JPH11138259A - Underwater welding equipment - Google Patents
Underwater welding equipmentInfo
- Publication number
- JPH11138259A JPH11138259A JP9305534A JP30553497A JPH11138259A JP H11138259 A JPH11138259 A JP H11138259A JP 9305534 A JP9305534 A JP 9305534A JP 30553497 A JP30553497 A JP 30553497A JP H11138259 A JPH11138259 A JP H11138259A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- underwater
- box
- local dry
- wall surface
- 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
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
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中溶接装置に関
し、特に水中既設部材に新規取り付け部材を溶接する水
中溶接装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater welding apparatus, and more particularly to an underwater welding apparatus for welding a newly installed member to an existing member underwater.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】水中に
設けてある構造物に新たな部材を取り付けたり、或いは
旧部材を取り外して新しい部材に交換したりする場合が
ある。例えば、原子力プラントの使用済燃料貯蔵ピット
は、原子炉で所定の燃焼を終えた燃料集合体所謂使用済
燃料を移送に便な状態になるまで冷却貯蔵する施設であ
るが、ここでは使用済燃料を受け入れて支持する使用済
燃料貯蔵ラックが遮蔽・冷却水中に没して設けられてい
る。このような使用済燃料貯蔵ラックを改修、改造する
場合、溶接作業を含む工事の作業性を考慮すると、冷却
水を全部排出して行うのが好都合ではあるが、反面、既
に貯蔵中の大量の使用済燃料を取り出して別の施設に保
管するのは、その設備を別に準備する必要があり、膨大
なコストを要するばかりで無く、空間的な制約もある。
従って、水を排除することなく既設水中構造物に溶接作
業を行うことができる水中溶接装置が求められている。
更に、水中溶接作業において、その水の水質に悪影響を
与えないことも求められている。従って、本発明の課題
は、水中で既設構造物に対する溶接作業を行うことがで
き、更に周囲の水に悪影響を与えることのない水中溶接
装置を提供することである。2. Description of the Related Art In some cases, a new member is attached to a structure provided in water, or an old member is removed and replaced with a new member. For example, a spent fuel storage pit of a nuclear power plant is a facility that cools and stores a fuel assembly, a so-called spent fuel, which has completed a predetermined combustion in a nuclear reactor until it becomes convenient for transfer. A spent fuel storage rack that receives and supports the submersion is submerged in the shielding / cooling water. When repairing or remodeling such a spent fuel storage rack, it is convenient to discharge all cooling water in consideration of the workability of construction including welding work, but on the other hand, a large amount of already stored Taking out the spent fuel and storing it in another facility requires extra preparation of the equipment, which not only requires enormous costs, but also has spatial limitations.
Therefore, there is a need for an underwater welding apparatus that can perform a welding operation on an existing underwater structure without removing water.
Further, it is required that the quality of the water is not adversely affected in the underwater welding operation. Therefore, an object of the present invention is to provide an underwater welding apparatus that can perform a welding operation on an existing structure underwater and that does not adversely affect surrounding water.
【０００３】[0003]
【課題を解決するための手段】如上の課題を解決するた
め、本発明によれば、水中溶接装置は、被溶接部材に対
向する開口を備えたボックス装置、このボックス装置内
に設けられ取り付け部材を支持する掴持装置、前記ボッ
クス装置内に設けられ前記取り付け部材を前記被溶接部
材に溶接するＴＩＧ溶接装置及び前記ボックス装置に設
けられた排水装置を有して構成される。好適には、前記
ＴＩＧ溶接装置の溶接部を照明する水中照明装置と溶接
アークをモニターするモニター装置とがボックス装置に
備えつけられる。According to the present invention, there is provided a submersible welding apparatus comprising: a box device having an opening facing a member to be welded; and a mounting member provided in the box device. , A TIG welding device provided in the box device for welding the mounting member to the member to be welded, and a drain device provided in the box device. Preferably, a box device is provided with an underwater lighting device for illuminating a welded portion of the TIG welding device and a monitor device for monitoring a welding arc.
【０００４】[0004]
【発明の実施の形態】以下、添付の図面を参照して本発
明の実施形態を説明する。図１乃至図３を参照するに、
貯蔵ピットの壁はコンクリート構造物１で構成されてい
て、その壁面３はライニング等で構成され、水中既設構
造物である旧支持材５が設けられている。本発明による
水中溶接装置１０は、その旧支持材５に新支持材７を溶
接するものである。水中溶接装置１０のボツクス装置２
０は、箱形の局部乾式ボックス２１及びその側部に設け
られた固定用の吸盤２３と作動シリンダ２５を有する。
そして、局部乾式ボックス２１の一面が壁面３に対向し
て開口していて、その周りに単泡スポンジからなるシー
ル２７が貼着されている。溶接するに際し、吸盤２３を
壁面３に押し付けて更に作動シリンダ２５を作動させれ
ば、局部乾式ボックス２１が壁面３に押し付けられてシ
ール２７が変形し、シールが確立される。このようなボ
ツクス装置２０は、マニピュレータ２８に支持枠２９を
介して保持される。Embodiments of the present invention will be described below with reference to the accompanying drawings. Referring to FIGS. 1 to 3,
The wall of the storage pit is made of a concrete structure 1, the wall surface 3 of which is made of a lining or the like, and an old support member 5, which is an existing underwater structure, is provided. The underwater welding apparatus 10 according to the present invention is for welding the new support member 7 to the old support member 5. Box apparatus 2 of underwater welding apparatus 10
Numeral 0 has a box-shaped local dry box 21 and a suction cup 23 and a working cylinder 25 for fixing provided on the side thereof.
One surface of the local dry box 21 is open to face the wall surface 3, and a seal 27 made of a single-cell sponge is adhered to the periphery. During welding, if the suction cup 23 is pressed against the wall surface 3 and the operating cylinder 25 is further operated, the local dry box 21 is pressed against the wall surface 3 and the seal 27 is deformed to establish the seal. Such a box device 20 is held by a manipulator 28 via a support frame 29.
【０００５】新支持材７を掴持して壁面３に押し付ける
ための掴持装置３０が局部乾式ボックス２１の中に設け
られている。掴持装置３０は、ベース３１，新支持材７
を固定するクランプシリンダを備えたクランプ機構３３
及びクランプ機構３３を壁面３に押し付ける押し付けシ
リンダ３５を有する。A holding device 30 for holding the new support member 7 and pressing it against the wall surface 3 is provided in the local dry box 21. The holding device 30 includes a base 31 and a new support member 7.
Mechanism 33 equipped with a clamp cylinder for fixing
And a pressing cylinder 35 for pressing the clamp mechanism 33 against the wall surface 3.
【０００６】そして特に図３に明示されるように、局部
乾式ボックス２１の天井面及び底面には、ＴＩＧ溶接装
置４０がそれぞれ設けられている。ＴＩＧ溶接装置４０
が合計２基設けられているのは、新支持材７の上下両縁
を同時に溶接するためで、片面溶接を行うのであれば１
基で良い。構造は対称的であるから、一方についてのみ
説明する。即ち、ＴＩＧ溶接装置４０は、溶接トーチ４
１を局部乾式ボックス２１の長手方向（溶接線に沿う方
向）に動かすための走行装置４３，溶接トーチ４１を溶
接開先の幅方向に動かす電動スライド４５，溶接トーチ
４１を溶接開先に対し上下方向に動かすための電動スラ
イド４７及び溶接ワイヤ位置調節機構４９を有する。走
行装置４３は溶接ワイヤ送給機構５１を搭載し、ここか
ら溶接トーチ４１の近傍まで溶接ワイヤ用ガイドノズル
５３が延びていて、溶接部に送給される溶接ワイヤを案
内する。その溶接ワイヤ送給機構５１は、小径のワイヤ
リール、送給モータ、ローラ等を内蔵している。又、図
示はされていないが、電動スライド４５の先端には壁面
３検知用センサが設けられ、溶接トーチ４１が壁面３に
衝突するのを防止し、更に取り付けられたアークモニタ
ー５５が溶接トーチ４１によるアークの状況を監視でき
るようになっている。そのアークモニター５５はプリズ
ムや小型ＣＣＤカメラを備えて、図示しない制御盤にあ
るモニター画面へ映像を送る。[0006] As specifically shown in FIG. 3, a TIG welding device 40 is provided on each of the ceiling surface and the bottom surface of the local dry box 21. TIG welding equipment 40
Is provided in order to weld both the upper and lower edges of the new support member 7 at the same time.
Base is good. Since the structure is symmetric, only one will be described. That is, the TIG welding device 40 includes the welding torch 4
1 for moving the welding torch 1 in the longitudinal direction of the local dry box 21 (along the welding line), an electric slide 45 for moving the welding torch 41 in the width direction of the welding groove, and moving the welding torch 41 up and down with respect to the welding groove. It has an electric slide 47 and a welding wire position adjusting mechanism 49 for moving in the direction. The traveling device 43 has a welding wire feeding mechanism 51 mounted thereon, and a welding nozzle guide nozzle 53 extends from the welding wire feeding mechanism 51 to the vicinity of the welding torch 41 to guide the welding wire fed to the welding portion. The welding wire feeding mechanism 51 includes a small-diameter wire reel, a feeding motor, a roller, and the like. Although not shown, a sensor for detecting the wall surface 3 is provided at the tip of the electric slide 45 to prevent the welding torch 41 from colliding with the wall surface 3, and the attached arc monitor 55 is connected to the welding torch 41. To monitor the arc condition. The arc monitor 55 includes a prism and a small CCD camera, and sends an image to a monitor screen on a control panel (not shown).
【０００７】再び、図１及び図２を参照するに、局部乾
式ボックス２１の側面には、水中照明２８が溶接部を照
らすように設けられ、更にその内部底面に開口した水給
排ノズル２９が局部乾式ボックス２１の中に延び、これ
は水面上の大気空間まで延びている。この水給排ノズル
２９は、水中溶接装置１０をセットした後、局部乾式ボ
ックス２１から水を抜いて内部を大気空間と同じ雰囲気
にし、溶接作業終了後、再び水を局部乾式ボックス２１
に戻して、装置の取り外しを容易に行うものである。更
に局部乾式ボックス２１からは、案内ホース２２が図示
しない制御盤へ延びて、溶接用電源線、シールドガス送
給ホース、映像信号線などを導いている。Referring again to FIGS. 1 and 2, an underwater light 28 is provided on the side surface of the local dry box 21 so as to illuminate the welded portion, and a water supply / drain nozzle 29 opened on the inner bottom surface thereof. It extends into a local dry box 21 which extends to atmospheric space above the water surface. After the underwater welding device 10 is set, the water supply / drain nozzle 29 drains water from the local dry box 21 to make the inside the same atmosphere as the atmospheric space, and after the welding operation is completed, water is again supplied to the local dry box 21.
To facilitate removal of the device. Further, a guide hose 22 extends from the local dry box 21 to a control panel (not shown), and leads a welding power supply line, a shield gas supply hose, a video signal line, and the like.
【０００８】次に図４乃至図７を参照して、以上の構成
の水中溶接装置１０を用いて新支持材７を壁面３へ溶接
するための手順を説明する。先ず、図４に示すように、
掴持装置３０に新部材７を掴持し、ボックス装置２０を
マニピュレータ２８で保持して壁面３に対向させる。次
いで、掴持装置３０を作動して図５に示すように、新部
材７を壁面３に押し当てる。この状況を水中照明２８で
映し出し、溶接開先位置が正しいか等を確認し、悪けれ
ば位置を調整する。次に図６に示すように作動シリンダ
２５により吸盤２３を壁面３に押し付け、更にシリンダ
２５を短縮してシール２７を壁面３に押し付ける。しか
る後、水給排ノズル２９により局部乾式ボックス２１の
中の水を排出し、内部を溶接可能雰囲気とする。しかる
後、図７に示すように、電動スライド４５を作動させ、
溶接トーチ４１を新支持材７の溶接開先部に位置決め
し、ＴＩＧ溶接を行う。溶接は通常のやり方であり、説
明は省略するが、アークモニター５５によりその状況を
監視し、適切な溶接を行う。Next, a procedure for welding the new support member 7 to the wall surface 3 using the underwater welding apparatus 10 having the above configuration will be described with reference to FIGS. First, as shown in FIG.
The new member 7 is gripped by the gripping device 30, and the box device 20 is held by the manipulator 28 so as to face the wall surface 3. Next, the new member 7 is pressed against the wall 3 as shown in FIG. This situation is reflected by the underwater lighting 28, and it is checked whether the welding groove position is correct. If not, the position is adjusted. Next, as shown in FIG. 6, the suction cup 23 is pressed against the wall surface 3 by the working cylinder 25, and the cylinder 25 is further shortened to press the seal 27 against the wall surface 3. Thereafter, the water in the local dry box 21 is discharged by the water supply / discharge nozzle 29, and the inside is set to a weldable atmosphere. Thereafter, as shown in FIG. 7, the electric slide 45 is operated,
The welding torch 41 is positioned at the welding groove of the new support member 7, and TIG welding is performed. The welding is performed in a usual manner, and the description is omitted. The condition is monitored by the arc monitor 55, and appropriate welding is performed.
【０００９】[0009]
【発明の効果】以上説明したように、本発明によれば、
ボックス装置により溶接部を周囲の水空間から隔離して
乾燥状態とし、遠隔的にＴＩＧ溶接を行うので、水中の
既設構造物への溶接を全体の水を排除せずに行うことが
できる。As described above, according to the present invention,
The box device isolates the weld from the surrounding water space, keeps it dry, and remotely performs TIG welding, so that welding to existing structures underwater can be performed without removing the entire water.
【図１】本発明による水中溶接装置の一部切欠斜視図で
ある。FIG. 1 is a partially cutaway perspective view of an underwater welding apparatus according to the present invention.
【図２】前記水中溶接装置の内部を開口部から見た正面
図である。FIG. 2 is a front view of the inside of the underwater welding apparatus as viewed from an opening.
【図３】前記水中溶接装置の立断面図である。FIG. 3 is a vertical sectional view of the underwater welding apparatus.
【図４】前記溶接装置の作用説明図である。FIG. 4 is a diagram illustrating the operation of the welding device.
【図５】前記溶接装置の作用説明図である。FIG. 5 is an explanatory diagram of an operation of the welding device.
【図６】前記溶接装置の作用説明図である。FIG. 6 is a diagram illustrating the operation of the welding device.
【図７】前記溶接装置の作用説明図である。FIG. 7 is an operation explanatory view of the welding device.
３ 壁面 ７ 新支持材 １０ 水中溶接装置 ２０ ボックス装置 ２１ 局部乾式ボックス ２２ 案内ホース ２３ 吸盤 ２５ 作動シリンダ ２７ シール ２８ 水中照明 ２９ 水給排ノズル ３０ 掴持装置 ３１ ベース ３３ クランプ機構 ３５ 押し付けシリンダ ４０ ＴＩＧ溶接装置 ４１ 溶接トーチ ４３ 走行装置 ４５ 電動スライド ４７ 電動スライド ４９ ワイヤ位置調整機構 ５１ 溶接ワイヤ送給機構 ５３ ガイドノズル ５５ アークモニター 3 Wall 7 New support material 10 Underwater welding device 20 Box device 21 Local dry box 22 Guide hose 23 Suction cup 25 Working cylinder 27 Seal 28 Underwater lighting 29 Water supply / drain nozzle 30 Gripping device 31 Base 33 Clamp mechanism 35 Pressing cylinder 40 TIG welding Apparatus 41 Welding torch 43 Traveling device 45 Electric slide 47 Electric slide 49 Wire position adjusting mechanism 51 Welding wire feeding mechanism 53 Guide nozzle 55 Arc monitor
フロントページの続き (72)発明者 寺田 昭 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内 (72)発明者 田中 寛 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内Continuation of the front page (72) Inventor Akira Terada 1-1-1, Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. No. 1-1, Mitsubishi Heavy Industries, Ltd., Kobe Shipyard
Claims (2)
クス装置、同ボックス装置内に設けられ取り付け部材を
支持する掴持装置、前記ボックス装置内に設けられ前記
取り付け部材を前記被溶接部材に溶接するＴＩＧ溶接装
置及び前記ボックス装置に設けられた排水装置を有して
なる水中溶接装置。1. A box device having an opening facing a member to be welded, a gripping device provided in the box device to support a mounting member, and the mounting member provided in the box device being attached to the member to be welded. An underwater welding device comprising a TIG welding device for welding and a drainage device provided in the box device.
水中照明装置と溶接アークをモニターするモニター装置
を更に備えている請求項１記載の水中溶接装置。2. The underwater welding device according to claim 1, further comprising an underwater lighting device for illuminating a welded portion of the TIG welding device and a monitor device for monitoring a welding arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30553497A JP3637189B2 (en) | 1997-11-07 | 1997-11-07 | Underwater welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30553497A JP3637189B2 (en) | 1997-11-07 | 1997-11-07 | Underwater welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11138259A true JPH11138259A (en) | 1999-05-25 |
| JP3637189B2 JP3637189B2 (en) | 2005-04-13 |
Family
ID=17946320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30553497A Expired - Lifetime JP3637189B2 (en) | 1997-11-07 | 1997-11-07 | Underwater welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3637189B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007147397A (en) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | Method for operating reactor, and instrument and method for surveying the same |
| JP2008008693A (en) * | 2006-06-28 | 2008-01-17 | Hitachi Ltd | Underwater moving apparatus |
| CN100436034C (en) * | 2006-04-10 | 2008-11-26 | 中国海洋石油总公司 | Welder support gear of high pressure dry welding experimental cabin |
| CN100464934C (en) * | 2006-04-10 | 2009-03-04 | 中国海洋石油总公司 | Welder support of high pressure dry welding experimental cabin |
| FR2928852A1 (en) * | 2008-03-20 | 2009-09-25 | Comex Nucleaire Sa | DEVICE AND METHOD FOR TIG WELDING WITH DOUBLE ELECTRODE |
| CN103480940A (en) * | 2013-09-05 | 2014-01-01 | 国核电站运行服务技术有限公司 | Automatic underwater welding maintenance equipment |
| CN103706924A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Diving wire feeder of intelligent arc welding robot |
| CN103706927A (en) * | 2013-12-19 | 2014-04-09 | 华南理工大学 | Multifunctional welding system of underwater welding robot |
| CN104942487A (en) * | 2015-07-02 | 2015-09-30 | 哈尔滨工业大学（威海） | Underwater local dry-method welding device and method of titanium alloy and other materials |
| WO2017073924A1 (en) * | 2015-10-30 | 2017-05-04 | 주식회사 타스글로벌 | System and method for determining location of underwater working apparatus using welding line of underwater structure |
| JP2017142170A (en) * | 2016-02-10 | 2017-08-17 | 三菱重工業株式会社 | Working space formation device of used fuel pit and working space formation method of used fuel pit |
| CN112318006A (en) * | 2020-11-04 | 2021-02-05 | 王学金 | Dry welding and clamping equipment for underwater welding |
| CN113618195A (en) * | 2021-07-29 | 2021-11-09 | 华南理工大学 | Underwater all-position local dry pulse MIG welding system and welding method |
| CN113977036A (en) * | 2021-11-19 | 2022-01-28 | 中国人民解放军海军潜艇学院 | Underwater wet welding power supply without power supply grounding cable and welding control method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179599B (en) * | 2011-04-01 | 2013-04-17 | 清华大学 | Underwater welding local mask with welding line tracking function |
| CN104722976B (en) * | 2015-03-18 | 2016-08-17 | 哈尔滨工业大学（威海） | A kind of Underwater Welding training set and using method thereof |
-
1997
- 1997-11-07 JP JP30553497A patent/JP3637189B2/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007147397A (en) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | Method for operating reactor, and instrument and method for surveying the same |
| CN100436034C (en) * | 2006-04-10 | 2008-11-26 | 中国海洋石油总公司 | Welder support gear of high pressure dry welding experimental cabin |
| CN100464934C (en) * | 2006-04-10 | 2009-03-04 | 中国海洋石油总公司 | Welder support of high pressure dry welding experimental cabin |
| JP2008008693A (en) * | 2006-06-28 | 2008-01-17 | Hitachi Ltd | Underwater moving apparatus |
| FR2928852A1 (en) * | 2008-03-20 | 2009-09-25 | Comex Nucleaire Sa | DEVICE AND METHOD FOR TIG WELDING WITH DOUBLE ELECTRODE |
| CN103480940A (en) * | 2013-09-05 | 2014-01-01 | 国核电站运行服务技术有限公司 | Automatic underwater welding maintenance equipment |
| CN103706927A (en) * | 2013-12-19 | 2014-04-09 | 华南理工大学 | Multifunctional welding system of underwater welding robot |
| CN103706924A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Diving wire feeder of intelligent arc welding robot |
| CN104942487A (en) * | 2015-07-02 | 2015-09-30 | 哈尔滨工业大学（威海） | Underwater local dry-method welding device and method of titanium alloy and other materials |
| WO2017073924A1 (en) * | 2015-10-30 | 2017-05-04 | 주식회사 타스글로벌 | System and method for determining location of underwater working apparatus using welding line of underwater structure |
| JP2017142170A (en) * | 2016-02-10 | 2017-08-17 | 三菱重工業株式会社 | Working space formation device of used fuel pit and working space formation method of used fuel pit |
| CN112318006A (en) * | 2020-11-04 | 2021-02-05 | 王学金 | Dry welding and clamping equipment for underwater welding |
| CN113618195A (en) * | 2021-07-29 | 2021-11-09 | 华南理工大学 | Underwater all-position local dry pulse MIG welding system and welding method |
| CN113618195B (en) * | 2021-07-29 | 2022-06-14 | 华南理工大学 | Underwater all-position local dry pulse MIG welding method |
| CN113977036A (en) * | 2021-11-19 | 2022-01-28 | 中国人民解放军海军潜艇学院 | Underwater wet welding power supply without power supply grounding cable and welding control method |
| CN113977036B (en) * | 2021-11-19 | 2023-03-07 | 中国人民解放军海军潜艇学院 | Underwater wet welding power supply without power supply grounding cable and welding control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3637189B2 (en) | 2005-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH11138259A (en) | Underwater welding equipment | |
| NO327112B1 (en) | Procedure and arrangement for welding | |
| JP2002168992A (en) | Method for repair of inside reactor pressure vessel, and repairing device | |
| CN112453710A (en) | Welding method for automatically cleaning weld joints before and after welding | |
| JP2007038829A (en) | Structure of cab for construction machine | |
| CN117047272A (en) | Underwater wall surface laser welding repair drainage device and welding method | |
| JP6436304B2 (en) | In-furnace debris collection method and collection device | |
| CN218396799U (en) | Circular seam welding positioning tool | |
| JP3918217B2 (en) | Repair method for inner surface of container nozzle | |
| JP2896524B2 (en) | Tungsten electrode automatic changer | |
| JP4945389B2 (en) | Underwater repair system and underwater repair method using the same | |
| JPH07132372A (en) | Underwater machining device | |
| KR20080068957A (en) | Hybrid laser welding device of the plate joining | |
| JP3851683B2 (en) | In-reactor inspection device | |
| JP3621865B2 (en) | Underwater welding equipment | |
| CN210587598U (en) | Stud welding gun nail cleaning device and system | |
| KR102121459B1 (en) | Transfer jig for wire supply apparatus and automatic welding apparatus having the same | |
| JPH06138281A (en) | Device for inspecting and repairing inside of remote reactor | |
| KR200438999Y1 (en) | Robot and auto carriage | |
| JPH08224666A (en) | Narrow groove tig welding equipment | |
| JP2578966Y2 (en) | Automatic welding equipment for double in-cylinder fins | |
| JP2695945B2 (en) | Underwater welding equipment | |
| JPH1194977A (en) | Housing inspection device of reactor control rod driving device | |
| JP5538921B2 (en) | Underwater welding equipment | |
| JPS60106680A (en) | Electron beam welding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040316 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040517 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20041214 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050107 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080114 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090114 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100114 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110114 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110114 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120114 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130114 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140114 Year of fee payment: 9 |
|
| EXPY | Cancellation because of completion of term |