CN218975159U

CN218975159U - Low-voltage fireproof polyvinyl chloride wire

Info

Publication number: CN218975159U
Application number: CN202222190459.5U
Authority: CN
Inventors: 俞秀芳; 金建林; 潘广强
Original assignee: ZHEJIANG KANGWEISHENG HIGH TEMPERATURE CABLE CO Ltd
Current assignee: ZHEJIANG KANGWEISHENG HIGH TEMPERATURE CABLE CO Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-05-05
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a low-voltage fireproof polyvinyl chloride wire, which comprises a flame-retardant outer layer, wherein a flame-retardant inner layer is fixedly arranged in the flame-retardant outer layer, an insulating compression-resistant structure is arranged in the flame-retardant inner layer, a wire core is arranged in the insulating compression-resistant structure, a plurality of compression-resistant supporting blocks for bearing pressure are arranged on the outer edge surface of the flame-retardant outer layer in an equidistant manner in an annular array manner, a plurality of containing grooves convenient to bend are arranged among the compression-resistant supporting blocks, the insulating compression-resistant structure comprises an outer insulating layer, the outer insulating layer is fixedly arranged in the flame-retardant inner layer, a plurality of annular grooves are formed in the inner edge surface of the flame-retardant inner layer in an equidistant manner, and a plurality of compression-resistant rings inserted into the annular grooves are formed in the outer edge surface of the outer insulating layer in an equidistant manner. This low pressure fire prevention polyvinyl chloride wire is convenient for crooked, conveniently passes the curved of the intraductal arc of spool, and labour saving and time saving still possesses stronger bearing capacity, has avoided appearing because of the circumstances that leads to inside sinle silk to warp of pressurized, and the safety protection performance is higher, and the practicality is stronger.

Description

Low-voltage fireproof polyvinyl chloride wire

Technical Field

The utility model belongs to the technical field of wires, and particularly relates to a low-voltage fireproof polyvinyl chloride wire.

Background

The wire and cable is used for transmitting electric energy, information and wire products for realizing electromagnetic energy conversion. The broad sense of electric wire and cable is also simply referred to as cable, and the narrow sense of cable is referred to as insulated cable, which can be defined as: an aggregate consisting of; one or more insulated cores, and the respective coatings, total protective layers and outer protective layers that they may have, may also have additional uninsulated conductors.

At present, low-voltage fireproof polyvinyl chloride wires have certain defects, because the wires are supported and buried in a wall body through a wire pipe when in use, arc bends are designed at the bending positions of the wire pipe to facilitate threading, wires in the prior art can be used for protecting the wire cores in the wires, the outer sheath is harder, and the wires are laborious and low in practicality when penetrating through the arc bends in the wire pipe.

Disclosure of Invention

The utility model aims to provide a low-voltage fireproof polyvinyl chloride wire, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a low voltage fire-resistant polyvinyl chloride wire comprising a fire-resistant outer layer;

a flame-retardant inner layer is fixedly arranged in the flame-retardant outer layer, an insulating compression-resistant structure is arranged in the flame-retardant inner layer, and a wire core is arranged in the insulating compression-resistant structure;

the outer edge surface of the flame-retardant outer layer is provided with a plurality of compression-resistant supporting blocks used for bearing pressure at equal intervals in an annular array mode, and a plurality of containing grooves convenient to bend are formed between the compression-resistant supporting blocks.

Further, the insulation compression-resistant structure comprises an outer insulation layer which is fixedly arranged in the flame-retardant inner layer.

Further, a plurality of annular grooves are formed in the inner edge surface of the flame-retardant inner layer at equal intervals, and a plurality of anti-compression rings inserted into the annular grooves are formed in the outer edge surface of the outer insulating layer at equal intervals.

Further, a polyvinyl chloride filling layer is fixedly arranged in the outer insulating layer, an inner insulating layer is fixedly arranged in the polyvinyl chloride filling layer, and the inner insulating layer is fixedly arranged on the outer edge surface of the wire core.

Further, a plurality of annular grooves are formed in the inner edge surface of the polyvinyl chloride filling layer at equal intervals, and a plurality of supporting rings which are inserted and arranged in the annular grooves are formed in the outer edge surface of the inner insulating layer at equal intervals.

Compared with the prior art, the utility model has the following beneficial effects:

the flame-retardant outer layer with the plurality of compression-resistant supporting blocks and the wire core with the insulating compression-resistant structure are arranged, the plurality of compression-resistant supporting blocks arranged on the flame-retardant outer layer ensure the supporting protection of the wire core, and the electric wire can conveniently pass through the arc bend in the wire pipe through the containing grooves among the plurality of compression-resistant supporting blocks, so that the time and the labor are saved, and the practicability is higher;

thanks to the multiple compression-resistant supporting blocks arranged on the flame-retardant outer layer, the multiple compression-resistant rings arranged on the outer insulating layer and the multiple supporting rings arranged on the inner insulating layer, the pressure-bearing capacity of the electric wire is greatly improved, the occurrence of the condition that the inner wire core is deformed due to pressure is avoided, the safety protection performance is higher, and the practicability is higher.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 3 is a partial cross-sectional view of the structure of fig. 1 a in an enlarged state according to the present utility model.

In the figure: 1. a flame retardant outer layer; 2. a flame retardant inner layer; 3. a wire core; 4. a compression-resistant supporting block; 5. an outer insulating layer; 501. a compression ring; 6. a polyvinyl chloride filling layer; 7. an inner insulating layer; 701. and a support ring.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1 and 2, a low-voltage fireproof polyvinyl chloride wire comprises a flame-retardant outer layer 1, a flame-retardant inner layer 2 is fixedly installed in the flame-retardant outer layer 1, an insulation compression-resistant structure is installed in the flame-retardant inner layer 2, a wire core 3 is arranged in the insulation compression-resistant structure, a plurality of compression-resistant supporting blocks 4 used for bearing pressure are arranged on the outer edge surface of the flame-retardant outer layer 1 at equal intervals in an annular array mode, a plurality of holding grooves convenient to bend are formed between the compression-resistant supporting blocks 4, support protection to the wire core 3 is guaranteed through the compression-resistant supporting blocks 4 arranged on the flame-retardant outer layer 1, arc bending of the wire in the wire pipe is facilitated through the holding grooves between the compression-resistant supporting blocks 4, time and labor are saved, and practicability is strong.

As shown in fig. 2 and 3, the insulation compression-resistant structure includes an outer insulation layer 5, the outer insulation layer 5 is fixedly installed in the flame-retardant inner layer 2, a plurality of annular grooves are formed in the inner edge surface of the flame-retardant inner layer 2 at equal intervals, a plurality of compression-resistant rings 501 inserted into the annular grooves are formed in the outer edge surface of the outer insulation layer 5 at equal intervals, a polyvinyl chloride filling layer 6 is fixedly installed in the outer insulation layer 5, an inner insulation layer 7 is fixedly installed in the polyvinyl chloride filling layer 6, the inner insulation layer 7 is fixedly installed on the outer edge surface of the wire core 3, a plurality of annular grooves are formed in the inner edge surface of the polyvinyl chloride filling layer 6 at equal intervals, a plurality of supporting rings 701 inserted into the annular grooves are formed in the outer edge surface of the inner insulation layer 7 at equal intervals, and the compression-resistant rings 501 arranged on the outer insulation layer 5 and the inner insulation layer 7 are provided with a plurality of supporting rings through the plurality of compression-resistant supporting blocks 4, so that the pressure-resistant capacity of the wire core 3 is greatly improved, the situation that the wire core 3 is deformed due to compression is prevented, and the safety performance is high.

Working principle: this low pressure fire prevention polyvinyl chloride electric wire, during the use, when the threading, through pulling this electric wire through the arc bending in the spool, through the deformation of this electric wire, and cooperate the holding tank between a plurality of resistance to compression supporting shoe 4, make this electric wire can smooth crooked, it is comparatively convenient when passing through the arc bending, and through a plurality of resistance to compression supporting shoe 4 that set up on the fire-retardant skin 1, a plurality of resistance to compression 501 that set up on the outer insulating layer 5 and a plurality of support ring 701 that set up on the inner insulating layer 7, can improve the bearing capacity of this electric wire by a wide margin, avoided appearing because of the circumstances that the compression leads to inside sinle silk 3 to warp, the safety protection performance is higher, bearing capacity is strong, convenient to use.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A low voltage fire-resistant polyvinyl chloride wire comprising a fire-resistant outer layer (1);

the method is characterized in that: a flame-retardant inner layer (2) is fixedly arranged in the flame-retardant outer layer (1), an insulating compression-resistant structure is arranged in the flame-retardant inner layer (2), and a wire core (3) is arranged in the insulating compression-resistant structure;

the outer edge surface of the flame-retardant outer layer (1) is provided with a plurality of compression-resistant supporting blocks (4) for bearing pressure at equal intervals in an annular array mode, and a plurality of containing grooves convenient to bend are formed between the compression-resistant supporting blocks (4).

2. A low voltage fire resistant polyvinyl chloride wire as claimed in claim 1, wherein: the insulation compression-resistant structure comprises an outer insulation layer (5), and the outer insulation layer (5) is fixedly arranged in the flame-retardant inner layer (2).

3. A low voltage fire resistant polyvinyl chloride wire as claimed in claim 2, wherein: a plurality of annular grooves are formed in the inner edge surface of the flame-retardant inner layer (2) at equal intervals, and a plurality of anti-compression rings (501) inserted into the annular grooves are formed in the outer edge surface of the outer insulating layer (5) at equal intervals.

4. A low voltage fire resistant polyvinyl chloride wire as claimed in claim 2, wherein: the outer insulation layer (5) is internally and fixedly provided with a polyvinyl chloride filling layer (6), the polyvinyl chloride filling layer (6) is internally and fixedly provided with an inner insulation layer (7), and the inner insulation layer (7) is fixedly arranged on the outer edge surface of the wire core (3).

5. A low voltage fire resistant polyvinyl chloride wire as claimed in claim 4, wherein: a plurality of annular grooves are formed in the inner edge surface of the polyvinyl chloride filling layer (6) at equal intervals, and a plurality of supporting rings (701) which are inserted and arranged in the annular grooves are formed in the outer edge surface of the inner insulating layer (7) at equal intervals.