CN210865716U

CN210865716U - Fire-retardant power cable of fire prevention that insulating nature is good

Info

Publication number: CN210865716U
Application number: CN202020053582.0U
Authority: CN
Inventors: 孙华荣
Original assignee: Yingtan Jinhai Wire And Cable Co ltd
Current assignee: Yingtan Jinhai Wire And Cable Co ltd
Priority date: 2020-01-11
Filing date: 2020-01-11
Publication date: 2020-06-26
Anticipated expiration: 2030-01-11

Abstract

The utility model provides a fire prevention fire-retardant power cable that insulating nature is good, including the insulated wire core, be equipped with the conductor in the insulated wire core, the surface of conductor is equipped with flame retardant coating and insulating layer, be equipped with the filling layer between the insulated wire core, the surface of filling layer is equipped with interior fire retardant coating, the surface of interior fire retardant coating is equipped with netted casing ply, the surface of netted casing ply is equipped with the sponge layer, it has the sponge ball to inlay in the sponge layer, the surface of sponge layer is equipped with outer fire retardant coating, the surface on outer fire retardant coating is equipped with the waterproof layer, the surface of waterproof layer is equipped with the sheath, the surperficial fixedly connected with steel wire ring of sheath, fixedly connected with wearing layer. The utility model relates to a rationally, the security performance is high, has set up interior flame retardant coating and outer flame retardant coating sheath, and the steel ring improves the fire prevention flame retardant property of cable, and insulating nature, wearability are not fragile, increase service life.

Description

Fire-retardant power cable of fire prevention that insulating nature is good

Technical Field

The utility model relates to a power cable technical field especially relates to a fire prevention fire-retardant power cable that insulating nature is good.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are used in the trunk lines of power systems for transmission and distribution. Along with the development of society, the power consumption also increases thereupon, require the current-carrying capacity of cable bigger and bigger, the continuous increase of high voltage power cable's conductive core cross-section, but present high voltage power cable's insulating and flame retardant efficiency is not good, the user is twining or the easy health of installing electrocute, and insulating effect difference can make the cable not block water, also can make cable and ground friction back desquamate and damage, can not effectual isolated when the conflagration takes place, can increase the conflagration danger, for this we have designed a fire prevention flame retardant power cable that insulating nature is good.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a fire prevention flame retardant power cable that insulating nature is good.

The utility model adopts the technical proposal that: the fireproof flame-retardant power cable with good insulativity comprises an insulating wire core, a conductor is arranged in the insulating wire core, a flame-retardant layer and an insulating layer are arranged on the outer surface of the conductor, a filling layer is arranged between the insulating wire cores, an inner flame-retardant layer is arranged on the outer surface of the filling layer, a net-shaped framework layer is arranged on the outer surface of the inner flame-retardant layer, a sponge layer is arranged on the outer surface of the net-shaped framework layer, a sponge ball is embedded in the sponge layer, an outer flame-retardant layer is arranged on the outer surface of the sponge layer, a waterproof layer is arranged on the outer surface of the outer flame-retardant layer, a sheath is arranged on the outer surface of the waterproof layer, a steel wire ring is fixedly connected to the.

Furthermore, 3 insulating core are equipped with, improve the current-carrying capacity of cable.

Furthermore, the quantity of sponge ball is 15 to the equal distance between two adjacent sponge balls, the ability and the security performance of blocking water of reinforcing cable.

Furthermore, the inner fillers of the inner flame-retardant layer and the outer flame-retardant layer are halogen-free cross-linked polyethylene flame-retardant materials which have good insulativity, flame retardance and environmental friendliness, and are less in smoke and free of toxic gas during combustion, so that the safety performance of the power cable is enhanced.

Further, the thickness of the inner flame-retardant layer is the same as that of the outer flame-retardant layer and is 3-5 mm.

Furthermore, the reticular framework layer is a framework of a cross network structure consisting of metal wires or refractory fiber wires, and has a fixing effect on the wire core, so that the structural strength of the wire core is enhanced.

The utility model has the advantages that: the utility model is provided with the inner flame-retardant layer and the outer flame-retardant layer, which are double flame-retardant, thereby enhancing the flame-retardant performance of the cable and effectively protecting the cable conductor; 2. the sponge layer and the net-shaped framework layer are arranged, so that the fixing effect on the cable is achieved, the shock resistance and the compression resistance of the cable are improved, and the damage caused by external impact is avoided; 3. the cable is provided with the sheath, the steel wire ring and the wear-resistant layer, so that when the power cable is dragged on the ground, the steel wire ring touches the ground, the surface of the power cable is not easy to wear by utilizing the wear resistance of the wear-resistant layer, and the insulation effect of the power cable is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the steel wire ring of the present invention.

The cable comprises a conductor 1, a flame retardant coating 2, an insulating layer 3, a filling layer 4, an inner flame retardant coating 5, a reticular skeleton layer 6, a sponge layer 7, a sponge ball 71, an outer flame retardant coating 8, a waterproof layer 9, a sheath 10, a steel wire ring 11 and a wear-resistant layer 12.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Embodiments of the invention are shown in the drawings, but the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as providing a more thorough and complete disclosure of the invention.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for illustrative purposes only, and the present invention is further described below with reference to the accompanying drawings for making the technical means, the creative features, the achievement purposes and the functions of the present invention easy to understand.

As shown in fig. 1-2, a fireproof flame-retardant power cable with good insulation property includes an insulating wire core, a conductor 1 is arranged in the insulating wire core, a flame-retardant layer 2 and an insulating layer 3 are arranged on the outer surface of the conductor 1, filling layers 4 are arranged between the insulating wire cores, an inner flame-retardant layer 5 is arranged on the outer surface of each filling layer 4, a reticular framework layer 6 is arranged on the outer surface of each inner flame-retardant layer 5, a sponge layer 7 is arranged on the outer surface of each reticular framework layer 6, a sponge ball 71 is embedded in each sponge layer 7, an outer flame-retardant layer 8 is arranged on the outer surface of each sponge layer 7, a waterproof layer 9 is arranged on the outer surface of each outer flame-retardant layer 8, a sheath 10 is arranged on the outer surface of each waterproof layer 9, a steel wire ring 11 is fixedly connected to the surface of each sheath 10.

In the structure of the utility model, 3 insulated wire cores are arranged, which improves the current-carrying capacity of the cable; the number of the sponge balls 71 is 15, and the distances between every two adjacent sponge balls 71 are equal, so that the water blocking capability and the safety performance of the cable are enhanced; the inner fillers of the inner flame-retardant layer 5 and the outer flame-retardant layer 8 are halogen-free cross-linked polyethylene flame-retardant materials which have good insulativity, flame retardance and environmental friendliness, can enhance the insulativity of the cable, has less smoke and can not generate toxic gas during combustion, and enhances the safety performance of the power cable; the thickness of the inner flame-retardant layer 5 is the same as that of the outer flame-retardant layer 8, and is 3-5 mm; the reticular skeleton layer 6 is a skeleton of a cross-shaped network structure consisting of metal wires or refractory fiber wires, and has a fixing effect on the wire core and enhances the structural strength of the wire core.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a fire prevention fire-retardant power cable that insulating nature is good, includes the insulated wire core, be equipped with conductor (1) in the insulated wire core, characterized by: the outer surface of the conductor (1) is provided with a fire-retardant layer (2) and an insulating layer (3), a filling layer (4) is arranged between the insulating wire cores, the outer surface of the filling layer (4) is provided with an inner flame-retardant layer (5), the outer surface of the inner flame-retardant layer (5) is provided with a net-shaped framework layer (6), the outer surface of the net-shaped framework layer (6) is provided with a sponge layer (7), a sponge ball (71) is embedded in the sponge layer (7), the outer surface of the sponge layer (7) is provided with an outer flame-retardant layer (8), the outer surface of the outer flame-retardant layer (8) is provided with a waterproof layer (9), the outer surface of the waterproof layer (9) is provided with a sheath (10), the surface of the sheath (10) is fixedly connected with a steel wire ring (11), and the outer surface of.

2. The fireproof flame-retardant power cable with good insulation property as claimed in claim 1, wherein: the number of the insulated wire cores is 3.

3. The fireproof flame-retardant power cable with good insulation property as claimed in claim 1, wherein: the number of the sponge balls (71) is 15, and the distances between every two adjacent sponge balls (71) are equal.

4. The fireproof flame-retardant power cable with good insulation property as claimed in claim 1, wherein: the inner fillers of the inner flame-retardant layer (5) and the outer flame-retardant layer (8) are halogen-free cross-linked polyethylene flame-retardant materials.

5. The fireproof flame-retardant power cable with good insulation property as claimed in claim 4, wherein: the thickness of the inner flame-retardant layer (5) is the same as that of the outer flame-retardant layer (8), and the thickness is 3-5 mm.

6. The fireproof flame-retardant power cable with good insulation property as claimed in claim 1, wherein: the reticular framework layer (6) is a framework of a cross-shaped network structure consisting of metal wires or refractory fiber wires.