GB1221690A - Improvements relating to suspension means for the control rods of nuclear reactors - Google Patents
Improvements relating to suspension means for the control rods of nuclear reactorsInfo
- Publication number
- GB1221690A GB1221690A GB50013/68A GB5001368A GB1221690A GB 1221690 A GB1221690 A GB 1221690A GB 50013/68 A GB50013/68 A GB 50013/68A GB 5001368 A GB5001368 A GB 5001368A GB 1221690 A GB1221690 A GB 1221690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control rod
- chain
- sprocket
- locker
- plunger
- 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
Links
- 239000000725 suspension Substances 0.000 title abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
Classifications
-
- 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
- G21C7/14—Mechanical drive arrangements
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
1,221,690. Controlling reactors. A. REYROLLE & CO. Ltd. 22 Jan., 1970 [22 Oct., 1968], No. 50013/68. Heading G6C. A control rod suspension arrangement comprises an open-link chain 16 attached at its lower end 20 to a control rod 19, and passing up and around a motor-driven driving sprocket 14 and thence hanging down into a chain locker 10 on the floor of which the excess length of chain 16 is deposited. The extreme end 22 of the portion of the chain 16 in the locker 10 is attached to a spring buffer 21 comprising a plunger slidably mounted in guides in a surrounding cylinder and having a powerful compression spring acting downwardly on a head attached to the lower end of the plunger. The spring, which may be pre-compressed, surrounds the plunger in the cylinder and its upper end bears against an abutment shoulder in the top of the cylinder. The surplus chain 16 piles up on the floor of the locker 10 as the control rod is raised and is picked up cleanly from it as the control rod is lowered. Should a rapid emergency insertion of the control rod be required, a clutch (not shown) is released in the motor drive to the sprocket 14 to allow the latter to rotate freely so that the control rod will descend under gravity, pulling the chain 16 over the sprocket 14, until the control rod reaches its fully inserted position, at which stage the part of the chain approaching the sprocket 14 becomes taut and the buffer 21 cushions the shock to the control rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB50013/68A GB1221690A (en) | 1968-10-22 | 1968-10-22 | Improvements relating to suspension means for the control rods of nuclear reactors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB50013/68A GB1221690A (en) | 1968-10-22 | 1968-10-22 | Improvements relating to suspension means for the control rods of nuclear reactors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1221690A true GB1221690A (en) | 1971-02-03 |
Family
ID=10454326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50013/68A Expired GB1221690A (en) | 1968-10-22 | 1968-10-22 | Improvements relating to suspension means for the control rods of nuclear reactors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1221690A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2232819A2 (en) * | 1972-06-29 | 1975-01-03 | Activite Atom Avance | |
US4219384A (en) * | 1976-11-06 | 1980-08-26 | Hochtemperatur-Reaktorbau Gmbh | Driving apparatus for an absorber rod |
-
1968
- 1968-10-22 GB GB50013/68A patent/GB1221690A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2232819A2 (en) * | 1972-06-29 | 1975-01-03 | Activite Atom Avance | |
US4219384A (en) * | 1976-11-06 | 1980-08-26 | Hochtemperatur-Reaktorbau Gmbh | Driving apparatus for an absorber rod |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1221690A (en) | Improvements relating to suspension means for the control rods of nuclear reactors | |
ES485035A1 (en) | Safety device for hydraulic lifting apparatus | |
US3508673A (en) | Refuse body with retaining fingers | |
US5176226A (en) | Tailgate closing mechanism for tailgate hoist | |
CN209719575U (en) | Overhead man-riding chair lift abat-vent | |
CN111820181A (en) | Vehicle-mounted aquatic product transportation and carrying equipment | |
JPS55117547A (en) | Lifting device of segment in continuous casting equipment | |
GB1104540A (en) | Locking structure for tilt cab | |
DK0424708T3 (en) | Automatic floor seal for a door | |
GB1290402A (en) | ||
GB2003116A (en) | Safety device | |
SU140041A1 (en) | Peat press | |
SU132084A1 (en) | Mechanism for tipping the body of an autotractor trailer | |
JP3533560B2 (en) | Compression volume reduction device | |
JPS603008U (en) | Integral foam molding equipment | |
GB1312120A (en) | Vibratory device for taking ocean floor sediment cores | |
JPS57174521A (en) | Sand pile former | |
GB1039041A (en) | Improved safety device for a lift or hoist | |
CN111386856A (en) | Centralized harvesting device for black-skinned wax gourds | |
GB1340868A (en) | Dockboard | |
GB1131564A (en) | Platform lift | |
GB1040970A (en) | Improvements in lifts | |
CN114275696A (en) | Pig farm winch formula hoisting device | |
FR2609697A1 (en) | Skip with horizontal spout | |
JPS55116916A (en) | Method for preparation of sand pile |