Apparatus for near vertical laying of pipeline
US5421675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Nov 18, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for near vertical laying of pipeline offshore. A support frame and movable deck on a lay vessel support a tower at the desired angle for pipe laying. The tower has a travel block that is movable between open and closed positions for receiving a pipe section and supporting the weight of the pipe or pipeline. The travel block is adapted for movement along the length of the tower for raising or lowering the pipe and pipeline. A pedestal that is movable between open and closed positions for receiving a pipe section and supporting the weight of the pipeline is positioned near the bottom of the tower and adapted to transfer the weight of the pipeline from the travel block to the pedestal without the need to open the travel block. A strongback with adjustable clamps is used to grasp a pipe section from a ready rack and transfer the pipe section into the tower for addition of the pipe section to the pipeline. The strongback is guided into and up the tower by rails. A stinger extends down from the lower end of the tower and is provided with clamps to grip the pipeline during operations. The main portion of the stinger may be pivoted up adjacent the lay vessel when pipe laying o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.