GB1431497A - Lattice for support a bunch of bar-shaped members - Google Patents
Lattice for support a bunch of bar-shaped membersInfo
- Publication number
- GB1431497A GB1431497A GB2787973A GB2787973A GB1431497A GB 1431497 A GB1431497 A GB 1431497A GB 2787973 A GB2787973 A GB 2787973A GB 2787973 A GB2787973 A GB 2787973A GB 1431497 A GB1431497 A GB 1431497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall
- straps
- partitions
- cap
- welded
- 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
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/34—Spacer grids
- G21C3/348—Spacer grids formed of assembled non-intersecting strips
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B81/00—Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
- A47B81/007—Racks for cylindrical or barrel-like objects, e.g. casks, rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
- F28F9/0135—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Connection Of Plates (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
1431497 Welding by pressure; making supports for elongate members STICHTING REACTOR CENTRUM NEDERLAND 12 June 1973 [12 June 1972] 27879/73 Headings B3A and B3R [Also in Divisions D1-D2 F3- F4 and G4-G6] A spacer grid for supporting a group of elongated heat exchange members such as a nuclear fuel assembly comprises a plurality of parallel straps 20 interconnected at regular intervals by partitions 11 positioned perpendicular to the straps 20 and furnished with pairs of lip portions 12, 13 which pass through apertures (21, 22, Fig. 4, not shown) in the straps 20. The partitions 11 are also furnished with pairs of tab portions 14, 15 bent to extend perpendicular to the lip portions 12, 13. The lip portions 12, 13 are spot-welded to the opposing ends of adjacent partitions 11, as at 28, and the tab portions 14, 15 are spotwelded to adjacent straps 20, as at 29. As is clear from Fig. 3, the tongues 12, 13 are displaced parallel to the body of the partition 11 by a distance equal to the thickness of the partition. Partitions 23 having only bent tab portions are provided between the two uppermost straps 20, 27 (strap 27 not being apertured) and also in place of the lowermost strap 20 (as shown in Fig. 8). The fuel rods of the nuclear fuel assembly are supported within the grid cells between springs and fixed supports, which latter are either spot-welded to, or punched and bent out of, the cell walls (Figs. 9, 11, not shown). Where in the assembly of the lattice a spotweld is required between two walls 46, 47 (Fig. 17) of materials which are not easily welded together, use is made of a welding cap 45 the recessed portion 48 of which extends through an aperture 51 in the wall 46 of a material that is hard to weld. The material of the cap 45 is of such a nature as to be highly weldable to the wall 47. Application of electrodes 49, 50 produces a welded joint between the portion 48 of cap 45 and the wall 47, so that the projecting edge or flange 52 of cap 45 presses the wall 48 against the wall 47. The flange 52 is accommodated in a recess in the face of the wall 46.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7207937A NL7207937A (en) | 1972-06-12 | 1972-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1431497A true GB1431497A (en) | 1976-04-07 |
Family
ID=19816251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2787973A Expired GB1431497A (en) | 1972-06-12 | 1973-06-12 | Lattice for support a bunch of bar-shaped members |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3924380A (en) |
| JP (1) | JPS5624240B2 (en) |
| BE (1) | BE800598A (en) |
| CH (1) | CH572265A5 (en) |
| DE (1) | DE2329471A1 (en) |
| FR (1) | FR2200946A5 (en) |
| GB (1) | GB1431497A (en) |
| IT (1) | IT986135B (en) |
| NL (1) | NL7207937A (en) |
| SE (1) | SE414341B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831780A (en) * | 1981-08-20 | 1983-02-24 | Mitsubishi Electric Corp | Heat-sensitive recorder for font character output |
| DE58908369D1 (en) * | 1989-12-22 | 1994-10-20 | Siemens Ag | Nuclear reactor fuel assembly with spacers and process for their manufacture. |
| US6708960B2 (en) * | 2001-07-10 | 2004-03-23 | Integrid Inc. | Cooling tower support grid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1749902A (en) * | 1929-04-04 | 1930-03-11 | Kerlow Steel Floor Company | Floor grating |
| US3156957A (en) * | 1961-12-01 | 1964-11-17 | Life Man Inc | Floor mat and method of making the same |
| JPS4428879Y1 (en) * | 1966-03-29 | 1969-11-29 |
-
1972
- 1972-06-12 NL NL7207937A patent/NL7207937A/xx not_active Application Discontinuation
-
1973
- 1973-06-06 US US367408A patent/US3924380A/en not_active Expired - Lifetime
- 1973-06-07 IT IT50547/73A patent/IT986135B/en active
- 1973-06-07 BE BE131997A patent/BE800598A/en unknown
- 1973-06-07 CH CH831073A patent/CH572265A5/xx not_active IP Right Cessation
- 1973-06-08 DE DE2329471A patent/DE2329471A1/en not_active Ceased
- 1973-06-11 JP JP6489073A patent/JPS5624240B2/ja not_active Expired
- 1973-06-12 SE SE7308264A patent/SE414341B/en unknown
- 1973-06-12 FR FR7321244A patent/FR2200946A5/fr not_active Expired
- 1973-06-12 GB GB2787973A patent/GB1431497A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE414341B (en) | 1980-07-21 |
| JPS5624240B2 (en) | 1981-06-04 |
| DE2329471A1 (en) | 1973-12-20 |
| NL7207937A (en) | 1973-12-14 |
| BE800598A (en) | 1973-12-07 |
| FR2200946A5 (en) | 1974-04-19 |
| US3924380A (en) | 1975-12-09 |
| IT986135B (en) | 1975-01-20 |
| JPS4962891A (en) | 1974-06-18 |
| CH572265A5 (en) | 1976-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |