PROVISIONAL SEALING PANEL FOR AN INTERIOR PASSAGE TO AN ENCLOSURE ACCESSIBLE ONLY THROUGH A HOLE OF DIMENSIONS LESS THAN THOSE OF THE PASSAGE TO BE OBTAINED

摘要

1. Temporary fluid-tight obturation device for a passage (1) into a vessel accessible only through an aperture of dimensions less than those of the passage to be obturated, comprising at least two panels (5, 6, 7) articulated together by hinges (11), the periphery of the passage to be closed comprising a support collar (2) provided with threaded holes (4), characterized by the fact that the hinges are fluid-tight and flexible, that each panel comprises along its articulated edges a series of latching pins (15), and that it is further constituted by : a set of stiffeners (17) equal in number to that of the hinges (11) of the panel, each stiffener comprising two lines of holes (21) conjugate with the lines of the latching pins (15) of two contiguous panels, a frame (22) in at least two parts articulated and foldable on one another, reproducing in folded position the contour of the support collar (2) and comprising means (29, 37) to grip, with the interposition of a seal (30) the ends of the panel (5, 6, 7) and of the stiffeners (17) against the support collar (2), by screwing into the threaded holes (4).