US3886972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core flow nozzle
Assignee: Shell USA Inc
•
Filing: 1973-12-06
•
Granted: 1975-06-03
•
Expires: 1993-12-06
Abstract
Abstract A nozzle having a variable area ratio mixing section for a pipeline transporting a viscous liquid as a core surrounded by an annulus of less viscous liquid.
Inventors
- 👤 Paul R Scott
- 👤 Victor J Chavez
- 👤 Vitold R Kruka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:48
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; F15D1/06; F17; F17D; F17D3/00; F17D3/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87611; Y10T137/87652; Y10T137/8766
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A nozzle for establishing core flow of a viscous fluid inside an annulus of a low viscosity fluid comprising a tubular body having two chambers, the first chamber having an inlet for a viscous fluid and the second chamber having an inlet for a low viscosity fluid, the second chamber having a conical taper at one end disposed away from the first chamber, a tubular member axially aligned within the two chambers, one end of the tubular member being located within the first chamber and being open to admit viscous fluid thereinto, the other end of said tubular member being disposed adjacent the conical taper of said second chamber and being axially movable within said chamber to control the velocity of low viscosity fluid, means for axially moving the tubular member within the two chambers, and a flow director within the second chamber to further align the tubular member therewithin, the flow director comprising flow directing louvers disposed at an angle to impart a swirling action to the low viscosity fluid.
Claim 2
Dependent Claim
171 words
A nozzle for establishing core flow of a viscous fluid inside an annulus of a low viscosity fluid comprising a tubular body having two chambers, the first chamber having an inlet for a viscous fluid and the second chamber having an inlet for a low viscosity fluid, the second chamber having a conical taper at one end disposed away from the first chamber, a tubular member axially aligned within the two chambers, one end of the tubular member being located within the first chamber and being open to admit viscous fluid thereinto, the other end of said tubular member being disposed adjacent the conical taper of said second chamber and being axially movable within said chamber to control the velocity of low viscosity fluid, means for axially moving the tubular member within the two chambers, and a flow director within the second chamber to further align the tubular member therewithin, the flow director comprising flow directing louvers disposed at an angle to impart a swirling action to the low viscosity fluid.
Claim 3
Dependent Claim
171 words
A nozzle for establishing core flow of a viscous fluid inside an annulus of a low viscosity fluid comprising a tubular body having two chambers, the first chamber having an inlet for a viscous fluid and the second chamber having an inlet for a low viscosity fluid, the second chamber having a conical taper at one end disposed away from the first chamber, a tubular member axially aligned within the two chambers, one end of the tubular member being located within the first chamber and being open to admit viscous fluid thereinto, the other end of said tubular member being disposed adjacent the conical taper of said second chamber and being axially movable within said chamber to control the velocity of low viscosity fluid, means for axially moving the tubular member within the two chambers, and a flow director within the second chamber to further align the tubular member therewithin, the flow director comprising flow directing louvers disposed at an angle to impart a swirling action to the low viscosity fluid.
Claim 4
Dependent Claim
171 words
A nozzle for establishing core flow of a viscous fluid inside an annulus of a low viscosity fluid comprising a tubular body having two chambers, the first chamber having an inlet for a viscous fluid and the second chamber having an inlet for a low viscosity fluid, the second chamber having a conical taper at one end disposed away from the first chamber, a tubular member axially aligned within the two chambers, one end of the tubular member being located within the first chamber and being open to admit viscous fluid thereinto, the other end of said tubular member being disposed adjacent the conical taper of said second chamber and being axially movable within said chamber to control the velocity of low viscosity fluid, means for axially moving the tubular member within the two chambers, and a flow director within the second chamber to further align the tubular member therewithin, the flow director comprising flow directing louvers disposed at an angle to impart a swirling action to the low viscosity fluid.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1 wherein the viscous fluid is admitted to the tubular member through a series of orifices therein.
Claim 6
Dependent Claim
37 words
The apparatus of claim 1 wherein the first chamber is separated from the second chamber by a diaphragm which functions to axially align the tubular member within the chambers and provides a seal between the two chambers.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1 wherein the viscous fluid inlet to the first chamber is offset from center to impart a centrifugal motion to the viscous fluid entering the first chamber.
Claim 8
Dependent Claim
34 words
The apparatus of claim 1 wherein the low viscosity fluid inlet is offset from the center of the second chamber to iMpart a swirling motion to the low viscosity fluid within the second chamber.
Claim 9
Dependent Claim
17 words
The apparatus of claim 1 wherein a lip of the tubular member is provided with converging taper.
Claim 10
Dependent Claim
31 words
The apparatus of claim 6 wherein inside taper of the lip of the tubular member varies from about 5* to about 30* with respect to the centerline of the tubular member.
Claim 11
Dependent Claim
24 words
The apparatus of claim 1 wherein the included angle of the conical section of the second chamber varies from about 5* to about 12*.
Claim 12
Dependent Claim
25 words
The apparatus of claim 1 wherein the included angle of the conical section of the second tubular body varies from about 7* to about 9*.
References Cited (Backward Citations)
US1118865A
Cited
US1838903A
Cited
US2682277A
Cited
US2794447A
Cited
US3154103A
Cited
US3357598A
Cited
US3643688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |