JPS5824783Y2 - Flaw detector for pipe inspection - Google Patents
Flaw detector for pipe inspectionInfo
- Publication number
- JPS5824783Y2 JPS5824783Y2 JP1977097142U JP9714277U JPS5824783Y2 JP S5824783 Y2 JPS5824783 Y2 JP S5824783Y2 JP 1977097142 U JP1977097142 U JP 1977097142U JP 9714277 U JP9714277 U JP 9714277U JP S5824783 Y2 JPS5824783 Y2 JP S5824783Y2
- Authority
- JP
- Japan
- Prior art keywords
- main body
- pressure
- tube
- slide plate
- flaw detector
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【考案の詳細な説明】
本考案は原子力蒸気発生器の細管検査に用いられている
電気抵抗法による検査装置の探傷子の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a flaw detector of an inspection device using an electrical resistance method used for inspection of capillary tubes in nuclear steam generators.
従来の探傷子を第１図に示すと、０１，０２は探傷子本
体、０３は圧縮ばね、０４は接触子、０５は電線ケーブ
ル、０６は駆動軸で、この探傷子を管板１の細管２内へ
圧縮ばね０３を縮めて挿入し被検査面を接触子０４によ
り探傷するのであるが、
（１）分割された探傷子本体０１，０２は圧縮ばね０３
により拡がった状態で細管２へ挿入するので、挿入時の
抵抗が大である。When a conventional flaw detector is shown in Fig. 1, 01 and 02 are the main body of the flaw detector, 03 is a compression spring, 04 is a contact, 05 is an electric wire cable, and 06 is a drive shaft. The compression spring 03 is compressed and inserted into 2, and the surface to be inspected is tested using the contact 04.
Since it is inserted into the thin tube 2 in an expanded state, the resistance during insertion is large.
（２）細管２端部に接触子０４力弓１掛り、挿入が困難
となる場合がある。(2) 04 contacts and 1 force are applied to the 2 ends of the thin tube, which may make insertion difficult.
（３） （１）、（２）項に関連して細管２端部のテー
パ角度が小さければ挿入不可能である。(3) Regarding items (1) and (2), if the taper angle of the two ends of the thin tube is small, insertion is impossible.
等の欠点があり、蒸気発生器の細管検査は高放射能雰囲
気中での作業であるため、殆んどが遠隔操作で行なわれ
る。However, since steam generator tube inspections are carried out in a highly radioactive atmosphere, most of them are carried out by remote control.
従って、上記トラブル等の確認は極めて困難であり、検
査装置本体の破損、検査能力の低下に継がる。Therefore, it is extremely difficult to confirm the above-mentioned troubles, which may lead to damage to the inspection device itself and a decrease in inspection ability.
本考案は上記従来の欠点を除去したもので、本考案を蒸
気発生器の細管検査に実施した一実施例を第２図及び゛
第３図について説明すると、３は円柱形状の探傷子本体
で、３−１．３−２に円柱軸方向に２分割されている。The present invention eliminates the above-mentioned drawbacks of the conventional method, and an embodiment of the present invention in which the present invention is applied to the inspection of small tubes in steam generators will be explained with reference to Figs. 2 and 3. 3 is a cylindrical flaw detector body , 3-1, 3-2, and is divided into two parts in the axial direction of the cylinder.
本体３内の貫通穴４に本体３−１，３−２を互に引張り
一体化する複数個の引張りばね５を内装し、引張ばね５
の両端は止めピン６により固定されている。A plurality of tension springs 5 for tensioning and integrating the main bodies 3-1 and 3-2 together are installed in the through hole 4 in the main body 3, and the tension springs 5
Both ends are fixed by locking pins 6.
本体３−２内に本体の円柱軸に垂直方向に摺動する摺動
管７があり、摺動管７へ空気圧ａを供給する空気供給穴
８が穿いており、摺動管７の外形部にはシール材９が装
着されている。There is a sliding tube 7 inside the main body 3-2 that slides in a direction perpendicular to the cylindrical axis of the main body, and an air supply hole 8 for supplying air pressure a to the sliding tube 7 is bored. A sealing material 9 is attached to the.
１０は空気供給用チューブで、空気圧ａは空気供給穴８
を通り摺動管７へ送られる。10 is an air supply tube, and air pressure a is air supply hole 8.
and is sent to the sliding pipe 7.
本体３−１内の中央に摺動管７と一体となっているスラ
イド板１１があり、圧縮ばね１２にて空気圧ａに対抗し
ている。There is a slide plate 11 integrated with the slide tube 7 in the center of the main body 3-1, and is opposed to the air pressure a by a compression spring 12.
スライド板１１には４本１組とした接触子１３が先端が
管板１の細管２に接触し得るように止めピン１４により
固定されている。A set of four contacts 13 are fixed to the slide plate 11 by stop pins 14 so that their tips can come into contact with the thin tubes 2 of the tube plate 1.
１５は電線ケーブルで、本体３−１、スライド板１１を
通り接触子１３に接続している。Reference numeral 15 denotes an electric wire cable that passes through the main body 3-1 and the slide plate 11 and is connected to the contactor 13.
°本体３は支持ピン１６、支持板１７により図示されて
いない検査装置の駆動軸１８と結合している。The main body 3 is connected by a support pin 16 and a support plate 17 to a drive shaft 18 of an inspection device (not shown).
次に、第４図について本考案の作用を述べれば、他の手
段により検査装置が蒸気発生器の管板１面に設置された
状態で、
（１）図示されていない検査装置の電動機より伝達され
た駆動軸１８はＸ方向へ上昇する。Next, the operation of the present invention will be described with reference to FIG. 4. With the inspection device installed on one side of the tube plate of the steam generator by other means, The driven shaft 18 rises in the X direction.
（２）探傷子本体３が管板１の細管２内へ挿入された後
、チューブ１０に空気圧ａを圧入すると、空気圧ａは圧
縮ばね１２の力に打勝ってスライド板１１を押し、本体
３−１．３−２は引張ばね５の引張力に抗してｌだけ拡
がり、接触針１３が細管２内面に密着する。(2) After the flaw detector main body 3 is inserted into the thin tube 2 of the tube plate 1, when air pressure a is pressurized into the tube 10, the air pressure a overcomes the force of the compression spring 12 and pushes the slide plate 11, and the main body 3 -1.3-2 expands by l against the tensile force of the tension spring 5, and the contact needle 13 comes into close contact with the inner surface of the thin tube 2.
この接触針１３の密着力ばばね止めピン１４によりある
程度調整される。The adhesion force of the contact needle 13 can be adjusted to some extent by the spring stopper pin 14.
（３）検査装置の電動機により、Ｘ方向上昇、Ｚ回転し
て、その時の本体３．の位置゛を検知しながら探傷する
。(3) The electric motor of the inspection device moves the main body 3. up in the X direction and rotates in the Z direction. Detects flaws while detecting the position.
（４）検査が完了し、空気圧ａを抜くと、引張ばね５に
て本体３−１．３−２は閉じ、・圧縮ばね１２によりス
ライド板１１は元に戻る。(4) When the inspection is completed and the air pressure a is released, the main body 3-1, 3-2 is closed by the tension spring 5, and the slide plate 11 is returned to its original position by the compression spring 12.
（５）検査装置の電動機により駆動軸１８をＹ方向へ下
降させ、本体３を管板１より引き出す。(5) The electric motor of the inspection device lowers the drive shaft 18 in the Y direction and pulls out the main body 3 from the tube plate 1.
以上１サイクルの作業を遠隔操作で行なうごとができる
。The above one cycle of work can be performed remotely.
以上述べたように本考案は、細管内を探傷する検査装置
において、円柱形状の本体を円柱軸に対して２分割し、
本体内に、２分割せる本体を引張り一体化する引張部材
、圧力を供給する圧力供給路、圧力供給路よりの圧力に
より円柱軸に垂直に摺動する摺動管、摺動管と一体のス
ライド板、スライド板を前記圧力に抗して圧している圧
縮部材、スライド板に取り付けた複数個の接触針、接触
針に接続された電線ケーブルを設けた探傷子であるので
、細管の探傷過程時において、細管への挿入、引抜きが
容易で、管端部での抵抗が全くなくなる等の極めてすぐ
れた効果がある。As described above, the present invention is an inspection device for detecting flaws inside a thin tube, in which a cylindrical main body is divided into two along the cylindrical axis.
Inside the main body, there is a tension member that tensions and integrates the main body that is divided into two parts, a pressure supply path that supplies pressure, a sliding tube that slides perpendicular to the cylinder axis due to the pressure from the pressure supply path, and a slide that is integrated with the sliding tube. The flaw detector is equipped with a compression member that presses a plate and a slide plate against the pressure, multiple contact needles attached to the slide plate, and an electric wire cable connected to the contact needles, so it can be used during the flaw detection process of thin tubes. In this case, it has extremely excellent effects such as easy insertion into and withdrawal from a thin tube, and no resistance at the tube end.
第１図は従来の管内検査用探傷子の断面図、第２図は本
考案の一実施例の正面図、第３図は第２図のＡ−Ａ断面
図、第４図は本考案探傷子の作用状態の断面図である。
１：管板、２：細管、３（３−１，３−２）：探傷子本
体、５：引張りばね、７：摺動管、８：空気供給穴、１
１ニスライド板、１２：圧縮ばね、１３：接触子、１５
：電線ケーブル。Fig. 1 is a sectional view of a conventional flaw detector for pipe inspection, Fig. 2 is a front view of an embodiment of the present invention, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is a flaw detector of the present invention. FIG. 3 is a sectional view of the child in its working state; 1: Tube plate, 2: Thin tube, 3 (3-1, 3-2): Flaw detector body, 5: Tension spring, 7: Sliding tube, 8: Air supply hole, 1
1 nisride plate, 12: compression spring, 13: contactor, 15
: Electric wire cable.
Claims (1)
円柱軸に対して２分割し、該本体内に、２分割せる本体
を互に引張り一体化する引張部材、圧力を供給する圧力
供給路、該圧力供給路よりの圧力により前記円柱軸に垂
直に摺動する摺動管、該摺動管と一体のスライド板、該
スライド板を前記圧力に抗して圧している圧縮部材、前
記スライド板に取り付けた複数個の接触針、該接触針に
接続された電線ケーブルを設けたことを特徴とする管内
検査用探傷子。In an inspection device for detecting flaws inside a thin tube, a cylindrical main body is divided into two along the cylinder axis, and within the main body, a tension member that tensions and integrates the two divided main bodies, a pressure supply path that supplies pressure; A sliding tube that slides perpendicularly to the cylindrical shaft due to pressure from the pressure supply path, a slide plate integrated with the sliding tube, a compression member that presses the slide plate against the pressure, and the slide plate. 1. A flaw detector for inspecting inside a pipe, comprising a plurality of contact needles attached to a pipe, and an electric wire cable connected to the contact needles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977097142U JPS5824783Y2 (en) | 1977-07-22 | 1977-07-22 | Flaw detector for pipe inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977097142U JPS5824783Y2 (en) | 1977-07-22 | 1977-07-22 | Flaw detector for pipe inspection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5425885U JPS5425885U (en) | 1979-02-20 |
| JPS5824783Y2 true JPS5824783Y2 (en) | 1983-05-27 |
Family
ID=29031689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977097142U Expired JPS5824783Y2 (en) | 1977-07-22 | 1977-07-22 | Flaw detector for pipe inspection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5824783Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61143563U (en) * | 1985-02-28 | 1986-09-04 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS454540Y1 (en) * | 1967-09-13 | 1970-03-02 |
-
1977
- 1977-07-22 JP JP1977097142U patent/JPS5824783Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS454540Y1 (en) * | 1967-09-13 | 1970-03-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5425885U (en) | 1979-02-20 |
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