US5664420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage two-phase turbine
Assignee: DOUGLAS ENERGY Co
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Filing: 1995-06-07
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Granted: 1997-09-09
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Expires: 2015-06-07
Abstract
Abstract A multistage two-phase turbine having multiple stages to receive fluid, each stage having an inlet and outlet comprising nozzles at the inlet to each stage to accelerate the fluid that consists of a mixture of gas and liquid, to form two-phase jets; a rotating separator structure to receive and separate the two-phase jets into gas streams and liquid stream in each stage; the turbine having a rotating output shaft, and there being structure to convert the kinetic energy of the liquid streams into shaft power; structure to remove the separated liquid from at least one stage and transfer it to nozzles at the next stage; structure to remove the separated liquid from the last stage and transfer it to primary outlet structure; and structure to remove the separated gas from at least one stage and transfer it to a secondary outlet structure.
Inventors
- 👤 Lance G. Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:23
CPC Classifications
F; F03; F03G; F03G7/00; F03G7/04; F01; F01K; F01K21/00; F01K21/005; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0217; B01D17/04; B01D17/044; B01D19/00; B01D19/0042; B01D19/0052; F01D; F01D1/00; F01D1/32; F01D15/00; F01D25/00; F01D25/32; F03G4/00; F03G4/074; F05; F05D; F05D2210/00; F05D2210/10; F05D2210/13; F05D2240/00; F05D2240/35; F05D2240/36
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
152 words
In a multistage two-phase turbine having one or more stages to receive fluid, each stage having an inlet and outlet, the combination comprising a) nozzles at the inlet to each stage to accelerate said fluid that consists of a mixture of gas and liquid, to form two-phase jets, b) a rotating separator structure to receive and separate the two-phase jets into gas streams and liquid streams in each stage, c) the turbine having a rotating output shaft, and there being means to convert the kinetic energy of the liquid streams into shaft power, d) means to remove the separated liquid from at least one stage and transfer it to nozzles at the next stage, e) means to remove the separated liquid from the last stage and transfer it to primary outlet structure, f) means to remove the separated gas from at least one stage and transfer it to a secondary outlet structure.
Claim 2
Dependent Claim
152 words
In a multistage two-phase turbine having one or more stages to receive fluid, each stage having an inlet and outlet, the combination comprising a) nozzles at the inlet to each stage to accelerate said fluid that consists of a mixture of gas and liquid, to form two-phase jets, b) a rotating separator structure to receive and separate the two-phase jets into gas streams and liquid streams in each stage, c) the turbine having a rotating output shaft, and there being means to convert the kinetic energy of the liquid streams into shaft power, d) means to remove the separated liquid from at least one stage and transfer it to nozzles at the next stage, e) means to remove the separated liquid from the last stage and transfer it to primary outlet structure, f) means to remove the separated gas from at least one stage and transfer it to a secondary outlet structure.
Claim 3
Dependent Claim
24 words
The combination of claim 1 including means in at least one stage to convert the kinetic energy of the gas stream to shaft power.
Claim 4
Dependent Claim
24 words
The combination of claim 1 including means in at least one stage to recover the kinetic energy of the separated liquid stream as pressure.
Claim 5
Dependent Claim
28 words
The combination of claim 1 including turbine axial flow blades associated with at least one rotating separator structure to convert the gas stream kinetic energy to shaft power.
Claim 6
Dependent Claim
20 words
The combination of claim 1 including means separating said stages, wherein the nozzles are an integral part of said means.
Claim 7
Dependent Claim
32 words
The combination of claim 1 including means to separate two components of the separated liquid stream from at least one stage, and to separately remove each said liquid component from the stage.
Claim 8
Dependent Claim
13 words
The combination of claim 1 including means supporting said turbine at sub-surface level.
Claim 9
Dependent Claim
27 words
The combination of claim 1 including means to remove the separated gas from at least one stage and transfer it to the nozzles at the next stage.
Claim 10
Dependent Claim
22 words
The combination of claim 6 including a diffuser positioned to remove the heavier of two liquid components from at least one stage.
Claim 11
Dependent Claim
24 words
The combination of claim 6 including a liquid stream receiving nozzle to remove the heavier of two liquid components from at least one stage.
Claim 12
Dependent Claim
27 words
The combination of claim 6 including structure to coalesce a dispersed liquid component into a continuous phase in the rotating separator structure of at least one stage.
Claim 13
Dependent Claim
164 words
The combination of claim 2 including a) a heat exchanger to transfer heat from an auxiliary hot gas stream into fluid that consists of liquid and/or a liquid and vapor mixture, said exchanger having an inlet, b) a means to conduct said fluid to the nozzles at least one of said stages, c) means to conduct the separated gas stream to a vapor turbine having inlet ports at different pressures, d) a condenser, e) means to conduct the vapor leaving the vapor turbine to said condenser, which produces condensate, f) a pump, g) means to conduct said condensate from the condenser to said pump, which operates to produce pressurized liquid, h) mixer means, i) means to conduct the pressurized liquid from the pump to said mixer means, j) means to also conduct said separated liquid stream to said mixer means, which operates to produce a mixed liquid stream, k) and means to conduct the mixed liquid stream to said inlet of the heat exchanger.
Claim 14
Dependent Claim
16 words
The combination of claim 2 wherein the turbine is installed within a gas or oil well.
Claim 15
Dependent Claim
24 words
The combination of claim 13 wherein separated water is internally pressurized and injected in part of the sub-surface formation different from the producing zone.
Claim 16
Dependent Claim
18 words
The combination of claim 2 wherein the turbine is installed under the surface of an ocean or sea.
Claim 17
Dependent Claim
25 words
The combination of claim 15 wherein the multistage two-phase turbine drives a gas compressor, which is used to increase the pressure of the separated gas.
Claim 18
Dependent Claim
14 words
The combination of claim 2 wherein the turbine receives flow from a geothermal well.
References Cited (Backward Citations)
US2531896A
Cited
US3093080A
Cited
US3358451A
Cited
US3749513A
Cited
US3879949A
Cited
US3838668A
Cited
US3972195A
Cited
US3936214A
Cited
US4087261A
Cited
US4141219A
Cited
US4227373A
Cited
US4258551A
Cited
US4441322A
Cited
US4267964A
Cited
US4298311A
Cited
US4339923A
Cited
US4336693A
Cited
US4391102A
Cited
JPS59122702A
Cited
US4511309A
Cited
US5190664A
Cited
US4665705A
Cited
US5385446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |