公开(公告)号：US20240360832A1

公开(公告)日：2024-10-31

申请号：US18682528

申请日：2022-08-09

Applicant: EBARA CORPORATION

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

IPC: F04D13/08 ,  F04D7/00 ,  F04D19/04

CPC classification number: F04D13/08 ,  F04D7/00 ,  F04D19/04

Abstract: 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 configured to accommodate the submersible pump therein; a vacuum line coupled to the hermetic purge container and coupled to a vacuum source; a purge-gas supply line coupled to the hermetic purge container and coupled to a purge-gas supply source; and a purge-gas supply valve mounted to the purge-gas supply line.

公开(公告)号：US20250060075A1

公开(公告)日：2025-02-20

申请号：US18721751

申请日：2022-12-21

Applicant: EBARA CORPORATION

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

IPC: F17C9/00

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

公开(公告)号：US20240360745A1

公开(公告)日：2024-10-31

申请号：US18681950

申请日：2022-08-09

Applicant: EBARA CORPORATION

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

IPC: E21B43/12 ,  E21B17/02 ,  H02G9/00 ,  H02G11/02

CPC classification number: E21B43/128 ,  E21B17/0285 ,  H02G9/00 ,  H02G11/02

Abstract: The present invention relates to a power feeding apparatus and a power feeding method for supplying electric power to a submersible pump for delivering liquefied gas, such as liquefied ammonia, liquefied natural gas (LNG), or liquid hydrogen. The power feeding apparatus includes a first electrical contact secured to the submersible pump and electrically coupled to an electric motor of the submersible pump; a second electrical contact configured to contact the first electrical contact; and a power cable electrically coupled to the second electrical contact. At least a part of the second electrical contact is located in a pump column in which the submersible pump is arranged.