US 11,808,719 B2
Device and method for measuring total cross-sectional phase fraction of multiphase flow based on ray coincidence measurement
Jige Chen, Wuxi (CN)
Assigned to SEA PIONEERS TECHNOLOGIES CO., LTD., Wuxi (CN)
Filed by Sea Pioneers Technologies Co., Ltd., Wuxi (CN)
Filed on Jun. 29, 2021, as Appl. No. 17/361,392.
Application 17/361,392 is a continuation in part of application No. PCT/CN2019/080005, filed on Mar. 28, 2019.
Claims priority of application No. 201811639661.3 (CN), filed on Dec. 29, 2018.
Prior Publication US 2021/0325320 A1, Oct. 21, 2021
Int. Cl. G01N 23/12 (2018.01); G01T 1/20 (2006.01); G01F 1/74 (2006.01); G01T 1/202 (2006.01)
CPC G01N 23/12 (2013.01) [G01F 1/74 (2013.01); G01T 1/202 (2013.01); G01T 1/2023 (2013.01); G01N 2223/04 (2013.01); G01N 2223/202 (2013.01); G01N 2223/505 (2013.01); G01N 2223/5055 (2013.01); G01N 2223/605 (2013.01); G01N 2223/635 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method, comprising:
1) disposing a plurality of devices in a circumferential direction of a fluid pipe under test, wherein each of the devices comprises a scintillation crystal and a detector, the scintillation crystal is coupled to the detector, and the scintillation crystal comprises lutetium-176; aligning the scintillation crystal of each device with the fluid pipe, and disposing the scintillation crystal between the fluid pipe and the detector;
2) decaying the scintillation crystal to emit intrinsic rays;
3) allowing the intrinsic rays to pass through the fluid pipe under test, and detecting, by the detector, a starting point and an end point of the intrinsic rays, and converting optical signals of the intrinsic rays, by the detector, into electrical signals;
4) acquiring corresponding lines of responses according to the intrinsic rays produced by each decay and transmission paths thereof; and
5) finding out all effective lines of responses and calculating a mass fraction of a multiphase fluid based on an energy and path of the lines of responses.