JPH02105036A - Inspecting method for inside of small bore pipe - Google Patents
Inspecting method for inside of small bore pipeInfo
- Publication number
- JPH02105036A JPH02105036A JP63258587A JP25858788A JPH02105036A JP H02105036 A JPH02105036 A JP H02105036A JP 63258587 A JP63258587 A JP 63258587A JP 25858788 A JP25858788 A JP 25858788A JP H02105036 A JPH02105036 A JP H02105036A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- oxalic acid
- small bore
- small
- small diameter
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 18
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 72
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000002950 deficient Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 10
- 238000005498 polishing Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241000219198 Brassica Species 0.000 description 1
- 235000003351 Brassica cretica Nutrition 0.000 description 1
- 235000003343 Brassica rupestris Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000010460 mustard Nutrition 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- 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
- Sampling And Sample Adjustment (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、小口径管内面の検査方法に係り、特に、容器
の下鏡部を貫通した状態に設けられる長尺状小口径管内
面の金属組織調査を行なう場合等に好適な検査方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for inspecting the inner surface of a small-diameter tube, and in particular, to a method for inspecting the inner surface of a long small-diameter tube that is provided through the lower end of a container. This invention relates to an inspection method suitable for metallographic investigation.
［従来の技術］
原子力発電関連施設あるいは火力発電プラントや化学プ
ラント等で使用されている配管の中には、多くの小口径
管が使用されている。[Prior Art] Many small-diameter pipes are used in piping used in nuclear power generation related facilities, thermal power plants, chemical plants, and the like.
例えば、第２図に示すように、沸騰水型原子炉における
原子炉圧力容器の下鏡部１には、原子炉の状態を検出す
る各種センサの信号伝達のための小口径管２等が、上下
貫通状態に溶接部３により取り付けられており、該小口
径管２は、内径が例えば３８ｍｍ程度で長さが数メート
ルに及ぶ長尺状となっている。この場合、溶接部３の部
分は、下鏡部ｌの壁を斜めに貫通する小口径管２を支持
するとともに、小口径管２の伸縮や曲げによる変形力の
影響を受は易く、十分な信頼性を確保することが要求さ
れるとともに、定期検査時等において、溶接部３あるい
はその近傍の小口径管２の管壁の状態を検査することが
望ましい。For example, as shown in FIG. 2, in the lower mirror section 1 of the reactor pressure vessel in a boiling water reactor, there are small diameter pipes 2, etc. for transmitting signals from various sensors that detect the state of the reactor. The small-diameter tube 2 is attached by a welded portion 3 in a vertically penetrating state, and has an elongated shape with an inner diameter of, for example, about 38 mm and a length of several meters. In this case, the welded part 3 supports the small-diameter pipe 2 that diagonally penetrates the wall of the lower mirror part l, and is easily affected by deformation force due to expansion, contraction, and bending of the small-diameter pipe 2. In addition to being required to ensure reliability, it is desirable to inspect the condition of the pipe wall of the small diameter pipe 2 at or near the welded portion 3 during periodic inspections and the like.
従来、管内面に転写フィルムを押圧して、金属組織を調
査（スンプ採取）することにより、溶接によって取り付
けられている管壁が、集中応力を受けているか、異常を
生じているかを検査する方法が考えられている。Conventionally, a transfer film is pressed onto the inner surface of the pipe and the metallographic structure is examined (sampling) to determine whether the pipe wall, which is attached by welding, is under concentrated stress or is abnormal. is considered.
「発明が解決しようとする課題」
しかし、前述した転写フィルムによる検査方法は、管の
口径が比較的大きい場合や、管が短い場合には適用可能
であるが、第２図例の場合のように、長尺状の小口径管
２が下鏡部ｌに上下方向に取り付けられているとともに
、転写フィルムを下方から挿入しなければならない条件
下であると、転写工程に至るまでの前処理作業が困難と
なり、下方の入り口近傍において、例えば５ｃｍ程度の
奥行きまでしか適用できず、数メートルに及ぶ長尺状の
ものは不可能とされている。"Problem to be Solved by the Invention" However, the above-mentioned inspection method using a transfer film can be applied when the diameter of the tube is relatively large or when the tube is short, but as in the case of the example in Figure 2, In addition, if the long small-diameter tube 2 is attached to the lower mirror part l in the vertical direction and the transfer film must be inserted from below, the pre-processing work up to the transfer process is difficult. This makes it difficult to apply, for example, to a depth of about 5 cm in the vicinity of the lower entrance, and it is impossible to use a long one that extends several meters.
本発明は、このような課題に鑑みてなされたものである
。つまり、小口径管の奥深い部分の金属組織の調査を容
易に行なうことを目的としているものである。The present invention has been made in view of such problems. In other words, the purpose is to easily investigate the metal structure deep inside a small diameter pipe.
「課題を解決するための手段」
立設状態の小口径管の中に、封止具とこれを上向きに貫
通する液供給ノズルとを挿入して、封止具の上にしゅう
酸液を貯留し、該しゅう酸雰囲気の小口径管内面を電界
腐食させた後に、小口径管内面に有機溶剤を付着させる
とともに、転写フィルムを有機溶剤の付着している小口
径管内面に押圧して内面状態を転写する構成を有するも
のである。``Means for solving the problem'' A sealing device and a liquid supply nozzle that passes upward through the tube are inserted into a small diameter pipe in an upright state, and oxalic acid solution is stored on top of the sealing device. After electrolytically corroding the inner surface of the small-diameter tube in the oxalic acid atmosphere, an organic solvent is applied to the inner surface of the small-diameter tube, and a transfer film is pressed onto the inner surface of the small-diameter tube to which the organic solvent has adhered to change the condition of the inner surface. It has a configuration for transferring.
「作用」
封止具によって小口径管の内部を上下に区画し、その上
の管式にしゅう酸液を供給すると、しゅう酸が封止具の
上に貯留する。該しゅう酸雰囲気の小口径管内面を電界
腐食させることにより、小口径管の内部に欠陥部が生じ
ていた場合には、その部分がより顕著に電解腐食される
。"Operation" When the inside of a small-diameter pipe is divided into upper and lower parts by a sealing device, and oxalic acid solution is supplied into the pipe above the pipe, oxalic acid is stored on the sealing device. By electrolytically corroding the inner surface of the small-diameter tube in the oxalic acid atmosphere, if a defective portion occurs inside the small-diameter tube, that portion will be electrolytically corroded more significantly.
電解腐食の後に、小口径管内面に有機溶剤を付着させた
状態で、転写フィルムを押圧すると、小口径管内面の凹
凸形状により、接触圧力の大きい部分の転写フィルムが
溶解し、欠陥部が生じていた場合には、その範囲の溶解
遅れやむらが生じて、その表面形状が転写される。After electrolytic corrosion, if a transfer film is pressed with an organic solvent attached to the inner surface of a small diameter tube, the uneven shape of the inner surface of the small diameter tube will cause the transfer film to dissolve in areas where the contact pressure is high, resulting in defective areas. If it is, there will be a delay in dissolution or unevenness in that range, and the surface shape will be transferred.
転写フィルムは、小口径管の外部に取り出して精密に検
査され、欠陥部の有無が判別されるものである。The transfer film is taken out of the small-diameter tube and inspected precisely to determine whether there are any defects.
「実施例ｊ
以下、本発明に係る小口径管内面の検査方法の一実施例
を第１図に基づいて説明する。Embodiment J An embodiment of the method for inspecting the inner surface of a small diameter pipe according to the present invention will be described below with reference to FIG.
第１図（Ａ）に示すように、下鏡部１に対して小口径管
２が立設状！！（鉛直状１りに溶接部３により取り付け
られている場合であると、溶接部３によって囲まれてい
る付近の小口径管内面の検査が実施される。つまり、溶
接部３によって支持されている小口径管２の管壁が、集
中応力等により影響を受けていないかどうかの検査、金
属組織調査が行なわれる。As shown in FIG. 1(A), a small diameter tube 2 is erected with respect to the lower mirror part 1! ! (If the pipe is attached vertically by the welded part 3, the inner surface of the small-diameter pipe surrounded by the welded part 3 is inspected. An inspection to see if the wall of the small diameter pipe 2 has been affected by concentrated stress or the like and a metallographic investigation are performed.
〈研磨工程〉
以下、説明する各作業に先立って、検査対象箇所の研磨
が行なわれる。小口径管２の内径が小さい（例えば５０
ｍｍ以下）場合であると、例えば第１図（Ａ）に示す研
磨装ｆＩｔ４が適用される。<Polishing Step> Prior to each of the operations described below, the area to be inspected is polished. The inner diameter of the small diameter pipe 2 is small (for example, 50
mm or less), for example, a polishing device fIt4 shown in FIG. 1(A) is applied.
該研磨装置４は、下７ラング部２１に取り付けられる取
り付は部材４１と、該取り付は部材４１を貫通して小口
径管２の内部に挿入される支持スリーブ４ｂと、該支持
スリーブ４ｂの中に回転自在に挿入されている回転力伝
達ワイヤ４Ｃと、該回転力伝達ワイヤ４ｃの先端に取り
付けられるブラシ状等の研磨部材４ｄと、回転力伝達ワ
イヤ４Ｃを回転駆動させるための駆動源（モータ ）４
ｅと、小口径管内部の複数箇所において支持スリーブ４
ｂの振れ止めを行なうスペーサ４ｆとを具備するもので
ある。なお、符号４ｇはボルト・ナツト等の締結具であ
る。The polishing device 4 includes a mounting member 41 attached to the lower rung portion 21, a support sleeve 4b inserted into the small diameter pipe 2 through the mounting member 41, and the support sleeve 4b. A rotational force transmission wire 4C rotatably inserted into the rotational force transmission wire 4C, a brush-like polishing member 4d attached to the tip of the rotational force transmission wire 4c, and a drive source for rotationally driving the rotational force transmission wire 4C. (motor) 4
e, and support sleeve 4 at multiple locations inside the small diameter pipe.
It is provided with a spacer 4f that provides a steady rest. Note that the reference numeral 4g is a fastener such as a bolt or nut.
そして、駆動源（Ｃを作動させることにより、研磨部材
４ｄを回転させて小口径管２の所望の箇所、検査対象箇
所の研摩を行なう。Then, by activating the drive source (C), the polishing member 4d is rotated to polish a desired portion of the small diameter tube 2, a portion to be inspected.
くしゅう酸供給工程〉
研磨作業が終了した小口径管２の内部には、研磨装置を
撤去した状態で、第１図（Ｂ）に示すように、洗浄液供
給系５に接続された洗浄液噴出部材５１、直流電源６に
接続された電極７、しゅう酸液供給系８に接続された液
供給ノズル８畠、封止具９１等が挿入される。これら各
器具は、小口径管２の内部に第１図（Ａ）に準じて支持
スリーブ４ｂを挿入すること等により支持されるが、第
１図（Ｂ）では記載が省略されている。Citric acid supply process> After the polishing work is completed, inside the small diameter pipe 2, with the polishing device removed, there is a cleaning liquid spouting member connected to the cleaning liquid supply system 5, as shown in FIG. 1(B). 51, an electrode 7 connected to a DC power source 6, a liquid supply nozzle 8 connected to an oxalic acid solution supply system 8, a sealing tool 91, etc. are inserted. Each of these instruments is supported by inserting a support sleeve 4b into the small diameter tube 2 as shown in FIG. 1(A), but the illustration is omitted in FIG. 1(B).
また、封止具９ａには、これを空気圧力により膨張させ
る封止具作動系９が接続されるとともに、電極７に接続
状態の電気ケーブル６ａ、液供給配管等が貫通状態に支
持されている。Further, a sealing device actuating system 9 is connected to the sealing device 9a to inflate it using air pressure, and an electric cable 6a connected to the electrode 7, liquid supply piping, etc. are supported in a penetrating state. .
そして、封止具作動系９から加圧空気を送り込んで、封
止具９１を膨張させて小口径管２の内部を上下に区画し
、しゅう酸液供給系８の作動により、液供給ノズル８１
からしゅう酸液（例えば濃度１０％、常温）を供給して
、封止具９！の上にしゅう酸液を貯留する。Then, pressurized air is sent in from the sealing device operating system 9 to expand the sealing device 91 to divide the inside of the small diameter pipe 2 into upper and lower parts, and by operating the oxalic acid liquid supply system 8, the liquid supply nozzle 81
Supply a mustard acid solution (for example, 10% concentration, room temperature) and seal the sealing tool 9! Store the oxalic acid solution on top.
〈電解腐食工程〉
しゅう酸液を貯留した状態、つまり、検査対象箇所をし
ゅう酸雰囲気に保持しながら、直流電源６から給電する
ことにより、検査対象箇所の電解腐食を行なう。この電
解腐食により、小口径管２の内面に、欠陥部が生じてい
た場合は、その部分が強調されるように電解腐食される
。また、電解腐食を行なう時間は、前記濃度１０％液、
常温の場合、例えば５分ないし１０分程度とされる。<Electrolytic Corrosion Process> Electrolytic corrosion of the inspection target area is performed by supplying power from the DC power supply 6 while keeping the oxalic acid solution in a stored state, that is, the inspection target area is maintained in an oxalic acid atmosphere. If a defective portion is generated on the inner surface of the small diameter tube 2 due to this electrolytic corrosion, the defective portion is electrolytically corroded so as to be emphasized. In addition, the time for performing electrolytic corrosion is as follows:
In the case of room temperature, the heating time is, for example, about 5 to 10 minutes.
くしゅう酸抜き取り工程〉
しゅう酸雰囲気の小口径管内面、検査対象箇所を電界腐
食させた後に封止具９畠の空気を抜いて、貯留させてお
いたしゅう酸を流下させる。Oxalic acid removal process> After electrolytic corrosion is applied to the inner surface of the small-diameter pipe in an oxalic acid atmosphere, and the area to be inspected, the air in the sealing device 9 is removed and the stored oxalic acid is allowed to flow down.
くアルコール洗浄工程及びエアプロー工程〉洗浄液供給
系５の作動により、洗浄液としてアルコールを洗浄液噴
出部材５ａから噴出させ、検査対象箇所に付着していた
しゅう酸液を洗い流した後、洗浄液の供給に代えて空気
を送り込んで、検査対象箇所に付着したアルコール分を
蒸発させて除去する。Alcohol cleaning process and air blowing process> By operating the cleaning liquid supply system 5, alcohol is jetted out as a cleaning liquid from the cleaning liquid jetting member 5a, and after washing away the oxalic acid liquid adhering to the inspection target area, the cleaning liquid is replaced with Air is pumped in to evaporate and remove alcohol adhering to the area to be inspected.
〈有機溶剤供給工程〉
アルコール洗浄が終了した小口径管２の内部に、挿入さ
れていた第１図（Ｂ）に示す各器具を除去した状態で、
第１図（Ｃ）に示すように、転写具作動系１Ｇに接続さ
れＩ；転写部材１０１１有機溶剤供給系１１に接続され
たスプレー具１１！、ガイド部材１２等が挿入される。<Organic solvent supply process> After removing the instruments shown in FIG. 1(B) that had been inserted into the small diameter pipe 2 after alcohol cleaning,
As shown in FIG. 1(C), the spray tool 11 is connected to the transfer tool operating system 1G; the transfer member 1011 is connected to the organic solvent supply system 11! , guide member 12, etc. are inserted.
第１図（Ｃ）において、これら各器具を支持する支持ス
リーブ４ｂ等の記載は省略されている。In FIG. 1(C), illustrations of the support sleeve 4b and the like that support these instruments are omitted.
有機溶剤供給系１１からアセトン等の有機溶剤を供給し
て、スプレー具ＩＩｓから噴出させ、所望の検査対象箇
所の小口径管内面に、適量の有機溶剤を付着させる。An organic solvent such as acetone is supplied from the organic solvent supply system 11 and is ejected from the spray tool IIs, so that an appropriate amount of the organic solvent is deposited on the inner surface of the small diameter pipe at the desired inspection target location.
く転写工程〉
該有機溶剤が検査対象箇所に付着している状態において
、転写部材１０ａの位置を下げるとともに、拡径を行な
って、その外面に取り付けた転写フィルム１３を有機溶
剤の付着している小口径管内面に押圧して、転写フィル
ム１３の表面が金属組織の凹凸形状に応じて溶解される
時間（例えば数分以上）保持することにより、金属組織
の状態を転写フィルム１３に転写する。Transfer process> With the organic solvent attached to the inspection target area, the position of the transfer member 10a is lowered, the diameter is expanded, and the transfer film 13 attached to the outer surface is removed from the area to be inspected. The state of the metallographic structure is transferred to the transfer film 13 by pressing it against the inner surface of the small-diameter tube and holding the transfer film 13 for a period of time (for example, several minutes or more) for the surface of the transfer film 13 to dissolve according to the uneven shape of the metallographic structure.
く金属組織の調査工程〉
次いで、転写部材ＩＱｓを下降させて転写フィルム１３
を小口径管２の外に取り出し、検査対象箇所の金属組織
の精密検査が行なわれ、フィルム１３に転写された金属
組織のパターンから、小口径管２の内面が正常であるか
、欠陥部が生じているか否かの判定がなされる。Metal structure investigation process> Next, the transfer member IQs is lowered to transfer the transfer film 13.
is taken out of the small diameter tube 2, and a detailed inspection of the metallographic structure of the area to be inspected is performed.From the pattern of the metallographic structure transferred to the film 13, it can be determined whether the inner surface of the small diameter tube 2 is normal or if there are any defects. A determination is made as to whether or not this has occurred.
なお、第１図（Ａ）ないしくＣ）の例では、小口径管２
の中に、複数の器具を同時に送り込むような説明をした
が、工程順に影響を及ぼさない範囲で、器具を個々に送
り込むようにすることもできる。In addition, in the example of FIG. 1 (A) to C), the small diameter pipe 2
In the above explanation, a plurality of instruments are fed at the same time, but it is also possible to feed the instruments individually as long as the order of the steps is not affected.
「発明の効果」
以上説明したように、本発明に係る小口径管内面の検査
方法は、立設状態の小口径管に対して封止具と液供給ノ
ズルとを挿入してしゅう酸液を貯留し、小口径管内面を
電界腐食させた後に、小口径管内面に有機溶剤を付着さ
せて、転写フィルムを小口径管内面に押圧して内面状態
を転写するものであるから、
■検査対象箇所が小口径管の奥深い部分であっても、各
検査器具を送り込んで検査対象箇所の金属組織の調査を
容易に行なうことができ、小口径管の長さの制限を受け
ることが少ない。"Effects of the Invention" As explained above, the method for inspecting the inner surface of a small-diameter pipe according to the present invention involves inserting a sealing tool and a liquid supply nozzle into a small-diameter pipe in an upright state, and applying an oxalic acid solution. After storing and electrolytically corroding the inner surface of the small diameter tube, an organic solvent is applied to the inner surface of the small diameter tube and a transfer film is pressed onto the inner surface of the small diameter tube to transfer the inner surface condition. Even if the location is a deep part of a small diameter pipe, each inspection instrument can be sent in to easily investigate the metallographic structure of the location to be inspected, and there is little restriction due to the length of the small diameter pipe.
■容器の下鏡部のように、容器の壁に対して小口径管が
斜めに貫通する箇所にあっても、容易に適用することが
できる。■It can be easily applied even in places where a small-diameter pipe penetrates diagonally through the wall of the container, such as the lower end of the container.
等の優れた効果を奏する。It has excellent effects such as
第１図（Ａ）ないし第１図ＣＣ）は本発明に係る小口径
管内面の検査方法の一実施例における工程を説明する正
断面図、第２図は容器の下鏡部を貫通する小口径管の例
を示す正断面図である。
１・・・・・・下鏡部、
２・・・・・・小口径管、
２ａ・・・・・・下フランジ部、
３・・・・・・溶接部、
４・・・・・・研磨装置、
４１・・・・・・取り付は部材、
４ｂ・・・・・・支持スリーブ、
４ｃ・・・・・・回転力伝達ワイヤ、
４ｅ・・・・・・駆動源（モータ ）
４ｄ・・・・・・研磨部材、
４ｆ・・・・・・スペーサ、
４ト・・・・・締結具、
５・・・・・・洗浄液供給系、
Ｓｌ・・・・・・洗浄液噴出部材、
６・・・・・・直流電源、
６１・・・・・・電気ケーブル、
７・・・・・・電極、
８・・・・・・しゅう酸液供給系、
８１・・・・・・液供給ノズル、
９・・・・・・封止具作動系、
９８・・・・・・封止具、
１０・・・・・・転写具作動系、
ｌｏｇ・・・・・・転写部材、
１１・・・・・・有機溶剤供給系、
１１１・・・・・・スプレー具、
１２・・・・・・ガイド部材、
１３・・・・・・転写フィルム。FIGS. 1(A) to 1CC) are front sectional views illustrating steps in an embodiment of the method for inspecting the inner surface of a small diameter pipe according to the present invention, and FIG. It is a front sectional view showing an example of a diameter pipe. 1...Lower mirror part, 2...Small diameter pipe, 2a...Lower flange part, 3...Welded part, 4... Polishing device, 41...Mounting member, 4b...Support sleeve, 4c...Rotational force transmission wire, 4e...Drive source (motor) 4d ... Polishing member, 4f ... Spacer, 4 T ... Fastener, 5 ... Cleaning liquid supply system, Sl ... Cleaning liquid jetting member, 6...DC power supply, 61...Electric cable, 7...Electrode, 8...Oxalic acid solution supply system, 81...Liquid Supply nozzle, 9... Sealing tool operating system, 98... Sealing tool, 10... Transfer tool operating system, log... Transfer member, 11 ... Organic solvent supply system, 111 ... Spray tool, 12 ... Guide member, 13 ... Transfer film.
Claims (1)
通する液供給ノズルとを挿入して、封止具の上にしゅう
酸液を貯留し、該しゅう酸雰囲気の小口径管内面を電界
腐食させた後に、小口径管内面に有機溶剤を付着させる
とともに、転写フィルムを有機溶剤の付着している小口
径管内面に押圧して内面状態を転写することを特徴とす
る小口径管内面の検査方法。A sealing device and a liquid supply nozzle penetrating upward through the sealing device are inserted into a small diameter pipe in an upright state, and an oxalic acid solution is stored on the sealing device, and the small diameter pipe in the oxalic acid atmosphere is After the inner surface of the tube is electrolytically corroded, an organic solvent is applied to the inner surface of the small diameter tube, and a transfer film is pressed onto the inner surface of the small diameter tube to which the organic solvent is attached to transfer the inner surface condition. Inspection method for inner surface of bore pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258587A JP2923510B2 (en) | 1988-10-14 | 1988-10-14 | Inspection method of small diameter pipe inner surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258587A JP2923510B2 (en) | 1988-10-14 | 1988-10-14 | Inspection method of small diameter pipe inner surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02105036A true JPH02105036A (en) | 1990-04-17 |
| JP2923510B2 JP2923510B2 (en) | 1999-07-26 |
Family
ID=17322330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63258587A Expired - Lifetime JP2923510B2 (en) | 1988-10-14 | 1988-10-14 | Inspection method of small diameter pipe inner surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923510B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237133A (en) * | 2018-09-12 | 2019-01-18 | 上海宝冶工程技术有限公司 | A kind of high temperature corrosion medium drainage device based on welded corner joint |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57154038A (en) * | 1981-03-20 | 1982-09-22 | Jgc Corp | Sump checking device |
| JPS6056251U (en) * | 1983-09-27 | 1985-04-19 | 三菱重工業株式会社 | Jig for collecting replicas |
-
1988
- 1988-10-14 JP JP63258587A patent/JP2923510B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57154038A (en) * | 1981-03-20 | 1982-09-22 | Jgc Corp | Sump checking device |
| JPS6056251U (en) * | 1983-09-27 | 1985-04-19 | 三菱重工業株式会社 | Jig for collecting replicas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237133A (en) * | 2018-09-12 | 2019-01-18 | 上海宝冶工程技术有限公司 | A kind of high temperature corrosion medium drainage device based on welded corner joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2923510B2 (en) | 1999-07-26 |
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