DEVICE FOR THE PLACEMENT OF AN EXTRACTION SLEEVE IN A STEAM GENERATOR TUBE AND THE APPROPRIATE EXTRACTION PROCEDURE OF A PORTION OF TUBE.

摘要

THE PLACEMENT DEVICE CONSISTS OF A GUIDE SLEEVE (75) GIVEN AT ONE OF ITS ENDS WITH LINKING ELEMENTS (77) WITH SOME CORRESPONDING ELEMENTS (87) LOCATED AT A FIRST END OF AN EXTRACTION SLEEVE (85) FASTENING (100) PROVIDED IN ONE OF ITS ENDS OF REMOVABLE LINK ELEMENTS WITH SOME CORRESPONDING ELEMENTS LOCATED IN THE SECOND END OF THE EXTRACTION SLEEVE (85) AND SOME FIXING ELEMENTS OF THE FIXING SLEEVE (100) ) OF THE TUBULAR PLATE (3). THE DEVICE ALSO CONSISTS OF ELEMENTS OF PLACEMENT OF THE EXTRACTION SLEEVE (85) AND OF INSTALLATION OF THE EXTRACTION SLEEVE (85) AS WELL AS OF THE INSTALLATION AND OF DIRECTION AND EXTRACTION OF A TAIL INJECTION SYRINGE (CONSISTING OF A MANEUVER ORGAN 17 ) AND A LONG TRANSMISSION ELEMENT (18) UNITED BY ONE OF ITS ENDS WITH THE INJECTION SYRINGE AND, BY THE OTHER END, WITH THE ORGAN OF MANEUVER (17). THE EXTRACTION SLEEVE (85) CAN BE JOINED TO THE GUIDE SLEEVE (75) AND TO THE HOLDING SLEEVE (100) TO PLACE THEM INSIDE THE TUBE (5) IN WHICH THE EXTRACTION IS CARRIED OUT. THE TAIL INJECTION SYRINGE IS LOCATED INSIDE THE SLEEVE (85) AND IS CONTROLLED MANUALLY THROUGH THE ORGAN OF MANEUVER (17) AND THE FLEXIBLE TRANSMISSION ELEMENT (18). THE INVENTION ALSO REFERS TO A PROCEDURE FOR REMOVING A PART OF THE GENERATOR TUBE AWAY FROM THE TUBE ENDS.