US 11,703,219 B2
Gas swirling state determination system and gasification melting furnace
Tomohiro Harada, Yokohama (JP); Hiroshi Oonuki, Yokohama (JP); and Keiichi Hayashi, Yokohama (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL & CHEMICAL ENGINEERING CO., LTD., Yokohama (JP)
Appl. No. 17/47,870
Filed by MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL & CHEMICAL ENGINEERING CO., LTD., Yokohama (JP)
PCT Filed May 21, 2019, PCT No. PCT/JP2019/020012
§ 371(c)(1), (2) Date Oct. 15, 2020,
PCT Pub. No. WO2019/230486, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 2018-103485 (JP), filed on May 30, 2018.
Prior Publication US 2021/0164653 A1, Jun. 3, 2021
Int. Cl. F23G 5/02 (2006.01); F23G 5/027 (2006.01); F23G 5/16 (2006.01); F23G 5/24 (2006.01); F23G 5/50 (2006.01); G06T 7/90 (2017.01); G01F 23/292 (2006.01)
CPC F23G 5/027 (2013.01) [F23G 5/16 (2013.01); F23G 5/24 (2013.01); F23G 5/50 (2013.01); F23G 2201/40 (2013.01); G01F 23/292 (2013.01); G06T 7/90 (2017.01)] 5 Claims
OG exemplary drawing
 
1. A gas swirling state determination system for determining quality of a swirling state of gas swirling around a central axis, the system comprising:
an imaging device configured to capture the swirling gas from a direction along the central axis to acquire still images;
an information processing device including a calculation unit configured to calculate luminance distribution information for each of the plurality of still images captured at different times by the imaging device to acquire a swirling speed of a centroid of the luminance or a luminance difference at a specific location of the still image as a first calculation result, a smoothing unit configured to smooth a change in the first calculation result over time to acquire a second calculation result, and a determination unit configured to compare the second calculation result with a threshold and determine the quality of the swirling state to acquire a determination result; and
a display device configured to display the determination result.