GB1365519A – Nuclear reactor control rod assembly
– Google Patents
GB1365519A – Nuclear reactor control rod assembly
– Google Patents
Nuclear reactor control rod assembly
Info
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
1970-11-30
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
Application number
GB5539671A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
1970-11-30
Filing date
1971-11-29
Publication date
1974-09-04
1971-11-29
Application filed by Siemens AG
filed
Critical
Siemens AG
1974-09-04
Publication of GB1365519A
publication
Critical
patent/GB1365519A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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.
GB5539671A
1970-11-30
1971-11-29
Nuclear reactor control rod assembly
Expired
GB1365519A
(en)
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)
* Cited by examiner, † Cited by third party
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
IT943686B
(en)
1973-04-10
FR2115465A1
(en)
1972-07-07
DE2058758A1
(en)
1972-05-31
SE368634B
(en)
1974-07-08
BE775810A
(en)
1972-05-25
FR2115465B1
(en)
1975-06-13
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Legal Events
Date
Code
Title
Description
1975-01-15
PS
Patent sealed
1977-06-22
PLNP
Patent lapsed through nonpayment of renewal fees
