Low-voltage flame-retardant wire

Abstract

The utility model provides a low-voltage flame-retardant electric wire, which relates to the technical field of electric wire protection and comprises a magnesium hydroxide jacket layer, an aluminum hydroxide jacket layer arranged in the magnesium hydroxide jacket layer, a glass fiber jacket layer arranged in the aluminum hydroxide jacket layer, a mica tape winding ring arranged in the glass fiber jacket layer, and a sheath layer arranged in the mica tape winding ring. A halogen-free low-smoke sleeve is arranged in the mica tape winding ring, a flame-retardant polyolefin sleeve layer is arranged in the halogen-free low-smoke sleeve, and a crosslinked polyethylene winding ring is arranged in the flame-retardant polyolefin sleeve layer. The cable is formed by laminating, adsorbing and winding the magnesium hydroxide sleeve layer, the aluminum hydroxide sleeve layer, the glass fiber sleeve layer, the mica tape winding ring, the halogen-free low-smoke sleeve and the flame-retardant polyolefin sleeve layer by layer, and the sleeve layers are made of flame-retardant and smoke-proof materials. And finally, a copper wire penetrates through the cross-linked polyethylene winding ring and then is wound on the flame-retardant polyvinyl chloride separation frame, so that the practicability of the flame-retardant polyvinyl chloride separation frame in the actual use process is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wire protection technical field especially relates to a low pressure flame -retardant electric wire. BACKGROUND

[0002] Electric wire is widely used in various buildings, equipment and electrical engineering, as an important medium of electric energy transmission, the safety of electric wire directly influences the stability and reliability of overall electrical system. In some special occasions, such as building interior, public place, underground facility etc., the flame -retardant performance of electric wire has higher requirement. The insulating layer and outer sheath material of traditional electric wire are usually easy to burn when fire occurs, produce a large amount of toxic smoke, bring great difficulty to personnel evacuation and fire rescue. Therefore, low pressure flame -retardant electric wire gradually becomes the hotspot of market demand, especially in the place needing higher fireproof grade, flame -retardant electric wire can effectively prevent flame spread, reduce the generation of smoke, guarantee personnel safety and property safety.

[0003] Although the existing low pressure flame -retardant electric wire has remarkable improvement in flame -retardant performance, but there are still some deficiencies in actual use process. First, although the traditional flame -retardant material can play a certain flame -retardant role under high temperature fire condition, due to the chemical characteristics of its material itself, still can release toxic smoke and gas, influence the safe evacuation and rescue action of personnel. Secondly, the structural design of existing flame -retardant electric wire is single, most only simply adds flame -retardant material on the surface of electric wire, cannot effectively improve the comprehensive performance of electric wire, such as heat resistance, anti -aging and mechanical strength etc. In addition, although the existing flame -retardant electric wire can prevent flame spread when fire occurs, but often cannot maintain integrity under long time high temperature, is easy to cause internal copper core to be exposed due to the damage of outer layer material, and then produce short circuit or electric shock hidden danger. In addition, the traditional flame -retardant material often sacrifices the flexibility and service life of electric wire while maintaining flame -retardant performance, leads to the electric wire to be easy to appear bending, damage etc. in actual installation and use process, influences the long -term use stability of electric wire. Therefore, how to guarantee that low pressure flame -retardant electric wire has excellent flame -retardant performance while further reducing smoke release, improving the heat resistance, anti -aging and mechanical strength of electric wire, becomes the problem to be solved in prior art. Therefore we provide a low pressure flame -retardant electric wire. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art, and provides a low pressure flame -retardant electric wire.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a low voltage flame -retardant electric wire, include: magnesium hydroxide cover layer, aluminium hydroxide cover layer is provided with in the magnesium hydroxide cover layer, glass fiber cover layer is provided with in the aluminium hydroxide cover layer, mica tape ring is provided with in the glass fiber cover layer, halogen -free low smoke cover is provided with in the mica tape ring, the crosslinked polyethylene winding ring that the flame -retardant polyolefin cover layer is provided with in the halogen -free low smoke cover, the flame -retardant polyvinyl chloride separating frame that the crosslinked polyethylene winding ring is provided with.

[0006] As a preferred implementation, the crosslinked polyethylene winding ring is wound around the flame-retardant polyvinyl chloride separating frame using copper wire.

[0007] As a preferred implementation, the flame-retardant polyolefin cover layer is attached to the outer surface of the crosslinked polyethylene winding ring, and the inner surface of the halogen-free low smoke cover is attached to the outer surface of the flame-retardant polyolefin cover layer.

[0008] As a preferred implementation, the mica tape ring is wound around the outer surface of the halogen-free low smoke cover by a binding tape winding method, and the glass fiber cover layer is attached to the outer surface of the mica tape ring.

[0009] As a preferred implementation, the inner surface of the aluminium hydroxide cover layer is attached to the outer surface of the glass fiber cover layer.

[0010] As a preferred implementation, the inner surface of the magnesium hydroxide cover layer is attached to the outer surface of the aluminium hydroxide cover layer.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that:

[0012] The magnesium hydroxide cover layer, the aluminium hydroxide cover layer, the glass fiber cover layer, the mica tape ring, the halogen-free low smoke cover, and the flame-retardant polyolefin cover layer are attached and adsorbed to form a winding, and the raw materials of these cover layers are made of flame-retardant and smoke-avoiding materials. Finally, the copper wire is passed through the crosslinked polyethylene winding ring and wound around the flame-retardant polyvinyl chloride separating frame, thereby further improving the practicability in actual use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a kind of low voltage flame -retardant electric wire structure schematic view.

[0014] Figure 2 The utility model provides a kind of low voltage flame -retardant electric wire magnesium hydroxide cover layer, aluminium hydroxide cover layer and glass fiber cover layer structure exploded schematic view.

[0015] Figure 3The utility model provides a kind of mica tape winding ring of low-voltage flame-retardant wire, halogen-free low-smoke sleeve and flame-retardant polyolefin sleeve layer structure decomposition schematic diagram.

[0016] Figure 4 The utility model provides a kind of crosslinked polyethylene winding ring and flame-retardant polyvinyl chloride separation frame structure decomposition schematic diagram of low-voltage flame-retardant wire.

[0017] Legend:

[0018] 1, magnesium hydroxide sleeve layer;2, aluminium hydroxide sleeve layer;3, glass fiber sleeve layer;4, mica tape winding ring;5, halogen-free low-smoke sleeve;6, flame-retardant polyolefin sleeve layer;7, crosslinked polyethylene winding ring;8, flame-retardant polyvinyl chloride separation frame. Specific embodiments

[0019] In order to more clearly illustrate the overall concept of the utility model, the following will be combined with the drawings in the description in the form of example to be described in detail.

[0020] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0021] In addition, in the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0022] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or detachable connection, or integral;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements.But it is noted that direct connection means that the connection between the two main bodies does not pass through the transition structure to build the connection relationship, but only connects through the connecting structure to form an integral whole.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly contacted through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Embodiment

[0024] As Figures 1-4 shown, the present application provides a technical scheme: a low-voltage flame-retardant wire, comprising: a magnesium hydroxide sleeve layer 1, an aluminum hydroxide sleeve layer 2 is arranged in the magnesium hydroxide sleeve layer 1, a glass fiber sleeve layer 3 is arranged in the aluminum hydroxide sleeve layer 2, a mica tape winding ring 4 is arranged in the glass fiber sleeve layer 3, a halogen-free low-smoke sleeve 5 is arranged in the mica tape winding ring 4, a crosslinked polyethylene winding ring 7 is arranged in the halogen-free low-smoke sleeve 5, and a flame-retardant polyvinyl chloride separation frame 8 is arranged in the crosslinked polyethylene winding ring 7.

[0025] The crosslinked polyethylene winding ring 7 is wound and conducted by using copper wire, the crosslinked polyethylene winding ring 7 is wound on the outer surface of the flame-retardant polyvinyl chloride separation frame 8 in six ways, the flame-retardant polyolefin sleeve layer 6 is sleeved on the outer surface of the crosslinked polyethylene winding ring 7, the inner surface of the halogen-free low-smoke sleeve 5 is attached and sleeved on the outer surface of the flame-retardant polyolefin sleeve layer 6, the mica tape winding ring 4 is wound on the outer surface of the halogen-free low-smoke sleeve 5 by the binding tape winding mode, the glass fiber sleeve layer 3 is attached on the outer surface of the mica tape winding ring 4, the inner surface of the aluminum hydroxide sleeve layer 2 is attached and sleeved on the outer surface of the glass fiber sleeve layer 3, and the inner surface of the magnesium hydroxide sleeve layer 1 is attached and adsorbed and sleeved on the outer surface of the aluminum hydroxide sleeve layer 2.

[0026] In the present application, when the low-voltage flame-retardant wire is used for construction, the low-voltage flame-retardant wire is formed by the magnesium hydroxide sleeve layer 1, the aluminum hydroxide sleeve layer 2, the glass fiber sleeve layer 3, the mica tape winding ring 4, the halogen-free low-smoke sleeve 5 and the flame-retardant polyolefin sleeve layer 6, and the raw materials of these sleeve layers are made of flame-retardant and smoke-avoiding materials. Finally, the copper wire is passed through the crosslinked polyethylene winding ring 7 and wound on the flame-retardant polyvinyl chloride separation frame 8, so that the practicability in the actual use process is further improved.

[0027] Working principle:

[0028] As Figures 1-4As shown, the low-voltage fire-retardant wire adopts a multi-layer fire-retardant structure, and the outer layer is composed of magnesium hydroxide sleeve 1, aluminum hydroxide sleeve 2, glass fiber sleeve 3, mica tape ring 4, halogen-free low-smoke sleeve 5, and fire-retardant polyolefin sleeve 6 in turn. These materials can effectively slow down the burning speed and suppress the fire when exposed to high temperature or fire source. Among them, the magnesium hydroxide sleeve 1 and the aluminum hydroxide sleeve 2 release water to cool the fire source, the glass fiber improves the strength of the cable, and the mica tape plays a flame shielding role. The halogen-free low-smoke sleeve 5 releases low-smoke halogen-free gas when burning, reducing the emission of toxic gas and ensuring the relative safety of the fire scene. In addition, the copper conductor as the core part of the cable can stably transmit power in a low-voltage environment after passing through the multi-layer fire-retardant protective sleeve, and the outer crosslinked polyethylene winding ring 7 further ensures the heat resistance and insulation performance of the cable. The multi-layer composite design of the cable makes it have good fire-retardant, low-smoke and fireproof performance in actual use. With the support of the fire-retardant polyvinyl chloride separation frame 8, each layer of material is wound into a whole, ensuring the stability and fire resistance of the cable in the fire source. Each layer of material not only has its own fire-retardant and smoke-proof properties, but also forms a protective barrier in cooperation with each other, effectively improving the overall safety performance of the cable, making it safer and more reliable in electrical construction and daily use.

[0029] Those skilled in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest the scope (including claims) of the present application is limited to these examples; under the concept of the present application, the above embodiments or technical features in different embodiments can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0030] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A low voltage, flame-retardant electrical wire, characterized by, Include: The magnesium hydroxide sleeve (1) is provided with an aluminum hydroxide sleeve (2), the aluminum hydroxide sleeve (2) is provided with a glass fiber sleeve (3), the glass fiber sleeve (3) is provided with a mica tape winding ring (4), the mica tape winding ring (4) is provided with a halogen-free low smoke sleeve (5), the halogen-free low smoke sleeve (5) is provided with a flame-retardant polyolefin sleeve (6) provided with a crosslinked polyethylene winding ring (7), the crosslinked polyethylene winding ring (7) is provided with a flame-retardant polyvinyl chloride separation frame (8).

2. A low voltage, flame-retardant electrical wire according to claim 1, wherein: The crosslinked polyethylene winding ring (7) is wound with copper wire for winding and conduction, and the crosslinked polyethylene winding ring (7) is wound on the outer surface of the flame-retardant polyvinyl chloride separation frame (8) in six ways.

3. A low voltage, fire resistant electrical wire according to claim 1, wherein: The flame-retardant polyolefin sleeve (6) is sleeved on the outer surface of the crosslinked polyethylene winding ring (7), and the inner surface of the halogen-free low smoke sleeve (5) is attached to the outer surface of the flame-retardant polyolefin sleeve (6).

4. A low voltage, fire resistant electrical wire according to claim 1, wherein: The mica tape winding ring (4) is wound on the outer surface of the halogen-free low smoke sleeve (5) by the way of binding tape winding, and the glass fiber sleeve (3) is attached to the outer surface of the mica tape winding ring (4).

5. A low voltage, fire resistant electrical wire according to claim 1, wherein: The inner surface of the aluminum hydroxide sleeve (2) is attached to the outer surface of the glass fiber sleeve (3).

6. A low voltage, fire resistant electrical wire according to claim 1, wherein: The inner surface of the magnesium hydroxide sleeve (1) is attached to the outer surface of the aluminum hydroxide sleeve (2).

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