NL8302854A - Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression - Google Patents

Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression Download PDF

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Publication number
NL8302854A
NL8302854A NL8302854A NL8302854A NL8302854A NL 8302854 A NL8302854 A NL 8302854A NL 8302854 A NL8302854 A NL 8302854A NL 8302854 A NL8302854 A NL 8302854A NL 8302854 A NL8302854 A NL 8302854A
Authority
NL
Netherlands
Prior art keywords
feed water
steam
heat exchanger
tube
nuclear reactor
Prior art date
Application number
NL8302854A
Other languages
Dutch (nl)
Original Assignee
Babcock & Wilcox Co
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 Babcock & Wilcox Co filed Critical Babcock & Wilcox Co
Priority to NL8302854A priority Critical patent/NL8302854A/en
Publication of NL8302854A publication Critical patent/NL8302854A/en

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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
    • F28D7/02—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 being helically coiled
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0054—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for nuclear applications

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  • 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)

Abstract

Heat exchanger, partic. for incorporation in the pressure vessel of a nuclear reactor, comprises (a) a steam collector spaced from a feed water collector, by means of two tube plates connected by a series of longitudinal steam-producing tubes so as to form a fluid connection between the feed water and steam collectors or chambers; (b) a series of spacing grids arranged transversely in contact with the steam-producing tubes, with elastic lugs formed on the grids in such a way as to come into contact with the tube surfaces and limit their vibration; (c) a feed water tube traversing the steam chamber to establish fluid communication with the feed water chamber, and having an external concentric casing fixed to the tube plates.

Description

- —- -

Korte Aanduiding: Groep modulaire warmtewisselaars.Brief Designation: Group of modular heat exchangers.

* -1- 23391/CV/tl* -1- 23391 / CV / tl

De uitvinding heeft betrekking op een groep modulaire warmtewisselaars, waarbij ieder van de warmtewisselaars is voorzien van een stoomkop, 5 een voedingswaterkop en van tussen de beide koppen gelegen stooraopwek-pijpen,terwijl op de voedingswaterkop een voedingswaterbuis ,welke is gevoerd door de stoomkop,is aangesloten. Een dergelijke groep modulaire warmtewisselaars is bijvoorbeeld aangebracht in het drukvat van een kernreactor boven de reactorkern. Een primair koelmiddel stroomt daarbij 10 door de reactorkern en langs de buitenzijde van de stoomopwekpijpen van de verschillende warmtewisselaars,terwijl door deze stoomopwekpijpen een secondair koelmiddel wordt gevoerd. Daarbij stroomt het aan de warmtewisselaars toegevoerde verhoudingsgewijs koude secondaire koelmiddel door in de stoomruimte aangebrachte toevoerbuizen.Daarbij is 15 het gewenst,dat vermeden wordt,dat door de optredende temperatuurverschillen ongewenste spanningen in de diverse onderdelen van de installatie optreden.The invention relates to a group of modular heat exchangers, wherein each of the heat exchangers is provided with a steam head, a feed water head and of disturbance generating pipes located between the two heads, while on the feed water head a feed water tube, which is passed through the steam head connected. Such a group of modular heat exchangers is arranged, for example, in the pressure vessel of a nuclear reactor above the reactor core. A primary coolant flows through the reactor core and along the outside of the steam generating pipes of the various heat exchangers, while a secondary coolant is passed through these steam generating pipes. The relatively cold secondary coolant supplied to the heat exchangers flows through supply pipes arranged in the steam room. It is desirable to avoid undesired stresses occurring in the various parts of the installation due to the temperature differences occurring.

Volgens de uitvinding kan dit worden bereikt doordat althans de voe-dingswaterbuizen van enige van de warmtewisselaars zijn aangesloten op 20 een voedingswaterverdeelstuk met behulp van spiraalvormig verlopende buizen.According to the invention this can be achieved in that at least the feed water pipes of some of the heat exchangers are connected to a feed water manifold by means of spiral pipes.

Door de spiraalvormige Uitvoering van de buizen kunnen deze buizen gemakkelijk uitzet en krimpbewegingen veroorzaakt door temperatuurverschillen opvangen.Due to the spiral design of the pipes, these pipes can easily expand and absorb shrinkage movements caused by temperature differences.

• 25 De uitvinding_zal hieronder nader worden uiteengezet aan de hand van bijgaande figuur waarin schematisch een warmtewisselaar met aansluitingen gedeeltelijk in zijaanzicht en gedeeltelijk in doorsnede zijn weergegeven.The invention will be explained in more detail below with reference to the appended figure, in which a heat exchanger with connections are shown partly in side view and partly in section.

In de figuur is een groep 114 van warmtewisselaars weergegeven, 30 waarbij iedere warmtewisselaar is voorzien van een voedingswaterkop 105, een/'ui^laatkop 102 en zich daartussen uitstrekkende stoomopwekpijpen.The figure shows a group 114 of heat exchangers, each heat exchanger being provided with a feed water head 105, an outlet head 102 and steam generating pipes extending therebetween.

Verder is voor ieder van de warmtewisselaars een voedingswaterbuis 100 aangebracht,welke zich door de desbetreffende stoomkop 102 uitstrekt en op de voedingswaterkop 105 is aangesloten. Iedere voedingswaterbuis is 35 in het weergegeven uitvoeringsvoorbeeld met behulp van een spiraalvormig verlopende buis 110 aagesloten op een eveneens in het drukvat gelegen 8302854 -2- 23391/CV/tl yv- * * voedingswaterverdeelstuk 113.Furthermore, a feed water pipe 100 is provided for each of the heat exchangers, which extends through the respective steam head 102 and is connected to the feed water head 105. In the exemplary embodiment shown, each feed water tube is connected to a 8302854 -2- 23391 / CV / tl yv- * * feed water manifold 113 with the aid of a spirally extending tube 110.

De stoomkoppen 102 zijn met behulp van verbindingsleidingen 115 aangesloten op een stoomkamer 111,welke rechtstreeks is bevestigd aan de binnenwand}van het drukvat van de kernreactor.Daarbij strekken de i 5 leidingen 115 zich door de door de buizen gevormde windingen 110 uit.The steam heads 102 are connected by means of connecting lines 115 to a steam chamber 111, which is directly attached to the inner wall of the pressure vessel of the nuclear reactor, the lines 115 extending through the windings 110 formed by the tubes.

Het zal duidelijk zijn,dat door deze uitvoering de buizen waardoorheen het verhoudingsgewijs koude koelmedium wordt toegevoerd zich onder invloed van eventueel optredende temperatuurschommelingen en daardoor veroorzaakte uitzettingen of krimpingen gemakkelijk kunnen bewegen ten 10 opzichte van de overige onderdelen van het in fig.2 afgeheelde systeem.It will be clear that, through this embodiment, the pipes through which the relatively cold cooling medium is supplied can move easily under the influence of temperature fluctuations which may occur and expansions or shrinkage caused thereby, relative to the other parts of the system shown in Fig. 2.

83028548302854

Claims (1)

CONCLUSIE. -3- 23391/CV/tl 1 > Groep nodulaire warmtewisselaars,waarbij ieder van de warmtewisselaars is voorzien van een stoomkop,een voedingswaterkop en van tussen de beide koppen gelegen stoomopwekpijpen,terwijl op de voedingswaterkop een voedigswaterbuis ,welke is gevoerd door de stoomkop,is 5 aangesloten ,met het kenmerk,dat althans de voedingswaterbuizen van enige-van de warmtewisselaars zijn aangesloten op ëen voedingswaterverdeelstuk met behulp varr spiraalvormig verlopende buizen. * 8302854CONCLUSION. -3- 23391 / CV / tl 1> Group of ductile heat exchangers, each of the heat exchangers being provided with a steam head, a feed water head and steam generating pipes located between the two heads, while on the feed water head a feed water tube, which is passed through the steam head, is connected, characterized in that at least the feed water pipes of some of the heat exchangers are connected to a feed water manifold by means of spirally extending pipes. * 8302854
NL8302854A 1983-08-15 1983-08-15 Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression NL8302854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL8302854A NL8302854A (en) 1983-08-15 1983-08-15 Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8302854A NL8302854A (en) 1983-08-15 1983-08-15 Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression
NL8302854 1983-08-15

Publications (1)

Publication Number Publication Date
NL8302854A true NL8302854A (en) 1983-12-01

Family

ID=19842269

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8302854A NL8302854A (en) 1983-08-15 1983-08-15 Modular heat exchanger - for steam generation in a nuclear reactor, with tube vibration suppression

Country Status (1)

Country Link
NL (1) NL8302854A (en)

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BN A decision not to publish the application has become irrevocable