Device for monitoring the state of pipes, pipe systems, pipelines or the like, gas or liquid media carrying devices and methods and device for laying a cable assembly for condition monitoring and communication

摘要

Device for monitoring the condition of pipes, pipe systems, pipelines, gas or liquid media-carrying devices, the media being under high pressure, and for communication or telecommunications, comprising - At least one fiber-optic, multi-mode optical fiber sensor cable acted upon by laser light and means for evaluating the transit time and intensity of the backscattered laser light in order to determine local temperature anomalies along the sensor cable, and - At least one single-mode optical fiber cable for message transmission, the cables forming a sheathed composite arrangement with compression and tension element (1), and - The cable composite arrangement is laid primarily inside the pipes or the pipe system via pressure-tight inlet and outlet connections (6), furthermore the cable composite arrangement has at least one loose tube with multimode fibers (3) and several loose tubes with a large number of single-mode fibers (2) has, which are located around the central compression and tension element (1) and are surrounded by a core winding and a sheath, the sheath (5) consisting of a plastic-coated metal band (4).