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1.发明授权公开(公告)号：US10746182B2
公开(公告)日：2020-08-18
申请号：US15314377
申请日：2015-06-22
发明人： Yosuke Nakagawa , Naoto Yonemura , Hiroyuki Miyata , Naoki Mori
摘要： A multi-stage compressor system is a system of a multi-stage compressor in which compressors are connected in series in a plurality of stages includes a control unit. The control unit determines whether a malfunction is present in the system by comparing a suction flow rate of a first-stage compressor measured by a first sensor with a downstream flow rate from an outlet of the multi-stage compressor measured by a second sensor.
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公开(公告)号：US10400774B2
公开(公告)日：2019-09-03
申请号：US15314394
申请日：2015-06-22
发明人： Yosuke Nakagawa , Naoto Yonemura , Hiroyuki Miyata , Naoki Mori
摘要： A multi-stage compression system in which gases compressed by a pair of first-stage compressors are compressed by subsequent compressors connected to the first-stage compressors in series includes a valve control unit configured to output open/close signals for opening/closing valves for adjusting flow rates of gases flowing into the first-stage compressors provided at inlet sides of the first-stage compressors. The valve control unit outputs an open/close signal having a difference less than or equal to a predetermined value with respect to a degree of opening of the valve before malfunction determination as the open/close signal until a malfunction is eliminated after the determination of the malfunction in which one of the valves does not have a degree of opening according to the open/close signal.
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公开(公告)号：US11656026B2
公开(公告)日：2023-05-23
申请号：US16838416
申请日：2020-04-02
发明人： Naoto Yonemura , Hiroyuki Miyata , Hideki Nagao
CPC分类号： F25J1/0027 , F04D17/12 , F25J3/0266 , F25J3/067 , F25J2215/04 , F25J2230/04 , F25J2230/20 , F25J2230/80 , F25J2235/80 , F25J2270/02 , F25J2270/80 , Y02C20/40
摘要： A compressing system includes a compression section that compresses a target gas to an intermediate pressure, which is equal to or higher than a critical pressure and lower than a target pressure to generate an intermediate supercritical fluid, a cooling section that cools the intermediate supercritical fluid generated in the compression section to near a critical temperature to generate an intermediate supercritical pressure liquid, and a pumping section that compresses the intermediate supercritical pressure liquid generated in the cooling section to a pressure that is equal to or higher than the target pressure. At least one of the intermediate supercritical pressure liquid compressed in the pumping section, a low-temperature liquid generated by extracting the intermediate supercritical pressure liquid on the upstream side of the pumping section to reduce pressure to near the critical pressure, and an external cooling medium is used as a cooling medium in the cooling section.
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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：US20200056550A1
公开(公告)日：2020-02-20
申请号：US16485842
申请日：2018-02-15
发明人： Yosuke Nakagawa , Naoto Yonemura , Kazuhiro Jahami
摘要： A control device configured to control an inflow adjusting unit that quantitatively adjusts an inflow of a gas into a compressor and to control a valve provided in a second flow passage branching from a first flow passage from the compressor to a compressed gas supply destination includes: a command calculating unit that is configured to calculate a command value for at least any one of the inflow adjusting unit and the valve; and a correction value calculating unit that is configured to calculate a correction value with respect to a command value for at least any one of the inflow adjusting unit and the valve.
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公开(公告)号：US10480422B2
公开(公告)日：2019-11-19
申请号：US15114569
申请日：2014-07-31
发明人： Yosuke Nakagawa , Naoto Yonemura , Kazuhiro Jahami
摘要： A control device (101) that controls a fuel gas supply system (100) that comprises: a compressor (1) that supplies compressed fuel gas to a load apparatus (15); an inflow amount regulating means (5) that regulates the amount of fuel gas that flows into the compressor (1); and an anti-surge valve (7) that is for returning to an inlet side of the compressor (1) fuel gas that is discharged from the compressor (1). The control device (101) comprises: a main pressure-control unit (101a) that controls the inflow amount regulating means (5) and the anti-surge valve (7) on the basis of a feedforward control value that is generated on the basis of the load of the load apparatus (15) and of a prescribed conversion process, and on the basis of a feedback control value that is generated on the basis of the deviation between a set value and a measured value for the discharge pressure of the compressor (1); and an emergency pressure-control unit (101b) that calculates a bias-added control value that is found by adding a predetermined bias value to an anti-surge valve control value that is for controlling the anti-surge valve (7) and that is calculated on the basis of at least one of the feedforward control value and the feedback control value, and that, on the basis of the occurrence of load variations that are at or above a prescribed value, switches between the anti-surge control value and the bias-added control value and controls the anti-surge valve (7).
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公开(公告)号：US10190600B2
公开(公告)日：2019-01-29
申请号：US15548590
申请日：2016-09-14
发明人： Hideki Nagao , Naoto Yonemura
IPC分类号： F04B41/06 , F04D29/58 , B01J19/00 , B01J3/00 , F04C29/04 , F04D27/00 , F25B19/00 , F04B49/06
摘要： A pressure increasing system includes a plurality of stages of compressors configured to compress carbon dioxide to a pressure higher than a critical pressure; intermediate coolers cooling the carbon dioxide discharged from a compressor in a preceding stage; a subcooler provided between a seventh stage compressor in the final stage and a sixth stage compressor in a preceding stage and cools the carbon dioxide; a bypass line through which the carbon dioxide in the inlet of the seventh stage compressor is extracted, depressurized and supplied to the subcooler as a refrigerant; a flow rate adjusting valve provided on the bypass line; and a control unit configured to regulate a degree of opening of the flow rate adjusting valve so that at least one of a temperature and a pressure of the carbon dioxide in the inlet of the seventh stage compressor remains constant.
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公开(公告)号：US20230175517A1
公开(公告)日：2023-06-08
申请号：US18059623
申请日：2022-11-29
CPC分类号： F04D25/163 , F04D13/028 , F05D2260/4031
摘要： An integrally geared compressor includes: a drive gear rotated by a motor; an intermediate gear meshing with the drive gear; a first drive side pinion meshing with the drive gear; a first intermediate side pinion meshing with the intermediate gear; a second intermediate side pinion meshing with the intermediate gear at a position away from the drive gear and the first intermediate side pinion; a first compression unit compressing a working fluid by rotation of the first drive side pinion; a second compression unit compressing a working fluid by rotation of the first intermediate side pinion; and a uniaxial multi-stage compressor further compressing the working fluid compressed by at least one of the first compression unit and the second compression unit.
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公开(公告)号：US11261801B2
公开(公告)日：2022-03-01
申请号：US16485842
申请日：2018-02-15
发明人： Yosuke Nakagawa , Naoto Yonemura , Kazuhiro Jahami
摘要： A control device configured to control an inflow adjusting unit that quantitatively adjusts an inflow of a gas into a compressor and to control a valve provided in a second flow passage branching from a first flow passage from the compressor to a compressed gas supply destination includes: a command calculating unit that is configured to calculate a command value for at least any one of the inflow adjusting unit and the valve; and a correction value calculating unit that is configured to calculate a correction value with respect to a command value for at least any one of the inflow adjusting unit and the valve.
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公开(公告)号：US10767508B2
公开(公告)日：2020-09-08
申请号：US15771060
申请日：2016-02-09
摘要： A gas expander includes: a casing where a swirl chamber for a gas to be expanded is formed; a turbine wheel that is housed in the casing and rotationally driven by the expanded gas; a diffuser that is mounted to the casing in a direction of a rotating shaft of the turbine wheel and includes a flow path for the expanded gas to flow in the direction of the rotating shaft; a swirl stopper that is disposed in the diffuser, faces a downstream front end surface of a boss of the turbine wheel that faces the flow path, and includes a closed swirl stopping surface that is disposed to face the downstream front end surface of the boss with a gap between the closed swirl stopping surface and the downstream front end surface; and a swirl preventing plate that circumferentially partition the flow path in the diffuser.
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