US 12,467,775 B2
Void fraction sensor, flowmeter using the same, and cryogenic liquid transfer pipe
Katsumi Nakamura, Koka (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 18/274,968
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Jan. 27, 2022, PCT No. PCT/JP2022/003170
§ 371(c)(1), (2) Date Jul. 28, 2023,
PCT Pub. No. WO2022/163779, PCT Pub. Date Aug. 4, 2022.
Claims priority of application No. 2021-013401 (JP), filed on Jan. 29, 2021.
Prior Publication US 2024/0110820 A1, Apr. 4, 2024
Int. Cl. G01F 1/64 (2006.01); G01F 1/58 (2006.01); G01F 1/74 (2006.01); G01N 27/22 (2006.01); G01D 11/24 (2006.01)
CPC G01F 1/64 (2013.01) [G01F 1/584 (2013.01); G01F 1/74 (2013.01); G01N 27/22 (2013.01); G01N 27/226 (2013.01); G01D 11/245 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A void fraction sensor, comprising:
an insulating pipe having a through hole through which a cryogenic liquid flows; and
a pair of planar electrodes mounted on an outer wall surface of the insulating pipe, wherein
the insulating pipe comprises electrode mounting portions at which a distance D1 between inner wall surfaces of the insulating pipe in a direction perpendicular to electrode surfaces of the pair of planar electrodes is shorter than a distance D2 between inner wall surfaces of the insulating pipe in a direction parallel to the electrode surfaces of the pair of planar electrodes.