CN200965812Y - A XLPE insulation, PVC sheathed power cable - Google Patents

Abstract

The utility model discloses a cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable, which comprises four core wires, a soft conductor is used in the middle of the core wires, the outer periphery of the soft conductor is a mica wrapping tape, and the outer periphery of the wrapping tape is It is a cross-linked polyethylene insulation layer. The gap between the cores of the multi-core cable has a polypropylene mesh tape filling layer, and the cable sheath is a PVC sheath. The utility model can not only transmit electric power under normal conditions, but also can operate safely within a period of time when a fire occurs. At the same time, the power cable also has the characteristics of low toxicity, low smoke, halogen-free or low-halogen, flame-retardant, safe and clean, which meets the current market demand for safe, clean and fire-resistant cables.

Description

A cross-linked polyethylene insulated, polyvinyl chloride sheathed power cable

Technical field:

The utility model relates to a cable, in particular to a power cable with cross-linked polyethylene insulation and polyvinyl chloride sheath.

Background technique:

As the degree of industrial automation continues to increase, the performance requirements for power cables increase accordingly. In particular, many important occasions such as high-rise buildings, hotels, railways and other important lines require the use of safe, clean and fire-resistant power cables.

Invention content:

The purpose of the invention of the utility model is to provide a cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable to meet the market demand for safe, clean and fire-resistant power cables.

The technical solution to achieve the above invention is: a cross-linked polyethylene insulated, polyvinyl chloride sheathed power cable, which includes:

Four core wires, the core wire includes a multi-strand soft conductor in the middle, a refractory layer and a cross-linked polyethylene insulating layer surrounding the multi-strand soft conductor in turn; the outer circumference of the four core wires is surrounded by a wrapping layer and a The sheath is provided with a filling layer inside the wrapping layer and in the gap outside the four core wires; the sheath is a polyvinyl chloride sheath.

Wherein, the soft conductor is a bundle of tinned copper wires.

Wherein, the refractory layer is wrapped with mica tape.

Wherein, the wrapping layer is made of glass fiber tape.

Beneficial effects of the invention:

According to the utility model, the insulating layer outside the core wire is insulated by cross-linked polyethylene, and the sheath of the outermost layer of the cable is made of polyvinyl chloride sheath. In addition to transmitting power under normal conditions, it can also be used in case of fire. Operate safely for a period of time. That is, under the power supply condition of rated voltage 0.6/1KV, and in the flame combustion of 750-800 ℃, it can maintain normal operation for 90 minutes. At the same time, the power cable also has the characteristics of low toxicity, low smoke, halogen-free or low-halogen, flame-retardant, safe and clean, which meets the current market demand for safe, clean and fire-resistant cables.

Description of drawings:

Fig. 1 is a schematic diagram of the cross-sectional structure of the cable described in the present invention.

Detailed ways:

Referring to accompanying drawing 1, in the present embodiment, this cable has four core wires 10, and core wire 10 center adopts multi-strand flexible conductor 1, and the surface of flexible conductor 1 is refractory layer 2, and the outer periphery of refractory layer 2 is insulating layer 3 , four core wires 10 are embedded in the filling layer 4 , the outer circumference of the filling layer 4 is a wrapping layer 5 , and the outermost layer is an insulating sheath 6 .

Among them, the multi-strand soft conductor 1 is tinned copper wire bundle, the refractory layer 2 is mica tape, the filling layer 4 is filled with polypropylene mesh tape, the wrapping layer 5 is glass fiber tape, and the cross-linked polyethylene insulating layer 3 is pressed The molding machine is continuously extruded, and the polyvinyl chloride sheath 6 is also continuously extruded by a compression molding machine. The utility model not only has the characteristics of fire resistance and high temperature resistance, but also has the characteristics of low toxicity, low smoke, halogen-free or low halogen, flame-retardant, safe and clean, and meets the current market demand for safe and clean fire-resistant cables.

Claims (4)

1. A cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable, characterized in that it includes: four core wires, the core wires include a multi-strand soft conductor located in the middle, and are surrounded by multi-strand soft conductors in turn The refractory layer and cross-linked polyethylene insulating layer; the outer circumference of the four core wires is surrounded by a wrapping layer and a sheath in turn, and a filling layer is provided in the wrapping layer and the gap outside the four core wires; the sheath The sheath is polyvinyl chloride sheath. 2. The cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable according to claim 1, wherein the soft conductor is a multi-strand tinned copper wire bundle. 3. The XLPE insulated and PVC sheathed power cable according to claim 1, characterized in that the refractory layer is wrapped by mica tape. 4. The cross-linked polyethylene insulated and polyvinyl chloride sheathed power cable according to claim 1, wherein the wrapping layer is made of glass fiber tape.

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