ES330210A1 - Grabs for handling nuclear fuel elements - Google Patents
Grabs for handling nuclear fuel elementsInfo
- Publication number
- ES330210A1 ES330210A1 ES330210A ES330210A ES330210A1 ES 330210 A1 ES330210 A1 ES 330210A1 ES 330210 A ES330210 A ES 330210A ES 330210 A ES330210 A ES 330210A ES 330210 A1 ES330210 A1 ES 330210A1
- Authority
- ES
- Spain
- Prior art keywords
- motor
- balls
- arms
- grab
- screw
- 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
- 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
-
- 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
- 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
- G21C19/115—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with latching devices and ball couplings
-
- 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)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Transmission Devices (AREA)
Abstract
To remove a nuclear fuel element 80, Fig. 4, from a hollow nozzle 81 where it is held by balls 83 which are pushed outwards by a spring-loaded sleeve 84 a grab 1 is lowered into the hollow head of the element and latched thereto by balls 34. The balls 34 are urged outwards by a slide - block 29 which is moved up the grab by a screw 18 turned in a fixed nut 19 by an electric motor 9 and a sleeve 12. When a rod 35, which moves with the slide block 29, closes contacts 36 the motor 9 stops. After a time delay a second motor 66 is energized and pushes arms 69, 70, Fig. 4, out of slits 79, 80, Fig. 1, by rotating a differential housing 50. The housing 50 is prevented from further rotation by the arms 69, 70 when the latter are fully extended. Continued rotation of the motor 66 causes rotation of a screw 42 in a nut 43, through the differential gearing, which raises the differential housing 50 and the arms 69, 70. The latter slide up slots 79, 80 until the end of a pile of spring washers 40 abuts the lower end of rod 25. The motor 66 is now stopped by a contactor, or, if this fails, by the excess current taken by the motor. As the arms 69, 70, Fig. 4, are raised by the screw they push the sleeve 84 upwards to a position in which the balls 83 are received in grooves 90. This releases the element 80 from the nozzle 81 and since it is attached to the grab by balls 34 it may be lowered and removed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR28324A FR1457462A (en) | 1965-08-13 | 1965-08-13 | Ball grapple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES330210A1 true ES330210A1 (en) | 1968-03-16 |
Family
ID=8586635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES330210A Expired ES330210A1 (en) | 1965-08-13 | 1966-08-12 | Grabs for handling nuclear fuel elements |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE685051A (en) |
| CH (1) | CH460964A (en) |
| DE (1) | DE1539798A1 (en) |
| ES (1) | ES330210A1 (en) |
| FR (1) | FR1457462A (en) |
| GB (1) | GB1088969A (en) |
| LU (1) | LU51715A1 (en) |
| NL (1) | NL6611242A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116095A (en) * | 1991-01-16 | 1992-05-26 | Baroid Technology, Inc. | Apparatus for lifting heavy equipment |
| DE102011003462B3 (en) * | 2011-02-01 | 2012-05-16 | Areva Np Gmbh | Device for pulling fuel element from core of pressurized water nuclear reactor provided in position below fuel element-exchanging machine in power plant, has gripping tool vertically adjustably mounted at lower beam at distance from axis |
| US11289222B2 (en) | 2018-03-16 | 2022-03-29 | Framatome Inc. | Method and device for unlatching control rod drive shafts in pressurized water reactors |
| CN110556187B (en) * | 2019-09-18 | 2020-10-27 | 中国核动力研究设计院 | Automatic grabbing and lifting device in reactor |
-
1965
- 1965-08-13 FR FR28324A patent/FR1457462A/en not_active Expired
-
1966
- 1966-08-03 CH CH1118266A patent/CH460964A/en unknown
- 1966-08-03 BE BE685051D patent/BE685051A/xx unknown
- 1966-08-05 LU LU51715A patent/LU51715A1/xx unknown
- 1966-08-05 GB GB35265/66A patent/GB1088969A/en not_active Expired
- 1966-08-10 NL NL6611242A patent/NL6611242A/xx unknown
- 1966-08-11 DE DE19661539798 patent/DE1539798A1/en active Pending
- 1966-08-12 ES ES330210A patent/ES330210A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1539798A1 (en) | 1970-01-08 |
| BE685051A (en) | 1967-01-16 |
| CH460964A (en) | 1968-08-15 |
| NL6611242A (en) | 1967-02-14 |
| FR1457462A (en) | 1966-01-24 |
| LU51715A1 (en) | 1966-10-05 |
| GB1088969A (en) | 1967-10-25 |
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