| 摘要 |
A fluid barrier or flood barrier consisting of a buoyant member 105 which is positioned in front of an aperture 101 in a wall 102 of a structure and adapted to rotate about a horizontal axis 107 under the influence of asymmetric buoyancy forces and reach a vertical position closing off the aperture before flood water or other errant fluids reaches the level of a threshold to the aperture. The pivot 107 is located on the side of the barrier panel closest to the wall in the upright position. It may be in the form of a hook shaped bracket and a pin (Fig 2). A seal 108 may be positioned around the exterior of the aperture for the buoyant member to seal against. The asymmetric cross sectional shape of the barrier and the positioning of the pivot improves the sealing of the barrier against the aperture. |
