US3916844A - Steam generator blowdown apparatus - Google Patents

Steam generator blowdown apparatus Download PDF

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Publication number
US3916844A
US3916844A US492646A US49264674A US3916844A US 3916844 A US3916844 A US 3916844A US 492646 A US492646 A US 492646A US 49264674 A US49264674 A US 49264674A US 3916844 A US3916844 A US 3916844A
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United States
Prior art keywords
settling chamber
shell
baffle
secondary liquid
organization
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
US492646A
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English (en)
Inventor
Don Stuart Cassell
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.)
Combustion Engineering Inc
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Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to US492646A priority Critical patent/US3916844A/en
Priority to CA224,280A priority patent/CA1014029A/en
Priority to DE19752532200 priority patent/DE2532200C3/de
Priority to ES439630A priority patent/ES439630A1/es
Priority to JP50090349A priority patent/JPS5137302A/ja
Priority to FR7523544A priority patent/FR2280860A1/fr
Priority to SE7508573A priority patent/SE402158B/xx
Priority to GB31509/75A priority patent/GB1492849A/en
Application granted granted Critical
Publication of US3916844A publication Critical patent/US3916844A/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
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators
    • 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

  • the present invention relates in general to vapor generators of the shell and tube type wherein vaporizable liquid, termed the secondary liquid, is transformed into vapor by passing it in heat exchange relation with the high temperature primary fluid that is conducted through the tubes.
  • Vapor generators of this type characteristically employ a bundle of tubes, either of the inverted U-type in which both ends of each tube are connected to a single tube sheet or of the straight type in which the tubes are connected at their opposite ends to a pair of axially spaced tube sheets.
  • the units operate with a body of secondary liquid maintained at a predetermined level in a downcomer annulus and a riser pas sage with circulation of the liquid between the two sections being maintained by the thermal syphonic action created by the difference in densities between the liquid bodies in the respective sections.
  • the secondary liquid flow through vapor generators of the described type is such that the liquid from the down-comer annulus enters the riser passage from its periphery and must turn and flow upwardly therethrough.
  • This flow pattern creates a region of relatively stagnant flow in the lower part of the riser passage within which any suspended particles entrained in the secondary liquid, such as metal oxides or scaleforming calcium, may be permitted to settle thereby forming sediment deposits.
  • Such deposits if not removed. may cover the tube and tube sheet surfaces thereby operating to reduce the amount of heat transfer area provided thereby.
  • sediment deposits provide a convenient medium for the concentration of corrosive impurities, such as chloride salts, or
  • baffle plate is conveniently disposed to cooperate with the transition member in defining the settling chamber. It should be understood, however, that the invention is equally applicable to shell and tube vapor generators having other shell configurations.
  • FIG. I is a vertical section of a typical shell and tube vapor generator equipped with apparatus of the present invention.
  • FIG. 2 is an enlarged partial vertical section of the vapor generator of FIG. I illustrating the settling cha n ⁇ her of the present invention in greater detail;
  • FIG. 3 is a plan section taken along line 3-3 of FIG. 2;
  • FIG. 4 is an enlarged partial vertical section of an alternative form of the settling chamber of the invention.
  • FIG. I of the drawings there is shown a shell and tube type vapor generator It) incorporating the present invention. It comprises a vertically elongated pressure vessel defined by a lower cylindrical shell section 12 and a larger diameter, upper cylindrical shell section 14, the latter being integrally connected with the former by means of a frustoconical transition member l6.
  • the ends of the vessel are closed, at the bottom by means of hemispherically for med closure head land at the top by a dome-shaped; cover 20 containing a vapor outlet nozzle 22.
  • the interior of the pressure vessel contains a plurality of annular baffles 24, 26 and 28, baffle 24 being a cylindrical shroud extending in coaxially spaced relation from the wall of the lower shell 12 to cooperate therewith in forming an inner riser passage 30 and an outer, annular downcomer passage 32.
  • baffle 24 being a cylindrical shroud extending in coaxially spaced relation from the wall of the lower shell 12 to cooperate therewith in forming an inner riser passage 30 and an outer, annular downcomer passage 32.
  • the lower end of the vessel interior is closed by tube sheet 34 disposed between the lower end of shell 12 and the lower closure head 18.
  • the tube sheet 34 extends transversely of the vessel axis and connects at its periphery between the shell .12 and closure head 18.
  • the tube sheet 34 contains a plurality of tube openings adapted to fixedly receive the ends of inverted U- shaped heat transfer tubes 38 that form a longitudinally extending tube bundle 40 substantially' filling the riser passage 30.
  • the tube ends are open and extend through the tube sheet to place the tubes 38 in fluid communication with a heating fluid chamber that occupies that region of the vessel enclosed between the closure head 18 and the tube sheet 34 and which is divided into inlet and outlet portions 44 and 46, respectively, by means shown-)bymeans'of inlet and outletfnozzles 50,and $2, v
  • the flowing mixture is passedto vapor-liquid separator apparatus',-a'rnultiplicity o f' such separators indicated as 62 bein mounted upon baffle plate 28 and communicating with the char nberfip by means of 'openings61--'providedin the baffle.
  • the separators 62 may be ofany well known -construction,5those shown being of the centrifugal type and area'rranged todisch'arge separated liquid downwa'rdly upon thebaffle plate 28 frdnf'whence it is-"returned tofthe downcomer. passage- 32 to be mixed with the incoming feedwater, and recircuIated through the unit.
  • the separated vapor is disjchargedfrorn the separators62 in the upward direction for discharge ofzthe vapor outlet noz zle' 22 from .-whence .it is jconductedt oa point of use.
  • an annular baffle i s provided in the upperregi'on of the downcomer passage 32.
  • the baffle 64 is concentrically space'd be- .tweenithe cylindrical shroud 24 and the interior surface of the pressure-shell.
  • the baffle 64'i's prefera-; .bly disposed adjacent the transition member'16 to cooperate therewith in defining a settling chamber 66.
  • the baffle plate 64 is sealedly at- -;tached, as by means of welding to the juncture of the :Itransition member 16 and the lower shell section 1 2. thereby. forming the closed bottom of the chamber .At'itsupper end the baffle plate 64 possessesan'iout- 1 turned flange 68 intended to prevent flow of secondary liq'uid directly into the lower regionof the downcomer passage 32.
  • the end edge of .the flange is disposed in close concentric spacingwith respect to the adjacent surface of the shroud 24 in order to accommodate thermally induced relative movements between the shroud and the shell. 1 v.
  • the baffle plate defines aninletopening, indicated as 70, to the settling chamber 66. As shown, this opening is disposed below the discharge ports 58- of the feedwater inlet header 56 whereby'the secondary liquidadrnitted to theisettling chamber 66is a mixture ,ofithe fresh, incoming feedww 1 ter and separated liquid from the separatorsv62, the lat- -t'er being 'recirculated through the unit.
  • the plate Adjacent its upper end ,'however, the plate is provided with a plurality of openings 72 which'esltablish fluid communication between these ttlingcharnber and the remainder of the downcomer passage 3 2."
  • B y means'of this arrangement thesecondary liquidenteringthe settling chamber, in addition to having' itsflow velocity reduced, is also caused to undergo an abrupt reversal of direction as shown by thear rows 74 whereby entrained particulate material isre'movedfrom the'flo w streamby gravity and falls as sediment to the bottom of thecham-ber.
  • An annular"blowdown pipe 76' is disposed in the lower" regionof the settling ch amber'66.
  • the pipe is perforated, as 51:78, along its length and'co'mmunicates with: the exterior'ofthe pressu r elshell' through blowdown nozzle 80 is as shownin FIG. 3, T- connected to the pipe.
  • Means (not'shown) connect with the blowdown nozzle' 80 whereby blowdown of the removed particulate material can be effected on either a continuous or'a periodic basis.
  • FIG 4 of the drawing there is illustrated an alternative form of the invention in which the perforated baf fleplate j64of the ern bodiment'is replaced-in.
  • thesettl ing chamber 66 byabaffle arrangement com prising members 82 and 84 which define a tortuous fluid: path between the se'"ttling "chamber and the re mainder of the fdo'wncomer passage3 2.
  • Member '82 is upper end edge of the member 82 and telescopically encloses the amete define a fluid path by .-means of which the flowing secondary liquid is caused to undergo an abrupt change of direction prior to exiting the settling chamber 66 whereby to induce gravitational removal of entrained particulate material for discharge through blowdown pipe 76 in a mannersimilar to that effected by thearrangement shown in FIG. 1.
  • apparatus as'hereindescribed provides ajcohvenient solution'l'to the problem of removing sedimefit forrningparticulate material from the secondary 'liq'uid tha't is circulated through J shell and tube vapor generators. Because the arrangemerit requires'no blowdown piping within 'thetinterior of the tube bundle, spaces thatcould only be produced parting from to shell an by the 'removal'of heat exchange tubes are not required. Moreover, because the settling chamber and its attendant blowdown pip'ingis locatedinthe dow'ncomer passage remote from the tubebundle no:heat
  • a shell and tube heat exchanger for the generation of vapor by the indirect transfer of heat from a heating fluid to a secondary liquid
  • a pressure shell having a transverse tube sheet defining a vapor generating region enclosing a bundle of heat exchange tubes emanating from said tube sheet, means for passing heating fluid through said tubes and means for circulating said secondary liquid through said vapor generating region exteriorly of said tubes, the improvement comprising means for the removal of suspended particulate material from said circulating secondary liquid, said means including:
  • baffle means defining a settling chamber forming a low liquid flow velocity region within the interior of said pressure shell
  • said settling chamber having an opening for the reception of secondary liquid flowing within said vapor generating region and defining a flow path in which said secondary liquid undergoes an abrupt change of direction;
  • blowdown pipe operatively disposed in said set tling chamber and communicating with the exterior of said pressure shell for the discharge of settled particulate material from said settling chamber.
  • said heat exchanger includes a generally cylindrical baffle enclosing said bundle of heat exchange tubes in circumferentially spaced relation from the interior surface of said pressure shell to define an axial riser passage and an annular downcomer passage and said settling chamber is disposed in said downcomer passage.
  • said secondary liquid circulating means includes feedwater inlet means communicating with said downcomer passage upstream in the secondary liquid flow sense from said settling chamber.
  • said baffle means includes a substantially cylindrical plate concentrically spaced between said cylindrical baffle and the interior surface of said pressure shell defining an annular settling chamber about said downcomer passage, said plate being imperforate at least over a substantial portion of its length.
  • said baffle plate includes an out-turned flange disposed adjacent the inlet opening of said settling chamber, said flange having an end surface in closely spaced concentric relation to said cylindrical baffle, and means forming perforations in said baffle plate adjacent said flange.
  • said pressure shell includes an enlarged diameter upper shell portion and a reduced diameter lower shell portion, a conical transistion member connecting said shell portions, said baffle plate cooperating with the internal surface of said transition member to form said settling chamber.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Cyclones (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US492646A 1974-07-29 1974-07-29 Steam generator blowdown apparatus Expired - Lifetime US3916844A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US492646A US3916844A (en) 1974-07-29 1974-07-29 Steam generator blowdown apparatus
CA224,280A CA1014029A (en) 1974-07-29 1975-04-10 Steam generator blowdown apparatus
DE19752532200 DE2532200C3 (de) 1974-07-29 1975-07-18 Abschlämmeinrichtung in einem Dampferzeuger
ES439630A ES439630A1 (es) 1974-07-29 1975-07-22 Perfeccionamientos en los aparatos de evacuacion de particu-las suspendidas en el liquido secundario en circulacion en termocambiadores tubulares.
JP50090349A JPS5137302A (en) 1974-07-29 1975-07-25 Kanjojokihatsuseisochi
FR7523544A FR2280860A1 (fr) 1974-07-29 1975-07-28 Dispositif d'elimination de particules en suspension dans un echangeur de chaleur
SE7508573A SE402158B (sv) 1974-07-29 1975-07-28 Anordning for avlegsnande av suspenderat, partikelformigt material fran den cirkulerande sekundervetskan i en vermevexlare for alstrande av anga
GB31509/75A GB1492849A (en) 1974-07-29 1975-07-28 Shell and tube heat exchangers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492646A US3916844A (en) 1974-07-29 1974-07-29 Steam generator blowdown apparatus

Publications (1)

Publication Number Publication Date
US3916844A true US3916844A (en) 1975-11-04

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US492646A Expired - Lifetime US3916844A (en) 1974-07-29 1974-07-29 Steam generator blowdown apparatus

Country Status (7)

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US (1) US3916844A (fr)
JP (1) JPS5137302A (fr)
CA (1) CA1014029A (fr)
ES (1) ES439630A1 (fr)
FR (1) FR2280860A1 (fr)
GB (1) GB1492849A (fr)
SE (1) SE402158B (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037569A (en) * 1976-01-30 1977-07-26 Westinghouse Electric Corporation Flow distribution arrangement for a steam generator
US4158387A (en) * 1978-04-24 1979-06-19 The Babcock & Wilcox Company Blowdown apparatus
DE2949975A1 (de) * 1978-12-26 1980-07-17 Combustion Eng Dampferzeugeranordnung fuer kernkraftwerke
EP0023808A2 (fr) * 1979-07-25 1981-02-11 Westinghouse Electric Corporation Générateur de vapeur nucléaire
DE3130400A1 (de) * 1980-07-31 1982-06-16 Framatome, 92400 Courbevoie Verteiler zur einfuehrung eines fluids in einen dampfgenerator
EP0132112A2 (fr) * 1983-07-13 1985-01-23 Westinghouse Electric Corporation Dispositif d'élimination des boues pour un générateur de vapeur
EP0161894A2 (fr) * 1984-05-14 1985-11-21 Westinghouse Electric Corporation Tube de décharge pour empêcher la stratification dans les collecteurs d'eau d'alimentation d'un générateur de vapeur
EP0183049A1 (fr) * 1984-11-15 1986-06-04 Westinghouse Electric Corporation Plaque perforée de distribution de l'écoulement
EP0185174A1 (fr) * 1984-12-03 1986-06-25 Westinghouse Electric Corporation Générateur de vapeur comprenant une trappe à boue
US4632068A (en) * 1984-05-24 1986-12-30 Westinghouse Electric Corp. Modular sludge collection system for a nuclear steam generator
US4645542A (en) * 1984-04-26 1987-02-24 Anco Engineers, Inc. Method of pressure pulse cleaning the interior of heat exchanger tubes located within a pressure vessel such as a tube bundle heat exchanger, boiler, condenser or the like
US4655846A (en) * 1983-04-19 1987-04-07 Anco Engineers, Inc. Method of pressure pulse cleaning a tube bundle heat exchanger
US4706613A (en) * 1986-10-17 1987-11-17 Westinghouse Electric Corp. Steam generator having an auxiliary recirculation path
US4736713A (en) * 1984-11-15 1988-04-12 Westinghouse Electric Corp. Foraminous or perforated flow distribution plate
US4762091A (en) * 1984-12-03 1988-08-09 Westinghouse Electric Corp. Sludge trap with internal baffles for use in nuclear steam generator
US4773357A (en) * 1986-08-29 1988-09-27 Anco Engineers, Inc. Water cannon apparatus and method for cleaning a tube bundle heat exchanger, boiler, condenser, or the like
WO1990012983A1 (fr) * 1989-04-25 1990-11-01 Kindling, Alexander, T. Procede et appareil servant a regler le courant d'un fluide dans un generateur de vapeur vertical
US5088451A (en) * 1990-04-09 1992-02-18 Westinghouse Electric Corp. Sludge removal system for removing sludge from heat exchangers
FR2684433A1 (fr) * 1991-12-02 1993-06-04 Framatome Sa Dispositif de piegeage de corps migrants a l'interieur du circuit secondaire d'un generateur de vapeur.
FR2690504A1 (fr) * 1992-04-28 1993-10-29 Framatome Sa Générateur de vapeur à dispositif de distribution et de réparation de l'eau alimentaire et de l'eau de recirculation dans la partie secondaire.
US5329886A (en) * 1993-08-02 1994-07-19 Westinghouse Electric Corporation Steam generator
US20080121194A1 (en) * 2006-11-28 2008-05-29 Prabhu Padmanabha J Steam generator loose parts collector weir
US8953735B2 (en) 2006-11-28 2015-02-10 Westinghouse Electric Company Llc Steam generator dual system sludge and loose parts collector
US11371788B2 (en) * 2018-09-10 2022-06-28 General Electric Company Heat exchangers with a particulate flushing manifold and systems and methods of flushing particulates from a heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2471666A (en) * 2009-07-07 2011-01-12 Dumitru Fetcu Heat recovery steam generator with heat pipes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114353A (en) * 1959-06-25 1963-12-17 Babcock & Wilcox Co Vapor generating unit and method of operating same
US3139070A (en) * 1961-01-31 1964-06-30 Babcock & Wilcox Co Vapor generating unit
US3576179A (en) * 1969-12-24 1971-04-27 Combustion Eng Economizer for shell-and-tube steam generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114353A (en) * 1959-06-25 1963-12-17 Babcock & Wilcox Co Vapor generating unit and method of operating same
US3139070A (en) * 1961-01-31 1964-06-30 Babcock & Wilcox Co Vapor generating unit
US3576179A (en) * 1969-12-24 1971-04-27 Combustion Eng Economizer for shell-and-tube steam generator

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037569A (en) * 1976-01-30 1977-07-26 Westinghouse Electric Corporation Flow distribution arrangement for a steam generator
US4158387A (en) * 1978-04-24 1979-06-19 The Babcock & Wilcox Company Blowdown apparatus
DE2949975A1 (de) * 1978-12-26 1980-07-17 Combustion Eng Dampferzeugeranordnung fuer kernkraftwerke
US4261300A (en) * 1978-12-26 1981-04-14 Combustion Engineering, Inc. Nuclear steam generator
EP0023808A2 (fr) * 1979-07-25 1981-02-11 Westinghouse Electric Corporation Générateur de vapeur nucléaire
FR2462655A1 (fr) * 1979-07-25 1981-02-13 Westinghouse Electric Corp Distributeur collecteur de boues pour generateur nucleaire de vapeur
EP0023808A3 (en) * 1979-07-25 1981-11-11 Westinghouse Electric Corporation Nuclear steam generator
US4303043A (en) * 1979-07-25 1981-12-01 Westinghouse Electric Corp. Sludge collection system for a nuclear steam generator
DE3130400A1 (de) * 1980-07-31 1982-06-16 Framatome, 92400 Courbevoie Verteiler zur einfuehrung eines fluids in einen dampfgenerator
US4655846A (en) * 1983-04-19 1987-04-07 Anco Engineers, Inc. Method of pressure pulse cleaning a tube bundle heat exchanger
EP0132112A2 (fr) * 1983-07-13 1985-01-23 Westinghouse Electric Corporation Dispositif d'élimination des boues pour un générateur de vapeur
EP0132112A3 (en) * 1983-07-13 1985-10-02 Westinghouse Electric Corporation Sludge removing apparatus for a steam generator
US4566406A (en) * 1983-07-13 1986-01-28 Westinghouse Electric Corp. Sludge removing apparatus for a steam generator
US4645542A (en) * 1984-04-26 1987-02-24 Anco Engineers, Inc. Method of pressure pulse cleaning the interior of heat exchanger tubes located within a pressure vessel such as a tube bundle heat exchanger, boiler, condenser or the like
EP0161894A2 (fr) * 1984-05-14 1985-11-21 Westinghouse Electric Corporation Tube de décharge pour empêcher la stratification dans les collecteurs d'eau d'alimentation d'un générateur de vapeur
EP0161894A3 (en) * 1984-05-14 1986-06-25 Westinghouse Electric Corporation Discharge tube for inhibiting stratification in feedwater headers of a steam generator
US4632068A (en) * 1984-05-24 1986-12-30 Westinghouse Electric Corp. Modular sludge collection system for a nuclear steam generator
EP0183049A1 (fr) * 1984-11-15 1986-06-04 Westinghouse Electric Corporation Plaque perforée de distribution de l'écoulement
US4736713A (en) * 1984-11-15 1988-04-12 Westinghouse Electric Corp. Foraminous or perforated flow distribution plate
US4649868A (en) * 1984-12-03 1987-03-17 Westinghouse Electric Corp. Sludge trap with internal baffles for use in nuclear steam generator
EP0185174A1 (fr) * 1984-12-03 1986-06-25 Westinghouse Electric Corporation Générateur de vapeur comprenant une trappe à boue
US4762091A (en) * 1984-12-03 1988-08-09 Westinghouse Electric Corp. Sludge trap with internal baffles for use in nuclear steam generator
US4773357A (en) * 1986-08-29 1988-09-27 Anco Engineers, Inc. Water cannon apparatus and method for cleaning a tube bundle heat exchanger, boiler, condenser, or the like
US4706613A (en) * 1986-10-17 1987-11-17 Westinghouse Electric Corp. Steam generator having an auxiliary recirculation path
WO1990012983A1 (fr) * 1989-04-25 1990-11-01 Kindling, Alexander, T. Procede et appareil servant a regler le courant d'un fluide dans un generateur de vapeur vertical
US4972804A (en) * 1989-04-25 1990-11-27 Alexander T. Kindling Method and apparatus for organizing the flow of fluid in a vertical steam generator
US5088451A (en) * 1990-04-09 1992-02-18 Westinghouse Electric Corp. Sludge removal system for removing sludge from heat exchangers
EP0545800A1 (fr) * 1991-12-02 1993-06-09 Framatome Dispositif de piègeage de corps migrants à l'intérieur du circuit secondaire d'un générateur de vapeur
FR2684433A1 (fr) * 1991-12-02 1993-06-04 Framatome Sa Dispositif de piegeage de corps migrants a l'interieur du circuit secondaire d'un generateur de vapeur.
US5390219A (en) * 1991-12-02 1995-02-14 Framatome Device for trapping migrating bodies within the secondary circuit of a steam generator
FR2690504A1 (fr) * 1992-04-28 1993-10-29 Framatome Sa Générateur de vapeur à dispositif de distribution et de réparation de l'eau alimentaire et de l'eau de recirculation dans la partie secondaire.
EP0568434A1 (fr) * 1992-04-28 1993-11-03 Framatome Générateur de vapeur à dispositif de distribution et de répartition de l'eau alimentaire et de l'eau de recirculation dans la partie secondaire
US5323736A (en) * 1992-04-28 1994-06-28 Framatome Steam generator with device for the distribution of feed water and recirculation water in the secondary part
US5329886A (en) * 1993-08-02 1994-07-19 Westinghouse Electric Corporation Steam generator
US20080121194A1 (en) * 2006-11-28 2008-05-29 Prabhu Padmanabha J Steam generator loose parts collector weir
US7434546B2 (en) 2006-11-28 2008-10-14 Westinghouse Electric Co. Llc Steam generator loose parts collector weir
US8953735B2 (en) 2006-11-28 2015-02-10 Westinghouse Electric Company Llc Steam generator dual system sludge and loose parts collector
US11371788B2 (en) * 2018-09-10 2022-06-28 General Electric Company Heat exchangers with a particulate flushing manifold and systems and methods of flushing particulates from a heat exchanger

Also Published As

Publication number Publication date
JPS529763B2 (fr) 1977-03-18
SE402158B (sv) 1978-06-19
DE2532200A1 (de) 1976-02-19
ES439630A1 (es) 1977-03-16
FR2280860A1 (fr) 1976-02-27
SE7508573L (sv) 1976-01-30
DE2532200B2 (de) 1977-05-05
JPS5137302A (en) 1976-03-29
CA1014029A (en) 1977-07-19
GB1492849A (en) 1977-11-23

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