CN210956255U - Fire-proof cable - Google Patents

Abstract

The fire insulation cable comprises three power wire cores, wherein the three power wire cores are sequentially provided with a first conductor, a first insulating layer and a second insulating layer from inside to outside; a shielding layer; an inner liner layer; and the control wire core comprises a second conductor and a third insulating layer outer protective layer which are sequentially arranged from inside to outside. The utility model has the advantages that: 1. the power electric energy and the control signal can be transmitted simultaneously, the mutual interference between the power electric energy and the control signal can be realized, and the electric energy and the information transmission are reliable and accurate; 2. the electromagnetic induction resistance and power line conducted interference resistance are good, the electromagnetic radiation of the whole transmission system can be reduced, and the safe operation of cables and other equipment is facilitated; 3. the design is reasonable, the structure is compact, and the laying is light; 4. the service life is long.

Description

Fire-proof cable

Technical Field

The utility model relates to a transmission equipment technical field, more specifically say, in particular to separate fire cable.

Background

The rigid and flexible fire-proof cables commonly seen in the market at present use inorganic mineral substances such as magnesium oxide, synthetic mica tapes and the like as an insulating layer and a metal sheath to achieve the purpose of fire prevention, and although the fire-proof cables with the two structures have good fire-proof and fire-proof performances, special equipment is required to be equipped for production, so that the defects of large investment and high cost exist.

SUMMERY OF THE UTILITY MODEL

Problem (A)

In summary, how to provide a fire-proof cable which is simple and convenient to produce and has low requirements on equipment becomes a problem to be solved urgently by the technical personnel in the field.

(II) technical scheme

The utility model provides a separate fire cable, include:

a fire insulated cable, comprising:

the cable comprises main cable cores, wherein each main cable core comprises a conductor, a fire-proof layer and a color separation protective layer which are sequentially arranged from inside to outside, the fire-proof layer is of a layer structure formed by wrapping a ceramic fireproof and fire-resistant composite tape, the color separation protective layer is of a layer structure made of a ceramic halogen-free low-smoke flame-retardant polyolefin material, the number of the main cable cores is three, the three main cable cores are closely attached, filling layers are arranged on the outer sides of all the main cable cores, and a cable main body with a circular cross section is formed;

the outer protective layer, certainly the lateral surface of cable main part is outside outer protective layer is including isolation layer and outer jacket in proper order.

Preferably, the filling layer is made of ceramic fireproof and fireproof filling ropes;

the ceramic fireproof and fireproof filling rope is formed by twisting and weaving a fireproof and fireproof composite belt and a glass fiber rope.

Preferably, the isolation layer is of a layer structure formed by wrapping a ceramic fireproof and fireproof composite tape;

the outer protective layer is a layer structure formed by extruding ceramic halogen-free low-smoke flame-retardant refractory materials.

Preferably, the conductor is one of a metal-plated layer annealed soft copper conductor, a metal-non-plated layer annealed soft copper conductor, a bare copper conductor or a metal-plated layer annealed copper conductor.

(III) advantageous effects

Through the structure design, the utility model has the advantages of: 1. the ceramic fireproof and fireproof composite tape is adopted to replace magnesium oxide and a synthetic mica tape as a fireproof layer, so that the fireproof and fireproof composite tape has the advantages of simple processing, easy treatment and good production environment, and has better insulating and fireproof performance; 2. ceramic low-smoke halogen-free polyolefin fireproof plastic is extruded outside the fireproof layer to serve as a color separation protective layer, so that the design is easy for wire core identification, the problems that the traditional fireproof cable is easy to absorb moisture and cannot be well treated, and the insulation resistance is unqualified are solved, and the wide adaptability of the cable is improved; 3. the whole structure of the cable is made of ceramic materials, so that a fire source can be effectively isolated, and the electricity safety is ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of a fire-insulated cable according to an embodiment of the present invention;

in fig. 1, the correspondence between the component names and the reference numbers is:

conductor 1, flame retardant coating 2, colour separation protective layer 3, filling layer 4, isolation layer 5 and outer jacket 6.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 is a schematic cross-sectional structure diagram of a fire-proof cable according to an embodiment of the present invention.

The utility model provides a fire-proof cable, the principal conductor core includes conductor 1, flame retardant coating 2 and colour separation protective layer 3 that from inside to outside set gradually, the flame retardant coating is the layer structure that pottery fire prevention fire-resistant composite tape was formed around the package, the colour separation protective layer is the layer structure that pottery does not have the steamed low cigarette fire-retardant polyolefin material of halogen and makes, the principal conductor core is provided with threely, three the principal conductor core closely laminates, is provided with filling layer 4 in all the outside of principal conductor core and is formed with the cable main part that the cross section is circular; the outer protective layer, certainly the lateral surface of cable main part is outside outer protective layer includes isolation layer 5 and outer jacket 6 in proper order.

The utility model provides a but installation laying convenience, production simple process, the lower fire-insulated cable of cost relatively, but this cable wide application in places such as filling station, chemical industry metallurgical enterprise, airport, hotel, stadium, library, high-rise building, shopping mall and ancient building that require higher to fire prevention, security performance. This cable adopts brand-new design structure and novel environmental protection material, adopts the fire-resistant composite tape of pottery fire prevention to replace magnesium oxide and synthetic mica tape as the flame retardant coating, and the fire-resistant plastics of pottery low smoke and zero halogen polyolefin of crowded package are as the colour separation protective layer outside the flame retardant coating, and such design both easily sinle silk discernment has solved traditional fire-resistant cable again and has easily absorbed moisture and handle the unqualified problem of not good insulation resistance, has improved the extensive adaptability of cable. The whole structure of the cable is made of ceramic materials, so that a fire source can be effectively isolated, and the electricity safety is ensured.

The fire-proof cable comprises a ① conductor 1 made of a 1 st or 2 nd metal-plated layer or a non-metal-plated layer annealed soft copper conductor conforming to GB/T3956, or a 5 th bare copper conductor or a metal-plated layer annealed copper conductor, a ② fireproof layer 2 made of a wrapped ceramic fireproof fire-resistant composite tape which can replace a mica tape and has the advantages of good insulation performance and better fire resistance, compared with a mica tape, the fire-proof cable is simple and easy to process, does not need drying pretreatment, has good production environment, and the like, the ceramic fireproof and fire-resistant composite tape is made of a special silicon rubber wrapped fire-resistant fireproof and fire-resistant material compounded by calendering a ceramic fireproof and fire-resistant alkali-free glass fiber cloth, tests prove that the fire-proof cable is quickly fired into a ceramic-like hard complete shell under the environment of 600-3000 ℃ fire, the longer ablation time, the higher temperature, the harder shell is as an armor, the line is well protected well as a fire-resistant cable, the fire-resistant cable is made of a fire-resistant and fire-resistant composite cable with a fire-resistant ceramic rope, the fire-resistant cable has the advantages of a fire-resistant cable, such as a fire-resistant cable, a fire-resistant cable-resistant composite cable-resistant cable-insulating layer made of a fire-resistant cable-insulating cable-resistant cable-insulating cable-resistant cable-insulating cable.

Through the structure design, the utility model has the advantages of: 1. the ceramic fireproof and fireproof composite tape is adopted to replace magnesium oxide and a synthetic mica tape as a fireproof layer, so that the fireproof and fireproof composite tape has the advantages of simple processing, easy treatment and good production environment, and has better insulating and fireproof performance; 2. ceramic low-smoke halogen-free polyolefin fireproof plastic is extruded outside the fireproof layer to serve as a color separation protective layer, so that the design is easy for wire core identification, the problems that the traditional fireproof cable is easy to absorb moisture and cannot be well treated, and the insulation resistance is unqualified are solved, and the wide adaptability of the cable is improved; 3. the whole structure of the cable is made of ceramic materials, so that a fire source can be effectively isolated, and the electricity safety is ensured.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (4)

1. A fire insulated cable, comprising:

the cable comprises main cable cores, wherein each main cable core comprises a conductor (1), a fire-proof layer (2) and color separation protective layers (3) which are sequentially arranged from inside to outside, each fire-proof layer is of a layer structure formed by wrapping a ceramic fireproof composite tape, each color separation protective layer is of a layer structure made of a ceramic halogen-free low-smoke flame-retardant polyolefin material, the number of the main cable cores is three, the three main cable cores are closely attached, and filling layers (4) are arranged on the outer sides of all the main cable cores and form a cable main body with a circular cross section;

the outer protective layer, from the lateral surface of cable main part is outside, outer protective layer is including isolation layer (5) and outer jacket (6) in proper order.

2. The fire insulation cable according to claim 1,

the filling layer is made of ceramic fireproof and fireproof filling ropes;

the ceramic fireproof and fireproof filling rope is formed by twisting and weaving a fireproof and fireproof composite belt and a glass fiber rope.

3. The fire insulation cable of claim 2,

the isolating layer is of a layer structure formed by wrapping a ceramic fireproof and fireproof composite tape;

the outer protective layer is a layer structure formed by extruding ceramic halogen-free low-smoke flame-retardant refractory materials.

4. A fire insulated cable according to any one of claims 1 to 3,

the conductor is one of a metal-plated layer annealed soft copper conductor, a metal-non-plated layer annealed soft copper conductor, a bare copper conductor or a metal-plated layer annealed copper conductor.

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