US 12,429,058 B2
Purge apparatus and purge method
Shuichiro Honda, Tokyo (JP); Tetsuji Kasatani, Tokyo (JP); Hayato Ikeda, Tokyo (JP); Mitsutaka Iwami, Tokyo (JP); Kei Wataji, Tokyo (JP); and Hyuga Kikuchi, Tokyo (JP)
Assigned to EBARA CORPORATION, Tokyo (JP)
Appl. No. 18/682,528
Filed by EBARA CORPORATION, Tokyo (JP)
PCT Filed Aug. 9, 2022, PCT No. PCT/JP2022/030387
§ 371(c)(1), (2) Date Feb. 9, 2024,
PCT Pub. No. WO2023/022062, PCT Pub. Date Feb. 23, 2023.
Claims priority of application No. 2021-132902 (JP), filed on Aug. 17, 2021.
Prior Publication US 2024/0360832 A1, Oct. 31, 2024
Int. Cl. F04D 13/08 (2006.01); F04D 7/00 (2006.01); F04D 19/04 (2006.01)
CPC F04D 13/08 (2013.01) [F04D 7/00 (2013.01); F04D 19/04 (2013.01); F17C 2227/0135 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A purge apparatus for exposing a submersible pump to purge gas, the submersible pump being used to deliver liquefied gas, the purge apparatus comprising:
a purge container configured to accommodate the submersible pump therein;
a pump cover configured to close an opening of the submersible pump;
a pump evacuation line coupled to the pump cover;
a vacuum line coupled to a vacuum source;
a purge-gas supply line coupled to a purge-gas supply source; and
a switching device configured to selectively couple the pump evacuation line to one of the vacuum line and the purge-gas supply line.