Local dry-type welding small-sized drainage device
Technical field
The present invention relates to a kind of underwater welding device, especially realize underwater local dry welding small-sized drainage device.
Background technology
Current Underwater Welding drainage arrangement, produces a part without aqua region between two electrodes of welding gun can make Underwater Welding time, creates the environment welding in similar air, becomes wet method and is welded as local dry cavity welding, thereby can make weldquality greatly improve.But current similar products both domestic and external exist in welding process drainage effect bad, can not in the time of welding, carry out process monitoring, or monitoring equipment is comparatively complicated and huge shortcoming, make whole drainage arrangement complex structure, volume larger, very not convenient in use procedure.
Summary of the invention
Described in background technology, the object of the invention is to overcome existing similar products and can not in the time of welding, carry out process monitoring, or monitoring equipment is comparatively complicated and huge shortcoming, providing a kind of is made up of draining cover body, midget and Minitype underground welding optical fiber sight glass, midget and Minitype underground welding optical fiber sight glass are arranged on the top of draining cover body, drainage cover bottom is provided with underwater sealing device, form the gas allowing in cover and discharge, but water outside cover can not enter the local dry-type welding small-sized drainage device of weld zone.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of local dry-type welding small-sized drainage device, mainly by draining cover body (1), midget (2) and Minitype underground welding optical fiber sight glass (3) composition, wherein: draining cover body (1) is mainly by upper end cover (10), lock sleeve (11), infiltration cover (12), bottom end cover (13), sealing shroud (14) and draining sponge (15) composition, lock sleeve (11) upper and lower side respectively with upper end cover (10), bottom end cover (13) is spirally connected and sealing ring (16) is installed, inner chamber at lock sleeve (11) embeds an infiltration cover (12), infiltration cover (12) is connected with upper end cover (10), in bottom end cover (13), the below of lock sleeve (11) and infiltration cover (12) embeds draining sponge (15), and draining sponge (15) is bonded together with it, cover one deck sealing shroud (14) around draining sponge (15), cover body (1) and workpiece to be welded (17) form an airtight space under water, in upper end cover (10) and the upper boring of infiltration cover (12), welding gun hole (21) is used for being connected and fixed midget (2) in draining cover body (1), connect the air filter (4) of gases at high pressure by high pressure gas body opening (20), insert Minitype underground welding optical fiber sight glass (3) by sight glass hole (22), and seal respectively with upper end cover (10), the surrounding of its air filter (4) is filter screen, and lower end is entity.
Connecting hole (18) and water jets under high pressure hole (19) are set on described cover body upper end cover (10), and water jets under high pressure hole (19) communicate with the gap between lock sleeve (11) and infiltration cover (12).
Correct position on described upper end cover (10) arranges welding robot human body's connecting hole.
Owing to adopting technique scheme, the present invention has the following advantages and effect:
1, the present invention is simple in structure, and cost is lower, is easy to promote;
2, the present invention is because adopting miniature welding gun and type Underwater Welding optical fiber sight glass, thereby cover body inside dimension is reduced greatly, not only makes to be more beneficial to welding robot to be used in conjunction with, and greatly shortened and discharged the cover body required time of maritime interior waters.
3, the Minitype underground welding optical fiber sight glass that the present invention adopts has the advantages such as resolution ratio is high, speed is strong, visual field is large, volume is little, operation is light and handy, long service life, Minitype underground welding optical fiber sight glass is integrated visiting light source, may ultimately reach the object of welding situation in long-range clear observation cover body.
4, the present invention adopts the mode of upper end infiltration, remains that cavernous body is moistening, can prevent the carrying out along with welding, scaling loss cavernous body, and make water inlet in cover body.
Brief description of the drawings
Fig. 1 is structure collectivity schematic perspective view of the present invention
Detailed description of the invention
Illustrated by Fig. 1, a kind of local dry-type welding small-sized drainage device, mainly by draining cover body 1, midget 2 and Minitype underground welding optical fiber sight glass 3 form, wherein: draining cover body 1 is mainly by upper end cover 10, lock sleeve 11, infiltration cover 12, bottom end cover 13, sealing shroud 14 and draining sponge 15 form, lock sleeve 11 upper and lower sides respectively with upper end cover 10, bottom end cover 13 is spirally connected and sealing ring 16 is installed, embed an infiltration cover 12 at the inner chamber of lock sleeve 11, infiltration cover 12 is connected with upper end cover 10, at bottom end cover 13, the below of lock sleeve 11 and infiltration cover 12 embeds draining sponge 15, and draining sponge 15 is bonded together with it, cover one deck sealing shroud 14 around draining sponge 15, cover body 1 and workpiece to be welded 17 form an airtight space under water, boring on upper end cover 10 and infiltration cover 12, welding gun hole 21 is used for being connected and fixed midget 2 in draining cover body 1, connect the air filter 4 of gases at high pressure by high pressure gas body opening 20, insert Minitype underground welding optical fiber sight glass 3 by sight glass hole 22, and seal respectively with upper end cover 10, the surrounding of its air filter 4 is filter screen, and lower end is entity.
Separately know, the surrounding of air filter 4 is filter screens, and lower surface is entity, after being injected, gases at high pressure discharge from surrounding after filter screen is broken up, and directly do not inject from bottom, make like this gas in cover, form circulation, avoid gases at high pressure directly to inject and electric arc is produced to disturbance.
On cover body upper end cover 10, be also provided with connecting hole 18 and water jets under high pressure hole 19, seawater through pressurization can flow into the gap between lock sleeve 11 and infiltration cover 12 along hole, directly arrive draining sponge 15 from upper end, prevent from making to intake in cover body along with the carrying out scaling loss cavernous body 15 of welding.
Specific implementation process is as follows: drainage cover 1 makes draining cavernous body 15 compress workpiece 17 to be welded after entering water, make cover body 1 form under water a confined space, then inject gases at high pressure, seawater is forced out between cavernous body 15 and workpiece 17 to striking welding while utilizing humidity detector to detect to reach striking condition in confined space.When welding, electric arc is in the interior burning of cover body 1, and the steam when gas that solder wire material self produces and water vapor is more and more, pressure in cover body 1 is increasing, and now, cavernous body 15 has played the effect of " check valve ", unnecessary gas in cover body 1 is discharged, and seawater can not enter; Moreover Minitype underground welding optical fiber sight glass 3 is integrated visiting light source, may ultimately reach the object of welding situation in long-range clear observation cover body, thereby has reached the object of local dry-type welding.