| 摘要 |
<p>A flame arrester 600 for arresting a flame in a pipeline comprises a housing 601, 602 having an internal cavity 616, 617, an outer end 608 adapted for fitment to a pipeline and a flame arresting element 603 extending across the internal cavity of said housing. Housing 601 further comprises a first aperture 605 at an outer end for passage of gas therethrough and a plate member 614 extending across a first cavity 616 between the outer end and the flame arresting element. The plate member comprises a second aperture and divides the cavity 616 into a first chamber 620 and a second chamber 618, wherein the second aperture is aligned substantially centrally along a main length axis of the housing. The plate member is arranged to block passage of a portion of any incident or reflected pressure waves from the first chamber into the second chamber and to restrict the flow of hot gas. Pressure waves that pass through the second aperture are rarefied by means of expansion into the second chamber.</p> |
