Patent US3937183A successfully refreshed from Google Patents.
US3937183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator
Assignee: Kraftwerk Union AG
•
Filing: 1974-11-19
•
Granted: 1976-02-10
•
Expires: 1994-11-19
Abstract
Abstract A steam generator having a casing enclosing a U-tube bundle-type heat exchanger, forming hot and cold legs, and above which a group of water separators are positioned to extend above both of these legs, is provided with a means for diverting a portion of the steam-water mixture rising from the hot leg, to the water separators above the cold leg.
Inventors
- 👤 Raimund Reisacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:33
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/26; F22B37/268
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
198 words
A steam generator comprising a vertical casing having a feed-water inlet and an upper portion forming a steam dome having a steam outlet, said casing forming a portion below said dome, having a tube plate forming a closure and a U-tube bundle having upwardly extending hot and cold legs mounted in said tube plate and a primary header below said tube plate and having primary fluid hot and cold nozzles and a partition for directing primary fluid from said hot nozzle through said hot leg and from said cold leg through said cold nozzle, said tube bundle being circumferentially enclosed by a shroud on top of which a group of water separators extends horizontally above at least substantially the horizontal extent of said tube bundle including both of said legs, said separators being under said steam dome, receiving steam-water mixtures rising from both of said legs inside of said shroud, the shroud and the inside of said casing forming a feed-water descent space to which said separators discharge separated water, said casing containing means for diverting part of the steam-water mixture rising from said hot leg to at least a portion of said separators above said cold leg.
Claim 2
Dependent Claim
198 words
A steam generator comprising a vertical casing having a feed-water inlet and an upper portion forming a steam dome having a steam outlet, said casing forming a portion below said dome, having a tube plate forming a closure and a U-tube bundle having upwardly extending hot and cold legs mounted in said tube plate and a primary header below said tube plate and having primary fluid hot and cold nozzles and a partition for directing primary fluid from said hot nozzle through said hot leg and from said cold leg through said cold nozzle, said tube bundle being circumferentially enclosed by a shroud on top of which a group of water separators extends horizontally above at least substantially the horizontal extent of said tube bundle including both of said legs, said separators being under said steam dome, receiving steam-water mixtures rising from both of said legs inside of said shroud, the shroud and the inside of said casing forming a feed-water descent space to which said separators discharge separated water, said casing containing means for diverting part of the steam-water mixture rising from said hot leg to at least a portion of said separators above said cold leg.
Claim 3
Dependent Claim
33 words
The steam generator of claim 1 in which said means comprises a baffle below said separators and above said hot leg and inclined towards said portion of said separators above said cold leg.
Claim 4
Dependent Claim
37 words
The steam generator of claim 2 in which said hot and cold legs define a vertically and transversely extending flat space between the legs, and said baffle extends in a horizontal direction substantially parallel to said space.
Claim 5
Dependent Claim
35 words
The steam generator of claim 3 in which said baffle is hinged on a line substantially parallel to said space and the angularity of said baffle is adjustable by the baffle swinging on said line.
Claim 6
Dependent Claim
25 words
The steam generator of claim 4 in which said baffle is hinged on hinge means extending transversely across said shroud and positioned by the shroud.
Claim 7
Dependent Claim
16 words
The steam generator of claim 5 in which said baffle has means for adjusting its angularity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |