US3004529A - Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator - Google Patents

Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator Download PDF

Info

Publication number
US3004529A
US3004529A US569920A US56992056A US3004529A US 3004529 A US3004529 A US 3004529A US 569920 A US569920 A US 569920A US 56992056 A US56992056 A US 56992056A US 3004529 A US3004529 A US 3004529A
Authority
US
United States
Prior art keywords
tubes
group
tube
temperature
flow
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
US569920A
Other languages
English (en)
Inventor
John I Argersinger
Herbert M Lowenstein
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.)
COMB EUGINEERING Inc
COMBUSTION EUGINEERING Inc
Original Assignee
COMB EUGINEERING 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
Priority to BE555535D priority Critical patent/BE555535A/xx
Application filed by COMB EUGINEERING Inc filed Critical COMB EUGINEERING Inc
Priority to US569920A priority patent/US3004529A/en
Priority to CH354457D priority patent/CH354457A/de
Priority to DE1957S0052290 priority patent/DE1138796B/de
Priority to FR1172801D priority patent/FR1172801A/fr
Priority to GB7325/57A priority patent/GB806561A/en
Application granted granted Critical
Publication of US3004529A publication Critical patent/US3004529A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
    • F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
    • F22B35/102—Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating with fixed point of final state of complete evaporation, e.g. in a steam-water separator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups

Definitions

  • the present invention relates to forced flow tubular vapor generators in which the heating surface is formed of a plurality of tubes through which the working medium flows, these tubes being arranged for parallel flow.
  • the invention relates to a steam generator in which this parallel relationship exists at least in the zones of vaporization and the beginning of superheating of the steam.
  • the invention relates to a generator of the above character which comprises a device which regulates all or a part of the liquid working medium supply, or the fuel supply, the regulating devicebeing responsive to the temperature of the working medium passing from the vaporization zone into the superheating zone.
  • a temperature sensitive device is associated with only one of-a plurality or group of tubes, several such groups comprising the heating surface of the generator, all tubes or'group of tubes being arranged parallel with respect to fluid flow therethrough.
  • Each temperature sensitive device is operatively connected with a selector which transmits only those impulses to the device for regulating the working medium supply or fuel supply which come from the temperature sensitive device associated with the tube of highest temperature.
  • flow controlling devices are provided for each tube to assure that the temperature and/or quality of each tube in a group as nearly as possible conforms to the temperature and/or quality of the other tubes and of the one tube in each group that is associated with the controlling temperature sensitive device.
  • FIGURE 1 is a diagrammatic representation of a portion of the tubular heating surface of a forced flow steam 3,004,529 Patented Oct. 17., 1961 generator at the end of the water heating zone, at the evaporation zone and the beginning of the superheating zone, and showing control of the feed water supply in accordance with the invention.
  • FIGURE 2 is a diagrammatic representation of one of the elements of the inventive control system.
  • FIGURE 3 is a diagrammatic illustration of a modified system according to the invention when applied to the control of the fuel supply.
  • FIGURE 4 is a cross section throughthe tube ends and showing individual flow controlling devices associated therewith.
  • a steam generator is shown diagrammatically representing three parallel connected groups of tubes A, B and C in the end zone of Water heating, the zone of vaporization and the beginning of superheating.
  • Each group A, B and C comprises four parallel connected tubes 1, 2, 3 and 4; 5, 6, 7 and 8; 9, 10, 11 and 12, respectively.
  • the outlet end of each tube of groups A, B and C is connected into outlet header 20.
  • the inletends of tubes 1, 2 and 3 originate in subinlet header 28; those of tubes 5, 6 and 7 in sub-inlet header 30; and those of tubes 9, 10 and 11 in-sub-inlet header 32.
  • each group A, B and C namely 4, 8 and 12 respectively, by-passes the sub-inlet header associated with the group and is connected directly to main inlet header 34.
  • Sub-inlet headers 28, 30 and 32 are also connected to main inlet header 34 by means of conduits 36, 38 and 40 respectively.
  • the working medium such as water flows from a feed water source (not shown) through feed pipe 42 into header 34.
  • a flow control device such as valve 44 is installed in pipe 42 to regulate the amount of feed water fed to header 34.
  • Pipes 36, 38 and 40 distribute the water to sub-headers 28, 30 and 32 respectively.
  • tubes 4, 8 and 12 receive water directly from header 38.
  • Flow control means such as valves 46, 48 and 50 are provided in pipes 36, 38 and 40; and valves 52, 54 and 56 in tubes 4, 8 and 12 respectively.
  • Each of the tubes 4,8 and 12 of the groups A, B and C respectively has associated therewith a temperature sensitive impulse transmitter 68, 70 and 72.
  • Each transmitter is connected through an impulse conduit with a mechanism 74, which on its part influences the regulator through conduit 76.
  • the mechanism is shown in diagrammatic form in FIG. 2. It has three bellows 78, 79 and 80, or other equivalent devices. Each of these is operatively connected with one of the impulse transmitters 68, 70 and 72 (FIG. 1). These bellows expand and contract respectively with rising or falling temperatures and are arranged so that the moveable end of only the bellows connected to the impulse transmitter which is at the time at the highest temperature comes into con-tact with the cross bar 82 of a lever 83 mounted in bearing 84.
  • An adjustable rod 85 connects the other end of the lever 83 with a conventional hydraulic control valve 86, which controls the pressure in the impulse transmitting conduit 76 thereby controlling valve 44 through the pressure regulator 75
  • the lever 83 is biased toward the bellows by springs 87.
  • the cross bar 82 always bears on the bellows which is most fully extended.
  • the cross bar 82 is thus always influenced only by the bellows, in this instance 80, the impulse transmitter of which is under the influence of the highest temperature.
  • the impulse transmitter for the other bellows (78, 79) are influenced by lower temperatures. These other bellows therefore cannot come into contact with cross bar 82 and the impulse transmitters associated therewith can have no efiect on regulation of valve 44 as long as this lower temperature is maintained.
  • Tubes 1, 2, 3 of group A; tubes 5, 6, 7 of group B; and tubes 9, 10 and 11 of group C are equipped with orifices 89 which may be permanently installed or be exchangeable.
  • FIG. 4 shows three such tubes 1, 2, 3) the ends of which are provided with orifices 89. These orifices make it possible to proportion the water flow through these tubes in each group during the design stage so that the flow to each of the tubes will be equal or will be proportional to the heat absorbed by each tube.
  • the fourth tube (4, 8, 12)'of each group which is equipped with a temperature sensitive device (68, 70, 72) will also be designed, with or without an orifice 89, so that it will receive a water flow proportional to its heat abso'iption, and will produce steam at the outlet having the same temperature and/ or quality as the steam produced bytes remaining tubes of the respective group.
  • FIG. 3 shows the same arrangement of tube groups A, B and C as FIG. 1.
  • the mechanism 74 has a valve 86 which controls the fuel supply instead of the feed water supply as shown in FIG. 1.
  • This valve is installed in the fuel line 93 supplying fuel to a burner :94 from a source not shown.
  • the required air for combustio'n is supplied through conduit 95 also from a source not shown.
  • the control temperature is set at the desired value. Also one of the valves 52, 54 and 56 can be adjusted so that only one of the control tubes 4, 8 or 12, that which has the highest temperature, will discharge slightly superheated steam into the respective header 14, T6 or 18, the other tubes discharging slightly wet steam into these headers.
  • the feed water supply through pipe 4-2 or the fuel supply through pipe 03 is so proportioned that at first superheated steam is .generated in tube groups A, B and C.
  • Valves '46, 48 and 50, and 52, 54 and 56 are then so adjusted that the degree of superheat in the steam in each tube (1 through 12) entering header is approximately the same. This is indicated by temperature readings obtained through a thermocouple installed in each tube end. Assuming now that the degree of superheat, to which all the tubes have been adjustedflin this manner is 10 (above saturated steam temperature). Then the degree of superheat can be raised in one control tube, such as tube 12 for example, to 100 F. above saturated steam temperature by restricting the flow through valve 56.
  • the unit is now placed on automatic control. This means that the temperature of the steam leaving control tube '12 (25 F. above saturation point) is maintained within narrow limits by automatic control of either the feed water supply through valve 44, or the fuel supply through valve 92. The quality of the steam leaving the remaining tubes is thereby maintained at the desired value.
  • one of the control tubes such as 12 discharges andmaintains superheated steam having a temperature of 25 F. above saturated temperature
  • one or all of the other control tubes such as 4 and 8 may be so adjusted by means of valves 54 and 52 respectively that they discharge steam at a lower temperature such as 15 F. above saturated temperature. Accordingly in case tube 12 overheats, one of the other tubes will take over control of the unit sooner. Obviously morethan two temperature levels could be established to suit special operating conditions.
  • tube 12 could be set to discharge steam at 25 F., tube 8 at 15 F. and tube 4 at 5 F. above saturated steam temperature.
  • the preferred embodiments of our invention have here been shown and described in connection with tubes and tube groups arranged in parallel relationship in the vaporization zone and in at least one other zone of variable temperature of the working medium namely the beginning of the superheating zone.
  • the heating zone immediately preceding the evaporation zone and commonly referred to as the water heating zone.
  • the temperature of a given quantity of the heated medium reflects the amount of heat absorbed.
  • a forced. flow vapor generator in which heat is exchanged between a lquid working medium and a gaseous working medium and having the heating surface thereof divided into tubes carrying said liquid medium and being exposed to said gaseous medium, said tubes being connected in parallel at least in the zones of vaporization and the beginning of superheating, said tubes being divided into groups; the combination of means for regulating the rate of flow of at least one of said mediums in a manner to change the outlet temperature of said liquid medium, a plurality of temperature sensitive impulse transmitters each associated with one tube of each group to the exclusion of the other tubes in each group, in the region of the transition from the vaporizing zone into the superheating zone; means connecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence said regulating means; a variable flow restricting device associated with, and individual to the said one tube of each group and having a flow restricting value to cause superheated vapor to issue from said one tube; a second variable flow restricting device common to and
  • a forced flow steam generator having the heating surface thereof divided into tubes connected in parallel at least in the zone of vaporization and having a device for regulating the feed water supply, said tubes being divided into groups; the combination of a variable flow restricting device associated with, and individual to one tube of each group to the exclusion of the other tubes in the same group to cause superheating in at least a portion of said one tube by restricting the flow therethrough, a temperature sensitive impulse transmitter associated with said one tube of each group to the exclusion of the other tubes in each group, in the said superheated region thereof; means connecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence the said regulating 'device; a second variable flow restricting device common to and associated with said other tubes of each group and having a restricting value to permit only saturated steam to issue from said other tubes; and a plurality of other fixed value flow restricting devices each individual to said other tubes of each group for fixing the quality of the saturated steam issuing from 'said other tubes.
  • said plurality of other fixed value flow restricting devices includes also fixed value flow restricting devices individual to said one tube of each group.
  • a forced flow steam generator having the heating surface thereof divided into tubes connected in parallel at least in the zones of vaporization and the beginning of superheating and having a device for regulating the feed water supply, said tubes being divided into groups, the combination of a plurality of temperature sensitive impulse transmitters each associated with one tube of each group to the exclusion of the other tubes in each group in the region of the transition from the vaporizing zone into the superheating zone, means connecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence the said regulating device, a variable flow restricting device associated with, and individual to the said one tube of each group and having a restricting value to cause only superheated steam to issue from said one tube, a second variable flow restricting device common to and associated with said other tubes of each group and having a restricting value to cause only saturated steam to issue from said other tubes, and a plurality of other fixed value flow restricting devices each individual to said other tubes of each group for fixing the quality of saturated steam issuing from said
  • a forced flow steam generator having the heatingsurface thereof divided into tubes connected in parallel in the zone of vaporization and in at least one zone of variable temperature, and having a device for regulating the feed water supply, said tubes being divided into groups, the combination of a plurality of temperature sensitive impulse transmitters each associated with one tube of each group to the exclusion of the other tubes in eachgroup, in the region of said variable temperature zone, meansconnecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to infiuence the said regulating device, a variable flow controlling device associated with and individual to the said one tube of each group to the exclusion of the other tubes of the same group and having a restricting value to permit only superheated steam to issue from said one tube, a second variable flow controlling device common to and associated with said other tubes of each group and having a restricting value to permit only saturated steam to issue from said other tubes; and a plurality of other fixed value flow controlling devices each individual to said other tubes of each group for fixing the quality of the saturated steam
  • said plurality of other fixed value flow controlling devices includes also fixed value flow controlling devices individual to said one tube of each group.
  • a forced 'fiow steam generator having the heating surface thereof divided into tubes connected in parallel in the zone of vaporization and in at least one zone of variable temperature; and having a device for regulating the feed water supply, said tubes being divided into groups; the combination of a variable flow controlling device associated with, and individual to one tube of each group to the exclusion of the other tubes in the same group to cause at least a portion thereof to fall within said variable temperature zone by controlling the flow through said tube; a temperature sensitive impulse transmit-ter associated with said one tube of each group to the exclusion of the other tubes in each group, in the said variable temperature region thereof; means connecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence the said regulating device; a second variable flow controlling device common to and associated with said other tubes of each group and having a restricting value to permit said other tubes only to operate in the zone of vaporization; and a plurality of other fixed value flow controlling devices each individual to said other tubes of each group for fixing the quality of the
  • said plurality of other fixed value flow controlling devices includes also fixed value flow controlling devices individual to said one tube of each group.
  • a heat exchanger for generating and superheating vapor from a fluid said heat exchanger having the heating surface thereof divided into tubes connected in parallel at least in the zones of vaporization and in at least one other zone of variable temperature, and having a device for regulating the fluid supply, said tubes being divided into groups; the combination of a plurality of temperature sensitive impulse transmitters each associated with one tube of each group to the exclusion of the other tubes of each group in the region of said variable temperature zone; means connecting-said transmitter to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence the said regulating device, means associated with, and individual to said one tube of each group to the exclusion of the other tubes in the same group to permit a flow therethrough diflerent from the flow through each of said other tubes so as to cause operation of said one tube of each group to fall within said variable temperature zone; a variable fiow restricting device common to and associated with said other tubes of each group and having a restricting value to permit said other tubes only to operate in said vapor
  • said tubes being divided into groups; the combination of means associated with, and individual to one tube of each group to the exclusion of the other tubes of the same group for altering the fluid flow therethrough so as to cause operation of said one tube to fall within said variable temperature zone; a temperature sensitive impulse transmitter associated with said one tube of each group to the exclusion of the other tubes of each group in the said variable temperature region thereof; means connecting said transmitters to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence the said fluid flow regulating device; a variable flow controlling device common to and associated with said other tubes of each group and having a restricting value to permit only saturated vapor to issue from said other tubes; and a plurality of other fixed value controlling devices each individual to said other tubes of each group for fixing the quality of vapor issuing from said othertubes.
  • said plurality of other fixed value flow controlling devices includes also fixed value flow controlling devices individual to said one tube of each group.
  • a heat exchanger for generating and superheating vapor from a fluid heat exchange medium by absorbing heat from a second heat exchange medium, said heat exchanged having the heating surface thereof divided into tubes carrying said fluid and being connected in parallel with respect to flow at least in the zones of vaporization and in at least one zone of variable temperature, and having a device for regulating the supply of at least one of said heat exchange mediums in a manner to change the exit temperature of said fluid, said tubes being divided into groups; the combination of a plurality of temperature sensitive impulse transmitter each associated with one tube of each group to the exclusion of the other tubes of each group, in the region of said variable temperature zone; means connecting said transmitter to a mechanism which permits only the impulse transmitter which at the moment is subjected to the highest temperature to influence said regulating device, means associated with, and individual to the said one tube of each group to the exclusion of the other tubes in the same group to alter the flow therethrough with respect'to the flow through each of said other tubes so as to cause operation of said one tube to fall within said variable-temp'erature
  • a forcedtlow steam generator having the heating surface thereof divided into tubes connected in parallel at least in the zones of vaporization and the beginning of superheating, said tubes being divided into groups; the combination of means for regulating the heat supply; a plurality of temperature sensitive impulse transmitters each associated with one tube of each group to the exclusion of the other tubes in each group in the region of the transition from the vaporizing zone into the superheating zone; means connecting said transmitters to a mechanism which permits only the impulse transmitter which at.
  • variable flow restricting device associated with, and individual to the said one tube of each group to the exclusion of the other tubes in the same group and having a restricting value to cause operation of said one tube within said superheating zone; a second variable flo-w restricting device common to and associated with said other tubes of each group and having a restricting value to permit only saturated steam to issue from said other tubes; and a plurality of other fixed value flow restricting devices each individual to said other tubes of each group for fixing the quality of saturated steam issuing from said other tubes.
  • said plurality of other fixed value flow restricting devices includes also fixed value flow restricting devices individual to said one tube of each group.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
US569920A 1956-03-06 1956-03-06 Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator Expired - Lifetime US3004529A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE555535D BE555535A (xx) 1956-03-06
US569920A US3004529A (en) 1956-03-06 1956-03-06 Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator
CH354457D CH354457A (de) 1956-03-06 1957-02-08 Zwangdurchlaufdampferzeuger
DE1957S0052290 DE1138796B (de) 1956-03-06 1957-02-11 Zwangdurchlaufdampferzeuger.
FR1172801D FR1172801A (fr) 1956-03-06 1957-03-04 Procédé et dispositif de réglage des générateurs de vapeur à circulation forcée
GB7325/57A GB806561A (en) 1956-03-06 1957-03-05 Forced flow, once through vapour generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US569920A US3004529A (en) 1956-03-06 1956-03-06 Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator

Publications (1)

Publication Number Publication Date
US3004529A true US3004529A (en) 1961-10-17

Family

ID=24277457

Family Applications (1)

Application Number Title Priority Date Filing Date
US569920A Expired - Lifetime US3004529A (en) 1956-03-06 1956-03-06 Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator

Country Status (6)

Country Link
US (1) US3004529A (xx)
BE (1) BE555535A (xx)
CH (1) CH354457A (xx)
DE (1) DE1138796B (xx)
FR (1) FR1172801A (xx)
GB (1) GB806561A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192908A (en) * 1962-11-15 1965-07-06 Combustion Eng Method and apparatus for controlling the temperature of vapor created in a vapor generator
US4526136A (en) * 1984-05-29 1985-07-02 The United States Of America As Represented By The United States Department Of Energy Control system for fluid heated steam generator
US5398644A (en) * 1991-09-13 1995-03-21 Abb Carbon Ab Temperature measurement at evaporator outlet
US20120234312A1 (en) * 2009-12-24 2012-09-20 Mitsubishi Heavy Industries, Ltd. Solar light heat receiver, and solar light collecting and heat receiving system
US20130180681A1 (en) * 2012-01-17 2013-07-18 Alstom Technology Ltd. Start-up system for a once-through horizontal evaporator
US9696098B2 (en) 2012-01-17 2017-07-04 General Electric Technology Gmbh Method and apparatus for connecting sections of a once-through horizontal evaporator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086504A (en) * 1958-02-26 1963-04-23 Sulzer Ag Method and apparatus for controlling a forced flow steam generator
NL226334A (xx) * 1958-03-10
CH378908A (de) * 1960-06-21 1964-06-30 Sulzer Ag Verfahren zum Betrieb eines Zwangdurchlaufdampferzeugers und Zwangdurchlaufdampferzeuger zum Durchführen des Verfahrens
NL296814A (xx) * 1963-07-04
US3261329A (en) * 1965-09-20 1966-07-19 Calumet & Hecla Method and apparatus for heating water in tubing without scaling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928010A (en) * 1931-02-07 1933-09-26 Sulzer Ag Water tube steam generator
DE731059C (de) * 1936-02-08 1943-02-01 Buckau Wolf Maschf R Dampferzeuger mit Zwangumlauf
GB663892A (en) * 1949-05-17 1951-12-27 La Mont Int Ass Ltd Improvements in and relating to forced recirculation tubular steam generators
GB698788A (en) * 1951-04-17 1953-10-21 Sulzer Ag Forced flow steam generators
US2800887A (en) * 1953-02-18 1957-07-30 Sulzer Ag Control system for forced flow vapor generators

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE654961C (de) * 1936-06-27 1938-01-05 Siemens Schuckertwerke Akt Ges Vorrichtung zum Regeln eines Zwangsstromroehrendampferzeugers
DE723414C (de) * 1940-02-15 1942-08-05 Siemens Ag Zwanglauf-Dampferzeuger
DE863658C (de) * 1946-05-07 1953-01-19 David Dalin Verfahren und Vorrichtung zur Waermeueberfuehrung von einem Waerme-erzeuger, z. B. einem Zwangumlaufkessel, zu Waermeverbrauchsstellen
NL85557C (xx) * 1951-04-17
DE911264C (de) * 1951-04-22 1954-05-13 Siemens Ag Zwangstromdampferzeuger mit Strahlungsheizflaeche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928010A (en) * 1931-02-07 1933-09-26 Sulzer Ag Water tube steam generator
DE731059C (de) * 1936-02-08 1943-02-01 Buckau Wolf Maschf R Dampferzeuger mit Zwangumlauf
GB663892A (en) * 1949-05-17 1951-12-27 La Mont Int Ass Ltd Improvements in and relating to forced recirculation tubular steam generators
GB698788A (en) * 1951-04-17 1953-10-21 Sulzer Ag Forced flow steam generators
US2800887A (en) * 1953-02-18 1957-07-30 Sulzer Ag Control system for forced flow vapor generators

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192908A (en) * 1962-11-15 1965-07-06 Combustion Eng Method and apparatus for controlling the temperature of vapor created in a vapor generator
US4526136A (en) * 1984-05-29 1985-07-02 The United States Of America As Represented By The United States Department Of Energy Control system for fluid heated steam generator
US5398644A (en) * 1991-09-13 1995-03-21 Abb Carbon Ab Temperature measurement at evaporator outlet
US20120234312A1 (en) * 2009-12-24 2012-09-20 Mitsubishi Heavy Industries, Ltd. Solar light heat receiver, and solar light collecting and heat receiving system
US10054335B2 (en) * 2009-12-24 2018-08-21 Mitsubishi Heavy Industries, Ltd. Solar light heat receiver, and solar light collecting and heat receiving system
US20130180681A1 (en) * 2012-01-17 2013-07-18 Alstom Technology Ltd. Start-up system for a once-through horizontal evaporator
US9151488B2 (en) * 2012-01-17 2015-10-06 Alstom Technology Ltd Start-up system for a once-through horizontal evaporator
US9696098B2 (en) 2012-01-17 2017-07-04 General Electric Technology Gmbh Method and apparatus for connecting sections of a once-through horizontal evaporator
US9746174B2 (en) 2012-01-17 2017-08-29 General Electric Technology Gmbh Flow control devices and methods for a once-through horizontal evaporator
US9989320B2 (en) 2012-01-17 2018-06-05 General Electric Technology Gmbh Tube and baffle arrangement in a once-through horizontal evaporator
US10274192B2 (en) 2012-01-17 2019-04-30 General Electric Technology Gmbh Tube arrangement in a once-through horizontal evaporator
EP2805109B1 (en) * 2012-01-17 2019-08-14 General Electric Technology GmbH Start-up system for a once-through horizontal evaporator

Also Published As

Publication number Publication date
FR1172801A (fr) 1959-02-16
GB806561A (en) 1958-12-31
CH354457A (de) 1961-05-31
DE1138796B (de) 1962-10-31
BE555535A (xx)

Similar Documents

Publication Publication Date Title
US3038453A (en) Apparatus and method for controlling a forced flow once-through steam generator
US3004529A (en) Method and apparatus for controlling fuel and/or feedwater flow in a oncethrough steam generator
US2800887A (en) Control system for forced flow vapor generators
US3771497A (en) Vapor generator control
US4080789A (en) Steam generator
US3452722A (en) Positively operated steam generator
US3040719A (en) Vapor generating and superheating systems
US2319223A (en) Method and apparatus for temperature regulation
US3135245A (en) Vapor generator
US2526843A (en) Temperature control system
US3164135A (en) Monotube boiler feedwater and steam temperature control
US2527539A (en) Vapor generating apparatus with automatic fuel control
US2324513A (en) Control system
US2962865A (en) Control of forced flow steam generators
US2908255A (en) Forced-flow steam generators
US2805653A (en) Vapor generating and superheating operation
US3205870A (en) Control system for steam generators
US2985153A (en) Vapor generation and superheating
US3161180A (en) Control systems
US1779706A (en) Superheater steam boiler and method of operating the same
US2032368A (en) High pressure boiler
US2072887A (en) Forced flow generator and method of operating same
US2271886A (en) Steam power plant employing steam generators of the flow-through type
GB1025509A (en) Method and apparatus for controlling a vapor generator operating at supercritical pressure
US2211724A (en) Forced flow generator and method of operating same