JPH0161697U

JPH0161697U -

Info

Publication number: JPH0161697U
Application number: JP1987158124U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-19

Description

[Brief explanation of the drawing]

第１図は本考案による核燃料棒支持格子の第１
の実施例を示す縦断面部分図、第２図は本考案の
第２の実施例を示す第１図と同様な縦断面部分図
、第３図は第２図の支持格子により燃料棒を支持
しているところを概略的に示す縦断面部分図、第
４図および第５図は、それぞれ、本考案の第３、
第４の実施例を示す第１図と同様な縦断面部分図
、第６図は第５図のＡ―Ａ線に沿つての断面図、
第７図は第５図のＢ―Ｂ線に沿つての断面図、第
８図は燃料集合体を示す概略説明図、第９図は第
８図のＣ―Ｃ線に沿つての断面図、第１０図は従
来の支持格子を示す第１図と同様な縦断面部分図
である。図中、１……燃料集合体、２……燃料棒、３，１０，
１０′，１０″，１０……支持格子（核燃料棒
支持格子）、４……帯板、４′……帯板部分、５
……スプリング、６……デインプル、７，７′，
７″，８……スロツト、９……面取り部分。 Figure 1 shows the first diagram of the nuclear fuel rod support grid according to the present invention.
FIG. 2 is a partial vertical cross-sectional view similar to FIG. 1 showing a second embodiment of the present invention; FIG. 3 is a partial vertical cross-sectional view showing a second embodiment of the present invention; FIG. 4 and 5 are vertical sectional partial views schematically illustrating the third and third aspects of the present invention, respectively.
A vertical cross-sectional partial view similar to FIG. 1 showing the fourth embodiment; FIG. 6 is a cross-sectional view taken along line A-A in FIG. 5;
Fig. 7 is a cross-sectional view taken along the line B-B in Fig. 5, Fig. 8 is a schematic explanatory diagram showing the fuel assembly, and Fig. 9 is a cross-sectional view taken along the line C-C in Fig. 8. , FIG. 10 is a partial vertical cross-sectional view similar to FIG. 1 showing a conventional support grid. In the figure, 1... Fuel assembly, 2... Fuel rod, 3, 10,
10', 10'', 10...Support grid (nuclear fuel rod support grid), 4...Strip plate, 4'...Strip plate portion, 5
...Spring, 6...Dimple, 7,7',
7″, 8…slot, 9…chamfered part.

Claims

[Scope of utility model registration request]

In a nuclear fuel rod support grid in which a plurality of strip plates are assembled orthogonally to each other to define a plurality of openings with a rectangular cross section through which the fuel rods pass, a strip portion of the strip plates defining the openings is provided with a 1. A nuclear fuel rod support grid comprising a pair of rigid protrusions, an elastic protrusion disposed between the rigid protrusions and protruding to the other side, and a wide slot adjacent to the rigid protrusions.