| 摘要 |
<p>The invention consists of an automatic two-direction cut-off device (3) for a double-walled network for transporting liquid coolant. The outer wall (2) is divided into sections (16, 17) separated by leaktight partitions (6), the device (3) according to the invention is mounted as a bridge between two sections (16, 17). When a leak occurs, a shut-off member (9) ensures that the wall sections not affected (17) are kept under constant pressure. The device (3) according to the invention has the advantage of being automatic, of not requiring the application of external energy and of being able to serve as a manoeuvring member. The device (3) according to the invention applies, more particularly, to the protection of urban heating networks.</p> |
