Process for measuring degradation of sulfur hexafluoride in high voltage systems
Abstract
This invention is a method of detecting the presence of toxic and corrosive by-products in high voltage systems produced by electrically induced degradation of SF/sub 6/ insulating gas in the presence of certain impurities. It is an improvement over previous methods because it is extremely sensitive, detecting by-products present in parts per billion concentrations, and because the device employed is of a simple design and takes advantage of the by-products natural affinity for fluoride ions. The method employs an ion-molecule reaction cell in which negative ions of the by-products are produced by fluorine attachment. These ions are admitted to a negative ion mass spectrometer and identified by their spectra. This spectrometry technique is an improvement over conventional techniques because the negative ion peaks are strong and not obscured by a major ion spectra of the SF/sub 6/ component as is the case in positive ion mass spectrometry.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 5455493
- Application Number:
- ON: DE86013808
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMICAL ANALYSIS; MASS SPECTROSCOPY; MASS SPECTROMETERS; SULFUR FLUORIDES; DECOMPOSITION; CHEMICAL REACTIONS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; MEASURING INSTRUMENTS; SPECTROMETERS; SPECTROSCOPY; SULFUR COMPOUNDS; 440300* - Miscellaneous Instruments- (-1989); 400104 - Spectral Procedures- (-1987)
Citation Formats
Sauers, I. Process for measuring degradation of sulfur hexafluoride in high voltage systems. United States: N. p., 1985.
Web.
Sauers, I. Process for measuring degradation of sulfur hexafluoride in high voltage systems. United States.
Sauers, I. Tue .
"Process for measuring degradation of sulfur hexafluoride in high voltage systems". United States.
@article{osti_5455493,
title = {Process for measuring degradation of sulfur hexafluoride in high voltage systems},
author = {Sauers, I},
abstractNote = {This invention is a method of detecting the presence of toxic and corrosive by-products in high voltage systems produced by electrically induced degradation of SF/sub 6/ insulating gas in the presence of certain impurities. It is an improvement over previous methods because it is extremely sensitive, detecting by-products present in parts per billion concentrations, and because the device employed is of a simple design and takes advantage of the by-products natural affinity for fluoride ions. The method employs an ion-molecule reaction cell in which negative ions of the by-products are produced by fluorine attachment. These ions are admitted to a negative ion mass spectrometer and identified by their spectra. This spectrometry technique is an improvement over conventional techniques because the negative ion peaks are strong and not obscured by a major ion spectra of the SF/sub 6/ component as is the case in positive ion mass spectrometry.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {4}
}