| 摘要 |
A fire stopping device includes a containment shell (4) with a heat rupturable element (6) and an intumescent filler material (10) arranged in the containment shell. The containment shell is formed of a fire resistant material capable of containing the intumescent material after the rupturable element fails. In addition, the heat rupturable element is designed to fail at a force which is lower than the intumescent filler material expansion force. In this manner, when the intumescent filler material reaches its activation temperature, it expands with a force greater than the strength of the rupture element, thereby causing the rupture element to fail. Thus, expansion of the intumescent filler material takes place in a controlled manner via the rupture element. |
