Offshore fluid swivel spare
US5797413A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86268
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid swivel arrangement comprising a vertical stack of fluid swivels mounted on a turret of a weathervaning ship, enables a spare fluid swivel to be provided without requiring an additional pipe and consequent larger diameter of fluid swivels. A pair of fluid swivels (53, 54) are provided, with one serving as a spare to be used in the event of failure of the other. A single pipe (94) extends through holes (120) in the swivels and is coupled to the inlet ports (90, 92) of both swivels, so it can direct fluid into either one. A means for controlling flow, enables the flow to be switched to either fluid swivel. The means for controlling flow can include a plug (140) for insertion into the inlet port of one of the swivels, to block the inflow of fluid thereat. The means for controlling flow can also include a valve (130) lying along the pipe between the upper and lower fluid swivels, so when the valve is closed fluid flows only to the lower fluid swivel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.