SEAL DEVICE AND ROTARY MACHINE EQUIPPED WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a seal device capable of lessening the influence of leakage flow.SOLUTION: A seal device 5 of the present invention is the seal device 5 sealing the flow of a fluid in a direction along an axis P of a rotary shaft 2 on an outer circumferential surface 2a of the rotary shaft 2, comprises an annular main body 5a that is arranged on the outer circumferential surface 2a of the rotary shaft 2 along a circumferential direction of the axis P and in which a plurality of holes opening to an inner circumferential surface 5c so as to face the outer circumferential surface 2a of the rotary shaft 2 is formed, at least part of the holes being inclined toward at least either a front side in a rotational direction R of the rotary shaft 2 or a downstream side in the flow of the fluid along a direction of the axis P of the rotary shaft 2 as a direction of a central axis O1 of each hole is closer to a bottom of the hole from the opening thereof.