Flame-retardant control cable

Abstract

The invention discloses a flame-retardant control cable, which comprises an outer sheath layer. A shielding layer is arranged in the outer sheath layer; an inner lining layer is arranged in the shielding layer; a separating layer is arranged on an inner surface of the inner lining layer; the separating layer and the inner lining layer are integrated; a cable paste filler is arranged at a connectedgap of the inner part of the inner lining layer and the separating layer; an insulating layer is arranged in the cable paste filler; a cable conductor is arranged in the insulating layer; a flame-retardant liquid protection layer is arranged on one side, located on the insulating layer, in the cable paste filler; a liquid flame-retardant liquid is arranged in the cable; when a control resistor isburned, the flame-retardant liquid protection layer on an outer wall of the liquid flame-retardant liquid is burned off, the liquid flame-retardant liquid is discharged, so that a flame retardant property of the control cable is improved, and the working safety of the control cable is improved; through the separating layer, multiple conductors in the control cable are separated in different interlayers, so that gathered heat of the cable can be reduced, and a heat radiating performance is improved to a certain degree.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a flame-retardant control cable. Background technique [0002] Control cable (control cable) is a PVC insulated and PVC sheathed control cable suitable for industrial and mining enterprises, energy and transportation departments, and used in occasions such as AC rated voltage below 450 / 750 volts to control and protect lines. The faults include mechanical damage, insulation damage, insulation damp, insulation aging and deterioration, overvoltage, cable overheating faults, etc., in various industrial and mining enterprises, transportation and other important economic sectors, such as power plants, substations, power lines and petrochemical enterprises Among them, the application of control cables is very extensive. For the operation of the production system of the safety power supply, the function of the control cables even exceeds that of the power cables used for the m...

AI Technical Summary

Problems solved by technology

[0003] Existing control cables have little research and development in terms of flame retardancy. Because the control cables generate more internal heat during operation, the internal conductors of the control cables are bonded together, and the heat generated is difficult to dissipate. Under high temperature, the insulating layer may burn, which not only affects the normal operation of the control cable, but also releases smoke, poisonous gas and other harmful gases during burning, and its working safety is difficult to guarantee. For this reason, we propose a flame retardant Control Cable

Images