Device for plugging an orifice formed in the wall of a pipeline, and an assembly made up of such a device and the pipeline

摘要

The invention relates to a system for plugging an orifice (19) formed through a pipeline wall (17). The device in question comprises a support piece (3) with a depression (7) capable of forming a receptacle for a substance (29) for plugging (clogging) the orifice and means (11', 13) for positioning and immobilising the support piece (3) in order to apply it against an internal surface of the pipeline surrounding the orifice, these means including a notched rod (11') connected to a cup (dished part) (7) and interacting with an external bearing piece (5) in order to sandwich the pipeline. Application to the plugging of gas pipelines which have had to be pierced. <IMAGE>