US3729987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring slurry concentration and velocity distribution in a slurry pipeline
Assignee: Shell USA Inc
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Filing: 1971-09-17
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Granted: 1973-05-01
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Expires: 1991-09-17
Abstract
Abstract A method and apparatus for measuring the slurry concentration and velocity distribution in a pipeline wherein a first probe is used to determine the velocity at a predetermined position in the pipeline and a sample probe is then moved to the position and sampling rate adjusted until the velocity response to the two probes are equal. The local value of the velocity is obtained by dividing volume per unit of time of the sample by the crosssectional area of the probe while the slurry concentration and particle size distribution are obtained by analysis.
Inventors
- 👤 J Chao
- 👤 M Wicks
- 👤 T Pounds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/30; E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/907; G; G01; G01N; G01N15/00; G01N15/06; G01N9/00; G01N9/26; G01P; G01P5/00; G01P5/10; G01P5/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
A method for determining the velocity profile and solids concentration profile in a slurry pipeline comprising: measuring the velocity at a first position in the pipeline; sampling by means of a sample probe the slurry in said pipeline at said first position, while adjusting the sampling rate by discharging the sample from the sample probe onto a probe that is substantially identical to the probe used to measure the velocity in the pipeline so that the velocity in the sample probe equals the measured velocity at said first position; collecting a known volume of sample while measuring the time required to collect the known volume of sample; and determining the velocity of slurry flow at said first position from said measured volume and the cross-sectional area of the sample probe.
Claim 2
Independent Claim
130 words
A method for determining the velocity profile and solids concentration profile in a slurry pipeline comprising: measuring the velocity at a first position in the pipeline; sampling by means of a sample probe the slurry in said pipeline at said first position, while adjusting the sampling rate by discharging the sample from the sample probe onto a probe that is substantially identical to the probe used to measure the velocity in the pipeline so that the velocity in the sample probe equals the measured velocity at said first position; collecting a known volume of sample while measuring the time required to collect the known volume of sample; and determining the velocity of slurry flow at said first position from said measured volume and the cross-sectional area of the sample probe.
Claim 3
Independent Claim
184 words
An apparatus for measuring the velocity profile and slurry concentration in a slurry pipeline, said apparatus comprising: a first velocity measuring probe, said velocity measuring probe being disposed to be extended into the pipeline and retracted to a position beyond the wall of the pipeline; a first measuring circuit, said velocity probe being coupled to said first measuring circuit; a sampling probe, said sampling probe being disposed to be extended into the pipeline and retracted to a position beyond the wall of the pipeline, a testing vessel, said sampling probe communicating with said testing vessel; a second velocity measuring probe, said second velocity measuring probe being mounted in said testing vessel and disposed so that said sample probe discharges onto said second velocity measuring probe; a second measuring circuit, said second velocity probe being coupled to said second measuring circuit; flow control means disposed to control the flow through said sampling probe whereby the signal from said second measuring circuit may be varied to equal the signal from the first measuring circuit; and a collecting vessel, said sampling probe communicating with said collecting vessel.
Claim 4
Independent Claim
184 words
An apparatus for measuring the velocity profile and slurry concentration in a slurry pipeline, said apparatus comprising: a first velocity measuring probe, said velocity measuring probe being disposed to be extended into the pipeline and retracted to a position beyond the wall of the pipeline; a first measuring circuit, said velocity probe being coupled to said first measuring circuit; a sampling probe, said sampling probe being disposed to be extended into the pipeline and retracted to a position beyond the wall of the pipeline, a testing vessel, said sampling probe communicating with said testing vessel; a second velocity measuring probe, said second velocity measuring probe being mounted in said testing vessel and disposed so that said sample probe discharges onto said second velocity measuring probe; a second measuring circuit, said second velocity probe being coupled to said second measuring circuit; flow control means disposed to control the flow through said sampling probe whereby the signal from said second measuring circuit may be varied to equal the signal from the first measuring circuit; and a collecting vessel, said sampling probe communicating with said collecting vessel.
Claim 5
Dependent Claim
14 words
The apparatus of claim 1 wherein said first and second velocity probes are thermistors.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1 wherein said sampling probe communicates with said testing and said collecting vessels through a three-way valve.
Claim 7
Dependent Claim
22 words
The apparatus of claim 1 wherein said vElocity probe and said sampling probe are mounted on diametrically opposite sides of said pipeline.
Claim 8
Dependent Claim
23 words
The apparatus of claim 1 wherein said flow control means comprises means for controlling the pressure in said testing and said collecting vessels.
References Cited (Backward Citations)
SU211147A1
Cited
US3543565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |