US 12,390,938 B2
Device and method for removing foreign object from heat transfer tube
Sungkyu Yang, Gimhae (KR); Hyunsang Kong, Changwon (KR); Deokil Kim, Changwon (KR); Kideok Seong, Changwon (KR); Yoo Yang, Busan (KR); Jaebong Lee, Changwon (KR); and Taebong Lee, Jinju (KR)
Assigned to DOOSAN ENERBILITY CO., LTD., Changwon (KR)
Filed by DOOSAN ENERBILITY CO., LTD., Changwon-si (KR)
Filed on Nov. 22, 2023, as Appl. No. 18/517,308.
Claims priority of application No. 10-2023-0012031 (KR), filed on Jan. 30, 2023.
Prior Publication US 2024/0255242 A1, Aug. 1, 2024
Int. Cl. F22B 37/00 (2006.01); B25J 11/00 (2006.01)
CPC B25J 11/005 (2013.01) [F22B 37/002 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device for removing a foreign object from a heat transfer tube, the device comprising:
a reel part configured to wind or unwind a connecting tube;
a drive part, disposed adjacent to the reel part, configured to move the connecting tube in and out of a heat transfer tube and to operate so that the connecting tube is rotatable inside the heat transfer tube; and
a manipulator, disposed on an end part of the connecting tube, configured to be inserted into the heat transfer tube and to remove a foreign object placed between the heat transfer tube and an adjacent heat transfer tube,
wherein the manipulator is configured to hold and transport at least a portion of the foreign object,
wherein the manipulator comprises:
a first part fixedly coupled with the end part of the connecting tube;
a second part protruding upward from the first part along a portion of a circumference of the first part; and
third parts protruding from two opposite ends of the second part along a circumferential direction of the first part such that an inner space is defined between the second part and the third parts.