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公开(公告)号：US20200300251A1
公开(公告)日：2020-09-24
申请号：US16088352
申请日：2017-03-23
摘要： The present invention provides a centrifugal compressor (1) including: a rotating shaft (2) which extends in an axial direction (D); a first impeller (3a); a second impeller (3b) which is disposed on a downstream side (D2) of the first impeller (3a); a return flow path (30) which guides a first fluid (G1) flowing to a radially outer side from the first impeller (3a) toward a radially inner side; an introduction flow path (26) which introduces the fluid guided to the radially inner side to the second impeller (3b); an intermediate suction flow path (10) which additionally supplies a second fluid (G2) to the second impeller (3b); and a curved flow path (27) which is connected to a downstream side of the introduction flow path (26) and the intermediate suction flow path (10), extends to be bent toward the downstream side (D2), and guides the first fluid and the second fluid to the second impeller (3b), wherein a side surface (26a) on an upstream side of the introduction flow path (26) is disposed on the downstream side (D2) from a return position (R) of the return flow path (30).
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公开(公告)号：US20200300252A1
公开(公告)日：2020-09-24
申请号：US16088365
申请日：2017-03-23
摘要： The present invention provides a centrifugal compressor (1) including: a first casing (19); a second casing (20) which is disposed on a downstream side of the first casing (19) and has an outer diameter larger than an outer diameter of the first casing; a first impeller (3a) which is disposed on a radially inner side of the first casing; a first return flow path (29a) which is disposed on a radially inner side of the first casing; a second impeller (3b) which is disposed on a radially inner side of the second casing and connected to a downstream side of the first return flow path (29a); an intermediate suction flow path (10) which is disposed on the radially inner side of the second casing and additionally supplies the fluid to a flow path between the first return flow path (29a) and the second impeller (3b); and a second return flow path (29b) which is disposed on the radially inner side of the second casing (20), wherein an outer diameter of the intermediate suction flow path (10) and an outer diameter of the second return flow path (29b) are larger than the outer diameter of the first casing (19).
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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
发明人： Hideki Nagao , Hiroyuki Miyata
摘要： 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：US11777383B2
公开(公告)日：2023-10-03
申请号：US16690774
申请日：2019-11-21
发明人： Koichi Mizushita
IPC分类号： H02K15/02 , H02K15/14 , H02K15/16 , F16H57/021 , F16H1/28 , F16H57/022 , F16H57/00
CPC分类号： H02K15/028 , F16H1/28 , F16H57/021 , H02K15/14 , H02K15/16 , F16H2057/0056 , F16H2057/0062 , F16H2057/0225
摘要： The present invention provides a method for manufacturing a variable speed accelerator including: a preparation step of preparing a variable speed electric motor 71 including a variable speed rotor 72 in which a shaft insertion hole 74 extending in a horizontal direction is formed, a first variable speed rotor bearing 85i and a second variable speed rotor bearing 85o that rotatably support the variable speed rotor 72 by aligning an axial direction of the variable speed rotor 72 in the horizontal direction, and a variable speed stator 86 that surrounds the variable speed rotor 72 from an outer circumferential side; and a shaft insertion step of inserting a constant speed shaft 77 into the shaft insertion hole 74 of the variable speed rotor 72 in the horizontal direction so as to penetrate the variable speed rotor 72 after the preparation step.
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公开(公告)号：US20230272872A1
公开(公告)日：2023-08-31
申请号：US18171791
申请日：2023-02-21
IPC分类号： F16L51/02
CPC分类号： F16L51/025
摘要： An expansion joint of the present disclosure includes: a first flange disposed outside a pipe; a second flange disposed outside the pipe and is disposed away from the first flange in an axial direction of the joint; a main bellows connected to the first and second flanges and in which a flow passage of a fluid is formed; and a balancing device connected to the first and second flanges outside the main bellows and applies a thrust force opposite to a thrust force, applied to the first and second flanges in the axial direction by the main bellows, to the first and second flanges, wherein the balancing device includes a fluid supply unit, an elastic portion connected to the fluid supply unit and is allowed to expand and contract in the axial direction, and a connection portion connecting the elastic portion to the first and second flanges.
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公开(公告)号：US11655728B2
公开(公告)日：2023-05-23
申请号：US17451905
申请日：2021-10-22
发明人： Teruya Yamazaki , Masanori Katada
IPC分类号： F01D17/16 , F04D29/46 , F04D29/56 , F04D29/057
CPC分类号： F01D17/162 , F04D29/462 , F04D29/563 , F05D2220/32 , F05D2250/51
摘要： A rotary machine includes a rotor that includes an impeller cap that regulates the movement of an impeller fixed to a rotary shaft that extends in an axial direction about the axis; a housing that covers a rotor; and an inlet guide vane that has a plurality of movable blades that extend from the housing toward an inner side in a radial direction and disposed at intervals in a circumferential direction, in which a blade tip portion, which is a tip end of the movable blade in the radial direction, is disposed on the outer side in the radial direction with respect to an outer peripheral surface of the impeller cap, and the position of at least a part of the blade tip portion in the axial direction overlaps the position of the impeller cap in the axial direction.
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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
发明人： Hiroyuki Miyata , Hideki Nagao
IPC分类号： F04D29/20 , F04D29/044 , F04D29/043 , F04D29/053 , F04D29/054 , F04D29/58 , F04D29/28 , F04D25/02 , F04D25/16 , F04D29/26
CPC分类号： F04D29/20 , F04D29/043 , F04D29/044 , F04D29/053 , F04D29/054 , F04D29/584 , F04D29/5846 , F04D25/028 , F04D25/163 , F04D29/266 , F04D29/284
摘要： 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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8.发明授权公开(公告)号：US11536291B2
公开(公告)日：2022-12-27
申请号：US16781308
申请日：2020-02-04
申请人： MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION , Mitsubishi Heavy Industries Compressor International Corporation
发明人： Yoshikuni Kono , Akinori Tasaki
摘要： A rotor hanging tool includes a beam extending in parallel to an axial direction above a rotor main body, a pair of ring support portions disposed at an interval in the axial direction, connected to the beam, and attachable to and detachable from a support ring, a pair of rotor support portions disposed at an interval in the axial direction, connected to the beam, attachable to and detachable from the rotor main body at positions different from the ring support portions in the axial direction, and respectively supporting the rotor main body from below, and a vertical position adjustment unit for adjusting a position of each of the rotor support portions in a vertical direction with respect to the beam.
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公开(公告)号：US11536160B2
公开(公告)日：2022-12-27
申请号：US17651467
申请日：2022-02-17
发明人： Tomoyuki Nishikawa
摘要： A steam turbine includes a rotor that rotates about an axis, a casing that covers the rotor from an outer side in a radial direction with respect to the axis, and a cover disposed outside the casing to form a hollow path portion between an outer peripheral surface of the casing and the cover, in which the cover is connected to a negative pressure source configured to put the path portion into a vacuum state, and the path portion is a space isolated from a space inside the casing.
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公开(公告)号：US20220381249A1
公开(公告)日：2022-12-01
申请号：US17655259
申请日：2022-03-17
发明人： Miku Kuroda
摘要： A centrifugal compressor includes: an impeller which is allowed to rotate around an axis; a casing in which the impeller is accommodated and a guide flow path guiding fluid to the impeller is formed; and a guide vane which is disposed in the guide flow path and is extended from a hub side wall surface of the guide flow path, which is continued to a hub side of the impeller, to a shroud side wall surface of the guide flow path to a shroud side of the impeller, wherein the guide vane is twisted forward the impeller in a rotating direction thereof as close to the shroud side wall surface from the hub side wall surface.
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