CN201378462Y - High tensile power cable for deep well - Google Patents

Abstract

The utility model relates to a high-strength power cable for deep wells used in power transmission lines laid in deep wells and with large drop, comprising an outer sheath, a conductor with an insulating layer is arranged in the outer sheath, A steel wire rope is arranged between the conductor and the outer sheath, a buffer layer is arranged outside the steel wire rope, and a filler is arranged between the buffer layer, the insulating layer and the outer sheath. It can effectively prevent the damage to the cable due to the weight of the cable and the weight of the steel wire, and save raw materials. Use a steel wire rope with a buffer layer to replace the steel wire armor layer. When aluminum-clad steel or copper-clad steel is used as the conductor, the tensile effect of the cable itself is greatly enhanced, and it is not easy to break. The steel wire rope is wound with the insulated core to form a cable. At the same time, this greatly enhances the bonding force of the wire rope and the cable, and more importantly, enhances the tensile effect of the cable. Because the steel wire rope has a buffer layer outside, it is beneficial to combine with the insulated wire core and avoid the steel wire rope stabbing and scratching the cable.

Description

High tensile power cable for deep well

technical field

The utility model relates to a cable used in power transmission lines laid in deep wells and large drop, in particular to a high tensile power cable for deep wells used in power transmission lines of deep mines.

Background technique

In deep wells and power transmission lines with large drops, especially in deep mines, cables with thin steel wire armor or thick steel wire are required (as shown in Figure 1). The outer layer of this cable is composed of an outer sheath (1) and an inner sheath (3), a steel wire (2) is arranged between the outer sheath (1) and the inner sheath (3), and the inner sheath (3 ) is provided with a conductor (6) with an insulating layer (5), a filler (4) is provided between the conductor (6) with an insulating layer (5) and the inner sheath (3), and the outer sheath (1) is polyvinyl chloride or polyethylene, the steel wire (2) is galvanized thick steel wire or thin steel wire, the inner sheath (3) is polyvinyl chloride, and the filler (4) is polypropylene mesh tear film or Polyvinyl chloride or polyethylene rope, insulation layer (5) adopts polyvinyl chloride and polyethylene insulation when conducting low voltage, and uses cross-linked polyethylene three-layer co-extrusion when conducting high voltage, conductor (6) adopts aluminum conductor or copper conductor . But because the weight of this cable itself and the weight of the steel wire armor are very large, the cable conductor is easily broken and the cable as a whole is easy to move downward, which is easy to cause accidents.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-tensile power cable for deep wells that can effectively prevent the damage to the cable itself due to the weight of the cable and the weight of the steel wire, and can save raw materials.

The purpose of this utility model is achieved in that it includes an outer sheath, which is characterized in that: a conductor with an insulating layer is arranged in the outer sheath, and a steel wire rope is arranged between the conductor with the insulating layer and the outer sheath. A buffer layer is arranged on the outside of the steel wire rope, and a filler is arranged between the buffer layer, the insulating layer and the outer sheath.

The conductor is aluminum clad steel or copper clad steel or copper conductor.

The buffer layer is polyvinyl chloride or polyethylene or other high polymers.

The outer sheath uses polyvinyl chloride or polyethylene.

The insulating layer is insulated by polyvinyl chloride and polyethylene at low pressure, and co-extruded with three layers of cross-linked polyethylene at high pressure.

The filler is polypropylene mesh tear film or polyvinyl chloride or polyethylene rope.

The steel wire rope uses anti-corrosion thin steel wire or thick steel wire.

The insulated wire core composed of the steel wire rope with the buffer layer and the conductor with the insulation layer is wound into a cable.

The utility model can effectively prevent damage to the cable due to the weight of the cable and the weight of the steel wire, and saves raw materials. Use a steel wire rope with a buffer layer to replace the steel wire armor layer, and use aluminum-clad steel or copper-clad steel as the conductor. The tensile effect of the cable itself is greatly enhanced, and it is not easy to break. The steel wire rope and the insulated core are wound together to form a cable, which greatly enhances the bonding force between the steel wire rope and the cable, and more importantly, enhances the tensile effect of the cable. Because the buffer layer on the outside of the steel wire rope is conducive to the combination with the insulated core It avoids the steel wire rope stabbing and scratching the cable.

Description of drawings

Fig. 1 is a structural schematic diagram of a power cable for deep wells in the prior art.

Fig. 2 is a schematic structural diagram of a high-tensile power cable for deep wells.

Detailed ways

As shown in Figure 2, the utility model comprises an outer sheath 10, a conductor 7 with an insulating layer 11 is arranged in the outer sheath 10, and a steel wire rope is arranged between the conductor 7 with the insulating layer 11 and the outer sheath 10 8. A buffer layer 9 is arranged on the outside of the steel wire rope 8, and a filler 12 is arranged between the buffer layer 9, the insulating layer 11 and the outer sheath 10.

The conductor 7 is aluminum clad steel or copper clad steel or copper conductor. The buffer layer 9 is polyvinyl chloride or polyethylene or other high polymers. Polyvinyl chloride or polyethylene is used for the outer sheath 10 . The insulating layer 11 is insulated by polyvinyl chloride or cross-linked polyethylene at low pressure, and co-extruded with three layers of cross-linked polyethylene at high pressure. Filler 12 is polypropylene mesh tear film or polyvinyl chloride or polyethylene rope. Wire rope 8 uses anti-corrosion thin steel wire or thick steel wire.

The utility model uses aluminum clad steel or copper clad steel or copper conductor as the conductor of the cable, and uses a steel wire rope with a buffer layer and an insulated wire core to be wound into a cable to replace the steel wire armor layer (as shown in Figure 2) Show). When the conductor with steel core is used, the tensile effect of the cable itself is greatly enhanced, and it is not easy to break. The steel wire rope and the insulated core are wound together to form a cable, which greatly enhances the bonding force between the steel wire rope and the cable, and more importantly, enhances the tensile effect of the cable. Because the buffer layer on the outside of the steel wire rope is beneficial to the insulated core The combination avoids the steel wire rope stabbing and scratching the cable.

Claims (5)

1. A high-tensile power cable for deep wells, comprising an outer sheath (10), characterized in that: a conductor (7) with an insulating layer (11) is arranged in the outer sheath (10), and a conductor (7) with an insulating layer (11) is arranged in the outer sheath (10). A steel wire rope (8) is arranged between the conductor (7) of the layer (11) and the outer sheath (10), and a buffer layer (9) is arranged outside the steel wire rope (8). 2. The high-tensile power cable for deep well according to claim 1, characterized in that: the conductor (7) is made of aluminum-clad steel or copper-clad steel or copper conductor. 3. The high-tensile power cable for deep well according to claim 1, characterized in that: the buffer layer (9) is polyvinyl chloride or polyethylene. 4. The high tensile power cable for deep well according to claim 1, characterized in that: the steel wire rope (8) is made of anti-corrosion thin steel wire or thick steel wire. 5. The high-tensile power cable for deep wells according to claim 1, characterized in that: the insulated wire is composed of a steel wire rope (8) with a buffer layer (9) and a conductor (7) with an insulating layer (11) The cores are wound together in a cable.

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