GB1365519A - Nuclear reactor control rod assembly - Google Patents
Nuclear reactor control rod assemblyInfo
- Publication number
- GB1365519A GB1365519A GB5539671A GB5539671A GB1365519A GB 1365519 A GB1365519 A GB 1365519A GB 5539671 A GB5539671 A GB 5539671A GB 5539671 A GB5539671 A GB 5539671A GB 1365519 A GB1365519 A GB 1365519A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control rod
- rod
- drive tube
- screw thread
- stub
- 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
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 239000011358 absorbing material Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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)
- 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
1365519 Controlling reactors SIEMENS AG 29 Nov 1971 [30 Nov 1970] 55396/71 Heading G6C A control rod assembly comprises a tubular control rod formed with a coaxial internal screw thread and rotary driving means for engagement with the screw thread for bringing about longitudinal movement of the rod. As shown in Fig. 1, a tubular control rod 1 comprises a support tube covered with a layer 2 of neutron-absorbing material and formed with an internal screw thread 3. A cylindrical drive tube 6 is rotatably supported within a stub 4 on the reactor cover (not shown), and arranged coaxially around the stub 4 is the stator 8 of an electric motor, the rotor 9 of which extends within the stub 4 coaxially with the control rod 1 and is secured to the drive tube 6 through a flange 10. The rotor 9 is supported by antifriction bearings 11 against the upper end of a guide tube 5 extending down from the stub 4. The drive tube 6 is coupled to the control rod 1 through rollers 12, each formed with an external screw thread 13 engaging the internal screw thread 3 of the control rod 1. This engagement is effected by means of a coupling rod 21 guided within the drive tube 6 and drawn upwardly by the action of an electromagnet 25 on a disc 22 at the upper end of the rod 21 so that cams 28, 29 on the rod 21 act on transverse pins 30, 31 to press cylindrical segments 15, 16 bearing the rollers 12 on bolts 14 radially outwards against springs 18, 19 so that the rollers 12 engage with the screwthread 3. Depending on the direction of rotation of the drive tube 6, the control rod 1 is then raised or lowered. The control rod 1 is prevented from rotating by means of a roller (not shown) mounted on the rod and engaging a longitudinal groove 32 in the inner side of the guide tube 5. In order, in the event of withdrawl of the rollers 12 and the consequent rapid dropping-in of the control rod 1, to brake the control rod towards the end of its fall, the external diameter of the drive tube 6 increases downwardly at its lower portion 34. By this means a flow gap 35 between the upper end of the control rod 1 and the drive tube 6 for water flowing out of the control rod diminishes progressively, resulting in a shock absorber effect.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702058758 DE2058758A1 (en) | 1970-11-30 | 1970-11-30 | Drive device for tubular control rods in nuclear reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1365519A true GB1365519A (en) | 1974-09-04 |
Family
ID=5789454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5539671A Expired GB1365519A (en) | 1970-11-30 | 1971-11-29 | Nuclear reactor control rod assembly |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE775810A (en) |
| DE (1) | DE2058758A1 (en) |
| FR (1) | FR2115465B1 (en) |
| GB (1) | GB1365519A (en) |
| IT (1) | IT943686B (en) |
| SE (1) | SE368634B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241201B (en) * | 2021-04-29 | 2022-03-04 | 西南科技大学 | Non-uniform control rod with non-uniform reflecting layer |
-
1970
- 1970-11-30 DE DE19702058758 patent/DE2058758A1/en active Pending
-
1971
- 1971-11-25 BE BE775810A patent/BE775810A/en unknown
- 1971-11-25 SE SE15107/71A patent/SE368634B/xx unknown
- 1971-11-26 IT IT31680/71A patent/IT943686B/en active
- 1971-11-29 FR FR7142610A patent/FR2115465B1/fr not_active Expired
- 1971-11-29 GB GB5539671A patent/GB1365519A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE775810A (en) | 1972-05-25 |
| FR2115465B1 (en) | 1975-06-13 |
| DE2058758A1 (en) | 1972-05-31 |
| IT943686B (en) | 1973-04-10 |
| SE368634B (en) | 1974-07-08 |
| FR2115465A1 (en) | 1972-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |