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    • 46. 发明公开
    • Brush seal
    • 刷子密封
    • EP0778431A1
    • 1997-06-11
    • EP96308802.6
    • 1996-12-04
    • ROLLS-ROYCE LIMITED
    • Morrison, Michael K.Withers, Peter A.Jones, Terence V.Wood, Peter E.
    • F16J15/32
    • F16J15/3288Y10S277/926
    • A brush seal element (14) comprises a mounting ring (20) that carries radially inwardly directed bristles (21). A backing ring (23) attached to the mounting ring (20) is positioned alongside the bristles (21). A chamber (25) defined by the bristles (21) and the backing ring (23) is pressurised with fluid to counteract the lateral forces imposed upon the bristles (21) by a region of high fluid pressure that they are operationally adjacent. As a result of this balancing of forces the bristles (21) are free to move radially inward and outward so that their free ends (22) remain in sealing engagement with an adjacent surface.
    • 刷式密封元件(14)包括承载径向向内指向的刷毛(21)的安装环(20)。 附接到安装环(20)的垫环(23)与刷毛(21)并排设置。 由刷毛(21)和垫圈(23)限定的腔室(25)被流体加压以抵消施加在刷毛(21)上的横向力在它们操作性相邻的高流体压力区域。 由于力的这种平衡,刷毛(21)可自由地径向向内和向外移动,使得它们的自由端(22)保持与相邻表面的密封接合。