Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-001/00
출원번호
UP-0423217
(2006-06-09)
등록번호
US-7658094
(2010-04-02)
발명자
/ 주소
Brumboiu, Aurel D.
Norquay, Darrell A.
William, Bruce
출원인 / 주소
DataLog Aquisition Corp.
대리인 / 주소
Goodwin, Sean W
인용정보
피인용 횟수 :
4인용 특허 :
17
초록▼
A sheet form membrane probe, an apparatus and method, wherein the probe includes a probe body, a sheet-form membrane secured to the probe body and including an open surface exposed to the exterior of the probe; a channel formed between the probe body and the membrane through which a collector fluid
A sheet form membrane probe, an apparatus and method, wherein the probe includes a probe body, a sheet-form membrane secured to the probe body and including an open surface exposed to the exterior of the probe; a channel formed between the probe body and the membrane through which a collector fluid can flow; an inlet port opening to the channel to conduct collector fluid to the channel; and an outlet port spaced from the inlet port such that the collector fluid passes through the channel from the inlet port to the outlet port in a flow direction substantially parallel to the membrane. The channel may be formed to provide broad surface contact of the collector fluid with the membrane. The membrane open surface may include an active area open to a sample fluid and open on an opposite side for contact with collector fluid flow in the channel. The active area may be large relative to the total membrane area to provide for an effective use of the expensive membrane material. Another probe includes a fitting end and a membrane stem and secures membranes to at least two sides of the membrane stem such that permeation can occur along a channel passing from the fitting end along the membrane stem and returning to the fitting end from the membrane stem.
대표청구항▼
The invention claimed is: 1. A probe for analyzing fluid concentrations in a fluid to be analyzed, the probe comprising: a probe body including a fitting end and a stem, the stem including an outboard end opposite the fitting end, a first side and a second side; a channel formed along the stem on i
The invention claimed is: 1. A probe for analyzing fluid concentrations in a fluid to be analyzed, the probe comprising: a probe body including a fitting end and a stem, the stem including an outboard end opposite the fitting end, a first side and a second side; a channel formed along the stem on its first side and second side, the channel extending along the first side from an inlet adjacent the fitting end toward the stem outboard end and passing to the second side to extend from the outboard end to an outlet adjacent the fitting end and the channel being formed on the stem surface at along a portion of its length; and a sheet-form membrane secured to the stem in a sealing configuration over the channel such that a collector fluid can pass through the channel from the inlet to the outlet, the membrane including an active surface exposed to the exterior of the probe and the collector fluid passing through the channel, wherein the channel includes a first open side, a second open side and a portion passing through the body to connect them and the sheet-form membrane is formed of a first membrane secured to the stem over the first open side and a second membrane secured to the stem over the second open side. 2. The probe as described in claim 1 wherein the probe body has a maximum outer dimension less than the maximum outer dimension of the fitting end. 3. The probe as described in claim 1 wherein the first membrane and the second membrane each are elongate having side edges and the first and second membranes are each clamped against the probe body by a device including a frame secured by a plurality of fasteners spaced along each of the side edges. 4. A method of analyzing a fluid for the existence therein of a component of interest, the method comprising: using a probe as described in claim 1; inserting the probe to the fluid so that at least the active area of the membrane is in contact with the fluid; providing a collector fluid to the probe, the collector fluid passing through and exiting the probe; and passing the exiting collector fluid on for analysis. 5. The method of claim 4 wherein the collector fluid is passed on to an analysis circuit. 6. The method of claim 4 wherein the collector fluid is passed on to a unit capable of determining the presence of the component of interest. 7. The method of claim 4 wherein the collector fluid is continuously or intermittently provided to the probe. 8. The method of claim 4 wherein the collector fluid is continuously or intermittently passed on for analysis. 9. The method of claim 4 wherein the exiting collector fluid is dried. 10. The method as described in claim 4 where the fluid to be analyzed is a drilling fluid including but not limited to water-based mud, diesel invert mud, synthetic oil-based mud, or fluids used in underbalanced drilling such as nitrogen, air, or a mixture of the above mentioned drilling fluids. 11. The method as described in claim 4 in an application for mudlogging and the component of interest includes one or more of hydrocarbons, vapors, permanent gases or volatiles. 12. The method as described in claim 4 wherein the collector fluid flow rate is adjusted to adjust the concentration of the component of interest in the collector fluid. 13. An apparatus for analyzing a fluid for a component of interest, the apparatus comprising: a probe as described in claim 1; a mounting configuration to install the probe in the process fluid to be analyzed; a main unit including any of an analyzer, a flow conditioning/measuring device for a collector fluid, or a power supply; and connections between the main unit and the probe including an incoming flow line from the main unit to the probe and an outcoming flow line from the probe to the main unit. 14. The apparatus as described in claim 13 where the collector fluid is air. 15. The apparatus as in claim 13 further comprising a membrane coaxial tubing in the outcoming flow line such that the outcoming flow from the probe to the main unit is dried during transport therethrough. 16. The apparatus as in claim 15 wherein the coaxial tubing accommodates the collector flow in its inner core and a flow of drying gas through an outer annulus. 17. The apparatus as in claim 13 further comprising flow control means and wherein a sample concentration range brought to the main unit by the collector fluid is switched using selected flow values for the collector fluid. 18. The apparatus as in claim 13 wherein the analyzer includes a catalytic combustible detector, a spectrophotometer, a chromatograph or a thermal conductive detector. 19. A method of analyzing a sample fluid for the existence of a component of interest, the method comprising: providing a probe as described in claim 1 wherein the membrane is permeable to the component of interest; providing an analyzer, the analyzer being effective at a selected concentration range for the component of interest; inserting the probe to the sample fluid so that at least the active area of the membrane is in contact with the sample fluid; providing a collector fluid to the probe, the collector fluid passing through and exiting the probe; passing the exiting collector fluid to the analyzer for analysis for determination of the measured concentration of the component of interest; and adjusting the collector fluid flow rate to bring the measured concentration into the selected concentration range in which the analyzer is effective. 20. The method of claim 19 wherein the analyzer includes a catalytic combustible detector and the flow rate is adjusted to maintain the measured concentration below an upper limit of the selected concentration range in which the detector is effective. 21. The method of claim 19 wherein the exiting collector fluid is dried by passing through a membrane coaxial tubing.
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이 특허에 인용된 특허 (17)
Cooks Robert G. (West Lafayette IN) Bauer Scott J. (West Lafayette IN), Analyte separation process and apparatus.
Bender William J. H. (Baton Rouge LA) DeLeo Gary D. (Donaldsonville LA) Westlake ; III Theodore N. (Baton Rouge LA) Daigle Emanuel L. (Gonzales LA) Ribes Carolyn W. (Baton Rouge LA), High flow membrane probe.
Westlake ; III Theodore N. (Baton Rouge LA) Wolcott Duane K. (Baton Rouge LA) DeLeo Gary D. (Donaldsonville LA), Membrane-based fluid separations apparatus.
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