Patent US4624111A successfully refreshed from Google Patents.
US4624111A
Expired / Lapsed
US
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Preseparator for a pipe carrying a two-phase mixture
Assignee: BBC BROWN BOVERI and Co Ltd
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Filing: 1985-04-08
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Granted: 1986-11-25
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Expires: 2005-04-08
Abstract
Abstract A preseparator for use in a saturated-steam turbine installation comprising an outer pipe, a first internal pipe positioned within the outer pipe and which includes a constriction, an annular gap of isokinetic size between the beginning of the internal pipe and the outer pipe, a second internal pipe positioned between the first internal pipe and the outer pipe so as to define chambers, and ports communicated with the chambers.
Inventors
- 👤 Helmut V. Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:50
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A preseparator for separating water from steam comprising: an outer pipe and a first internal pipe positioned within the outer pipe, the first internal pipe having a constriction, an upstream end of the first internal pipe being spaced from the outer pipe so as to form an annular gap adapted to admit flow with an absence of a substantial variation of velocity, adjacent portions of the outer pipe and the first internal pipe forming an inter-space therebetween; at least one additional internal pipe positioned downstream of the annular gap and between the first internal pipe and the outer pipe so as to divide the inter-space into chambers; and first and second ports provided in said outer pipe and communicating with at least one of said chambers.
Claim 2
Dependent Claim
126 words
A preseparator for separating water from steam comprising: an outer pipe and a first internal pipe positioned within the outer pipe, the first internal pipe having a constriction, an upstream end of the first internal pipe being spaced from the outer pipe so as to form an annular gap adapted to admit flow with an absence of a substantial variation of velocity, adjacent portions of the outer pipe and the first internal pipe forming an inter-space therebetween; at least one additional internal pipe positioned downstream of the annular gap and between the first internal pipe and the outer pipe so as to divide the inter-space into chambers; and first and second ports provided in said outer pipe and communicating with at least one of said chambers.
Claim 3
Dependent Claim
18 words
The preseparator according to claim 1, wherein the first internal pipe has the form of a Laval nozzle.
References Cited (Backward Citations)
FR961953A
Cited
GB393552A
Cited
US3603062A
Cited
DE1912805A1
Cited
US3884660A
Cited
FR2357818A1
Cited
US4355515A
Cited
EP0096916A1
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US4527396A
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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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |