Abstract: In an exemplary embodiment, a seal device (10) that seals between a housing (11) and a rotation shaft (20) passing through the housing (11) includes: a floating ring (15) arranged with a gap h with respect to the rotation shaft (20), a seal portion (14) formed by bringing one end face of the floating ring (15) into contact with the housing (11), and a space portion j provided between the floating ring (15) and the housing (11), and the floating ring (15) includes bias means that contactlessly biases the floating ring (15) to the seal portion via the space portion j. The seal device in which the floating ring follows movement of the rotation shaft is capable of exerting a sealing operation so that vibration of the rotation shaft can be reduced.

Abstract: A sealing device includes a floating ring in a space between the outer circumference of a rotating shaft and the inner circumference of a housing, and a multi-layered cylindrical body including a plurality of elastically deformable cylindrical thin plates layered on top of each other provided between an outer peripheral surface of the floating ring and an inner peripheral surface of the housing, so as to impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its center position, and a tangential damping force to reduce the whirling of the rotating shaft.

Abstract: In an exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes at least one supporting means 18 that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the floating ring and the vibration damping function can be exerted, and the seal device is easily assembled.

Abstract: In an exemplary embodiment, a seal device (10) that seals between a housing (11) and a rotation shaft (20) passing through the housing (11) includes: a floating ring (15) arranged with a gap h with respect to the rotation shaft (20), a seal portion (14) formed by bringing one end face of the floating ring (15) into contact with the housing (11), and a space portion j provided between the floating ring (15) and the housing (11), and the floating ring (15) includes bias means that contactlessly biases the floating ring (15) to the seal portion via the space portion j. The seal device in which the floating ring follows movement of the rotation shaft is capable of exerting a sealing operation so that vibration of the rotation shaft can be reduced.

Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.

Abstract: In an exemplary embodiment, a sealing device includes a floating ring 5 in a space 4 between the outer circumference of a rotating shaft 3 and the inner circumference of a housing 2, and a multi-layered cylindrical body 10 including a plurality of elastically deformable cylindrical thin plates 11 layered on top of each other provided between an outer peripheral surface of the floating ring 5 and an inner peripheral surface of the housing. The sealing device can impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its center position, and a tangential damping force to reduce the whirling of the rotating shaft.

Abstract: In an exemplary embodiment, a sealing device includes a floating ring 5 in a space 4 between the outer circumference of a rotating shaft 3 and the inner circumference of a housing 2, and a permeable damping member 10 provided around an outer peripheral portion of the floating ring 5. The sealing device can impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its axis position, and a tangential damping force to reduce the whirling of the rotating shaft.

Abstract: In an exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes at least one elastically supporting means 18 that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft so that the sealing operation and vibration damping function can be exerted.

Abstract: In an exemplary embodiment, a seal device for sealing between a housing 11 and a rotating shaft 20 which penetrates through the housing 11 includes a floating ring 15 arranged on the rotating shaft 20 with a first gap h therebetween, wherein the floating ring 15 is provided with a squeeze film damper 14 with a second gap g being formed as a narrow gap between the squeeze film damper 14 and the housing 11. In the seal device, the floating ring can exhibit a sealing action by following the movement of the rotating shaft and can reduce vibrations in the circumferential direction and the radial direction of the rotating shaft.

Abstract: In exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes an aligning means 18 that contactlessly aligns a position of the floating ring 15. In the seal device, the automatic aligning operation of the seal ring is maintained even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the seal ring and the vibration damping function can be exerted.

Abstract: In an exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes at least one supporting means 18 that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the floating ring and the vibration damping function can be exerted, and the seal device is easily assembled.

Abstract: In an exemplary embodiment, a seal device 10 for sealing between a housing 11 and a rotating shaft 20 which penetrates through the housing 11 includes a floating ring 15 arranged on the rotating shaft 20 with a gap h therebetween, and is provided with a spiral foil 14 arranged between the floating ring 15 and the housing 11. In the seal device, the floating ring exhibits a sealing action by following the movement of the rotating shaft and can damp vibration of the rotating shaft.

Abstract: Provided is a split type brush seal device, brush seal pieces, and a method of assembling a split type brush seal device in which the brush seal pieces can be applied to an attached portion having an acceptable curvature. The split type brush seal device includes plural brush seal pieces having bundled wire rods, and attached members in which the plural brush seal pieces are attached to attached portions in the circumferential direction. Each of the brush seal pieces has a plate of arc shape to which the bundled wire rods are fixed. The split type brush seal device further includes a biasing member that forcibly cause a curvature of the plate to approximate to a curvature of the attached portion.

Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.

Abstract: Provided is a split type brush seal device, brush seal pieces, and a method of assembling a split type brush seal device in which the brush seal pieces can be applied to an attached portion having an acceptable curvature. The split type brush seal device includes plural brush seal pieces having bundled wire rods, and attached members in which the plural brush seal pieces are attached to attached portions in the circumferential direction. Each of the brush seal pieces has a plate of arc shape to which the bundled wire rods are fixed. The split type brush seal device further includes a biasing member that forcibly cause a curvature of the plate to approximate to a curvature of the attached portion.