Combustible gas-in-oil detector
US4058373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1977 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Feb 18, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2841
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus is disclosed for extracting and analyzing gas from a body of liquid such as oil in an electrical transformer. The oil is continuously moved by thermosiphonic action through a conduit in which a gas permeation cell is mounted. Oil within the conduit is air cooled to create a temperature gradient relative to the body of liquid for establishing the thermosiphonic movement. The permeation cell comprises a semi-permeable membrane supported about an elongate porous tube mounted concentric within the conduit so that gas contained within the liquid permeates through the membrane and into a chamber within the cell. An inert carrier gas is injected into and out of the chamber for carrying the permeating gas to a gas detector-analyzer unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.