| 摘要 |
The invention relates to a fire valve made of a body (100) consisting of a frame (50) and a tunnel (10) in which a butterfly damper (200) is pivotably mounted between a closed position, separating an inner side (I) from an outer side (E), and an open holding position. The body (100) and the butterfly damper (200) formed by a blade (210) are each produced by assembling cut and pasted refractory sand-lime plates (11, 51, 211). The assembly forming the body (100) and that forming the butterfly damper (200) are provided with steel reinforcements directly attached to the plate assemblies. The reinforcements (60, 70) of the body (100) are attached onto the outer side of the tunnel (10) and of the frame (50) and the reinforcements (240, 250) of the butterfly damper (200) are attached onto both sides of the blade (210). The butterfly damper is locked by the expansion of the metal elements. |
| 主权项 |
1. A fire stop valve mounted to a wall around an opening in the wall, said fire stop valve comprising:
a member including a frame and a tunnel, said frame and said tunnel each having exterior surfaces, said tunnel further having an interior; a butterfly damper mounted within said interior of said tunnel, said butterfly damper pivotable about a pivot axis between an open position, and a closed position in which said butterfly damper separates an outer side of said member from an inner side of said member which is directly exposed to heat; said member and said butterfly damper each formed by an assembly of refractory plates adhesively bonded to one another, said frame including a refractory plate in direct abutment with the wall without any metal component disposed therebetween; said member and said butterfly damper each provided with steel reinforcements directly fixed to respective said plate assemblies thereof, wherein:
said reinforcements of said member comprise a belt formed of a plurality of separate, elongate members each having an L-shaped cross section with first and second branches, one of said first and second branches respectively fixed to a respective said exterior surface of said frame and the other of said first and second branches in abutment with said tunnel, said elongate members each disposed in their entirety on said outer side of said member with said first and second branches in respective abutment only with said refractory plates of said frame and tunnel of said member, said L-shaped members connected to one another at respective corners without being fixed to one another to thereby allow movement of said L-shaped members with respect to one another to accommodate thermal expansion;said reinforcements of said butterfly damper fixed to each of two opposite faces of said plate assembly of said butterfly damper; and said interior of said tunnel including a first seat on said inner side of said member and a second seat on said outer side of said member, said plate assembly of said butterfly damper abutting said first and second seats in said closed position, said first and second seats each interposed between an inner surface of said tunnel and a sheet metal component secured by screws against said inner surface of said tunnel; and said tunnel further comprises, at an outer end of said tunnel disposed opposite said frame, an external frame having a U-shaped cross section, said U-shaped cross section opening in a direction perpendicular to an axial extent of said tunnel, said external frame fixed to plates carried by an external wall of said tunnel, said external frame including extensions extending in a direction perpendicular to said axial extent of said tunnel and received in openings of said plates. |
