EP0061381B1 - Erzeuger von überhitztem Dampf - Google Patents

Erzeuger von überhitztem Dampf Download PDF

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Publication number
EP0061381B1
EP0061381B1 EP82400402A EP82400402A EP0061381B1 EP 0061381 B1 EP0061381 B1 EP 0061381B1 EP 82400402 A EP82400402 A EP 82400402A EP 82400402 A EP82400402 A EP 82400402A EP 0061381 B1 EP0061381 B1 EP 0061381B1
Authority
EP
European Patent Office
Prior art keywords
steam
outlet manifold
superheated
steam generator
superheated steam
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
Application number
EP82400402A
Other languages
English (en)
French (fr)
Other versions
EP0061381A1 (de
Inventor
Thong Nguyen-Thanh
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0061381A1 publication Critical patent/EP0061381A1/de
Application granted granted Critical
Publication of EP0061381B1 publication Critical patent/EP0061381B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0075—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the same heat exchange medium flowing through sections having different heat exchange capacities or for heating or cooling the same heat exchange medium at different temperatures
    • 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
    • F28F9/02—Header boxes; End plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/051—Heat exchange having expansion and contraction relieving or absorbing means

Definitions

  • the present invention relates to a superheated steam generator comprising an outer shell having at its opposite ends a water inlet chamber to vaporize and overheat and a steam outlet chamber and a bundle of tubes connecting said chambers and in which circulates l water to vaporize and overheat by heat exchange with a hotter fluid circulating against the current around the tubes inside the outer shell.
  • a superheated steam generator comprising an outer shell having at its opposite ends a water inlet chamber to vaporize and overheat and a steam outlet chamber and a bundle of tubes connecting said chambers and in which circulates l water to vaporize and overheat by heat exchange with a hotter fluid circulating against the current around the tubes inside the outer shell.
  • Such steam outlet chambers are traversed by superheated steam at very high temperature and under very high pressure. They include a steam outlet base and one or more inspection holes.
  • the tube plate and the bottom, which constitute their walls, must be very thick. This results in the appearance of very significant thermal stresses during transient operating regimes, when starting, stopping or changing the regime. These constraints appear in the walls of the chamber, due to the delay with which the external wall of the chamber follows the temperature variations of the internal wall. They also appear on the periphery of the tube plate, due to the difference in thermal inertia between the perforated zone of the plate and the full peripheral zone.
  • the object of the present invention is to remedy these drawbacks and to reduce the thermal stresses on the external wall and on the tube plate surrounding the steam outlet chamber of the generator, and to avoid unacceptable damage during transient conditions. , while facilitating the manufacture of the steam generator.
  • the superheated steam generator according to the invention is characterized in that the steam outlet chamber has an external wall surrounded by a coil which communicates with said outlet chamber, so that part of the steam overheated admitted into the outlet chamber circulates in the coil.
  • the coil opens into a pipe for discharging the superheated steam from the outlet chamber.
  • the superheated steam generator comprises an external cylindrical shell 11 defining a vertical axis.
  • This ferrule comprises at its lower end an inlet chamber 15 'of water to be vaporized supplied by a pipe 24' and, at its upper end, an outlet chamber 15 of superheated steam which communicates with an outlet pipe 24.
  • the chambers 15 and 15 ' are connected by a bundle of vertical straight tubes 6 which are respectively connected to the inlet chamber 15' by a very thick tube plate 3 'and to the outlet chamber 15 by a tube plate 3 very thick.
  • the water to be vaporized and superheated circulates from bottom to top in the tubes 6 of the steam generator, where it is vaporized and superheated by heat exchange with a hotter fluid which circulates from top to bottom around the tubes and at l 'Inside the shell 11, between an inlet pipe 16 and an outlet pipe 16'.
  • the outlet chamber 15 has an external wall in two parts 8 and 2.
  • Part 8 constitutes an annular zone forged in one piece 1 with the tube plate 3, the latter having a concave surface 4 on the side of the chamber 15.
  • the part 1 is traversed by orifices such as quer5 extending the tubes 6 of the bundle.
  • the arrow 7 indicates the direction of circulation of the steam at the outlet of these orifices.
  • the annular connection zone 8 is connected on its periphery with the second part 2 of the wall of the chamber by a weld bead 10, at the level of the reference plane 9 perpendicular to the axis of the ferrule 11.
  • Part 1 is furthermore connects via the annular zone 8 to the external shell 11 of the generator.
  • the second part 2 of the wall of the chamber 15, of hemispherical shape, with internal surface 12, is provided with a base 13 for connection to the steam evacuation pipe 24 and a manhole pipe 14 (other manholes can possibly be added).
  • the steam outlet chamber 15 is surrounded by a coil 21, supplied with superheated steam by an orifice 22 pierced in its wall, and connected by a tube 23 to the pipe 24 for discharging the superheated steam .
  • This coil cools or warms the outer wall, depending on whether the temperature of the steam entering the steam outlet chamber decreases or increases, depending on variations in the operation of the steam generator.
  • the invention is particularly applicable in generators of superheated steam by heat exchange with liquid sodium in power plants from a breeder nuclear reactor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (3)

1. Dampferzeuger für die Erzeugung von überhitztem Dampf, mit einem äußeren Mantel (11), welcher an gegenüberliegenden Enden eine Eintrittskammer (15') für zu verdampfendes und zu überhitzendes Wasser und eine Austrittskammer (15) für den Dampf sowie ein die Kammern miteinander verbindendes Bündel von Rohren (6) aufweist, welche von dem durch Wärmetausch mit einem den äußeren Mantel um die Rohre herum im Gegenstrom durchströmenden, eine höhere Temperatur aufweisenden Strömungsmittel zu verdampfenden und zu Überhitzenden Wasser durchströmt sind, dadurch gekennzeichnet, daß die Austrittskammer (15) für den Dampf eine Außenwand (8, 2) und eine diese umgebende Rohrschlange (21) aufweist, welche mit der Austrittskammer strömungsverbunden ist, so daß die Rohrschlange von einem Teil des in die Austrittskammer einströmenden überhitzten Dampfs durchströmt ist.
2. Dampferzeuger nach Anspruch 1, dadurch gekennzeichnet, daß die Rohrschlange (21) in einer Rohrleitung (24) für den Austrag des überhitzten Dampfs aus der Austrittskammer mündet.
3. Dampferzeuger nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Rohre (6) an der Austrittskammer über eine Rohrwand (3) angeschlossen sind, welche an der der Austrittskammer zugewandten Seite eine konkave Oberfläche (4) hat, und daß die Außenwand einen einstückig mit der Rohrwand (3) aus einem zylindrischen Rohling geschmiedeten, ringförmigen Abschnitt (8) und ein getriebenes oder geschmiedetes, halbkugelförmiges Teil (12) aufweist, welches mittels einer in einer zur Achse des äußeren Mantels (11) lotrechten Ebene in Umfangsrichtung verlaufenden Schweißnaht (10) mit dem ringförmigen Abschnitt (8) verbunden ist.
EP82400402A 1981-03-20 1982-03-08 Erzeuger von überhitztem Dampf Expired EP0061381B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8105643A FR2502296A1 (fr) 1981-03-20 1981-03-20 Chambre de sortie de vapeur pour generateur de vapeur surchauffee
FR8105643 1981-03-20

Publications (2)

Publication Number Publication Date
EP0061381A1 EP0061381A1 (de) 1982-09-29
EP0061381B1 true EP0061381B1 (de) 1983-12-28

Family

ID=9256481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400402A Expired EP0061381B1 (de) 1981-03-20 1982-03-08 Erzeuger von überhitztem Dampf

Country Status (6)

Country Link
US (1) US4445568A (de)
EP (1) EP0061381B1 (de)
JP (1) JPS57169501A (de)
DE (1) DE3260026D1 (de)
ES (1) ES8401600A1 (de)
FR (1) FR2502296A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040793A1 (de) * 2007-08-28 2009-03-05 Behr Gmbh & Co. Kg Wärmetauscher
US9057516B2 (en) * 2011-11-28 2015-06-16 Trimeteor Oil and Gas Corporation Superheated steam generators

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US466092A (en) * 1891-12-29 Heater
US2102424A (en) * 1934-03-23 1937-12-14 Gen Electric Mercury power plant
GB800385A (en) * 1955-12-20 1958-08-27 Rolls Royce Improvements in or relating to steam generators
NL246851A (de) * 1959-01-02
US3768554A (en) * 1968-06-10 1973-10-30 Westinghouse Electric Corp Steam generator heated with liquid metal
US3596638A (en) * 1968-10-15 1971-08-03 Siemens Ag Forced-flow steam generator to be heated by pressurized coolant of a nuclear reactor
US3930537A (en) * 1974-05-06 1976-01-06 The United States Of America As Represented By The United States Energy Research And Development Administration Heat exchanger
US4235284A (en) * 1976-12-16 1980-11-25 The United States Of America As Represented By The United States Department Of Energy Heat exchanger with auxiliary cooling system
FR2386798A1 (fr) * 1977-04-05 1978-11-03 Commissariat Energie Atomique Echangeur de chaleur pour hautes temperatures et hautes pressions

Also Published As

Publication number Publication date
FR2502296A1 (fr) 1982-09-24
ES510587A0 (es) 1983-12-16
JPS57169501A (en) 1982-10-19
ES8401600A1 (es) 1983-12-16
FR2502296B1 (de) 1984-03-09
EP0061381A1 (de) 1982-09-29
US4445568A (en) 1984-05-01
DE3260026D1 (en) 1984-02-02

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