CN210575182U

CN210575182U - Soft sheath wire

Info

Publication number: CN210575182U
Application number: CN201921703615.5U
Authority: CN
Inventors: 唐金标; 陈瑞明; 王志均
Original assignee: Shanghai Weihang Wire And Cable Co Ltd
Current assignee: Shanghai Weihang Wire And Cable Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a soft sheath line, it includes a soft sheath line, including the anaerobic copper core body, the outer cover of anaerobic copper core body is equipped with the protective layer, and the protective layer includes insulating heat-resisting layer, and insulating heat-resisting layer outside is hugged closely in proper order and is provided with waterproof layer, heat-resisting enhancement layer. The utility model discloses have the better effect of soft protecting wire cover high temperature resistance. The problem of soft wire sheath high temperature resistance relatively poor is solved.

Description

Soft sheath wire

Technical Field

The utility model belongs to the technical field of the wire and cable technique and specifically relates to a soft sheath line is related to.

Background

The sheath wire can be actually understood as two or three parallel BV wires, the BV wires are originally provided with insulating rubber, the sheath wire is formed by wrapping a layer of rubber outside the three or two parallel BV wires, the sheath wire is also the most common household wire and usually consists of three cores or two cores, and the common sheath wire is almost in circular arrangement.

The existing wire and cable insulation and sheath materials are almost all organic materials or partially contain organic materials including polytetrafluoroethylene materials, the melting point is not more than 400 ℃, and the using temperature is not more than 350 ℃. Then, in high-temperature areas of other industries such as metallurgy, electric heating devices, heating pipes, ovens, thermocouples, temperature sensors, electric furnaces, furnaces and the like, the traditional electric wire cannot meet the requirement of high temperature resistance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a better application range wider soft wire sheath of high temperature resistance.

The method is realized by the following technical scheme: the utility model provides a soft sheathed wire, includes the oxygen-free copper core body, and the outside cover of oxygen-free copper core body is equipped with the protective layer, and the protective layer includes insulating heat-resistant layer, and insulating heat-resistant layer outside is hugged closely in proper order and is provided with waterproof layer, heat-resistant enhancement layer.

By adopting the technical scheme, the insulating heat-resistant layer improves the upper limit of the service temperature of the soft wire sheath; the waterproof layer is arranged to prevent water from invading to corrode and damage the structure of the insulating heat-resistant layer; function of the heat-resistant reinforcing layer: when the oxygen-free copper core has extreme conditions, the insulating heat-resistant layer and the waterproof layer are damaged, the heat-resistant enhancement layer plays a role in limiting and protecting, the influence of the extreme conditions is reduced to the minimum, and effective safety protection is provided; when the external limit condition appears, the heat-resistant enhancement layer effectively protects the insulating heat-resistant layer, the waterproof layer and the oxygen-free copper core body, and the operation stability and the safety of the electrical equipment are ensured.

The utility model discloses further set up to: the insulating heat-resistant layer comprises at least two insulating unit layers.

Through adopting above-mentioned technical scheme, insulating heat-resistant layer can effectively protect the anaerobic copper core, and when the anaerobic copper core reached the extreme temperature, insulating heat-resistant layer structure was not destroyed can effectively guarantee safe in utilizationly.

The utility model discloses further set up to: the insulating unit layers comprise an insulating layer located outside the oxygen-free copper core and a heat absorbing layer located outside the insulating layer.

By adopting the technical scheme, the insulating layer is made of the inorganic high-temperature-resistant composite material, and the excellent fiber strength, elastic modulus and heat resistance of the insulating layer provide efficient protection for the oxygen-free copper core body, so that the insulating layer can be used at high temperature; the heat absorption layer is made of a solid-solid phase change material, heat is absorbed and released through crystal form conversion, the heat absorption layer has the advantages of small volume change, no toxicity and no corrosion, heat generated by the oxygen-free copper core body can be effectively absorbed through the arrangement of the heat absorption layer, and heat resistance is further improved.

The utility model discloses further set up to: a plurality of cavities which are mutually spaced and arranged around the circle center of the insulating layer are formed between the insulating layer and the heat absorbing layer; the section of the cavity is arc-shaped, and the toughening body is filled in the cavity.

Through adopting above-mentioned technical scheme, the cross-section is curved cavity and toughening body has increased the anti bending property of soft protecting wire cover, prevents to be led to protective layer structure inner structure to be destroyed because of the bending and influences the protection effect.

The utility model discloses further set up to: the heat-resistant reinforcement layer comprises at least two layers of heat-resistant units.

By adopting the technical scheme, the heat-resistant enhancement layer consisting of the multiple heat-resistant unit layers has the advantage that the upper limit of the service temperature of the soft sheath wire is better improved; the heat source damages the heat-resistant enhancement layer by damaging the heat-resistant unit layers layer by layer from outside to inside, so that the heat-resistant enhancement layer is completely protected for a long time and the oxygen-free copper core body is better protected.

The utility model discloses further set up to: the heat-resisting unit layers comprise at least two substrate layers, and a glass fiber reinforced layer is arranged between the adjacent substrate layers.

By adopting the technical scheme, the base layer is made of the inorganic insulating material, so that the heat resistance is good; the glass fiber reinforced layer is D glass fiber which is insulated and completely non-combustible, and the strength of the heat-resisting unit layer is enhanced, and the oxygen-free copper core body is protected better by heat resistance.

The utility model discloses further set up to: the heat-resistant reinforced outer part is provided with a fireproof layer in a clinging manner.

By adopting the technical scheme, the fireproof layer effectively isolates the influence of an external heat source; the electric wire is prevented from being destructively damaged by external environment fire to a certain extent due to non-combustion, and the electric wire is safer to use.

The utility model discloses further set up to: the fire-blocking layer is coated with a protective coating.

By adopting the technical scheme, the protective coating improves the weather resistance of the soft sheath wire, so that the soft sheath wire is not easy to corrode and oxidize, and the good service life of the soft sheath wire is ensured.

To sum up, the utility model has the advantages of it is following:

1. through insulating heat-resistant layer, waterproof layer, heat-resistant enhancement layer, flame retardant coating, realize that this product can use in the environment of high temperature, totally isolated splash and flame, under continuous high temperature exposes, can guarantee structural stability and security.

2. Through protective layer, protective coating, promoted the utility model discloses a weatherability makes it be difficult for by corruption and oxidation, guarantees its good life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the insulating heat-resistant layer.

Fig. 3 is a sectional view of the heat-resistant reinforcing layer.

In the figure, 1, an oxygen-free copper core; 2. an insulating heat-resistant layer; 20. an integral insulating heat-resistant layer; 21. an insulating unit layer; 211. an insulating layer; 212. a heat absorbing layer; 213. a cavity; 214. toughening body; 3. a waterproof layer; 4. a heat resistant reinforcement layer; 41. a heat-resistant unit layer; 411. a substrate layer; 412. a glass fiber reinforced layer; 5. a fire barrier layer; 6. a protective coating; 7. and a protective layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a flexible sheath line, including three anaerobic copper core 1, the outside cover of anaerobic copper core 1 is equipped with protective layer 7, and protective layer 7 includes insulating heat-resistant layer 2, and the insulating heat-resistant layer 2 outside of three anaerobic copper core 1 is hugged closely in proper order and is provided with whole insulating heat-resistant layer 20, waterproof layer 3, heat-resistant enhancement layer 4 and flame retardant coating 5. The fire-proof layer 5 is preferably made of alumina/aluminum material, the heat-resistant enhancement layer 4 is closely sleeved with a layer of aluminum, and the outer surface of the aluminum is passivated to form the fire-proof layer 5. The fireproof layer 5 effectively isolates the influence of an external heat source; the fireproof layer 5 does not burn to a certain degree, so that the electric wire is prevented from being destructively damaged by external environment fire, and the use is safer. In order to prolong the service life of the product, the surface of the fire-proof layer 5 is coated with a protective coating 6, preferably oxide ceramic paint, and the oxide ceramic paint coats the surface of the fire-proof layer 5, so that the internal structure of the fire-proof layer 5 is not easily corroded and oxidized, and the good service life of the fire-proof layer is ensured.

Referring to fig. 1 and 2, the insulating heat-resistant layer 2 and the integral insulating heat-resistant layer 20 have the same structure. Taking the insulating heat-resistant layer 2 as an example, the insulating heat-resistant layer 2 comprises two insulating unit layers 21, and the insulating unit layers 21 comprise an insulating layer 211 positioned outside the oxygen-free copper core 1 and a heat absorbing layer 212 positioned outside the insulating layer 211. The insulating layer 211 is preferably a high temperature resistant metal sheet + oxide ceramic coating, specifically a tungsten foil/oxide ceramic, the upper limit of the use temperature is 1900 ℃, and excellent heat resistance provides efficient protection for the oxygen-free copper core, so that the oxygen-free copper core can be used at high temperature. The heat absorption layer 212 is preferably a modified paraffin solid-solid phase change material, absorbs and releases heat through the conversion of crystal forms, has the advantages of small volume change, no toxicity and no corrosion, and can effectively absorb heat generated by the oxygen-free copper core body and further improve heat resistance. A plurality of cavities 213 which are spaced from each other and are arranged around the center of the insulating layer 211 are formed between the insulating layer 211 and the heat absorbing layer 212, the cross section of each cavity 213 is arc-shaped, the cavity 213 is filled with a toughening body 214, and the toughening body 214 is preferably made of aluminum alloy. The cavity 213 of the arc-shaped structure and the toughening body 214 made of the aluminum alloy material increase the bending resistance of the soft wire sheath, and prevent the protection effect from being influenced by the damage of the inside of the protective layer 7 structure caused by bending.

Referring to fig. 1 and 3, the heat resistance enhancement 4 includes at least two layers 41 of heat resistant unit. The heat-resisting unit layer 41 comprises at least two substrate layers 411, and a glass fiber reinforced layer 412 is arranged between the adjacent substrate layers 411. The substrate layer 411 is preferably high-temperature-resistant alumina ceramic, and the upper limit of the use temperature is 1800 ℃; the glass fiber reinforced layer 412 is preferably made of C glass fiber with electric corrosion resistance, and the C glass fiber/alumina ceramic composite material obtained by compounding the glass fiber reinforced layer and the C glass fiber/alumina ceramic composite material enhances the corrosion resistance and the heat resistance of the heat-resistant unit layer 41 and better protects the oxygen-free copper core. The heat-resistant enhancement layer 4 consisting of the plurality of layers of the heat-resistant units 41 effectively improves the upper limit of the service temperature of the soft sheath wire; the heat source damage heat-resistant enhancement layer 4 needs to damage the heat-resistant unit layers 41 layer by layer from outside to inside, so that the heat-resistant enhancement layer needs to be protected for a long time completely, and the oxygen-free copper core body is protected better. Role of the heat-resistant reinforcing layer 41: when the oxygen-free copper core body 1 has a limit condition, the insulating heat-resistant layer 2 and the waterproof layer 3 are damaged, and the heat-resistant enhancement layer 4 plays a role in limiting and protecting, so that the influence of the limit condition is reduced to the minimum, and effective safety protection is provided; when the external limit condition occurs, the heat-resistant enhancement layer 4 effectively protects the insulating heat-resistant layer 2, the waterproof layer 3 and the oxygen-free copper core 1, and the operation stability and safety of the electrical equipment are ensured.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a soft sheath line, includes oxygen-free copper core (1), and oxygen-free copper core (1) outside cover is equipped with protective layer (7), its characterized in that: the protective layer (7) comprises an insulating heat-resistant layer (2), and a waterproof layer (3) and a heat-resistant enhancement layer (4) are sequentially and closely arranged outside the insulating heat-resistant layer (2).

2. The flexible sheathed wire of claim 1, wherein: the insulating heat-resistant layer (2) comprises at least two insulating unit layers (21).

3. The flexible sheathed wire of claim 2, wherein: the insulating unit layer (21) comprises an insulating layer (211) located outside the oxygen-free copper core (1) and a heat absorbing layer (212) located outside the insulating layer (211).

4. A flexible sheathed wire according to claim 3, characterized in that: a plurality of cavities (213) which are mutually spaced and are arranged around the circle center of the insulating layer (211) are formed between the insulating layer (211) and the heat absorbing layer (212); the section of the cavity (213) is arc-shaped, and the toughening body (214) is filled in the cavity (213).

5. The flexible sheathed wire of claim 1, wherein: the heat-resistant reinforcement layer (4) comprises at least two layers (41) of heat-resistant units.

6. The flexible sheathed wire of claim 5, wherein: the heat-resisting unit layer (41) comprises at least two base layers (411), and a glass fiber reinforced layer (412) is arranged between every two adjacent base layers (411).

7. The flexible sheathed wire of claim 1, wherein: and a fireproof layer (5) is closely attached to the outer part of the heat-resistant reinforcing layer (4).

8. The flexible sheathed wire of claim 7, wherein: and a protective coating (6) is coated outside the fireproof layer (5).