JPH0455531U

JPH0455531U -

Info

Publication number: JPH0455531U
Application number: JP9834990U
Authority: JP
Priority date: 1990-09-19
Filing date: 1990-09-19
Publication date: 1992-05-13
Anticipated expiration: 2005-09-19
Also published as: JP2560957Y2

Description

[Brief explanation of the drawing]

第１図Ａは本考案の第１実施例を示す断面図、
第１図Ｂは第１図Ａの要部拡大図、第２図は本考
案のスタツドボルトの第２実施例の断面図を示し
、第３図は第２図のＡ部拡大図、第４図は第２図
のＢ部拡大図、第５図は第４図のＡ−Ａ線断面図
、第６図Ａは第１図のスタツドボルトにおける熱
電対を取り外してキヤツプを設置した状態を示す
説明図、第６図Ｂは第６図ＡのＡ部拡大図、第７
図は本考案のスタツドボルトの第３実施例を示し
、第７図Ａはその断面図、第７図Ｂは第７図Ａの
Ｂ部拡大図、第７図Ｃは第７図ＢのＡ−Ａ線断面
図、第８図及び第９図は本考案のスタツドボルト
の第４実施例を示し、第８図は伸び測定時の状態
を示す断面図、第９図は熱電対による温度測定時
の状態を示す断面図、第１０図は原子炉圧力容器
の概略的構成図、第１１図は従来の伸び計測棒に
よるスタツドボルトの伸び測定状態を示す説明図
、第１２図は第１１図のＡ部拡大図、第１３図及
び第１４図はスタツドボルトの伸び測定の原理を
示す説明図、第１５図は圧力容器運転中における
熱電対による従来のスタツドボルトの温度測定状
態を示す説明図、第１６図は温度が計測されない
従来のスタツドボルトの状態を示す説明図である
。１……胴体、１Ａ……胴体フランジ、２……上
鏡、２Ａ……上鏡フランジ、３……スタツドボル
ト、３Ａ……スタツドボルト植込部、３Ｂ……螺
合部、４……ワツシヤ、５……ナツト、６……プ
ラグ、７……ガイド、８……ダイヤルゲージ、９
……キヤツプ、１０……スタツドボルト開口、１
１……熱電対、１２，１３，１４……伸び計測棒
、１３Ａ……螺子部、１３Ｂ……切欠部、１５…
…熱電対挿入用開口。 FIG. 1A is a sectional view showing the first embodiment of the present invention;
FIG. 1B is an enlarged view of the main part of FIG. 1A, FIG. 2 is a sectional view of the second embodiment of the stud bolt of the present invention, and FIG. The figure is an enlarged view of part B in Figure 2, Figure 5 is a sectional view taken along the line A-A in Figure 4, and Figure 6 A shows the stud bolt in Figure 1 with the thermocouple removed and the cap installed. Explanatory drawing, Fig. 6B is an enlarged view of part A of Fig. 6A, Fig. 7
The figures show a third embodiment of the stud bolt of the present invention, FIG. 7A is a sectional view thereof, FIG. 7B is an enlarged view of section B in FIG. 7A, and FIG. 7C is an enlarged view of section A in FIG. 7B. - A cross-sectional view, Figures 8 and 9 show the fourth embodiment of the stud bolt of the present invention, Figure 8 is a cross-sectional view showing the state during elongation measurement, and Figure 9 is temperature measurement using a thermocouple. 10 is a schematic configuration diagram of the reactor pressure vessel, FIG. 11 is an explanatory diagram showing the state of elongation measurement of stud bolts using a conventional elongation measuring rod, and FIG. 12 is Fig. 11. Figures 13 and 14 are explanatory diagrams showing the principle of elongation measurement of stud bolts, and Figure 15 is an explanatory diagram showing the state of conventional temperature measurement of stud bolts using thermocouples during pressure vessel operation. , FIG. 16 is an explanatory diagram showing the state of a conventional stud bolt in which temperature is not measured. 1...Body, 1A...Body flange, 2...Upper mirror, 2A...Upper mirror flange, 3...Stud bolt, 3A...Stud bolt implantation part, 3B...Threaded part, 4...Washer , 5... Nut, 6... Plug, 7... Guide, 8... Dial gauge, 9
... Cap, 10 ... Stud bolt opening, 1
1... Thermocouple, 12, 13, 14... Extension measuring rod, 13A... Threaded portion, 13B... Notch, 15...
...Opening for thermocouple insertion.

Claims

[Claims for Utility Model Registration] (1) In a stud bolt used for opening and closing a pressure vessel, a hollow portion is formed in the stud bolt along its axial direction, and the stud bolt is used for measuring the axial elongation of the stud bolt. A stud bolt characterized in that an elongation measuring rod is inserted into the hollow portion and fixed only at one end in the axial direction. (2) The stud bolt according to claim (1), wherein the elongation measuring rod has a cutout portion into which a temperature measuring member for measuring the temperature of the stud bolt can be inserted.