CN218676530U - High-tensile-strength modified double-layer insulation composite polyvinyl chloride wire - Google Patents

Abstract

The utility model discloses a modified double-layer insulated composite polyvinyl chloride wire with high tensile strength, which relates to the technical field of insulated wires. It includes a tensile wire and three wires, the outer side of the three wires is wrapped with a modified polyvinyl chloride wrapping layer, the three wires are arranged around the outer side of the tensile wire, the outer side of the tensile wire is filled with a filling layer, and the middle part of the filling layer is fixed There is a supporting frame, three wires are located inside the supporting frame, a first insulating layer is fixed outside the filling layer, and a tensile part is fixed outside the first insulating layer. The utility model is provided with a first insulating layer, a second insulating layer and a tensile part. The tensile part includes a metal layer and a mica layer. Smoke-free halogen flame-retardant polyolefin insulation material sleeve, the setting of the first insulating layer and the second insulating layer can better realize the flame retardancy of the wire and improve the flame retardancy of the wire. Through the setting of the metal layer and the mica layer, it can greatly Improve the tensile strength and bending performance of the wire.

Description

A high tensile strength modified double-layer insulation composite polyvinyl chloride wire

technical field

The utility model relates to the technical field of insulated wires, in particular to a high tensile strength modified double-layer insulation compound polyvinyl chloride wire.

Background technique

With the rapid development of my country's electric power industry, the demand for wires and cables as arteries and blood vessels for power transmission is also increasing day by day. Since the wires and cables are used for electrification, the wires and cables themselves will not be exposed outside. In order to ensure the safety of personnel, the outside of the wires and cables will be wrapped with insulating materials.

In the process of use, most of the insulating materials on the surface of wires and cables are plastics. Using them at high temperatures will easily lead to premature aging, cracking and stickiness on the surface, and the surface will fall off for a long time and lose its function. Moreover, the environment where some wires and cables come out is an environment that is prone to flames and flames, which will aggravate the damage to the stability of the surface plastic. out, it is easy to cause a short circuit, etc. In this case, in order to ensure that the protective material used for insulation on the surface of the wire and cable is stable and does not cause combustion, a flame-retardant wire is required.

Utility model content

The purpose of this utility model is to provide a high tensile strength modified double-layer insulated composite polyvinyl chloride wire to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical proposal: a high tensile strength modified double-layer insulated composite polyvinyl chloride wire, including a tensile wire and three wires, and the outside of the three wires is wrapped with a modified polyvinyl chloride wire. Vinyl chloride wrapping layer, three conductors are arranged around the outer side of the tensile wire, the outer side of the tensile wire is filled with a filling layer, the middle part of the filling layer is fixed with a supporting frame, the three wires are located inside the supporting frame, and the outer side of the filling layer is fixed with the first insulation layer, the outer side of the first insulating layer is fixed with a tensile part, and the outer side of the tensile part is fixed with a second insulating layer.

Preferably, the tensile part includes a metal layer, and the metal layer is braided by steel wire and aramid fiber.

Preferably, the tensile part further includes a mica layer, and the mica layer is fixed on the outside of the metal layer.

Preferably, the surfaces of the metal layer and the mica layer are set as diamond-shaped hollows.

Preferably, the first insulating layer is a low-smoke halogen-free nitrile insulating material sleeve.

Preferably, the second insulating layer is a low-smoke, halogen-free, flame-retardant polyolefin insulating sleeve.

Compared with the prior art, the beneficial effects of the utility model are:

The high tensile strength modified double-layer insulated composite polyvinyl chloride wire is provided with a first insulating layer, a second insulating layer and a tensile part, the tensile part includes a metal layer and a mica layer, and the first insulating layer is low-smoke Halogen-butyronitrile insulating material sleeve, the second insulating layer is a low-smoke halogen-free flame-retardant polyolefin insulating material sleeve, the setting of the first insulating layer and the second insulating layer better realizes the flame retardancy of the wire and improves the flame retardancy of the wire Performance, through the setting of the metal layer and the mica layer, the tensile strength and bending performance of the wire can be greatly improved, and the deformation and breakage of the wire can be prevented, the phenomenon of breaking the wire can be avoided, and the service life can be extended.

In addition, a support frame is also provided, which can well protect the wires, prevent the wires from being deformed under compression, and further improve the overall tensile strength and compression resistance of the wires.

Description of drawings

Fig. 1 is the axial view of the utility model.

In the figure: 1. tensile wire; 201, wire; 202, modified polyvinyl chloride wrapping layer; 3. filling layer; 4. supporting frame; 5. first insulating layer; 6. second insulating layer; 7. metal layer; 8, mica layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying 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 them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "Bottom", "Inner", "Outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and are not indicative or implied. Any device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

In addition, it should be understood that, for the convenience of description, the dimensions of the various components shown in the drawings are not drawn according to the actual scale relationship, for example, the thickness or width of some layers may be exaggerated relative to other layers.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, therefore, once an item is defined or described in one drawing, it will not need to be redefined in the description of subsequent drawings. It is further discussed and described in detail.

Wires and cables are also known as the "arteries" and "nerves" of the national economy. They are indispensable basic equipment for transmitting electric energy, transmitting information, manufacturing various motors, instruments, and meters, and realizing electromagnetic energy conversion. The tensile performance is not very good, and it is easy to deform or even break during the construction process. Therefore, a high tensile strength modified double-layer insulated composite polyvinyl chloride wire is proposed to solve the above problems. Referring to Figure 1, it can be seen that the The device includes a tensile wire 1 and three wires 201. The tensile wire 1 is specifically a glass fiber tensile wire, which has good tensile strength, thereby reducing the wire from being torn off and prolonging the service life. The outside of the three wires 201 Wrapped with a modified polyvinyl chloride wrapping layer 202. At present, the heat-resistant modification methods of polyvinyl chloride mainly include adding heat stabilizers, blending, cross-linking, copolymerization, and chlorination. Through these methods, the polyvinyl chloride can be improved. The heat-resistant performance of widening the scope of application is a prior art, and will not be repeated in this embodiment.

Three conductive wires 201 are arranged around the outer side of the tensile wire 1, and the outer side of the tensile wire 1 is filled with a filling layer 3, which is a mixture of high-density polyethylene and low-density polyethylene, which can effectively improve the shock resistance of the wire. Compressive performance, the support frame 4 is fixed in the middle of the filling layer 3, and the support frame 4 can be made of elastic rubber material to make it have a certain stability. The wires 201 are well protected to prevent the wires 201 from being deformed under pressure. The three wires 201 are located inside the support frame 4, the outer side of the filling layer 3 is fixed with the first insulating layer 5, and the outer side of the first insulating layer 5 is fixed with a tensile part. A second insulating layer 6 is fixed outside the tensile part.

In order to improve the overall tensile strength of the electric wire, it should be known that the tensile part includes a metal layer 7, the metal layer 7 is braided by steel wire and aramid fiber, in addition, the tensile part also includes a mica layer 8, and the mica layer 8 It is fixed on the outside of the metal layer 7. In order to reduce the overall weight of the wire, as a preferred solution, the surfaces of the metal layer 7 and the mica layer 8 are set as diamond-shaped hollows. By setting the metal layer 7 and the mica layer 8, the resistance of the wire can be greatly improved. Tensile strength and bending properties, and prevent wire deformation and breakage.

What needs to be known is that the first insulating layer 5 is a low-smoke halogen-free nitrile insulating material sleeve, the second insulating layer 6 is a low-smoke halogen-free flame-retardant polyolefin insulating material sleeve, the first insulating layer 5 and the second insulating layer 6 The material setting, the setting of the first insulating layer 5 and the second insulating layer 6 better realize the flame retardancy of the wire and improve the flame retardant performance of the wire, and the setting of the double insulating layer further improves the tensile strength of the wire .

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire, including a tensile wire (1) and three wires (201), characterized in that: the outside of the three wires (201) is wrapped with modified PVC wrapping layer (202), three wires (201) are arranged around the outer side of the tensile wire (1), the outer side of the tensile wire (1) is filled with a filling layer (3), and the middle part of the filling layer (3) is fixed There is a supporting frame (4), three wires (201) are located inside the supporting frame (4), the first insulating layer (5) is fixed on the outer side of the filling layer (3), and the tensile part is fixed on the outer side of the first insulating layer (5) , a second insulating layer (6) is fixed on the outer side of the tensile part. 2. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire according to claim 1, characterized in that: the tensile part includes a metal layer (7), and the metal layer (7) is a steel wire and Woven from aramid fibers. 3. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire according to claim 2, characterized in that: the tensile part also includes a mica layer (8), and the mica layer (8) is fixed on outside of the metal layer (7). 4. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire according to claim 2, characterized in that: the surfaces of the metal layer (7) and the mica layer (8) are set as diamond-shaped hollows. 5. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire according to claim 1, characterized in that: the first insulating layer (5) is a low-smoke halogen-free nitrile insulating material sheath. 6. A high tensile strength modified double-layer insulated composite polyvinyl chloride wire according to claim 1, characterized in that: the second insulating layer (6) is a low-smoke, halogen-free, flame-retardant polyolefin insulating material set.

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