GB1070204A - Method for tightly closing tubes made of ceramic-metal composite materials, for example sheaths for the fuel elements of nuclear reactors - Google Patents
Method for tightly closing tubes made of ceramic-metal composite materials, for example sheaths for the fuel elements of nuclear reactorsInfo
- Publication number
- GB1070204A GB1070204A GB31767/64A GB3176764A GB1070204A GB 1070204 A GB1070204 A GB 1070204A GB 31767/64 A GB31767/64 A GB 31767/64A GB 3176764 A GB3176764 A GB 3176764A GB 1070204 A GB1070204 A GB 1070204A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- ring
- cavity
- flange
- metal
- 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
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/06—Casings; Jackets
- G21C3/10—End closures ; Means for tight mounting therefor
-
- 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)
- Arc Welding In General (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Ceramic Products (AREA)
Abstract
1,070,204. Welding by fusion; brazing; stamping. EUROPEAN ATOMIC ENERGY COMMUNITY (Euratom). Aug. 5 1964 [Aug. 6, 1963], No. 31767/64. Headings B3Q and B3R. [Also in Division G6] A method of closing the ends of tubular elements made of ceramic metal composite materials comprises the steps of closing the end of the tubular element with a plug having a projecting flange which co-operates with the element to form an annular cavity around the mouth of the element, securing the plug in the element, inserting in the cavity a ring of the same metal as the matrix of the composite material, said ring having a size to project from the cavity and heating the ring so that it melts and the metal diffuses into the element and the flange of the plug. A tube 13 made of sintered aluminium containing a high percentage of alumina and forming the sheath of a nuclear fuel element is internally threaded at 19 and has a counterbore 20. The plug 15 of the same material has external threads 18 and a flange 17, which is reduced in diameter at 21 to form, with the element an annular cavity which receives an aluminium ring 22. The thickness of the metal of the sheath and plug on each side of the ring is the same and is equal to the projection of the ring above the cavity. Preferably the thickness (i.e. the axial length) of the plug 15 is ten times the wall thickness of the tubular element, and twice the axial length of the ring 22. The plug is secured in the element by swaging and is then rotated at 2 r.p.m. and bombarded by an electron gun 23 which causes fusion of the ring to produce the joint shown in Fig. 7. Argon or helium shielded arc-welding using a tungsten electrode may be used in which case the ends of the tube and the plug flange are chamfered at 45 degrees to contain the molten metal of the ring. In a modification, the threads 18 and 19 are omitted and the plug is formed with a cannelure (27), Fig. 10 (not shown), into which the tubular element is electromagnetically swaged. In a second modification, Fig. 11 (not shown), the counterbore 20 is omitted from the element and the full radial depth of the cavity is formed by machining the plug. In a third modification, Fig. 12 (not shown), the method is applied to special sheathing tubes having a solid plug (30) through which thermocouples extend. The ring (32) has an angular crosssection and is received in a cavity comprising a counterbore (34) in the sheath and a V- groove formed by chamfered flange (31) on the plug and the chamfered end of the tube. In a further modification the plug is coated with silver and heated to obtain a mechanical connection by diffusion.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE509480 | 1963-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1070204A true GB1070204A (en) | 1967-06-01 |
Family
ID=3844820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31767/64A Expired GB1070204A (en) | 1963-08-06 | 1964-08-05 | Method for tightly closing tubes made of ceramic-metal composite materials, for example sheaths for the fuel elements of nuclear reactors |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE635876A (en) |
CA (1) | CA741416A (en) |
DE (1) | DE1450318A1 (en) |
ES (1) | ES301784A1 (en) |
FR (1) | FR1511556A (en) |
GB (1) | GB1070204A (en) |
LU (1) | LU46546A1 (en) |
NL (1) | NL6408918A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9224509B2 (en) | 2012-01-26 | 2015-12-29 | Areva Gmbh | Container, device and method for encapsulating a fuel rod or a fuel rod portion in a gas-tight manner |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3719028A1 (en) * | 1987-06-06 | 1988-12-22 | Asea Brown Boveri | Container seal for cooling boiling liquids |
DE19724420C2 (en) * | 1997-06-10 | 2003-06-12 | Bosch Gmbh Robert | Pressure-tight assembly |
-
0
- CA CA741416A patent/CA741416A/en not_active Expired
- BE BE635876D patent/BE635876A/xx unknown
-
1964
- 1964-06-30 FR FR980108A patent/FR1511556A/en not_active Expired
- 1964-07-07 ES ES0301784A patent/ES301784A1/en not_active Expired
- 1964-07-15 DE DE19641450318 patent/DE1450318A1/en active Pending
- 1964-07-16 LU LU46546D patent/LU46546A1/xx unknown
- 1964-08-04 NL NL6408918A patent/NL6408918A/xx unknown
- 1964-08-05 GB GB31767/64A patent/GB1070204A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9224509B2 (en) | 2012-01-26 | 2015-12-29 | Areva Gmbh | Container, device and method for encapsulating a fuel rod or a fuel rod portion in a gas-tight manner |
Also Published As
Publication number | Publication date |
---|---|
NL6408918A (en) | 1965-02-08 |
ES301784A1 (en) | 1966-04-16 |
CA741416A (en) | 1966-08-23 |
BE635876A (en) | |
LU46546A1 (en) | 1964-09-16 |
DE1450318A1 (en) | 1969-01-16 |
FR1511556A (en) | 1968-02-02 |
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