EP0315870A1 - Générateur de vapeur - Google Patents

Générateur de vapeur Download PDF

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Publication number
EP0315870A1
EP0315870A1 EP88118144A EP88118144A EP0315870A1 EP 0315870 A1 EP0315870 A1 EP 0315870A1 EP 88118144 A EP88118144 A EP 88118144A EP 88118144 A EP88118144 A EP 88118144A EP 0315870 A1 EP0315870 A1 EP 0315870A1
Authority
EP
European Patent Office
Prior art keywords
steam generator
tube
horizontal
tube bundle
drain
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.)
Granted
Application number
EP88118144A
Other languages
German (de)
English (en)
Other versions
EP0315870B1 (fr
Inventor
Zvonimir Dipl.-Ing. Sterk
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0315870A1 publication Critical patent/EP0315870A1/fr
Application granted granted Critical
Publication of EP0315870B1 publication Critical patent/EP0315870B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F28F9/0229—Double end plates; Single end plates with hollow spaces
    • 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
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators

Definitions

  • the invention relates to a steam generator with an elongated housing in the vertical direction, which includes a U-shaped tube bundle, the legs of which are gripped with their tube ends in a horizontal tube plate, a drain line being provided on the tube plate, which has vertical bores in the area of the Pipe bundle leads.
  • the drain pipe is the space between the tube sheet and a so-called baffle plate placed above it. Holes are provided in the baffle over the entire cross-section of the housing, so that the entire cross-section of the U-tube bundle is covered by the drain pipe. Because of the large cross-section of this "drain pipe", separating plates are provided which radiate from the center of the steam generator housing and form sector-shaped partial lines. Each of the twelve sub-lines is connected to a common ring line via a valve. This should make the cleaning process more economical, because you can choose between an optimal cleaning and a saving of cleaning liquid as required. However, this requires a great deal of structural effort. In contrast, the object of the invention is precisely to obtain a sufficient blowdown with the least possible construction effort.
  • the drain line in the form of a horizontal line extending across the width of the tube bundle is incorporated into the tube sheet in such a way that the bores emanating from it lead into a space between the legs of the tube bundle.
  • the invention does not require any additional components at all.
  • the drain pipe is rather incorporated into the tube sheet itself, e.g. through a drilling process, i.e. with cutting deformation.
  • the effort required for machine processing is relatively low and can also be carried out as part of a so-called retrofit if necessary.
  • the invention has the great advantage that the drain pipe cannot be endangered by thermal stresses or the like. In any case, a sufficient blowdown is obtained with significantly less construction effort than with the known steam generator.
  • the drain pipe leading to an additional pipe in a steam generator according to German patent specification 29 49 975 requires a greater effort because the additional pipe in the space between the pipes of the steam generator must be supported in a vibration-proof manner in the vicinity of the tube sheet without being attached by Thermal expansion stresses may be caused.
  • the invention can advantageously also be implemented in such a way that the horizontal line comprises two sections that start from opposite sides and lie on one diameter. This makes processing easier insofar as the depth of penetration is practically halved when the line is worked into the tube sheet. Nevertheless, the advantages of the invention, namely the use of the tube base, which is present anyway, to form a drain pipe, which works vibration-proof and free of thermal stress, are fully retained.
  • the distance between the vertical bores should decrease from the edge to the center of the steam generator so that a particularly intensive drainage effect is available in the low-flow area in the center of the tube bundle.
  • the smallest distance between two claimed verticals is preferably Holes at most half the largest vertical distance. This is a clear difference compared to the sub-lines according to DE-AS 25 23 874, whose cross-sectional areas decrease considerably towards the center of the steam generator.
  • further horizontal drainage bores can be provided in addition to the horizontal drain line, which extend under the annular space and lead with vertical bores in the latter. This prevents the accumulation of corrosion-promoting deposits in the otherwise unrecorded annulus.
  • the drain holes and the drain line can advantageously be connected to a common drain collector.
  • the steam generator comprises a housing 1 which is elongated in the vertical direction and encloses a U-tube bundle 3 with its cylindrical wall 2.
  • the tube ends 5 of the legs 6 and 7 of the U-tube bundle 3 are contained in a tube sheet 8, which divides the cylindrical housing 1 in a horizontal plane.
  • the steam generator housing 1 is closed with a spherical plate 10, in which two chambers 11 and 12 are formed, which serve to apply the primary water of the pressurized water reactor to the U-tube bundle 3.
  • FIG 2 shows that the legs 6 and 7 of the U-tube bundle 3 indicate the cylindrical cross section of the steam generator housing 1 are fit. Between the two legs 6 and 7 there is a pipe lane 15 which is expanded in a circular manner in the center of the steam generator. The limits of the cross section of the U-tube bundle 3 are shown in FIG 2 with a dashed line 16.
  • the tube sheet 8 has a thickness of e.g. 500 mm.
  • a drain pipe 18 is incorporated in the form of a bore with two sections 19 and 20.
  • the sections 19 and 20 lie, as shown in FIG 2, on a diameter, so that vertical bores 22, which connect the sections 19 and 20 with the space located above the tube sheet 8, into the tube lane 15 between the two legs 6 and 7 of the U-tube bundle 8.
  • the distance A between the bores 22 decreases increasingly from the edge towards the inside. It is only about a third of the distance A between the two outermost holes in the area of the circular extension 16.
  • the sections 19 and 20 lead to pipe sockets 25 which are welded to the steam generator housing 1.
  • pipe sockets 25 which are welded to the steam generator housing 1.
  • short horizontal bores 26 of which a vertical connecting bore 27 in an annular space 28 between the housing wall 2 and a cylindrical jacket 30 surrounding the U-tube bundle 3.
  • the connecting pieces 29 of the horizontal Blowdown bores 26 and sections 19 and 20 are connected to a common drainage line 32, as indicated in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
EP88118144A 1987-11-11 1988-10-31 Générateur de vapeur Expired - Lifetime EP0315870B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3738347 1987-11-11
DE3738347 1987-11-11

Publications (2)

Publication Number Publication Date
EP0315870A1 true EP0315870A1 (fr) 1989-05-17
EP0315870B1 EP0315870B1 (fr) 1990-09-12

Family

ID=6340292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118144A Expired - Lifetime EP0315870B1 (fr) 1987-11-11 1988-10-31 Générateur de vapeur

Country Status (5)

Country Link
US (2) US4883036A (fr)
EP (1) EP0315870B1 (fr)
CA (1) CA1287778C (fr)
DE (1) DE3860607D1 (fr)
ES (1) ES2017781B3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692965A1 (fr) * 1992-06-26 1993-12-31 Framatome Sa Générateur de vapeur équipé d'un dispositif de purge de la face secondaire de la plaque à tubes.
FR2713310A1 (fr) * 1993-11-30 1995-06-09 Framatome Sa Générateur de vapeur équipé d'un dispositif de purge perfectionné de la face secondaire de la plaque à tubes.
BE1012128A3 (nl) * 1998-08-21 2000-05-02 Blommaert Paul Gecombineerde stoomketel-voedingswater voorverwarmer van het vlampijptype "combiketel"
DE102006057734B4 (de) * 2006-12-07 2014-09-11 Uhde Gmbh Verfahren und Vorrichtung zur Abschlämmung von sich auf einem Rohrboden ablagernden Feststoffen

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088451A (en) * 1990-04-09 1992-02-18 Westinghouse Electric Corp. Sludge removal system for removing sludge from heat exchangers
FR2690224B1 (fr) * 1992-04-15 1994-06-03 Framatome Sa Generateur de vapeur equipe d'un dispositif de deflection et de purge perfectionne.
FR2799529B1 (fr) * 1999-10-08 2002-01-18 Framatome Sa Generateur de vapeur comportant une plaque de repartition pour favoriser l'ecoulement de l'eau d'alimentation au-dessus de la plaque tubulaire
FR2858683B1 (fr) * 2003-08-07 2005-11-04 Framatome Anp Echangeur de chaleur et en particulier generateur de vapeur a fond convexe
US10357126B2 (en) * 2015-03-25 2019-07-23 Illinois Tool Works Inc. Steam generator
US10973360B2 (en) 2015-03-25 2021-04-13 Illinois Tool Works Inc. Steam generator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH527390A (de) * 1972-04-07 1972-08-31 Sulzer Ag Verdampfer
DE2243402A1 (de) * 1972-09-04 1974-04-04 Siemens Ag Dampferzeuger
DE2262151A1 (de) * 1972-12-19 1974-07-04 Siemens Ag Dampferzeuger, insbesondere fuer druckwasserreaktoren
US3942481A (en) * 1974-09-18 1976-03-09 Westinghouse Electric Corporation Blowdown arrangement
US4037569A (en) * 1976-01-30 1977-07-26 Westinghouse Electric Corporation Flow distribution arrangement for a steam generator
FR2487043A1 (fr) * 1980-07-18 1982-01-22 Framatome Sa Dispositif de decolmatage et de recuperation de boues deposees sur la plaque tubulaire d'un generateur de vapeur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735450A1 (de) * 1977-08-05 1979-02-15 Kraftwerk Union Ag Dampferzeuger fuer kernkraftwerke, insbesondere fuer druckwasserreaktoren
US4261300A (en) * 1978-12-26 1981-04-14 Combustion Engineering, Inc. Nuclear steam generator
FR2573179B1 (fr) * 1984-11-13 1987-02-13 Framatome Sa Dispositif d'enlevement des boues pour installation de nettoyage de la plaque tubulaire d'un generateur de vapeur et installation comportant un tel dispositif
US4756770A (en) * 1986-02-11 1988-07-12 Arkansas Power And Light Company Water slap steam generator cleaning method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH527390A (de) * 1972-04-07 1972-08-31 Sulzer Ag Verdampfer
DE2243402A1 (de) * 1972-09-04 1974-04-04 Siemens Ag Dampferzeuger
DE2262151A1 (de) * 1972-12-19 1974-07-04 Siemens Ag Dampferzeuger, insbesondere fuer druckwasserreaktoren
US3942481A (en) * 1974-09-18 1976-03-09 Westinghouse Electric Corporation Blowdown arrangement
US4037569A (en) * 1976-01-30 1977-07-26 Westinghouse Electric Corporation Flow distribution arrangement for a steam generator
FR2487043A1 (fr) * 1980-07-18 1982-01-22 Framatome Sa Dispositif de decolmatage et de recuperation de boues deposees sur la plaque tubulaire d'un generateur de vapeur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692965A1 (fr) * 1992-06-26 1993-12-31 Framatome Sa Générateur de vapeur équipé d'un dispositif de purge de la face secondaire de la plaque à tubes.
FR2713310A1 (fr) * 1993-11-30 1995-06-09 Framatome Sa Générateur de vapeur équipé d'un dispositif de purge perfectionné de la face secondaire de la plaque à tubes.
BE1012128A3 (nl) * 1998-08-21 2000-05-02 Blommaert Paul Gecombineerde stoomketel-voedingswater voorverwarmer van het vlampijptype "combiketel"
DE102006057734B4 (de) * 2006-12-07 2014-09-11 Uhde Gmbh Verfahren und Vorrichtung zur Abschlämmung von sich auf einem Rohrboden ablagernden Feststoffen

Also Published As

Publication number Publication date
CA1287778C (fr) 1991-08-20
ES2017781B3 (es) 1991-03-01
EP0315870B1 (fr) 1990-09-12
US4989550A (en) 1991-02-05
US4883036A (en) 1989-11-28
DE3860607D1 (de) 1990-10-18

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