CN211858233U

CN211858233U - B1-grade flame-retardant mineral substance insulated flexible fireproof cable

Info

Publication number: CN211858233U
Application number: CN202020894169.7U
Authority: CN
Inventors: 周国庆; 杭士邦; 肖飞; 叶亚运
Original assignee: ANHUI MENTOR CABLE GROUP CO LTD
Current assignee: ANHUI MENTOR CABLE GROUP CO LTD
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-11-03
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a flexible fireproof cable of fire-retardant mineral substance insulation of B1 level in cable technical field, include: three inner cores, three of which are twisted together; the filling layer is coated on the outer side walls of the three inner cores; the fireproof belt cladding is wound on the outer side wall of the filling layer; an outer sheath coated on an outer sidewall of the fire-protecting strip coating, the inner core comprising: a copper-core conductor; the mica layer is coated on the outer side wall of the copper core conductor; the inner insulating layer is coated on the outer side wall of the mica layer; outer insulating layer, the outer insulating layer cladding is in on the lateral wall of inner insulating layer, the inner insulating layer is ceramic silicon rubber insulating layer, the outer insulating layer is plastic insulation layer, the utility model discloses can be when the pliability of guarantee cable effectual improvement cable's fire behavior.

Description

B1-grade flame-retardant mineral substance insulated flexible fireproof cable

Technical Field

The utility model relates to the technical field of cables, specifically a flexible fireproof cable of fire-retardant mineral substance insulation of B1 level.

Background

A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires. The cable is made of one or more conductors insulated from each other and an outer insulating protective layer, and is used for transmitting power or information from one place to another. Typically a rope-like cable made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from one another and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

The flexible cable is the first choice cable of power transmission material, signal transmission carrier in the drag chain motion system, the another name: tow chain cables, tow cables, travelling cables, robot cables, etc. The conductor structure of the flexible cable is mainly based on a twisted copper conductor structure of DINVDE0295 and IEC228 standards, and the sheath is made of low-viscosity flexible wear-resistant materials so as to reduce the wear rate of the cable in continuous reciprocating movement.

The fire resistance and high temperature resistance of the existing flexible cable are reduced in order to ensure the flexibility of the cable, and the fire resistance of the flexible cable is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible fireproof cable of fire-retardant mineral substance insulation of B1 level to solve the pliability of the current flexible cable that proposes in the above-mentioned background art for the guarantee cable, reduced the fire prevention high temperature resistance ability of cable, cause the problem that the fire resistance of flexible cable descends.

In order to achieve the above object, the utility model provides a following technical scheme: a fire-retardant mineral insulation flexible fireproof cable of grade B1, comprising:

three inner cores, three of which are twisted together;

the filling layer is coated on the outer side walls of the three inner cores;

the fireproof belt cladding is wound on the outer side wall of the filling layer;

the outer sheath is coated on the outer side wall of the fireproof belt coating.

Preferably, the inner core comprises:

a copper-core conductor;

the mica layer is coated on the outer side wall of the copper core conductor;

the inner insulating layer is coated on the outer side wall of the mica layer;

and the outer insulating layer is coated on the outer side wall of the inner insulating layer.

Preferably, the inner insulating layer is a ceramic silicon rubber insulating layer, and the outer insulating layer is a plastic insulating layer.

Preferably, the fire-retardant band cladding includes:

a first lapping layer;

the fireproof layer is coated on the outer side wall of the first wrapping layer;

the second is around the covering, the second around the covering cladding in on the outer wall of flame retardant coating.

Preferably, first around the covering and the second around the covering be the glass fiber tape around the covering, the flame retardant coating separates the oxygen layer for fire prevention mud.

Preferably, the filler layer is a refractory mortar filler layer.

Preferably, the outer sheath is a low smoke zero halogen polyolefin sheath.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can effectually improve the fire behavior of cable when guaranteeing the pliability of cable, copper core conductor is the class and sticiss the transposition conductor, the mica layer is coated on the lateral wall of copper core conductor, can effectually guarantee high temperature resistance and insulating nature of cable, the filling layer is coated on the lateral wall of three outer insulating layer, the filling layer is the chamotte filling layer, packing thickness-mm, guarantee the fire resistance of cable, the flame retardant coating is coated on the lateral wall of first around the covering, the flame retardant coating is the chamotte oxygen barrier, can effectually improve the oxygen proof fire behavior of cable, the oversheath is coated on the lateral wall of second around the covering, the oversheath is low smoke and zero halogen polyolefin sheath, the polyolefin has relative density little, chemical resistance, water proofness is good; good mechanical strength and electrical insulation property.

Drawings

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

FIG. 2 is a schematic view of the structure of the inner core of the present invention;

fig. 3 is a schematic view of the structure of the fire-proof belt of the present invention.

In the figure: 100 inner cores, 110 copper core conductors, 120 mica layers, 130 inner insulating layers, 140 outer insulating layers, 200 filling layers, 300 fireproof tape cladding layers, 310 first wrapping layers, 320 fireproof layers, 330 second wrapping layers and 400 outer sheaths.

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.

The utility model provides a flexible fireproof cable of fire-retardant mineral substance insulation of B1 level can be when guaranteeing the pliability of cable effectual improvement cable's fire-proof ability, please refer to figure 1, include: an inner core 100, a filling layer 200, a fire-retardant band cladding 300 and an outer sheath 400;

referring to fig. 1-2, three cores 100 are twisted together, the cores 100 comprising:

the copper core conductor 110 is a class 2 compacted stranded conductor;

the mica layer 120 is coated on the outer side wall of the copper core conductor 110, so that the high temperature resistance and the insulativity of the cable can be effectively guaranteed;

the inner insulating layer 130 is coated on the outer side wall of the mica layer 120, and the inner insulating layer 130 is a ceramic silicon rubber insulating layer;

the outer insulating layer 140 is coated on the outer side wall of the inner insulating layer 130, and the outer insulating layer 140 is a plastic insulating layer;

referring to fig. 1-2 again, the filling layer 200 is coated on the outer side walls of the three outer insulation layers 140, the filling layer 200 is a refractory mortar filling layer, the filling thickness is 1-3mm, and the fire resistance of the cable is guaranteed;

referring to fig. 1-3, a fire-retardant tape covering 300 is wound around the outer sidewall of the filling layer 200, the fire-retardant tape covering 300 including:

the first wrapping layer 310 is wrapped on the outer wall of the filling layer 200 in a double-layer overlapping manner, and the first wrapping layer 310 is a glass fiber tape wrapping layer;

the fireproof layer 320 is coated on the outer side wall of the first wrapping layer 310, and the fireproof layer 320 is a fireproof mud oxygen-insulating layer, so that the oxygen-insulating and fireproof capacity of the cable can be effectively improved;

the second wrapping layer 330 is wrapped on the outer wall of the fire-proof layer 320 in a double-layer overlapping manner, and the second wrapping layer 330 is a glass fiber tape wrapping layer;

referring to fig. 1 and fig. 3 again, the outer sheath 400 is coated on the outer side wall of the second wrapping layer 330, the outer sheath 400 is a low smoke halogen-free polyolefin sheath, and the polyolefin has low relative density, good chemical resistance and good water resistance; good mechanical strength and electrical insulation property.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a flexible fireproof cable of fire-retardant mineral substance insulation of B1 level which characterized in that: the method comprises the following steps:

three inner cores (100), the three inner cores (100) being twisted together;

the filling layer (200) is coated on the outer side walls of the three inner cores (100);

a fire-stop strip cladding (300), the fire-stop strip cladding (300) being wound on an outer sidewall of the filler layer (200);

an outer jacket (400), the outer jacket (400) being coated on an outer sidewall of the fire-protecting band coating (300).

2. The flexible fire-protected cable with flame retardant mineral insulation of grade B1 as claimed in claim 1, wherein: the inner core (100) comprises:

a copper-core conductor (110);

the mica layer (120), the mica layer (120) is coated on the outer side wall of the copper core conductor (110);

the inner insulating layer (130), the inner insulating layer (130) is coated on the outer side wall of the mica layer (120);

the outer insulating layer (140) covers the outer side wall of the inner insulating layer (130).

3. The flexible fire-resistant cable with flame retardant mineral insulation of grade B1 as claimed in claim 2, wherein: the inner insulating layer (130) is a ceramic silicon rubber insulating layer, and the outer insulating layer (140) is a plastic insulating layer.

4. The flexible fire-protected cable with flame retardant mineral insulation of grade B1 as claimed in claim 1, wherein: the fire-stop strip cladding (300) comprises:

a first wrapping layer (310);

the fireproof layer (320) is coated on the outer side wall of the first wrapping layer (310);

the second is around covering (330), the second is in around covering (330) cladding on the outer wall of flame retardant coating (320).

5. The flexible fire-protected cable with flame retardant mineral insulation of grade B1 as claimed in claim 4, wherein: first around covering (310) and second around covering (330) be glass fiber tape around the covering, flame retardant coating (320) are fire prevention mud and separate the oxygen layer.

6. The flexible fire-protected cable with flame retardant mineral insulation of grade B1 as claimed in claim 1, wherein: the filling layer (200) is a refractory mortar filling layer.

7. The flexible fire-protected cable with flame retardant mineral insulation of grade B1 as claimed in claim 1, wherein: the outer sheath (400) is a low-smoke halogen-free polyolefin sheath.