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US3923008A
Expired / Lapsed
US
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Steam generators
Assignee: Waagner Biro AG
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Filing: 1973-11-15
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Granted: 1975-12-02
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Expires: 1993-11-15
Abstract
Abstract A steam generator which is particularly adapted to be used in nuclear power plants. A casing is provided with an inlet and outlet to receive and discharge a primary heating fluid from which heat is to be extracted. A pair of tube plates extend across the interior of the casing at the region of the inlet and outlet thereof, and a plurality of tubes extend along the interior of the casing and are connected in parallel between the tube plates with all of the tubes having open ends communicating with the inlet and outlet of the casing so that the primary heating fluid will flow through the interior of the tubes while a fluid in the casing at the exterior of the tubes will extract heat from the primary fluid. The casing has between the tubes at the region of the inlet a superheating chamber and at the region of the outlet a preheating chamber and between the latter chambers an evaporating chamber, the casing receiving water through an inlet at the preheating chamber and discharging superheated steam through an outlet at the superheating chamber. A separator communicates with the evaporating chamber to receive a mixture of steam and water therefrom for separating the steam from the water and for delivering the separated steam to the superheating chamber.
Inventors
- 👤 Georg Beckmann
- 👤 Paul Viktor Gilli
- 👤 Kurt Fritz
- 👤 Josef Lippitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:05
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/023
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
364 words
In a steam generator, particularly adapted for nuclear power plants, casing means having an inlet end region and an outlet end region respectively having an inlet and outlet for respectively receiving and discharging a primary heating fluid from which heat is to be extracted, said end regions being separate and spaced from each other, inlet and outlet tube plates extending across the interior of said casing means in said inlet and outlet end regions thereof, respectively, and a plurality of tubes extending along the interior of said casing means, said tubes being connected in parallel between said tube plates and all of said tubes having open ends communicating with said inlet and outlet of said casing means so that the primary heating fluid flows along the interior of said tubes from said inlet end region to said outlet end region of said casing means while a fluid at the exterior of said tubes in said casing means extracts heat from the primary fluid, said casing means having between said tube plates in said inlet end region a superheating chamber one end of which is formed only by said inlet tube plate and in said outlet end region a preheating chamber one end of which is formed only by said outlet tube plate and chambers an evaporating chamber in series with said preheating chamber, said preheating chamber being spaced from and out of communication with said inlet end region and said inlet tube plate as well as the portions of said tubes connected to said inlet tube plate, and said casing means having between said tube plates at said outlet end region an inlet means for introducing water to be received in said preheating chamber and at said inlet end region an outlet means for discharging superheated steam from said superheating chamber, and separator means communicating with said evaporating chamber for receiving a mixture of steam and water therefrom and for separating the steam from the water, said separator means having a steam discharge communicating directly with said superheating chamber for delivering to the latter the steam separated from the water to be superheated only while flowing in said superheating chamber to said outlet means.
Claim 2
Dependent Claim
364 words
In a steam generator, particularly adapted for nuclear power plants, casing means having an inlet end region and an outlet end region respectively having an inlet and outlet for respectively receiving and discharging a primary heating fluid from which heat is to be extracted, said end regions being separate and spaced from each other, inlet and outlet tube plates extending across the interior of said casing means in said inlet and outlet end regions thereof, respectively, and a plurality of tubes extending along the interior of said casing means, said tubes being connected in parallel between said tube plates and all of said tubes having open ends communicating with said inlet and outlet of said casing means so that the primary heating fluid flows along the interior of said tubes from said inlet end region to said outlet end region of said casing means while a fluid at the exterior of said tubes in said casing means extracts heat from the primary fluid, said casing means having between said tube plates in said inlet end region a superheating chamber one end of which is formed only by said inlet tube plate and in said outlet end region a preheating chamber one end of which is formed only by said outlet tube plate and chambers an evaporating chamber in series with said preheating chamber, said preheating chamber being spaced from and out of communication with said inlet end region and said inlet tube plate as well as the portions of said tubes connected to said inlet tube plate, and said casing means having between said tube plates at said outlet end region an inlet means for introducing water to be received in said preheating chamber and at said inlet end region an outlet means for discharging superheated steam from said superheating chamber, and separator means communicating with said evaporating chamber for receiving a mixture of steam and water therefrom and for separating the steam from the water, said separator means having a steam discharge communicating directly with said superheating chamber for delivering to the latter the steam separated from the water to be superheated only while flowing in said superheating chamber to said outlet means.
Claim 3
Dependent Claim
15 words
The combination of claim 1 and wherein said tubes are of a substantially U-shaped configuration.
Claim 4
Dependent Claim
54 words
The combination of claim 1 and wherein a baffle means is situated in said preheating chamber adjacent said inlet means for directing water against the tube plate at the outlet region of said casinG means for washing said tube plate substantially over the entire area thereof which is directed inwardly toward said preheating chamber.
Claim 5
Dependent Claim
48 words
The combination of claim 1 and wherein said evaporating chamber includes a steam space and a water space, respectively adjacent said superheating chamber and said preheating chamber, and said separator means communicating both with said steam space and said water space for respectively receiving steam and water therefrom.
Claim 6
Dependent Claim
41 words
The combination of claim 4 and wherein said separator means is a cyclone situated at the exterior of said casing means and including conduits which communicate with said water space and steam space for receiving the water and steam therefrom, respectively.
Claim 7
Dependent Claim
140 words
The combination of claim 1 and wherein said separator means communicates also with said evaporating chamber of said casing means for returning to said 95 evaporating chamber water separated from the steam and water received by said separator means, and ejector means communicating with said preheating chamber for receiving the water delivered thereto by said inlet means and for delivering the latter water in the form of a jet through a part of said separator means which communicates with said evaporating chamber to return water thereto separated from the steam and water mixture, so that said ejector means will utilize the water which is preheated in said preheating chamber to suck water separated from the steam at said separator means and deliver the latter water together with the water received from said preheating chamber under pressure to said evaporating chamber.
Claim 8
Dependent Claim
128 words
The combination of claim 1 and wherein a nozzle means is situated between said preheating chamber and evaporating chamber for directing the water received in said preheating chamber from said inlet means in the form of a jet from said preheating chamber into said evaporating chamber, and said separator means communicating with said evaporating chamber at the region of said preheating chamber for returning to said evaporating chamber adjacent said preheating chamber water separated from the mixture of water and steam, so that the latter water which is returned from said separator means to said evaporating chamber will be acted upon by the jet of water issuing from said preheating chamber to be directed with the water from the preheating chamber along the interior of said evaporating chamber.
Claim 9
Dependent Claim
80 words
The combination of claim 1 and wherein said casing means and tubes therein have a substantially U-shaped configuration provided with an intermediate curved portion and on opposite sides thereof elongated portions of different lengths, the shorter of said elongated portions of said tubes in casing means forming said preheating chamber with said outlet of said casing means being situated at the shorter portion thereof while the longer portion of said tubes and casing means forms the evaporating and superheating chambers.
Claim 10
Dependent Claim
128 words
The combination of claim 1 and wherein said tubes have a U-shaped configuration and have on opposite sides of an intermediate curved portion elongated portions both of which form parts of said evaporating chamber, and the parts of said tubes which form said parts of said evaporating chamber being connected in series for directing the primary heating fluid sequentially along the interior of said tubes first through one of said parts of said evaporating chamber and then through the other of said parts of said evaporating chamber, while the interior of said casing means which surrounds said tubes at said parts of said evaporating chamber defines spaces in which the fluid at the exterior of the tubes is treated in parallel at said parts of said evaporating chamber.
Claim 11
Dependent Claim
50 words
The combination of claim 1 and wherein said tubes are of a U-shaped configuration and include at least some tubes which have an intermediate curved portion situated in said evaporating chamber of said casing means, and said separator means being situated over the latter curved portion of the latter tubEs.
Claim 12
Dependent Claim
41 words
The combination of claim 10 and wherein said casing means includes a spherical pressure enclosure in which said separator means is located and said casing means having parallel tubular extensions in which legs of said tubes of U-shaped configuration are located.
Claim 13
Dependent Claim
60 words
The combination of claim 1 and wherein said casing means has a plurality of inlets and outlets for receiving and discharging the primary heating fluid and houses in its interior a plurality of sets of said tubes to form therewith a plurality of steam-generating units, and said separator means being common to and communicating with all of the latter units.
Claim 14
Dependent Claim
351 words
In a steam generator, particularly adapted for nuclear power plants, casing means having an inlet and outlet for respectively receiving and discharging a primary heating fluid from which heat is to be extracted, a pair of tube plates extending across the interior of said casing means at the region of said inlet and outlet thereof, and a plurality of tubes extending along the interior of said casing means, said tubes being connected in parallel between said tube plates and all of said tubes having open ends communicating with said inlet and outlet of said casing means so that the primary heating fluid flows along the interior of said tubes from said inlet to said outlet of said casing means while a fluid at the exterior of said tubes in said casing means extracts heat from the primary fluid, said casing means having between said tube plates at the region of said inlet a superheating chamber and at the region of said outlet a preheating chamber and between the latter chambers an evaporating chamber, and said casing means having between said tube plates at the region of said outlet an inlet means for introducing water to be received in said preheating chamber and in the region of said inlet an outlet means for discharging superheated steam from said superheating chamber, and separator means communicating with said evaporating chamber for receiving a mixture of steam and water therefrom and for separating the steam from the water, said separator means communicating with said superheating chamber for delivering to the latter the steam separated from the water, said casing means and said tubes therein being of a substantially U-shaped configuration having an intermediate curved portion, a ring-shaped header surrounding said curved portion of said casing means and communicating through said casing means with the interior thereof where the curved portion of said tubes is located, and said separator means communicating with said header for returning to the latter water separated from the steam and water mixture so that from said header the separated water is delivered from the separator means back to the evaporating chamber.
Claim 15
Dependent Claim
351 words
In a steam generator, particularly adapted for nuclear power plants, casing means having an inlet and outlet for respectively receiving and discharging a primary heating fluid from which heat is to be extracted, a pair of tube plates extending across the interior of said casing means at the region of said inlet and outlet thereof, and a plurality of tubes extending along the interior of said casing means, said tubes being connected in parallel between said tube plates and all of said tubes having open ends communicating with said inlet and outlet of said casing means so that the primary heating fluid flows along the interior of said tubes from said inlet to said outlet of said casing means while a fluid at the exterior of said tubes in said casing means extracts heat from the primary fluid, said casing means having between said tube plates at the region of said inlet a superheating chamber and at the region of said outlet a preheating chamber and between the latter chambers an evaporating chamber, and said casing means having between said tube plates at the region of said outlet an inlet means for introducing water to be received in said preheating chamber and in the region of said inlet an outlet means for discharging superheated steam from said superheating chamber, and separator means communicating with said evaporating chamber for receiving a mixture of steam and water therefrom and for separating the steam from the water, said separator means communicating with said superheating chamber for delivering to the latter the steam separated from the water, said casing means and said tubes therein being of a substantially U-shaped configuration having an intermediate curved portion, a ring-shaped header surrounding said curved portion of said casing means and communicating through said casing means with the interior thereof where the curved portion of said tubes is located, and said separator means communicating with said header for returning to the latter water separated from the steam and water mixture so that from said header the separated water is delivered from the separator means back to the evaporating chamber.
Claim 16
Dependent Claim
65 words
The combination of claim 1 and wherein said tubes include two groups of tubes both of which are of U-shaped configuration with one of said groups being longer than the other and including said superheating chamber for generating superheated steam with the latter flowing in countercurrent to the direction of flow of the primary heating fluid in the tubes which extend along said superheating chamber.
Claim 17
Dependent Claim
130 words
The combination of claim 1 and wherein said separator means is situated in said casing means and surrounds said evaporating chamber, and baffle means separating said separator means from said superheating chamber, said baffle means cooperating with said separator means for deflecting steam and water from said evaporating chamber outwardly through an angle of approximately 90* from said tubes into said separator means and the latter directing separated water downwardly along the exterior of said tubes at said evaporating chamber while said separator means communicates through said baffle means with said superheating chamber to direct separated steam through said baffle means into said superheating chamber, so that said separator means acts as a phase separator for separating liquid from steam prior To flow of the latter into said superheating chamber.
Claim 18
Dependent Claim
53 words
The combination of claim 1 and wherein a baffle extends completely across the interior of said casing means at said inlet end region thereof at the side of said outlet means opposite from said inlet tube plate, and said baffle forming the end of said superheating chamber opposite from said inlet tube plate.
Claim 19
Dependent Claim
55 words
The combination of claim 16 and wherein a second baffle extends completely across the interior of said casing means in said outlet end region thereof at the side of said inlet means opposite from said outlet tube plate, and said second baffle forming the end of said preheating chamber opposite from said outlet tube plate.
Claim 20
Dependent Claim
27 words
The combination of claim 12 and wherein said casing means has a substantially spherical housing portion common to all of said units and housing said separator means.
References Cited (Backward Citations)
US2904013A
Cited
US2845906A
Cited
US3141445A
Cited
US3329129A
Cited
US3380649A
Cited
US3807365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |