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公开(公告)号：US11435264B2
公开(公告)日：2022-09-06
申请号：US17151887
申请日：2021-01-19
Inventor： Yuichi Sasaki , Yasuhiko Kawamura
Abstract: A probe device includes a probe that detects a state of a rotary shaft, a probe holding member having a first end fixed to a bearing portion, in which the probe is fixed to the first end, a cylindrical guide sleeve inserted into a communication hole of a casing, a second end of the probe holding member being inserted into the cylindrical guide sleeve, and a plurality of elastic support members disposed at an interval in an extending direction of the probe holding member between the second end of the probe holding member and an inner peripheral surface of the guide sleeve, and formed of an elastic material to form an annular shape extending along an outer peripheral surface of the probe holding member.
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公开(公告)号：US20190330991A1
公开(公告)日：2019-10-31
申请号：US16462130
申请日：2017-02-24
Inventor： Yuzo Tsurusaki , Yuki Nakamura , Yuichi Sasaki
Abstract: A method for measuring a pre-twist amount of a blade includes a spreading dimension acquiring step, a misalignment acquiring step, a correcting step, and a pre-twist amount acquiring step. In the spreading dimension acquiring step, circumferential spreading dimensions of each shroud-of two rotor blades are acquired. In the misalignment acquiring step, a misalignment amount in the direction of the axis between the shrouds of two rotor blades adjacent to each other in the circumferential direction is measured. In the correcting step, the spreading dimension acquired in the spreading dimension acquiring step is corrected on the basis of the misalignment amount acquired by the misalignment acquiring step. In the pre-twist amount acquiring step, the pre-twist amount of the blade is acquired on the basis of the spreading dimension corrected in the correcting step.
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公开(公告)号：US11512951B2
公开(公告)日：2022-11-29
申请号：US17228015
申请日：2021-04-12
Inventor： Yasuhiko Kawamura , Kyoichi Ikeno , Yuzo Tsurusaki , Yuichi Sasaki
Abstract: The measuring jig for the rotary machine is a measuring jig for a rotary machine including a casing that extending about an axis, a rotor that is disposed in the casing and extends in an axial direction about the axis, and a plurality of bearings that are disposed at intervals in the axial direction and supports the rotor in the casing. The measuring jig includes a plurality of casing fixing portions that are respectively attachable to and detachable from bearing holding portions to which the bearings are attached in the casing; a main member that extends in the axial direction so as to connect the plurality of casing fixing portions to each other; an arm that extends from the main member in an orthogonal direction orthogonal to the axial direction; and a reference surface that is disposed at a distance from a measurement target part of the casing.
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公开(公告)号：US11384652B2
公开(公告)日：2022-07-12
申请号：US16531745
申请日：2019-08-05
Inventor： Yuichi Sasaki
Abstract: A steam turbine includes a casing which is dividable and of which both ends are open, and a bundle accommodated in the casing. The bundle includes a rotor, a plurality of diaphragms which can be divided, a bundle casing to which the diaphragm is fixed inside thereof, and a bearing portion fixed to an inside of the bundle casing on an outside of the diaphragm, and a seal portion fixed to the inside of the bundle casing between the diaphragm and the bearing portion. The bundle casing can be attached and detached to and from the casing in a state of holding the rotor, the diaphragm, the bearing portion, and the seal portion.
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公开(公告)号：US20210332722A1
公开(公告)日：2021-10-28
申请号：US16479641
申请日：2017-02-24
Inventor： Katsumi Terada , Hiroaki Irikawa , Yuichi Sasaki
Abstract: A steam turbine includes a rotor, a casing, a partition plate, and a center guide pin. The center guide pin has a positioning portion. In a state of being attached to a pin attachment portion formed in one of the casing and the partition plate, the positioning portion is disposed in a groove portion formed in the other of the casing and the partition plate. The positioning portion includes a plurality of abutment portions capable of abutting on an inner side surface of the groove portion, around a pin axis. The plurality of abutment portions is formed to have different horizontal distances from the pin axis.
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Patent Agency Ranking
公开(公告)号：US11015449B2
公开(公告)日：2021-05-25
申请号：US16702836
申请日：2019-12-04
Inventor： Takuro Koda , Yuichi Sasaki
Abstract: The present invention provides a steam turbine blade and a steam turbine capable of further improving efficiency. A steam turbine blade includes a proximal end portion T11 which is formed in a blade shape having an intermediate reaction degree, an intermediate portion T12 which is formed in a blade shape having a low reaction degree; and a distal end portion T13 which is formed in a blade shape having a high reaction degree.
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公开(公告)号：US11873720B2
公开(公告)日：2024-01-16
申请号：US17805112
申请日：2022-06-02
Inventor： Yuichi Sasaki , Yasuhiko Kawamura , Hirotoshi Abo , Kenichi Nishiyama
CPC classification number: F01D11/02 , F01D11/001 , F05D2230/30 , F05D2230/60 , F05D2230/64 , F05D2260/81
Abstract: A design method of a center guide pin includes a step of setting a virtual center axis of a casing, a step of acquiring a center position of the center guide pin in a horizontal direction, a step of acquiring, as a first offset amount, an offset amount of the center position of the center guide pin from the virtual center axis of the casing in the horizontal direction, a step of setting a virtual center axis of a diaphragm, a step of acquiring a center position of a groove portion in the horizontal direction, a step of acquiring, as a second offset amount, an offset amount of the center position of the groove portion from the virtual center axis of the diaphragm in the horizontal direction, and a step of designing the center guide pin based on the first offset amount and the second offset amount.
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公开(公告)号：US20210325177A1
公开(公告)日：2021-10-21
申请号：US17228015
申请日：2021-04-12
Inventor： Yasuhiko Kawamura , Kyoichi Ikeno , Yuzo Tsurusaki , Yuichi Sasaki
Abstract: The measuring jig for the rotary machine is a measuring jig for a rotary machine including a casing that extending about an axis, a rotor that is disposed in the casing and extends in an axial direction about the axis, and a plurality of bearings that are disposed at intervals in the axial direction and supports the rotor in the casing. The measuring jig includes a plurality of casing fixing portions that are respectively attachable to and detachable from bearing holding portions to which the bearings are attached in the casing; a main member that extends in the axial direction so as to connect the plurality of casing fixing portions to each other; an arm that extends from the main member in an orthogonal direction orthogonal to the axial direction; and a reference surface that is disposed at a distance from a measurement target part of the casing.
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公开(公告)号：US11047261B2
公开(公告)日：2021-06-29
申请号：US16330016
申请日：2016-09-05
Inventor： Katsumi Terada , Hiroaki Irikawa , Yuichi Sasaki
Abstract: A steam turbine assembling method includes an upper half assembling step of, after disposing an upper half partition plate having an upper half partition plate division surface on the inner peripheral side of an upper half casing having an upper half casing division surface, attaching an upper half position defining portion to the upper half casing and the upper half partition plate so as to form an upper half assembly, and a lower half assembling step of disposing a lower half partition plate having a lower half partition plate division surface capable of abutting against the upper half partition plate division surface on an inner peripheral side of a lower half casing having a lower half casing division surface capable of abutting against the upper half casing division surface so as to form a lower half assembly.
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公开(公告)号：US11022000B2
公开(公告)日：2021-06-01
申请号：US16328844
申请日：2016-09-05
Inventor： Katsumi Terada , Hiroaki Irikawa , Yuichi Sasaki
Abstract: A steam turbine assembling method includes: disposing an upper half partition plate having an upper half partition plate division surface on an inner peripheral side of an upper half casing having an upper half casing division surface to form an upper half assembly; and, after disposing a lower half partition plate having a lower half partition plate division surface capable of abutting against the upper half partition plate division surface on an inner peripheral side of a lower half casing having a lower half casing division surface capable of abutting against the upper half casing division surface, fixing a lower half position defining portion to the lower half partition plate in a state where a lower half abutment surface abuts against the lower half casing division surface and the lower half partition plate division surface to form a lower half assembly.
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