US 12,085,538 B2
Ultrasonic phased array detection device for flaw detection of parallel tubes
Kaoru Shinoda, Osaka (JP); Masamitsu Abe, Osaka (JP); and Joichi Murakami, Osaka (JP)
Assigned to HITACHI ZOSEN CORPORATION, Osaka (JP)
Appl. No. 17/614,465
Filed by HITACHI ZOSEN CORPORATION, Osaka (JP)
PCT Filed Dec. 10, 2019, PCT No. PCT/JP2019/048308
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2020/240896, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-099852 (JP), filed on May 29, 2019.
Prior Publication US 2022/0236233 A1, Jul. 28, 2022
Int. Cl. G01N 29/265 (2006.01); G01N 29/04 (2006.01); G01N 29/44 (2006.01)
CPC G01N 29/265 (2013.01) [G01N 29/04 (2013.01); G01N 29/4418 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An ultrasonic phased array detection device for performing flaw detection testing on a welded joint sequentially for a plurality of tubes arranged in a row with an ultrasonic phased array method, the ultrasonic phased array detection device comprising:
a flaw detection testing unit to be inserted into a target tube and used to perform flaw detection testing on a welded joint of the target tube, the target tube being subjected to the flaw detection testing among the tubes;
a drive mechanism configured to rotate the flaw detection testing unit around an axis of the target tube; and
a jig to be inserted and fixed in a tube different from the target tube,
wherein an axial center of the flaw detection testing unit is configured to be inclined with respect to an axial center of the drive mechanism,
wherein the flaw detection testing unit includes:
a flaw detection part incorporating a phased array probe used to perform the ultrasonic phased array method; and
at least one pressing mechanism configured to press the flaw detection part against an inner surface of the target tube, and
wherein the at least one pressing mechanism of the flaw detection testing unit is disposed on a distal side and a proximal side of the target tube with respect to the flaw detection part.