JP2904890B2 - Pipeline repair method and apparatus - Google Patents
Pipeline repair method and apparatusInfo
- Publication number
- JP2904890B2 JP2904890B2 JP2220046A JP22004690A JP2904890B2 JP 2904890 B2 JP2904890 B2 JP 2904890B2 JP 2220046 A JP2220046 A JP 2220046A JP 22004690 A JP22004690 A JP 22004690A JP 2904890 B2 JP2904890 B2 JP 2904890B2
- Authority
- JP
- Japan
- Prior art keywords
- pipeline
- shell
- inner peripheral
- peripheral surface
- pressurized
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Arc Welding In General (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、例えば海底に敷設された例えば原油をタン
カーから備蓄基地に荷下ろしするパイプラインの補修方
法及びその装置に関する。The present invention relates to a method and an apparatus for repairing a pipeline for unloading, for example, crude oil laid on the sea floor from a tanker to a storage base, for example.
［従来の技術］ かかるパイプラインの内周面の補修に際し、ライン内
の原油を抜き取ると、パイプラインが浮き上がり、また
水圧によりパイプラインがつぶれるおそれがある。これ
に対し、比較的大径のパイプラインにおいては、内周壁
を支持枠で補強し、また、パイプライン上にウエイトを
載置したりしている。[Prior Art] When repairing the inner peripheral surface of such a pipeline, if the crude oil in the line is extracted, the pipeline may be lifted, and the pipeline may be broken by water pressure. On the other hand, in a relatively large-diameter pipeline, the inner peripheral wall is reinforced by a support frame, and a weight is placed on the pipeline.
しかし、比較的小径のパイプラインにおいて、浮き上
がるおそれがないものにおいては、内部を与圧（例えば
2kg/cm2）してつぶれるのを防止している例がある。However, in a relatively small-diameter pipeline, if there is no possibility of floating, the inside of the pipeline is pressurized (for example,
2kg / cm 2 ) There is an example that prevents crushing.
しかし、与圧下で補修の溶接作業を行うのは、法規上
禁止されており、また、ヒュームが内部の空気を汚染す
る。However, repair work under pressure is prohibited by law and fumes contaminate the air inside.
そこで、補修部分をケーシング等で覆って外気を遮断
し、その外部から操作具を操作してのぞき窓から監視し
ながら補修溶接を行う技術が実開平２−11300号公報に
開示されている。しかし、この技術は大気圧下でタンク
内面に吸盤で吸着した支持部材でケーシングを支持し、
ケーシング内に不活性ガスを供給して溶接トーチを用い
て補修溶接を行うもので、与圧パイプラインの補修を行
うものではない。Accordingly, Japanese Unexamined Utility Model Publication No. 2-11300 discloses a technique in which the repaired portion is covered with a casing or the like to shut off outside air, and the repairing welding is performed while operating the operating tool from the outside and monitoring the view through a viewing window. However, in this technology, the casing is supported by a support member adsorbed by a suction cup on the inner surface of the tank under atmospheric pressure,
The repair gas welding is performed by supplying an inert gas into the casing and using a welding torch, but not the repair of the pressurized pipeline.
［発明が解決しようとする課題］ したがって、本発明は、与圧されたパイプラインの内
部から補修溶接を行うことができるパイプラインの補修
方法及びその装置を提供することを目的としている。[Problems to be Solved by the Invention] Accordingly, an object of the present invention is to provide a pipeline repair method and apparatus capable of performing repair welding from inside a pressurized pipeline.
［課題を解決するための手段］ 本発明のパイプラインの補修方法によれば、内部を与
圧したパイプラインの補修方法において、のぞき窓と外
部から操作可能な操作腕とを備え周縁部が内周面に沿う
よう円弧状に形成されたシェルをパイプライン内周面の
補修箇所に当接し、コンプレッサを作動して外気取入弁
を介し該シェル内を大気圧に減圧してシェルをパイプラ
イン内周面に与圧力で圧着し、前記のぞき窓から内部を
のぞきながら前記操作腕を操作して補修溶接を行い、シ
ェル内空気をコンプレッサでヒュームごと吸引してダス
トフィルタで集塵しパイプライン内に排出する。[Means for Solving the Problems] According to the method for repairing a pipeline of the present invention, in the method for repairing a pipeline whose inside is pressurized, a viewing window and an operation arm that can be operated from the outside are provided, and a peripheral edge portion has The shell formed in an arc shape along the peripheral surface is brought into contact with a repaired portion on the inner peripheral surface of the pipeline, and the compressor is operated to depressurize the inside of the shell to the atmospheric pressure via an outside air intake valve, and the shell is pipelined. The inner peripheral surface is pressurized and pressurized, and repair welding is performed by operating the operation arm while looking into the inside from the view window, and the air in the shell is sucked together with fumes by a compressor and collected by a dust filter to collect dust in the pipeline. To be discharged.
また、本発明のパイプラインの補修装置によれば、内
部を与圧したパイプラインの補修装置において、該パイ
プラインの内周面に沿うよう円弧状に周縁部が形成され
たシェルと、該シェルをパイプラインの内周面の任意の
位置に移動自在に支持する支持具とを備え、前記シェル
にはパイプライン内の与圧気を大気圧に減圧してシェル
内に取入れる外気取入弁と、ダストフィルタを介してコ
ンプレッサに接続されている排気吸引マウスと、のぞき
窓と、外部から操作可能な操作腕とが設けられている。Further, according to the pipeline repair device of the present invention, in a pipeline repair device having a pressurized inside, a shell having an arc-shaped peripheral portion formed along an inner peripheral surface of the pipeline; And a support for movably supporting the pipeline at an arbitrary position on the inner peripheral surface of the pipeline.The shell has an external air intake valve for reducing the pressurized air in the pipeline to the atmospheric pressure and taking it into the shell. An exhaust suction mouse connected to the compressor via a dust filter, a viewing window, and an externally operable operating arm are provided.
［作用］ 本発明においては、溶接に際し、シェル内の空気を排
気してパイプラインの内周壁に圧着し、ヒュームごと排
気しながら減圧弁を介して大気圧に減圧した空気をシェ
ル内に導入することにより法規に適合した溶接作業を行
うことができる。[Operation] In the present invention, during welding, air in the shell is exhausted and pressed against the inner peripheral wall of the pipeline, and air depressurized to atmospheric pressure is introduced into the shell through a pressure reducing valve while exhausting fumes. Thereby, welding work conforming to the regulations can be performed.
また、シェルから排出された空気は、ヒュームをダス
トフィルタで集塵したのちパイプライン内に排出し、パ
イプライン内の空気の汚染を防止する。Further, the air discharged from the shell collects fumes with a dust filter and then discharges the fumes into the pipeline to prevent contamination of the air in the pipeline.
［実施例］ 以下図面を参照して本発明の実施例を説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図には、本発明が実施されるパイプライン及び本
発明を実施する装置の概略が示されている。FIG. 1 schematically shows a pipeline in which the present invention is implemented and an apparatus for practicing the present invention.
パイプライン１の一方の立ち上がり部1aの地上側に
は、マテリアルロック２とマンロック３とが設けられて
いる。また、マンロック３の付近には、ホスピタルロッ
ク４が設けられている。A material lock 2 and a man lock 3 are provided on the ground side of one rising portion 1a of the pipeline 1. A hospital lock 4 is provided near the man lock 3.
更に、全体を符号５で示す送気装置が設けられ、この
装置５には、コンプレッサ６、吸気調圧装置７及び排気
調圧装置８が設けられている。Further, an air supply device generally indicated by reference numeral 5 is provided, and this device 5 is provided with a compressor 6, an intake pressure regulator 7 and an exhaust pressure regulator 8.
パイプライン１の他方の立ち上げ部1bの地上側には、
同様なマテリアルロック２及びマンロック３と、全体を
符号９で示す排気設備が設けられている。そして、パイ
プライン１の立ち上げ部1a側から矢印Ａのように送気
し、立ち上げ部1b側から矢印Ｂのように排気し、パイプ
ライン１内を例えば2kg/cm2に与圧するようになってい
る。On the ground side of the other startup section 1b of the pipeline 1,
A similar material lock 2 and a man lock 3 and an exhaust system generally indicated by reference numeral 9 are provided. Then, air is supplied from the rising portion 1a side of the pipeline 1 as indicated by an arrow A, exhausted from the rising portion 1b side as indicated by an arrow B, and the inside of the pipeline 1 is pressurized to, for example, 2 kg / cm 2. Has become.
また、パイプライン１の内周壁には、上部に沿って補
修用の高圧電源ケーブル10が張設され、固定トランス11
が接続されている。また、内周壁の下部に沿って低圧電
源ケーブル12が設けられ、電気溶接器13、13及びコンプ
レッサ14が接続されている。なお、図中の符号15は人材
運搬車、16はダストフィルタ、20は本発明を実施する補
修溶接装置である。On the inner peripheral wall of the pipeline 1, a high-voltage power supply cable 10 for repair is stretched along the upper part, and a fixed transformer 11 is provided.
Is connected. A low-voltage power cable 12 is provided along a lower portion of the inner peripheral wall, and electric welders 13 and 13 and a compressor 14 are connected. Note that reference numeral 15 in the figure denotes a personnel carrier, 16 denotes a dust filter, and 20 denotes a repair welding device for implementing the present invention.
第２図及び第３図において、補修溶接装置20には、図
示しない走行台車に旋回および移動可能に設けられた支
持具21と、その支持具21によりパイプライン１の内周面
の任意の位置に移動自在な半球殻状の限定大気圧用シェ
ル22とから概略構成されている。2 and 3, the repair welding device 20 includes a support 21 provided on a traveling vehicle (not shown) so as to be pivotable and movable, and an arbitrary position on the inner peripheral surface of the pipeline 1 by the support 21. And a semi-spherical shell 22 for a limited atmospheric pressure that is freely movable.
そのシェル22の周縁部は、パイプライン１の内周面に
沿うように側面から見て円弧状に形成され、その周縁部
には、Ｏリング状のシールリング23が設けられている。
このシェル22には、減圧弁を備えた外気取入弁24と、排
気吸引マウス25とが設けられ、そのマウス25は排気チュ
ーブ26によりダストフィルタ16を介してコンプレッサ14
に接続されている。The peripheral portion of the shell 22 is formed in an arc shape as viewed from the side so as to be along the inner peripheral surface of the pipeline 1, and an O-ring-shaped seal ring 23 is provided at the peripheral portion.
The shell 22 is provided with an outside air intake valve 24 provided with a pressure reducing valve, and an exhaust suction mouse 25. The mouse 25 is connected to the compressor
It is connected to the.
また、シェル22の頂部には、のぞき窓27が設けられ、
そののぞき窓27の両側には、操作腕29用の一対の挿入口
28、28が設けられている。そして、それぞれの挿入口28
には、作業員が腕を挿入して溶接ホルダ30を把持する操
作腕29が連結されている。A viewing window 27 is provided at the top of the shell 22,
On both sides of the viewing window 27, a pair of insertion holes for the operation arm 29 are provided.
28, 28 are provided. And each insertion opening 28
Is connected to an operating arm 29 into which a worker inserts an arm to hold the welding holder 30.
補修に際し、作業員M1は、補修箇所の前処理作業を行
う。At the time of repair, the worker M1 performs pre-processing work on the repaired part.
次いで、作業員M2は、補修溶接装置20をパイプライン
１の内周壁に当接させ、コンプレッサ14を作動し、シェ
ル22内の空気を排気して補修溶接装置20を内周壁に圧着
させる。Next, the worker M2 brings the repair welding device 20 into contact with the inner peripheral wall of the pipeline 1, activates the compressor 14, exhausts the air in the shell 22, and presses the repair welding device 20 against the inner peripheral wall.
そこで、挿入口28、28から操作腕29、29に両腕を挿入
して溶接ホルダ30を把持し、のぞき窓27から内部をのぞ
いて補修箇所を溶接補修する。そして、シェル22内の圧
気を大気圧に保つようにコンプレッサ14でヒュームごと
に排気しながらパイプライン１内の与圧空気を外気取入
弁24を介し減圧してシェル22内に吸引し、したがって、
シェル22内の空気を浄化しながら溶接作業を行う。コン
プレッサ14により吸引された排気は、ダストフィルタ16
でヒュームが集塵されたのち、矢印ｂのようにパイプラ
イン１内に排気される。Then, both arms are inserted into the operating arms 29, 29 from the insertion openings 28, 28, the welding holder 30 is grasped, and the repaired portion is welded and repaired by looking through the viewing window 27 into the inside. Then, the compressed air in the pipeline 1 is depressurized through the outside air intake valve 24 and sucked into the shell 22 while the compressed air in the shell 22 is exhausted for each fume by the compressor 14 so as to maintain the atmospheric pressure. ,
The welding operation is performed while purifying the air in the shell 22. The exhaust air sucked by the compressor 14 is
After the fumes are collected by the exhaust gas, the exhaust gas is exhausted into the pipeline 1 as indicated by an arrow b.
補修溶接が終ったら、コンプレッサ14の作動を停止
し、空気取入弁24を開いてパイプライン１内の空気をシ
ェル20内に取り入れ、シェル20を内周壁から離して次の
補修箇所に移動させる。When the repair welding is completed, the operation of the compressor 14 is stopped, the air intake valve 24 is opened, the air in the pipeline 1 is taken into the shell 20, and the shell 20 is moved away from the inner peripheral wall to the next repair location. .
［発明の効果］ 以上説明したように本発明によれば、下記の効果を奏
する。[Effects of the Invention] As described above, the present invention has the following effects.
（ａ） 与圧されたパイプライン内部から簡単な装置で
法規に適合した大気圧下での補修溶接を行うことができ
る。(A) Repair welding can be performed from the pressurized inside of the pipeline under atmospheric pressure that complies with regulations with a simple device.
（ｂ） 補修溶接装置のシェルは周縁部がパイプライン
内周面に沿う円弧状に形成されており、与圧力と内部の
大気圧との差圧によりパイプライン内任意の位置に圧着
させ作業をすることができる。(B) The shell of the repair welding equipment is formed in a circular arc shape along the inner peripheral surface of the pipeline, and is crimped to an arbitrary position in the pipeline by the pressure difference between the applied pressure and the internal atmospheric pressure. can do.
第１図は本発明が実施されるパイプライン及び本発明を
実施する補修溶接装置の概略を示す斜視図、第２図及び
第３図は補修溶接装置及び該装置による溶接作業の状態
を示す斜視図である。 １……パイプライン、20……補修溶接装置、21……支持
具、22……限定大気圧用シェル、24……外気取入弁、25
……排気吸引マウス、26……排気チューブ、27……のぞ
き窓、29……操作腕FIG. 1 is a perspective view schematically showing a pipeline in which the present invention is implemented and a repair welding apparatus for implementing the present invention, and FIGS. 2 and 3 are perspective views showing a repair welding apparatus and a state of a welding operation by the apparatus. FIG. 1 ... pipeline, 20 ... repair welding equipment, 21 ... support, 22 ... shell for limited atmospheric pressure, 24 ... external air intake valve, 25
…… Exhaust suction mouse, 26 …… Exhaust tube, 27… View port, 29 …… Operation arm
Claims (2)
おいて、のぞき窓（27）と外部から操作可能な操作腕
（29）とを備え周縁部が内周面に沿うよう円弧状に形成
されたシェル（22）をパイプライン（１）内周面の補修
箇所に当接し、コンプレッサ（14）を作動して外気取入
弁（24）を介し該シェル（22）内を大気圧に減圧してシ
ェル（22）をパイプライン内周面に与圧力で圧着し、前
記のぞき窓（27）から内部をのぞきながら前記操作腕
（29）を操作して補修溶接を行い、シェル（22）内空気
をコンプレッサ（14）でヒュームごと吸引してダストフ
ィルタ（16）で集塵しパイプライン（１）内に排出する
ことを特徴とするパイプラインの補修方法。1. A method for repairing a pipeline having a pressurized interior, comprising a viewing window (27) and an operation arm (29) which can be operated from the outside, and a peripheral portion is formed in an arc shape so as to follow an inner peripheral surface. The shell (22) is brought into contact with the repaired portion on the inner peripheral surface of the pipeline (1), and the compressor (14) is operated to reduce the pressure in the shell (22) to atmospheric pressure through the outside air intake valve (24). The shell (22) is pressed against the inner peripheral surface of the pipeline with a pressurized pressure, and repair welding is performed by operating the operating arm (29) while looking through the inside of the viewing window (27) to perform repair welding. Of the fumes with a compressor (14) together with fumes, dust collection with a dust filter (16), and discharge into a pipeline (1).
装置において、該パイプライン（１）の内周面に沿うよ
う円弧状に周縁部が形成されたシェル（22）と、該シェ
ル（22）をパイプライン（１）の内周面の任意の位置に
移動自在に支持する支持具（21）とを備え、前記シェル
（22）にはパイプライン内の与圧気を大気圧に減圧して
シェル内に取入れる外気取入弁（24）と、ダストフィル
タ（16）を介してコンプレッサ（14）に接続されている
排気吸引マウス（25）と、のぞき窓（27）と、外部から
操作可能な操作腕（29）とが設けられていることを特徴
とするパイプラインの補修装置。2. A repairing apparatus for a pipeline (1) having a pressurized inside, wherein a shell (22) having a peripheral edge formed in an arc shape along an inner peripheral surface of the pipeline (1); A support (21) for movably supporting the (22) at an arbitrary position on the inner peripheral surface of the pipeline (1), and the shell (22) is configured to reduce the pressurized air in the pipeline to atmospheric pressure. The outside air intake valve (24) to be taken into the shell by suction, the exhaust suction mouse (25) connected to the compressor (14) via the dust filter (16), and the viewing window (27) An apparatus for repairing a pipeline, comprising an operable operating arm (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220046A JP2904890B2 (en) | 1990-08-23 | 1990-08-23 | Pipeline repair method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220046A JP2904890B2 (en) | 1990-08-23 | 1990-08-23 | Pipeline repair method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04102796A JPH04102796A (en) | 1992-04-03 |
| JP2904890B2 true JP2904890B2 (en) | 1999-06-14 |
Family
ID=16745079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2220046A Expired - Fee Related JP2904890B2 (en) | 1990-08-23 | 1990-08-23 | Pipeline repair method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2904890B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109955008B (en) * | 2017-12-22 | 2024-07-16 | 中核核电运行管理有限公司 | Welding device for repairing valve core sealing surface of nuclear-grade gate valve |
-
1990
- 1990-08-23 JP JP2220046A patent/JP2904890B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04102796A (en) | 1992-04-03 |
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