Pressurizable sealing element

摘要

The invention relates to a sealing element (10) to be mounted on a plugging head (76). The plugging head (76) is introduced into an access opening in the pipeline (70) or pipe (70). The pressurizable sealing element (10) delimits at least one pressurizable cavity (22, 92) with an inner surface (78), and seals an inner wall (74) of the pipeline (70) or pipe (70) with a generated surface (16, 40, 46, 48) when a pressure pi is applied to the cavity (22, 92).

主权项

1. A sealing element configured to be mounted at a plugging head for plugging a flow section of a pipeline or pipe when the plugging head is introduced into an access opening of the pipeline or a pipe, wherein said sealing element when mounted at said plugging head delimits a single pressurizable cavity and seals an inner wall of the pipeline or the pipe when a first pressure pi is applied to the cavity, the sealing element comprising:
a lateral surface formed by only one single first axial region and only one single second axial region connected to the first axial region, the second axial region being configured to have a larger wall thickness than the first axial region, so that the lateral surface of the sealing element is asymmetrical from end to end, and a first attachment point immediately adjacent to the single first axial region and a second attachment point immediately adjacent to the single second axial region so that the first and second axial regions are disposed between and bordered by the two attachment points, wherein the attachment points are configured for attaching the sealing element to the plugging head; wherein said second axial region is configured to be hingedly deflected about the second attachment point by a second pressure pa which is to be shut off within the pipeline or pipe, and wherein the second attachment point is located at a side of the plugging head which faces away from the second pressure pa , and wherein the second axial region seals the inner wall of the pipeline or pipe in a state where the cavity is pressurized.