HEAT EXCHANGER HAVING A TUBE BEAM HAVING A CYLINDRICAL BEAM ENVELOPE HELD RADIALLY WITHIN AN EXTERNAL CYLINDRICAL ENVELOPE

摘要

P THE INVENTION CONCERNS A STEAM GENERATOR COMPRISING A BEAM OF TUBES 2 ARRANGED IN A BEAM ENVELOPE 5. / P P THE BEAM ENVELOPE 5 HAS OPENINGS IN ITS WALL CORRESPONDING TO EACH PIECE OF 20 NEXT SUPPORT ON THE EDGE OF WHICH ARE FIXED RADIALLY IN THE SPACE BETWEEN THE ENVELOPE 5 AND THE EXTERNAL WALL 3 OF THE EXCHANGER DECHALEUR. EACH OF THE SUPPORTING PARTS 20 HAS TWO CYLINDRICAL PARTS SITUATED IN THE EXTENSION OF ONE ANOTHER, A PART WITH A LARGE DIAMETER 20A WELDED BY ITS SIDE SURFACE WITHIN THE WINDOW 15 AND A SMALL DIAMETER PART 20B INTENDED FOR COMING IN SUPPORT ON THE ENVELOPE 3. SADDLES 23 ARE INTERCALE BETWEEN THE PART 20A OF THE SUPPORT PART 20 AND A PLATE 8 OF THE HEAT EXCHANGER. / P P THE INVENTION APPLIES , ESPECIALLY, THE GENERATORS OF VAPOR NUCLEAR REACTORS PRESSURIZED WATER. / P