| 摘要 |
FIELD: valving. ^ SUBSTANCE: gate comprises vertical gate valve suspended on the supports above the port to be protected and provided with recesses with slots in the its top section. Between the recesses and supports are members made of inflammable materials. In front of the gate valve is a protecting perforated sheet. Under the action of the shock wave, the gate valve slides down from the members, the slots positioning above the grooves in the supports that allows the gate valve to move down under the action of gravity until it contacts with the bottom arrester and is fixed in them. The gate valve is returned to the initial position with the use of a drive which comprises drum, rollers, and ropes. ^ EFFECT: expanded functional capabilities. ^ 7 dwg |
