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公开(公告)号：US11788604B2
公开(公告)日：2023-10-17
申请号：US17936198
申请日：2022-09-28
Inventor： Hideki Nagao , Hiroyuki Miyata
Abstract: A planetary gear mechanism includes a sun gear rotatable about an axis, a first shaft that is fixed to the sun gear and is rotatable integrally with the sun gear, a plurality of planetary gears that mesh with the sun gear and are rotatable about a center line thereof parallel to the axis, an internal gear that includes internal teeth facing inside in a radial direction to mesh with the planetary gears and is rotatable about the axis, a second shaft that extends in the axial direction to be connected to the internal gear and rotates about the axis together with the internal gear, and a reinforcing member that is fixed to an outer peripheral surface of the internal gear and is formed in an annular shape of a material having a higher specific strength than that of a material forming the internal gear.
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公开(公告)号：US11649828B2
公开(公告)日：2023-05-16
申请号：US17651959
申请日：2022-02-22
Inventor： Hiroyuki Miyata , Hideki Nagao
IPC: F04D29/20 , F04D29/044 , F04D29/043 , F04D29/053 , F04D29/054 , F04D29/58 , F04D29/28 , F04D25/02 , F04D25/16 , F04D29/26
CPC classification number: F04D29/20 , F04D29/043 , F04D29/044 , F04D29/053 , F04D29/054 , F04D29/584 , F04D29/5846 , F04D25/028 , F04D25/163 , F04D29/266 , F04D29/284
Abstract: A rotary machine includes a cylindrical rotary shaft extending in a direction of an axis, a fastening bolt having a bolt body that extends in a direction of an axis O in the rotary shaft to form fastening portions at both ends, a pair of rotary bodies each having an end portion in the direction of the axis that is fixed to each of the pair of fastening portions to be in contact with an end surface of the rotary shaft in the direction of the axis, and a bolt extension mechanism that temporarily extends the bolt body in the direction of the axis.
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公开(公告)号：US20210190088A1
公开(公告)日：2021-06-24
申请号：US17125044
申请日：2020-12-17
Inventor： Hideki Nagao , Akihiro Nakaniwa
Abstract: An impeller includes a disk that has a disk shape centered on an axis, a cover that is disposed to be separated from the disk in an axial direction in which the axis extends, a plurality of blades that connect the disk and the cover to each other and are disposed at intervals in a circumferential direction around the axis, and a connection member that is disposed to be separated from the plurality of blades in the axial direction and connects the disk and the cover to each other. A plurality of the connection members are disposed at intervals in the circumferential direction at positions near an inlet of an impeller flow path with respect to front edges of the blades positioned at positions near the inlet, the impeller flow path being formed between the disk and the cover.
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公开(公告)号：US10605302B2
公开(公告)日：2020-03-31
申请号：US16066596
申请日：2016-12-26
Inventor： Takuzo Shigihara , Noriyuki Hayashi , Tadasuke Nishioka , Hideki Nagao
Abstract: A tilting pad gas bearing includes: a plurality of bearing pads disposed in a circumferential direction of a rotor; and a pivot member that swingably supports the bearing pads. Each of the bearing pads has a curved shape and includes: a pad main body supported by the pivot member; a heat insulating material layer disposed on a side of the pad main body that faces the outer circumferential surface of the rotor, and formed of a material having a thermal conductivity lower than a thermal conductivity of the pad main body; and a concave portion disposed in an outer circumferential surface on an outer circumferential side of the bearing pad in a curving direction. A base end of the pivot member is fixed to a housing, and the pivot member has a protruding portion that passes through the housing.
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公开(公告)号：US20160131115A1
公开(公告)日：2016-05-12
申请号：US14900552
申请日：2014-06-27
Applicant: EXXONMOBIL UPSTREAM RESEARCH COMPANY , MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
Inventor： Stan O. Uptigrove , Oag O. Calafell , Peter C. Rasmussen , Kazushi Mori , Hideki Nagao
CPC classification number: F03G7/04 , F01D25/24 , F02C1/02 , F05D2220/62 , F05D2230/60 , F25J1/0022 , F25J1/004 , F25J1/0042 , F25J1/005 , F25J1/0072 , F25J1/0082 , F25J1/0205 , F25J1/025 , F25J1/0257 , F25J1/0288 , F25J2230/20 , F25J2235/60 , F25J2240/02 , F25J2240/30
Abstract: An exemplary embodiment of the present techniques provides a system for decreasing a temperature of a fluid. The system includes an axial flow expander for expanding gas flowed in a direction along an axis thereof. The axial flow expander includes: an outer casing made as a unified structure having an inlet port and an outlet port. An inner casing is fixed inside the outer casing. A rotor shaft is accommodated inside the inner casing, and is aligned with the axis. A number of bearings allow the rotor shaft to rotate around the axis. Moving blades protrude from the rotor shaft and are arranged inside the gas passage in an alternating fashion with a number of stator vanes. The inner casing, the rotor shaft, the bearings, the stator vanes, and the moving blades are integrally assembled, and inserted into the outer casing in the direction along the axis.
Abstract translation: 本技术的示例性实施例提供了用于降低流体温度的系统。 该系统包括用于扩展沿着其轴线的方向流动的气体的轴向流扩张器。 轴流扩张器包括：外壳，其形成为具有入口和出口的统一结构。 内壳固定在外壳内。 转子轴容纳在内壳内部，并与轴对齐。 许多轴承允许转子轴绕轴线旋转。 活动叶片从转子轴突出并且与多个定子叶片交替地布置在气体通道的内部。 内壳体，转子轴，轴承，定子叶片和动叶片整体组装，并沿着轴线方向插入到外壳体中。
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Patent Agency Ranking
公开(公告)号：US20240026895A1
公开(公告)日：2024-01-25
申请号：US18352654
申请日：2023-07-14
Inventor： Noriyuki Okada , Nobuyori Yagi , Hideki Nagao
CPC classification number: F04D29/266 , F04D19/02 , F04D29/322
Abstract: A rotor includes a bolt fixing portion having a plurality of bolts for collectively fixing a plurality of impellers including a disk having a central shaft structure. The disk has a first fitting portion having a plurality of first protrusion portions and first recessed portions, a second fitting portion having a plurality of second protrusion portions and second recessed portions, and a plurality of bolt holes through which the first fitting portion and the second fitting portion pass and into which the bolt is inserted. The first protrusion portion is fitted into the second recessed portion of another adjacent impeller in a state where movement in the circumferential direction is restricted to each other, and the first recessed portion is fitted to the second protrusion portion of another adjacent impeller in a state where movement in the circumferential direction is restricted to each other.
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公开(公告)号：US20210207607A1
公开(公告)日：2021-07-08
申请号：US17135042
申请日：2020-12-28
Inventor： Hideki Nagao
Abstract: A compressor system includes a compressor including a rotary shaft, an impeller, and a casing, a motor including a motor rotor disposed coaxially with the rotary shaft, and a coupling shaft coupling the motor rotor to the rotary shaft. The compressor includes a compressor bearing that rotatably supports the rotary shaft, and a compressor connecting hub that is fixed to the rotary shaft at a position where the compressor connecting hub overlaps the compressor bearing in the axial direction and at a position on an inner side in the radial direction. The coupling shaft is allowed to alleviate misalignment with the compressor connecting hub. The compressor bearing rotatably supports an outer peripheral surface of the compressor connecting hub.
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公开(公告)号：US11022369B2
公开(公告)日：2021-06-01
申请号：US16060352
申请日：2016-02-09
Inventor： Hideki Nagao , Masahiro Kobayashi
IPC: F25J1/00 , B01J3/02 , F04B41/06 , F04D27/00 , F25J3/06 , F25J3/02 , F04B23/04 , F04B49/06 , F04B49/22 , G05D16/20 , F04B39/06 , F04B15/08 , F25J1/02
Abstract: A booster system for increasing pressure of an object gas includes: a first compression unit that compresses the object gas to intermediate pressure equal to or higher than the critical pressure and lower than the target pressure and generates an intermediate supercritical fluid; a cooling unit that cools the intermediate supercritical fluid with a cooling medium and generates an intermediate supercritical pressure liquid; a liquid extracting and pressure reducing unit that extracts a part of the intermediate supercritical pressure liquid; a flow regulating valve that regulates a flow rate of the extracted part of the intermediate supercritical pressure liquid; a second compression unit that increases pressure of the rest of the intermediate supercritical pressure liquid to be equal to or higher than the target pressure; and a pressure sensor that detects pressure of the intermediate supercritical pressure liquid.
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9.发明授权公开(公告)号：US10801544B2
公开(公告)日：2020-10-13
申请号：US16319370
申请日：2017-07-04
Inventor： Shuichi Isayama , Naoyuki Nagai , Takuzo Shigihara , Hideki Nagao
Abstract: A tilting pad journal bearing manufacturing method includes a first process and a second process. In the first process, a pivot fitting hole is formed on a convex curved outer circumferential surface of the tilting pad. The pivot fitting hole is recessed from the outer circumferential surface toward an inner circumferential surface and has an inner diameter smaller than an outer diameter of the distal end portion of the pivot. In the second process, a concave portion is formed on the concave curved inner circumferential surface of the tilting pad by attaching the distal end portion of the pivot to the pivot fitting hole by interference-fitting.
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10.发明申请公开(公告)号：US20180306193A1
公开(公告)日：2018-10-25
申请号：US15578489
申请日：2016-12-09
Inventor： Hideki Nagao , Tomoaki Okamura
IPC: F04D17/12 , F04D29/048 , F04D29/057 , F04D29/58
CPC classification number: F04D17/12 , F04D25/064 , F04D25/0666 , F04D29/04 , F04D29/048 , F04D29/057 , F04D29/58 , F04D29/5813
Abstract: A compressor system includes; a compression section that sucks and compresses gas; a rotor that includes the compression section; a gas bearing that supports the rotor; a dynamic-pressure generating gas supply system that supplies, to a gas supply port for dynamic pressure of the gas bearing, bleed gas from the gas pressurized by the compression section; and an external gas supply system for static pressure that supplies, to a gas supply port for static pressure of the gas bearing, external gas from outside of the compression section. The dynamic-pressure generating gas supply system and the external gas supply system for static pressure respectively include paths that are independent of each other to the gas bearing. The gas supply port for dynamic pressure and the gas supply port for static pressure are independent of each other.
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