| 摘要 |
The invention relates to a safety valve for liquid flowing in a pipe, said valve comprising an inlet port, an outlet port, a pipe linking the inlet port and outlet port, a stopper (9) placed between the input port and the output port, moveable between on open pipe position and a closed pipe position, characterized in that it includes an arming actuator (300) of the stopper (200) capable of moving the stopper (200) from an open position to a closed position, a bolt (500) to maintain the stopper (200) in an open position, a bolt controller (600) maintaining the bolt in a locked position under the action of a permanent magnet and provided with a neutralizing coil (700) generating an antagonistic magnetic field to said permanent magnet to move the bolt (500) to an inactive position, the bolt (500) being configured to allow movement of the stopper (200) subjected to a force greater than the locking force of the bolt, the bolt (500) being capable of returning to its locked position as soon as the stopper (200) is in the open position, the stopper (200) being provided with a manual control portion. |
