Cylinder rod fire protection system
US5252005A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B35/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Fire protection for the tensioner cylinders of a marine riser tensioner system in oil and gas offshore drilling and production rigs where the tensioner cylinders are coated with intumescent epoxy and their respective cylinder rods are enclosed within outer fire protection cylinders which comprise an inner metal lining and an outer jacket. The outer jacket comprises an inner multi-layer thick blanket of ceramic fibrous materials and barrier films contained within inner and outer layers of woven ceramic fibers for reinforcement and abrasion resistance. The outer fire protection cylinders telescope over the tensioner cylinders as the cylinder rods extend and retract in response to vertical movement of the rigs. The intumescent epoxy on the tensioner cylinders are covered with a bearing sleeve to provide a smooth surface for the telescoping fire protecting cylinders and fire retardant mechanisms are located at the tops and bottoms of the telescoping cylinders to prevent intrusion of heat and flame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.