CN214175744U

CN214175744U - Polyvinyl chloride insulation flexible cable wire

Info

Publication number: CN214175744U
Application number: CN202120267459.3U
Authority: CN
Inventors: ***; 冉春风; 赵强; 夏卫
Original assignee: Jiangsu Tin Cable Special Cable Co Ltd
Current assignee: Jiangsu Tin Cable Special Cable Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-09-10
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses an insulating flexible cable electric wire of polyvinyl chloride, including the cable wearing layer, the fixed cover of the interior lateral wall of cable wearing layer has cup jointed first flame retardant coating, the fixed cover of first flame retardant coating inside wall has cup jointed the second flame retardant coating, the fixed oxidation resisting layer that has cup jointed of second flame retardant coating inside wall, the fixed metal shielding layer that has cup jointed of oxidation resisting layer inside wall, the fixed cover of metal shielding in-situ lateral wall has cup jointed insulating sheath layer, insulating sheath layer inboard is provided with conductor assembly. The utility model discloses, through being provided with first flame retardant coating and second flame retardant coating, first flame retardant coating is hollow structure, injects inert gas in first flame retardant coating, when meeting with the conflagration, after first flame retardant coating is burnt out, the inside inert gas of flame retardant coating can spill over, forms the fire hose in the second flame retardant coating outside, protects the second flame retardant coating, after the conflagration moves back, the second flame retardant coating still can use, need not to change the cable electric wire, labour saving and time saving practices thrift the cost.

Description

Polyvinyl chloride insulation flexible cable wire

Technical Field

The utility model relates to a cable and wire technical field especially relates to polyvinyl chloride insulated flexible cable electric wire.

Background

The electric wire and cable are materials used for electric power, electric and related transmission purposes, the electric wire and the cable are not strict in limits, products with small core number, small product diameter and simple structure are generally called electric wires, products without insulation are called bare wires, and other products are called cables; the cable mainly comprises a bare wire, a cloth wire, a power cable for electrical equipment, a cross-linked cable and a communication optical cable, wherein the polyvinyl chloride insulated flexible cable wire is one of the wires, and is a flexible cable wire with an insulating layer made of PVC material.

At present, the problem that insulating flexible cable wire of polyvinyl chloride exists lies in, because the anti-oxidant degree of characteristics of this kind of cable wire is not high, and the fire behavior of cable itself is poor, in case can directly lead to the inner conductor impaired in case of a fire, needs large tracts of land to be changed after the conflagration, wastes time and energy, so need design a new insulating flexible cable wire of polyvinyl chloride and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a polyvinyl chloride insulated flexible cable wire.

In order to achieve the above purpose, the utility model adopts the following technical scheme: insulating flexible cable electric wire of polyvinyl chloride, including the cable wearing layer, the fixed cover of cable wearing layer internal side wall has cup jointed first flame retardant coating, the fixed cover of first flame retardant coating inside wall has cup jointed the second flame retardant coating, the fixed oxidation resisting layer that has cup jointed of second flame retardant coating inside wall, the fixed cover of oxidation resisting layer inside wall has cup jointed the metallic shield layer, the fixed cover of metallic shield in-situ side wall has cup jointed insulating sheath layer, insulating sheath layer inboard is provided with conductor assembly.

As a further description of the above technical solution:

the first fireproof layer is of a hollow cylindrical structure, and inert gas is filled in the first fireproof layer.

As a further description of the above technical solution:

the oxidation resistant layer is formed by stainless steel wires through cross weaving.

As a further description of the above technical solution:

the metal shielding layer is formed by weaving a copper wire band.

As a further description of the above technical solution:

and a filling material is arranged between the insulating sheath layer and the conductor component.

As a further description of the above technical solution:

the conductor assembly comprises an insulating layer, a conductor shielding layer is fixedly sleeved on the inner side wall of the insulating layer, a heat-resistant mica layer is fixedly sleeved on the inner side wall of the conductor shielding layer, and a conductor main body is fixedly sleeved on the inner side wall of the heat-resistant mica layer.

As a further description of the above technical solution:

the insulating sheath layer and the insulating layer are made of PVC materials.

The utility model discloses following beneficial effect has:

1. compared with the prior art, through being provided with the antioxidation layer, the antioxidation layer weaves the shaping for the stainless steel wire, and flexible line cable itself has good heat dispersion, but its oxidation resistance is poor, and through addding the antioxidation layer, the passivation film that actually utilizes stainless steel wire itself improves wire and cable's oxidation resistance effectively, and stainless steel wire texture itself is softer, can keep unanimous with flexible line cable's outer pliability, can not influence the performance advantage of cable wire itself.

2. Compared with the traditional polyvinyl chloride insulated flexible cable wire, this polyvinyl chloride insulated flexible cable wire's advantage lies in, through being provided with first flame retardant coating and second flame retardant coating, first flame retardant coating is hollow structure, inject inert gas in first flame retardant coating, when encountering with the conflagration, after first flame retardant coating is burnt out, the inside inert gas of flame retardant coating can spill over, form the fire prevention area in the second flame retardant coating outside, protect the second flame retardant coating, when the conflagration moves back, the second flame retardant coating still can use, need not to change the cable wire, time saving and labor saving, and the cost is saved.

Drawings

Fig. 1 is a schematic cross-sectional view of a polyvinyl chloride insulated flexible cable according to the present invention;

fig. 2 is a schematic cross-sectional view of a conductor assembly.

Illustration of the drawings:

1. a cable wear layer; 2. a first fire resistant layer; 3. a second fire-resistant layer; 4. an anti-oxidation layer; 5. a metal shielding layer; 6. an insulating sheath layer; 7. a filler material; 8. a conductor assembly; 801. an insulating layer; 802. a conductor shield layer; 803. a heat-resistant mica layer; 804. a conductor body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides an embodiment: insulating flexible cable electric wire of polyvinyl chloride, including cable wearing layer 1, the fixed cover of 1 inside wall of cable wearing layer has cup jointed first flame

retardant coating

2, and 2 inside walls of first flame retardant coating are fixed and have been cup jointed second flame

retardant coating

3, and 3 inside walls of second flame retardant coating are fixed and have been cup jointed

antioxidation layer

4, and 4 inside walls of antioxidation layer are fixed and have been cup jointed

metallic shield

5, and 5 inside walls of metallic shield have cup jointed insulating restrictive coating 6, and 6 inboards of insulating restrictive coating are provided with conductor assembly 8.

The first fireproof layer 2 is of a hollow cylindrical structure, the inert gas is filled in the first fireproof layer 2 and can be nitrogen, and the nitrogen extinguishes the fire, and has the advantages that the nitrogen is colorless, tasteless and non-conductive, the density of the nitrogen is approximately equal to that of air, the nitrogen is non-toxic and non-corrosive, the nitrogen does not participate in combustion reaction and does not react with other substances, most importantly, the nitrogen is not decomposed and decomposed products do not exist in the fire extinguishing process, so the fire extinguishing process is clean, no trace is left after fire extinguishing, and no damage is caused to instruments and equipment in use, in addition, the cost performance of the nitrogen is superior to that of other inert gases, the oxidation resistant layer 4 is formed by cross weaving of stainless steel wires, the oxidation resistant film on the outer surface of the stainless steel wires is mainly a passive film, the oxidation resistance is good, the oxidation resistance of the polyvinyl chloride insulated flexible cable wire can be greatly improved, and the stainless steel wires are soft in texture, the flexibility and the performance of the polyvinyl chloride insulated flexible cable wire are not influenced, the metal shielding layer 5 is woven by copper wires, the copper wires generate less heat in the current shielding process, can reduce the flowing current without influencing the normal work of the cable, the filling material 7 arranged between the insulating sheath layer 6 and the conductor component 8 is mainly glass fiber, the glass fiber has the advantages of large impact energy absorption, can protect conductor assembly 8 effectively, conductor assembly 8 includes insulating layer 801, conductor shielding layer 802 has been cup jointed to insulating layer 801 inside wall fixed, conductor shielding layer 802 inside wall fixed cover has been cup jointed heat-resisting mica layer 803, the fixed cover of heat-resisting mica layer 803 inside wall has been cup jointed conductor main part 804, insulating restrictive coating 6 and insulating layer 801 are the PVC material, PVC's advantage lies in, the quality is light and can be waterproof and dampproofing, in addition, its itself still has fire-retardant thermal-insulated characteristics.

The working principle is as follows: when the polyvinyl chloride insulation flexible cable wire encounters a fire disaster, the first fireproof layer 2 has certain heat resistance, when the temperature of the fire disaster is higher than the limit heat-resisting temperature of the first fireproof layer 2, the first fireproof layer 2 is burnt, inert gas filled in the first fireproof layer 2 overflows at the moment, the inert gas forms a layer of fireproof belt around the second fireproof layer 3, the burning of open fire to the second fireproof layer 3 is avoided, when the flame is removed, the cable wire can be used without replacement, the loss cost is greatly reduced, in addition, the oxidation-resistant layer 4 woven by the stainless steel wire is additionally arranged in the cable wire, and the oxidation resistance of the polyvinyl chloride insulation flexible cable wire is greatly improved by utilizing the passivation film on the surface of the stainless steel wire.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Polyvinyl chloride insulation flexible cable electric wire, including cable wearing layer (1), its characterized in that: fixed cover of cable wearing layer (1) inside wall has cup jointed first flame retardant coating (2), the fixed cover of first flame retardant coating (2) inside wall has cup jointed second flame retardant coating (3), second flame retardant coating (3) inside wall is fixed to have cup jointed antioxidation layer (4), antioxidation layer (4) inside wall is fixed to have cup jointed metallic shield layer (5), metallic shield layer (5) inside wall is fixed to have cup jointed insulating restrictive coating (6), insulating restrictive coating (6) inboard is provided with conductor assembly (8).

2. The polyvinyl chloride insulated flexible cable wire of claim 1, wherein: the first fireproof layer (2) is of a hollow cylindrical structure, and inert gas is filled in the first fireproof layer (2).

3. The polyvinyl chloride insulated flexible cable wire of claim 1, wherein: the oxidation resistant layer (4) is formed by cross weaving of stainless steel wires.

4. The polyvinyl chloride insulated flexible cable wire of claim 1, wherein: the metal shielding layer (5) is formed by weaving a copper wire band.

5. The polyvinyl chloride insulated flexible cable wire of claim 1, wherein: and a filling material (7) is arranged between the insulating sheath layer (6) and the conductor component (8).

6. The polyvinyl chloride insulated flexible cable wire of claim 1, wherein: conductor subassembly (8) include insulating layer (801), insulating layer (801) inside wall is fixed to be cup jointed conductor shield (802), conductor shield (802) inside wall is fixed to be cup jointed heat-resisting mica layer (803), heat-resisting mica layer (803) inside wall is fixed to be cup jointed conductor main part (804).

7. The polyvinyl chloride insulated flexible cable wire according to any one of claims 1 to 6, wherein: the insulating sheath layer (6) and the insulating layer (801) are made of PVC materials.