CN205254308U - Manual welding machine arc voltage's intellectual detection system device - Google Patents
Manual welding machine arc voltage's intellectual detection system device Download PDFInfo
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- CN205254308U CN205254308U CN201520798338.6U CN201520798338U CN205254308U CN 205254308 U CN205254308 U CN 205254308U CN 201520798338 U CN201520798338 U CN 201520798338U CN 205254308 U CN205254308 U CN 205254308U
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- welding machine
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- manual welding
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- arc voltage
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Abstract
The utility model discloses a manual welding machine arc voltage's intellectual detection system device, it includes current detection circuit, voltage detection circuit, controller, first register, current detection circuit is arranged in detecting welding machine work output circuit's electric current and exporting the controller, voltage detection circuit is used for detecting the output voltage of welding machine power and exports the controller, first register is used for depositing manual welding machine output circuit cable resistance, the controller is used for calculating and exporting manual welding machine arc voltage, U7=U1 -RHI, U7 are manual welding machine arc voltage, and U1 is the output voltage of welding machine power, and I is the electric current among the welding machine work output circuit, and RH is the manual welding machine output circuit cable resistance in the first register. The utility model discloses a manual welding machine arc voltage's intellectual detection system device can detect in real time, accurately and obtain manual welding machine arc voltage.
Description
Technical field
The utility model relates to welding machine, particularly a kind of intelligent detection device of manual welding machine arc voltage.
Background technology
Manual welding machine work welding circuit forms as shown in Figure 1, comprise welding machine electric power 1, welding cable 2, ground wire cable 3,Electrode holders 4, welding rod 5, workpiece 6.
The external devices of manual welding machine work output loop is by welding cable 2, electrode holders 4, welding rod 5, workpiece 6, ground wireCable 3 forms, and these external devices itself exist resistance, and the external devices resistance sum of welding machine work output loop is RH，RH=R2+R4+R5+R6+R3, R2 is welding cable 2 resistance, and R4 is electrode holders 4 resistance, and R5 is welding rod 5 resistance, R6For workpiece 6 resistance, R3 is ground wire cable 3 resistance. In manual welding machine work, welding machine electric power 1 provides welding arc 7Electric energy, welding current is through welding cable 2, electrode holders 4, welding rod 5, workpiece 6, ground wire cable 3, and electric current flows through respectivelyDevice produces voltage and is respectively welding cable voltage U2, electrode holders voltage U4, welding rod voltage U5, workpiece voltage U6,Line voltage cable U3, the voltage sum U of the external devices of welding machine work output loopH＝U2+U4+U5+U6+U3. If welding electricityOn arc 7, voltage is U7, U7With welding machine output voltage U1Between pass be: U1＝UH+U7。
At present, manual welding machine is all by the output voltage U of sampling welding machine electric power1, adopt Voltage Feedback mode to control electricityArc. Due in the time that welding machine work output loop has electric current to flow through, the output voltage U of welding machine electric power1Power on welding arc 7Press U7Machine there are differences, and can cause electric arc control inaccuracy.
Because manual welding machine there will be the phenomenon of output short-circuit in welding process, for fear of cause welding rod and work because of short circuitThe adhesion phenomenon of part occurs, and has increased the functions such as thrust, hot striking, adhesive-proof strip when welding machine design. It is right that these functions needWelding machine short-circuit condition detects, and short-circuit condition detection mode is sampling welding machine electric power output voltage U at present1Value, rootAccording to U1Size judge, work as U1During lower than lower voltage limit K value, welding machine judges output short-circuit. Due to welding currentExistence, on welding cable 2 and ground wire cable 3, there is respectively voltage U2，U3, because of 4 resistance R 4 of electrode holders in reality,The resistance of welding rod 5 resistance R 5 and workpiece 6 resistance R 6 is all very little, can ignore, U1≈U2+U3+U7. Along with weldingThe length of cable 2, ground wire cable 3 is elongated, U in output short-circuit process2+U3Value can be greater than lower voltage limit K value, thisEven if time U7＝0V，U1Also be greater than lower voltage limit K value, welding machine None-identified short-circuit condition, causes part welding function to be lostEffect.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of intelligent detection device of manual welding machine arc voltage, can be realTime, accurately detect and obtain manual welding machine arc voltage.
For solving the problems of the technologies described above, the intelligent detection device of the manual welding machine arc voltage that the utility model provides, its bagDraw together current detection circuit, voltage detecting circuit, controller, the first register;
Described current detection circuit, for detection of the electric current in welding machine work output loop and output to described controller;
Described voltage detecting circuit, for detection of the output voltage of welding machine electric power and output to described controller;
Described the first register, for depositing manual welding machine output loop cable resistance;
Described controller, for calculating and export manual welding machine arc voltage;
U7＝U1-RH*I，U7For manual welding machine arc voltage, U1For the output voltage of welding machine electric power, I is welding machine work outputElectric current in loop, RHIt is the manual welding machine output loop cable resistance in the first register.
Preferably, the intelligent detection device of described manual welding machine arc voltage, also comprises the second register;
Described controller, for calculating and export manual welding machine arc voltage to described the second register.
Preferably, described controller, when the output voltage of welding machine electric power produces transition from high to low, calculates output welding machinePower supply output loop resistance RHTo described the first register; RH＝U1L/IL,U1LThe output of the welding machine electric power while end for transitionVoltage, ILElectric current in welding machine work output loop while end for transition.
Preferably, if the output voltage of welding machine electric power by operating voltage UOBecome lower than the first threshold voltage K1, welding machineThe output voltage of power supply produces transition from high to low, K1＜UO*4/5。
Preferably, K1For UO/2、UO/ 3 or UO/4。
Preferably, if the differential value of the output voltage of welding machine electric power is less than-5000 volts/seconds, the output electricity of welding machine electric powerPressure produces transition from high to low.
Preferably, described controller, works as U7＜K2,K2Be the second threshold voltage, K2≤K1, control manual welding machine and increaseOutput current.
Preferably, described controller, works as U7Lower than the 3rd threshold voltage K3Duration be greater than setting-up time t, control manualWelding machine reduces output current, K3≤K1。
Preferably, 0.3 second < t < 3.0 seconds.
Preferably, t is 0.7 second, 1 second or 2 seconds.
The intelligent detection device of manual welding machine arc voltage of the present utility model, can be according to the welding machine work output of Real-time CollectionElectric current in loop, the output voltage of welding machine electric power, in real time, accurately detect and obtain manual welding machine arc voltage. This realityWith the intelligent detection device of novel manual welding machine arc voltage, in the time of change of external conditions, can obtain reality by intellectual analysisBorder welding arc voltage, because this manual welding machine arc voltage is real-time and accurate, can be based on this manual welding machine arc voltageAccurately control arc shape, be subject to welding cable, earth cable, workpiece thereby reduce arc shape in welding machine welding processEtc. the impact of external factor, improve the stability of welding machine welding process.
Brief description of the drawings
In order to be illustrated more clearly in the technical solution of the utility model, below the accompanying drawing of the required use of the utility model is doneSimple introduction, apparently, the accompanying drawing in the following describes is only embodiment more of the present utility model, for thisField those of ordinary skill, is not paying under the prerequisite of creative work, can also obtain other according to these accompanying drawingsAccompanying drawing.
Fig. 1 is manual welding machine work welding circuit schematic diagram;
Fig. 2 is the intelligent detection device one example structure figure of manual welding machine arc voltage of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical scheme in the utility model is carried out to clear, complete description, obviously, institute retouchesThe embodiment stating is a part of embodiment of the present utility model, instead of whole embodiment. Based in the utility modelEmbodiment, all other enforcements that those of ordinary skill in the art obtain under the prerequisite of not making creative workExample, all belongs to the scope that the utility model is protected.
Embodiment mono-
The intelligent detection device of manual welding machine arc voltage, comprise current detection circuit, voltage detecting circuit, controller,The first register;
Described current detection circuit, for detection of the electric current in welding machine work output loop and output to described controller;
Described voltage detecting circuit, for detection of the output voltage of welding machine electric power and output to described controller;
Described the first register, for depositing manual welding machine output loop cable resistance;
Described controller, for calculating and export manual welding machine arc voltage;
U7＝U1-RH*I，U7For manual welding machine arc voltage, U1For the output voltage of welding machine electric power, I is welding machine work outputElectric current in loop, RHIt is the manual welding machine output loop cable resistance in the first register.
Preferably, the intelligent detection device of described manual welding machine arc voltage, also comprises the second register;
Described controller, for calculating and export manual welding machine arc voltage to described the second register.
According to manual welding machine output loop cable resistance RH, and electric current I in welding machine work output loop, pass throughUH＝RH* I, can calculate the voltage sum U of the external devices of welding machine work output loopH. Pass through U7＝U1-UH, canCalculate manual welding machine arc voltage U7。
The intelligent detection device of the manual welding machine arc voltage of embodiment mono-, can export back according to the welding machine work of Real-time CollectionElectric current in road, the output voltage of welding machine electric power, in real time, accurately detect and obtain manual welding machine arc voltage. EmbodimentThe intelligent detection device of one manual welding machine arc voltage, in the time of change of external conditions, can obtain actual weldering by intellectual analysisConnect arc voltage, because this manual welding machine arc voltage is real-time and accurate, can be accurate based on this manual welding machine arc voltageArc shape is controlled on ground, is subject to outside welding cable, earth cable, workpiece etc. thereby reduce arc shape in welding machine welding processThe impact of portion's factor, the stability of raising welding machine welding process.
Embodiment bis-
The intelligent detection device of the manual welding machine arc voltage based on embodiment mono-, described controller, defeated when welding machine electric powerGo out voltage and produce transition from high to low, calculate output welding machine electric power output loop resistance RHTo described the first register; RH＝U1L/IL,U1LThe output voltage of the welding machine electric power while end for transition, ILIn welding machine work output loop while end for transitionElectric current.
In machine initial arc process and welding process, all there will be the of short duration output short-circuit phenomenon of welding machine, now arc voltageU7L=0, now the output voltage of welding machine electric power produces meeting transition from high to low, the output electricity of welding machine electric power when transition finishesPress as U1L, the voltage sum of the external devices of welding machine work output loop when transition finishes is UHL, when transition finishesElectric current in welding machine work output loop is IL, due to U1L＝U7L+UHL，U7L=0, so UHL＝U1LSo, RH＝UHL/IL＝U1L/IL。
The intelligent detection device of the manual welding machine arc voltage of embodiment bis-, utilizes in machine initial arc process and welding process,There is the welding machine actual output voltage U sampling in of short duration output short-circuit duration in welding machine1LWith short circuit current IL, calculateGo out manual welding machine output loop cable resistance RH, and store in the first register. The manual welding machine electric arc electricity of embodiment bis-The intelligent detection device of pressing, in machine initial arc process and welding process, can calculate manual welding machine output loop automaticallyCable resistance RHAnd be updated in register, can upgrade automatically, in real time, exactly manual welding machine output loop cable resistance,Thereby can in real time, accurately detect and obtain manual welding machine arc voltage, be convenient to accurately control electric arc.
Embodiment tri-
The intelligent detection device of the manual welding machine arc voltage based on embodiment bis-, if the output voltage of welding machine electric power is by workMake voltage UOBecome lower than the first threshold voltage K1, the output voltage of welding machine electric power produces transition from high to low, K1＜UO* 4/5, for example K1For UO/2、UO/ 3 or UO/4。
The intelligent detection device of the manual welding machine arc voltage of embodiment tri-, when the output voltage of welding machine electric power is by operating voltageUOBecome lower than the first threshold voltage K1, the output voltage that controller is judged as welding machine electric power produces transition from high to low,The output voltage U of the welding machine electric power while end according to transition1L, start to calculate renewal welding machine electric power output loop resistance RH。
Embodiment tetra-
The intelligent detection device of the manual welding machine arc voltage based on embodiment bis-, if the output voltage of welding machine electric power is micro-Score value is less than-5000 volts/seconds, and the output voltage of welding machine electric power produces transition from high to low.
The intelligent detection device of the manual welding machine arc voltage of embodiment tetra-, when the output voltage differential value of welding machine electric power is less than-5000 volts/seconds, the output voltage that controller is judged as welding machine electric power produces transition from high to low, while end according to transitionThe output voltage U of welding machine electric power1L, start to calculate renewal welding machine electric power output loop resistance RH。
Embodiment five
The intelligent detection device of the manual welding machine arc voltage based on embodiment mono-, described controller, works as U7＜K2,K2ForThe second threshold voltage, K2≤K1, control manual welding machine and increase output current.
The intelligent detection device of the manual welding machine arc voltage of embodiment five, while welding as manual arc, welding machine external characteristicsFor the additional Arc control of constant-current characteristics. Under normal arc voltage, be constant-current characteristics, make welding current not with arc lengthChange, ensure that specification is stable, arc stability is flexible; In the time that the too short arc voltage of arc length is too low, welding current is with electric arcThe reduction of voltage and increasing, makes electric arc arc length automatically recover (being so-called Arc) with foot, makes arc stability, thrustSize is independent adjustable. The intelligent detection device of the manual welding machine arc voltage of embodiment five, by arc voltage in real timeDetect, control the output current of welding machine, thereby make the Arc control of manual electric arc welding there is very strong adaptive ability.
Embodiment six
The intelligent detection device of the manual welding machine arc voltage based on embodiment mono-, described controller, works as U7Lower than the 3rdVoltage limit K3Duration be greater than setting-up time t, control manual welding machine and reduce output current, K3≤K1。
Preferably, 0.3 second < t < 3.0 seconds. For example, t is 0.7 second, 1 second or 2 seconds.
The intelligent detection device of the manual welding machine arc voltage of embodiment six, in the time that arc voltage is lower for a long time, judgesBe the long-time short circuit of welding rod, control manual welding machine and reduce output current, in case weldbonding bar.
The foregoing is only preferred embodiment of the present utility model, in order to limit the utility model, not all in this realityWithin novel spirit and principle, any amendment of making, be equal to replacement, improvement etc., all should be included in this practicality newWithin the scope of type protection.
Claims (10)
1. an intelligent detection device for manual welding machine arc voltage, is characterized in that, comprises current detection circuit, voltage detecting circuit, controller, the first register;
The same current detection circuit of described controller, voltage detecting circuit, the first register connect respectively;
Described current detection circuit, for detection of the electric current in welding machine work output loop and output to described controller;
Described voltage detecting circuit, for detection of the output voltage of welding machine electric power and output to described controller;
Described the first register, for depositing manual welding machine output loop cable resistance;
Described controller, for calculating and export manual welding machine arc voltage;
U7＝U1-RH*I，U7For manual welding machine arc voltage, U1For the output voltage of welding machine electric power, I is the electric current in welding machine work output loop, RHIt is the manual welding machine output loop cable resistance in the first register.
2. the intelligent detection device of manual welding machine arc voltage according to claim 1, is characterized in that,
The intelligent detection device of described manual welding machine arc voltage, also comprises the second register;
Described controller, for calculating and export manual welding machine arc voltage to described the second register.
3. the intelligent detection device of manual welding machine arc voltage according to claim 1, is characterized in that,
Described controller, when the output voltage of welding machine electric power produces transition from high to low, calculates output welding machine electric power output loop resistance RHTo described the first register; RH＝U1L/IL,U1LThe output voltage of the welding machine electric power while end for transition, ILElectric current in welding machine work output loop while end for transition.
4. the intelligent detection device of manual welding machine arc voltage according to claim 3, is characterized in that,
If the output voltage of welding machine electric power is by operating voltage UOBecome lower than the first threshold voltage K1, the output voltage of welding machine electric power produces transition from high to low, K1＜UO*4/5。
5. the intelligent detection device of manual welding machine arc voltage according to claim 4, is characterized in that,
K1For UO/2、UO/ 3 or UO/4。
6. the intelligent detection device of manual welding machine arc voltage according to claim 3, is characterized in that,
If the differential value of the output voltage of welding machine electric power is less than-5000 volts/seconds, the output voltage of welding machine electric power produces transition from high to low.
7. the intelligent detection device of manual welding machine arc voltage according to claim 1, is characterized in that,
Described controller, works as U7＜K2,K2Be the second threshold voltage, K2≤K1, control manual welding machine and increase output current.
8. the intelligent detection device of manual welding machine arc voltage according to claim 1, is characterized in that,
Described controller, works as U7Lower than the 3rd threshold voltage K3Duration be greater than setting-up time t, control manual welding machine and reduce output current, K3≤K1。
9. the intelligent detection device of manual welding machine arc voltage according to claim 8, is characterized in that,
0.3 second < t < 3.0 seconds.
10. the intelligent detection device of manual welding machine arc voltage according to claim 8, is characterized in that,
T is 0.7 second, 1 second or 2 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798338.6U CN205254308U (en) | 2015-10-15 | 2015-10-15 | Manual welding machine arc voltage's intellectual detection system device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798338.6U CN205254308U (en) | 2015-10-15 | 2015-10-15 | Manual welding machine arc voltage's intellectual detection system device |
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| CN205254308U true CN205254308U (en) | 2016-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171190A (en) * | 2015-10-15 | 2015-12-23 | 上海通用重工集团有限公司 | Intelligent detecting device for arc voltage of manual welding machine |
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- 2015-10-15 CN CN201520798338.6U patent/CN205254308U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171190A (en) * | 2015-10-15 | 2015-12-23 | 上海通用重工集团有限公司 | Intelligent detecting device for arc voltage of manual welding machine |
| CN105171190B (en) * | 2015-10-15 | 2017-06-16 | 上海通用重工集团有限公司 | The intelligent detection device of manual welding machine arc voltage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20170616 |