CN207624437U

CN207624437U - A kind of construction of cable being not easy short circuit burning

Info

Publication number: CN207624437U
Application number: CN201721511840.XU
Authority: CN
Inventors: 林健武
Original assignee: Huizhou Golden Sunshine Electromechanical Technology Co Ltd
Current assignee: Huizhou Golden Sunshine Electromechanical Technology Co Ltd
Priority date: 2017-11-13
Filing date: 2017-11-13
Publication date: 2018-07-17
Anticipated expiration: 2027-11-13

Abstract

The utility model is related to construction of cable technical field, more particularly to a kind of construction of cable being not easy short circuit burning, including core wire, fireprotection layer, insulating layer and sheath；The core wire, insulating layer and sheath from-inner-to-outer are socketed to form；The fireprotection layer is layer of inert, between the core wire and insulating layer.It is not in the occurrence of cable fire leads to disaster in the case that the proposition of the utility model enables cable cause temperature excessively high due to internal core short circuit.

Description

A kind of construction of cable being not easy short circuit burning

Technical field

The utility model is related to construction of cable technical field, more particularly to a kind of construction of cable being not easy short circuit burning.

Background technology

Cable is typically by several or the cable of similar rope made of several groups of wire strandings, between every group of conducting wire mutually absolutely Edge, and be often twisted into around a center, entire outside is enclosed with the coating of high-insulation.Multi rack is located at aerial or is mounted in ground Under, it is water-bed, be used for telecommunication or power Transmission.

Traditional cable in the case that and sheath excessive in conveying voltage is impaired, holds since core wire is directly contacted with insulating layer It easily leads to core wire to be in direct contact with sheath or insulating layer, to improve the temperature of sheath or insulating layer, when the two temperature reaches combustion When point, in the case of extraneous oxygen abundance, it is easy to happen the phenomenon that short circuit is burnt, causes personal injury or property loss.

Invention content

The goal of the invention of the utility model be in order to solve traditional cable since core wire is directly contacted with insulating layer or sheath, Cause when core wire overheats, is easy to cause insulating layer and sheath and burns and asking for personal injury and property loss occur Topic.

To solve the above-mentioned problems, the utility model proposes it is a kind of be not easy short circuit burning the construction of cable, including core wire, Fireprotection layer, insulating layer and sheath；The core wire, insulating layer and sheath from-inner-to-outer are socketed to form；The fireprotection layer is indifferent gas Body layer, between the core wire and insulating layer.

Preferably, including wrap film；The wrap film quantity is several, and is evenly affixed on the core wire；The package The making material of film is poor ductility, and low-melting material.

Preferably, including metal screen layer；The metal screen layer is between the insulating layer and sheath.

Preferably, the sheath includes the first sheath and the second sheath；Second sheath is socketed on first sheath Outside；First sheath is wrapped in outside the metal screen layer.

Preferably, the copper wire that the core wire is twisted by several copper wires forms；The system of the insulating layer and the first sheath It is PVC material to make material；The making material of second sheath is high-density polyethylene material.

From the foregoing, it will be observed that following advantageous effect can be obtained using the utility model：

First, the utility model is provided with fireprotection layer in core wire and insulation interlayer, and core wire is enabled directly not connect with insulating layer It touches, in the case where core wire overheats, will not directly promote the temperature of insulating layer, and since fireprotection layer is inert gas, cost It is low, and ensure that protective layer is fixed between core wire and insulating layer, successfully reach the purpose of setting fireprotection layer；

Second, the outsourcing wrapping of fireprotection layer enables inert gas that can only exist in specific region, enables inert gas that can fix Between core wire and insulating layer, and when external temperature is excessively high or tail portion core wire when the temperature is excessively high, contact package membrane substance first, Poor ductility, i.e., when inert gas heat expands, wrap film bursts, and inert gas comes into full contact with comburant, enable its burn by Resistance is even extinguished, and to reach fireproof effect, fusing point is low to be easy to melt when enabling it heated, and the inert gas in it is enabled to be easier The object high with temperature contacts, and further ensures that fireprotection layer plays its effect；

Third adds shielded layer in the structure of original cable, enables cable not interfered by external electromagnetic, ensure that itself The stability of performance has positive effect for the conveying of stablizing of electric power, ensure that conveyor zones stable power-supplying；

4th, the first sheath is in direct contact with insulating layer, and core wire, fireprotection layer and insulating layer relative position is enabled to be fixed, And the construction of cable inside the protection of the second sheath is not easy to be damaged under the effect of external force；

5th, raw material of the copper wire as core wire ensure that the conductivity of core wire, and insulating layer and the first sheath are by PVC materials Its ductility of material composition is strong, enables the protected degree of the structure of inside cable high, and the second sheath is by high-density polyethylene material structure Strong at its hardness, can protecting cable, internal structure is not destroyed under external force.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, other drawings may also be obtained based on these drawings.

Fig. 1 is the sectional view of the utility model embodiment.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.Obviously, described embodiment is only the utility model section Example, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.

As shown in Figure 1, in order to solve traditional cable since core wire 10 is directly contacted with insulating layer 30 or sheath, cause in core When line 10 overheats, it is easy to cause insulating layer 30 and burns with sheath and the problem of personal injury and property loss occur, this Embodiment proposes a kind of cable being not easy short circuit burning, includes mainly core wire 10, fireprotection layer 20, insulating layer 30 and sheath； Core wire 10 is located at the center of cable, outside be socketed with fireprotection layer 20, insulating layer 30 and sheath successively；Fireprotection layer 20 is specially lazy Property gas blanket.Since cable is mostly conveying high-pressure electricity, in the case of the impaired fever of internal core 10, it is in direct contact fireprotection layer 20, to which its raised temperature cannot be contacted with combustibles, to reach fireproof effect.

Wherein, inert gas is wrapped in wrap film 21；The making material of wrap film 21 is poor ductility, low-melting material Material.Wrap film 21 plays a part of inert gas being fixed between core wire 10 and insulating layer 30 in the present embodiment, and core wire 10 is short When road temperature increases, since the poor ductility and fusing point of wrap film 21 are low, when internal inert gas heat expansion or packet When wrapping 21 is melted, inert gas loses the restriction of wrap film 21 and is covered in the surface of core wire 10, isolation core wire 10 and insulation The contact of layer 30, enables the temperature of core wire 10 that cannot be transferred to insulating layer 30, to ensure in the case of 10 short circuit heating of core wire, Any combustibles cannot all be contacted with core wire 10, to achieve the effect that the present embodiment is fire-retardant.

Including metal screen layer 50；Metal screen layer 50 is between insulating layer 30 and sheath；Metal screen layer 50 is in original Have in the contact of cable, it is therefore prevented that the influence that external electromagnetic works to cable internal core 10 ensures the confession in cable transfer area Electrical stability reduces the fault condition of cable power supply.

Sheath is divided into the first sheath 41 and the second sheath 42 in the present embodiment；Wherein the first sheath 41 is socketed on metal screen It covers outside layer 50, the second sheath 42 is socketed on outside the first sheath 41；Core wire 10, fireprotection layer inside the presence order of first sheath 41 20, the relative position of insulating layer 30 and metal screen layer 50 is kept fixed, will not be away from one another, ensure that the stabilization of the construction of cable Property.Outermost layer structure of second sheath 42 as cable, has and protects cable overall structure with the course of work not by ectocine Effect.

Conductive center of the core wire 10 as cable is formed by the strong copper wire of electric conductivity, and copper wire is twisted shape by several copper wires At ensure that the flexibility of cable and the connectivity of its circuit；Insulating layer 30 and the first sheath 41 are by PVC material in cable It is made, it ensure that the ductility of the two, enables cable that bending action may be implemented, cable is allow to apply to various fields It closes, improves the practicability of cable in the present embodiment, and PVC material belongs to environment-friendly materials, meets the production requirement of modern society, together When reduce production cost；Second sheath 42 is then made by high-density polyethylene material, since the second sheath 42 will play it The effect of protective layer, it is necessary to assure its rigidity is better than internal structure, and wear-resisting, anti-fight, just can guarantee cable in transmission process In installation process, internal structure will not be caused to wreck due to the effect of external force, ensure the stability of the construction of cable, to Stable working condition is kept after enabling cable be powered.

The principle of the present embodiment is as follows：After cable is powered, core wire undertakes the effect to transmit electric power as conductor, but special In the case of, in the case of core wire short circuit, the temperature in core section region increases, and due to being covered with fireprotection layer outside it, it is high Temperature reacts with the wrap film of fireprotection layer, and wrap film is enabled to destroy, and internal inert gas meets core wire contact, blocking core wire with outside The contact of the insulating layer in portion will not contact with its external combustibles to enable under core wire short-circuit condition, prevent cable due to short circuit And the generation for the case where burning.

Embodiments described above does not constitute the restriction to the technical solution protection domain.It is any in above-mentioned implementation Modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution made by within the spirit and principle of mode Within enclosing.

Claims

1. a kind of construction of cable being not easy short circuit burning, feature are as follows：Including core wire, fireprotection layer, insulating layer and sheath；It is described Core wire, insulating layer and sheath from-inner-to-outer are socketed to form；The fireprotection layer is layer of inert, is located at the core wire and insulating layer Between.

2. a kind of construction of cable being not easy short circuit burning according to claim 1, feature are as follows：Including wrap film；Institute It is several to state wrap film quantity, and is evenly affixed on the core wire；The making material of the wrap film is poor ductility, and fusing point Low material.

3. a kind of construction of cable being not easy short circuit burning according to claim 2, feature are as follows：Including metallic shield Layer；The metal screen layer is between the insulating layer and sheath.

4. a kind of construction of cable being not easy short circuit burning according to claim 3, feature are as follows：The sheath includes the One sheath and the second sheath；Second sheath is socketed on outside first sheath；First sheath is wrapped in the metal Outside shielded layer.

5. a kind of construction of cable being not easy short circuit burning according to claim 4, feature are as follows：The core wire is by several The copper wire composition that root copper wire is twisted into；The making material of the insulating layer and the first sheath is PVC material；Second sheath Making material is high-density polyethylene material.