EP0955498B1 - Dampferzeuger mit verbesserter Wasserzufuhrvorrichtung - Google Patents

Dampferzeuger mit verbesserter Wasserzufuhrvorrichtung Download PDF

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Publication number
EP0955498B1
EP0955498B1 EP99400893A EP99400893A EP0955498B1 EP 0955498 B1 EP0955498 B1 EP 0955498B1 EP 99400893 A EP99400893 A EP 99400893A EP 99400893 A EP99400893 A EP 99400893A EP 0955498 B1 EP0955498 B1 EP 0955498B1
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EP
European Patent Office
Prior art keywords
manifold
steam generator
feedwater
water
annular space
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
EP99400893A
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English (en)
French (fr)
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EP0955498A1 (de
Inventor
Gilles Dague
Guy Desfontaines Leromain
Daniel Destre
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Areva NP SAS
Original Assignee
Framatome SA
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Filing date
Publication date
Priority claimed from FR9805620A external-priority patent/FR2778223A1/fr
Application filed by Framatome SA filed Critical Framatome SA
Publication of EP0955498A1 publication Critical patent/EP0955498A1/de
Application granted granted Critical
Publication of EP0955498B1 publication Critical patent/EP0955498B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F22B37/228—Headers for distributing feedwater into steam generator vessels; Accessories therefor
    • 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
    • F22B1/023—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes, for nuclear reactors as far as they are not classified, according to a specified heating fluid, in another group
    • F22B1/025—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes, for nuclear reactors as far as they are not classified, according to a specified heating fluid, in another group with vertical U shaped tubes carried on a horizontal tube sheet

Definitions

  • the invention relates to a steam generator and in particular a steam generator of a pressurized water nuclear reactor comprising an improved water supply device.
  • Steam generators such as steam generators pressurized water cooled nuclear reactors have a generally cylindrical outer casing arranged vertically in the nuclear reactor building, i.e. with the axis of the envelope vertical external.
  • Steam generators of pressurized water nuclear reactors allow heating and spraying of feed water, by heat exchange with the pressurized cooling water of the nuclear reactor which circulates inside tubes of an exchange beam.
  • the tube bundle is arranged inside a bundle envelope generally cylindrical in shape which is arranged coaxially inside the outer envelope.
  • the bundle tubes are fixed at their ends in a plate tubular, so that they open at a first end, in a first part of a steam generator water box and at a second end, in a second part of the generator's water box steam.
  • the steam generator water box distributes the water under pressure from the nuclear reactor vessel in which is arranged the core consisting of fuel assemblies and recover pressurized water having circulated inside the exchange tubes, to return pressurized water recovered in the nuclear reactor vessel.
  • Steam generator feed water is introduced into the outer and channeled envelope, so as to reach a part of the exchange bundle, at the bottom of the bundle and the beam envelope.
  • the feed water then flows from bottom to top inside the beam envelope, in contact with the outer surface tubes, so that it heats up then vaporizes and ends up in the form of vapor in the upper part of the external envelope of the steam generator.
  • the vapor recovered in the upper part of the steam generator is sent to the reactor turbine.
  • Feed water is usually introduced at the top an annular space formed between the envelope of the tube bundle and the outer envelope or between the bundle envelope and a skirt delimiting a circulation space communicating with an end part of the bundle formed by the ends of the cold branches of the tubes, that is to say branches of the tubes through which the cooling water comes out of the reactor used for heating and vaporizing the water Power.
  • the feed water introduced into the envelope of the steam generator flows from top to bottom in an annular space of vertical axial direction, to the bottom of the beam envelope.
  • a manifold of generally toric shape which is arranged inside the outer casing of the generator vapor, directly above the upper part of the annular supply space in water.
  • the collector is connected to a through water supply line the outer shell of the steam generator and has means of distributing and guiding the feed water distributed in the circumferential direction of the annular water supply space.
  • the means for distributing and guiding the feed water can be formed by inverted J-shaped tubes with a straight vertical branch is attached to the manifold and the loop is directed downward, direction of the upper part of the annular supply space.
  • the distribution in the circumferential direction and the flow through each of the J-shaped tubes provide satisfactory water distribution supply in the circumferential direction of the annular space.
  • this device has the disadvantage that the jets leaving the tubes J-shaped have significant velocities, which disrupts the flow of water going to the annular supply space.
  • French patent FR-2,700,383 has been proposed (EP-0.607.071) to make the water supply collector in the form of a weir formed by a gutter having the general shape of a torus open to its upper part or a portion of open torus, with which are associated supply water guide walls directed downwards, in the upper part of the annular space.
  • the feed water is brought to the interior of the collector via a feed line the outer casing of the steam generator and opening into the manifold.
  • the supply water fills the collector in the form of a gutter, up to level of a discharge edge above which the water supply flows into a flow space delimited by the walls guide.
  • the weir ensures a certain distribution of the flow feed water along the circumference of the annular space, but there is very difficult to determine precisely what this distribution will be, depending on the supply conditions of the weir.
  • Another disadvantage of the device comprising a weir is that it is not easy to ensure satisfactory mechanical strength of the weir, during heavy mechanical stresses, such as water hammer, or accidental situation, in the event of a break in the water piping food. It is therefore necessary to design elements constituting the dispensing device which are extremely resistant and which are produced from very thick sheets.
  • the object of the invention is therefore to propose a steam generator comprising an outer casing of generally cylindrical shape arranged with its vertical axis, a bundle of exchange tubes fixed inside of a generally cylindrical bundle envelope disposed coaxially inside the outer envelope, so as to delimit with the outer casing or with a coaxial guide skirt to the outer envelope, an annular space for circulation of feed water of the steam generator in the axial direction and a supply device feed water at an upper axial end of the annular space comprising a generally toroidal collector arranged in a part at least the circumference of the annular space, at least one pipe supply to the collector passing through the outer casing and means for guiding the feed water downwards, towards the annular space, the supply water supply device ensuring a perfectly controlled regular supply of the annular space and with a well-defined circumferential distribution, while being structurally mechanical allowing it to withstand jolts from the feed in water.
  • the toroidal manifold has an upper wall crossed by a plurality of flow openings distributed along the circumferential direction of the manifold and the means for guiding the feed water has an envelope arranged around a part at least of the collector, so as to delimit with the collector a space water flow, at least one guide wall extending the envelope downwards and a plurality of dividing walls of radial direction separating the water flow space in a plurality of successive sections in the circumferential direction of the collector.
  • Figure 1 is an elevational view in partial section through a plane vertical view of a steam generator according to the invention.
  • Figure 2 is a half-view in section through a horizontal plane of the generator of steam, following 2-2 of figure 1.
  • Figure 3 is a sectional view along 3-3 of Figure 2.
  • Figure 4 is a sectional view along 4-4 of Figure 2.
  • Figure 5 is a sectional view along 5-5 of Figure 2.
  • Figure 6 is a sectional view along 6-6 of Figure 2.
  • FIG. 7 is a sectional view along 7-7 of FIG. 6.
  • the steam generator 1 has an outer casing 2 of generally cylindrical shape having a lower part having a first diameter and an upper part having a second diameter greater than first diameter, the two parts of the external envelope being connected between them by a frustoconical shell 2a.
  • the generator vapor When in service in the nuclear reactor building, the generator vapor is arranged vertically, that is to say in such a way that the axis of the outer envelope 2 is vertical.
  • the steam generator 1 comprises a bundle of exchange tubes heat 3 arranged inside a beam envelope 4 of form general cylindrical placed coaxially inside the external envelope 2 of the steam generator.
  • the bundle of tubes 3 consists of curved tubes having the form U upturned with straight branches attached at their ends in a tubular plate 5 integral with the external envelope 2.
  • a water box 6 of hemispherical shape comprising two compartments 6a and 6b separated from each other by a partition.
  • Pressurized reactor cooling water from the tank containing the nuclear reactor core is introduced into the compartment 6a and distributed in the branches of the tubes of bundle 3 emerging in compartment 6a, these branches constituting the branches beam 3.
  • the reactor cooling pressurized water circulates at inside the bundle tubes to reach compartment 6b of the water box into which the cold branches of the bundle tubes open 3.
  • the cooling water having circulated in the tubes of the bundle 3 is returned to the nuclear reactor vessel.
  • a separation plate 7 between the lower parts of the branches hot and cold branches of the bundle 3 tubes is arranged vertically between the branches of the bundle and attached to its lower part on the tubular plate 5, in a diametrical direction of the tubular plate.
  • a supply water guide skirt 8 having the shape of a cylindrical sector about 180 ° in the circumferential direction.
  • the upper part 8a of the skirt 8 is flared upwards and presents the form of a frustoconical sector.
  • the lower end of the skirt 8 is in contact with the upper face of the tube plate 5.
  • annular space 9 for circulating the steam generator feed water.
  • the annular space 9 axial direction feed water circulation is closed at its lower part by the tube plate 5.
  • the lower end of the bundle envelope 4 is disposed at a certain height above the upper face of the tube plate 5, so that the feed water circulation space 9 communicates with the part of the bundle envelope 4 enclosing the lower ends cold branches of the tubes of bundle 3, delimited by the plate vertical separation 7.
  • a device 10 for supplying and distributing water supply ensuring the introduction of a supply water stream from the steam generator which is distributed in the circumferential direction of the annular space 9 surrounding part of the bundle envelope 4.
  • the device 10 for introducing and distributing feed water which is produced in accordance with the invention, will be described below.
  • Feed water introduced into the upper part of the space annular 9 flows from top to bottom, in the vertical direction, i.e. in the axial direction of the steam generator, up to the upper face of the tube plate 5 constituting the lower end of the annular space 9.
  • the feed water then enters the bundle envelope 4, to come into contact with the lower end part of the cold branches bundle 3 tubes.
  • the feed water is preheated for its circulation in the annular space and in contact with the end parts cold branches through which the cooling water circulates reactor which is recovered in compartment 6b of the water box.
  • the steam generator supply water reaching the upper edge of the separation plate 7 comes into contact with the branches tubes of bundle 3 in which the water circulates under cooling pressure from the reactor vessel.
  • the contact with the hot branches and the upper part of the cold branches of the beam produces additional heating of the feed water which rises inside the bundle, while heating and vaporizing.
  • the vapor formed from the feed water heated on contact of the beam leaves the envelope of the beam through its upper part and enters in the upper large-diameter part of the outer casing 2 of the steam generator in which separators and dryers are arranged steam.
  • the dried steam is sent to the turbine associated with the reactor nuclear via a pipe connected to the pipe 11 constituting the upper part of the outer casing 2 of the steam generator.
  • the device 10 for introducing and distributing feed water must ensure a satisfactory distribution of the feed water in the direction circumferential of the annular space 9.
  • a device 10 for introduction and water distribution which mainly comprises a collector 12 having the shape of a torus portion extending over a slightly circular arc less than 180 °, a conduit 13 for introducing feed water in the manifold 12 and a set 14 in two parts for guiding the water downwards towards the annular space 9 delimited between the skirt 8 and the bundle envelope 4 of the steam generator.
  • the feed water introduction pipe 13 is connected on the one hand to a pipe 15 for crossing the external envelope of the steam generator and on the other hand to a central section 16 of the manifold 12 in the form of portion of torus.
  • the manifold 12 is constituted by a portion of pipe large diameter toroidal fixed by means of supports 17 on the surface inside of the outer casing 2 of the steam generator, above of the part 8a of the skirt 8 in the form of a frustoconical sector.
  • the collector 12 in the form of a torus portion, comprises, in the part upper part of its wall, openings 18 whose centers are aligned on a circle centered on the axis of the steam generator common to the envelope external 2, to the bundle envelope 4 and to the collector 12.
  • the successive openings 18 whose sections can be differentiated are spaced from each other by a substantially constant distance, so as to allow a uniform distribution of feed water in the circumferential direction of the manifold 12 in the form of a portion torus.
  • openings 18 whose dimensions and distributions are adapted to the particular distribution of feed water to be obtained. This is true even when you want to obtain a homogeneous distribution.
  • each of the two parts of the feed water guide device 14 has an external wall 14a comprising a portion in the form of a torus portion whose cross section roughly corresponds to a quarter of circular section and a frustoconical part extending downward the toric part, substantially parallel to the frustoconical part 8a of the skirt 8.
  • the guide device 14 comprises plus an internal part 14b of cylindrical shape located opposite the frustoconical lower part of the external wall 14a of the guide device.
  • the two parts 14a and 14b of the guide device are fixed to the manifold 12.
  • the openings 18 passing through the upper wall of the manifold toric 12 open into a water flow space 20 delimited between the surface of the manifold 12 and the O-ring part 14a of the guide device arranged around the wall of the manifold 12.
  • the guide assembly 14 is placed in a coaxial arrangement relative to the manifold 12 and the steam generator.
  • Space flow 20, delimited between two parallel toric surface portions, has a tubular and annular shape.
  • Space 20 opens into a supply water outlet space delimited between the frustoconical part external 14a and the internal cylindrical part 14b of the guide device 14.
  • the fluid outlet space itself opens directly above the annular space 9 to supply the steam generator.
  • the two portions of the device guide 14 are each separated into several successive sections (three sections 26a, 26b and 26c in the case shown in Figures 2 and 4) by radial walls such as 19a, 19b, 19c and 19d.
  • the walls 19b and 19c are walls separating two sectors of the guide device and the walls 19a and 19d are closure walls of the ends of the portion of guide device 14.
  • the two portions of guide device 14 arranged symmetrically relative to the supply duct 13 of the manifold 12 are produced in the same way.
  • partition wall 19c has the shape of the section of the flow and outlet spaces of the feed water of the guide device.
  • the walls such as 19c are welded to the walls of the guide device.
  • the conduit 13 for supplying the collector 12 connected to the central section 16 of the collector opens into the collector, below the upper part of the manifold with the openings 18, so as to ensure the supply of supply water to the collector 12.
  • two filtration devices 21a and 21b are placed on the central section of the manifold on both sides of the connection area of the supply duct 13. The two devices 21a and 21b are carried out identically, so that will only describe the filtration device 21b shown in FIGS. 5, 6 and 7.
  • the filtration devices are mounted on the upper part of the manifold 12, at the level of openings cut in the wall of the manifold toroid whose shape corresponds to the section of a cylinder with the surface collector ring.
  • the filtration device 21 b has a structure of support consisting of a cylindrical wall 23 comprising a peripheral flange 22 which rests on the O-ring manifold 12, in an arrangement coaxial with an opening passing through the wall of the O-ring manifold.
  • the filtration element of the filtration device consists of a flat lattice plate 24 held in the shell of the O-ring manifold 12, at the opening through which the cylindrical wall is placed 23 of the support structure.
  • the means for holding the flat plate 24 of the filter element have a substantially shaped guide rail semicircular attached to the inner surface of the toroidal wall and a pad 25 having a circular outline and having a slot diametral in which is engaged the upper edge of the plate 24.
  • the closure pad 25 has a peripheral flange allowing its fixing by screws on the peripheral flange 22 of the support assembly. Of more, the pad 25 has a shape such that it fills the interior volume of the cylindrical wall 23 of the support assembly, in order to avoid the presence dead volume in the upper part of the support assembly.
  • the plate filtration 24 has a semi-circular end portion whose shape and dimension correspond to the half-section of the torus 12.
  • the filtration plate 24 penetrates inside the torus, so as to completely block the section meridian of the torus, as it can be seen in Figures 5 and 6.
  • the feed water introduced through the conduit supply 13, which enters the central section 16 of the manifold 12, must pass through the filtration walls 24 of the filtration devices 21a and 21b before filling the two distribution parts of the collector located on the side and on the other side of the central section 16.
  • the supply water is filtered, in such a way that the migrant bodies possibly contained in the feed water are stopped in the central space for introducing the collector and cannot be entrained in the two distribution parts of the manifold and in the annular space 9 supplying the generator steam.
  • the supply water filling the two distribution parts of the torus on either side of the central section 16 flows through the upper openings 18 of the manifold 12, in the flow space 20 then in the outlet space situated in the extension of the flow space 20.
  • the feed water is thus guided downwards towards space ring 9 for supplying the steam generator.
  • the device according to the invention makes it possible to obtain both a distribution supply water in the circumferential direction of the steam generator supply annular space and a flow whose turbulence is very limited at the outlet of the supply device due to the distribution of water through openings passing through the envelope the upper part of the manifold and the presence of the segmented guidance.
  • the mechanical strength of the collector consisting of an envelope closed toroid is better than the mechanical strength of a weir shaped like a gutter.
  • the water passage openings of the O-ring manifold are made so as to avoid any risk of dewatering the O-ring manifold, in the event of drop in level in the steam generator which would result in an accumulation vapor in the upper part of the O-ring manifold. A such build-up of steam would be detrimental at the time of return to operation of the drinking water supply system, after a shutdown period.
  • the design of the guidance device in the form of successive sectors separated by radial separation plates makes it easier to realization of this guide device.
  • the presence of separation plates radial creates successive supply water currents in the circumferential direction and contributes to a better stability of flow.
  • the presence of separate sectors also makes it possible to preserve at the exit of each of the elementary sectors the same distribution than that existing at the outlet of the manifold openings.
  • the dimension of the mesh of the trellis or of the grid constituting the filter element 24 is chosen so as to retain the migrating bodies having a dimension greater than a predetermined dimension.
  • the predetermined dimension is less than the distance between the steam generator harness tubes, to prevent migrant bodies coming from the secondary circuit do get stuck between the beam tubes and do not risk damaging them.
  • both grids each ensure only filtration of half the feed water flow to the steam generator, which reduces the loss of load with respect to a single grid.
  • the arrangement of the element filtration inside the steam generator allows the whole support 22, 23 and to the buffer 25 for closing the filtration element of work under low pressure, a small leak which may appear at the level of the flange having no harmful consequence, because that the leak supply water then falls directly into space steam generator supply ring.
  • the collector can have a shape and a structure different from those that have been described.
  • the collector has the shape of a torus portion whereas in the case of a steam generator not using preheating, the manifold can have the shape of a complete torus placed above the feeding space of the steam generator, around its entire circumference.
  • the arrangement and size of the feed water outlet openings of the collector may be different from those which have been described.
  • the guide device may also have a different shape of the form described and can be made in one piece or under the form of several successive sections. Similarly, the distribution of the walls radial separation in the circumferential direction of the device guidance can be arbitrary.
  • the invention applies to any steam generator comprising a space annular feed water circulation and a supply device feed water at an upper axial end of the annular space feed water circulation.

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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
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Claims (6)

  1. Dampferzeuger, der eine allgemein zylindrisch geformte Außenverkleidung (2), deren Achse senkrecht angeordnet ist, ein Bündel von Wärmetauscherrohren (3), die innerhalb einer Bündelumhüllung (4) von allgemein zylindrischer Form befestigt sind, die koaxial innerhalb der Außenverkleidung (2) angeordnet ist, um mit der Außenverkleidung (2) oder mit einer zur Außenverkleidung (2) koaxialen Leitschürze (8) einen ringförmigen Raum (9) für den Umlauf von Speisewasser des Dampferzeugers (1) in axialer Richtung zu begrenzen, und eine Vorrichtung (10) zur Versorgung mit Speisewasser an einem oberen axialen Ende des ringförmigen Raums (9) aufweist, die einen allgemein torischen Verteiler (12), der entlang zumindest eines Teils des Umfangs des ringförmigen Raums (9) angeordnet ist, mindestens eine Versorgungsleitung (13) für den Verteiler (12), die die Außenverkleidung (2) durchquert, und Mittel (14) zur Leitung des Speisewassers nach unten in Richtung zum ringförmigen Raum (9) aufweist, dadurch gekennzeichnet, daß der torische Verteiler (12) eine obere Wand aufweist, die von mehreren Fließöffnungen (18) durchquert wird, die entlang der Umfangsrichtung des Verteilers (12) angeordnet sind, und daß die Mittel (14) zur Leitung des Speisewassers eine Hülle (14a) enthalten, die um zumindest einen Teil des Verteilers (12) herum angeordnet ist, um mit dem Verteiler einen Wasserfließraum (20) zu bilden, wobei mindestens eine Leitwand die Hülle (14a) nach unten verlängert, und mehrere Trennwände (19a, 19b, 19c, 19d) mit radialer Ausrichtung den Wasserfließraum (20) in mehrere aufeinanderfolgende Abschnitte (26a, 26b, 26c) in Umfangsrichtung des Verteilers (2) aufteilen.
  2. Dampferzeuger nach Anspruch 1, dadurch gekennzeichnet, daß die Leitmittel (14) des Speisewassers außerdem eine zylindrische Wand (14b) aufweisen, die gegenüber der Leitwand zur Innenseite des Dampferzeugers hin angeordnet ist und die Hülle (14a) nach unten verlängert.
  3. Dampferzeuger mit Vorerwärmung nach einem der Ansprüche 1 und 2, mit einer Leitschürze (8) für das Speisewasser, die koaxial zur Außenverkleidung (2) und zur Bündelumhüllung (4) des Dampferzeugers ist und zwischen der Außenverkleidung (2) und der Bündelumhüllung (4) liegt, wobei sie mit der Bündelumhüllung (4) den ringförmigen Raum für den Speisewasser-Umlauf über einen Teil des Umfangs der Bündelumhüllung (4) bildet, ist, dadurch gekennzeichnet, daß der Verteiler aus einem Torusabschnitt besteht, der oberhalb des ringförmigen Raums für den Umlauf von Speisewasser angeordnet ist.
  4. Dampferzeuger nach Anspruch 3, dadurch gekennzeichnet, daß der ringförmige Versorgungsraum (9), der Verteiler (12) und die Leitmittel (14) für das Speisewasser sich über einen Kreisbogen erstrecken, der etwas kleiner als 180° ist.
  5. Dampferzeuger nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, daß die Versorgungsleitung (13) des Verteilers (12) an einem Mittelabschnitt (16) des Verteilers befestigt ist, um Speisewasser in den zentralen Abschnitt (16) des Verteilers (12) einzuführen, wobei das Speisewasser dann in zwei Wasserausgabebereichen des Verteilers (12) verteilt ist, die sich zu beiden Seiten des zentralen Abschnitts (16) befinden.
  6. Dampferzeuger nach Anspruch 5, dadurch gekennzeichnet, daß zwei Filtervorrichtungen (21a, 21b) im zentralen Abschnitt (16) des Verteilers (12) zu beiden Seiten der Anschlußzone der Versorgungsleitung (13) an den zentralen Abschnitt (16) des Verteilers (12) angeordnet sind.
EP99400893A 1998-05-04 1999-04-12 Dampferzeuger mit verbesserter Wasserzufuhrvorrichtung Expired - Lifetime EP0955498B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9805620A FR2778223A1 (fr) 1998-05-04 1998-05-04 Generateur de vapeur comportant un dispositif d'alimentation en eau perfectionne
FR9805620 1998-05-04
FR9805843 1998-05-07
FR9805843A FR2778224B1 (fr) 1998-05-04 1998-05-07 Generateur de vapeur comportant un dispositif d'alimentation en eau perfectionne

Publications (2)

Publication Number Publication Date
EP0955498A1 EP0955498A1 (de) 1999-11-10
EP0955498B1 true EP0955498B1 (de) 2003-03-12

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EP99400893A Expired - Lifetime EP0955498B1 (de) 1998-05-04 1999-04-12 Dampferzeuger mit verbesserter Wasserzufuhrvorrichtung

Country Status (8)

Country Link
US (1) US6173680B1 (de)
EP (1) EP0955498B1 (de)
JP (1) JP4671454B2 (de)
CN (1) CN1127738C (de)
CA (1) CA2270781C (de)
DE (1) DE69905792T2 (de)
ES (1) ES2194423T3 (de)
FR (1) FR2778224B1 (de)

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FR2851031B1 (fr) * 2003-02-12 2005-05-06 Framatome Anp Generateur de vapeur comportant un dispositif de fourniture d'eau d'alimentation realisant le piegeage de corps etrangers
FR2853047B1 (fr) * 2003-03-31 2005-06-24 Framatome Anp Generateur de vapeur comportant un dispositif d'alimentation en eau de secours
US20050050892A1 (en) * 2003-09-08 2005-03-10 Len Gould Gravity condensate and coolant pressurizing system
JP2007147163A (ja) * 2005-11-28 2007-06-14 Mitsubishi Heavy Ind Ltd 蒸気発生器及び蒸気発生器における冷却水の流動抵抗調整方法
US7434546B2 (en) * 2006-11-28 2008-10-14 Westinghouse Electric Co. Llc Steam generator loose parts collector weir
JP5055165B2 (ja) * 2008-02-29 2012-10-24 三菱重工業株式会社 蒸気発生器
JP2012220043A (ja) 2011-04-04 2012-11-12 Mitsubishi Heavy Ind Ltd 蒸気発生器
JP2012220077A (ja) * 2011-04-07 2012-11-12 Mitsubishi Heavy Ind Ltd 蒸気発生器用給水管
US9175845B2 (en) * 2012-07-10 2015-11-03 Westinghouse Electric Company Llc Axial flow steam generator feedwater dispersion apparatus
CN103177783B (zh) * 2013-01-14 2015-07-15 上海核工程研究设计院 一种一体化反应堆蒸汽发生器
CN104392751A (zh) * 2014-10-21 2015-03-04 中科华核电技术研究院有限公司 避免放射性物质排放的蒸汽发生器
CN106257264B (zh) * 2016-09-08 2018-09-11 中国核动力研究设计院 一种带轴向预热器蒸汽发生器的试验回路
CN106257263B (zh) * 2016-09-08 2018-09-11 中国核动力研究设计院 一种带轴向预热器蒸汽发生器的试验方法及应用
CN106257137A (zh) * 2016-09-08 2016-12-28 中国核动力研究设计院 一种带轴向预热器的蒸汽发生器
CN109458609B (zh) * 2018-11-13 2019-11-12 中国核动力研究设计院 一种压水堆核电站蒸汽发生器给水环支承结构和系统

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FR2778224A1 (fr) 1999-11-05
CA2270781A1 (fr) 1999-11-04
JP2000009888A (ja) 2000-01-14
JP4671454B2 (ja) 2011-04-20
EP0955498A1 (de) 1999-11-10
ES2194423T3 (es) 2003-11-16
DE69905792D1 (de) 2003-04-17
US6173680B1 (en) 2001-01-16
CN1234586A (zh) 1999-11-10
DE69905792T2 (de) 2004-02-12
CA2270781C (fr) 2007-08-14
CN1127738C (zh) 2003-11-12
FR2778224B1 (fr) 2000-07-28

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