CN105583546A - Real-time monitoring device and method for simulated underwater welding droplet transfer - Google Patents
Real-time monitoring device and method for simulated underwater welding droplet transfer Download PDFInfo
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- CN105583546A CN105583546A CN201610148709.5A CN201610148709A CN105583546A CN 105583546 A CN105583546 A CN 105583546A CN 201610148709 A CN201610148709 A CN 201610148709A CN 105583546 A CN105583546 A CN 105583546A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
Abstract
The invention relates to a real-time monitoring device for simulated underwater welding droplet transfer. The real-time monitoring device for simulated underwater welding droplet transfer is characterized in that a welding workpiece is placed on a workbench in a pressure container; a welding mechanism is supported on the welding workpiece in the pressure container through a support; an X ray source, an X ray image intensifier, a high-speed camera and the welding mechanism are all connected with a remote control mechanism; the welding workpiece and a welding gun are connected with the remote control mechanism through a welding electrical signal acquisition unit; the walls, corresponding to the left side and the right side of the welding workpiece, of the pressure container are each provided with a window; the X ray source is mounted on one side of the pressure container; and the X ray image intensifier and the high-speed camera are sequentially arranged on the other side of the pressure container. The real-time monitoring device for simulated underwater welding droplet transfer has the advantages that the welding process under a high-pressure environment which is 200 m deep under a water surface can be simulated; the effect of a welding environment is small; the imaging quality is high; the imaging effect has high-quality contrast ratio so that droplet shapes including droplet internal defects can be well observed; the image acquisition frequency is high; and remote control and operation are convenient.
Description
Technical field
The invention belongs to welding process monitoring technical field, specifically relate to Welding Molten Drop transition real-time monitoring device and monitoring method under a kind of Simulated Water downforce environment.
Background technology
In the last few years, world powers is all placed on strategic position by ocean development, marine resources development and utilization are put in critical positions, in " made in China 2025 ", also explicitly point out and will greatly develop deep-sea detecting, resources development and utilization, operation on the sea Support Equipment and critical system and special equipment, emphasize to grasp that emphasis corollary equipment is integrated, intelligent, modularized design manufactures core technology. In addition, the development of ocean be unable to do without the upgrading of marine engineering equipment and high performance ship, needs to improve existing ocean engineering technology simultaneously. Underwater welding technology is one of key technology of the large ocean structures such as exploitation ocean, exploitation submarine oil and assembling, maintenance such as production platform, petroleum pipeline and storehouse, seabed, is also the necessary technology means of the work such as naval vessel emergency repair, marine salvage, bridge erection
Underwater welding technology is due to the particularity of operating environment, metallurgical process, mass-and heat-transfer process have a very large change compared with traditional welding method, the aspects such as the mechanism of interaction effect of its droplet transfer process, arc shape, welding process and underwater environment are not yet clear and definite, so the research level of its Welding Metallurgy mechanism, Control Welding Process aspect has seriously been restricted to the development of underwater welding technology. Especially as very important droplet transfer process in welding diabatic process, also very effective apparatus and method are not carried out Real-Time Monitoring to it at present, especially in the time that welding process is carried out under simulated high-pressure environment.
For traditional electrical arc-welding droplet transfer process monitoring method be: adopt optical camera and camera lens to be equipped with optical filter and light damping plate, carry high-speed camera acquisition system the droplet transfer of welding arc zone is carried out to direct monitoring observation, need if desired to adopt external light source as LASER Light Source electric arc arc light is carried out backlight, to eliminate the interference of electric arc arc light. Said method in traditional electrical arc-welding droplet transfer observation process, has become mature technology and application is very extensive, but the method cannot realize in Welding Molten Drop transition observation process under water, subject matter is owing to can producing a large amount of bubbles and the disturbance of welding region ambient water in welding process under water, can cause very large refraction and reflex to the light path of the method imaging system, cannot blur-free imaging simultaneously owing to there is a large amount of bubbles near molten drop, the method cannot separate molten drop with bubble effectively. So observing for the Real-Time Monitoring of Underwater Welding droplet transfer is at present a great problem in underwater welding technology research process. There is no at present the report of Underwater Welding droplet transfer real time monitoring both at home and abroad, especially the report of the real-time detection technique of Welding Molten Drop transition under simulation wet hyperbaric environment.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of form reasonable, easy to operate, be subject to welding surroundings affect little, applicability is wide, image quality is high, image collection frequency is high, can realize Underwater Welding droplet transfer real-time monitoring device and monitoring method under the Simulated Water downforce environment of Long-distance Control.
The technical scheme that the present invention solves the problems of the technologies described above employing is:
The real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water, comprise pressure vessel, x-ray source, x ray image intensifier, high-speed camera, welding mechanism, welding electrical signal collection unit, Long-distance Control mechanism, it is characterized in that: welding work pieces is placed on the workbench in pressure vessel, welding mechanism through stent support in pressure vessel welding work pieces above, x-ray source, x ray image intensifier, high-speed camera, welding mechanism is connected with Long-distance Control mechanism respectively, welding work pieces is connected with welding electrical signal collection unit with welding mechanism, welding electrical signal collection unit is connected with Long-distance Control mechanism, on pressure vessel wall corresponding to the welding work pieces left and right sides, be respectively equipped with form, x-ray source is arranged on left side or the right side of pressure vessel, the right side of pressure vessel or left side are provided with x ray image intensifier and high-speed camera successively, the X ray that described x-ray source is launched sees through the arc zone of described welding work pieces top through pressure vessel form, irradiating droplet transfer process forms the X ray image of droplet transfer and is again received by x ray image intensifier through pressure vessel opposite side form, described x ray image intensifier is converted into visible image by droplet transfer X ray image and casts out and taken and be converted into data signal and be sent to described Long-distance Control mechanism by described high-speed camera, described welding electrical signal collection unit carries out synchronous acquisition to the weldingvoltage in welding process and welding current and is sent to described Long-distance Control mechanism, Long-distance Control mechanism carries out the signal of video signal of collection and the welding signal of telecommunication Real-Time Monitoring and compares with the welding signal of telecommunication obtaining welding droplet transfer process in real time.
Pressure vessel of the present invention is simulation depth of water pressure vessel, conduit one end is passed pressure vessel wall and is tightly connected with pressure vessel wall, the conduit other end is connected with air pump, air pump is connected with Long-distance Control mechanism, conduit or pressure vessel are provided with Pressure gauge, make the water simulation different depth water environment of pressure vessel.
Welding mechanism of the present invention comprises welding gun, welding gun motion, and wherein welding gun is fixed on welding gun motion, and welding gun motion is made up of stepper motor and slide rail, can realize the motion on X, Y, Z tri-direction of principal axis.
Welding electrical signal collection of the present invention unit comprises welding current sensor, weldingvoltage sensor, data collecting card, welding current sensor and weldingvoltage sensor are electrically connected with data collecting card respectively, and data collecting card electricity is electrically connected with Long-distance Control mechanism.
Long-distance Control of the present invention mechanism comprises X ray remote controllers, welding mechanism remote controllers, image collection remote controllers, simulated water pressure pressure vessel remote controllers, welding mechanism controller and computer, the welding gun that can realize in described x-ray source, described x ray image intensifier, described pressure vessel, described some signal gathering unit, described welding mechanism and welding mechanism by described Long-distance Control mechanism carries out work unlatching or cuts out, and realizes pressurising pressure release control, the X shooting image collection of pressure vessel and weld electrical signal collection and synchronize; Real-time pictures can be observed by the computer in Long-distance Control mechanism, and the image of collection can carry out playback and storage by the computer in Long-distance Control mechanism.
High-speed camera of the present invention adopts electronic Tri-Chargable lens, described Long-distance Control mechanism is provided with high-speed camera remote controllers, regulate in real time the long-range zoom of high-speed camera, focusing and adjust aperture scale by described high-speed camera remote controllers, to obtain high quality graphic data.
The present invention is also provided with vitriol chamber, and at least pressure vessel, x-ray source, x ray image intensifier are arranged in vitriol chamber, and the collection of Welding Molten Drop transition signal of video signal and the welding signal of telecommunication is all carried out under vitriol chamber protection, guarantees staff's personal safety.
A method of real-time for Welding Molten Drop transition under Simulated Water, is characterized in that comprising the following steps:
Step 1, by the X ray remote controllers adjustment in Long-distance Control mechanism with determine and focal length, multiplication factor, the transmitted intensity of the x-ray imaging system that x-ray source, x ray image intensifier form make it meet the requirement of X ray image blur-free imaging;
Step 2, by the high-speed camera remote controllers adjustment in Long-distance Control mechanism and the aperture, focal length, focusing of determining high-speed camera from, frequency acquisition, resolution ratio, make it meet the clear collection to image amplifier output visible image;
Step 3, be filled with air simulation Underwater Pressure environment to dark pressure vessel inside by air pump, determine pressure vessel internal pressure by pressure gauge reading, make pressure vessel obtain the different pressure environments of the degree of depth under water;
Step 4, by arc zone, droplet transfer position and the welding track of Long-distance Control institutional adjustment and definite welding mechanism, make it meet droplet transfer process and occur in X ray image areas imaging, X ray penetrating arc region and molten drop;
Step 5, make welding mechanism and welding gun work by the welding mechanism controller in Long-distance Control mechanism, trigger x-ray source, X ray image receiver, welding electrical signal collection unit, high-speed camera by X ray remote controllers, welding mechanism remote controllers, image collection remote controllers simultaneously and become visible image, by high-speed camera, the Welding Molten Drop transition on welding work pieces is carried out to high speed acquisition ray video conversion by ray panadaptor;
Step 6, can carry out Real-Time Monitoring to welding droplet transfer process by the computer in Long-distance Control mechanism, and optionally carry out data storage.
The present invention places welding mechanism in pressure vessel, can complete in pressure vessel outside the real-time control of butt welding machine structure. And at pressure vessel both sides installation x-ray source, x ray image intensifier, described x ray image intensifier can be converted into droplet transfer X ray image visible image and is filmed and store into the computer in Long-distance Control mechanism by the high-speed camera of x ray image intensifier rear end, realizes droplet transfer image collection; Meanwhile, weldingvoltage and the welding current of pad quotation marks collecting unit to welding process carries out synchronous acquisition; The signal of video signal gathering and the welding signal of telecommunication are real-time transmitted in the computer in Long-distance Control mechanism, to welding droplet transfer process Real-Time Monitoring, realize the visual of welding process by computer. The present invention has advantages of following: (1), can simulate the Underwater Welding process under depth of water 200m hyperbaric environment, and welding droplet transfer process is carried out to Real-Time Monitoring; (2), affected by welding surroundings little, especially extreme environment (as underwater environment, smoke and dust environment, the interference of electric arc arc light etc.); (3), image quality is high, the feature of radial imaging has determined that imaging effect has high-quality contrast, and droplet shape is comprised to molten drop internal flaw all can realize good observation; (4), image collection frequency is high; (5), Long-distance Control, easy to operate. A kind of desirable Underwater Welding droplet transfer real-time monitoring device and method.
Brief description of the drawings
Fig. 1 is the Underwater Welding droplet transfer real-time monitoring device composition structural representation under Simulated Water downforce environment of the present invention.
Label in figure is: 1. vitriol chamber; 2.X radiographic source; 3. pressure vessel; 4 welding guns; 5. welding electrical signal collection unit; 6. welding work pieces; 7. Welding Molten Drop; 8. arc zone; 9. Long-distance Control mechanism; 10. welding mechanism; 11.X ray image amplifier; 12. high-speed cameras.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
The real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water, comprise pressure vessel, x-ray source, x ray image intensifier, high-speed camera, welding mechanism, welding electrical signal collection unit, Long-distance Control mechanism, it is characterized in that: welding work pieces is placed on the workbench in pressure vessel, welding mechanism through stent support in pressure vessel welding work pieces above, x-ray source, x ray image intensifier, high-speed camera, welding mechanism is connected with Long-distance Control mechanism respectively, welding work pieces is connected with welding electrical signal collection unit with welding mechanism, welding electrical signal collection unit is connected with Long-distance Control mechanism, on pressure vessel wall corresponding to the welding work pieces left and right sides, be respectively equipped with form, x-ray source is arranged on left side or the right side of pressure vessel, the right side of pressure vessel or left side are provided with x ray image intensifier and high-speed camera successively, the X ray that described x-ray source is launched sees through the arc zone of described welding work pieces top through pressure vessel form, irradiating droplet transfer process forms the X ray image of droplet transfer and is again received by x ray image intensifier through pressure vessel opposite side form, described x ray image intensifier is converted into visible image by droplet transfer X ray image and casts out and taken and be converted into data signal and be sent to described Long-distance Control mechanism by described high-speed camera, described welding electrical signal collection unit carries out synchronous acquisition to the weldingvoltage in welding process and welding current and is sent to described Long-distance Control mechanism, Long-distance Control mechanism carries out the signal of video signal of collection and the welding signal of telecommunication Real-Time Monitoring and compares with the welding signal of telecommunication obtaining welding droplet transfer process in real time. described pressure vessel is simulation depth of water pressure vessel, conduit one end is passed pressure vessel wall and is tightly connected with pressure vessel wall, the conduit other end is connected with air pump, air pump is connected with Long-distance Control mechanism, conduit or pressure vessel are provided with Pressure gauge, make the water simulation different depth water environment of pressure vessel, described welding mechanism comprises welding gun, welding gun motion, and wherein welding gun is fixed on welding gun motion, and welding gun motion is made up of stepper motor and slide rail, can realize the motion on X, Y, Z tri-direction of principal axis, described welding electrical signal collection unit comprises welding current sensor, weldingvoltage sensor, data collecting card, and welding current sensor and weldingvoltage sensor are electrically connected with data collecting card respectively, and data collecting card electricity is electrically connected with Long-distance Control mechanism, described Long-distance Control mechanism comprises X ray remote controllers, welding mechanism remote controllers, image collection remote controllers, simulated water pressure pressure vessel remote controllers, welding mechanism controller and computer, the welding gun that can realize in described x-ray source, described x ray image intensifier, described pressure vessel, described some signal gathering unit, described welding mechanism and welding mechanism by described Long-distance Control mechanism carries out work unlatching or cuts out, and realizes pressurising pressure release control, the X shooting image collection of pressure vessel and weld electrical signal collection and synchronize, real-time pictures can be observed by the computer in Long-distance Control mechanism, and the image of collection can carry out playback and storage by the computer in Long-distance Control mechanism, described high-speed camera adopts electronic Tri-Chargable lens, described Long-distance Control mechanism is provided with high-speed camera remote controllers, regulate in real time the long-range zoom of high-speed camera, focusing and adjust aperture scale by described high-speed camera remote controllers, to obtain high quality graphic data, the present invention is also provided with vitriol chamber, and at least pressure vessel, x-ray source, x ray image intensifier are arranged in vitriol chamber, and the collection of Welding Molten Drop transition signal of video signal and the welding signal of telecommunication is all carried out under vitriol chamber protection, guarantees staff's personal safety.
A method of real-time for Welding Molten Drop transition under Simulated Water, is characterized in that comprising the following steps:
Step 1, by the X ray remote controllers adjustment in Long-distance Control mechanism with determine and focal length, multiplication factor, the transmitted intensity of the x-ray imaging system that x-ray source, x ray image intensifier form make it meet the requirement of X ray image blur-free imaging;
Step 2, by the high-speed camera remote controllers adjustment in Long-distance Control mechanism and the aperture, focal length, focusing of determining high-speed camera from, frequency acquisition, resolution ratio, make it meet the clear collection to image amplifier output visible image;
Step 3, be filled with air simulation Underwater Pressure environment to dark pressure vessel inside by air pump, determine pressure vessel internal pressure by pressure gauge reading, make pressure vessel obtain the different pressure environments of the degree of depth under water;
Step 4, by arc zone, droplet transfer position and the welding track of Long-distance Control institutional adjustment and definite welding mechanism, make it meet droplet transfer process and occur in X ray image areas imaging, X ray penetrating arc region and molten drop;
Step 5, make welding mechanism and welding gun work by the welding mechanism controller in Long-distance Control mechanism, trigger x-ray source, X ray image receiver, welding electrical signal collection unit, high-speed camera by X ray remote controllers, welding mechanism remote controllers, image collection remote controllers simultaneously and become visible image, by high-speed camera, the Welding Molten Drop transition on welding work pieces is carried out to high speed acquisition ray video conversion by ray panadaptor;
Step 6, can carry out Real-Time Monitoring to welding droplet transfer process by the computer in Long-distance Control mechanism, and optionally carry out data storage.
The present invention places welding mechanism in pressure vessel, can complete in pressure vessel outside the real-time control of butt welding machine structure. And at pressure vessel both sides installation x-ray source, x ray image intensifier, described x ray image intensifier can be converted into droplet transfer X ray image visible image and is filmed and store into the computer in Long-distance Control mechanism by the high-speed camera of x ray image intensifier rear end, realizes droplet transfer image collection; Meanwhile, weldingvoltage and the welding current of pad quotation marks collecting unit to welding process carries out synchronous acquisition; The signal of video signal gathering and the welding signal of telecommunication are real-time transmitted in the computer in Long-distance Control mechanism, to welding droplet transfer process Real-Time Monitoring, realize the visual of welding process by computer. The present invention has advantages of following: (1), can simulate the Underwater Welding process under depth of water 200m hyperbaric environment, and welding droplet transfer process is carried out to Real-Time Monitoring; (2), affected by welding surroundings little, especially extreme environment (as underwater environment, smoke and dust environment, the interference of electric arc arc light etc.); (3), image quality is high, the feature of radial imaging has determined that imaging effect has high-quality contrast, and droplet shape is comprised to molten drop internal flaw all can realize good observation; (4), image collection frequency is high; (5), Long-distance Control, easy to operate. A kind of desirable Underwater Welding droplet transfer real-time monitoring device and method.
Embodiment 1: as can be seen from Figure 1, Underwater Welding droplet transfer real-time monitoring device under a kind of Simulated Water downforce environment, it includes x-ray source 2, x ray image intensifier 10, welding electrical signal collection unit 5, pressure vessel 3, Long-distance Control mechanism 9, described x-ray source 2 is arranged on pressure vessel 3 one sides, and x ray image intensifier 10 is arranged on the opposite side of pressure vessel 3; Described x-ray source 2 sends the arc zone 8 of X ray through described welding work pieces 6 tops, form droplet transfer X ray image and project on described x ray image intensifier 11, described x ray image intensifier 11 is converted into visible image by droplet transfer X ray image and is gathered and sent to the computer in described Long-distance Control mechanism 9 by described high-speed camera 11, realizes droplet transfer image collection; Weldingvoltage and the welding current of described welding electrical signal collection unit 5 to welding process carries out synchronous acquisition; The signal of video signal gathering and the welding signal of telecommunication are real-time transmitted in the computer in Long-distance Control mechanism 9, by computer, welding droplet transfer process are carried out to Real-Time Monitoring.
In the mechanism of Long-distance Control described in apparatus of the present invention 9, being provided with X ray remote controllers, welding mechanism remote controllers, pressure vessel charges and discharge and presses remote controllers, image collection remote controllers and computer, can realize described x-ray source, described x ray image intensifier, described welding electrical signal collection unit and welding mechanism by described Long-distance Control mechanism and carry out the open and close of weld job, can realize pressurising and the pressure release of described pressure vessel, and can realize X ray image collection with welding electrical signal collection synchronize. Monitoring real-time pictures can be observed by the computer in Long-distance Control mechanism, after weld job finishes, close radiographic source, welding mechanism, welding electrical signal collection unit, ray panadaptor by Long-distance Control mechanism, the image of collection can carry out playback, storage by the computer in Long-distance Control mechanism.
In apparatus of the present invention, be also provided with a vitriol chamber 1, described radiographic source 2, ray panadaptor 11, welding electrical signal collection unit 5, pressure vessel 3 are installed in vitriol chamber. The collection of Welding Molten Drop transition signal of video signal and the welding signal of telecommunication is all carried out under vitriol chamber protection, guarantees staff's personal safety.
The present invention uses above-mentioned Underwater Welding droplet transfer real-time monitoring device to realize the method for Underwater Welding droplet transfer Real-Time Monitoring, comprises the following steps:
Focal length, multiplication factor, the transmitted intensity of step 1, the x-ray imaging system that forms by Long-distance Control institutional adjustment and definite x-ray source, x ray image intensifier, make it meet the requirement of X ray image blur-free imaging;
The aperture of step 2 by Long-distance Control institutional adjustment and definite high-speed camera, focal length, focusing, from, frequency acquisition, resolution ratio, make its satisfied clear collection to image amplifier output visible image;
Step 3, be filled with air simulation Underwater Pressure environment to simulation depth of water pressure vessel inside, determine pressure vessel internal pressure by pressure gauge reading, by regulating internal tank pressure to obtain the different pressure environments of the degree of depth under water;
Step 4, by arc zone, droplet transfer position and the welding track of Long-distance Control institutional adjustment and definite welding mechanism, make it meet droplet transfer process and occur within the scope of ray video imaging, X ray penetrating arc region and molten drop;
Step 5, trigger x-ray source, X ray image receiver, welding electrical signal collection unit, high-speed camera and welding system by Long-distance Control mechanism and become visible image, by high-speed camera, above-mentioned visible image is carried out to high speed acquisition ray video conversion by ray panadaptor, realize the effective monitoring to droplet transfer process;
Step 6, can carry out Real-Time Monitoring to welding droplet transfer process by computer, and optionally carry out data storage.
Embodiment: as shown in Figure 1, the Underwater Welding droplet transfer real-time monitoring device of this Simulated Water downforce environment, mainly contains vitriol chamber 1, x-ray source 2, pressure vessel 3, welding electrical signal collection unit 5, Long-distance Control mechanism 9, x ray image intensifier 11 and high-speed camera 12 and forms. x-ray source 2 is placed on respectively pressure vessel 3 two ends with x ray image intensifier 11, ensures that x-ray source 2 launching centre positions and image amplifier input center remain on same level line. adjust the position of welding gun 4 in pressure vessel 3 by Long-distance Control mechanism 9, ensure that welding gun 4 ends are positioned at observation field range, to guarantee that arc zone 8 is positioned at and observes field range with Welding Molten Drop 7 in welding process. before weld job starts, first open x-ray source 2, welding mechanism 10, x ray image intensifier 11 and high-speed camera 12 by Long-distance Control mechanism 9, first the welding material of Butt welding gun 4 ends is taken, utilize imaging effect to adjust the distance of X ray intensity, x-ray source 2 and welding work pieces 6, x ray image intensifier 11 and the distance of welding work pieces 6 and the imaging parameters such as aperture, focal length of high-speed camera 12, ensure that imaging effect is clear. setting after imaging parameters, welding parameter is set, comprising: weldingvoltage, welding current, speed of welding, welding track etc. by Long-distance Control mechanism 9, pressure vessel is carried out to pressurising subsequently, determine and reach needed pressure numerical value by pressure gauge reading. set after above-mentioned parameter by Long-distance Control mechanism 9, start weld job by Long-distance Control mechanism 9 simultaneously, the high speed acquisition function of welding electrical signal collection unit 5 and high-speed camera 11, Welding Molten Drop 7 to welding arc zone 8 is carried out Real-Time Monitoring, the signal of video signal gathering and the welding signal of telecommunication are real-time transmitted in the computer in Long-distance Control mechanism 9, Real-Time Monitoring picture can be observed by the computer in Long-distance Control mechanism 9, after weld job technology, close x-ray source 2 by Long-distance Control mechanism 9, electrical signal collection unit 5, welding mechanism 10, x ray image intensifier 11, high-speed camera 12, and by Long-distance Control mechanism 9, pressure vessel is carried out to pressure release, the image gathering can carry out playback by the computer in Long-distance Control mechanism 9, storage.
The present invention adopts the mode of pressure vessel pressurization to simulate wet hyperbaric environment, and use the mode of " x-ray imaging changes into visible ray " to replace traditional independent " visible ray " mode, the Underwater Welding droplet transfer is carried out to Real-Time Monitoring, monitoring means uniqueness, imaging mode uniqueness, imaging effect uniqueness. And it is wide to be subject to welding surroundings to affect little applicability, droplet transfer observation image quality applicable to all arc-welding methods is high, the feature of x-ray imaging has determined that imaging effect has high-quality contrast, and droplet shape is comprised to molten drop internal flaw all can realize good observation image collection frequency high-altitude control, easy to operate.
Underwater Welding droplet transfer real-time monitoring device and the method for a kind of Simulated Water downforce environment above example of the present invention being provided are described in detail, having applied specific case herein sets forth embodiments of the present invention, the explanation of above embodiment is just for helping to understand method of the present invention and core concept while thereof, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications. In sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the real-time monitoring device of Welding Molten Drop transition under a Simulated Water, comprise pressure vessel, x-ray source, x ray image intensifier, high-speed camera, welding mechanism, welding electrical signal collection unit, Long-distance Control mechanism, it is characterized in that: welding work pieces is placed on the workbench in pressure vessel, welding mechanism through stent support in pressure vessel welding work pieces above, x-ray source, x ray image intensifier, high-speed camera, welding mechanism is connected with Long-distance Control mechanism respectively, welding work pieces is connected with welding electrical signal collection unit, welding electrical signal collection unit is connected with Long-distance Control mechanism, on pressure vessel wall corresponding to the welding work pieces left and right sides, be respectively equipped with form, x-ray source is arranged on left side or the right side of pressure vessel, the right side of pressure vessel or left side are provided with x ray image intensifier and high-speed camera successively, the X ray that described x-ray source is launched sees through the arc zone of described welding work pieces top through pressure vessel form, irradiating droplet transfer process forms the X ray image of droplet transfer and is again received by x ray image intensifier through pressure vessel opposite side form, described x ray image intensifier is converted into visible image by droplet transfer X ray image and casts out and taken and be converted into data signal and be sent to described Long-distance Control mechanism by described high-speed camera, described welding electrical signal collection unit carries out synchronous acquisition to the weldingvoltage in welding process and welding current and is sent to described Long-distance Control mechanism, Long-distance Control mechanism carries out the signal of video signal of collection and the welding signal of telecommunication Real-Time Monitoring and compares with the welding signal of telecommunication obtaining welding droplet transfer process in real time.
2. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 1, it is characterized in that pressure vessel is simulation depth of water pressure vessel, conduit one end is passed pressure vessel wall and is tightly connected with pressure vessel wall, the conduit other end is connected with air pump, air pump is connected with Long-distance Control mechanism, conduit or pressure vessel are provided with Pressure gauge, make the water simulation different depth water environment of pressure vessel.
3. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 1, it is characterized in that welding mechanism comprises welding gun, welding gun motion, wherein welding gun is fixed on welding gun motion, welding gun motion is made up of stepper motor and slide rail, can realize the motion on X, Y, Z tri-direction of principal axis.
4. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 1, it is characterized in that welding electrical signal collection unit and comprise welding current sensor, weldingvoltage sensor, data collecting card, welding current sensor and weldingvoltage sensor are electrically connected with data collecting card respectively, and data collecting card electricity is electrically connected with Long-distance Control mechanism.
5. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 1, it is characterized in that Long-distance Control mechanism comprises X ray remote controllers, welding mechanism remote controllers, image collection remote controllers, simulated water pressure pressure vessel remote controllers, welding mechanism controller and computer, can realize described x-ray source by described Long-distance Control mechanism, described x ray image intensifier, described pressure vessel, described some signal gathering unit, described welding mechanism, described welding gun carries out work unlatching or cuts out, and realize the pressurising pressure release control of pressure vessel, X shooting image collection is synchronizeed with welding electrical signal collection, real-time pictures can be observed by the computer in Long-distance Control mechanism, and the image of collection can carry out playback and storage by the computer in Long-distance Control mechanism.
6. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 5, it is characterized in that high-speed camera adopts electronic Tri-Chargable lens, described Long-distance Control mechanism is provided with high-speed camera remote controllers, is regulated in real time the long-range zoom of high-speed camera, focusing and is adjusted aperture scale by described high-speed camera remote controllers.
7. the real-time monitoring device of Welding Molten Drop transition under a kind of Simulated Water according to claim 1, it is characterized in that being provided with vitriol chamber, at least pressure vessel, x-ray source, x ray image intensifier are arranged in vitriol chamber, the collection of Welding Molten Drop transition signal of video signal and the welding signal of telecommunication is all carried out under vitriol chamber protection, guaranteed staff's personal safety.
8. a method of real-time for Welding Molten Drop transition under Simulated Water, is characterized in that comprising the following steps:
Step 1, by the X ray remote controllers adjustment in Long-distance Control mechanism with determine and focal length, multiplication factor, the transmitted intensity of the x-ray imaging system that x-ray source, x ray image intensifier form make it meet the requirement of X ray image blur-free imaging;
Step 2, by the high-speed camera remote controllers adjustment in Long-distance Control mechanism and the aperture, focal length, focusing of determining high-speed camera from, frequency acquisition, resolution ratio, make it meet the clear collection to image amplifier output visible image;
Step 3, be filled with air simulation Underwater Pressure environment to dark pressure vessel inside by air pump, determine pressure vessel internal pressure by pressure gauge reading, make pressure vessel obtain the different pressure environments of the degree of depth under water;
Step 4, by arc zone, droplet transfer position and the welding track of Long-distance Control institutional adjustment and definite welding mechanism, make it meet droplet transfer process and occur in X ray image areas imaging, X ray penetrating arc region and molten drop;
Step 5, by welding mechanism controller welding mechanism and welding gun work in Long-distance Control mechanism, trigger x-ray source, X ray image receiver, welding electrical signal collection unit, high-speed camera by X ray remote controllers, welding mechanism remote controllers, image collection remote controllers simultaneously and become visible image, by high-speed camera, the Welding Molten Drop transition on welding work pieces is carried out to high speed acquisition ray video conversion by ray panadaptor;
Step 6, can carry out Real-Time Monitoring to welding droplet transfer process by the computer in Long-distance Control mechanism, and optionally carry out data storage.
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| CN111044434A (en) * | 2019-12-31 | 2020-04-21 | 太原科技大学 | Simulation device and method for gas metal arc welding molten drop transition process |
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| CN115383260A (en) * | 2022-10-11 | 2022-11-25 | 湘潭大学 | GTAW process molten drop transition frequency control method based on arc sensing |
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Application publication date: 20160518 |