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US3885935A
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US
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Centrifugal apparatus for separating entrained liquids from a gaseous stream
Assignee: Heat/Fluid Engineering Corp
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Filing: 1973-06-19
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Granted: 1975-05-27
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Expires: 1993-06-19
Abstract
Abstract Helical motion is imparted to a moving gas stream by a centrifugal tuyere provided with inclined blades which overlap in axial projection so that there is no through open area. A nose cone deflector is located centrally of the tuyere upstream of the blades to deflect the central portion of the stream onto the blades. Liquids which collect on the deflector are prevented from flowing around the edge of the deflector and onto its downstream face for reentrainment by spacing the edge of the deflector from the central hub at the root ends of the blades and by avoiding liquid-supporting surfaces on the deflector which extend downstream from its edge. The gaseous stream leaves the apparatus through a gas outlet pipe which is downstream of and axially aligned with the centrifugal tuyere. Migration of liquid into the gas outlet pipe around its upstream edge is avoided by providing a barrier radiating outwardly from the upstream end of the gas outlet pipe. A liquid sump promotes removal of the liquid and permits gravitational separation of the liquid and vapor phases.
Inventors
- 👤 Dale E Nutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
B; B04; B04C; B04C3/00; B01; B01D; B01D45/00; B01D45/12; B04C2003/006
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
270 words
In a centrifugal separator having a central longitudinal axis and a tuyere provided with a plurality of radiating blades extending from the central axis; each of said blades having a leading edge, a trailing edge, a root end, a tip end, and upstream and downstream faces which are inclined with respect to the central longitudinal axis and to planes lying perpendicular thereto, whereby a gaseous stream passing through the separator is given a helical motion to throw entrained particles of liquid radially outwardly; the improvement which comprises a deflector, means locating said deflector forwardly of the upstream faces of the blades in the path of the gaseous stream, said deflector having an upstream face which terminates at its periphery in an edge positioned directly upstream of the upstream faces of the blades tO release liquid from the deflector onto the upstream faces of the blades, said deflector being devoid of any liquid supporting surface extending downstream from said deflector edge, said deflector having a downstream face which is located upstream of said blades, each of said blades having its root end located entirely downstream of the deflector and radially inward of the deflector edge, each of said blades having its leading edge extending radially from a point located downstream of the deflector and radially inward of the deflector edge to a point which is radially beyond the deflector and is at the outer periphery of the tuyere, said downstream face adjacent to said deflector edge being spaced from the root ends of the blades to prevent the flow of liquid along and adjacent to the root ends for consequent reentrainment.
Claim 2
Dependent Claim
270 words
In a centrifugal separator having a central longitudinal axis and a tuyere provided with a plurality of radiating blades extending from the central axis; each of said blades having a leading edge, a trailing edge, a root end, a tip end, and upstream and downstream faces which are inclined with respect to the central longitudinal axis and to planes lying perpendicular thereto, whereby a gaseous stream passing through the separator is given a helical motion to throw entrained particles of liquid radially outwardly; the improvement which comprises a deflector, means locating said deflector forwardly of the upstream faces of the blades in the path of the gaseous stream, said deflector having an upstream face which terminates at its periphery in an edge positioned directly upstream of the upstream faces of the blades tO release liquid from the deflector onto the upstream faces of the blades, said deflector being devoid of any liquid supporting surface extending downstream from said deflector edge, said deflector having a downstream face which is located upstream of said blades, each of said blades having its root end located entirely downstream of the deflector and radially inward of the deflector edge, each of said blades having its leading edge extending radially from a point located downstream of the deflector and radially inward of the deflector edge to a point which is radially beyond the deflector and is at the outer periphery of the tuyere, said downstream face adjacent to said deflector edge being spaced from the root ends of the blades to prevent the flow of liquid along and adjacent to the root ends for consequent reentrainment.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 wherein each of the blades is provided at its trailing edge with a trough for preventing the release and reentrainment of liquid from the downstream edge of the blade.
Claim 4
Dependent Claim
111 words
The apparatus of claim 1 having a liquid collection chamber freely in communication with the separator chamber and being located radially outside the gas outlet pipe, and liquid outlet means in the liquid collection chamber for removal of liquid from the liquid collection chamber, a gas outlet pipe in axial alignment with the tuyere, a barrier on the external wall of the gas outlet pipe to prevent liquid on the external wall from flowing in an upstream direction and into the gas outlet pipe, said barrier having a downstream face which lies at an angle no greater than about 90* with respect to the central longitudinal axis downstream of the barrier.
Claim 5
Dependent Claim
34 words
The apparatus of claim 3 wherein each of the blades is provided at its trailing edge with a trough for preventing the release and reentrainment of liquid from the downstream edge of the blade.
Claim 6
Dependent Claim
38 words
The apparatus of claim 1 wherein the upstream faces of the blades are disposed at least about 45* with respect to the central longitudinal axis to reduce the tendency for liquid to skip off the blades for reentrainment.
Claim 7
Dependent Claim
111 words
The apparatus of claim 5 having a liquid collection chamber freely in communication with the separator chamber and being located radially outside the gas outlet pipe, and liquid outlet means in the liquid collection chamber for removal of liquid from the liquid collection chamber, a gas outlet pipe in axial alignment with the tuyere, a barrier on the external wall of the gas outlet pipe to prevent liquid on the external wall from flowing in an upstream direction and into the gas outlet pipe, said barrier having a downstream face which lies at an angle no greater than about 90* with respect to the central longitudinal axis downstream of the barrier.
Claim 8
Dependent Claim
34 words
The apparatus of claim 6 wherein each of the blades is provided at its trailing edge with a trough for preventing the release and reentrainment of liquid from the downstream edge of the blade.
Claim 9
Dependent Claim
41 words
The apparatus of claim 1 wherein the downstream face of the deflector adjacent to said edge is inclined in an upstream direction from said edge to deter migration of liquid around the edge and onto the downstream face of the deflector.
Claim 10
Dependent Claim
111 words
The apparatus of claim 8 having a liquid collection chamber freely in communication with the separator chamber and being located radially outside the gas outlet pipe, and liquid outlet means in the liquid collection chamber for removal of liquid from the liquid collection chamber, a gas outlet pipe in axial alignment with the tuyere, a barrier on the external wall of the gas outlet pipe to prevent liquid on the external wall from flowing in a upstream direction and into the gas outlet pipe, said barrier having a downstream face which lies at an angle no greater than about 90* with respect to the central longitudinal axis downstream of the barrier.
Claim 11
Dependent Claim
34 words
The apparatus of claim 8 wherein each of the blades is provided at its trailing edge with a trough foR preventing the release and reentrainment of liquid from the downstream edge of the blade.
Claim 12
Dependent Claim
38 words
The apparatus of claim 8 wherein the upstream faces of the blades are disposed at least about 45* with respect to the central longitudinal axis to reduce the tendency for liquid to skip off the blades for reentrainment.
Claim 13
Dependent Claim
111 words
The apparatus of claim 11 having a liquid collection chamber freely in communication with the separator chamber and being located radially outside the gas outlet pipe, and liquid outlet means in the liquid collection chamber for removal of liquid from the liquid collection chamber, a gas outlet pipe in axial alignment with the tuyere, a barrier on the external wall of the gas outlet pipe to prevent liquid on the external wall from flowing in an upstream direction and into the gas outlet pipe, said barrier having a downstream face which lies at an angle no greater than about 90* with respect to the central longitudinal axis downstream of the barrier.
Claim 14
Dependent Claim
34 words
The apparatus of claim 12 wherein each of the blades is provided at its trailing edge with a trough for preventing the release and reentrainment of liquid from the downstream edge of the blade.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |