A seal arrangement (73) is provided in which seal elements (77) incorporate passages (90) allowing an air flow to be presented to tip edges (78) of the seal elements, in order to create air suspension and diminish excessive wear. These passages (90) are created by recesses in the respective adjacent juxtaposed seal elements (77). In a seal assembly (71) a seal arrangement (73) is secured within a float chamber (70) whereby radial movement is allowed to accommodate for movements in the shaft (72). The radial movement is resisted by a bias created by air flow (86) into the float chamber (70). The air flow (86) may also be presented through the passages (90) in order to create the desired air suspension of the seal elements (77).
申请公布号
WO2004088180(A2)
申请公布日期
2004.10.14
申请号
WO2004GB01115
申请日期
2004.03.16
申请人
ROLLS-ROYCE PLC;NICHOLSON, RICHARD;FORFAR, JAMES, EDWARD