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11. 发明申请

US20220357103A1 PLANT AND METHOD FOR LIQUEFYING GAS 有权
公开(公告)号：US20220357103A1
公开(公告)日：2022-11-10
申请号：US17620979
申请日：2020-06-08
申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
发明人： Pierre BARJHOUX , Fabien DURAND , Franck DELCAYRE
IPC分类号： F25J1/02 , F25J1/00
摘要： Plant and method for liquefying a flow of gas, comprising a cooling circuit which is provided with an upstream end which is intended to be connected to a source of pressurised gas to be liquified and a downstream end which is intended to be connected to a user member, the plant comprising, between the upstream and downstream ends, a set of members which are intended to liquefy the gas and comprise at least one exchanger for cooling the gas, and at least one expansion turbine which is mounted on a rotary axle which is supported by at least one bearing of the gas-static type, the cooling circuit comprising a pressurised gas injection conduit having an upstream end which is intended to receive pressurised gas supplied by the source and a downstream end which is connected to the bearing in order to provide support to the rotary axle, the plant comprising a conduit for recovering the gas which has been used in the bearing, the conduit for recovering the gas comprising an upstream end which is connected to the bearing and a downstream end, characterised in that the downstream end of the conduit for recovering the as is connected to the cooling circuit between the upstream and downstream ends thereof in order to recycle at that location at least a portion of the gas which has been used to support the rotary axle of the bearing with a few to liquefying said gas.

12. 发明申请

US20220333859A1 REFRIGERATION DEVICE AND SYSTEM 有权
公开(公告)号：US20220333859A1
公开(公告)日：2022-10-20
申请号：US17633108
申请日：2020-07-08
申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
发明人： Fabien DURAND , Guillaume DELAUTRE
IPC分类号： F25J1/02 , F25J1/00
摘要： Disclosed is a low-temperature refrigeration device which is arranged in a frame and comprises a working circuit that forms a loop and contains a working fluid, the working circuit forming a cycle comprising, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, wherein the mechanisms for cooling and heating the working fluid comprise a common heat exchanger in which the working fluid flows in opposite directions in two separate transit portions of the working circuit, the device further comprising a refrigeration heat exchanger for extracting heat from at least one member by exchanging heat with the working fluid flowing in the working circuit, the compression mechanism comprising two separate compressors, the mechanism for cooling the working fluid comprising two cooling heat exchangers which are arranged respectively at the outlet of the two compressors and ensure heat exchange between the working fluid and a cooling fluid, wherein the frame extends in a longitudinal direction and comprises a lower base intended to be mounted on a support, the cooling heat exchangers are located in the frame about the common heat exchanger, i.e. the cooling heat exchangers are not located below the common heat exchanger between the common heat exchanger and the lower base of the frame.

13. 发明申请

US20200271129A1 COMPRESSION DEVICE AND METHOD 审中-公开
公开(公告)号：US20200271129A1
公开(公告)日：2020-08-27
申请号：US16756827
申请日：2018-08-09
申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
发明人： Fabien DURAND
IPC分类号： F04D29/58 , F04D17/12 , F04D25/06
摘要： Device and method for centrifugal compression of a working gas comprising a plurality of centrifugal compressors forming a plurality of compression stages and plurality of drive motors for driving the compressors, the device comprising a gas circuit comprising a first, inlet, pipe for the gas to be compressed, connected to an inlet of a first compressor, the circuit comprising a second pipe connected to an outlet of said first compressor, the second pipe being connected to an inlet of a second compressor, the circuit comprising at least one third, cooling, pipe having one end connected to the outlet of at least one of the compressors and at least one second end connected to an inlet of at least one motor for cooling thereof, the third, cooling, pipe comprising a first member for cooling the gas and two parallel branches respectively supplying two distinct motors of the device for their respective cooling.

14. 发明申请

US20160305708A1 DEVICE AND METHOD FOR COOLING AND/OR LOW-TEMPERATURE LIQUEFACTION 审中-公开
标题翻译：用于冷却和/或低温液化的装置和方法
公开(公告)号：US20160305708A1
公开(公告)日：2016-10-20
申请号：US15102123
申请日：2014-11-06
申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
发明人： Jean-Marc BERNHARDT , Fabien DURAND
IPC分类号： F25J1/00 , F25B31/00 , F25B1/047 , F25J1/02 , F25B1/10
CPC分类号： F25J1/0007 , F04D17/10 , F04D25/163 , F16H57/0413 , F25B1/047 , F25B1/10 , F25B31/004 , F25J1/0065 , F25J1/025 , F25J1/0279 , F25J2230/20 , F25J2270/912
摘要： The invention relates to a device for cooling and/or liquefying, at a low-temperature, a working fluid containing helium or consisting of pure helium. The device includes a working circuit provided with a compressor station and a cold box. The compressor station includes one or more compression stages, each using one or more compressors that include a compressor wheel rigidly connected to an axle that is rotatably mounted on bearings. The axle of each compressor is rotated by an output shaft of a motor via a gear mechanism placed in a mechanical housing including lubricating oil. Said device is characterized in that the inner space of the mechanical housing contains a gaseous atmosphere consisting of a gaseous mixture having a mean molar mass that smaller than the molar mass of the air.
摘要翻译：本发明涉及用于在低温下冷却和/或液化含有氦或由纯氦组成的工作流体的装置。该装置包括具有压缩机站和冷箱的工作回路。压缩机站包括一个或多个压缩级，每个压缩级使用一个或多个压缩机，其包括刚性连接到可转动地安装在轴承上的轴的压缩机叶轮。每个压缩机的轴由马达的输出轴经由设置在包括润滑油的机械壳体中的齿轮机构旋转。所述装置的特征在于，机械壳体的内部空间包含由气体混合物组成的气体气氛，其平均摩尔质量小于空气的摩尔质量。

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