| 摘要 |
The invention relates to a detecting element (200) used for detecting leaks of electrically nonconductive liquid, in particular of hydrocarbons, as well as a detection cable (500) and a detection system (590-790) using such a detecting element. The detecting element (200) includes a detection member (114) made of a material, such as silicone, which inflates upon contact with said liquid and which is loaded with electrically conductive particles, such as to be conductive when not contaminated by said liquid, and such as to lose the conductivity thereof when inflating from contact with said liquid. Said detection member (114) is electrically connected to an electronic management module (210), which is arranged for detecting the presence of said liquid by noticing a decrease in the conductivity of said detection member, typically by means of an ohmic measurement. In a preferred embodiment, the detection cable includes four insulated conductive wires, one of which is embedded in the detection member (114) which is itself protected by an inflatable casing (116), which is also insulating and water-proof. Said four conductive wires (106, 110, 424, 424) are twisted around a fifth insulated conductive wire, the whole being surrounded by a perforated extruded sheath (116). |
