CN102773582B - Submersible type digital underwater wet welding power supply and application thereof - Google Patents
Submersible type digital underwater wet welding power supply and application thereof Download PDFInfo
- Publication number
- CN102773582B CN102773582B CN201210289768.6A CN201210289768A CN102773582B CN 102773582 B CN102773582 B CN 102773582B CN 201210289768 A CN201210289768 A CN 201210289768A CN 102773582 B CN102773582 B CN 102773582B
- Authority
- CN
- China
- Prior art keywords
- welding
- housing
- error
- control
- circuit
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 147
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 40
- 230000008569 process Effects 0.000 claims abstract description 26
- 229950000845 politef Drugs 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 8
- 238000005457 optimization Methods 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 229910052756 noble gas Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000001131 transforming effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000013535 sea water Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 230000009189 diving Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010014357 Electric shock Diseases 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007778 shielded metal arc welding Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Abstract
The present invention relates to a kind of welding equipment, specifically a kind of water pressure resistance, good seal performance, can stable output and realize the Submersible type digital underwater wet welding power supply to Control Welding Process based on DSP under 200m environment under water, including housing and the main circuit of the welding machine being positioned at housing, it is characterized in that the two ends of described housing are provided with flange and flange end cap, wherein flange adopts overlap joint butt welding to be connected with housing, flange end cap and flange adopt the politef flange gasket of thickness 3mm to seal, housing is additionally provided with air valve and power input cable interface, control cable interface, power output interface, the present invention has water pressure resistance, good seal performance, can under water under 200m environment stable output wait advantage significantly.
Description
Technical field
The present invention relates to a kind of welding equipment, specifically a kind of water pressure resistance, good seal performance, can stable output and realize the Submersible type digital underwater wet welding power supply to Control Welding Process and application thereof based on DSP under 200m environment under water.
Background technology
Along with the development of solder technology, underwater welding technology has become current much-talked-about topic.Large ship is repaired, and submarine pipeline connection etc. all must adopt underwater welding technology.Underwater environment makes Underwater Welding process more much more complex than land welding process, except solder technology, also relates to the factors such as diving operation technology.Although adopting the underwater welding technology such as local dry cavity can obtain desired welding quality, but operating environment etc. being subject to certain restriction.Underwater wet welding is widely used compared with welding with dry method and local dry cavity；But safety is worst, in sea water during welding, if sea water enters in the power system of welding equipment, not only cause Danger Electric shock risk, also can damage welding equipment, be therefore sealed to a safety problem of wet method welding equipment.During underwater wet welding, the equipment used is easily subject to the corrosion of sea water, to consider seawater corrosion resistance problem on material selects.And when deep water place wet method is welded, immense pressure produced by sea water, welding equipment also to have certain anti-pressure ability.
Major part underwater wet welding system, its source of welding current and control system on land, wire-feed motor under water, this system be suitable for the depth of water shallower when welding.And for the depth of water deeper time, this system has lost feasibility, and this is mainly by the characteristic of welding arc and what power source internal device pressure voltage determined.Welding arc is the gas discharge phenomenon of a kind of low-voltage, big electric current, when the depth of water is deeper, if the source of welding current is on land, electrode holder line and ground wire also can be very long, resistance is very big, due to this characteristic of electric arc, has very big pressure drop on electrode holder line and ground wire, thus causing source of welding current output end voltage dramatic drop-off, it is impossible to complete Underwater Welding process.How to reduce the long problem of pressure drop brought of outfan cable, it is ensured that the reliable output of the source of welding current just becomes the key issue solving deepwater welding.Simultaneously, along with China is to marine energy (tide, wave, ocean current, the temperature difference) exploitation scale increasing, this is also the power source that provides of deep-sea Underwater Welding, and the following instant Underwater Welding that immediately generates electricity just becomes reduction construction under water and connects and the effective way repairing feasibility with rehabilitation cost, raising flood deep welding.For reaching the purpose of above-mentioned deepwater welding, the present invention have developed the Submersible type digital underwater wet welding power supply based on DSP control can being positioned under water.
Summary of the invention
The present invention is directed to the shortcoming and defect that prior art exists, it is proposed to a kind of water pressure resistance, good seal performance, can stable output and realize the Submersible type digital underwater wet welding power supply to Control Welding Process and application thereof based on DSP under 200m environment under water.
The present invention can be reached by following measures:
A kind of Submersible type digital underwater wet welding power supply, including housing and the main circuit of the welding machine being positioned at housing, it is characterized in that the two ends of described housing are provided with flange and flange end cap, wherein flange adopts overlap joint butt welding to be connected with housing, flange end cap and flange adopt the politef flange gasket of thickness 3mm to seal, housing is provided with air valve and the power input cable interface being connected with main circuit of the welding machine respectively, controls cable interface, power output interface, shell is filled with noble gas, when degree of depth h is in the scope of 0m-100m, housing internal gas pressure value P0=0.2MP, as degree of depth h > 100m, P0=0.2+0.01h, power input cable interface on housing, control cable interface all adopt the watertight connector of plug-in type, this watertight connector mainly includes plug base, O RunddichtringO, plug body and stuffing-box, wherein plug base is welded on the flange end lid on housing, plug body and plug base adopt screw thread to add O and are tightly connected, cable and plug body adopt stuffing-box to seal, case inside is provided with the coil pipe for recycle heat, and housing is provided with the water-cooled input port and water-cooled delivery outlet that are connected respectively with the input of coil pipe and outfan.
Power input cable interface on middle shell of the present invention, control cable interface and all adopt the watertight connector of plug-in type, this watertight connector mainly includes plug base, O RunddichtringO, plug body and stuffing-box, wherein plug base is welded on the flange end lid on housing, plug body and plug base adopt screw thread to add O and are tightly connected, cable and plug body adopt stuffing-box to seal, namely the hold down gag extruding filler in stuffing-box is relied on, the plastic deformation produced by cable and filler reaches sealing effectiveness, the coil pipe for recycle heat it is provided with inside inventive shell, the copper pipe that heat switching performance can be adopted during use good realizes, housing is provided with the water-cooled input port and water-cooled delivery outlet that are connected respectively with the input of coil pipe and outfan, the stability that power supply self works can be ensured by carrying out heat exchange (water circulation) with extraneous water environment.
The main circuit of the welding machine being positioned at housing in the present invention includes the power circuit for powering to whole welding system and for the control circuit according to underwater environment Based Intelligent Control power circuit output parameter, wherein control circuit realizes based on DSP control chip, including DSP control chip and the parameter storage unit that is connected with DSP control chip respectively, the voltage sensor being connected with power circuit, the current sensor being connected with power circuit, the optimal control unit of the output current-voltage waveform being made up of multichannel DA unit and multichannel driver element, Water depth measuring sensor；Power circuit is made up of the rectification circuit being sequentially connected, inverter circuit, transforming circuit, secondary rectification circuit, outside electrical source of power is after power input cable interface inputs, enter power circuit, sequentially pass through rectification process, inversion process, transformation then through output after secondary rectification.
Being also provided with wire-feed motor driver element in control circuit in main circuit of the welding machine of the present invention, wire-feed motor driver element is connected with DSP control chip, thus when adopting flux-cored wire to weld, it is possible to coordinate semi-automatic wire-feed motor to use.
Control circuit in main circuit of the welding machine of the present invention is also provided with underwater control and display unit, this unit can adopt the display devices such as input equipment and liquid crystal display screen/charactron such as control keyboard to realize, for facilitating user to know the running parameter of device, duty, and the difference according to site operation environment is adjusted.
The present invention is additionally provided with ground and controls box, ground controls the prior embedded embedded OS of control chip in box, communication cable can be passed through communicate with Subsea Control Systems, obtain Underwater Welding parameter in real time, and preserve, operational diagnostics system simultaneously, can analytical data or these data of postmortem analysis in real time, ground controls box and is connected with the control circuit in the main circuit of the welding machine in housing, control box in ground is positioned at outside construction waters in use, such as, on deck, can realize this device current/voltage is regulated, the startup of display and power supply, the external control of the duties such as stopping, therefore, it is correspondingly provided with communication interface in control circuit in main circuit of the welding machine, communication interface is connected with DSP control chip, for realizing and the exchange of outside data.
The present invention also proposes a kind of to apply the method that above-mentioned Submersible type digital underwater wet welding power supply realizes stably exporting weldingvoltage electric current under 200m environment under water, it is characterized in that welding start time residing for construction environment the hydraulic pressure of the degree of depth, it is filled with noble gas in the housing of the source of welding current, carry out balance shell inside and outside pressure, the source of welding current is positioned at the bottom in welding process, according to the data that Water depth measuring sensor gathers, realize the optimization to the voltage current waveform that welding process exports by DSP control chip.
Of the present invention to the optimization to the voltage current waveform that welding process exports, refer to along with the increase of the welding depth of water, the output no-load voltage of this power supply can with water depth ratio, and floating voltage U is as follows with the Changing Pattern of depth of water h: as 0m≤h < 50m, U=75V；As 50m≤h≤100m, U=85V；As 100m≤h < 150m, U=95V；As 150m≤h≤200m, U=100V；To adapt to the requirement of underwater wet welding stability, welding parameter group can be set inside DSP control chip according to the depth of water on this basis, thus the underwater wet welding parameter realizing different water depth effectively selects, in combination with ground control system, being actually needed according to Underwater Welding, amendment parameter group, reaches the purpose of control flexibly.
The present invention is in use, owing to welding main point three parts, Igniting pattern, welding process, receipts arc process, in Igniting pattern, arcing voltage namely floating voltage increase with the depth of water and increase, present invention mode mainly through tabling look-up in use, with 20cm for interval, stores corresponding with arcing voltage for the depth of water, during actual welding, directly invoke this parameter；Transition between the starting the arc and welding, stores linear transitions curve, exponential curve, loaarithmic curve and four kinds of functions of revisable optional intermediate curve, welds workpiece according to difference and selects；In welding process, characteristic of welding power source is constant voltage, here reliability improved FOSM method is adopted, control the stability of voltage, wherein: assuming that Error(n) represent the difference of current sample magnitude and set-point, the consequent difference of single order is (1) formula, represents the difference between adjacent twice deviation:
Error(n)=Error(n)-Error(n-1) (1)
As Error(n) absolute value more than certain set-point time, it is believed that error is very big, and controller output is maximum, and Reverse Turning Control reduces error the soonest；
As Error(n) absolute value less than certain set-point time, it is believed that error is only small, by integral element reduce steady-state error；
Work as Error(n) more than zero, Error(n) increasing also greater than zero (or both of which is less than zero) then specification error, it was shown that originally reduce the method DeGrain of error, it should take higher control method；
Work as Error(n) more than zero, Error(n) (or the former is less than zero, the latter is more than zero) then specification error is reducing less than zero, illustrates that control method is effectively, and can basisRate of change revises control parameter, it is ensured that stablizing of output voltage；Receive arc process similar with Igniting pattern, store linear transitions curve, exponential curve, loaarithmic curve and four kinds of patterns of optional intermediate curve equally for different welding workpiece selections.
By the optimization to arcing voltage namely floating voltage in the present invention, it is possible to improve the reliability of the starting the arc, simultaneously when there is current interruption in welding process, the starting the arc is effectively ensured being normally carried out of welding job again rapidly.
Heretofore described housing can be selected for ordinary low-carbon steel, low-alloy steel, rustless steel or titanium alloy are made, for reaching sealing height, the target that anti-pressure ability is good, power circuit in housing is filtered by input rectifying, IGBT inverter, transformator and output rectification filter composition, and the optimal control to output current-voltage waveform and the control of welding process is realized by DSP control chip, the source of welding current can pass through DSP control chip and realize and the communication of peripheral control unit such as ground control box, and then pre-setting of welding machine output voltage can be realized according to the different depth of water, make the source of welding current can improve output no-load voltage along with the increase of the depth of water, improve the stability of welding and the reliability of striking, reduce the time exploring welding conditions, improve welding efficiency.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the structural representation of watertight connector in the present invention.
Accompanying drawing 3 is the theory diagram of main circuit of the welding machine in the present invention.
Accompanying drawing 4 is the left view of middle shell of the present invention.
Accompanying drawing labelling: housing 1, flange 2, flange end cap 3, power input cable interface 4, control cable interface 5, power output interface 6, water-cooled input port 7, water-cooled delivery outlet 8, ground controls box 9, air valve 10, plug base 11, O RunddichtringO 12, plug body 13, stuffing-box 14, DSP control chip 15, parameter storage unit 16, voltage sensor 17, current sensor 18, multichannel DA unit 19, multichannel driver element 20, optimal control unit 21, Water depth measuring sensor 22, rectification circuit 23, inverter circuit 24, transforming circuit 25, secondary rectification circuit 26, wire-feed motor driver element 27, underwater control and display unit 28, communication interface 29.
Detailed description of the invention:
Below in conjunction with drawings and Examples, the present invention is further illustrated.
The present invention proposes a kind of Submersible type digital underwater wet welding power supply, as shown in Figure 1, including housing 1 and the main circuit of the welding machine being positioned at housing 1, it is characterized in that the two ends of described housing 1 are provided with flange 2 and flange end cap 3, wherein flange 2 adopts overlap joint butt welding to be connected with housing 1, flange end cap 3 and flange 2 adopt the politef flange gasket of thickness 3mm to seal, housing 1 is additionally provided with air valve 10 and power input cable interface 4, control cable interface 5 and two power output interfaces 6, when actually used, two power output interfaces 6 are positioned on the flange end cap 3 of housing 1 side, and power input cable interface 4, control cable interface 5 and other interface is respectively positioned on the flange end cap 3 of housing 1 other end, flange 2 of the present invention and uniform 20 bolts hole of flange end cap 3 periphery, the two compact siro spinning technology, it is effectively improved the sealing of housing 1, its medium power input cable interface 4, control cable interface 5 and all adopt the watertight connector of plug-in type, as shown in Figure 2, this watertight connector mainly includes plug base 11, O RunddichtringO 12, plug body 13 and stuffing-box 14, wherein plug base 11 is welded on the flange end cap 3 on housing 1, plug body 13 and plug base 11 adopt screw thread to add O 12 and are tightly connected, cable and plug body 13 adopt stuffing-box 14 to seal, namely the hold down gag extruding filler in stuffing-box 14 is relied on, the plastic deformation produced by cable and filler reaches sealing effectiveness.
As shown in Figure 3, the main circuit of the welding machine being positioned at housing 1 in the present invention includes the power circuit for powering to whole welding system and for the control circuit according to underwater environment Based Intelligent Control power circuit output parameter, wherein control circuit realizes based on DSP control chip, including DSP control chip 15 and the parameter storage unit 16 that is connected with DSP control chip 15 respectively, the voltage sensor 17 being connected with power circuit, the current sensor 18 being connected with power circuit, the optimal control unit 21 of the output current-voltage waveform being made up of multichannel DA unit 19 and multichannel driver element 20, Water depth measuring sensor 22；Power circuit is made up of the rectification circuit 23 being sequentially connected, inverter circuit 24, transforming circuit 25, secondary rectification circuit 26, outside electrical source of power is after power input cable interface inputs, enter power circuit, sequentially pass through rectification process, inversion process, transformation then through output after secondary rectification.
Being also provided with wire-feed motor driver element 27 in control circuit in main circuit of the welding machine of the present invention, wire-feed motor driver element 27 is connected with DSP control chip 15, thus when adopting flux-cored wire to weld, it is possible to coordinate semi-automatic wire-feed motor to use.
Control circuit in main circuit of the welding machine of the present invention is also provided with the underwater control and the display unit 28 that are connected with DSP control chip 15, this unit can adopt the display devices such as input equipment and liquid crystal display screen/charactron such as control keyboard to realize, for facilitating user to know the running parameter of device, duty, and the difference according to site operation environment is adjusted.
The coil pipe for recycle heat it is provided with inside inventive shell 1, housing 1 is provided with the water-cooled input port 7 and water-cooled delivery outlet 8 that are connected respectively with the input of coil pipe and outfan, can ensure the stability that power supply self works by carrying out heat exchange (water circulation) with extraneous water environment.
The present invention is additionally provided with ground and controls box 9, ground controls box 9 and is connected with the control circuit in the main circuit of the welding machine in housing 1, control box in ground is positioned at outside construction waters in use, such as, on deck, the external control to duties such as the adjustment of this device current/voltage, display and the startup of power supply, stoppings can be realized, therefore, in the control circuit in main circuit of the welding machine, be correspondingly provided with communication interface 29, communication interface is connected with DSP control chip 15, for realizing and the exchange of outside data.
When the present invention uses, construction environment is within depth of water 60m, power supply can be placed in land, welded under water by diving welder, after the depth of water is more than 60m, diving power supply can be placed under water, by power input cable, the source of welding current is carried out power input, it may be achieved the Underwater Welding process of the maximum 200m depth of water.Before carrying out Underwater Welding, by the air valve being placed on housing 1, equipment is carried out pressure test, and the pressure of corresponding water environment after the pressure that it is internal is maintained at dive, to balance the pressure of housing 1 and construction external environment, ensure the stability of housing 1, corresponding construction location delivered to by the source of welding current by the form adopting lifting afterwards, welding starts, power circuit in the source of welding current is under the control of control circuit, the high-tension electricity of the three-phase 380v of externally input is converted to the required power supply of welding, and is that welder is powered by the two of shell one end power output interfaces；When adopting SMAW to carry out Underwater Welding, two power output interfaces 6 on welding power supply casing 1 can be directly used for the both positive and negative polarity of welding and weld；When adopting flux-cored wire welding, semi-automatic Underwater Welding wire-feed motor, except need to connecting positive negative output (i.e. power output interface 6), also needs the control socket connecting power supply namely to control cable interface 5, to realize the co-ordination of the source of welding current and wire-feed motor；Namely the water-cooling system that the present invention is equipped with is arranged on the coil pipe of case inside, can by with the coordinating of the device such as extraneous circulating pump, it is achieved heat exchange (water circulation) ensures the stability that power supply self works；Ground controls box 9 and can realize in a wired or wireless manner communicating with the DSP control chip 15 in housing 1 inner control circuit, and then complete data exchange, namely the current sensor in welding power supply casing 1, voltage sensor, data that Water depth measuring sensor gathers and the relevant information of other device duties can send the water surface, ground outside the water surface controls box 9 can send control instruction according to the above-mentioned information received to the diving source of welding current, this instruction is received post analysis by the DSP control chip 15 in welding power supply casing 1 and processes and make and perform action accordingly, and then the current/voltage realizing the source of welding current regulates, the startup of display and power supply, stop all being controlled box 9 control realization by the ground on deck.
Heretofore described housing 1 can be selected for ordinary low-carbon steel, low-alloy steel, rustless steel or titanium alloy are made, specifically can adopt internal diameter 400mm-600mm, wall thickness 15-25mm, the seamless steel pipe of length 600-900mm or titanium alloy tube, for reaching sealing height, the target that anti-pressure ability is good, power circuit in housing 1 is by input rectifying filter circuit, IGBT inverter, transformator and output rectifier and filter composition, and the optimal control to output current-voltage waveform and the control of welding process is realized by DSP control chip 15, the source of welding current can pass through DSP control chip 15 and realize and the communication of peripheral control unit such as ground control box 9, and then pre-setting of welding machine output voltage can be realized according to the different depth of water, make the source of welding current can improve output no-load voltage along with the increase of the depth of water, improve the stability of welding and the reliability of striking, reduce the time exploring welding conditions, improve welding efficiency.
The present invention is based on the welding main circuit of DSP, the main pulsewidth modulation realized by DSP control chip power supply, thermostatic control and waveform optimization, realize the output in real time to Underwater Welding voltage and welding current and adjust, refer to that the output no-load voltage of the source of welding current is effectively adjusted by the change based on the welding depth of water using the depth of water as the welding expert system of important parameter, such that it is able to improve ignition reliability and the arc stability of underwater wet welding, this submersed type power unit maximum output current 500A, output voltage 10V ~ 50V, floating voltage 50-110V is adjustable, the input and output of cable adopt stuffing-box etc. to seal, the cooling of power supply adopts and can carry out the water-cooling system of heat exchange with extraneous water environment, both the welding of underwater electrode arc welding can have been carried out, underwater robot can be carried again and carry out full-automatic Underwater Welding, there is water pressure resistance, good seal performance, reliability is high, the significant advantages such as output can be stablized under water under 200m environment.
Claims (8)
1. a Submersible type digital underwater wet welding power supply, including housing and the main circuit of the welding machine being positioned at housing, it is characterized in that the two ends of described housing are provided with flange and flange end cap, wherein flange adopts overlap joint butt welding to be connected with housing, flange end cap and flange adopt the politef flange gasket of thickness 3mm to seal, housing is provided with air valve and the power input cable interface being connected with main circuit of the welding machine respectively, controls cable interface, power output interface, shell is filled with noble gas, when degree of depth h is in the scope of 0m-100m, housing internal gas pressure value P0=0.2MPa, as degree of depth h > 100m, P0=0.2+0.01h(MPa), power input cable interface on housing, control cable interface all adopt the watertight connector of plug-in type, this watertight connector mainly includes plug base, O RunddichtringO, plug body and stuffing-box, wherein plug base is welded on the flange end lid on housing, plug body and plug base adopt screw thread to add O and are tightly connected, cable and plug body adopt stuffing-box to seal, case inside is provided with the coil pipe for recycle heat, and housing is provided with the water-cooled input port and water-cooled delivery outlet that are connected respectively with the input of coil pipe and outfan.
2. a kind of Submersible type digital underwater wet welding power supply according to claim 1, it is characterized in that the main circuit of the welding machine being positioned at housing includes the power circuit for powering to whole welding system and for the control circuit according to underwater environment Based Intelligent Control power circuit output parameter, wherein control circuit realizes based on DSP control chip, including DSP control chip and the parameter storage unit that is connected with DSP control chip respectively, the voltage sensor being connected with power circuit, the current sensor being connected with power circuit, the optimal control unit of the output current-voltage waveform being made up of multichannel DA unit and multichannel driver element, Water depth measuring sensor；Power circuit is made up of the rectification circuit being sequentially connected, inverter circuit, transforming circuit, secondary rectification circuit.
3. a kind of Submersible type digital underwater wet welding power supply according to claim 2, it is characterised in that being additionally provided with wire-feed motor driver element in the control circuit in main circuit of the welding machine, wire-feed motor driver element is connected with DSP control chip.
4. a kind of Submersible type digital underwater wet welding power supply according to claim 2, it is characterised in that the control circuit in main circuit of the welding machine is additionally provided with the underwater control and display unit that are connected with DSP control chip.
5. a kind of Submersible type digital underwater wet welding power supply according to claim 3, it is characterised in that being additionally provided with ground and control box, ground controls box and is connected through cable with the control circuit in the main circuit of the welding machine in housing.
6. a kind of Submersible type digital underwater wet welding power supply according to claim 2, it is characterised in that housing adopts internal diameter 400mm-600mm, wall thickness 15-25mm, the seamless steel pipe of length 600-900mm or titanium alloy tube.
7. the method that the Submersible type digital underwater wet welding power supply applied in claim 1 to 6 described in any one realizes stably exporting weldingvoltage electric current under 200m environment under water, it is characterized in that welding start time residing for construction environment the hydraulic pressure of the degree of depth, it is filled with noble gas in the housing of the source of welding current, carry out balance shell inside and outside pressure, the source of welding current is positioned at the bottom in welding process, according to the data that Water depth measuring sensor gathers, the optimization to the voltage current waveform that welding process exports is realized by DSP control chip, the wherein optimization to the voltage current waveform of welding process output, refer to along with the increase of welding depth of water h, the output no-load voltage U of this power supply has following Changing Pattern: as 0m≤h < 50m, U=75V；As 50m≤h < 100m, U=85V；As 100m≤h < 150m, U=95V；As 150m≤h≤200m, U=100V.
8. a kind of method realizing stably exporting weldingvoltage electric current under 200m environment under water according to claim 7, it is characterized in that adopting reliability improved FOSM method to control the stability of output voltage in welding process, wherein: assuming that Error(n) represent the difference of current sample magnitude and set-point, the consequent difference of single order is (1) formula, represent the difference between adjacent twice deviation
Error(n)=Error(n)-Error(n-1) (1)
As Error(n) absolute value more than certain set-point time, it is believed that error is very big, and controller output is maximum, and Reverse Turning Control reduces error the soonest；
As Error(n) absolute value less than certain set-point time, it is believed that error is only small, by integral element reduce steady-state error；
Work as Error(n) more than zero, Error(n) also greater than zero or both of which less than zero specification error increase, it was shown that originally reduction error method DeGrain, it should take higher control method；
Work as Error(n) more than zero, Error(n) less than zero or the former is less than zero, the latter is more than zero, then specification error is reducing, and illustrates that control method is effectively, according to Error(n) rate of change revises control parameter, it is ensured that stablizing of output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289768.6A CN102773582B (en) | 2012-08-15 | 2012-08-15 | Submersible type digital underwater wet welding power supply and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289768.6A CN102773582B (en) | 2012-08-15 | 2012-08-15 | Submersible type digital underwater wet welding power supply and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102773582A CN102773582A (en) | 2012-11-14 |
| CN102773582B true CN102773582B (en) | 2016-06-29 |
Family
ID=47118809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210289768.6A Expired - Fee Related CN102773582B (en) | 2012-08-15 | 2012-08-15 | Submersible type digital underwater wet welding power supply and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102773582B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706924B (en) * | 2013-12-20 | 2016-02-24 | 华南理工大学 | A kind of intelligent arc welding robot diving wire-feed motor |
| CN109681163B (en) * | 2018-05-23 | 2021-08-17 | 中国石油化工股份有限公司 | Water injection well throwing and fishing type underground power generation device and method |
| CN111175560B (en) * | 2019-12-25 | 2021-10-08 | 杭州新世宝电动转向系统有限公司 | Method for quickly adjusting welding voltage of Hall torque sensor magnetic ring in EPS (electric power steering) |
| CN113452255B (en) | 2021-06-03 | 2022-08-19 | 江苏科技大学 | Split type multifunctional underwater arc welding power supply and working method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632950A (en) * | 1969-11-13 | 1972-01-04 | Anna Welding Corp | Method and apparatus for underwater arc welding |
| CN86206805U (en) * | 1986-09-08 | 1987-12-09 | 武汉市江岸区长城五金电器厂 | Multi-function light ac welder |
| US5736711A (en) * | 1996-01-12 | 1998-04-07 | Broco, Inc. | Underwater arc-welding apparatus |
| CN100411797C (en) * | 2006-03-03 | 2008-08-20 | 华南理工大学 | Semi-automatic underwater welder with local dryness |
| CN201330715Y (en) * | 2009-01-16 | 2009-10-21 | 济宁安泰矿山设备制造有限公司 | Built-in type mining explosion suppression type submersible pump |
-
2012
- 2012-08-15 CN CN201210289768.6A patent/CN102773582B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102773582A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773582B (en) | Submersible type digital underwater wet welding power supply and application thereof | |
| CN107524653A (en) | A kind of hydraulic system of deep ocean work type underwater robot | |
| CN103712907B (en) | The on-the-spot corrosion electrochemical test system in a kind of deep-sea and method of testing thereof | |
| CN103706927A (en) | Multifunctional welding system of underwater welding robot | |
| CN207648272U (en) | Sealing device for deep-sea simulated pressure test cylinder watertight penetrating cable | |
| CN100411797C (en) | Semi-automatic underwater welder with local dryness | |
| CN102825366A (en) | Underground welding wire feeding device and application thereof | |
| CN116174860A (en) | Electromagnetic auxiliary K-TIG multi-position automatic welding system and control method | |
| CN109723432B (en) | Underground detection device control and charging system | |
| CN103962692A (en) | Method for welding control rod drive mechanism of nuclear power station and tube base of pressure vessel top cover | |
| CN108971717A (en) | A kind of the electric arc air bag auxiliary steady experimental device and its application method of wet process welding | |
| CN113452255A (en) | Split type multifunctional underwater arc welding power supply and working method thereof | |
| CN102661271B (en) | Rodless pump for single-core oil-submersible cable linear motor | |
| CN113618195B (en) | Underwater all-position local dry pulse MIG welding method | |
| CN103273172B (en) | Underwater wet process welding wire feeding mechanism of flux-cored wire | |
| CN110202259A (en) | Underwater laser increases material prosthetic device | |
| CN202884356U (en) | Protective sleeve type electric heating water lifting pipe | |
| CN103174642A (en) | High-power stepping motor screw pump of single-core submersible cable | |
| CN203936507U (en) | Portable underwater welding wire-feed motor | |
| CN113529092A (en) | Autonomous inspection method and system for submarine pipeline cathodic protection potential detection | |
| CN102825373A (en) | Resistor spot welding machine and welding operation method thereof | |
| CN211352034U (en) | Deep water power supply device | |
| CN203109472U (en) | Robot welding system | |
| CN112366531B (en) | Submarine operation distribution device | |
| CN110936100A (en) | Portable underwater welding repair device and welding repair system |
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 |
Granted publication date: 20160629 |