EP0387131A1 - Vorrichtung zur Stabilisierung von Rohren eines Dampferzeugerrohrbündels mit schwingungsneutralisierenden Stangen - Google Patents

Vorrichtung zur Stabilisierung von Rohren eines Dampferzeugerrohrbündels mit schwingungsneutralisierenden Stangen Download PDF

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Publication number
EP0387131A1
EP0387131A1 EP90400573A EP90400573A EP0387131A1 EP 0387131 A1 EP0387131 A1 EP 0387131A1 EP 90400573 A EP90400573 A EP 90400573A EP 90400573 A EP90400573 A EP 90400573A EP 0387131 A1 EP0387131 A1 EP 0387131A1
Authority
EP
European Patent Office
Prior art keywords
tubes
bundle
bun
vibration bars
steam generator
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
EP90400573A
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English (en)
French (fr)
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EP0387131B1 (de
Inventor
Bernard Monnier
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.)
Areva NP SAS
Original Assignee
Framatome SA
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Filing date
Publication date
Application filed by Framatome SA filed Critical Framatome SA
Publication of EP0387131A1 publication Critical patent/EP0387131A1/de
Application granted granted Critical
Publication of EP0387131B1 publication Critical patent/EP0387131B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D7/06—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 the conduits having a single U-bend
    • 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
    • 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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/205—Supporting and spacing arrangements for tubes of a tube bundle
    • F22B37/206—Anti-vibration supports for the bends of U-tube steam generators

Definitions

  • the invention relates to a device for stabilizing the tubes of the bundle of a steam generator comprising antivibration bars interposed between curved parts of the tubes of the steam generator.
  • the steam generators in particular the steam generators of the pressurized water nuclear reactors comprise bent U-shaped tubes having two straight branches crimped at their ends in a tubular plate.
  • the curved parts of the bundle tubes which are juxtaposed at its upper part have radii of curvature different from each other and are placed adjacent to form a structure of substantially hemispherical shape called a bun.
  • the circulation of fluid in contact with the tubes can cause vibrations which are liable to cause damage to these tubes if they are not effectively maintained.
  • the right part of the tubes is engaged in spacers located at regular distances from each other according to the height of the beam. These straight parts are therefore effectively maintained by rigid elements.
  • the curved parts of the bundle tubes constituting the bun must also be maintained and generally used for this, spacer bars which are interposed between the adjacent tubes of the bundle and arranged in substantially radial directions of the bun. These spacer bars are generally connected two by two in an articulated manner at one of their ends arranged towards the inside of the bun and placed in an angular manner to form V-shaped structures.
  • the ends of the antivibration bars opposite their articulated ends are generally projecting from the tubes constituting the outer layer of the bun.
  • Anti-takeoff stabilization devices are also known for the curved parts of the bundle tubes, which consist of stirrups engaged on the last row of tubes and the ends of which protrude from the surface of the bun can be fixed by welding to elements. of maintenance of anti-vibration bars located for example in meridian planes.
  • Structures are also known for holding the tubes of a steam generator in the area of the bun constituted by arches in the form of ring portions surrounding the external surface of the bun and arranged along meridian planes of the bun all passing through the same diameter parallel to the rows of tubes.
  • the arches have cutouts allowing them to adapt perfectly to the upper shape of the bun and are rigidly connected together by hoops of direction perpendicular to the arches which are screwed onto these arches.
  • the whole of the arches and the hoops constitutes a structure which rests freely on the bun. This structure is maintained on the bun, under the effect of its own weight.
  • the object of the invention is therefore to propose a device for stabilizing the tubes of the bundle of a steam generator comprising antivibration bars inserted between curved parts of the tubes of the steam generator bent in a U shape, these tubes having two straight crimped arms at their ends in a tubular plate, the curved parts of the bundle tubes having radii of curvature different from each other and being placed adjacent to form a substantially hemispherical structure called a bun and separated by anti-vibration bars arranged in substantially radial directions each between the curved parts of the bundle tubes in adjacent position and shaped arches ring portions surrounding the surface of the bun, arranged in planes all passing through the same diameter of the bun and connected by hoops perpendicular to the arches, this stabilization device making it possible to quickly and easily fix the anti-vibration bars on the structure formed by hoops and hoops.
  • each of the hoops comprises a plurality of fixing brackets integral with the hoops of direction perpendicular to the hoops and relative to the anti-vibration bars which are each fixed by an external end to a bracket or a hoop by mechanical screwing means .
  • the envelope 2 contains the bundle of tubes of the steam generator constituted by tubes 5 bent in a U shape and comprising, at their upper part, semicircular hangers with radius of curvature decreasing from the outside to the inside and constituting the steam generator bun.
  • the straight parts 5a of the bundle tubes are crimped at their ends in the tube plate 3, so as to open into a water box 7 in two parts separated by a partition 8.
  • the pressurized water from the nuclear reactor enters one of the parts of the water box 7 through an inlet pipe 6a, flows through the tubes of the bundle then exits through an outlet pipe 6b.
  • the bundle of tubes 5 is surrounded by a bundle envelope 9 making it possible to channel the feed water entering the envelope of the steam generator by an inlet pipe 11.
  • the feed water of the steam generator circulates first from top to bottom in the annular space located around the bundle envelope 9 then from bottom to top in contact with the tubes 5 of the bundle so as to heat up then to vaporize and to come out in the form of vapor by the upper tube 12 of the steam generator.
  • the upper part of the bundle of tubes 5 is constituted by the juxtaposition of hangers of semi-circular shape whose radii are decreasing from the outside towards the inside of the bundle.
  • the different successive layers of tubes of the bundle parallel to the central layer shown in FIG. 1 include hangers of decreasing diameter, so that the upper part of the bundle constitutes a substantially hemispherical assembly called a bun.
  • the rectilinear part 5a of the tube 5 is held by spacer plates 10 which prevent the tubes from being vibrated when the steam generator is in operation, under the effect of the circulation of exchange fluids.
  • the curved parts of the tubes situated at the upper end of the bundle are held by anti-vibration bars 15 formed in the form of compasses hinged at their inner end 15a and introduced between the successive rows of tubes 5 at the level of the hangers.
  • the device for holding the upper part of the bundle comprises arches 16 on which brackets 17 are fixed perpendicular to the arches.
  • the arches are arranged substantially along diametrical planes of the bun all passing through the same diameter corresponding to the transverse direction of the beam parallel to the water street disposed between the small hangers in the internal part of this beam.
  • the arches 16 have cutouts and deflections allowing them to adapt to the external shape of the bun.
  • the arches 16 are interconnected by hoops 18 bolted to the arches and which maintain the entire structure of the arches which rests on the upper end of the bun.
  • the holding assembly constituted by the arches 16 and the hoops 18 is held on the bun, under the effect of its own weight.
  • Certain anti-vibration bars 5 are connected directly to the hoops 18 by screw connections which will be described in more detail in the following text.
  • the hoops 18 have a shape of an arc and are arranged in parallel vertical planes to the layers of tubes.
  • FIG. 6 a first type of bracket 17 is seen allowing the fixing of an anti-vibration bar 15, the bracket 17 being connected by screw connections 20 at the end of a hoop 16.
  • the anti-vibration bar 15 On the bracket 17 is fixed a pin 21 and the anti-vibration bar 15 carries an end cap 22 which can be engaged laterally on the pin 21.
  • the tightening and fixing of the anti-vibration bar is ensured by a screw and cup assembly 23 ensuring the tightening of two jaws of the yoke 22 on the journal 21.
  • the screw head is blocked in rotation by a cup which can be folded down in cavities in the screw head.
  • the bracket 17 ′ allows the attachment of two anti-vibration bars 15a and 15b by means of yokes 22a and 22b engaged on corresponding pins 21a and 21b integral with the yoke 17 ′.
  • the anti-vibration bars are engaged laterally on the corresponding pins 21a, 21b and clamped in place by screw connections 23a and 23b.
  • Certain anti-vibration bars 15 are fixed to a pin secured to a hoop 18.
  • the assembly of the holding structure constituted by the arches 16, the hoops 18 and the brackets for fixing the anti-vibration bars is integral with the set of anti-vibration bars which constitute a structure of great stability resting on the part top of the steam generator bun.
  • a retaining stirrup 25 constituted in the form of a comb, the successive spaces 26 of which are inserted between two successive teeth 27 have a width slightly greater than the diameter of the tubes 5 of the steam generator.
  • the comb 25 has end portions 28 pierced with fixing holes 29 and each of the teeth 27 likewise has an oblong hole 30 allowing the fixing of the comb below the last row of tubes of the steam generator, as will be explained below,
  • the upper row 31 of the hangers of the tubes 5 of the bundle comprises a number of hangers identical to the number of spaces 26 located between the teeth of the peinge 25.
  • the comb 25 can be used to hold the anti-vibration bars anti-take-off by being slid in a horizontal position below the row 31 so that the spaces 26 correspond to the positions of the upper hangers of the tubes 5.
  • the comb 25 is then turned 90 ° upwards so that its end portions 28 and its teeth 27 come into coincidence with one face of the arch 16 located immediately above the row of hangers 31.
  • the roll bar 16 has ve holes coming in coincidence with the holes 29 and pins coming in coincidence with the holes 27 for the positioning and fixing by screwing of the comb on the hoop 16.
  • the comb 25 thus provides anti-theft retention of the anti-vibration bars.
  • the positioning and fixing of the comb can be carried out quickly and efficiently, without requiring any welding operation.
  • the structure constituted by the hoops and the hoops may be different from that which has been described and may include any number of hoops or hoops. It is possible, in particular, to use more than two hoops in one or more parts.
  • the comb-shaped stirrups will preferably be placed on the arches located towards the center of the steam generator's bun, but it is also possible to have such anti-take-off stirrups on all the arches of the holding structure.
  • the invention applies to all steam generators comprising an upper part constituting a bun of substantially hemispherical shape on which is placed a holding structure comprising hoops and hoops.

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)
  • Treatment Of Fiber Materials (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Supports For Pipes And Cables (AREA)
EP90400573A 1989-03-09 1990-03-01 Vorrichtung zur Stabilisierung von Rohren eines Dampferzeugerrohrbündels mit schwingungsneutralisierenden Stangen Expired - Lifetime EP0387131B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903099 1989-03-09
FR8903099A FR2644281B1 (fr) 1989-03-09 1989-03-09 Dispositif de stabilisation des tubes du faisceau d'un generateur de vapeur comportant des barres antivibratoires

Publications (2)

Publication Number Publication Date
EP0387131A1 true EP0387131A1 (de) 1990-09-12
EP0387131B1 EP0387131B1 (de) 1993-05-12

Family

ID=9379532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400573A Expired - Lifetime EP0387131B1 (de) 1989-03-09 1990-03-01 Vorrichtung zur Stabilisierung von Rohren eines Dampferzeugerrohrbündels mit schwingungsneutralisierenden Stangen

Country Status (9)

Country Link
US (1) US5042433A (de)
EP (1) EP0387131B1 (de)
JP (1) JPH02290404A (de)
KR (1) KR900014811A (de)
CN (1) CN1045481A (de)
CA (1) CA2011770A1 (de)
DE (1) DE69001572D1 (de)
FR (1) FR2644281B1 (de)
ZA (1) ZA901705B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994004869A1 (de) * 1992-08-13 1994-03-03 Siemens Aktiengesellschaft Manipulator zur inspektion schwer zugänglicher stellen eines dampferzeugers

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684172B1 (fr) * 1991-11-27 1993-12-31 Framatome Echangeur de chaleur, a tubes en u equipes d'un dispositif de supportage anti-envol.
FR2709174B1 (fr) * 1993-08-20 1995-11-17 Framatome Sa Echangeur de chaleur comportant des moyens de maintien de barres antivibratoires intercalés entre les tubes du faisceau de l'échangeur.
FR2731508B1 (fr) * 1995-03-09 1997-05-09 Framatome Sa Echangeur de chaleur, a tubes en u, equipe d'un dispositif de calage des tubes, antivibratoire et anti-envol
DE59708896D1 (de) * 1997-10-09 2003-01-16 Alstom Switzerland Ltd Niederdruck-Speisewasservorwärmer
US8695688B2 (en) * 2007-07-18 2014-04-15 Babcock & Wilcox Canada Ltd. Nubbed U-bend tube support
JP5055165B2 (ja) * 2008-02-29 2012-10-24 三菱重工業株式会社 蒸気発生器
US9697919B2 (en) * 2010-12-29 2017-07-04 Westinghouse Electric Company, Llc Anti-vibration tube support plate arrangement for steam generators
US20140014295A1 (en) * 2011-06-28 2014-01-16 Mitsubishi Heavy Industries, Ltd. Steam generator
JP5901266B2 (ja) * 2011-12-12 2016-04-06 三菱重工業株式会社 蒸気発生器
US20140014294A1 (en) * 2012-07-13 2014-01-16 Areva Np Inc. U-Bend Tube Compression/Distortion Stabilization System (CDSS)
US20140116360A1 (en) * 2012-10-31 2014-05-01 Westinghouse Electric Company Llc Method and apparatus for securing tubes in a steam generator against vibration
CN103868051B (zh) * 2012-12-13 2015-08-26 中国核动力研究设计院 压水堆核电厂蒸汽发生器用分列式防振条结构
US9905953B1 (en) 2016-09-30 2018-02-27 Slobodan Pavlovic High power spring-actuated electrical connector
CN106765024B (zh) * 2016-11-24 2019-09-13 中广核工程有限公司 核电厂蒸汽发生器防振条结构
CH716093B1 (de) 2018-02-26 2023-12-29 Royal Prec Products Llc Federbetätigter elektrischer Steckverbinder für Hochleistungsanwendungen.
CN112956084B (zh) 2018-06-07 2023-10-03 皇家精密制品有限责任公司 具有内部弹簧部件的电连接器组件
CN113508498A (zh) 2019-01-21 2021-10-15 皇家精密制品有限责任公司 具有无螺栓汇流排系统的配电组件
US11721942B2 (en) 2019-09-09 2023-08-08 Eaton Intelligent Power Limited Connector system for a component in a power management system in a motor vehicle
CN114787815A (zh) 2019-09-09 2022-07-22 伊顿智能动力有限公司 具有可读和可记录标记的连接器记录系统
DE112021003303T5 (de) 2020-07-29 2023-05-25 Eaton Intelligent Power Limited Elektrisches verbindungssystem mit zylindrischem klemmenkörper

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB2175078A (en) * 1985-05-17 1986-11-19 Nat Nuclear Corp Ltd Heat exchanger with antivibration structure
EP0214812A2 (de) * 1985-09-06 1987-03-18 Westinghouse Electric Corporation Apparat zum Einbauen einer schwingungsneutralisierenden Stange

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CH612496A5 (de) * 1976-09-01 1979-07-31 Sulzer General Sgx Atomic Waer
US4590991A (en) * 1984-01-09 1986-05-27 Westinghouse Electric Corp. Flexible stabilizer for degraded heat exchanger tubing
JPS60245999A (ja) * 1984-05-21 1985-12-05 Hokkaido Electric Power Co Inc:The 熱交換器
DE3509177C1 (de) * 1985-03-14 1986-10-02 Brown Boveri Reaktor GmbH, 6800 Mannheim Einrichtung zum Einbringen eines zylindrischen Koerpers,insbesondere einer Huelse,in ein Rohr eines Dampferzeugers
US4747373A (en) * 1986-04-24 1988-05-31 Westinghouse Electric Corp. Method and apparatus for minimizing antivibration bar gaps of a steam generator
US4753197A (en) * 1987-12-10 1988-06-28 The Babcock & Wilcox Company Tube support
US4895204A (en) * 1987-12-24 1990-01-23 Foster Wheeler Energy Corporation Tube support vibration suppression device and method
US4893671A (en) * 1988-06-20 1990-01-16 Westinghouse Electric Corp. Steam generator tube antivibration apparatus and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175078A (en) * 1985-05-17 1986-11-19 Nat Nuclear Corp Ltd Heat exchanger with antivibration structure
EP0214812A2 (de) * 1985-09-06 1987-03-18 Westinghouse Electric Corporation Apparat zum Einbauen einer schwingungsneutralisierenden Stange

Non-Patent Citations (1)

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Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 115 (M-474)(2172) 30 avril 86, & JP-A-60 245999 (HOTSUKAIDOU DENRIYOKU) 5 décembre 85, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994004869A1 (de) * 1992-08-13 1994-03-03 Siemens Aktiengesellschaft Manipulator zur inspektion schwer zugänglicher stellen eines dampferzeugers

Also Published As

Publication number Publication date
CN1045481A (zh) 1990-09-19
FR2644281A1 (fr) 1990-09-14
DE69001572D1 (de) 1993-06-17
KR900014811A (ko) 1990-10-25
EP0387131B1 (de) 1993-05-12
JPH02290404A (ja) 1990-11-30
US5042433A (en) 1991-08-27
ZA901705B (en) 1991-10-30
FR2644281B1 (fr) 1991-06-07
CA2011770A1 (fr) 1990-09-09

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