Double-layer series extrusion insulation flexible armored cable

Abstract

The utility model discloses a double-layer serial extrusion insulation flexible armored cable which comprises an optical fiber bundle, a PVC soft insulation layer, a nylon waterproof insulation layer and an aluminum alloy linkage armor. The optical fiber bundle is arranged in the PVC soft insulating layer and is wrapped by the PVC soft insulating layer; a nylon waterproof insulating layer is arranged outside the PVC soft insulating layer; the nylon waterproof insulating layer is externally provided with two layers of aluminum alloy interlocking armors which are matched with each other. According to the cable, the optical fiber bundle is tightly wrapped in the protective cover composed of the PVC soft insulating layer, the nylon waterproof insulating layer and the aluminum alloy interlocked armor, so that the safety problem caused by damage to the cable during construction is avoided to the greatest extent; the special requirements of rust prevention, tensile strength, flexible bending, external mechanical force damage resistance and the like are met, the cable can be directly embedded in a building wall, laying is convenient, and the cable can be widely used in basic industries such as modern office buildings, modern civil buildings, factories and mines and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable related equipment, in particular to a double-layer extruded insulated flexible armored cable. Background Art

[0002] At present, my country mainly uses the wiring method of civil building power line network. This method has low wiring cost and is relatively simple. The biggest disadvantage is that it is easy to cause wire insulation damage when the wires are passed through the pipe. In particular, modern housing is increasingly tending to be large and multi-roomed, and household appliances are becoming increasingly abundant. The wiring pipes are long and numerous, with many bends. The probability of wire insulation damage when the wires are passed through the pipe during the construction process is increasing. In addition, home decoration is a small project, the professional level of construction workers is uneven, and non-standard pipe construction is difficult to avoid. This type of electrical faults and failure accidents caused by pipe insulation damage occur frequently.

[0003] Based on the above situation, our company proposed a double-layer extruded insulated flexible armored cable after sufficient comparison and demonstration. Utility Model Content

[0004] The purpose of the utility model is to provide a double-layer string-extruded insulated flexible armored cable, which can greatly enhance the safety of the cable and meet the operation needs of building and household power line networks.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a double-layer extruded insulated flexible armored cable, including an optical fiber bundle, a PVC soft insulation layer, a nylon waterproof insulation layer and an aluminum alloy interlocking armor;

[0006] The optical fiber bundle is arranged inside the PVC soft insulation layer and is covered by the PVC soft insulation layer;

[0007] A nylon waterproof insulation layer is provided outside the PVC soft insulation layer;

[0008] Two layers of aluminum alloy interlocking armor that cooperate with each other are arranged outside the nylon waterproof insulation layer.

[0009] Preferably, the optical fiber bundle is provided in plurality and the annular array is provided in multiple layers.

[0010] Preferably, the annular array of optical fiber bundles is provided with three layers.

[0011] In a preferred embodiment, the PVC soft insulating layer is formed by directly extruding two extruders in series.

[0012] Preferably, the nylon waterproof insulation layer is made of polyamide nylon.

[0013] Preferably, the aluminum alloy interlocking armor is overmolded by a 9.5 mm x 0.5 mm aluminum alloy strip.

[0014] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are:

[0015] The present application discloses a double-layer extruded insulated flexible armored cable, which tightly wraps the optical fiber bundle in a protective cover composed of the PVC soft insulation layer, the nylon waterproof insulation layer and the aluminum alloy chain armor through the coordinated arrangement of the optical fiber bundle, the PVC soft insulation layer, the nylon waterproof insulation layer and the aluminum alloy chain armor, thereby avoiding safety problems caused by damage to the cable during construction to the greatest extent. The structure adopts two layers of insulation and alloy armor to meet special requirements such as rust prevention, tensile strength, flexible bending, and resistance to external mechanical damage. The finished cable has excellent performance in terms of corrosion resistance, safety, resistance to crushing, bending and other usage characteristics. It can be directly buried in the wall of a building and is easy to lay. It can be widely used in modern office buildings, modern civil buildings, factories, mines and other basic industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Attachment Figure 1 This is a schematic structural diagram of a double-layer extruded insulated flexible armored cable according to the present invention;

[0018] Including: 1. Optical fiber bundle; 2. PVC soft insulation layer; 3. Nylon waterproof insulation layer; 4. Aluminum alloy chain armor. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0022] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Example 1

[0026] Attachment Figure 1 The utility model is a double-layer extruded insulated flexible armored cable, comprising an optical fiber bundle 1, a PVC soft insulation layer 2, a nylon waterproof insulation layer 3 and an aluminum alloy interlocking armor 4;

[0027] The optical fiber bundle 1 is arranged inside the PVC soft insulation layer 2 and is covered by the PVC soft insulation layer 2; the optical fiber bundle 1 is provided with multiple fibers and the annular array is provided with multiple layers. Such a design can ensure the output efficiency of the cable; further, in order to better balance the flexibility and efficiency of the cable, the annular array of the optical fiber bundle 1 is provided with three layers;

[0028] The PVC soft insulation layer 2 is provided with a nylon waterproof insulation layer 3 on the outside; the PVC soft insulation layer 2 is directly extruded by two extruders;

[0029] According to the configuration characteristics of the existing equipment, two extruders are used in direct serial extrusion, so that the completed PVC soft insulation layer 2 and nylon waterproof insulation layer 3 are tightly and stably covered, with a smooth appearance and ideal process effect;

[0030] The nylon waterproof insulation layer 3 is provided with two layers of interlocking aluminum alloy armor 4 that cooperate with each other. The nylon waterproof insulation layer 3 is made of polyamide nylon. Polyamide nylon is a highly crystalline polymer composed of repeating segments of amide bonds and methylene groups. The intermolecular hydrogen bonds and crystallization give nylon a high melt-induced mutation transformation characteristic. High crystallization creates favorable conditions for the tight coating of nylon. High crystallization leads to high shrinkage. A three-stage design of a natural stage, a hot water stage, and a cooling stage is adopted to achieve high crystallization and high shrinkage of nylon, achieving a very ideal process effect.

[0031] The aluminum alloy interlocking armor 4 is formed by overmolding an aluminum alloy strip of 9.5 mm x 0.5 mm. The armoring process uses a small interlocking armoring device. Compared with other domestic equipment, the aluminum alloy interlocking armor 4 has a unique bending radius and flexibility control in the molding and overmolding of the minimum aluminum alloy strip of 9.5 mm x 0.5 mm. The design of the tape release, the design of the synchronous pulling, and the center sizing control are very suitable for indoor wiring systems.

[0032] The present application discloses a double-layer extruded insulated flexible armored cable, which is tightly wrapped in a protective cover composed of the PVC soft insulation layer 2, the nylon waterproof insulation layer 3 and the aluminum alloy chain armor 4 through the coordinated arrangement of the optical fiber bundle 1, the PVC soft insulation layer 2, the nylon waterproof insulation layer 3 and the aluminum alloy chain armor 4, thereby avoiding safety problems caused by damage to the cable during construction to the greatest extent. The structure adopts two layers of insulation and alloy armor to meet special requirements such as rust prevention, tensile strength, flexible bending, and resistance to external mechanical damage. The finished cable has excellent performance in terms of corrosion resistance, safety, resistance to crushing, bending and other usage characteristics. It can be directly buried in the wall of a building and is easy to lay. It can be widely used in modern office buildings, modern civil buildings, factories, mines and other basic industries.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-layer extruded insulated flexible armored cable, characterized in that: It includes optical fiber bundle, PVC soft insulation layer, nylon waterproof insulation layer and aluminum alloy interlocking armor; The optical fiber bundle is arranged inside the PVC soft insulation layer and is covered by the PVC soft insulation layer; A nylon waterproof insulation layer is arranged outside the PVC soft insulation layer; Two layers of aluminum alloy interlocking armors that cooperate with each other are arranged outside the nylon waterproof insulation layer.

2. A double-layer extruded insulated flexible armored cable as claimed in claim 1, characterized in that: The optical fiber bundle is provided with a plurality of fibers and the annular array is provided with multiple layers.

3. A double-layer extruded insulated flexible armored cable as claimed in claim 2, characterized in that: The optical fiber bundle annular array is provided with three layers.

4. A double-layer extruded insulated flexible armored cable as claimed in claim 1, characterized in that: The PVC soft insulating layer is formed by direct serial extrusion of two extruders.

5. A double-layer extruded insulated flexible armored cable as claimed in claim 1, characterized in that: The nylon waterproof insulation layer is made of polyamide nylon.

6. A double-layer extruded insulated flexible armored cable as claimed in claim 1, characterized in that: The aluminum alloy interlocking armor is formed by overmolding a 9.5mmX0.5mm aluminum alloy strip.

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