A recoverable sensitive temperature-sensitive cable

Abstract

The invention discloses a recoverable flexible temperature sensing cable. A cable core is composed of three conductors and a supporting core. Each conductor comprises a wire and an insulating layer, wherein the wire is located in the middle, and the insulating layer coats the wire. The insulating layers are made of negative temperature coefficient heat sensitive material. The supporting core is composed of three metal supporting plates, and the included angle between every two adjacent metal supporting plates is 120 degrees. The three conductors are longitudinally arranged between every two adjacent metal supporting plates respectively, and the conductors adjoin to every two adjacent metal supporting plates adjacent to the corresponding conductors. A one-side metal and plastic composite belt coats the cable core, the metal layer of the one-side metal and plastic composite belt is arranged inwards, and the plastic layer of the one-side metal and plastic composite belt is arranged outwards. An inner sheath coats the one-side metal and plastic composite belt, an outer sheath coats the inner sheath, and a lubricating layer is arranged between the inner sheath and the outer sheath. The recoverable flexible temperature sensing cable is stable in structure and high in flexibility, and can be safely used in the overload or high temperature environment.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a recoverable sensitive temperature-sensitive cable. Background technique [0002] The insulation and sheath materials of ordinary power cables are generally polyvinyl chloride, cross-linked polyolefin, etc. These materials will rapidly age when the cable is overloaded or high temperature, until the cable fails. One of the most important safety current values ​​is the safety current value of the cable. The temperature of the wire itself will be different due to the heat generated by the cable load operation. When the electrical appliance exceeds the safe current overload and the temperature rises, it is impossible to quickly and directly judge the safety of the cable. [0003] The working principle of the commonly used temperature-sensing cable is that when the ambient temperature rises, the resistance between the metal wires changes, or a short circuit occurs, and an alarm output...

Images