Filling type sheath-structure cable

Abstract

The invention discloses a filling type sheath-structure cable. The filling type sheath-structure cable comprises a conductor, a conductor shielding layer, an insulation layer, an insulation shielding layer, a shielding layer and a sheath layer, wherein the conductor shielding layer is arranged outside the conductor, the insulation layer is arranged outside the conductor shielding layer, the insulation shielding layer is arranged outside the insulation layer, the shielding layer is arranged outside the insulation shielding layer, and a gap of the shielding layer is filled with the sheath layer. In the cable structure, the shielding layer is in direct contact with the insulation shielding layer, a wrapping tap is not used for wrapping the shielding layer, a sheath employs an extruded die, the gap of the shielding layer is filled with a sheath material, and the structure cable is more attractive and also has a certain water blocking effect; and meanwhile, by the cable, an optical unit and a water blocking structure can be expanded, photoelectric transmission and the longitudinal water blocking effect and the radial water blocking effect of a cable core are achieved, the application range is expanded, and the product competiveness is improved.

Description

technical field [0001] The invention relates to a power cable, in particular to a power cable with a filled sheath structure and expandable photoelectric transmission and water blocking functions. Background technique [0002] In the past, ordinary cables consisted of conductors, conductor shields, insulation, insulation shields, semi-conductive tapes, copper tapes or copper wire shields, and sheaths. Copper tapes or copper wires were wrapped with tapes. The gap between copper wires in this structure cable Large, without any filler in the middle, the structure is not beautiful, and the water blocking effect is poor. The filled sheath structure cross-linked cable has a beautiful structure and has a certain water-blocking effect. [0003] And because there is no optical fiber in the ordinary cable, it can only be used for a single power transmission purpose. The new single-core photoelectric composite cable has a beautiful structure, can transmit power and signal at the same...

AI Technical Summary

Problems solved by technology

[0004] There are two ways to realize water resistance of conductors: hard water resistance and soft water resistance. The former generally uses materials such as water resistance ointment between the conductors. Specialized ointment melting equipment, large investment and difficult coating

The latter generally uses materials such as water-blocking tape and water-blocking sand between the conductors. The water-blocking tape and water-blocking sand expand with water to realize the water-blocking function, but the use of water-blocking tape is prohibited in some areas, and the water-blocking sand needs to be combined with copper wire Stranded into the conductor together, the equipment needs to be modified, and the investment is large

[0005] In the past, the conductor was wrapped or longitudinally wrapped with water-blocking tape to realize the water-blocking function, and the insulated wire core was wrapped with water-blocking tape to realize the water-blocking function, but the use of semi-conductive resistance water tape outside the core will cause certain damage to the transmission of short-circuit current. At the same time, the gap between the copper wires is large, and the water blocking effect is general

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