CN217035180U

CN217035180U - Flame-retardant high-voltage shielding wire

Info

Publication number: CN217035180U
Application number: CN202123186491.8U
Authority: CN
Inventors: 李军
Original assignee: Dongguan Weidi Electric Technology Co ltd
Current assignee: Dongguan Weidi Electric Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-22
Anticipated expiration: 2031-12-17

Abstract

The utility model provides a flame-retardant high-voltage shielding wire. The flame-retardant high-voltage shielding wire comprises an outer sheath, wherein an inner shielding layer is arranged in the outer sheath, and the inner shielding layer comprises a galvanized copper woven net layer and an aluminum foil tin paper layer. When the flame-retardant high-voltage shielding wire is used, the cable has good electromagnetic shielding wires through the double-layer shielding of the inner shielding layer consisting of the galvanized copper woven net layer and the aluminum foil tin paper layer, the galvanized copper woven net layer has good oxidation resistance and strong corrosion resistance, so that the service life of the cable is prolonged.

Description

Flame-retardant high-voltage shielding wire

Technical Field

The utility model relates to the technical field of shielded wires, in particular to a flame-retardant high-voltage shielded wire.

Background

Shielded cables are transmission lines that use a metallic mesh braid, typically red copper or tinned copper, to wrap the signal wires around. The shielding is to ensure the transmission performance of the system in the electromagnetic interference environment, and the anti-interference here shall include two aspects, namely the capability of resisting external electromagnetic interference and the capability of the system itself radiating electromagnetic interference outwards.

In the use process of the high-voltage shielding wire, the cable is possibly ignited due to reasons such as overload of a circuit, poor contact and contact with an external heat source, and further a fire disaster is possibly caused.

Therefore, it is necessary to provide a new flame-retardant high-voltage shielded wire to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a flame-retardant high-voltage shielding wire.

The utility model provides a flame-retardant high-voltage shielding wire which comprises an outer sheath, wherein an inner shielding layer is arranged in the outer sheath and comprises a galvanized copper woven net layer and an aluminum foil tinfoil layer, the galvanized copper woven net layer is arranged in the outer sheath, the aluminum foil tinfoil layer is arranged in the galvanized copper woven net layer, a flame-retardant layer is arranged in the aluminum foil tinfoil layer and comprises a low-smoke halogen-free polyolefin oxygen isolation layer and a mica tape layer, the low-smoke halogen-free polyolefin oxygen isolation layer is arranged in the aluminum foil tinfoil layer, the mica tape layer is internally provided with a waterproof film layer, a plurality of uniformly distributed inner insulating sleeves are arranged in the waterproof film layer, tensile fillers are filled in the waterproof film layer, and a plurality of uniformly distributed copper cores are arranged in the inner insulating sleeves.

Preferably, the outer side surface of the outer sheath is provided with two symmetrically arranged grooves, and the grooves are fixedly connected with matched flame-retardant fluorescent fabrics.

Preferably, the outer sheath is made of polyvinyl chloride.

Preferably, the inner insulating sleeve is made of ceramic halogen-free low-smoke flame-retardant fireproof polyolefin.

Preferably, the tensile filler is made of a PP tape.

Preferably, the material of the copper core is oxygen-free pure copper.

Compared with the related art, the flame-retardant high-voltage shielding wire provided by the utility model has the following beneficial effects:

the utility model provides a flame-retardant high-voltage shielding wire, which is characterized in that when in use, the cable has good electromagnetic shielding wires through an inner shielding layer consisting of a galvanized copper braided net layer and an aluminum foil tinfoil layer and is double-layer shielded, the galvanized copper braided net layer has good oxidation resistance and strong corrosion resistance, so that the service life of the cable is prolonged, the low-smoke halogen-free polyolefin oxygen-insulating layer and a mica tape layer have good flame-retardant performance, and the cable has strong flame-retardant performance through the flame-retardant layer consisting of the low-smoke halogen-free polyolefin oxygen-insulating layer and the mica tape layer and is double flame-retardant, so that the damage caused by fire is reduced to the minimum, the smoke generated during the fire of the low-smoke halogen-free polyolefin oxygen-insulating layer is low, the generation of dense smoke can be avoided, and the use is safer.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the present invention.

Reference numbers in the figures: 1. an outer sheath; 2. a copper core; 3. tensile filler; 4. a groove; 5. flame retardant fluorescent fabric; 6. an inner insulating sleeve; 7. a galvanized copper woven mesh layer; 8. an aluminum foil tin paper layer; 9. a low-smoke halogen-free polyolefin oxygen-barrier layer; 10. a mica tape layer; 11. a waterproof film layer.

Detailed Description

The utility model is further described below with reference to the drawings and the embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1; FIG. 3 is a schematic cross-sectional view of the present invention. Including oversheath 1, be provided with the internal shield layer in the oversheath 1, the internal shield layer includes that galvanized copper weaves stratum reticulare 7 and aluminium foil tinboard layer 8, be provided with galvanized copper weaves stratum reticulare 7 in the oversheath 1, be provided with aluminium foil tinboard layer 8 in the galvanized copper weaves the stratum reticulare 7, be provided with fire-retardant layer in the aluminium foil tinboard layer 8, fire-retardant layer includes that low smoke and zero halogen polyolefin separates oxygen layer 9 and mica tape layer 10, be provided with low smoke and zero halogen polyolefin in the aluminium foil tinboard layer 8 and separate oxygen layer 9, low smoke and zero halogen polyolefin separates and is provided with mica tape layer 10 in the oxygen layer 9, be provided with waterproof rete 11 in the mica tape layer 10, be provided with a plurality of evenly distributed's internal insulation cover 6 in the waterproof rete 11, it has tensile stopping 3 still to fill in the waterproof rete 11, be provided with a plurality of evenly distributed's copper core 2 in the internal insulation cover 6.

It should be noted that: when using, through weaving the internal shield layer that stratum reticulare 7 and aluminium foil tinboard layer 8 are constituteed by the galvanized copper, double-deck shielding, make the cable have good electromagnetic shield line, and the oxidation resistance that stratum reticulare 7 was woven to the galvanized copper is good, corrosion resistance is strong, thereby the life of cable has been improved, because low smoke and zero halogen polyolefin separates oxygen layer 9 and mica tape layer 10 and all has better fire behaviour, and through separating the fire-retardant layer that oxygen layer 9 and mica tape layer 10 constitute by low smoke and zero halogen polyolefin, double fire-retardant, make the cable have stronger fire behaviour, fall to minimumly with the damage that the conflagration caused, and the smoke volume that produces when low smoke and zero halogen polyolefin separates oxygen layer 9 conflagration is low, can avoid producing dense cigarette, thereby it is safer to use, waterproof membrane layer 11 through setting up, make the cable have better waterproof performance.

Referring to fig. 2, two symmetrically arranged grooves 4 are formed in the outer side surface of the outer sheath 1, the grooves 4 are fixedly connected with matched flame-retardant fluorescent fabric 5, and the flame-retardant fluorescent fabric 5 is arranged, so that the cable can be conveniently positioned when the visual field is poor, and the cable is convenient to overhaul and use.

The outer sheath 1 is made of polyvinyl chloride which has the characteristics of flame retardance, frost resistance and ageing resistance, so that the cable is safer and more durable.

The material of the inner insulating sleeve 6 is ceramic halogen-free low-smoke flame-retardant fireproof polyolefin, and the ceramic halogen-free low-smoke flame-retardant fireproof polyolefin has good insulativity and flame retardance, so that the cable has good insulativity, and the flame retardance of the cable is further improved.

The tensile filler 3 is made of PP (polypropylene) belts which are relatively soft and have relatively good tensile property, so that the cable has relatively good flexibility.

The copper core 2 is made of oxygen-free pure copper, so that the transmission is more stable and efficient.

The working principle provided by the utility model is as follows: when using, through weaving the internal shield layer that stratum reticulare 7 and aluminium foil tinboard layer 8 are constituteed by the galvanized copper, double-deck shielding, make the cable have good electromagnetic shield line, and the oxidation resistance that stratum reticulare 7 was woven to the galvanized copper is good, corrosion resistance is strong, thereby the life of cable has been improved, because low smoke and zero halogen polyolefin separates oxygen layer 9 and mica tape layer 10 and all has better fire behaviour, and through separating the fire-retardant layer that oxygen layer 9 and mica tape layer 10 constitute by low smoke and zero halogen polyolefin, double fire-retardant, make the cable have stronger fire behaviour, fall to minimumly with the damage that the conflagration caused, and the smoke volume that produces when low smoke and zero halogen polyolefin separates oxygen layer 9 conflagration is low, can avoid producing dense cigarette, thereby it is safer to use, waterproof membrane layer 11 through setting up, make the cable have better waterproof performance.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. The utility model provides a fire-retardant high pressure shielded wire, includes oversheath (1), its characterized in that, be provided with the internal shield layer in oversheath (1), the internal shield layer includes galvanized copper woven mesh layer (7) and aluminium foil tinboard layer (8), be provided with galvanized copper woven mesh layer (7) in oversheath (1), be provided with aluminium foil tinboard layer (8) in galvanized copper woven mesh layer (7), be provided with fire-retardant layer in aluminium foil tinboard layer (8), fire-retardant layer includes low smoke and zero halogen polyolefin oxygen barrier layer (9) and mica tape layer (10), be provided with low smoke and zero halogen polyolefin oxygen barrier layer (9) in aluminium foil tinboard layer (8), be provided with mica tape layer (10) in low smoke and zero halogen polyolefin oxygen barrier layer (9), be provided with waterproof membrane layer (11) in mica tape layer (10), be provided with a plurality of evenly distributed's internal insulation cover (6) in waterproof membrane layer (11), still fill tensile stopping material (3) in waterproof membrane layer (11), a plurality of copper cores (2) which are uniformly distributed are arranged in the inner insulating sleeve (6).

2. The flame-retardant high-voltage shielding wire according to claim 1, wherein two symmetrically arranged grooves (4) are formed in the outer side surface of the outer sheath (1), and the grooves (4) are internally and fixedly connected with matched flame-retardant fluorescent fabrics (5).

3. Flame retardant high voltage shielded wire according to claim 1, wherein the material of the outer sheath (1) is polyvinyl chloride.

4. The flame-retardant high-voltage shielding wire according to claim 1, wherein the inner insulating sleeve (6) is made of ceramic halogen-free low-smoke flame-retardant fire-resistant polyolefin.

5. The fire retardant high voltage shielded wire according to claim 1, wherein the tensile filler (3) is a PP tape.

6. The flame-retardant high-voltage shielding wire according to claim 1, wherein the copper core (2) is made of oxygen-free pure copper.