| 摘要 |
The present invention relates to a slotted pipe provided with a fire seal consisting of at least one swing flap valve (2) or a system of swing flap valves (2), which are rotatably mounted on inner wall (11) of the slotted pipe (1) flow cross section, wherein the rotary connection of each swing flap pipe (2) mounted on the upper inner wall (11) of the flow cross section consists of a rotary joint (21) enabling the swing motion of each flap valve (2) in the direction of the liquid flow gradient, whereby each swing flap valve (2) fills up the entire inner cross section of the slotted pipe (1) such that in vertical position abuts all inner walls of the slotted pipe (1) in order to provide impassability of burning gases behind the flap valve (2), wherein the flap valve (2) lower edge (2) remains during the flap valve (2) swing, caused by the liquid flow, beneath the liquid level. |
