SE457675B - HARD CONSTRUCTION FOR REACTOR CELL IMAGE - Google Patents
HARD CONSTRUCTION FOR REACTOR CELL IMAGEInfo
- Publication number
- SE457675B SE457675B SE8406378A SE8406378A SE457675B SE 457675 B SE457675 B SE 457675B SE 8406378 A SE8406378 A SE 8406378A SE 8406378 A SE8406378 A SE 8406378A SE 457675 B SE457675 B SE 457675B
- Authority
- SE
- Sweden
- Prior art keywords
- core
- collar
- boiling water
- drawers
- water reactor
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/02—Details
- G21C5/06—Means for locating or supporting fuel elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Fuel Cell (AREA)
Description
'"4ó 457 675 .2 de beskrivning, som ansluter sig till figurerna på bif08fiÖ6 Pit- ning. Därvid visar fig. 1 en sidovy, delvis 1 genomskärníng, av en kärncell i reaktorkärnan för en kokvattenreaktor. Fig. 2 och 3 visar 1 perspektiv detaljer enligt uppfinningen. Fig. 1 shows a side view, partly in section, of a core cell in the reactor core of a boiling water reactor. Figures 2 and 3 show 1 perspective. details according to the invention.
Reaktorkärnan för en kokvattenreaktor består av bränsleele- ment 1, vilka fyra och fyra är sammanfattade till s.k. kärnceller 2. Dessa har, liksom bränsleelementen 1, kvadratiskt tvärsnitt.The reactor core for a boiling water reactor consists of fuel elements 1, which four and four are summarized as so-called core cells 2. These, like the fuel elements 1, have a square cross-section.
Den mellan bränsleelementen uppkommande slitsen 3 kan upptaga ett inte visat styrelement.The slot 3 emerging between the fuel elements can accommodate a control element (not shown).
Vanligen uppgår bränsleelementets längd och därmed kärnhöj- den till några meter, exempelvis 3,5 m, och är kantlängden på bränsleelementet några centimeter, exempelvis 15 cm, medan bred- den av spalten 3 också rör sig om centimeter, exempelvis 2 cm.Usually the length of the fuel element and thus the core height amounts to a few meters, for example 3.5 m, and the edge length of the fuel element is a few centimeters, for example 15 cm, while the width of the gap 3 also moves about centimeters, for example 2 cm.
Varje bränsleelement 1 sitter med en fotdel H i en kärnplat- te 5, vilken är försedd med bdrrnài för att möjliggöra genomtränz- ning av kylvatten. Vid den övre änden, alltså vid ett bärorgan 8, sträcker sig bränsleelementen igenom ett kärngaller 10, vilket sörjer för styrning av kärncellerna 2 i sidled.Each fuel element 1 is located with a foot part H in a core plate 5, which is provided with bdrrnài to enable permeation of cooling water. At the upper end, i.e. at a support member 8, the fuel elements extend through a core grid 10, which provides for lateral control of the core cells 2.
Bränsleelementen är för styrning av det nedífrån och uppåt strömmande kylvattnet omslutna av lådor 12. Dessa är plåthöljen med en tjocklek av några få millimeter, exempelvis 2 mm, och har ett mot bränsleelementens tvärsnitt svarande kvadratiskt tvär- snitt. De sträcker sig från fotdelen H till i höjd med griporga- net 8. ' Lådorna 12 är vid sin övre ände förbundna med en krage 1H, vilken ligger på kärngallret 10. Denna krage har enligt utförings- exemplet rektangulärt tvärsnitt och består företrädesvis av samma material som lådorna 12, exempelvis av zirkaloy. Därför kan kra- garna 14 förbindas med lådorna 12 genom svetsning, längs den i fig. 1 med 13 betecknade anliggningsytan.The fuel elements are enclosed by boxes 12 for controlling the cooling water flowing from below and upwards. These are sheet metal casings with a thickness of a few millimeters, for example 2 mm, and have a square cross-section corresponding to the cross-section of the fuel elements. They extend from the foot part H to the height of the gripping member 8. The drawers 12 are connected at their upper end to a collar 1H, which rests on the core grid 10. This collar has, according to the exemplary embodiment, a rectangular cross-section and preferably consists of the same material. such as the drawers 12, for example of zirkaloy. Therefore, the collars 14 can be connected to the drawers 12 by welding, along the abutment surface indicated by 13 in Fig. 1.
De nedre ändarna, av lådorna 12 är förbundna med varandra i kärncellens 2 inre med hjälp av ett centreringskors 15, varvid delarna företrädesvis är svetsade samman. exempelvis Vid detta centrerings- kors är en centreringsdorn 16 fäst i mittpunkten, enligt vad fig. 3 visar, där den visade tvärsnittsytan avser kärncellens under- sida. Centreríngsdornen 16 tränger enligt vad som visas i fig. 1 med ett vertikalt spelrum in i ett hål 17 i kärnplattan 5. Sålun- da kommer bränsleelementen 1 som stöder mot bärplattan 5 att vid uppvärmning kunna utvidgas uppåt oberoende av lådorna 12. Dessa, som sitter på kärngallret 10, kan däremot utvidga sig nedåt. 3 457 675 Lådorna 12 i en kärncell 2 kan hanteras oberoende av bränsle- elementen 1 i denna kärncell, exempelvis med en fjärrmanövverbaf' manipulator, som griper in i hål 18 i kragen 111, så att utbyte av bränsleelementen inte förhindras av lådorna 12. Bränsleelemen- ten kan dock även dragas ut ur kärnan medan de fortfarande sitter kvar i lådorna 12. Vidare kan, enligt vad som visas vid den övre ändytan 19 på kragen 11! med streckprickade linjer, en huv 20 med en fläns 21 sättas på, vilken ökar den uppåtriktade strömningen av det kylvatten sem uppvärmts och delvis förångats vid bränsle- elementen. Denna huv kan ligga tätt an med flänsen 21, så att inget kallt kylvatten kan strömma i riktningen av pilarna 22.The lower ends of the drawers 12 are connected to each other in the interior of the core cell 2 by means of a centering cross 15, the parts being preferably welded together. for example, at this centering cross, a centering mandrel 16 is attached to the center point, as shown in Fig. 3, where the cross-sectional area shown refers to the underside of the core cell. As shown in Fig. 1, the centering mandrel 16 penetrates with a vertical clearance into a hole 17 in the core plate 5. Thus, the fuel elements 1 which support the support plate 5 will be able to expand upwards when heated independently of the boxes 12. These, which sit on the core grid 10, on the other hand, can expand downwards. The boxes 12 in a core cell 2 can be handled independently of the fuel elements 1 in this core cell, for example with a remote control manipulator, which engages in holes 18 in the collar 111, so that replacement of the fuel elements is not prevented by the boxes 12. The fuel elements However, they can also be pulled out of the core while they are still in the drawers 12. Furthermore, according to what is shown at the upper end surface 19 of the collar 11! with dash-dotted lines, a hood 20 with a flange 21 is put on, which increases the upward flow of the cooling water which has been heated and partially evaporated at the fuel elements. This hood can fit snugly with the flange 21, so that no cold cooling water can flow in the direction of the arrows 22.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843401272 DE3401272A1 (en) | 1984-01-16 | 1984-01-16 | Boiling water reactor |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8406378D0 SE8406378D0 (en) | 1984-12-14 |
SE8406378L SE8406378L (en) | 1985-07-17 |
SE457675B true SE457675B (en) | 1989-01-16 |
Family
ID=6225055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8406378A SE457675B (en) | 1984-01-16 | 1984-12-14 | HARD CONSTRUCTION FOR REACTOR CELL IMAGE |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE3401272A1 (en) |
SE (1) | SE457675B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2614128B1 (en) * | 1987-04-15 | 1992-06-12 | Electricite De France | ASSISTANCE TOOL FOR LOADING FUEL ASSEMBLIES OF A 1300 MW PRESSURIZED WATER NUCLEAR REACTOR |
DE3723730A1 (en) * | 1987-07-17 | 1989-01-26 | Siemens Ag | Nuclear reactor with a core removably assembled from individual fuel assemblies, and with a liquid coolant |
DE3728488C2 (en) * | 1987-08-26 | 1995-03-30 | Siemens Ag | Nuclear reactor with a core releasably composed of individual fuel elements and with a liquid coolant |
FR2848328B1 (en) * | 2002-12-10 | 2005-08-19 | Framatome Anp | METHOD AND APPARATUS FOR LOADING A FUEL ASSEMBLY INTO THE HEART OF A NUCLEAR REACTOR |
-
1984
- 1984-01-16 DE DE19843401272 patent/DE3401272A1/en not_active Withdrawn
- 1984-12-14 SE SE8406378A patent/SE457675B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8406378L (en) | 1985-07-17 |
DE3401272A1 (en) | 1985-07-18 |
SE8406378D0 (en) | 1984-12-14 |
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Legal Events
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NUG | Patent has lapsed |
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