DE102010001721B3 - Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes - Google Patents
Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes Download PDFInfo
- Publication number
- DE102010001721B3 DE102010001721B3 DE102010001721A DE102010001721A DE102010001721B3 DE 102010001721 B3 DE102010001721 B3 DE 102010001721B3 DE 102010001721 A DE102010001721 A DE 102010001721A DE 102010001721 A DE102010001721 A DE 102010001721A DE 102010001721 B3 DE102010001721 B3 DE 102010001721B3
- Authority
- DE
- Germany
- Prior art keywords
- spinning
- spider
- arms
- arm
- control element
- 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.)
- Expired - Fee Related
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/117—Clusters of control rods; Spider construction
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/18—Manufacture of control elements covered by group G21C7/00
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- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Steuerelement für ein Brennelement eines Druckwasserkernreaktors, wie es beispielsweise aus der
Der typische Aufbau eines solchen Steuerelementes ist in
Beim Einsatz eines solchen Steuerelementes kann es dabei im ungünstigsten Fall, beispielsweise durch Fehler bei der Handhabung, vorkommen, dass ein Steuerstab
Der Erfindung liegt nun daher die Aufgabe zu Grunde, ein Steuerelement für ein Brennelement eines Druckwasserreaktors anzugeben, bei dem das vorstehend genannte Problem vermieden ist.The invention is therefore based on the object to provide a control element for a fuel assembly of a pressurized water reactor, in which the above-mentioned problem is avoided.
Die genannte Aufgabe wird gemäß der Erfindung gelost mit einem Steuerelement mit den Merkmalen des Patentanspruches
Durch eine solche sichere Fixierung wird verhindert, dass im Falle eines an der Oberseite des Spinnenknotens erfolgenden Bruches des Steuerstabes die Mutter vom Spinnenarm abfallen kann.Such a secure fixation prevents the mother from falling off the spider arm in the event of a rupture of the control rod at the top of the spider knot.
Das Anschweißen eines solchen Zwischenstücks kann auch nachträglich mit geringem Zeitaufwand bei bereits in Betrieb befindlichen Steuerelementen durchgeführt werden.The welding of such an intermediate piece can also be carried out subsequently with little time in already in operation controls.
Insbesondere ist das Zwischenstück an der schmalen Längsseite des Spinnenarmes mit diesem ohne Überstand quer zur Radialrichtung verschweißt. Auf diese Weise wird durch das Zwischenstück der Strömungswiderstand des Steuerelementes in Axialrichtung praktisch nicht beeinflusst.In particular, the intermediate piece is welded to the narrow longitudinal side of the spider arm with this without projection transversely to the radial direction. In this way, the flow resistance of the control element in the axial direction is practically not influenced by the intermediate piece.
Wenn bei einem Spinnenarm zwei Steuerstäbe mit jeweils einer Mutter fixiert sind, und das Zwischenstück zwischen den beiden Muttern angeordnet ist und beide Muttern am Spinnenarm fixiert, können mit einem Zwischenstück zugleich zwei Muttern gesichert werden. Dadurch ist der Zeitaufwand für die Fixierung der Muttern reduziert, der insbesondere bei Nachrüstungen an bereits gebrauchten Steuerelementen kritisch ist.If two control rods are each fixed with a nut in a spider arm, and the intermediate piece between the two nuts is arranged and fixed both nuts on the spider arm, two nuts can be secured with an intermediate piece at the same time. As a result, the time required for the fixing of the nuts is reduced, which is particularly critical for retrofits to already used controls.
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnungen verwiesen. Es zeigen:For further explanation of the invention reference is made to the drawings. Show it:
Gemäß
Der
Bei den in
Alternativ hierzu ist in
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010001721A DE102010001721B3 (en) | 2010-02-09 | 2010-02-09 | Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010001721A DE102010001721B3 (en) | 2010-02-09 | 2010-02-09 | Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010001721B3 true DE102010001721B3 (en) | 2011-06-09 |
Family
ID=43972713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010001721A Expired - Fee Related DE102010001721B3 (en) | 2010-02-09 | 2010-02-09 | Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010001721B3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113409965A (en) * | 2021-06-17 | 2021-09-17 | 中国核动力研究设计院 | Integrated control rod assembly star frame and control rod assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2603732A1 (en) * | 1975-02-12 | 1976-08-26 | Asea Atom Ab | LOCKABLE NUT ARRANGEMENT |
DE9105355U1 (en) * | 1991-04-30 | 1991-07-04 | Siemens Ag, 8000 Muenchen, De |
-
2010
- 2010-02-09 DE DE102010001721A patent/DE102010001721B3/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2603732A1 (en) * | 1975-02-12 | 1976-08-26 | Asea Atom Ab | LOCKABLE NUT ARRANGEMENT |
DE9105355U1 (en) * | 1991-04-30 | 1991-07-04 | Siemens Ag, 8000 Muenchen, De |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113409965A (en) * | 2021-06-17 | 2021-09-17 | 中国核动力研究设计院 | Integrated control rod assembly star frame and control rod assembly |
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Legal Events
Date | Code | Title | Description |
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R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20110910 |
|
R082 | Change of representative |
Representative=s name: MOERTEL, ALFRED, DIPL.-PHYS. DR.RER.NAT., DE |
|
R081 | Change of applicant/patentee |
Owner name: AREVA GMBH, DE Free format text: FORMER OWNER: AREVA NP GMBH, 91052 ERLANGEN, DE Effective date: 20131112 |
|
R082 | Change of representative |
Representative=s name: MOERTEL, ALFRED, DIPL.-PHYS. DR.RER.NAT., DE Effective date: 20131112 Representative=s name: MEISSNER BOLTE & PARTNER GBR, DE Effective date: 20131112 Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE Effective date: 20131112 |
|
R082 | Change of representative |
Representative=s name: MEISSNER BOLTE & PARTNER GBR, DE Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE |
|
R082 | Change of representative |
Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |