DE1551510A1 - Heat exchanger for integrated nuclear power plants - Google Patents

Description

PATE NTAN WALT

Dipl. Ing. B. WOODEN 89 ApO * UT 'I! O

PBIUPPlJiB-WEOSKU-STBASSK-14

B, 3

¹ "... ■ 89 Augsburg, May 26, 1967

(jociete Fr-yiicaise des Constructions Babcock &. ./ilcox. .48, Rüe La'Boetie 75 Paris Some, France

Heat exchangers for integrated nuclear power plants

It is known that T with integrated nuclear power plants The heat exchangers are arranged within a casing "or within a shield, through which the pipes for supplying feed water to the heat exchanger and extend to discharge the steam to the turbines.

These are generally single or multiple

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Implementations through the. Ignition of the shield dz. · ,, the jacket for the passage of the pipes for the steam and the "water supply intended", These are on the one hand r.:it the K ·: ■ up t collector η for ds 3 ".Yasser or f ^: ir the D-Lxf and on the other hand connected to the individual tubes of the .Vlrir.er-UHu-DUoCher tube bundle.

However, this construction results in a complicated pipe network between the individual drilling and the aammlerne. Another disadvantage of this construction is that in the event of a 'malfunction? Η one of the' can, y / man hen after shutdown of the reactor in d ^r -s interior of the shield and the jacket moves ;.

Furthermore, in the case of integrated nuclear power notes, a Construction known, according to richer the pipes of a 7 / poor- ■ The sheathing in the area of the feed water supply to the inside and in the area of the exchanger Steam off lead to on; en penetrate, '.vc bei a tube sheet ■ is used, which is a transverse through the Ummantelungav / andung extending casing closes.

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The present invention "aims at simplification the execution of such a construction and a simplification of the Bausteilemontgge of .Türme exchange with separate inlet and outlet pipes each * .veils in Umitisintelungsbehaltern r.us concrete, which are not to Prefabrication is suitable and has a thickness of up to several. IvIe tern may have thickness.

In terms of solving this problem, the invention includes a. ₍ 'Ilrmeaustauscher for mounting integrated within the concrete shell ILernkraftv / erke which -through rm a passage for the nustauscherrohre in Jj ¹ O of an extending feed is characterized by the inner öchale of the concrete shell, -, Velch latter is closed off by a tube plate, in - "calibrate the. Exchanger tubes are each inserted individually.

Such a construction facilitates contage such a heat exchanger quite considerably. It enables the provision of a prefabricated via heat exchanger element, which consists of a tube sheet with corresponding heat exchanger tubes welded into it.

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This .. "is ärmeaustauscherelement then inserted into a butter which is in turn v.'orden previously arranged in such a way in the casing of the Reaktorbehelters, Dae it your through the Innensch ^ this sheath le hindurcherstr.eckt, after which the .VL'rmesustauscherelement example connected to the lining by stranding ..- oiPen ₀

If the tube sheet is in the lower part or iir. Located in the middle part of the lining, the construction according to the invention enables the provision of a prefabricated element which consists of a tube sheet, the associated heat exchanger tubes and a lining which is provided with a flange in the upper part. The named "heat exchanger element" is arranged in a feedthrough opening, which extends through the inner clips of the reactor jacket, so that the flange of the chuck is supported on the lining for sealing the inner lining and is firmly attached to it. EIET v; _e can ground-discussed According to one embodiment of the invention has at the feed in a continuous Fammer, v / hich over the outer surface of the cladding plate extends past and their "Vajidung up a Anzshl of tubesheet

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V-Oist, each with a /.'ürmeaustauscher-Hohrbündel are connected. This achieves that by means of a single passage through the casing of the A separate reactor for several tube bundles Access or «. Exit to or from the interior of the Seaktor created will ο

Particular concepts and advantages of the invention result See the rest of the following description of some embodiments with reference to the enclosed Drawings. In these drawings show:

Figure 1 shows a section through an embodiment of the invention, which the introduction or the Atisführung of ".Värmeaustauscherrohren shows,

FIG. 2 shows a horizontal section along the plane II-II indicated in FIG. 1 and FIG

Figure 3 shows a section through a further Aus ~ embodiment of the invention.

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V.'ie can be seen from Figure 1 of the drawings, extends through the inner step 1 of the Betor.achildes of an integrated nuclear power plant in view of:, · ^ndat: 'rke of this shield, a steel lining 2, which in the area of its lower part a tube sheet 3 is completed. The heat exchanger tubes 4 - are each passed separately through the tube sheet 3 and their connections 5 load directly with a collector 8 for water or for fuel connection.

The collector 6 has a below the tube plate 3 Extension to, which forms a revision chamber 7, in which a revision opening 8 is provided i ^ t through which the tube sheet 3 is accessible.

The division v; Formations 9 »v / which suf the down v / iron surface 20 of the tube sheet 3 are arranged, divide the individual tube mouths 5 for the inlet of the feed water "or the outlet for the steam in several groups. The reference numerals 11 and 12 each designate an inner insulating clothing of the lining 2 and a network of Eülilrohren, which is located in the concrete of the shell 1 on the outside of the casing.

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D.-5S Chuck 2 supports with an upper flange 2c ge ^ en the sealing lining 1c of the inner cliale 1 of the rfi; tonuinmantel rb _e This construction enables the prefabrication of the arrangement consisting of parts 2, 3 and A Bovie a simple I ' set ontage by A cleaning and barking the flange 2c with the sealing lining Ic «'

Β ·.-If there is a boar at the head of the food, see above hnnn this together with the - .. air exchange tubes already welded to it be delivered to the construction site and the connection of this structural part during assembly only takes place by the fact that the tube sheet is attached to the feed attached and welded to it,

The construction described leads to a strong one Simplification of the external routing of the manifolds for steam or feed water. The immediate Zugeng aur outer surface 10 of the tube sheet 3 allows if necessary The repair of defective 7 / heat exchanger pipes takes place from the outside or their closure.

The inventive department of the tube sheet, which

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reached by the ochikenen 9 ' ^? .ird, makes it easier to identify ochji.den on the pipes. If, for example, one of the 'Värmerusteuscher pipes is leaking, after emptying the'.? sser-T) rmpf S7> from the reactor vessel in a specific part of the tube sheet, delimited by the baffles. determine ./on this part is still being examined tube by tube.

With certain Ees ^ olarten, with ". '/ Calibrate before, every" ίτ. ei sews ss he pipe one. '.. embren must be close associates, the present invention allows "/ else direct access to these Llcmbranen which gegebenenf-ill ζ in simp &cher"",advantageously.' Can Replace else, v / if they are arranged on the inside side or on the outside of the tube sheet.

On the basis of an essential simplification of the external line routing for the steam lines, the invention makes it possible to avoid repair work inside the pressure vessel, which means that biological shielding and ventilation are not required when the machine is at a standstill normally necessary are _o

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According to a modified embodiment for the invention ain.i a lining each; several tube bundles assigned for ',' aaser or for Oamjff, v / whether ei each tube bundle η η a tube sheet connected iat _o The collectors are designed exactly as described above i ^ t, so they rUE a -Jugr.ng - si; call the tube sheet ..

3o, for example, the bus 7ertiic3lschnitt of Figure 3 J.ei ^'1 drawings, since .: a casing Each two systems A mil B are assigned. Each system consists of - .. 'each of the ion structure parts 3, 5, 7 and S which are identified in the above description and which correspond to the structure parts according to FIG. 1. however are additionally designated with the letters of the associated oysteiis, - The Rohrbeden. JA and JB are arranged in openings.

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Claims (1)

.fet ent smells: .. '• irin exchanger for ϋηο ~ · ι; integrated power within the concrete shell. vf r! ·: ■ =, .-. know? .. .i - through the inner nc;, i> le (Ό dec - ^ i tonn.- nt ^ l: ¹ extending Gutters (.ί), v / elches through a ächrboden ' _K J. bzv ;. 3Λ, 33) iat , in velcr.en the fiustf-uscherrohre (^) each'.veilc individually -inserted; -; irrl _a 2o V.'ärineaustauscher nsch claim 1, characterized in that d-, 1; the Aust -., shear tubes (- ^) immediately ^r -; r in a: -. uf der Au.'ensc-ite of the pipe bolt (3 tzv; »: ..:, JB)? subordinate Hevisionski-ianier (7 resp . ^! _o 7 ~ -j 73) randen. 3. 7 / äraeaustauscher nsch.-Ji3T, ruch Λ or 2, characterized in isi. on the itotrbodeneuiien.ieite 'ichikenen (5) are arranged, v / which divide the pipe changes into several groups (iigur 2), '4-0 .. · arms from t su scher according to one of claims 1 to 3 » characterized in that the lining (2) is in shape - 10 - 009815/0717
BATH a chamber (15) to over the .Vühlenfl. ^{: the} surface of the concrete casing (1) continues and that in the ending of this IT.-jnmer iLehrere Eohrboden (? A, 3B) are inserted, with which {jev; eiXs entsrrecr.ende '.YUrmeaustguscherllohrbUndel (A, Ij) connected are (Firnir J) ₀ of .. '' raieaustauschers n ch a?.: dei · '' ί ^ _ο use Π.5Γ rüche ^Λ bii Φ in inte weighed Ivernlirsftv / erken ait ^3etonin-: ntolo 6, method of making, fö arrangements in integrated nuclear power .verken, marked by the following procedural steps a) Provision of a prefabricated. Pre-exchange element with heat exchanger rollers and a tube sheet, b) Inserting this element into a corresponding one Guide chuck and '.... c.) Connect the V / cirmeaustauschereleinentes with the mother. . - 11.- 0098 15/07 17 BATH 1S51510 7c method ni-ci:. '. Nir.ruc hc, c- ivrcl .-. LrWizeichnet, i ~ ■ ~ G' :: ν-: rg · "-: Γ -" - r tiff te ""I'lr . ^ - i ^": · '-; ci <iv J (Ji.f:...; ijt with a ^, a cceren K. ^ n ^ ch ^J r ^ · end LuroLi""Lr jn . · - ■ Putter connected ir I, ^r '·· :: Ιϊχ ^ Γ-τυί dps,' rir.a ^ -tn, ϊοΙ'-γ ol-: L, ' ^: -nt "i ji ^ rch the Inr .cn be.-ie dc ν i ■ ^ "; frl: / ^r -n ^r iun:" erztreckend dtrert in the. . ', e t ir- i * of ^2eh;: LTTR usklftidi7n 3ichtun-23; '1Ii'-Ό ä ^ - - ^ .: icl "the gerannte Fl'iisoL ^ e cn Oine r ^f..!..-'-.? "^ b :: * '" tzt-, and d-:' i ^ r. cn the "! - rioch tit the luslclej.dvi; v: -r. '. o .. ^! ..f? I 't .i 0098 15/07 17 BATH ORIGINAL L eersei f e