CN103433606B - The special Mini drain cap of portable underwater local dry cavity automatic welding - Google Patents
The special Mini drain cap of portable underwater local dry cavity automatic welding Download PDFInfo
- Publication number
- CN103433606B CN103433606B CN201310362777.8A CN201310362777A CN103433606B CN 103433606 B CN103433606 B CN 103433606B CN 201310362777 A CN201310362777 A CN 201310362777A CN 103433606 B CN103433606 B CN 103433606B
- Authority
- CN
- China
- Prior art keywords
- welding
- end cover
- lock sleeve
- cover
- felt
- 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
Abstract
The invention provides the special Mini drain cap of a kind of portable underwater local dry cavity automatic welding, the draining cover body of this drainage cover includes upper end cover, plexiglass tent, bottom end cover, be threaded connection supporting rod, air inlet quick connector, lower lock sleeve, calm air chamber, underwater camera assembly are separately fixed at the upper and lower side of upper end cover, and upper end cover, bottom end cover are connected with plexiglass tent by screw thread; The copper welding torch top of welding gun is clamped with welding oscillator; The structure of drainage sealing device is provided with draining felt and felt skirt in bottom end cover periphery, and be fastened on bottom end cover by larynx hoop by draining felt, felt skirt; The copper welding torch of welding gun is fastening by upper lock sleeve, lower lock sleeve, and welding gun is inserted in plexiglass tent, is provided with elastic caoutchouc leather sheath between upper lock sleeve, lower lock sleeve.Effect of the present invention is that structure of the present invention is simple, and exquisite convenient, cost is lower, and drainage effect is remarkable, and welding process is reliable and stable, and the joint formed close to land welding quality improves welding efficiency, is easy to promote.
Description
Technical field
The present invention relates to a kind of underwater welding equipment, the special Mini drain cap of especially a kind of portable underwater local dry cavity automatic welding.
Background technology
Ocean engineering underwater welding technology has become one of requisite key technology in current marine resources development and ocean engineering technology.Ocean engineering structure is at sea during one's term of military service owing to being subject to the effect of external load, damage in various degree and performance loss can be produced, as clashed into defect, corrosion and fatigue crackle etc., cause the decay of ocean engineering drag, these marine structures in-service period is made all to need to carry out incessantly safeguarding, repairing, to ensure that structure can be run safely and reliably.
At present, countries in the world are just of a great variety at the underwater welding method of application and research, and applying more ripe is arc welding.The maximum feature of wet method welding is simple equipments, flexible, low price of constructing, but wet method Underwater Welding still seldom arrives good welding point, therefore can't be used for welding important offshore engineering structure.Dry method welding equipment is complicated, and operating expenses is high, and the cycle is long, and its joint form adapted to is limited.Therefore, find one both simple and flexible, the underwater welding method of quality weld can be obtained again, become the main target of China's Underwater Welding research.
Local dry-type welding is arranged artificially by the water welding partial zones with gas, forms a less gas phase zone, make the welding method of electric arc smooth combustion wherein.Compared with hyperbaric welding, local dry-type is without the need to the draining air chamber of Large expensive, and adaptability obviously increases.Owing to that reducing the adverse effect of water, make quality of weld joint comparatively wet method welding have clear improvement.It combines the advantage of wet type and dry type, has both had the advantage of WET WELDING simple and flexible, and can obtain quality weld as dry type welding again, simultaneously because equipment is simple, cost is lower, is therefore very promising underwater welding method.
As far back as the eighties, the weldering of domestic Kazakhstan just have developed local draining CO under water
2semi-automatic welding, obtains the good weld seam of quality, and has successfully carried out the reparation of offshore engineering structure, and weak point is that welding engineering needs a large amount of CO
2gas, and drainage cover is comparatively large, and inconvenient operation, in addition, drainage cover is connected with diver's helmet, limits the flexibility of diver.Underwater Welding seminar of South China Science & Engineering University successfully develops the flux-cored wire welding equipment of local dry cavity under water and the technique of a set of employing Mini drain cap, but its operation is in blind weldering state substantially, welding arc and Molten Pool Shape cannot be observed, more cannot realize the swing of welding gun, and when welding initial, arc zone has the existence of water, affects welding quality.The partial dry type automatic welding drainage arrangement of Beijing Institute of Petrochemical Technology's invention, adopt Underwater Welding camera and automatic shading electric-welding lens, achieve automatic welding first, welding gun and cover body flexibly connect, cannot realize stably swinging regularly, welding gun structure is too simple, affect welding arc stablility, and the seal that sealing gasket and rubber skirt form is not easy when groove welding or larger fillet welding to realize good drainage effect, cannot ensure the stability of welding process, the consumption of draining gas is still very large.
At present, local dry cavity automatic soldering method still comes with some shortcomings part under water: (1) can not get rid of the impact of welding fume well, reduces camera shooting quality.(2) when carrying out groove welding or larger fillet welding, cannot to ensure that welding region does not have water, affecting welding quality.(3) because cooling velocity is too fast, molten bath is not easily sprawled, and easily causes the defects such as the incomplete fusion between welding bead and mother metal or welding bead.(4) drainage cover is oversize, cannot arrive the REPAIR WELDING region that space is less, and then cannot repair.(5) consumption of draining gas is very large, needs to carry a large amount of gas bombs.
Summary of the invention
For above-mentioned the deficiencies in the prior art part, the invention provides the special Mini drain cap of a kind of portable underwater local dry cavity automatic welding, arrange with the water of gas by welding partial zones, form a less gas phase zone, make electric arc smooth combustion wherein, the joint realizing reliable and stable welding process and formed close to land welding quality.This device uses common land solid core welding wire or flux-cored wire just can carry out Underwater Welding, and in welding process, water surface staff can know and sees arc burning process and Molten Pool Shape.The underwater environments such as this device can be used for the welding of muddy water environment or the lower underwater environment of visibility and adverse circumstances, as comparatively large in water velocity, intense radiation, can carry out the welding such as built-up welding, fillet welding, groove welding.
For achieving the above object, the technical solution used in the present invention is to provide the special Mini drain cap of a kind of portable underwater local dry cavity automatic welding, wherein: this drainage cover includes draining cover body, welding gun, underwater camera assembly, welding oscillator and drainage sealing device;
Described draining cover body includes upper end cover, plexiglass tent, bottom end cover, be threaded connection supporting rod, air inlet quick connector, lower lock sleeve, calm air chamber, underwater camera assembly are separately fixed at the upper and lower side of upper end cover, and upper end cover, bottom end cover are connected with plexiglass tent by screw thread;
Described welding gun includes the copper welding torch, the air nozzle that connect successively, ignition tip; Copper welding torch top is clamped with welding oscillator;
The structure of described drainage sealing device is provided with draining felt in bottom end cover periphery, and have felt skirt at the periphery of draining felt cover, and be fastened on bottom end cover by larynx hoop by draining draining felt, felt skirt; The copper welding torch of welding gun is fastening by upper lock sleeve, lower lock sleeve, and welding gun is inserted in plexiglass tent, is provided with elastic caoutchouc leather sheath between upper lock sleeve, lower lock sleeve.
Effect of the present invention is that structure of the present invention is simple, and exquisite convenient, cost is lower, and drainage effect is remarkable, and welding process is reliable and stable, and the joint formed close to land welding quality improves welding efficiency, is easy to promote.The present invention is clamped by welding oscillator and drives welding torch, realizes welding gun and swings along seam left and right, direction straight line reciprocation type, improve appearance of weld and enhance productivity, preventing the generation of incomplete inter-run fusion.Wherein amplitude of fluctuation (± 8mm), swing speed (0-2300mm/min), swing the left time of staying (0-2s), swing in the middle of the time of staying (0-2s) and swing the right time of staying (0-2s) can set separately.The present invention adopts Underwater Welding camera and automatic photosensitive welding lens, can realize the visual of welding process, weldering before and postwelding without the need to dismantling optical filter; Adopt cold light source to throw light on, adopt laser pen to carry out welding bead centering, ensure the accurate location of welding bead.Air admission hole of the present invention adopts quick connector, ensure that seal and repeatedly plugs flexibility.In drainage cover, adopt laminar flow intake method, scatter with can making draining gas uniform, in cover, sustained height place throughput is equal, by overall for cover maritime interior waters to pressing down and discharging, and can not produce disturbance to electric arc.The present invention, by changing wig-wag to the retaining part of welding torch, realizes the free adjustment of welding gun stem elongation; Can realize that welding is leaned forward, backward welding, meet welding procedure needs.A felt is overlapped outside bottom end cover of the present invention, and overlap a felt skirt again in the outside of felt, with larynx hoop, draining felt, felt group are fixed on bottom end cover again, the air pressure in cover is made to be in dynamic equilibrium state with the hydraulic pressure outside cover, make gas become tiny bubble steadily to escape simultaneously, thus the water reached outside stop cover can not enter in cover, form stable anhydrous domains in drainage cover inside.And felt is high temperature resistant, not easily scaling loss, long service life.Draining cover body of the present invention can cover welding point completely, make itself and water segregation, get rid of water environment to the adverse effect of welding process stability, and reduce Seam and heat effected zone cooling velocity, reduce in tissue the percentage of the martensitic phase that hardens, improve property of welded joint.
Accompanying drawing explanation
Fig. 1 is general structure cross-sectional schematic of the present invention.
In figure;
1. lock sleeve 3. rubber sleave 4. times lock sleeve 5. upper end covers in welding oscillator 2.
6. calm air chamber about 9. weld assembly of supporting rod 7. quick plug 8.
10. lucite cover body 11. copper welding torch 12. air nozzle 13. ignition tip
14. bottom end cover 15. draining felt 16. felt skirt 17. larynx hoops
Detailed description of the invention
By reference to the accompanying drawings and embodiment the special Mini drain cap structure of portable underwater local dry cavity automatic welding of the present invention is illustrated.
The design philosophy of the special Mini drain cap of portable underwater local dry cavity automatic welding of the present invention arranges with the water of gas by welding partial zones, form a less gas phase zone, make electric arc smooth combustion wherein, the joint realizing reliable and stable welding process and formed close to land welding quality.This device uses common land solid core welding wire or flux-cored wire just can carry out Underwater Welding, and in welding process, water surface staff can know and sees arc burning process and Molten Pool Shape.The underwater environments such as this device can be used for the welding of muddy water environment or the lower underwater environment of visibility and adverse circumstances, as comparatively large in water velocity, intense radiation, can carry out the welding such as built-up welding, fillet welding, groove welding.
As shown in Figure 1, the special Mini drain cap structure of portable underwater local dry cavity automatic welding of the present invention is that this drainage cover includes draining cover body, welding gun, underwater camera assembly 9, welding oscillator 1 and drainage sealing device;
Described draining cover body includes upper end cover 5, plexiglass tent 10, bottom end cover 14, be threaded connection supporting rod 6, air inlet quick connector 7, lower lock sleeve 4, calm air chamber 8, underwater camera assembly 9 are separately fixed at the upper and lower side of upper end cover 14, and upper end cover 5, bottom end cover 14 are connected with plexiglass tent 10 by screw thread.
Described welding gun includes the copper welding torch 11, the air nozzle 12 that connect successively, ignition tip 13; Copper welding torch 11 top is clamped with welding oscillator 1.The external control box manipulation of described welding oscillator 1, thus realize multi-form swing.The supporting rod 6 of described draining cover body upper end cover 5 can be connected with welding walking mechanism with welding oscillator 1.
The structure of described drainage sealing device is provided with draining felt 15 in bottom end cover 14 periphery, and have felt skirt 16 at the periphery of draining felt 15 cover, and be fastened on bottom end cover 14 by larynx hoop 17 by draining draining felt 15, felt skirt 16; The copper welding torch 11 of welding gun is fastening by upper lock sleeve 2, lower lock sleeve 4, and welding gun is inserted in plexiglass tent 10, is provided with elastic caoutchouc leather sheath 3 between upper lock sleeve 2, lower lock sleeve 4.Described draining felt 15 according to welding work pieces groove type, can change shape.
Described underwater camera assembly 9 includes underwater camera, automatic photosensitive welding lens, cold light source and laser pen.Described underwater camera possesses automatic focusing function, coordinates automatic photosensitive welding lens, realizes welding visual.
The special Mini drain cap function of portable underwater local dry cavity automatic welding of the present invention is achieved in that
As shown in Figure 1, after being installed by the special Mini drain cap of portable underwater local dry cavity automatic welding, before entering water, the protective gas first in logical welding gun, anti-sealing backflow enters welding gun, affects welding quality.After arriving welding position, fix this drainage cover, in gas bomb, draining gas enters calm air chamber by quick connector, this drainage cover is entered with layer flow mode, drainage cover internal water accumulation is discharged gently, observes cover internal water accumulation by underwater camera assembly 9 and whether discharge thoroughly, can throughput be increased if desired.
After weld preparation work is ready, adjustment welding condition, arranges shield gas flow rate, welding gun inclination angle, stem elongation etc., can weld.The vapor phase areas combustion of welding arc in this drainage cover; the steam that protective gas, draining gas, water vapor produce and welding fume get more and more; pressure in cover also increases thereupon; drainage arrangement and absorption surface; the effect of draining felt 15, felt skirt 16, as same " one-way cock ", namely only allow the gas in cover to discharge, but the water outside this drainage cover can not enter welding region; in this drainage cover, maintain stable vapor phase areas and welding region, ensure the stable of welding process.
Underwater camera assembly 9 adopts cold light source illumination, camera regulates aperture to carry out focusing and automatic photosensitive electric welding photo automatically, ensures shooting quality.Underwater camera assembly 9 gathers welding image and is transported to multi-function console waterborne by transmission cable, and controllers, according to these video informations, adjusts welding condition by welding control system, realizes the remote monitoring to this drainage cover.If weld fumes is more in cover, when affecting underwater photograph technical quality, draining gas flow can be increased, welding fume be discharged, then returns to former setting value.
Claims (1)
1. the special Mini drain cap of portable underwater local dry cavity automatic welding, this drainage cover includes draining cover body, welding gun, it is characterized in that: this drainage cover this include underwater camera assembly (9), welding oscillator (1) and drainage sealing device;
Described draining cover body includes upper end cover (5), plexiglass tent (10), bottom end cover (14), be threaded connection supporting rod (6), air inlet quick connector (7), lower lock sleeve (4), calm air chamber (8), underwater camera assembly (9) are separately fixed at upper end cover (5) upper and lower side, and upper end cover (5), bottom end cover (14) are connected with plexiglass tent (10) by screw thread;
Described welding gun includes the copper welding torch (11), the air nozzle (12) that connect successively, ignition tip (13); Copper welding torch (11) top is clamped with welding oscillator (1);
Described underwater camera assembly (9) includes underwater camera, automatic photosensitive welding lens, cold light source and laser pen, described underwater camera assembly (9) be adopt cold light source illumination, camera regulates aperture to carry out focusing and the assembly of automatic photosensitive electric welding photo automatically;
The structure of described drainage sealing device is provided with draining felt (15) in bottom end cover (14) periphery, and have felt skirt (16) at the periphery of draining felt (15) cover, and by larynx hoop (17), draining felt (15), felt skirt (16) are fastened on bottom end cover (14); The copper welding torch (11) of welding gun is fastening by upper lock sleeve (2), lower lock sleeve (4), and welding gun is inserted in plexiglass tent (10), be provided with elastic caoutchouc leather sheath (3) between upper lock sleeve (2), lower lock sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362777.8A CN103433606B (en) | 2013-08-19 | 2013-08-19 | The special Mini drain cap of portable underwater local dry cavity automatic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362777.8A CN103433606B (en) | 2013-08-19 | 2013-08-19 | The special Mini drain cap of portable underwater local dry cavity automatic welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103433606A CN103433606A (en) | 2013-12-11 |
| CN103433606B true CN103433606B (en) | 2016-03-02 |
Family
ID=49687370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310362777.8A Expired - Fee Related CN103433606B (en) | 2013-08-19 | 2013-08-19 | The special Mini drain cap of portable underwater local dry cavity automatic welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103433606B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824962A (en) * | 2017-12-01 | 2018-03-23 | 哈尔滨工业大学（威海） | Double-layer drainage device is used in underwater laser cladding and the electric arc combined welding of underwater laser |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521919B (en) * | 2013-10-15 | 2016-06-22 | 江苏大学 | A kind of method realizing underwater laser welding and laser peening and combination unit |
| CN105014233B (en) * | 2014-04-25 | 2017-04-19 | 天津大学 | Draining device for underwater friction stitch welding |
| CN105014234A (en) * | 2014-04-25 | 2015-11-04 | 天津大学 | Underwater friction stitch welding local dry method small draining device |
| CN105758861A (en) * | 2014-12-16 | 2016-07-13 | 山东德瑞防腐材料有限公司 | Draining cover of underwater video installation for sacrificial anode |
| CN104722973B (en) * | 2015-02-03 | 2016-10-05 | 华南理工大学 | A kind of Underwater Welding robot local dry-type drainage arrangement and water discharge method thereof |
| CN106808062A (en) * | 2017-01-12 | 2017-06-09 | 西南交通大学 | Thick-walled structure part electric arc silk filling increasing material manufacturing root area penetration method |
| CN106624258B (en) * | 2017-01-20 | 2022-03-29 | 华南理工大学 | Double-airflow structure local dry method underwater robot welding micro drainage cover |
| CN107119555A (en) * | 2017-03-21 | 2017-09-01 | 中铁（贵州）市政工程有限公司 | Air-tightness steel bridge bearing waterproof construction |
| CN109249132A (en) * | 2017-07-14 | 2019-01-22 | 北京国千智能制造科技研究院有限公司 | A kind of underwater laser melt deposition increasing material manufacturing maintenance system and method |
| CN107775162A (en) * | 2017-10-31 | 2018-03-09 | 哈尔滨工业大学（威海） | Underwater wet welding bubble regulation device |
| CN107931872A (en) * | 2017-12-01 | 2018-04-20 | 哈尔滨工业大学（威海） | A kind of underwater laser welding drainage arrangement and its application method |
| CN107914085A (en) * | 2017-12-01 | 2018-04-17 | 哈尔滨工业大学（威海） | A kind of underwater laser welder and its application method for simulating shallow-water environment |
| CN108161173A (en) * | 2018-01-03 | 2018-06-15 | 哈尔滨工业大学（威海） | Underwater electric arc increasing material manufacturing equipment |
| CN108500421A (en) * | 2018-04-08 | 2018-09-07 | 哈尔滨工业大学（威海） | Device and welding method for the welding of underwater local dry cavity |
| CN109657269B (en) * | 2018-11-05 | 2021-06-08 | 华中科技大学 | Local dry method underwater laser welding numerical simulation method under different water depth pressures |
| CN109277673A (en) * | 2018-11-22 | 2019-01-29 | 江苏海事职业技术学院 | A kind of depressed underwater local dry cavity GMAW welding torch of structure of bilayer |
| CN109676288B (en) * | 2019-01-14 | 2021-05-14 | 天津大学 | Underwater local dry low-pressure welding three-layer drainage cover and method for obtaining low pressure |
| CN111408820B (en) * | 2020-04-14 | 2021-10-29 | 北京石油化工学院 | Micro-fine pipe local dry method underwater electric arc welding maintenance device |
| CN113523494A (en) * | 2020-04-22 | 2021-10-22 | 哈尔滨工业大学（威海） | Underwater wet welding device and method based on liquid protection |
| CN111846145A (en) * | 2020-05-11 | 2020-10-30 | 东南大学 | Marine equipment with self-repairing and underwater facility repairing functions and method |
| CN113664398B (en) * | 2021-07-21 | 2022-11-18 | 哈尔滨工业大学（威海） | Semi-dry plasma-FCAW underwater composite welding device and welding method thereof |
| CN113618195B (en) * | 2021-07-29 | 2022-06-14 | 华南理工大学 | Underwater all-position local dry pulse MIG welding method |
| CN114160917A (en) * | 2021-12-28 | 2022-03-11 | 梁柯 | Be used for underwater welding's spray tube structure, underwater welding equipment |
| CN114406404B (en) * | 2022-01-21 | 2023-09-29 | 北京石油化工学院 | Underwater local dry method high-pressure welding swing mechanism and underwater welding equipment |
| CN115138943A (en) * | 2022-06-22 | 2022-10-04 | 北京石油化工学院 | Multifunctional underwater TIG electric arc repair welding drainage device and repair method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462189A (en) * | 1973-10-04 | 1977-01-19 | Boc International Ltd | Underwater welding |
| JPH0890222A (en) * | 1994-09-14 | 1996-04-09 | Toshiba Corp | Under water welding device |
| CN101244498A (en) * | 2007-02-16 | 2008-08-20 | 北京石油化工学院 | Partial dry type automatic welding drainage arrangement |
| CN102039477A (en) * | 2009-10-13 | 2011-05-04 | 北京石油化工学院 | Local dry-type welding small-sized drainage device |
| CN102179599A (en) * | 2011-04-01 | 2011-09-14 | 清华大学 | Underwater welding local mask with welding line tracking function |
| CN202114422U (en) * | 2011-06-03 | 2012-01-18 | 北京石油化工学院 | Double-layer gas chamber type local dry method underwater welding device |
| CN202114425U (en) * | 2011-06-03 | 2012-01-18 | 北京石油化工学院 | Gas chamber type automatic underwater welding device utilizing local dry method |
| CN102950377A (en) * | 2012-11-23 | 2013-03-06 | 北京石油化工学院 | Local dry-type underwater friction stitch welding device |
-
2013
- 2013-08-19 CN CN201310362777.8A patent/CN103433606B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1462189A (en) * | 1973-10-04 | 1977-01-19 | Boc International Ltd | Underwater welding |
| JPH0890222A (en) * | 1994-09-14 | 1996-04-09 | Toshiba Corp | Under water welding device |
| CN101244498A (en) * | 2007-02-16 | 2008-08-20 | 北京石油化工学院 | Partial dry type automatic welding drainage arrangement |
| CN102039477A (en) * | 2009-10-13 | 2011-05-04 | 北京石油化工学院 | Local dry-type welding small-sized drainage device |
| CN102179599A (en) * | 2011-04-01 | 2011-09-14 | 清华大学 | Underwater welding local mask with welding line tracking function |
| CN202114422U (en) * | 2011-06-03 | 2012-01-18 | 北京石油化工学院 | Double-layer gas chamber type local dry method underwater welding device |
| CN202114425U (en) * | 2011-06-03 | 2012-01-18 | 北京石油化工学院 | Gas chamber type automatic underwater welding device utilizing local dry method |
| CN102950377A (en) * | 2012-11-23 | 2013-03-06 | 北京石油化工学院 | Local dry-type underwater friction stitch welding device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824962A (en) * | 2017-12-01 | 2018-03-23 | 哈尔滨工业大学（威海） | Double-layer drainage device is used in underwater laser cladding and the electric arc combined welding of underwater laser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103433606A (en) | 2013-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103433606B (en) | The special Mini drain cap of portable underwater local dry cavity automatic welding | |
| CN104722973B (en) | A kind of Underwater Welding robot local dry-type drainage arrangement and water discharge method thereof | |
| CN107931842B (en) | Underwater laser additive manufacturing device and using method thereof | |
| CN103586565A (en) | Underwater wet welding tracking system based on active vision | |
| CN107824962A (en) | Double-layer drainage device is used in underwater laser cladding and the electric arc combined welding of underwater laser | |
| CN108161173A (en) | Underwater electric arc increasing material manufacturing equipment | |
| CN101844273A (en) | Underwater pulse laser welding method and device for ocean platform | |
| KR102208713B1 (en) | Smart spray gun used for ship painting and painting method using same | |
| CN202571643U (en) | Underwater semiautomatic welding visible equipment | |
| CN109676288B (en) | Underwater local dry low-pressure welding three-layer drainage cover and method for obtaining low pressure | |
| CN206547143U (en) | A kind of explosion-proof video camera of new infrared | |
| CN108500421A (en) | Device and welding method for the welding of underwater local dry cavity | |
| CN102954277B (en) | Air inlet floating valve device of unmanned undersea craft | |
| CN211118279U (en) | Crawler-type pipeline crawling robot | |
| CN206869292U (en) | The underwater local dry cavity welding drainage cover of tubular structure | |
| CN201674574U (en) | Bar type shallow water underwater detection camera device | |
| CN106218817A (en) | A kind of anti-sinking buoy | |
| CN209349733U (en) | Ocean engineering high-strength special steel welding equipment | |
| CN102310249A (en) | Welding method of composite hose stainless steel joint | |
| CN203956307U (en) | A kind of pipeline welding gas shield device | |
| CN110202259A (en) | Underwater laser increases material prosthetic device | |
| CN210334835U (en) | Underwater local dry method low-pressure welding three-layer drainage cover | |
| CN208979090U (en) | A kind of welding examination hot galvanizing air pipe head peculiar to vessel | |
| CN212106018U (en) | Marine exhaust closing cap device | |
| CN203401214U (en) | Laser welding head with monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20160819 |