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公开(公告)号：US20210231026A1
公开(公告)日：2021-07-29
申请号：US17153222
申请日：2021-01-20
发明人： Kenichi Nishiyama
摘要： A valve drive device includes a hydraulic cylinder that is configured to drive a regulating valve, an actuator that is configured to supply hydraulic oil to the hydraulic cylinder, and a connection pipe through which the hydraulic cylinder with the actuator communicate with each other and the hydraulic oil flows. The hydraulic cylinder includes a cylinder body to which the hydraulic oil is supplied, a piston movable in a central axis direction of the cylinder body by the hydraulic oil supplied to the cylinder body, and a cylinder base on which the cylinder body is placed in a state where the central axis direction is coincident with a vertical direction. The cylinder base has hydraulic oil flow path portion connected to the connection pipe and through which the hydraulic oil flows.
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公开(公告)号：US11073020B2
公开(公告)日：2021-07-27
申请号：US14671081
申请日：2015-03-27
发明人： Nobuyori Yagi , Daisuke Hirata
摘要： An impeller includes a disk section having a tube section with a grip section which is fixed by thermal deformation to a rotary shaft that is configured to rotate around an axis line, and a main disk body, which is on another end in an axial direction from the grip section and which extends outward in a radial direction of the rotary shaft; and blade sections that protrude from the main disk body in the axial direction. The disk section has a hoop stress-limiting section with a tube section which extends further towards the other end in the axial direction than the main disk body.
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公开(公告)号：US20210190181A1
公开(公告)日：2021-06-24
申请号：US16076134
申请日：2016-05-12
摘要： A variable-speed speed-up mechanism (1) includes an electric device (50) and a transmission device (10). In the transmission (10), an internal gear carrier shaft (37) forms a constant-speed input shaft (Ac), and a planetary gear carrier shaft (27) forms a variable-speed input shaft (Av). The electric device (50) includes a constant-speed electric motor (51) having a constant-speed rotor (52) which is configured to rotate the constant-speed input shaft (Ac), and a variable-speed electric motor (71) having a variable-speed rotor (72) which is connected to the variable-speed input shaft (Ac). The variable-speed speed-up mechanism (1) further includes a brake mechanism (200) which is configured to detect an abnormal state of the variable-speed electric motor (71), stop the rotation of at least one of the variable-speed input shaft (Ac) and the variable-speed rotor (72), and continue the rotation of the constant-speed rotor (52).
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公开(公告)号：US20210190078A1
公开(公告)日：2021-06-24
申请号：US16757534
申请日：2018-11-29
摘要： A multi-stage centrifugal compressor includes: a rotary shaft that is configured to rotate around an axis; a plurality of stages of impellers that are fixed to the rotary shaft and are configured to integrally rotate to compress and deliver a fluid, which flows into the impellers from an upstream side in an axial direction, to a radial outer side; a casing including a return flow path that is configured to guide the fluid, which is compressed and delivered from an impeller on a preceding stage side, toward a radial inner side, and an introduction flow path that is connected to a downstream side of the return flow path and is configured to divert the fluid and introduce the fluid to an impeller on a succeeding stage side; and return vanes that are arranged in the return flow path while being spaced apart from each other in a circumferential direction.
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公开(公告)号：US11041401B2
公开(公告)日：2021-06-22
申请号：US16475883
申请日：2017-02-06
发明人： Takashi Oda
摘要： An inlet guide vane includes: a movable vane that has a vane main body and a shaft portion disposed in an end portion of the vane main body; a frame that has an insertion hole into which the shaft portion is to be inserted; a plurality of bearing portions that are arranged inside the insertion hole at an interval in a direction of a central axis of the shaft portion and that support the shaft portion to be rotatable around the central axis with respect to the frame; and a seal portion that is located inside the insertion hole between the plurality of bearing portions in the direction of the central axis and that seals an area between the insertion hole and the shaft portion.
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公开(公告)号：US10954959B2
公开(公告)日：2021-03-23
申请号：US16116242
申请日：2018-08-29
发明人： Hideki Yamada , Jun Koyanagi
摘要： A compressor includes: an upper half casing having upper half casing parting planes; upper half diaphragms configured to be disposed on an inner circumferential side of the upper half casing and having upper half diaphragm parting planes; and upper half position regulating parts that regulate positions of the upper half casing and the upper half diaphragms. The upper half position regulating parts are fixed to at least one of the upper half casing and one of the upper half diaphragms, and have upper half abutting members at which upper half abutting surfaces, each of which comes into contact with an upper half casing recessed surface of the upper half casing and an upper half diaphragm recessed surface of the upper half diaphragm, are formed.
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公开(公告)号：US10947988B2
公开(公告)日：2021-03-16
申请号：US15562199
申请日：2015-10-26
发明人： Shin Yanagisawa , Nobuyori Yagi , Jo Masutani , Kazuki Chiba
IPC分类号： F04D29/44 , F04D29/30 , F04D29/28 , F04D29/053 , F04D29/42
摘要： An impeller includes a disk formed in a disk shape about an axis, and a plurality of blades provided at intervals in a circumferential direction on one side in the axial direction of the disk. The blades define a flow path extending from one side in the axial direction toward a radial outer side and include a low-rigidity region and a high-rigidity region. The low-rigidity region has an inlet, an outlet of the extending region of the flow path, a relatively small plate thickness, and has a relatively small inclination angle with respect to the disk. The high-rigidity region adjacent to the low-rigidity region has a relatively large plate thickness, and a relatively large inclination angle with respect to the disk.
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公开(公告)号：US10914319B2
公开(公告)日：2021-02-09
申请号：US16078819
申请日：2016-02-26
摘要： A cooling device includes a cooler disposed inside a shell, an inlet nozzle that is configured to feed a fluid into the shell, an outlet nozzle that is configured to feed the fluid passing through the cooler so as to flow outward, and a guide member that is configured to change a flowing direction of the fluid. The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid, and an uneven portion formed in at least a portion of a peripheral edge portion of the collision surface.
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公开(公告)号：US20200340621A1
公开(公告)日：2020-10-29
申请号：US16855295
申请日：2020-04-22
摘要： A lubricating oil tank includes: a tank casing having an introduction part into which lubricating oil is introduced and a discharge part through which the lubricating oil is discharged; a plurality of receiving parts which are disposed between the introduction part and the discharge part in the tank casing and which is configured to receive the lubricating oil introduced from the introduction part: and a lubricating oil delivery part which is configured to deliver the lubricating oil from one of the plurality of receiving parts to another one of the plurality of receiving parts between the plurality of receiving parts.
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公开(公告)号：US10808728B2
公开(公告)日：2020-10-20
申请号：US16176842
申请日：2018-10-31
发明人： Shinichiro Tokuyama
摘要： A multistage centrifugal compressor includes a casing, a rotor including a plurality of impellers, a diaphragm defining a gas flow path that includes a return flow path, and at least one liquid injection device configured to inject liquid into the gas flow path. The liquid injection device includes a liquid injection path, an internal path, a chamber, and a plurality of nozzles. The liquid injection path penetrates through the casing at a position corresponding to a return bend. The internal path receives a liquid supply pipe inserted from the liquid injection path through the return bend. The chamber is provided in the diaphragm along a circumferential direction and the liquid is introduced into the chamber through the internal path. The plurality of nozzles inject the liquid introduced into the chamber, to the gas flow path from different positions of the chamber in the circumferential direction.
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