Micro sampling valve for high pressure and temperature samples

Details Micro sampling valve for high pressure and temperature samples Micro sampling valve for high pressure and temperature samples

1986-11-12

1988-02-23

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

7386484, G01N 3500

Patent

active

047262389

ABSTRACT:
The present invention provides an apparatus and method for trapping and injecting a fluid sample (liquid or gas) at high temperature and pressure without any sample loss. Here, a sample is flowed into an aperture in the valve body and then into a sample chamber. The sample chamber is mounted in a slidable stem and once the sample is in the sample chamber, the stem is moved to a position to seal off the sample. Once the sample is trapped, the valve is moved to a chromatograph (while maintaining the sample at pressure and temperature), flushed with a carrier gas, and the stem is moved to open the sample chamber to the gas. This flushes the sample and moves it to the chromatograph.

REFERENCES:
patent: 3100984 (1963-08-01), Martin
patent: 3583233 (1971-06-01), Jacoby et al.
patent: 3643511 (1972-02-01), Warncke et al.
patent: 4425810 (1984-01-01), Simon et al.
"Portable Chromatographic Sample Valve", Jayco Technical Products Company.
"A New System for Obtaining Vapor and Liquid Sample Analyses to Facilitate the Study of Multicomponent Mixtures at Elevated Pressure" by Yarborough et al; Pan American Petroleum Corp.; Tulsa, Okl., Chemical Eng. Progress Symposium Series.
"Vapor Liquid Equilibria Up to 100 MpA:A New Apparatus" by D. Legret et al., AICHE Journal (vol. 27, No. 2) Mar. 1981.

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