape 82 is 45-50%.

In order to further improve the use effect of the high flame retardant power cable, the low smoke zero halogen material layer 83 is a ceramic interlayer.

The utility model discloses a theory of operation does: when the cable is used and operated, an operator can adjust the use position and the use mode of the equipment according to specific use requirements, the steel armor 81 in the fire-resistant flame-retardant layer 8 can play a role in fire blocking, the glass fiber belting 82 has high temperature resistance, gaps among glass fiber warps and wefts can play a good heat insulation role, axial gap channels formed among layers of glass fibers can play a good heat dissipation role, the low-smoke halogen-free material layer 83 has fire-resistant and insulating roles, the insulating filling layer 7 can play an insulating protection role, the filling flame-retardant wire 6 can generate a large amount of smoke and dust under the condition of cable combustion so as to be found by constructors in time, the main wire core 3 and the auxiliary wire core 4 can be responsible for power transmission, the auxiliary wire core 5 can provide double protection for the equipment, and the isolation sleeve 2 can provide double protection for the equipment, and equipment failure is avoided. The utility model discloses take there is multiple fire-retardant processing operation, fully guaranteed the flame retardant efficiency of equipment, promoted the safety in utilization of equipment.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high flame retardant power cable is characterized in that: comprises a cable core (1), an isolation sleeve (2) is arranged in the cable core (1), a main wire core (3) is arranged in the isolation sleeve (2), auxiliary wire cores (4) are arranged on two sides of the main wire core (3), an auxiliary wire core (5) is arranged below the main wire core (3), filling flame-retardant wires (6) are arranged at the rest positions in the isolation sleeve (2), an insulating filling layer (7) is arranged on the outer side of the cable core (1), a fire-resistant flame-retardant layer (8) is arranged on the outer side of the insulating filling layer (7), a flexible protective sleeve (9) is arranged on the outer side of the fire-resistant flame-retardant layer (8), an outer sheath (10) is arranged on the outer side of the flexible protective sleeve (9), the fireproof flame-retardant layer (8) is provided with three layers, wherein the inner layer is a steel armor (81), the middle layer is a glass fiber wrapping tape (82), and the outer layer is a low-smoke halogen-free material layer (83).

2. A high flame retardant power cable according to claim 1, characterized in that: the main wire core (3) is embedded and connected with the filling flame-retardant wire (6), the auxiliary wire core (4) is embedded and connected with the filling flame-retardant wire (6), and the auxiliary wire core (5) is embedded and connected with the filling flame-retardant wire (6).

3. A high flame retardant power cable according to claim 1, characterized in that: the number of the auxiliary wire cores (4) is 2 in total, and the auxiliary wire cores are symmetrically arranged at the position below the main wire core (3).

4. A high flame retardant power cable according to claim 1, characterized in that: the filling flame-retardant wire (6) is made of a flame-retardant smoke-generating material, and generates a large amount of smoke dust during combustion.

5. A high flame retardant power cable according to claim 1, characterized in that: the cable core (1) is formed by pressing a plurality of aluminum alloy cores.

6. A high flame retardant power cable according to claim 1, characterized in that: the lapping rate of the glass fiber wrapping tape (82) is 45-50%.

7. A high flame retardant power cable according to claim 1, characterized in that: the low-smoke halogen-free material layer (83) is a ceramic interlayer.