Combined oxygen, nitrogen and hydrogen joint determination device and method based on thermal conductivity-infrared technique
US11971349B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 2023 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Oct 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4088
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a combined oxygen, nitrogen and hydrogen joint determination device and method based on thermal conductivity-infrared technique. In the device, a melting and extraction system comprises a carrier gas introduction pipeline, a chamber valve, an impulse furnace and a dust filter; an analytical gas transmission system comprises a flush valve, a bypass valve, a mass flowmeter and a first switching valve; a signal detection system comprises an infrared cell, an analysis purification reagent tube and a thermal conductivity cell; and a signal analysis system comprises a controller and a processor. The present invention realizes different joint determination modes by switching different gas paths, which can meet different determination requirements of different users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.