Method and apparatus and prefabricated replacement tube for localized waterwall repair
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B23K-031/02
B23K-009/028
B23P-006/00
출원번호
US-0991216
(2001-11-16)
발명자
/ 주소
Gandy, David Wayne
Hales, James William
Newell, Jr., William Frederick
Coleman, Kent K.
Frederick, Gregory J.
Tilley, Richard M.
출원인 / 주소
Electric Power Research Institute, Inc.
대리인 / 주소
Dorsey & Whitney LLP
인용정보
피인용 횟수 :
4인용 특허 :
7
초록▼
A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central opening (114) extending through a portion thereof,
A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central opening (114) extending through a portion thereof, and a predetermined length. A length of the tube (102), including the defect (112), equal to the predetermined length is removed. The replacement tube (108) is positioned between stubs (126, 128) of the tube (102), and a rotatable torch (152) of an automated welding apparatus (150) inserted through the opening (114) to align with a joint between an end (118, 120) of the replacement tube and a stub (126, 128). The torch (152) is rotated to join it to the stub (126, 128) along the entire joint. The torch (152) is then removed, turned 180 degrees, and reinserted to weld the remaining joint. Optionally, the replacement tube (108) is held in position before welding by slip rings (140, 142) which are slid down to cover the joints.
대표청구항▼
A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central opening (114) extending through a portion thereof,
A method, an apparatus (150), and a prefabricated replacement tube (108) are provided for repairing a defect (112) in a tube (102), such as in a waterwall (100). In the method, a replacement tube (108) is prefabricated having a wall (116), a central opening (114) extending through a portion thereof, and a predetermined length. A length of the tube (102), including the defect (112), equal to the predetermined length is removed. The replacement tube (108) is positioned between stubs (126, 128) of the tube (102), and a rotatable torch (152) of an automated welding apparatus (150) inserted through the opening (114) to align with a joint between an end (118, 120) of the replacement tube and a stub (126, 128). The torch (152) is rotated to join it to the stub (126, 128) along the entire joint. The torch (152) is then removed, turned 180 degrees, and reinserted to weld the remaining joint. Optionally, the replacement tube (108) is held in position before welding by slip rings (140, 142) which are slid down to cover the joints.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Powell John W. ; Dvornak Matthew J. ; King Charles C., Boiler automated welding system (BAWS).
Bowman Paul W. (Aberdeen OH) Estill Andrew F. (Augusta KY) Gatherwright Michael D. (Manchester OH) Smith Robert L. (Winchester OH), Boiler tube repair apparatus.
Bowman Paul W. (Aberdeen OH) Estill Andrew F. (Augusta KY) Gatherwright Michael D. (Manchester OH) Smith Robert L. (Winchester OH), Boiler tube repair method.
VanderPol Jerald (Eldorado Hills CA) Silber Cory J. (Sacramento CA) Astle William H. (Rancho Cordova CA), Tool support and guide system for repair of boiler tube panels and process for carrying out repair using same.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.