Shaft seal device and rotary machine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKohei Ozaki, Azumi Yoshida, Tatsuro Furusho, Shin Nishimoto
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Abstract
A shaft seal device according to at least one embodiment of the present disclosure includes: a plurality of thin plates arranged in a circumferential direction of a rotational shaft and each having a width in an axial direction of the rotational shaft and a seal ring including a seal mounting groove for mounting the plurality of thin plates. An inner wall of the seal mounting groove on one side in the axial direction has a groove formed along the circumferential direction, in an inner region in a radial direction of the rotational shaft.
Claims8
A shaft seal device, comprising:
- a plurality of thin plates arranged in a circumferential direction of a rotational shaft and each having a width in an axial direction of the rotational shaft;
- and
- a seal ring including a seal mounting groove for mounting the plurality of thin plates,
- wherein an inner wall of the seal mounting groove on one side in the axial direction has a groove formed along the circumferential direction, in an inner region in a radial direction of the rotational shaft,
- wherein the seal ring includes at least a first segment and a second segment divided in the circumferential direction, and
- wherein the groove in the first segment and the second segment includes a first region in which a depth in the axial direction has a first depth, and a second region which is closer to an end face of the first segment and the second segment in the circumferential direction than the first region and has a second depth that is greater than the first depth.
Dependencies are inferred from the claim text.