Patent US4739986A successfully refreshed from Google Patents.
US4842486A
Expired / Lapsed
US
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Method and apparatus for increasing the operating efficiency of a liquid-flow machine
Assignee: Siemens AG
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Filing: 1986-10-29
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Granted: 1989-06-27
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Expires: 2006-10-29
Abstract
Abstract An apparatus for improving the operating efficiency of a liquid-flow machine comprises a sensor for measuring the liquid throughput of the liquid-flow machine and a dosing device for controlling, in response to the measured throughput, the amount of a friction-reducing agent added to inflowing working fluid. The friction reducing agent preferably consists of marcomolecular bodies such as polyacrylamides or tensides. Inorganic fiber is also possible as an additive for reducing friction in the liquid-flow machine.
Inventors
- 👤 Hans R. Neubauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:21
CPC Classifications
F; F04; F04C; F04C19/00; F04C19/004; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
126 words
An apparatus for increasing the operating efficiency of a liquid-flow machine, said liquid-flow machine having an input connected to an inflow line for receiving a working fluid therefrom, said apparatus comprising: first means connectable to said inflow line for adding to the working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; second means operatively couplable to said machine for measuring throughput of said working fluid through said machine; and third means operatively connected to said first means and to said second means for controlling, in response to the throughput of said working fluid measured by said second means, the rate that said macromolecular bodies are added to said working fluid by said first means.
Claim 2
Independent Claim
126 words
An apparatus for increasing the operating efficiency of a liquid-flow machine, said liquid-flow machine having an input connected to an inflow line for receiving a working fluid therefrom, said apparatus comprising: first means connectable to said inflow line for adding to the working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; second means operatively couplable to said machine for measuring throughput of said working fluid through said machine; and third means operatively connected to said first means and to said second means for controlling, in response to the throughput of said working fluid measured by said second means, the rate that said macromolecular bodies are added to said working fluid by said first means.
Claim 3
Independent Claim
110 words
A method for increasing the operating efficiency of a liquid-flow machine having a means for driving a liquid ring in a housing to transport a gas, comprising the steps of: feeding a working fluid to an input of said machine; adding to the working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; operating said machine with said working fluid including said macromolecular bodies to transport said gas through a gas outlet; separating said working fluid from said gas downstream of said gas outlet; and recirculating substantially all of said working fluid, including said macromoleuclar bodies, to said input.
Claim 4
Independent Claim
110 words
A method for increasing the operating efficiency of a liquid-flow machine having a means for driving a liquid ring in a housing to transport a gas, comprising the steps of: feeding a working fluid to an input of said machine; adding to the working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; operating said machine with said working fluid including said macromolecular bodies to transport said gas through a gas outlet; separating said working fluid from said gas downstream of said gas outlet; and recirculating substantially all of said working fluid, including said macromoleuclar bodies, to said input.
Claim 5
Dependent Claim
13 words
The method defined in claim 2 wherein said macromolecular bodies are polyacrylamide bodies.
Claim 6
Dependent Claim
13 words
The method defined in claim 2 wherein said macromolecular bodies are tenside bodies.
Claim 7
Dependent Claim
133 words
A liquid-flow machine, comprising: a working unit, having a means for driving a liquid ring to transport a gas through a gas outlet, utilizing a working fluid, said working unit having an input and an output; first means including an inflow line connected to said input for delivering said working fluid to said working unit; second means connected to said inflow line for adding to said working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; third means for separating said working fluid from said gas downstream of said gas outlet; and fourth means connected to said input and to said third means for recirculating from said third means to said input substantially all of said working fluid, including said macromolecular bodies.
Claim 8
Dependent Claim
133 words
A liquid-flow machine, comprising: a working unit, having a means for driving a liquid ring to transport a gas through a gas outlet, utilizing a working fluid, said working unit having an input and an output; first means including an inflow line connected to said input for delivering said working fluid to said working unit; second means connected to said inflow line for adding to said working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; third means for separating said working fluid from said gas downstream of said gas outlet; and fourth means connected to said input and to said third means for recirculating from said third means to said input substantially all of said working fluid, including said macromolecular bodies.
Claim 9
Dependent Claim
13 words
The machine defined in claim 5 wherein said macromolecular bodies are polyacrylamide bodies.
Claim 10
Dependent Claim
13 words
The machine defined in claim 5 wherein said macromolecular bodies are tenside bodies.
Claim 11
Independent Claim
78 words
A method for increasing the operating efficiency of a liquid-flow machine, comprising the steps of: feeding a working fluid to an input of said machine; adding to the working fluid, at a point upstream of said input and at a rate proportional to a mass flow rate of said working fluid to said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; and operating said machine with said working fluid including said macromolecular bodies.
Claim 12
Independent Claim
78 words
A method for increasing the operating efficiency of a liquid-flow machine, comprising the steps of: feeding a working fluid to an input of said machine; adding to the working fluid, at a point upstream of said input and at a rate proportional to a mass flow rate of said working fluid to said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; and operating said machine with said working fluid including said macromolecular bodies.
Claim 13
Dependent Claim
19 words
The method defined in claim 1 wherein said macromolecular bodies are added to said working fluid in powder form.
Claim 14
Dependent Claim
20 words
The method defined in claim 1 wherein said macromolecular bodies are added to said working fluid in a liquid solution.
Claim 15
Dependent Claim
13 words
The method defined in claim 1 wherein said macromolecular bodies are tensile bodies.
Claim 16
Dependent Claim
22 words
The method defined in claim 1, further comprising the step of measuring said mass flow rate prior to said step of feeding.
Claim 17
Dependent Claim
19 words
The method defined in claim 12, wherein said step of measuring is performed continuously during operation of said machine.
Claim 18
Dependent Claim
12 words
The method defined in claim 1 wherein said macromolecular bodies are organic.
Claim 19
Dependent Claim
13 words
The method defined in claim 14 wherein said macromolecular bodies are polyacrylamide bodies.
Claim 20
Dependent Claim
135 words
A liquid-flow machine comprising: a working unit utilizing a working fluid, said working unit having an input and an output; first means including an inflow line connected to said input for delivery said working fluid to said working unit; second means connected to said inflow line for adding to said working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; third means operatively coupled to said working unit for measuring throughput of said working fluid through said machine; and fourth means operatively connected to said second means and to said third means for controlling, in response to the throughput of said working fluid measured by said third means, the rate that said macromolecular bodies are added to said working fluid by said second means.
Claim 21
Dependent Claim
135 words
A liquid-flow machine comprising: a working unit utilizing a working fluid, said working unit having an input and an output; first means including an inflow line connected to said input for delivery said working fluid to said working unit; second means connected to said inflow line for adding to said working fluid, at a point upstream of said input, a substantially controlled number of macromolecular bodies acting as friction reducing agents; third means operatively coupled to said working unit for measuring throughput of said working fluid through said machine; and fourth means operatively connected to said second means and to said third means for controlling, in response to the throughput of said working fluid measured by said third means, the rate that said macromolecular bodies are added to said working fluid by said second means.
Claim 22
Dependent Claim
27 words
The machine defined in claim 16, further comprising an outflow line connected to said output, said third means including a flow-rate sensor disposed in said outflow line.
Claim 23
Dependent Claim
44 words
The machine defined in claim 16 wherein said second means includes a reservoir for storing a supply of said macromolecular bodies and further includes a delivery line extending to said input line, said fourth means including a dosing device inserted in said delivery line.
Claim 24
Dependent Claim
19 words
The machine defined in claim 16 wherein said macromolecular bodies are added to said working fluid in powder form.
Claim 25
Dependent Claim
20 words
The machine defined in claim 16 wherein said macromolecular bodies are added to said working fluid in a liquid solution.
Claim 26
Dependent Claim
12 words
The machine defined in claim 16 wherein said macromolecular bodies are organic.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |