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9 条记录 (耗时 0.018 秒)

    BUFFER GATE, PUMP INTRODUCTION METHOD, AND PUMP LIFTING METHOD
    2.
    发明公开
    BUFFER GATE, PUMP INTRODUCTION METHOD, AND PUMP LIFTING METHOD 审中-公开

    公开(公告)号：EP4462010A1

    公开(公告)日：2024-11-13

    申请号：EP22858384.5

    申请日：2022-08-09

    申请人： EBARA CORPORATION

    发明人： HONDA, Shuichiro ,  KASATANI, Tetsuji ,  IKEDA, Hayato ,  IWAMI, Mitsutaka ,  WATAJI, Kei ,  KIKUCHI, Hyuga

    IPC分类号： F17C9/00 ,  F17C13/00

    摘要： The present invention relates to a buffer gate for use in isolating inside and outside of a pump column when a submersible pump for pressurizing liquefied gas, such as liquid hydrogen, is carried into the pump column and when the submersible pump is pulled up from the pump column. The buffer gate (1) is configured to isolate the inside and the outside of the pump column (3) in which the submersible pump (2) is disposed, the submersible pump (2) being for delivering the liquefied gas. The buffer gate (1) includes a buffer box (14) having a buffer chamber (12) therein, a first partition wall (16) configured to close an upper opening of the buffer box (14), a second partition wall (17) configured to close an upper opening of the pump column (3), and a purge-gas inlet port (20) communicating with the buffer chamber (12). The buffer box (14) is fixed to an upper end of the pump column (3).

    CONTAINER, PUMP SYSTEM, AND MAINTENANCE METHOD
    3.
    发明公开
    CONTAINER, PUMP SYSTEM, AND MAINTENANCE METHOD 审中-公开

    公开(公告)号：EP4455539A1

    公开(公告)日：2024-10-30

    申请号：EP22911293.3

    申请日：2022-12-21

    申请人： EBARA CORPORATION

    发明人： KASATANI, Tetsuji ,  HONDA, Shuichiro ,  IWAMI, Mitsutaka ,  WATAJI, Kei ,  KIKUCHI, Hyuga ,  SUZUKI, Asaki

    IPC分类号： F17C13/00

    摘要： A hollow container (13) is provided above a hollow column (11) around a liquefied gas pump (P). The container (13) includes: an openable and closable lower plate members (22a, b) at a lower part of the container (13); manual opening/closing devices (34a, b) to be operated to open and close the lower plate members (22a, b) inside the container (13); glove boxes (35a, b) configured to allow a user to insert his or her hands from outside the container (13) in order to operate the manual opening/closing devices (34a, b) inside the container (13); and work windows (33a, b) arranged near the glove boxes (35a, b) and the manual opening/closing devices (34a, b) so that the glove boxes (35a, b) and manual opening/closing devices (34a, b) are visible from outside the container (13).

    SEALING SYSTEM AND PUMP SYSTEM PROVIDED WITH SEALING SYSTEM
    4.
    发明公开
    SEALING SYSTEM AND PUMP SYSTEM PROVIDED WITH SEALING SYSTEM 审中-公开

    公开(公告)号：EP3825555A1

    公开(公告)日：2021-05-26

    申请号：EP19837694.9

    申请日：2019-07-19

    申请人： Ebara Corporation

    发明人： KASATANI, Tetsuji ,  HONDA, Shuichiro

    IPC分类号： F04D29/12 ,  F04D7/02 ,  F16J15/18 ,  F16J15/34 ,  F16J15/44 ,  F16J15/447

    摘要： The present invention relates to a sealing system for a pump configured to pressurize a volatile liquid, such as liquid ammonia. The sealing system (2) includes a stuffing box (35) forming a barrier chamber (30) and a pump-side seal chamber (43), a mechanical seal (20) arranged in the barrier chamber (30), and a barrier-gas supply system (32) for supplying a barrier gas into the barrier chamber (30). The barrier gas has a pressure higher than a pressure of the volatile liquid in the pump-side seal chamber (43). The pump-side seal chamber (43) is located between an impeller (7) of the pump (1) and the mechanical seal (20). The barrier-gas supply system (32) includes a pressure control valve (50) configured to maintain a constant difference between pressure in the barrier chamber (30) and pressure in the pump-side seal chamber (43).

    INTEGRALLY PORTABLE PURGE CONTAINER AND METHOD FOR USING SAME
    7.
    发明公开
    INTEGRALLY PORTABLE PURGE CONTAINER AND METHOD FOR USING SAME 审中-实审

    公开(公告)号：EP4390209A1

    公开(公告)日：2024-06-26

    申请号：EP22858379.5

    申请日：2022-08-09

    申请人： Ebara Corporation

    发明人： HONDA, Shuichiro ,  KASATANI, Tetsuji ,  IKEDA, Hayato ,  IWAMI, Mitsutaka

    IPC分类号： F17C13/00 ,  F04D13/08

    CPC分类号： F17C13/00 ,  F04D13/08

    摘要： An integrally-transportable purge container capable of preventing entry of air when a submersible pump is carried into a pump column, and capable of warming the submersible pump when it is removed from the pump column to prevent components of the air from being liquefied is provided. The integrally-transportable purge container (1) includes: a container body (21) having an interior space (20) for accommodating a submersible pump (2) therein; an upper lid (23) configured to cover an upper opening of the container body (21); a lower lid (24) configured to cover a lower opening of the container body (21); and a purge-gas inlet port (27) and a purge-gas outlet port (28) communicating with the interior space (20) of the container body (21). The integrally-transportable purge container (1) is detachably coupled to an upper portion of a pump column (3) in which the submersible pump (2) is to be installed. The integrally-transportable purge container (1) is configured to be transportable together with the submersible pump (2).

    PURGING DEVICE AND PURGING METHOD
    8.
    发明公开
    PURGING DEVICE AND PURGING METHOD 审中-实审

    公开(公告)号：EP4390126A1

    公开(公告)日：2024-06-26

    申请号：EP22858383.7

    申请日：2022-08-09

    申请人： EBARA CORPORATION

    发明人： HONDA, Shuichiro ,  KASATANI, Tetsuji ,  IKEDA, Hayato ,  IWAMI, Mitsutaka ,  WATAJI, Kei ,  KIKUCHI, Hyuga

    IPC分类号： F04B15/08 ,  F04D7/00 ,  F04D13/08 ,  F04B53/22 ,  F04D29/60

    CPC分类号： F04B15/08 ,  F04D13/08 ,  F04D29/60 ,  F04D7/00 ,  F04B53/22

    摘要： A purge apparatus is provided. The purge apparatus is capable of preventing air from being entrained when a submersible pump is moved into a pump column, and capable of warming the submersible pump when the submersible pump is removed from the pump column to thereby prevent component of the air from being liquefied, thus preventing the liquefied gas from being emitted in the atmosphere. The purge apparatus includes a hermetic purge container (1) configured to accommodate the submersible pump (2) therein; a vacuum line (37) coupled to the hermetic purge container (1) and coupled to a vacuum source (39); a purge-gas supply line (38) coupled to the hermetic purge container (1) and coupled to a purge-gas supply source (40B); and a purge-gas supply valve (35) mounted to the purge-gas supply line (38).

    FLOW PATH SWITCHING DEVICE AND METHOD FOR PREVENTING DRY RUNNING OF SUBMERGED-TYPE PUMP
    9.
    发明公开
    FLOW PATH SWITCHING DEVICE AND METHOD FOR PREVENTING DRY RUNNING OF SUBMERGED-TYPE PUMP 审中-公开

    公开(公告)号：EP4253759A1

    公开(公告)日：2023-10-04

    申请号：EP21897428.5

    申请日：2021-08-27

    申请人： EBARA CORPORATION

    发明人： HONDA, Shuichiro ,  KASATANI, Tetsuji ,  IKEDA, Hayato ,  IWAMI, Mitsutaka

    IPC分类号： F04D7/02 ,  F04D13/08 ,  F04D29/44

    摘要： The present invention relates to a technique of preventing idling rotation of a submersible pump used for delivering liquefied gas, such as liquefied ammonia, liquid hydrogen, liquid nitrogen, liquefied natural gas, liquefied ethylene gas, or liquefied petroleum gas. A fluid-path switching apparatus (5) includes: a flow-passage structure (45) having a first flow passage (41), a second flow passage (42), and a third flow passage (43); and a valve element (47) for allowing the third flow passage (43) to selectively communicate with the first flow passage (41) or the second flow passage (42). The first flow passage (41) communicates with a discharge outlet (1b) of the submersible pump (1), the second flow passage (42) communicates with an interior of the suction vessel (2), and the third flow passage (43) communicates with a discharge port (8) of the suction vessel (2).