US3812825A - Sodium heated helical coil arrangement - Google Patents

Sodium heated helical coil arrangement Download PDF

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Publication number
US3812825A
US3812825A US00121665A US12166571A US3812825A US 3812825 A US3812825 A US 3812825A US 00121665 A US00121665 A US 00121665A US 12166571 A US12166571 A US 12166571A US 3812825 A US3812825 A US 3812825A
Authority
US
United States
Prior art keywords
sodium
sections
support pipe
helical coil
superheater
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
US00121665A
Other languages
English (en)
Inventor
J Roberts
J Polcer
R Barratt
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.)
General Electric Co
Foster Wheeler Inc
Original Assignee
General Electric Co
Foster Wheeler 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 General Electric Co, Foster Wheeler Inc filed Critical General Electric Co
Priority to US00121665A priority Critical patent/US3812825A/en
Priority to CA135,582A priority patent/CA946831A/en
Priority to CH332672A priority patent/CH546377A/xx
Priority to IT12516/72A priority patent/IT957300B/it
Priority to JP2324072A priority patent/JPS555001B1/ja
Priority to ZA721574A priority patent/ZA721574B/xx
Priority to ES400538A priority patent/ES400538A1/es
Priority to GB1086772A priority patent/GB1387057A/en
Priority to NL7203065A priority patent/NL7203065A/xx
Priority to AU39743/72A priority patent/AU453587B2/en
Priority to DE19722211190 priority patent/DE2211190A1/de
Priority to FR7208019A priority patent/FR2129508A5/fr
Priority to SE02965/72A priority patent/SE367722B/xx
Priority to BE780362A priority patent/BE780362A/xx
Priority to DK106572AA priority patent/DK131439B/da
Priority to DK89274A priority patent/DK132718C/da
Application granted granted Critical
Publication of US3812825A publication Critical patent/US3812825A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/005—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having bent portions or being assembled from bent tubes or being tubes having a toroidal configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/06—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium
    • F22B1/063—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium for metal cooled nuclear reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0054—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for nuclear applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/224—Longitudinal partitions

Definitions

  • the present helical coil superheater indicated generally as has a cylindrical pressure vessel 12 which includes a main section 14 and a head section 16 which are generally circular in horizontal cross-section. At the lower end of the head section is an annular flange 18 which is secured on top of an annular flange 20 on the top of the main section 14.
  • the head section 16 includes an inlet toroid 24 which is fed with steam through inlets 26.
  • the inlet toroid 24 is defined by an outer vertical wall 28, and inner vertical wall 30 and an annular plate 32 which is bolted at its marginal portions to the tops of the vertical walls 28 and 30.
  • the steam flows from the inlet toroid 24 through downcomer tubes 36 which pass within'a tube bundle support pipe 38.
  • the tube bundle support pipe 38 is outwardly flared at its upper end portion 40 so that it is wide enough at its upper end to accomodate all of the downcomer tubes 36.
  • the downcomer tubes 36 occupy an annular space between the tube bundle support pipe 38 and a central relief duct 42 which is positioned within and is co-axial with the tube bundle support pipe 38.
  • the function of the central relief duct 42 will be explained in detail presently.
  • the tubes pass downwardly beyond the tube bundle support pipe 38 and the central relief duct 42 through an annular sheet 44 and are each joined to a connecting section 46 which extends outwardly and upwardly back through the annular sheet 44 and through an annular perforated plate 48 and an annular perforated bottom lateral support plate 50.
  • Each of the connecting sections is joined to a helical section 52 (only several of which are shown for the sake of clarity), which carry the steam to an elevation slightly below distribution rings 54, the function of which will be explained presently.
  • the helical tube sections are joined at their upper ends to upwardly extending riser sections 56 which lead to an annular tube sheet 60 which extends outwardly from the tube bundle support pipe 38. After exiting the riser section 56, the steam passes through collecting chambers 62 which cover portions of the sheet 60 and then leaves by the steam outlets 64.
  • the steam is superheated while in the helical sections 52 by downward flowing liquid sodium.
  • the sodium enters the superheater 10 through sodium inlets 68.
  • the sodium then passes to the annular space occupied by the straight riser sections 56 which extend between the distribution rings 54 and calming rings 70.
  • the sodium is distributed by the rings 54 uniformily down over the straight sections 56, the helical sections 52 and through the annular bottom support member 50, the annular plate 48 over the sheet and through the hole in its center.
  • the sodium then flows through an orifice 74 in a bottom plate 76.
  • the sodium then flows through a sodium outlet 80 and is returned to the reactor for reheating.
  • the helical coil sections 52 are supported by a bracket 81.
  • the bracket 81 consists of a collar encircling the tube support bundle 38 and a number of radially extending arms which are connected to the riser sections 56. Each arm can support a number of riser sections and thus support the helical sections joined to them.
  • the pressure vessel 10 is protected at its inside surface with a cladding of stainless steel. In the event that liquid sodium should impinge against the pressure vessel, the stainless steel will delay its burning through long enough for detection devices to indicate the presence of a sodium-water reaction and for corrective measures to be taken.
  • a flow shroud 82 which extends outwardly into the sodium inlets 68 and above and below them adjacent to the inner walls of the pressure vessel.
  • the flow shroud 82 is flared inwardly at its bottom portion 84 and engages at its end with a sleeve 86 which places the orifice 74 in direct communication with the sodium outlet 80. A stagnant layer of sodium will be trapped between the flow shroud 82 and the pressure vessel 10 to provide insulation.
  • sodium flows through sodium inlet 68 it will assume a level somewhat above the inlet in the annular space outside of the tube bundle support pipe 38. There will be an annular body of stagnant sodium between the tube bundle support pipe 38 and the central release duct 42. This is desirable because it prevents the straight downcomer sections of the tubes 36 from being exposed to an excessive amount of heat. Further, it will prevent damage to the central relief duct 42, which in the event of a sodium-water reaction will exhaust the products of that reaction upwardly through a sodium-water reaction vent 90.
  • the sodium-water reaction vent 90 is flared outwardly at its bottom to accomodate a hood 92 which directs the products of the reaction into the sodium-water reaction vent 90. With the present arrangement, the products of the reaction will have a flow path of very little resistance and which is straight so that the products can be quickly exhausted without excessively damaging the present superheater l0.
  • a sodium heated superheater comprising a vertically elongated pressure vessel, a liquid sodium inlet in said pressure vessel, a sodium outlet adjacent to the bottom of said vessel, a tube bundle support pipe within and co-axial with said vessel, a sodium reaction relief duct open at both ends within and co-axial with said support pipe, a plurality of downcomer tubes extending down between and to an elevation below said support pipe and said relief duct, a plurality of helical coil sections below said liquid sodium inlet and above said sodium outlet, a plurality of tubular connecting sections,
  • each of said downcomer tubes joined to one of said tubular connecting section which connects each of said downcomer tubes with one of said helical coil sections, said helical coil sections extending upwardly between said support pipe and said vessel, whereby saturated steam passes down said downcomer tubes through said connecting sections and upwardly through said helical coil sections, and said sodium flows in through said sodium inlet and down over said coils to superheat said steam, said sodium filling the space between said relief duct and said support pipe to create a stagnant body of sodium having a level below the top of said relief pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00121665A 1971-03-08 1971-03-08 Sodium heated helical coil arrangement Expired - Lifetime US3812825A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US00121665A US3812825A (en) 1971-03-08 1971-03-08 Sodium heated helical coil arrangement
CA135,582A CA946831A (en) 1971-03-08 1972-02-25 Sodium heated helical coil arrangement
IT12516/72A IT957300B (it) 1971-03-08 1972-03-07 Surriscaldatore di vapore a serpen tine elicoidali riscaldato a sodio liquido con mezzi per sostenere le serpentine e mezzi per scari care i prodotti di un eventuale reazione sodio acqua
CH332672A CH546377A (de) 1971-03-08 1972-03-07 Mit fluessigem natrium beheizter dampfueberhitzer.
FR7208019A FR2129508A5 (enrdf_load_stackoverflow) 1971-03-08 1972-03-08
ES400538A ES400538A1 (es) 1971-03-08 1972-03-08 Un dispositivo recalentador calentado por sodio liquido.
GB1086772A GB1387057A (en) 1971-03-08 1972-03-08 Sodium-heated helical coil superheater
NL7203065A NL7203065A (enrdf_load_stackoverflow) 1971-03-08 1972-03-08
JP2324072A JPS555001B1 (enrdf_load_stackoverflow) 1971-03-08 1972-03-08
DE19722211190 DE2211190A1 (de) 1971-03-08 1972-03-08 Natriumbeheizter Überhitzer
ZA721574A ZA721574B (en) 1971-03-08 1972-03-08 Sodium-heated helical coil superheater
SE02965/72A SE367722B (enrdf_load_stackoverflow) 1971-03-08 1972-03-08
BE780362A BE780362A (fr) 1971-03-08 1972-03-08 Surchauffeur a serpentins helicoidaux chauffe au sodium
DK106572AA DK131439B (da) 1971-03-08 1972-03-08 Natriumopvarmet dampgenerator.
AU39743/72A AU453587B2 (en) 1971-03-08 1972-03-08 Sodium-heated helical coil arrangement
DK89274A DK132718C (da) 1971-03-08 1974-02-19 Natriumopvarmet dampgenerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00121665A US3812825A (en) 1971-03-08 1971-03-08 Sodium heated helical coil arrangement

Publications (1)

Publication Number Publication Date
US3812825A true US3812825A (en) 1974-05-28

Family

ID=22398083

Family Applications (1)

Application Number Title Priority Date Filing Date
US00121665A Expired - Lifetime US3812825A (en) 1971-03-08 1971-03-08 Sodium heated helical coil arrangement

Country Status (15)

Country Link
US (1) US3812825A (enrdf_load_stackoverflow)
JP (1) JPS555001B1 (enrdf_load_stackoverflow)
AU (1) AU453587B2 (enrdf_load_stackoverflow)
BE (1) BE780362A (enrdf_load_stackoverflow)
CA (1) CA946831A (enrdf_load_stackoverflow)
CH (1) CH546377A (enrdf_load_stackoverflow)
DE (1) DE2211190A1 (enrdf_load_stackoverflow)
DK (1) DK131439B (enrdf_load_stackoverflow)
ES (1) ES400538A1 (enrdf_load_stackoverflow)
FR (1) FR2129508A5 (enrdf_load_stackoverflow)
GB (1) GB1387057A (enrdf_load_stackoverflow)
IT (1) IT957300B (enrdf_load_stackoverflow)
NL (1) NL7203065A (enrdf_load_stackoverflow)
SE (1) SE367722B (enrdf_load_stackoverflow)
ZA (1) ZA721574B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644906A (en) * 1985-05-09 1987-02-24 Stone & Webster Engineering Corp. Double tube helical coil steam generator
US4737337A (en) * 1985-05-09 1988-04-12 Stone & Webster Engineering Corporation Nuclear reactor having double tube helical coil heat exchanger
US4753773A (en) * 1985-05-09 1988-06-28 Stone & Webster Engineering Corporation Double tube steam generator
US5307802A (en) * 1993-09-13 1994-05-03 Placek Edward A High efficiency steam generator
US6189605B1 (en) 1998-01-26 2001-02-20 Standard Fasel-Lentjes B.V. Device and method for cooling gas

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048831B1 (en) * 1980-09-25 1984-11-28 Nepon Company, Ltd. A heat exchange apparatus and a warmer apparatus
FR2509433A1 (fr) * 1981-07-08 1983-01-14 Electricite De France Dispositif de detection de fuites dans un generateur de vapeur
FR2509841B1 (fr) * 1981-07-17 1986-07-18 Creusot Loire Perfectionnement aux generateurs de vapeur du type sodium-eau
FR2518707A1 (fr) * 1981-12-18 1983-06-24 Novatome Dispositif de production de vapeur par echange de chaleur entre un metal liquide caloporteur et de l'eau alimentaire
FR2519462A1 (fr) * 1981-12-31 1983-07-08 Novatome Dispositif d'evacuation de secours de la chaleur dissipee par un reacteur nucleaire a neutrons rapides a l'arret

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187807A (en) * 1961-05-03 1965-06-08 Babcock & Wilcox Co Heat exchanger
US3245464A (en) * 1963-02-28 1966-04-12 Babcock & Wilcox Co Liquid metal heated vapor generator
US3279439A (en) * 1964-06-05 1966-10-18 Babcock & Wilcox Co Vapor generating superheating and reheating unit
US3395676A (en) * 1966-07-05 1968-08-06 Babcock & Wilcox Co Vapor generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187807A (en) * 1961-05-03 1965-06-08 Babcock & Wilcox Co Heat exchanger
US3245464A (en) * 1963-02-28 1966-04-12 Babcock & Wilcox Co Liquid metal heated vapor generator
US3279439A (en) * 1964-06-05 1966-10-18 Babcock & Wilcox Co Vapor generating superheating and reheating unit
US3395676A (en) * 1966-07-05 1968-08-06 Babcock & Wilcox Co Vapor generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644906A (en) * 1985-05-09 1987-02-24 Stone & Webster Engineering Corp. Double tube helical coil steam generator
US4737337A (en) * 1985-05-09 1988-04-12 Stone & Webster Engineering Corporation Nuclear reactor having double tube helical coil heat exchanger
US4753773A (en) * 1985-05-09 1988-06-28 Stone & Webster Engineering Corporation Double tube steam generator
US5307802A (en) * 1993-09-13 1994-05-03 Placek Edward A High efficiency steam generator
US6189605B1 (en) 1998-01-26 2001-02-20 Standard Fasel-Lentjes B.V. Device and method for cooling gas

Also Published As

Publication number Publication date
DE2211190A1 (de) 1972-09-21
AU3974372A (en) 1973-09-13
CH546377A (de) 1974-02-28
BE780362A (fr) 1972-09-08
AU453587B2 (en) 1974-09-16
IT957300B (it) 1973-10-10
ZA721574B (en) 1972-11-29
DK131439B (da) 1975-07-14
JPS555001B1 (enrdf_load_stackoverflow) 1980-02-02
FR2129508A5 (enrdf_load_stackoverflow) 1972-10-27
SE367722B (enrdf_load_stackoverflow) 1974-06-04
ES400538A1 (es) 1975-02-01
CA946831A (en) 1974-05-07
GB1387057A (en) 1975-03-12
NL7203065A (enrdf_load_stackoverflow) 1972-09-12
DK131439C (enrdf_load_stackoverflow) 1975-12-01

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