Apparatus for applying heat to a portion of a pipeline
US4515562A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1984 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Aug 29, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to apparatus for applying heat to a portion of a pipeline, particularly a pipeline carrying natural gas, for the purpose of curing a heat shrinkable plastic sleeve used to repair leaks in the pipeline wall. The apparatus comprises an elongate manifold 1 for mounting on the pipeline and having an inlet 5 to receive hot gas from a forced draught gas burner 6 and an outlet 8 to discharge the hot gas along the portion of the pipeline. The apparatus also comprises a flexible blanket 2 of a heat insulated material such as illuminated glass wool and having one edge 71 for securing to the manifold 1 so that the blanket 2 can be wrapped around the portion of the pipeline to form therearound a heat shroud having openings 75 and 76 respectively to receive hot gas from the manifold outlet 8 and to discharge the gas after circulation around the wall of the pipeline 26.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.