| 摘要 |
<p>The present invention relates to a leaf seal assembly 11 for providing a fluidic seal between a first member 30 and a second member 20. The leaf seal assembly comprises first and second cover plates 3, 5 defining a channel 7 therebetween, the first cover plate having a first edge and the second cover plate having a second edge. A plurality of leaf elements 11 are located within the channel, each leaf element having first and second edges 11a, 11b adjacent to the first and second cover plates respectively, and a projecting portion of each leaf element extends beyond the first and second edges of the first and second cover plates. The seal assembly 11 is configured such that when it is located between a first member and a second member, a fluid flow 36 in a first direction from the first cover plate side 3 of the seal assembly to the second cover plate side 5 of the seal assembly causes the plurality of leaf elements 11 to move away from the first member 30 to create a fluid passage between the plurality of leaf elements and the first member, thereby allowing a flow of fluid through the seal in the first direction; and a fluid flow 36 in a second direction from the second cover plate side 5 of the seal assembly to the first cover plate side 5 of the assembly causes the plurality of leaf elements 11 to move towards the first member 30 such that a third edge 11 c of the projecting portion of each of the leaf elements contacts the first member, thereby opposing the flow of fluid through the seal in the second direction.</p> |
