Claims
- 1. Apparatus for remotely repairing tubes disposed in a tube sheet in a channel head of a steam generator having a manway disposed in said head, said apparatus comprising:
- a column rotatably disposed in said head generally perpendicular to said tube sheet;
- a boom pivotally mounted on said column;
- means for rotating said column and said boom therewith;
- means for pivoting said boom from a position generally parallel to said tube sheet to a position generally aligned with said manway;
- a carriage disposed to ride lengthwise along said boom;
- means for moving said carriage lengthwise along said boom and for affixing the position of said carriage on said boom;
- a tool operative on a tube;
- a tool holder pivotally disposed on said carriage so as to axially align said tool with the axis of a tube and to allow rotation of the tool and tool holder so that they fit through the manway;
- means for moving the tool rectilinearly, said means being disposed on said tool holder whereby said apparatus will perform repair operation on said tubes; and
- an extension for said boom whereby, when connected thereto, said carriage can be driven through said manway.
- 2. Apparatus for remotely repairing tubes disposed in a tube sheet in a channel head of a steam generator having a manway disposed in said head, said apparatus comprising:
- a column rotatably disposed in said head generally perpendicular to said tube sheet;
- a boom pivotally mounted on said column;
- means for rotating said column and said boom therewith;
- means for pivoting said boom from a position generally parallel to said tube sheet to a position generally aligned with said manway;
- a carriage disposed to ride lengthwise along said boom;
- a tool operative on a tube;
- a tool holder pivotally disposed on said carriage so as to axially align said tool with the axis of a tube and to allow rotation of the tool and tool holder so that they fit through the manway;
- means for moving said tool axially; and
- two pairs of cylinders cooperatively associated with two clamps, one cylinder in each pair operating the associated clamp to clamp said boom or release it and the other cylinder in each pair being utilized to move said carriage with respect to the associated clamp, whereby said carriage is affixed to or moved along said boom.
- 3. Apparatus as set forth in claim 1 and further comprising means for affixing the position of the boom.
- 4. Apparatus as set forth in claim 1 and further comprising means for indicating the angular position of the column and boom.
- 5. The apparatus as set forth in claim 4 and further comprising means for indicating the position of the carriage lengthwise along the boom, whereby the tool may be changed and easily and quickly returned to the proper tube.
- 6. The apparatus as set forth in claim 5 and further comprising a closed circuit TV wherein the carmera is mounted on the carriage.
- 7. The apparatus as set forth in claim 1, wherein the tool is a pneumatic hammer and welding torch, whereby it can drive a plug into a tube and form a sealed well therebetween.
- 8. The apparatus as set forth in claim 2, wherein the means for affixing the position of the boom is a cylinder attached to the boom and the cylinder has a piston rod which extends outwardly to contact the channel head.
- 9. The apparatus as set forth in claim 1, wherein the column is removably mounted in the head, whereby generally the whole apparatus can be easily removed from the head.
Parent Case Info
This is a continuation of application Ser. No. 775,676 filed Mar. 8, 1977 now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
775676 |
Mar 1977 |
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