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Title: Liquid sampling system

Abstract

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the samplemore » bottle and control valves for the jet ejector and gas bleed. 5 figs.« less

Inventors:
Issue Date:
OSTI Identifier:
5699070
Application Number:
ON: DE85011673
Assignee:
Dept of Energy ERA-10-025969; EDB-85-079776
DOE Contract Number:  
AC07-79ID01675
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES; HAZARDOUS MATERIALS; SAMPLING; SAMPLERS; DESIGN; LIQUIDS; EQUIPMENT; FLUIDS; MATERIALS; 424000* - Engineering- Pollution Control Equipment- (1980-1989); 520200 - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Larson, L.L. Liquid sampling system. United States: N. p., 1984. Web.
Larson, L.L. Liquid sampling system. United States.
Larson, L.L. Mon . "Liquid sampling system". United States.
@article{osti_5699070,
title = {Liquid sampling system},
author = {Larson, L.L.},
abstractNote = {A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {9}
}