DE3119266A1 - Absorber rod having an articulated grabhead - Google Patents
Absorber rod having an articulated grabheadInfo
- Publication number
- DE3119266A1 DE3119266A1 DE19813119266 DE3119266A DE3119266A1 DE 3119266 A1 DE3119266 A1 DE 3119266A1 DE 19813119266 DE19813119266 DE 19813119266 DE 3119266 A DE3119266 A DE 3119266A DE 3119266 A1 DE3119266 A1 DE 3119266A1
- Authority
- DE
- Germany
- Prior art keywords
- absorber rod
- gripping head
- articulated
- absorber
- claws
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
-
- 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
-
- 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
- G21C7/12—Means for moving control elements to desired position
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Manipulator (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Description
•81 P 9 4 1 8 DE• 81 P 9 4 1 8 DE
INTERATOM 24.536.4INTERATOM 24.536.4
Internationale Atomreaktorbau GmbH D- 5060 Bergisch Gladbach 1Internationale Atomreaktorbau GmbH D- 5060 Bergisch Gladbach 1
Die vorliegende Erfindung betrifft einen Absorberstab nach dem Oberbegriff des Schutzanspruches. Abschaltvorrichtungen konventioneller Kernreaktoren bestehen üblicherweise aus einer Vielzahl von Absorberstäben, die in starren, zwischen den Brennelementen angeordneten Führungsrohren gleitend an lösbaren Kupplungen aufgehängt sind. Im Normalbetrieb werden die Absorberstäbe an der Kupplung hängend beispielsweise vermittels eines Spindeltriebes mehr oder weniger tief in den Reaktorkern eingefahren. Ist eine Schnellabschaltung des Reaktors erforderlich, werden die Kupplungen gelöst und die Absorberstäbe fallen, durch die Schwerkraft beschleunigt, in den Reaktorkern hinein. Als Kupplungen für die Halterung des Absorberstabes sind Klauenkupplungen vorgeschlagen worden, die in eine Hinterdrehung, den sogenannten Greifkopf des Absorberstabes,eingreifen. Die Betätigung der Kupplung kann durch das Abfallen des Ankers von einem im Abschaltfall stromlos werdenden Elektromagneten bewirkt werden. Eine Abschaltvorrichtung der beschriebenen Art ist aus der DE-OS 20 40 428 bekannt.The present invention relates to an absorber rod according to the preamble of the protection claim. Cut-off devices conventional nuclear reactors usually consist of a large number of absorber rods, the suspended in rigid guide tubes arranged between the fuel assemblies from releasable couplings are. In normal operation, the absorber rods are suspended from the coupling, for example by means of a The spindle drive is retracted more or less deeply into the reactor core. Is a quick shutdown of the reactor required, the couplings are released and the absorber rods fall, accelerated by gravity, into the reactor core. Claw couplings are proposed as couplings for holding the absorber rod been turned into an undercut, the so-called Gripping head of the absorber rod, engage. The clutch can be actuated by the armature falling off an electromagnet that becomes de-energized in the event of a shutdown. A shutdown device of the described Art is known from DE-OS 20 40 428.
Es besteht nun die Gefahr, daß eine der Klauen der Kupplung durch Verklemmen des Auslösemechanismus nicht wie vorgesehen ausschwenkt und daß der Absorber mit seinem Greifkopf an dieser einen Klaue hängenbleibt und nicht in den Reaktorkern hineinfällt; ein Abrutschen des Greifkopfes von der Klaue ist nicht möglich, da der Absorberstab in seinem Führungsrohr keine ausreichende seitliche Ausweichmöglichkeit besitzt.There is now the risk that one of the claws of the clutch will not work as intended due to the release mechanism becoming jammed swings out and that the absorber with its gripping head gets stuck on this one claw and not in the Reactor core falls into; the gripping head cannot slip off the claw because the absorber rod is in its The guide tube does not have sufficient lateral evasion.
06.05.81 We/Pa05/06/81 We / Pa
j β # .j β #.
=81 P 9 4 1 8 DE= 81 P 9 4 1 8 DE
/ & 24.536.4 / & 24.536.4
Aufgabe der vorliegenden Erfindung ist ein Absorberstab, der im Zusammenwirken mit den bekannten Führungsrohren und Auslösemechanismen diese Gefahr vermeidet. 5The object of the present invention is an absorber rod which, in cooperation with the known guide tubes and trigger mechanisms, avoids this risk. 5
Die Lösung der Aufgabe erfolgt durch die im kennzeichnenden Teil des Schutzanspruchs angegebenen Merkmale. Unter dem Einfluß seines Eigengewichtes rutscht der Absorberstab von einer etwa stehengebliebenen Klaue der Kupplung ab, da die Auflageflächen schräg ausgeführt sind und der Greifkopf seitlich soweit ausweichen kann, wie es zum Umgehen der Klaue notwendig ist.The problem is solved by the features specified in the characterizing part of the protection claim. Under the influence of its own weight, the absorber rod slips from a claw that has remained standing the coupling, as the contact surfaces are inclined and the gripping head gives way to the side as necessary to bypass the claw.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und zwar zeigt Figur 1 einen Längsschnitt durch die von der Erfindung betroffenen Teile der Kupplung und des Absorberstabes in unvollständig geöffnetem Zustand undAn embodiment of the invention is shown in the drawing, namely Figure 1 shows a longitudinal section due to the parts of the coupling and the absorber rod affected by the invention in an incompletely open Condition and
Figur 2 einen Schnitt entsprechend der Linie II-II der Fig. 1.Figure 2 shows a section along the line II-II of Fig. 1.
Ein Stab (1) mit einer Füllung aus einem neutronenabsorbierenden Material ist in einem Führungsrohr (2) im hier nicht gezeigten Kernverband eines Reaktors gleitend eingebaut. Er ist an seinem oberen Ende mit einem Greifkopf (3) versehen, der eine Hinterdrehung (4) aufweist. Der Greifkopf (3) ist mit dem Hauptteil des AbsorberStabes (1) mittels eines Kardangelenkes (5) verbunden, das ein Ausschwenken des Greifkopfes aus der Längsachse des Absorberstabes ermöglicht. Während des normalen Reaktorbetriebes wird der Absorberstab durch in die Hinterdre -A rod (1) with a filling made of a neutron-absorbing material is in a guide tube (2) here not shown core assembly of a reactor installed sliding. It is at its upper end with a gripping head (3) provided, which has an undercut (4). The gripping head (3) is with the main part of the absorber rod (1) connected by means of a universal joint (5), which allows the gripping head to pivot out of the longitudinal axis of the Absorber rod allows. During normal reactor operation, the absorber rod is pushed through into the rear
hung (4) eingreifende Klauen (6a, b, c) gehalten, die wiederum durch Anschläge (9) in ihrer Stellung festgestellt werden. Die Anschläge (9) können bei Anstehen des Abschaltbefehls durch einen Hubmagneten (8) oder durch eine andere der zu diesem Zweck bekannten Vorrichtungen angehoben werden, Dabei schwenken die Klauen (6) seitwärts aus und gebenhung (4) engaging claws (6a, b, c) held, which in turn determined by stops (9) in their position will. The stops (9) can be activated by a lifting magnet (8) or another when the switch-off command is pending the devices known for this purpose are raised, the claws (6) swing out sideways and give
-81 P 9 h ί 8 DE-81 P 9 h ί 8 DE
24.536.424.536.4
den Greifkopf (3) frei, so daß der Absorberstab (1) in das Führungsrohr (2) abwärts fallen kann. In der Zeichnung ist der Zustand dargestellt, daß eine der Kupplungsklauen (6a) beispielsweise durch Verklemmen oder eine andere Störung bedingt nicht ausgeschwenkt ist. Da die Auflageflächen des Greifkopfes und der Kupplungsklauen gegen die Horizontale geneigt sind, hat der Greifkopf (3) das Bestreben, unter dem Eigengewicht des Absorberstabesthe gripping head (3) free so that the absorber rod (1) can fall down into the guide tube (2). In the drawing is the state shown that one of the coupling claws (6a) for example by jamming or a other fault is not swiveled out due to the reason. As the contact surfaces of the gripping head and the coupling claws are inclined to the horizontal, the gripping head (3) tends to take the weight of the absorber rod
(1) von der verbliebenen Kupplungsklaue (6a) abzurutschen. Da sich der Greifkopf in dem Kardangelenk (5) drehen kann, nimmt er die durch eine strichpunktierte Linie angedeutete Lage ein und fällt von der Kupplungsklaue (6a) ab.(1) to slip off the remaining coupling claw (6a). As the gripper head rotates in the universal joint (5) can, he assumes the position indicated by a dash-dotted line and falls from the coupling claw (6a).
LeerseiteBlank page
Claims (1)
b) Die Auflageflächen (4) des Greifkopfes (3) auf den Kupplungsklauen (6) sind gegen die Horizontale geneigt.attached.
b) The bearing surfaces (4) of the gripping head (3) on the coupling claws (6) are inclined to the horizontal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813119266 DE3119266A1 (en) | 1981-05-14 | 1981-05-14 | Absorber rod having an articulated grabhead |
| FR8208385A FR2506061B1 (en) | 1981-05-14 | 1982-05-13 | ABSORPTION BAR WITH ARTICULATED HANGING HEAD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813119266 DE3119266A1 (en) | 1981-05-14 | 1981-05-14 | Absorber rod having an articulated grabhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3119266A1 true DE3119266A1 (en) | 1982-12-02 |
Family
ID=6132345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813119266 Withdrawn DE3119266A1 (en) | 1981-05-14 | 1981-05-14 | Absorber rod having an articulated grabhead |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3119266A1 (en) |
| FR (1) | FR2506061B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3467653D1 (en) * | 1983-06-21 | 1987-12-23 | Acec | Dismountable fixing arrangement for a throttle closure |
| FR2586500B1 (en) * | 1985-08-22 | 1987-10-30 | Commissariat Energie Atomique | ABSORBENT ELEMENT FOR FAST NEUTRAL NUCLEAR REACTOR |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE624947A (en) * | 1961-11-16 | |||
| FR1450728A (en) * | 1965-07-12 | 1966-06-24 | Creusot Forges Ateliers | Control rod control device |
| FR1528762A (en) * | 1967-04-25 | 1968-06-14 | Commissariat Energie Atomique | Fuel element handling facility |
| BE737691A (en) * | 1969-08-20 | 1970-02-20 | Acec | DRIVING MECHANISM OF A CONTROL OR SAFETY BAR |
-
1981
- 1981-05-14 DE DE19813119266 patent/DE3119266A1/en not_active Withdrawn
-
1982
- 1982-05-13 FR FR8208385A patent/FR2506061B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2506061B1 (en) | 1985-11-22 |
| FR2506061A1 (en) | 1982-11-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: INTERATOM GMBH, 5060 BERGISCH GLADBACH, DE |
|
| 8141 | Disposal/no request for examination |