US4160908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate enhancement for generator condition monitors
Assignee: Westinghouse Electric Corp
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Filing: 1978-01-30
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Granted: 1979-07-10
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Expires: 1998-01-30
Abstract
Abstract In a hydrogen cooled dynamoelectric machine, an ion chamber detector monitors thermally produced particulates. The sensitivity of the ion chamber detector is improved by incorporating a particulate enhancement section upstream from the ion chamber detector. The particulate enhancement section has included therein a platinum surface over which the gaseous carrier flows increasing the number of submicron particulates entrained in the gaseous carrier.
Inventors
- 👤 D. Colin Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:07
CPC Classifications
H; H02; H02H; H02H5/00; H02K; H02K9/00; H02K9/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
156 words
An apparatus for detecting submicron particulates in a gaseous carrier, said apparatus comprising; a particulate enhancement section which includes a platinum surface for said gaseous carrier to flow over whereby the number of submicron particulates in said gaseous carrier increases; a mixing and gas ionizing section, operably joined to said particulate enhancing section to receive said gaseous carrier and enhanced particulates therefrom, said mixing and gas ionizing section including means defining a delay volume for receiving the particulate bearing gas; and which also includes a source of radiation to effect ionization of the gaseous carrier; and a detector section operably joined to said mixing and gas ionizing section to receive the ionized gas and entrained particulates therefrom, said detector section including spaced electrodes having an applied voltage and between which current flow occurs by means of the ionized gas to produce a variable signal the magnitude of which is proportional to the amount of entrained particulates.
Claim 2
Independent Claim
156 words
An apparatus for detecting submicron particulates in a gaseous carrier, said apparatus comprising; a particulate enhancement section which includes a platinum surface for said gaseous carrier to flow over whereby the number of submicron particulates in said gaseous carrier increases; a mixing and gas ionizing section, operably joined to said particulate enhancing section to receive said gaseous carrier and enhanced particulates therefrom, said mixing and gas ionizing section including means defining a delay volume for receiving the particulate bearing gas; and which also includes a source of radiation to effect ionization of the gaseous carrier; and a detector section operably joined to said mixing and gas ionizing section to receive the ionized gas and entrained particulates therefrom, said detector section including spaced electrodes having an applied voltage and between which current flow occurs by means of the ionized gas to produce a variable signal the magnitude of which is proportional to the amount of entrained particulates.
Claim 3
Dependent Claim
149 words
In combination, a dynamoelectric machine having portions coated with a material which particulates in response to heat; means for circulating a stream of cooling fluid over said machine portions to entrain said particulates; conduit means arranged to withdraw a test portion of said fluid during operation of said machine; and apparatus for sensing the presence of particulate material entrained in said exposed cooling fluid, said apparatus comprising; a chamber connected in fluid communication with said conduit means for receiving the flow of exposed cooling fluid, said chamber defining a flow path for the exposed cooling fluid and having a particulate enhancement section with a platinum surface for said exposed cooling fluid to flow over; means for mixing and ionizing said exposed and enhanced cooling fluid within said flow path; and said detector means arranged to monitor said ionized cooling fluid and provide in indication when said particulates are present.
Claim 4
Dependent Claim
149 words
In combination, a dynamoelectric machine having portions coated with a material which particulates in response to heat; means for circulating a stream of cooling fluid over said machine portions to entrain said particulates; conduit means arranged to withdraw a test portion of said fluid during operation of said machine; and apparatus for sensing the presence of particulate material entrained in said exposed cooling fluid, said apparatus comprising; a chamber connected in fluid communication with said conduit means for receiving the flow of exposed cooling fluid, said chamber defining a flow path for the exposed cooling fluid and having a particulate enhancement section with a platinum surface for said exposed cooling fluid to flow over; means for mixing and ionizing said exposed and enhanced cooling fluid within said flow path; and said detector means arranged to monitor said ionized cooling fluid and provide in indication when said particulates are present.
Claim 5
Dependent Claim
23 words
A combination in accordance with claim 2 wherein: said platinum surface of said enhancement section is provided by an open mesh platinum screen.
Claim 6
Dependent Claim
29 words
A combination in accordance with claim 2 wherein: said platinum surface of said enhancement section is provided by a lining of platinum on the inner surface of said chamber.
Claim 7
Dependent Claim
28 words
A combination in accordance with claim 2 wherein: said platinum surface of said enhancement section is provided by a layer of resin having exposed particles of platinum therein.
Claim 8
Dependent Claim
24 words
A combination in accordance with claim 2 wherein: said platinum surface of said enhancement section is provided by a member of a platinum alloy.
Claim 9
Dependent Claim
64 words
Apparatus for detecting thermoparticulates in a gaseous carrier comprising: means for producing and detecting ions in the gaseous carrier related to the concentration of thermoparticulates therein; and means for enhancing the number of thermoparticulates detected by said first means, said means for enhancing comprising an element having a platinum surface over which said gaseous carrier passes prior to the production and detection of ions.
Claim 10
Dependent Claim
64 words
Apparatus for detecting thermoparticulates in a gaseous carrier comprising: means for producing and detecting ions in the gaseous carrier related to the concentration of thermoparticulates therein; and means for enhancing the number of thermoparticulates detected by said first means, said means for enhancing comprising an element having a platinum surface over which said gaseous carrier passes prior to the production and detection of ions.
Claim 11
Dependent Claim
19 words
Apparatus in accordance with claim 7 wherein: said element having a platinum surface is an open mesh platinum screen.
Claim 12
Dependent Claim
35 words
Apparatus in accordance with claim 7 wherein: said element having a platinum surface is a platinum layer on a surface of a conduit carrying said gaseous carrier to said means for producing and detecting ions.
Claim 13
Dependent Claim
17 words
Apparatus in accordance with claim 7 wherein: said element having a platinum surface comprises a platinum powder.
Claim 14
Dependent Claim
18 words
Apparatus in accordance with claim 7 wherein: said element having a platinum surface comprises an alloy of platinum.
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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) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |