JPS62270894A - Repairing method for pressure vessel with lining - Google Patents
Repairing method for pressure vessel with liningInfo
- Publication number
- JPS62270894A JPS62270894A JP11308986A JP11308986A JPS62270894A JP S62270894 A JPS62270894 A JP S62270894A JP 11308986 A JP11308986 A JP 11308986A JP 11308986 A JP11308986 A JP 11308986A JP S62270894 A JPS62270894 A JP S62270894A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- wall
- pressure
- lining
- pressure vessel
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 28
- 230000008439 repair process Effects 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 238000003466 welding Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012611 container material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
本発明は、腐食性内容物を収めるためにライニングを施
した圧力容器の補修方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method of repairing a pressure vessel lined to contain corrosive contents.
（従来の技術）
上述例のライニングを有する圧力容器は一般に第６図（
Ａ）に示すように炭素鋼からなる耐圧壁（Ｉ）の内側に
耐食材料からなるライナー（２）をライニングしている
が、運転稼動中に、ライナー（２）に何らかの欠陥や変
化が生じて、腐食性内容物がライニング欠陥穴（３）を
通り、かつ符号（４）に示す流路を流れ、耐圧壁（１）
に設けている洩れ検知孔（５）を経て外部に流出するｙ
Ｂ ＜ｇが発生すると、耐圧壁を構成する炭素鋼に耐食
性がないため、その損傷が太き（、時には耐圧壁（１）
の内壁（ｌａ）が第６図（Ｂ）の如←腐食によってえぐ
られる。(Prior Art) A pressure vessel having a lining as described above is generally shown in FIG.
As shown in A), a liner (2) made of a corrosion-resistant material is lined inside the pressure wall (I) made of carbon steel, but some defects or changes may occur in the liner (2) during operation. , the corrosive contents pass through the lining defect hole (3) and flow through the flow path indicated by the symbol (4), and the pressure wall (1)
y leaks outside through the leak detection hole (5) provided in
When B<g occurs, the carbon steel that makes up the pressure wall has no corrosion resistance, so the damage is severe (and sometimes the pressure wall (1)
The inner wall (la) of is gouged out by corrosion as shown in Fig. 6(B).
そのため、部分的であるが、腐食されたあとの耐圧壁の
肉厚は強度を損なうものとなるので、従来は、腐食にて
生じたクボミ部（Ｇ）を第６図（Ｃ）のように肉盛り溶
接（７）シて補修していた。この場合は、肉盛り溶接（
７）は耐圧壁（１）の内壁（Ｉａ）と而−に平坦加工し
、その上に補修ライナー（８）を取付けることでなされ
る。For this reason, the thickness of the pressure-resistant wall after being partially corroded will impair its strength, so conventionally, the hollow part (G) caused by corrosion was It was repaired by overlay welding (7). In this case, overlay welding (
7) is achieved by flattening the inner wall (Ia) of the pressure wall (1) and attaching a repair liner (8) thereon.
（発明が解決しようとする問題点）
しかし、上記の溶接補修による方法は、耐圧壁の材料に
溶接残留応力が大きく生じ、従って溶接後に熱処理を行
う必要が生じ、これによるＶｒ ７ｍが付近のライナー
へ熱影響を与えると共に、この溶接後熱処理を行う場合
もライニングがなされているのでライナーの耐食性の低
ドを考えると自由に高温に昇温することができない制約
があった。(Problem to be Solved by the Invention) However, in the above-mentioned welding repair method, a large amount of welding residual stress occurs in the material of the pressure wall, and therefore it becomes necessary to perform heat treatment after welding. In addition, even when this post-weld heat treatment is performed, the liner is lined, so considering the low corrosion resistance of the liner, there is a restriction that the temperature cannot be freely raised to a high temperature.
また、大型塔からなる圧力容器では、該塔を一旦倒して
、ライナーも溶接後熱処理の熱影響を受けない範囲まで
、または全面を剥ぎ取る必要が出てくるので、溶接によ
る補修は実質的に不可能に近い場合もあった。In addition, in pressure vessels consisting of large towers, it is necessary to collapse the tower and remove the liner to the extent that it is not affected by post-weld heat treatment, or to remove the entire liner, so repairs by welding are virtually impossible. In some cases it was nearly impossible.
本発明は以−Ｌの点に鑑み、耐圧壁を肉盛り溶接しない
で補修できる方法の提供を目的とする。In view of the above points, the present invention aims to provide a method for repairing a pressure wall without build-up welding.
（問題点を解決するための手段）
本発明は、腐食部近くの耐圧壁内面に円筒状のスペーサ
を密着配置して圧力容器内径を縮径した後、その縮径部
の上からライニングを施す圧力容器の補修方法を特徴と
する。(Means for solving the problem) The present invention reduces the inner diameter of the pressure vessel by closely arranging a cylindrical spacer on the inner surface of the pressure wall near the corroded part, and then applies lining over the reduced diameter part. Features a method for repairing pressure vessels.
（作用）
上記本発明によれば、溶接による肉盛りを施すことなく
スペーサおよびライナーによる補修が行え、しかも腐食
により耐圧壁の肉厚が不足しても、上記スペーサの配置
によって容器欠陥部の内径を他の部分よりも小さくでき
、従ってこの部は内圧による必要耐圧壁の厚さは小さく
てすむので、耐Ｉ［壁の強度不足を十分に補うことがで
きる。(Function) According to the present invention, it is possible to repair with a spacer and a liner without applying build-up by welding, and even if the thickness of the pressure wall is insufficient due to corrosion, the inner diameter of the defective part of the container can be fixed by the arrangement of the spacer. can be made smaller than other parts, and therefore, the thickness of the pressure-resistant wall required for this part due to internal pressure is small, so that the lack of strength of the wall can be sufficiently compensated for.
（実施例） 以上、本発明方法を図面を用いて説明する。(Example) The method of the present invention will be described above with reference to the drawings.
前述のように外ｍくに流出する腐食性内容物によって腐
食が耐圧壁（＋）に発生した場合は、第１図に示すよう
に、腐食によってクボミｆｆｉ＜（ｅ）が出きた部分の
ライナー（２）を上ド所要範囲にわたり剥ぎ取り、次に
圧力容器内に円筒状に組めるスペーサ（鉄片）（９）を
複数個入れ、これを円筒状に組１７、てて内壁（１ａ）
に密着させ、しかして該腐食部近くの容ＪＭ内径をスペ
ーサ（９）で縮径し、このスペーサ（９）の上にライニ
ングを施す。（１０）は補修のためのライナーである。As mentioned above, if corrosion occurs on the pressure wall (+) due to corrosive contents flowing outside, as shown in Figure 1, the liner ( 2) is peeled off over the required range of the upper part, and then a plurality of spacers (iron pieces) (9) that can be assembled into a cylindrical shape are put into the pressure vessel, assembled into a cylindrical shape 17, and the inner wall (1a)
Then, the inner diameter of the JM near the corroded part is reduced with a spacer (9), and a lining is applied on top of the spacer (9). (10) is a liner for repair.
この場合、スペーサ（９）は円周方向に１２〜１６分割
構成し、このスペーサ内外面を、一方では圧力壁（１）
の内壁面（ｌａ）に沿い、他方ではライニング施工がし
やすいように機械加工しておく。In this case, the spacer (9) is divided into 12 to 16 parts in the circumferential direction, and the inner and outer surfaces of the spacer are connected to the pressure wall (1) on the one hand.
Along the inner wall surface (la), the other side is machined to facilitate lining construction.
また、欠陥部から離れた部位のライナー（２）と、新た
な補修のためのライナー（１Ｇ）とを円滑にむすぶため
、上記スペーサ（９）の上下部に内面がテーパ加圧（１
１）された補助スペーサ（１２）を入れてライニング施
工がやりやすいようにする。In addition, in order to smoothly connect the liner (2) in the area away from the defective part and the new liner (1G) for repair, the upper and lower parts of the spacer (9) are pressurized with tapered inner surfaces (1G).
1) Insert the auxiliary spacer (12) to make lining construction easier.
このようになせば、腐食によるクボミ部（６）はスペー
サ（３）およびライナー（１０）で覆われて補修される
と共に、スペーサ（９）が新たな耐圧壁を構成すること
になり、またこの補修部分ではスペーサ（９）によって
圧力容器の内径が縮径されたことになるので、クボミ部
（６）を埋めずとも、耐圧壁（＋）の強度は十分なもの
となる。If this is done, the hollow part (6) caused by corrosion will be covered and repaired with the spacer (3) and liner (10), and the spacer (9) will constitute a new pressure-resistant wall. Since the inner diameter of the pressure vessel is reduced by the spacer (9) in the repaired portion, the strength of the pressure wall (+) will be sufficient even without filling the hollow portion (6).
計算によれば、例えば
圧カニ ２００ｋｇ／ｃ♂Ｇ
圧力容器内径の内径：１０００．冒
容器材料： ５Ｂ４９
容器胴部の肉厚＝９２１
ライナーの厚み＋５龍
とする時、ライナーからの洩れにより胴部（耐圧壁）の
腐食によって１５ｍ−の深さによるクボミが発生した場
合、スペーサによる仮塔壁を内壁面に取付け、クボミ部
近傍の容器内径をＳ ＯＯ、、とすると、この欠陥部の
７妥肉厚は７３．１＋ａｍとなり、一方りボミ後の胴部
（耐圧壁）厚さく全厚からクボミ深さを差し引いた値）
は７７開であり、士、記腐食にもかかわらず、使用に耐
える圧力容器に再生された。According to the calculation, for example, pressure crab 200kg/c♂G pressure vessel inner diameter: 1000. Affected container material: 5B49 When the wall thickness of the container body = 921 and the thickness of the liner + 5mm, if a hollow occurs at a depth of 15 m due to corrosion of the body (pressure wall) due to leakage from the liner, the spacer If the temporary tower wall is attached to the inner wall surface and the inner diameter of the container near the hollow part is SOO, then the appropriate wall thickness of this defective part is 73.1+am, while the thickness of the body (pressure-bearing wall) after the hollow part is (The value obtained by subtracting the hollow depth from the total thickness)
The vessel was opened in 1977, and despite severe corrosion, it was rebuilt into a usable pressure vessel.
尚、スペーサ（９）を耐圧壁（１）に取付ける作業を容
易にするためには、第２図に示すようにスペーサ（９）
の分割部に隙間（＋３）を設けて、ここからＰＪ！（＋
４）を耐圧壁（１）に打込み、円周方向に均等に隙間調
整を施すことが望ましい。In addition, in order to facilitate the work of attaching the spacer (9) to the pressure wall (1), as shown in Figure 2, the spacer (9)
Create a gap (+3) at the dividing part and start PJ from here! (+
4) into the pressure wall (1), and it is desirable to adjust the gap evenly in the circumferential direction.
尚、スペーサ（９）を小さく分割しておくのは、圧力容
器（Ａ）の上部入口（＋５）が第３図のように圧力容Ｚ
（Ａ）の内径に比して小さい場合が多く、大きいスペー
サ（９）を挿入できないためである。従って、第４図の
ように上部入口（１５）が圧力容器内径と等しい場合は
、第５図のようにスペーサ（９）を上下に分割したリン
グスペーサ構成として、これを圧力容器内部で積層使用
することもできる。The spacer (9) is divided into small pieces so that the upper inlet (+5) of the pressure vessel (A) is connected to the pressure volume Z as shown in Figure 3.
This is because it is often smaller than the inner diameter of (A), and a large spacer (9) cannot be inserted. Therefore, if the upper inlet (15) is equal to the inner diameter of the pressure vessel as shown in Figure 4, a ring spacer structure in which the spacer (9) is divided into upper and lower parts is used as shown in Figure 5, and these are stacked inside the pressure vessel. You can also.
（発明の効果）
以上詳述したように本発明によれば、腐食により耐圧壁
の肉厚が不足した圧力容器であっても、溶接補修を施さ
すとも再生可能となるので、溶接残留応力を取除くため
の熱処理が不要であり、ライナーへの熱影響がなく、ま
た大型基であっても簡単に補修できるメリットがある。(Effects of the Invention) As detailed above, according to the present invention, even if a pressure vessel has a pressure-resistant wall that is insufficiently thick due to corrosion, it can be regenerated by welding repair, thereby reducing welding residual stress. There is no need for heat treatment to remove the liner, there is no heat effect on the liner, and even large bases can be easily repaired.
第１図は本発明にかかる補修方法を説明するための圧力
容器の縦断面図、第２図は第１図の■−■線矢視切断図
、第３図および第４図は異なる上部人口を有した圧力容
器の縦断面概略図、第５図は使用するスペーサの変形例
を示す要部断面図、第６図（Ａ）（Ｂ）（Ｃ）は腐食発
生原因と従来の補修方法とを説明する図面である。
（１）・・・耐圧壁、（２）（１０）・・・ライナー、
（６）・・・クボミ部、（９）（１２）・・・スペーサ
。
第１ 図
第２図
第３図
第５図Fig. 1 is a longitudinal cross-sectional view of a pressure vessel for explaining the repair method according to the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, and Figs. 3 and 4 show different upper parts. Fig. 5 is a sectional view of the main part showing a modified example of the spacer used, and Fig. 6 (A), (B), and (C) show the causes of corrosion and conventional repair methods. FIG. (1)...Pressure wall, (2)(10)...liner,
(6)...Kubo part, (9)(12)...Spacer. Figure 1 Figure 2 Figure 3 Figure 5
Claims (1)
の補修方法であって、上記腐食部近くの耐圧壁内面に円
筒状のスペーサを密着配置して圧力容器内径を縮径した
後、その縮径部の上からライニングを施すことを特徴と
するライニングを有する圧力容器の補修方法。This is a repair method when the pressure wall of a pressure vessel having a lining is corroded, and the method includes reducing the inner diameter of the pressure vessel by closely arranging a cylindrical spacer on the inner surface of the pressure wall near the corroded part, and then reducing the inner diameter of the pressure vessel. A method for repairing a pressure vessel having a lining, the method comprising applying a lining from above the lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11308986A JPS62270894A (en) | 1986-05-16 | 1986-05-16 | Repairing method for pressure vessel with lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11308986A JPS62270894A (en) | 1986-05-16 | 1986-05-16 | Repairing method for pressure vessel with lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62270894A true JPS62270894A (en) | 1987-11-25 |
Family
ID=14603201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11308986A Pending JPS62270894A (en) | 1986-05-16 | 1986-05-16 | Repairing method for pressure vessel with lining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62270894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996009136A1 (en) * | 1994-09-22 | 1996-03-28 | Snamprogetti S.P.A. | Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea |
| GB2423310A (en) * | 2005-02-22 | 2006-08-23 | Arch Timber Protection Ltd | Method of generating a pressure differential |
-
1986
- 1986-05-16 JP JP11308986A patent/JPS62270894A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996009136A1 (en) * | 1994-09-22 | 1996-03-28 | Snamprogetti S.P.A. | Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea |
| CN1073488C (en) * | 1994-09-22 | 2001-10-24 | 斯南普罗吉蒂联合股票公司 | Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the prodn. of urea |
| GB2423310A (en) * | 2005-02-22 | 2006-08-23 | Arch Timber Protection Ltd | Method of generating a pressure differential |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4178966A (en) | Tube plug | |
| CN106624405B (en) | Method and system for repairing damage of tube plate and tube hole of steam generator of nuclear power station | |
| US2631015A (en) | Continuous helical liner for vessels | |
| US4819315A (en) | Process for attachment of a hollow cylindrical component within a tube and cylindrical component for carrying out this process | |
| US2916308A (en) | Welded branch connection with shrunkon reinforcing sleeve | |
| JPS62270894A (en) | Repairing method for pressure vessel with lining | |
| US5796797A (en) | Method for sealing a stub tube in a nuclear reactor | |
| DE1047111B (en) | Vessel with protective metal lining | |
| US20140353289A1 (en) | Method for closing an aperture on a blade of a gas turbine | |
| CN107076355A (en) | A kind of laminating structure and its processing method based on tantalum plate and steel composite board | |
| JPH03117897A (en) | Heat exchanger | |
| RU2352854C2 (en) | Repair method of defective pressurised pipeline section | |
| JPH0131832Y2 (en) | ||
| JP4936813B2 (en) | Core shroud welding method | |
| KR100509196B1 (en) | The method of lining of welding line for chemistry fluid tank made of high quality | |
| CN108637513B (en) | Welding method for petroleum and natural gas long-distance conveying pipeline | |
| JP2000254777A (en) | Tube welding method and repair method for existing tube joint part | |
| US4211260A (en) | Multilayer vessel or tube construction | |
| JP2981402B2 (en) | Repair method of reflux pipe of vacuum degassing equipment | |
| JPH07119885A (en) | Repairing method of container penetrating piping | |
| KR100513898B1 (en) | The method of stop a leak of welding line for chemistry fluid tank made of high quality | |
| JPS6410713B2 (en) | ||
| JPS62238073A (en) | Welding method for pipe or the like | |
| JPH0531322Y2 (en) | ||
| JPS6376994A (en) | Internal amendment method for metal pressure container |