US3854453A - Steam generator - Google Patents

Steam generator Download PDF

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Publication number
US3854453A
US3854453A US00306939A US30693972A US3854453A US 3854453 A US3854453 A US 3854453A US 00306939 A US00306939 A US 00306939A US 30693972 A US30693972 A US 30693972A US 3854453 A US3854453 A US 3854453A
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US
United States
Prior art keywords
separator
water
steam
feed
steam generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00306939A
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English (en)
Inventor
H Mayer
H Schroder
G Schucktanz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
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Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3854453A publication Critical patent/US3854453A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/22—Drums; Headers; Accessories therefor
    • F22B37/228—Headers for distributing feedwater into steam generator vessels; Accessories therefor

Definitions

  • This invention is concerned with steam generators, particularly with steam generators used in nuclear reactors in which a heat exchanger is used for carrying a primary and a secondary heating medium and in which separators are located above the heat exchangers.
  • the secondary medium can be fed in by a distributor plate.
  • pipe lines having several discharge openings can be provided to introduce secondary medium in the region of the separators, where the pipe lines may be arranged in star fashion running toward the center of the steam generator.
  • FIG. 1 is a longitudinal cross-sectional view of the steam generator
  • FIG. 2 is a horizontal cross-sectional view of the generator taken along lines IIII of FIG. 1;
  • FIG. 3 is a partial longitudinal cross-sectional view of a modified feeding system
  • FIG. 4 is a partial longitudinal cross-sectional view of a modified feeding system
  • FIG. 5 is a partial longitudinal cross-sectional view of a modified feeding system.
  • FIG. 1 which is a longitudinal crosssectional view through a steam generator
  • the previously known U-tube heat exchanger 2 has a primary heating medium inlet 3 and the primary heating medium outlet 4 within a tank enclosure 1.
  • a separator 5 is located above the group of U-tubes 2. Any steam generated within the system flows out through the livesteam output line 6 in steam dome 7.
  • the cold secondary medium is fed in by an inlet 8 and flows from ring pipe 9, situated below water level 10, into ring gap 11 between the cylindrical baffle 12 and the tank enclosure 1.
  • the cylindrical baffle l2 surrounds the group of U-tubes 2 and serves as the support for separator 5.
  • the secondary heating medium rises in the U-tubes 2, forming'steam bubbles.
  • the generated steam flows out through the output line 6.
  • the circulating water flows off separator 5 into ring gap 11, mixing with the freshly fed secondary heating medium from ring line 9.
  • FIG. 2 which shows a cross-sectional view along lines IIII of FIG. 1, several pipe lines 15 are led in star fashion from the ring line 9 to the region of the separator 5. (Separator 5 is not included in FIG. 2 in order to maintain simplicity.)
  • the dis-- charge openings 15a in pipes 15 By means of the dis-- charge openings 15a in pipes 15, the uniform feeding of the secondary heating medium in the area of the separator 5 is achieved. Accordingly, uniform cooling of the circulating water is obtained.
  • FIG. 3 illustrates a different embodiment of the feeding system.
  • pipe lines 15 are not brought directly into proximity with separator 5, but pipe lines 15 run, for example, in star fashion above separator and are provided with downward extending pipes 16, reaching between the separator elements.
  • the secondary medium emerges within separator 5 from the pipe openings at the end of pipes 16 and additionally from discharge openings 16a.
  • the feed lines for the secondary medium thus end above the circulating water outlet 17 of the separator elements of separator 5. The uniform cooling of the circulating water thus is not impaired.
  • pipe lines also run in star fashion between the elements of separator 5, below exit plane 17 of the circulating water from separator 5.
  • the pipe system 15 is not fed from a ring line, but the secondary medium is fed to it centrally through the feed inlet 18.
  • a distributor plate 19 is provided to feed in the secondary medium.
  • This distributor plate 19 acts as a double plate replacing the otherwise customary plate on which the elements of separator 5 are mounted.
  • the inlet pipes for the elements of the separator penetrate the double plated sandwich construction.
  • the feed water is conducted through the feed line 20 into the distributor plate 19 and flows from there uniformly over the separator cross section through discharge openings and then upward between the inlet pipes of separator 5 and into proximity with separators 5.
  • the secondary medium is mixed with the circulating water flowing from the elements of separator 5. Because the discharge openings for the feed water can be distributed extremely uniformly in the upper plate of distributor plate 19, a particularly uniform mixing of the circulating water with the feed water is obtained by this embodiment.
  • feed line 20a shown in FIG. 5 by dotted lines.
  • feed line 20a feed water is fed into the distributor plate 19 from the top through the elements of separator 5.
  • This feed line 200 can be connected to the distributor plate 19 at any point on its cross section.
  • a definite, controllable water level can be obtained by the steam generator of this invention, because the formation of foam in the circulating water is prevented.
  • the amount of residual moisture remaining in the live steam is eliminated and the capacity of the separators increased.
  • the number of separator elements required can therefore be reduced, resulting in considerable cost savings.
  • the cross-sectional flow-off area for the circulating water can be made smaller, making it possible to reduce the diameter of the tank enclosure in the steam generator, resulting in additional cost savings.
  • the risk of instability in the circulation system is reduced and by the steam generator manufactured according to the invention a greater increase in secondary pressure is possible, because the carry-under, which increases with increasing secondary pressure, is condensed.
  • a steam generator having a steam dome with a steam output line in its upper portion and a tank enclosure below said dome, a heat exchanger in said enclosure, a water separator in said steam dome and dis charging water downwardly, and a feed-water inlet for said tank; wherein the improvement comprises means for distributing at least a portion of the feed-water from said inlet throughout the cross-sectional area of said separator.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Jet Pumps And Other Pumps (AREA)
US00306939A 1971-11-17 1972-11-15 Steam generator Expired - Lifetime US3854453A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2157069A DE2157069C3 (de) 1971-11-17 1971-11-17 Dampferzeuger

Publications (1)

Publication Number Publication Date
US3854453A true US3854453A (en) 1974-12-17

Family

ID=5825394

Family Applications (1)

Application Number Title Priority Date Filing Date
US00306939A Expired - Lifetime US3854453A (en) 1971-11-17 1972-11-15 Steam generator

Country Status (10)

Country Link
US (1) US3854453A (enrdf_load_stackoverflow)
JP (1) JPS5544843B2 (enrdf_load_stackoverflow)
AT (1) AT319976B (enrdf_load_stackoverflow)
BE (1) BE791459A (enrdf_load_stackoverflow)
CH (1) CH544913A (enrdf_load_stackoverflow)
DE (1) DE2157069C3 (enrdf_load_stackoverflow)
FR (1) FR2161592A5 (enrdf_load_stackoverflow)
GB (1) GB1408952A (enrdf_load_stackoverflow)
IT (1) IT970859B (enrdf_load_stackoverflow)
SE (1) SE381503B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991720A (en) * 1975-01-29 1976-11-16 Westinghouse Electric Corporation J tube discharge or feedwater header
US4368693A (en) * 1980-07-31 1983-01-18 Framatome Distributor for the admission of a fluid to be vaporized into a steam generator
US4498426A (en) * 1982-02-04 1985-02-12 Framatome & Cie Superheated steam generator comprising bank of U-tubes
US20050080312A1 (en) * 2003-10-14 2005-04-14 Reinhardt Aldon R. Environmental clean-up system
US20050092264A1 (en) * 2003-08-07 2005-05-05 Framatome Anp Heat exchanger, and in particular a steam generator having a convex bottom
US20060024135A1 (en) * 2003-10-14 2006-02-02 Vapor Tech, Inc. Heavy oil extraction system
US20070283905A1 (en) * 2003-10-14 2007-12-13 Vapor Tech, Inc. Vapor generator with preheater and method of operating same
US20100212605A1 (en) * 2008-02-29 2010-08-26 Mitsubishi Heavy Industries, Ltd. Steam generator
US20110197830A1 (en) * 2008-09-09 2011-08-18 Brueckner Jan Continuous steam generator
EP2814039A4 (en) * 2012-02-07 2015-11-04 Mitsubishi Heavy Ind Ltd WATER SUPPLY DRIVE FOR A STEAM GENERATOR

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606368A1 (de) * 1976-02-18 1977-08-25 Adolf H Borst Verfahren zur herstellung aktiver kohlen und einrichtungn zur durchfuehrung des verfahrens
US4579088A (en) * 1984-04-09 1986-04-01 Westinghouse Electric Corp. Open channel steam generator feedwater system
US4502419A (en) * 1984-05-14 1985-03-05 Westinghouse Electric Corp. Discharge tube for inhibiting stratification in feedwater headers of a steam generator
US4554889A (en) * 1984-06-22 1985-11-26 Westinghouse Electric Corp. Hybrid preheat/recirculating steam generator
CZ100592A3 (en) * 1992-04-03 1993-10-13 Vitkovice As Supply system of a heat-exchange apparatus, particularly of a steam producer
US5329886A (en) * 1993-08-02 1994-07-19 Westinghouse Electric Corporation Steam generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250258A (en) * 1964-06-29 1966-05-10 Foster Wheeler Corp Straight tubes in a vertical shell steam generator
US3296779A (en) * 1964-03-06 1967-01-10 Ernest L Daman Vapor-liquid separator
US3682140A (en) * 1969-04-15 1972-08-08 Sulzer Ag Vapor generating plant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH475023A (de) * 1967-05-31 1969-07-15 Sulzer Ag Wasserabscheider zu einem Sattdampferzeuger, insbesondere für Atomkernreaktoranlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296779A (en) * 1964-03-06 1967-01-10 Ernest L Daman Vapor-liquid separator
US3250258A (en) * 1964-06-29 1966-05-10 Foster Wheeler Corp Straight tubes in a vertical shell steam generator
US3682140A (en) * 1969-04-15 1972-08-08 Sulzer Ag Vapor generating plant

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991720A (en) * 1975-01-29 1976-11-16 Westinghouse Electric Corporation J tube discharge or feedwater header
US4368693A (en) * 1980-07-31 1983-01-18 Framatome Distributor for the admission of a fluid to be vaporized into a steam generator
US4498426A (en) * 1982-02-04 1985-02-12 Framatome & Cie Superheated steam generator comprising bank of U-tubes
US7000571B2 (en) * 2003-08-07 2006-02-21 Framatome Anp Heat exchanger, and in particular a steam generator having a convex bottom
US20050092264A1 (en) * 2003-08-07 2005-05-05 Framatome Anp Heat exchanger, and in particular a steam generator having a convex bottom
US7293532B2 (en) 2003-10-14 2007-11-13 Goodfield Energy Corp. Heavy oil extraction system
US20060024135A1 (en) * 2003-10-14 2006-02-02 Vapor Tech, Inc. Heavy oil extraction system
US7228822B2 (en) 2003-10-14 2007-06-12 Goodfield Energy Corporation Vapor generator using pre-heated injected water
US20050080312A1 (en) * 2003-10-14 2005-04-14 Reinhardt Aldon R. Environmental clean-up system
US20070283905A1 (en) * 2003-10-14 2007-12-13 Vapor Tech, Inc. Vapor generator with preheater and method of operating same
US7721679B2 (en) 2003-10-14 2010-05-25 Goodfield Energy Corporation Vapor generator with preheater and method of operating same
US20100212605A1 (en) * 2008-02-29 2010-08-26 Mitsubishi Heavy Industries, Ltd. Steam generator
US8881690B2 (en) * 2008-02-29 2014-11-11 Mitsubishi Heavy Industries, Ltd. Steam generator
US20110197830A1 (en) * 2008-09-09 2011-08-18 Brueckner Jan Continuous steam generator
US9267678B2 (en) * 2008-09-09 2016-02-23 Siemens Aktiengesellschaft Continuous steam generator
EP2814039A4 (en) * 2012-02-07 2015-11-04 Mitsubishi Heavy Ind Ltd WATER SUPPLY DRIVE FOR A STEAM GENERATOR

Also Published As

Publication number Publication date
DE2157069B2 (de) 1974-07-11
DE2157069C3 (de) 1975-02-27
JPS4861894A (enrdf_load_stackoverflow) 1973-08-29
AT319976B (de) 1975-01-27
SE381503B (sv) 1975-12-08
FR2161592A5 (enrdf_load_stackoverflow) 1973-07-06
CH544913A (de) 1973-11-30
BE791459A (fr) 1973-03-16
IT970859B (it) 1974-04-20
DE2157069A1 (de) 1973-05-24
GB1408952A (en) 1975-10-08
JPS5544843B2 (enrdf_load_stackoverflow) 1980-11-14

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