US3254633A - Vapor generating and superheating unit - Google Patents

Vapor generating and superheating unit Download PDF

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Publication number
US3254633A
US3254633A US261636A US26163663A US3254633A US 3254633 A US3254633 A US 3254633A US 261636 A US261636 A US 261636A US 26163663 A US26163663 A US 26163663A US 3254633 A US3254633 A US 3254633A
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Prior art keywords
tubes
vapor generating
heating liquid
container
bank
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US261636A
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English (en)
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Johannes H Ammon
Theodore S Sprague
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Babcock and Wilcox Co
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Babcock and Wilcox Co
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Priority to US261636A priority Critical patent/US3254633A/en
Priority to BE644403D priority patent/BE644403A/xx
Priority to GB8559/64A priority patent/GB1060961A/en
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Publication of US3254633A publication Critical patent/US3254633A/en
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    • 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

Definitions

  • This invention relates to a vapor generating and superheating unit and more particularly, to such a unit employing a heated liquid metal, such as sodium, as the heating medium.
  • steam generating plants employing sodium as the heat source are designed to superheat steam in the final flow stage of a once-through boiler, i.e., after the water has passed through the economizer and steam generating tube sections which comprise multiple parallel flow paths.
  • Such an arrangement eliminates the need for a separate superheater unit.
  • such units are limited in the maximum temperature of the superheated steam they deliver to about 900 F. for reasons of economics associated with the selection of alloys available for superheater tube manufacture. It would be possible to use stainless steel tubes throughout and thereby provide for higher superheated steam temperatures, but this type of construction would make the cost of the unit uneconomic.
  • Another object of the present invention is to provide in the sodium flow path a by-pass around the superheater I Patented June 7, 1966 rately from the unit without'disturbing the other component.
  • Still another object of the invention is to provide an arrangement incorporating a steam reheat superheater within the same vessel as the boiler and superheater sections.
  • Additional objects of the invention are to provide a helically coiled tube arrangement wherein the tubes may be of substantially equal length though of diiferent coil diameters, to afiord a pressure vessel construction which will permit the separate removal of the superheater and boiler sections of the unit, and to supply a construction in which heated liquid metal will be prevented from contacting the walls of the pressure vessel.
  • the present invention provides a vapor generating and superheating unit comprising a vertically arranged pressure vessel incorporating a cylindrical container open at its upper end, and which is spaced inwardly from and in coaxial alignment with the vessel so that an annular space is provided between the two.
  • a sleeve having its lower end spaced above the bottom of the container.
  • a vertically extending conduit member situated concentrically about the vertical axis of the pressure vessel.
  • conduit member and the sleeve provides an annular passageway which contains a bank of vertically extending helically coiled vapor generating tubes disposed subjacent to a similar helically coiled vertically extending bank of superheater tubes.
  • a heating liquid such as liquid sodium
  • inlet means through the vessel shell and opening into the container below its top.
  • the level of the heating liquid is maintained below the top of the container and above the top of the superheater tubes.
  • a pair of by-pass valves for routing the heating liquid around the superheater tubes or the boiler tubes.
  • inlet and outlet chambers for these tubes are located in removable segments of the pressure vessel located above the top of the container. Further, inlet and outlet sections of the boiler tubes form a basket-like arrangement with the superheater tubes positioned within it so that the superheater tube bank can be removed without interfering with the adjacent boiler tubes.
  • FIG. 1 is a vertical sectional view of a vapor generating and superheating unit embodying the present invention
  • FIG. 2 is a top view of the unit shown in FIG. 1;
  • FIG. 3 is a vertical view partly in section of another embodiment of the present invention incorporating a reheater into the vapor generating and superheating unit;
  • FIG. 4 is a greatly enlarged detail view of the encircled section of FIG. 1;
  • FIG. 5 is a view taken along line 5-5 in FIG. 4.
  • the vapor generating and superheating unit illustrated in FIG. 1 has certain basic features which derive from the copending application Serial No. 802,880, filed March 30, 1959, now Patent No. 3,112,735, inventors John Schlichting and Theodore S. Sprague, having the same assignee as the present invention.
  • a vapor generating and superheating unit is disposed within a vertically extending cylindrical pressure vessel 12.
  • the vessel 12 is made up of a main member 14 having a curved lower head 16, a relatively short spool member 18 attached to the upper end of the main body member and an upper head member 20 attached to the top of the spool member and forming theupper closure for the vessel.
  • Flanges 22, 24 are located on the upper end of the main body member 14 and on the lower end of the spool member 18, respectively, for bolt connecting these two sections together.
  • the upper end of the spool member 18 and the lower end of the upper head member 20 have flanges 26, 28, respectively, which are also bolt connected.
  • a vertically extending container arranged in coaxial relationship with the vessel and extending from a point closely spaced above the lower head 16 to a plane coincident with the closure joint between the flanges 22, 24.
  • the container is open at its upper end 32 and is spaced about its vertical periphery closely from the pressure vessel forming therewith an annular space 34.
  • Spaced lugs 36 are located in the annular space 34 between the container and the vessel at various levels for maintaining the proper space relationship between the two elements.
  • a vertically arranged concentrically disposed sleeve 38 which acts as a shroud. At its lower end the sleeve is spaced above the bottom of the container while its upper end terminates just above the top of the container.
  • the sleeve has a smaller diameter for its lower half 40 than for its upper half 42 thereby providing a ring-shaped channel 44 of greater width about the lower part of the sleeve than about its upper part.
  • a number of vertically spaced rings 45 are positioned in the channel 44 for separating the sleeve and the container. These rings 45 are attached to the sleeve but are not connected to the container. The rings are slotted (not shown) to provide openings for tubes to pass through them.
  • conduit member 46 Disposed inwardly from the sleeve is a centrally arranged vertically positioned conduit member 46 which extends from the bottom of the container 30 to the lower end of the upper head member 20. In combination with the sleeve 38 the conduit member 46 forms an annular passageway 46A.
  • a heating liquid inlet 47 which extends into the interior of the pressure vessel and connects to a ring-shaped distribution header 48.
  • a plurality of heating liquid outlets 50 which depend into the container so that the discharge openings 52 are located a substantial distance below the open top of the container.
  • Each of the heating liquid outlets 50 has walls which diverge from the header 48 to the discharge openings 52 thereby decreasing the velocity of the heating liquid as it enters the container and reducing the possibility of turbulence at that point.
  • the outlets 50 are uniformly distributed within the container so that they can evenly deliver the heating liquid to the horizontal cross section of the container.
  • a heating liquid level 53 Within the container 30 between its open top 32 and the discharge openings 52 from the heating liquid outlets 50 is a heating liquid level 53.
  • a heating liquid outlet duct 52A Centrally located in the lower end of the container is a heating liquid outlet duct 52A which is connected to the container wall and arranged to form a thermal sleeve construction with the adjacent wall of the lower head 16 of the pressure vessel.
  • headers 54 In the spool member 18 four cylindrically-shaped headers 54 are formed having a tube sheet 56 coextensive with the wall of the spool member and a removable header closure plate 58 closing the opposite end of the header. Two of these headers 54 act as inlet chambers 60 for the vaporizable fluid in the unit, and the other two been vaporized.
  • vaporizable fluid downcomer tubes 64 pass from the inlet chambers 60 downwardly through the annular channel 44. At the lower end of the sleeve these downcomer tubes are bent radially inward and then upward into a bank of helically coiled vapor generating tubes 66 which are located within the annular passageway 46A.
  • each tube irrespective of its coil diameter will be of substantially equal length for its path through the bank of vapor generating tubes.
  • the upper end of the bank of vapor generating tubes 66 coincides with the top of the lower portion 40 of the sleeve 38.
  • the riser tubes 67 are again bent radially outward to the interior surface of the upper portion 42 of the sleeve 38 and then extend upwardly into the tube sheets 56 of the outlet chambers 62.
  • a vapor connection pipe 68 extends upwardly to a vertically positioned vapor inlet chamber 70 located in the upper head member 20 of the pressure vessel.
  • vapor inlet chambers 78 formed of cylindricallyshaped walls attached by means of a thermal sleeve arrangement 72 to the upper head member.
  • the lower end of the chambers are closed by tube sheets 74 and the opposed upper ends have cover plates 76 closing off the inlet chambers.
  • Constructed similarly to the inlet chambers and also positioned in the upper head member are a pair of superheated vapor outlet chambers 78'.
  • Vapor downcomer tubes 80 are connected to the tube sheet 74 and extend vertically downward into the container 20 being closely spaced about the interior of the upper half 42 of the sleeve 38 immediately inward of the riser tubes 67 which extend from the bank of vapor enerating tubes to the outlet chambers 62.
  • the vapor inlet tubes 88 extend downwardly to a point just above the bank of vapor generating tubes 66 and then extend radially inward being formed into a bank of helically coiled superheating tubes 82 situated in the annular passageway 46A above the bank of vapor generating tubes 66.
  • the height of the bank of su perheating tubes is substantially less than that of the bank of vapor generating tubes and extends upwardly to a plane spaced subjacent to the discharge opening 52 from the heating liquid outlets 56.
  • the conduit member 46 is divided into an upper section 86 and a lower section 87.
  • the upper section 86 is suspended from the upper 'head member 20 by hanger bars 88 and terminates between the banks of vapor generating and superheating tubes.
  • the upper section fits into a recess 89 formed in the inner surface of a main support member 99, see FIG. 4, form.- ing a sliding joint therewith.
  • the lower section 87 it is attached to the main support member 90, while at its lower end, it fits into a recess 92 in the lower end of the container at the heating liquid outlet connection 52A.
  • valve 94A In the upper section 8-6 of the conduit member are a pair of vertically spaced cylindrically-shaped sliding valves 94A, 94B.
  • Valve 94A is located immediately above the bank of superheater tubes, and valve 94B is located immediately below the same bank.
  • These two Valves are connected to a vertically positioned shaft 96 which extends upwardly through the upper member 20 of the pressure vessel and is located within a blowout nozzle 98.
  • Attached to the upper end of the shaft is a rack and pinion gear 100 by which the valves 94A and 94B may be positioned between the :full open and full closed positions.
  • a heating liquid outlet sliding valve 102 which is disposed at the entrance to the heating liquid outlet 52A.
  • another sliding valve 104 which is disposed immediately above the top of the bank of vapor generating tubes. Both of the valves 102 and 104 are connected to a vertically disposed shaft 106 which extends upwardly within the shaft 96 and is connected to another part of the rack and pinion gear 100 for moving these valves into the desired position.
  • the valves 94A, 94B are used to by-pass some portion of the heating fluid flowing through the container about the superheating tubes 82 so that the vapor temperature from the superheater tubes may be regulated. Since these valves can be moved into a number of positions between their fully opened and closed dispositions, it is possible to achieve a wide'range of outlet temperatures for the superheated vapor issuing from the bank of superheated tubes 82. As shown in FIGS. 1 and '4 the sliding valves are in a lower or fully closed position.
  • a baflie 107 is located within the conduit member at the bottom of the valve 94B for directing the flow of the lay-passed heating liquid outwardly through valve 94B and for preventing its continued passage downwardly through the conduit member. 108 hinged about their lower faces to the upper end of the valve 104.
  • these leaves will be in a down position 108A, however, if a gas pressure builds up in the lower end of the vessel, the gas can escape up through the conduit member by forcing the leaves up into an open position 108B. Once the gas escapes, the leaves will reseat closing the conduit member against any downward flow of heating liquid.
  • Valves 102 and 104 are employed for by-passiug the heating liquid about the vapor generating tubes. Ordinarily all of the heating liquid passing through the container flows over the vapor generating tubes. However, if some emergency arises which prevents the Vaporizable fluid passing through the vapor generating tubes from carrying off the heat from the heating liquid, then thevalve 104 is opened and valve 102 is closed so that the This baflie is comprised of six leaves temperature materials which might otherwise be required. Additionally, the inert gas also acts to pressurize the heating liquid for maintaining the position of its level and further, it prevents any air from entering the vessel and contacting the heating liquid which might cause serious damage, depending on the nature of the heating liquid.
  • the inner surfaces of the spool member 18 and the upper head member 20 are covered with an internal insulation 112 which protects the inner surfaces of both of these structures from the high inert gas temperatures in the vessel.
  • connection pipes 68 which extend between the vapor outlet chamber 62 and the vapor inlet chamber 70. After heating liquid bypasses the bank of vapor generating tubes completely flowing downwardly through the lower portion 87 of the conduit member and out through the heating liquid outlet.
  • an inlet connection (not shown) which delivers inert gas into the pressure vessel.
  • the inert gas fills the pressure vessel in the space above the level of the heating liquid within the container and the vapor connection pipes 68 have been severed, the inner shaft 106 disconnected from its drive mechanism and the bolts removed from the flanges 26 and 28, the bank of superheater tubes can be removed as a unit with the upper heat member and the upper portion of the conduit member and 'hollow shaft 96.
  • the superheater tubes along with the connections to and from their inlet and outlet chambers are located radially inward from any of the downcomer and riser connections to the vapor generating tubes so that there is no interference when they are removed from the pressure vessel.
  • the superheater tubes are supported from the upper head member 20 by means of a combination of radially extending horizontal supports 114 which extend between the wall of the upper head member and the hanger bars 88. Depending from these members 114 are a plurality of hanger bars 116 which in turn carry a ring support 118 located immediately above the bank of superheater tubes.
  • Tube support bars (not shown) hang downwardly from the ring support 118 to hold the helically coiled tubes in the superheater bank.
  • Serial No. 802,880 now Patent No. 3,112,735, and Serial No. 249,- 152, which has the same assignee as the present application for an illustration of the type of tube support referred to.
  • the vapor generating tubes can in turn be removed by disconnecting the spool member 18 from the main body of the pressure vessel. Since the vapor generating tubes are attached to the inlet and outlet chambers lo,- cated in the spool member they can be removed from the vessel as a unit with the sleeve 38 and the lower section 87 of the conduit member which is attached to the main support member 90.
  • the vapor generating tubes are supported in the same manner as described above and more fully illustrated in the referenced copending appli cations.
  • FIG. 3 It is also desirable to combine one or more reheaters in the same vessel with the superheater and vapor generating tubes, in such an arrangement as is shown in FIG. 3.
  • the general arrangement in FIG. 3 is similar to that shown in FIG. 1, and for that reason, it is not considered that a detail description or illustration is required.
  • a pressure vessel 120 comprises a main body member 122, a lower and an upper spool member 124 and 126 respectively arranged above the main body member with an upper head member 128 forming the closure for the vessel.
  • a container 130 open at its upper end and spaced inwardly from the vessel wall.
  • sleeves 132, 134 and 136 similar in construction to that shown in FIG. 1.
  • Sleeve 132 is connected by means of a lug 138 to the lower spool member 124 while sleeves 134 and 136 are connected to the upper spool member 126 by means of lugs 140, 142, respectively.
  • a helically coiled bank of vapor generating tubes 144 disposed below a similarly coiled bank of reheater tubes 146.
  • a bank of helically coiled superheater tubes 148 are connected at their inlet and outlet ends into chambers 156, 152, 154 disposed respectively in the spool member 124 for the vapor generating tubes, in the spool member 126 for the reheater tubes and in the upper head member 128 for the superheater tubes.
  • the heating liquid feed system 156 is somewhat different from that shown in FIG. 1 since it is divided to provide flow control of the heating liquid over both the superheater and reheater tubes.
  • Heating liquid inlet line 153 is divided by a baflie 159 into a superheater feed line 164 and a reheater feed line 162, each line having its own valves 164, 166, respectively.
  • feed line 160 the heating liquid enters an annular-shaped distribution header 168 which delivers the heating liquid into a number of heating liquid outlets 170 similar to those described in FIG. 1.
  • a heating liquid level 172 is formed within the sleeve 136 above both the bank of superheater tubes and the discharge opening 174 from the outlets 170.
  • the heating liquid in the reheater feed line 162 branches off from the inlet line 158 and enters a ring-shaped distribution header 176. From the header 176 the heating liquid flows downwardly through the outlets 178 which are positioned in the space between the sleeves 134 and 136 for supplying the heating liquid to the bank of reheater tubes 146 which are located in the lower enlarged spac 180 between the same sleeve.
  • the banks of superheater and reheater tubes each receive a separate supply of heating liquid so that individual control of the superheat and reheat temperatures may be attained.
  • the two separate streams of heating liquid flow together and then pass downwardly over the bank of vapor generating tubes and then on out of the container 130 through outlet 182.
  • vaporizable fluid feed enters the downcomer tube 184 from the inlet chamber 150 (I) and passes downwardly in the space between the container 130 and the sleeve 132. Below the bottom of sleeve 132 the tubes are bent into the bank of vapor generating tubes 144. Vapor outlet tubes 186 extend from the top of the vapor generating tubes 144 in the space between sleeves 132 and 134 and are connected to the outlet chamber 150 (O).
  • Vapor to be reheated enters the unit through the inlet chamber 152 (I) and is carried from there to the bottom of the reheater tubes 148 by means of inlet tubes 194 which are located between sleeves 134 and 136. From the top of the reheater tubes outlet pipes 196 carry the reheated vapor upwardly between th sleeves 134 and 136 and then into the outlet chamber 152 (I) from where it is transported to a point of use (not shown).
  • the various banks of tubes and their inlet and outlet connections are disposed in what may be characterized as a basket arrangement, one within the other, so that they may be removed individually from the vessel without one interfering with the other.
  • the only connection between the various banks is the vapor pipe 188 running between the outlet chamber 150 (0) from the vapor generating tubes to the inlet chamber 154 (I) to the superheating tubes. Additionally, they are, in effect, connected by means of the flanges and the various members which make up the overall pressure vessel.
  • the various banks of tubes may be sequentially removed from the vessel in this fashion; first, Withthe upper head member 128, the bank of superheater tubes 148; second, with the upper spool member 126, the bank of reheater tubes 146 and the sleeves 134 and 136; and third, with the lower spool member 124, the bank of vapor generating tubes 144 and the sleeve 132. This leaves the main body of the pressure vessel and the container undisturbed.
  • the pressure vessel contains a conduit member 198 which provides the inner boundary for an annular passageway 26%) within which the banks of vapor generating 144 and superheating tubes 148 are located.
  • the conduit member 198 contains a pair of valves 202 for by-passing the heating liquid about the superheater tubes and a pair of valves 204 for by-passing the heating liquid about the vapor generating tubes.
  • the conduit member contains a baflle 206 which prevents the heating liquid, which has by-passed the superheater tubes, from flowing down through the conduit member and out of the vessel.
  • inlet and outlet chambers for the various tube arrangements each has a covered plate through which access may be gained to the tube ends for any maintenance which may be required upon them.
  • the preferred heating liquid would be sodium and the vaporizable fluid would be water. It is possible, however, that other metals having similar characteristics to that of sodium may be used as the heating liquid while the vaporizable fluid is not necessarily restricted to water.
  • this invention provides a unit which may be simply assembled and dismantled and which permits the most economical use of tube metals in view of the temperature conditions desired from the unit.
  • vapor generating and superheating unit wherein a heating liquid passes in indirect heat transfer relationship with a vaporizable fluid comprising:
  • A. a vertically arranged pressure vessel comprising a number of mechanically connected serially removable sections forming its upper portion and including a removable head member and at least one separately removable circumferentially extending wall member,
  • heating liquid inlet means attached to one of the removable sections of said vessel and having-the discharge end thereof located within and below the open end of said container, and a heating liquid level formed within and below the open end of said container,
  • F. wall means attached to one of said removable sections and forming an inlet chamber and an outlet chamber for said vapor generating tubes
  • G wall means attached to a different one of said removable sections and forming an inlet chamber and an outlet chamber for said superheater tubes, whereby the banks of vapor generating and superheater tubes may be individually removed from the vessel with the wall means forming their respective inlet and outlet chambers and the removable section to which the wall means are attached.
  • a vapor generating and superheating unit as set forth in claim 1 wherein a bank of vertically extending reheater tubes are disposed in said container below the liquid level therein in vertical alignment with said bank of vapor generating tubes.
  • a vapor generating and superheating unit as set forth in claim 1 wherein a vertically disposed sleeve is located within and spaced from said container with its lower end situated above the bottom of the container, and a centrally arranged vertically extending conduit member is positioned within said pressure vessel and spaced inwardly from said sleeve forming an annular passageway therebetween within said container, said annular passageway containing said banks of vapor generating and superheating tubes.
  • a vapor generating and superheating unit as set forth in claim 1 wherein heating liquid by-pass means are disposed within said container whereby the heating liquid flowing therethrough may be regulably and selectively routed about said vapor generating and superheating tubes.
  • a vapor generating and superheating unit as set forth in claim 5 wherein said heating liquid by-pass means comprises a pair of vertically spaced valves positioned in said conduit member with one valve located immediately above and the other located immediately below said bank of superheating tubes, and means connected to said valves for selectively arranging them as a unit between fully closed and fully opened positions for regulably routing said heating liquid about said bank of superheater tubes to control the final temperature to which the vapor passing therethrough is superheated.
  • a vapor generating and superheating unit as set forth in'claim 6 wherein said heating liquid by-pass means comprises a second pair of vertically spaced valves positioned in said conduit member with one valve disposed immediately above said bank .of vapor generating tubes and the other valve disposed below said bank of vapor generating tubes, and means connected to said valves for selectively operating them as a unit whereby one valve is always in a fully closed position and the other valve is always in a fully opened position for alternatively discharging the heating liquid from said container and for routing the heating liquid about said bank of vapor generating tubes.
  • a vapor generating and superheating unit as set forth in claim 9 where-in a vapor pipe is connected to and extends between the vapor outlet chamber in said wall member and the superheating inlet chamber in said head member.
  • a vapor generating and superheating unit wherein F. wall means attached to a different one of said rea heating fluid passes in indirect heat transfer relationship movable sections and positioned above and in comwith a vaporizable fluid comprising: munication with said bank of superheating tubes
  • A. a vertically arranged pressure vessel comprising a for forming an inlet chamber and an outlet chamber number of mechanically connected serially remova- 5 for the superheating tubes said removable sections ble sections forming its upper portion and including in the same vertical relationship as the banks of a removable head member and at least one separately removable circumferentially extending wall member,

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US261636A 1963-02-28 1963-02-28 Vapor generating and superheating unit Expired - Lifetime US3254633A (en)

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US261636A US3254633A (en) 1963-02-28 1963-02-28 Vapor generating and superheating unit
BE644403D BE644403A (cs) 1963-02-28 1964-02-27
GB8559/64A GB1060961A (en) 1963-02-28 1964-02-28 Improvements in heat exchangers adapted for vapour generation and superheating

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397114A (en) * 1966-07-05 1968-08-13 Babcock & Wilcox Ltd Integral nuclear reactor-heat exchanger arrangement
US3442760A (en) * 1965-11-02 1969-05-06 Atomic Energy Authority Uk Integral nuclear reactor with coolant penetrations formed in a separable module of the reactor vessel
US3742915A (en) * 1971-11-03 1973-07-03 Atomic Power Dev Ass Inc Heat exchangers
US3798909A (en) * 1970-04-27 1974-03-26 Gulf General Atomic Inc Power generating system
US3812824A (en) * 1971-03-04 1974-05-28 Foster Wheeler Corp Sodium-heated steam generator
US3848572A (en) * 1971-08-09 1974-11-19 Westinghouse Electric Corp Steam generator
US3859964A (en) * 1972-10-16 1975-01-14 Mitsui Shipbuilding Eng Once through boiler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB803382A (en) * 1955-11-11 1958-10-22 Babcock & Wilcox Ltd Improvements in vapour generators
US2865827A (en) * 1955-05-27 1958-12-23 Orrington E Dwyer Power generation from liquid metal nuclear fuel
US3018764A (en) * 1957-06-27 1962-01-30 Huet Andre Marine boiler exhibiting small variations of level

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865827A (en) * 1955-05-27 1958-12-23 Orrington E Dwyer Power generation from liquid metal nuclear fuel
GB803382A (en) * 1955-11-11 1958-10-22 Babcock & Wilcox Ltd Improvements in vapour generators
US3018764A (en) * 1957-06-27 1962-01-30 Huet Andre Marine boiler exhibiting small variations of level

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442760A (en) * 1965-11-02 1969-05-06 Atomic Energy Authority Uk Integral nuclear reactor with coolant penetrations formed in a separable module of the reactor vessel
US3397114A (en) * 1966-07-05 1968-08-13 Babcock & Wilcox Ltd Integral nuclear reactor-heat exchanger arrangement
US3798909A (en) * 1970-04-27 1974-03-26 Gulf General Atomic Inc Power generating system
US3812824A (en) * 1971-03-04 1974-05-28 Foster Wheeler Corp Sodium-heated steam generator
US3848572A (en) * 1971-08-09 1974-11-19 Westinghouse Electric Corp Steam generator
US3742915A (en) * 1971-11-03 1973-07-03 Atomic Power Dev Ass Inc Heat exchangers
US3859964A (en) * 1972-10-16 1975-01-14 Mitsui Shipbuilding Eng Once through boiler

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GB1060961A (en) 1967-03-08

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