GB939973A - Drive means for regulating and emergency control rods in heterogeneous nuclear reactors - Google Patents
Drive means for regulating and emergency control rods in heterogeneous nuclear reactorsInfo
- Publication number
- GB939973A GB939973A GB30181/61A GB3018161A GB939973A GB 939973 A GB939973 A GB 939973A GB 30181/61 A GB30181/61 A GB 30181/61A GB 3018161 A GB3018161 A GB 3018161A GB 939973 A GB939973 A GB 939973A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- nut
- control
- levers
- balls
- 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
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
-
- 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)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
939,973. Controlling nuclear reactors. ALLMANNA SVENSKA ELEKTRISKA A.B. Aug. 22, 1961 [Aug. 24, 1960], No. 30181/61. Class 39(4). Drive means for the control rod of a heterogeneous nuclear reactor comprises a motordriven screw-and-nut mechanism, means for holding the rod connected with the nut for its function as a regulating control-rod and for releasing the rod from the nut when the former is in its uppermost position, and electromagnetic means which hold the rod in this position in readiness for its function as an emergency control-rod. In the embodiment shown in Figs. 1 and 1a, the control-rod 1 in the form of a tube is supported by the nut 5 which has an inwardly projecting shoulder 24 resting upon balls 21 pressed outwards by levers 22 mounting pivots 23 which carry a ring 18 in recesses of which the balls 21 are mounted. A spring 19 is mounted between the levers 22 and a flange 17 on a supporting tube 16 which extends from the lower end of the nut 5, the supporting tube 16 thus carrying the ring 18. The nut 5 is threaded on a screw 4 driven by a motor 3 and is prevented from rotating with the screw 4 by splines 12 which extend through slots 13 in an upper magnetic part 14 of the control rod 1 into slots 15 (Fig. 3, not shown), in the inner wall of a surrounding tube 2. When the nut 5 is raised, it carries the control rod 1 to its uppermost position when the part 14 is opposite an electromagnet 8 which holds the rod 1 in position. Since the motor 3 is still rotating, the spring 19 is compressed and the levers 22 swing inwards to allow the balls 21 to move away from the shoulder 24. The rod 1 then acts as an emergency control-rod, interruption of the current to the electromagnet 8 releasing the rod which falls under gravity into the reactor. In an alternative embodiment (Fig. 5), the means for holding the rod 1 connected with the nut 5 comprises pawls 31 pivoted on a bearing member fixed to the supporting tube 16 and engaging recesses 26 in the nut 5. A sleeve 33 ensures that the pawls 31 are turned outwards when the rod 1 reaches its uppermost position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE806760 | 1960-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB939973A true GB939973A (en) | 1963-10-16 |
Family
ID=20273056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30181/61A Expired GB939973A (en) | 1960-08-24 | 1961-08-22 | Drive means for regulating and emergency control rods in heterogeneous nuclear reactors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB939973A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243466A (en) * | 1964-01-08 | 1966-03-29 | Ici Ltd | Dinitrotoluene process |
| FR2371045A1 (en) * | 1976-11-10 | 1978-06-09 | Babcock & Wilcox Co | CONTROL BAR SYSTEM FOR NUCLEAR REACTOR WITH FUEL ELEMENT EQUIPPED WITH A SHAFT REMOVABLE COUPLED TO A BAR |
| CN105788668A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Split nut driven control rod drive mechanism |
| CN114420327A (en) * | 2022-01-28 | 2022-04-29 | 上海核工程研究设计院有限公司 | Rod position measuring device and method of motor-driven control rod driving mechanism |
-
1961
- 1961-08-22 GB GB30181/61A patent/GB939973A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243466A (en) * | 1964-01-08 | 1966-03-29 | Ici Ltd | Dinitrotoluene process |
| FR2371045A1 (en) * | 1976-11-10 | 1978-06-09 | Babcock & Wilcox Co | CONTROL BAR SYSTEM FOR NUCLEAR REACTOR WITH FUEL ELEMENT EQUIPPED WITH A SHAFT REMOVABLE COUPLED TO A BAR |
| CN105788668A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Split nut driven control rod drive mechanism |
| CN114420327A (en) * | 2022-01-28 | 2022-04-29 | 上海核工程研究设计院有限公司 | Rod position measuring device and method of motor-driven control rod driving mechanism |
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