| 摘要 |
<p>A shut-off device, in particular for application in the extraction of natural gas and mineral oil, has a shut-off housing (3)comprising an admission channel (2)and in which a shut-off organ (4)is supported in an adjustable manner relative to the admission channel (2)between an open position (5)and a closed position (6), and has an actuating device (7)at least for adjusting the shut-off organ (4)from the open position (5)into the closed position (6). To improve such a shut-off device in that, especially in an emergency, fast adjustment of the shut-off organ to the closed position is possible in a constructively easy and economical manner, the actuating device comprises a gas generation device (8)for the production of an adjustment pressure for adjusting the shut-off organ (4)in the direction of the closed position(6).</p> |
