US4086308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized relief tank for steam
Assignee: Waagner Biro AG
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Filing: 1977-01-14
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Granted: 1978-04-25
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Expires: 1997-01-14
Abstract
Abstract A pressurizer relief or surge tank for connection with the pressurizer of a pressurized-water coolant system, has the usual tank partly filled with water and with a pressurized-gas cushion above the water. For more uniform relief action, the bottom of the tank contains a distribution pipe means rather closely fitting the inside contour of the tank and having a large number of distributing holes in its upper periphery, both transversely and circumferentially, a pipe having an upper end for connection with the coolant pressurizer, extending through the top of the tank and down to the pipe means in the tank's bottom, where the pipe connects with the pipe means by a system of radial connecting pipes.
Inventors
- 👤 Wolfgang Jurgens
- 👤 Jorg Nageler
- 👤 Josef Lippitsch
- 👤 Julius Holzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:25
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/004; G21C9/012; G21C1/00; G21C1/04; G21C1/06; G21C1/08; G21C1/09; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
191 words
A relief tank in combination with a pressurized-water reactor cooling system for receiving and condensing steam from a steam space of a pressurizer of said pressurized-water reactor cooling system, said tank being closed and pressure-resistant and having means for providing water therein up to a level forming a space above the water, the tank having means for filling said space with gas and having a top and a substantially cylindrical side wall and a bottom, a steam pipe extending pressure-tightly downwardly with said side wall and having a bottom end portion close to said bottom of said tank, said pipe having a top outside of the tank connected pressure-tightly with said steam space, said bottom end portion of said pipe connecting with a plurality of imperforate pipes pressure-tightly radiating from said bottom end portion and having outer ends, and a tubular annulus being in connection with said outer ends, said imperforate pipes radiating outward in such a manner that said imperforate pipes and tubular annulus substantially match the inside contour of said tank's bottom, said tubular annulus having an upper portion and uniformly distributed holes being formed in said upper portion.
Claim 2
Dependent Claim
191 words
A relief tank in combination with a pressurized-water reactor cooling system for receiving and condensing steam from a steam space of a pressurizer of said pressurized-water reactor cooling system, said tank being closed and pressure-resistant and having means for providing water therein up to a level forming a space above the water, the tank having means for filling said space with gas and having a top and a substantially cylindrical side wall and a bottom, a steam pipe extending pressure-tightly downwardly with said side wall and having a bottom end portion close to said bottom of said tank, said pipe having a top outside of the tank connected pressure-tightly with said steam space, said bottom end portion of said pipe connecting with a plurality of imperforate pipes pressure-tightly radiating from said bottom end portion and having outer ends, and a tubular annulus being in connection with said outer ends, said imperforate pipes radiating outward in such a manner that said imperforate pipes and tubular annulus substantially match the inside contour of said tank's bottom, said tubular annulus having an upper portion and uniformly distributed holes being formed in said upper portion.
Claim 3
Dependent Claim
36 words
The tank of claim 1 in which the steam pipe has a diameter large enough to normally contain a substantial volume of said water extending up substantially to said level of the water in the tank.
Claim 4
Dependent Claim
37 words
The tank of claim 2 in which the steam pipe has a bottom end below the pipes radiating from the steam pipe's said lower end portion, and an upwardly convex baffle pressure-tightly closes the just-named bottom end.
Claim 5
Dependent Claim
34 words
The tank of claim 3 in which the holes formed in said annulus cover an angular range of from about 110° to about 135° circumferentially with respect to the cross section of the annulus.
Claim 6
Dependent Claim
37 words
The tank of claim 1 in which the steam pipe has a bottom end below the pipes radiating from the steam pipe's said lower end portion, and an upwardly convex baffle pressure-tightly closes the just-named bottom end.
Claim 7
Dependent Claim
34 words
The tank of claim 1 in which the holes formed in said annulus cover an angular range of from about 110° to about 135° circumferentially with respect to the cross section of the annulus.
Claim 8
Dependent Claim
30 words
The tank of claim 1 in which said pipes radiating from the steam pipe's said lower end portion, are substantially uniformly interspaced in a circumferential direction of the steam pipe.
Claim 9
Dependent Claim
36 words
The tank of claim 7 in which the steam pipe has a diameter large enough to normally contain a substantial volume of said water extending up substantially to said level of the water in the tank.
Claim 10
Dependent Claim
37 words
The tank of claim 8 in which the steam pipe has a bottom end below the pipes radiating from the steam pipe's said lower end portion, and an upwardly convex baffle pressure-tightly closes the just-named bottom end.
Claim 11
Dependent Claim
34 words
The tank of claim 9 in which the holes formed in said annulus cover an angular range of from about 110° to about 135° circircumferentially with respect to the cross section of the annulus.
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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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |