CN102189312B - Control system and method for electric welding and generating dual-purpose machine with temperature control - Google Patents
Control system and method for electric welding and generating dual-purpose machine with temperature control Download PDFInfo
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- CN102189312B CN102189312B CN201110067339.XA CN201110067339A CN102189312B CN 102189312 B CN102189312 B CN 102189312B CN 201110067339 A CN201110067339 A CN 201110067339A CN 102189312 B CN102189312 B CN 102189312B
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Abstract
The invention relates to an electric welding and generating dual-purpose machine control system with temperature control, comprising a motor system, a rectifier bridge module and a control module, wherein the motor system comprises a motor auxiliary winding, a motor rotor winding, a temperature sensor and a motor arc welding winding, the temperature sensor is embedded in the middle of the motor arc welding winding, the motor arc welding winding is output to the rectifier bridge module, a low-voltage alternating current generated by the dual-purpose machine is converted into a low-voltage direct current to be supplied to a welding terminal, an alternating current generated by the motor auxiliary winding is rectified into a direct current to be supplied to the motor rotor winding, and the control module is used for receiving a signal input by the temperature sensor and adjusting a rotor exciting current according to variation of the signal of the temperature sensor, thus the maximum output electric welding current is changed.
Description
Technical field
The present invention relates to electric welding electricity generation two-purpose machine control system, the electric welding electricity generation two-purpose machine control system particularly being driven by gasoline engine or diesel motor.
Background technology
For a long time, many occasions such as industrial production and construction all be unable to do without welding and lighting apparatus, when this provides the wide market demand for electric welding electricity generation two-purpose machine to a certain extent, also its product reliability, ease-to-operate etc. are had higher requirement.
The electric welding electricity generation two-purpose machine occurring is in the market due to the particularity of its motor winding, and the occasion of long-time continuous welding easily causes winding temperature rise too high, thereby affects even directly motor damage of electrical machinery life.
For fear of damaging motor, in the process of using machine, needed to strictly observe in the past cyclic duration factor equal time restriction requirement, operating process is loaded down with trivial details to be required higher to operating personnel simultaneously.
The patent No. is that 201020054157 Chinese patent discloses a kind of dual-purpose machine of gasoline electricity generation and electric welding with temperature protection, comprise support, and the engine, silencer and the motor that are installed on support, it is characterized in that: also include temperature sensor, temperature sensor is arranged at the stator arc-welding winding inside of motor, detects arc-welding winding temperature; Arc-welding winding is connected with electric welding lead-out terminal by rectifier bridge, and controller is connected and accepts temperature signal with temperature sensor on the one hand, controls on the other hand output and the cut-out of electric welding lead-out terminal according to temperature signal.The basic functional principle of this temperature protection formula electric welding electricity generation two-purpose machine is for to switch on or off solder terminal according to motor arc-welding winding temperature.Like this, alleviated to a certain extent the requirement to operating personnel, but whole machine still can only be interrupted work all the time.
Summary of the invention
The object of the invention is to overcome the defect of prior art, for workman, in using electric welding electricity generation two-purpose machine process, easily ignore the feature that require weld interval, temperature controlled electric welding electricity generation two-purpose machine control system and the method be with is provided, by temperature sensor, effectively realize temperature and maximum weld electric current is interrelated, it is special in the situation that multiple thickness welding rod welds simultaneously, can alternately uninterruptedly weld by thickness welding rod, reach when controlling electric machine temperature rise, make dual-purpose machine service efficiency reach maximization.
A goal of the invention of the present invention is achieved through the following technical solutions, a kind ofly be with temperature controlled electric welding electricity generation two-purpose machine control method, it is characterized in that: the method comprises: temperature sensor is imbedded in the middle of motor arc-welding winding, control module, according to the variation of temperature sensor signal, changes maximum output electric welding electric current thereby adjust rotor excitation current size.
Describedly with temperature controlled electric welding electricity generation two-purpose machine control method, further comprise: described control module is set maximum output electric welding current reference value according to the variation of temperature sensor signal, according to maximum output electric welding current reference value, control rotor winding exciting current, change the maximum electric welding electric current of motor.
As a further improvement on the present invention, the method can realize the maximum electric welding electric current of output and raises and present different dropping characteristics with arc-welding winding temperature by changing functional relation between maximum electric welding current limit and temperature sensor input signal.
Being set to of described maximum electric welding current limit: when temperature sensor detects motor arc-welding winding temperature higher than certain threshold values, maximum electric welding electric current raises and linear reduction with temperature, just can return to maximum set value until motor temperature drops to zone of reasonableness.
Being set to of described maximum electric welding current limit: when motor arc-welding winding temperature being detected higher than certain threshold values, non-linear reduction just can return to maximum set value until motor temperature drops to zone of reasonableness to maximum electric welding electric current with temperature rising.
Being set to of described maximum electric welding current limit: when motor arc-welding winding temperature being detected higher than certain threshold values, maximum electric welding electric current is limited to 1/4th left and right of normal condition maximum output current, until motor temperature drops to zone of reasonableness, just can return to maximum set value.
Another goal of the invention of the present invention is achieved through the following technical solutions, a kind ofly be with temperature controlled electric welding electricity generation two-purpose machine control system, comprise electric system, rectifier bridge module and control module, wherein electric system comprises: motor assist winding, rotor winding, temperature sensor and motor arc-welding winding, temperature sensor is imbedded in the middle of motor arc-welding winding, motor arc-welding winding exports rectifier bridge module to, the low-voltage alternating-current that dual-purpose machine is sent is converted to low-voltage direct and supplies with solder terminal, motor assist winding send alternating current after rectification for becoming direct current, supply with rotor winding, described control module, for receiving the signal of temperature sensor input, according to the variation of temperature sensor signal, thereby adjust rotor excitation current size and change maximum output electric welding electric current.
As a further improvement on the present invention, described control module is further used for, according to the variation of temperature sensor signal, set maximum output electric welding current reference value, according to maximum output electric welding current reference value, control rotor winding exciting current, change the maximum output of motor electric welding electric current.
Described control module comprises:
Current detecting wire, is connected on electric welding current output terminal, for detection of maximum output electric welding electric current;
Electric welding current measurement circuit, for measuring the electric welding electric current of current detecting wire, and is converted to relatively control module of voltage signal input system by electric welding current signal;
Maximum electric welding current reference value generative circuit, for moment detected temperatures signal, when temperature signal value surpasses the threshold values of setting, generates temperature variant maximum weld current reference value signal, exports systematic comparison control module to;
Systematic comparison control module, compares current electric welding current signal and electric welding current reference value signal, and when electric welding current signal is larger than electric welding current reference value signal, output low level signal is to on-off circuit module;
On-off circuit module: accept the signal of systematic comparison control module output, control rectifier bridge and rotor winding between connecting and disconnecting of the circuit, and then adjust rotor excitation current size;
Current detecting wire is connected on electric welding current output terminal, electric welding current measurement circuit is connected with current detecting wire output end, maximum electric welding current reference value generative circuit is connected with temperature sensor output, the positive-negative input end of systematic comparison control module is received respectively in the output of maximum electric welding current reference value generative circuit and electric welding current measurement circuit, the input of the output termination on-off circuit module of systematic comparison control module, the negative terminal of the output of on-off circuit module and rotor winding joins, the anode of rotor winding is connected with the anode of electric capacity, at rotor winding two ends reverse parallel connection fly-wheel diode, rectifier bridge input connects the two ends of motor assist winding, the output two ends of rectifier bridge are connected respectively with electric capacity positive and negative terminal.
Described on-off circuit module can be: switch tube driving circuit and power switch pipe, consist of, the input of the output termination switch tube driving circuit of systematic comparison control module, the opening and turn-offing of the control end of the output termination power switch pipe of switch tube driving circuit power ratio control switching tube, power switch pipe source electrode welding system ground wire, the negative terminal of drain electrode and rotor winding joins.
Described on-off circuit module can be also triode, and the base stage welding system of triode is the output of control module relatively, and the negative terminal of the colelctor electrode of triode and rotor winding joins, transistor emitter welding system ground wire.
The invention has the beneficial effects as follows: in the situation that not needing manual intervention, control module is interrelated by motor arc-welding winding temperature and maximum weld electric current by temperature sensor, the occasion of particularly welding at multiple thickness welding rod, can realize alternately uninterrupted welding of thickness, reach when controlling electric machine temperature rise, make dual-purpose machine service efficiency reach maximization.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 electric welding electricity generation two-purpose machine control system block diagram;
Fig. 2 a is that the maximum electric welding current reference value of the embodiment of the present invention 1 generative circuit typical case output voltage signal is with the first characteristic curve of input temp signal intensity;
Fig. 2 b is that the maximum electric welding current reference value of the embodiment of the present invention 1 generative circuit typical case output voltage signal is with the second characteristic curve of input temp signal intensity;
Fig. 2 c is that the maximum electric welding current reference value of the embodiment of the present invention 1 generative circuit typical case output voltage signal is with the third characteristic curve of input temp signal intensity;
Fig. 2 d is that the maximum electric welding current reference value of the embodiment of the present invention 1 generative circuit typical case output voltage signal is with the 4th specific character curve of input temp signal intensity;
Fig. 3 is the embodiment of the present invention 2 electric welding electricity generation two-purpose machine control system block diagrams;
In figure: 1-electric system, 2-rectifier bridge module, 3-is control module relatively, 11-motor assist winding, 12-rotor winding, 13-temperature sensor, 14-motor arc-welding winding, 30-triode, 31-current detecting wire, 32-electric welding current measurement circuit 33, maximum electric welding current reference value generative circuit, 34-systematic comparison control module, 35-rectifier bridge, 36-switch tube driving circuit, 37-electric capacity, 38-power switch pipe, 39-fly-wheel diode.
The specific embodiment
Below in conjunction with embodiment, be described further:
As shown in Figure 1, electric welding electricity generation two-purpose machine control system is comprised of electric system 1, rectifier bridge module 2 and 3 three parts of control module, wherein electric system 1 comprises: motor assist winding 11, rotor winding 12, temperature sensor 13 and motor arc-welding winding 14, temperature sensor 13 is imbedded in the middle of motor arc-welding winding 14, motor arc-welding winding 14 exports rectifier bridge module 2 to, and the low-voltage alternating-current that dual-purpose machine is sent is converted to low-voltage direct and supplies with solder terminal.
Motor assist winding 11 sends alternating current to be changed direct current into through rectifier bridge 35 and electric capacity 37 and offers rotor winding 12 through power switch pipe 38.When power switch pipe 38 is opened, rotor winding exciting current rises; When power switch pipe 38 turn-offs, rotor excitation current declines.Because rotor winding 12 is inductance characteristic, at power switch pipe 38 shutdown moments, fly-wheel diode 39 provides winding current continuous current circuit.Power switch pipe 38 is opened or is turn-offed and controlled by switch tube driving circuit 36 outputs.
The present embodiment and upper example are basic identical, and difference is that the on-off circuit module that switch tube driving circuit 36 and power switch pipe 38 form is substituted by triode 30.As shown in Figure 3, the base stage welding system of triode 30 is the output of control module 34 relatively, and the negative terminal of the colelctor electrode of triode and rotor winding 12 joins, the grounded emitter of triode 30.
A temperature controlled electric welding electricity generation two-purpose machine control method, the method comprises: temperature sensor is imbedded in the middle of motor arc-welding winding, control module, according to the variation of temperature sensor signal, changes maximum output electric welding current limit.
Embodiment 4
A temperature controlled electric welding electricity generation two-purpose machine control method, the method comprises:
1) temperature sensor is imbedded in the middle of motor arc-welding winding, and control module, according to the variation of temperature sensor signal, changes maximum output electric welding current limit.
2) control module, according to described maximum output electric welding current limit, is controlled rotor winding exciting current, makes the maximum electric welding current limit of maximum electric welding current following of motor output.
Embodiment 5
As shown in Figure 2 a, being set to of maximum electric welding current limit: when temperature sensor detects motor arc-welding winding temperature higher than certain threshold values, maximum electric welding electric current raises and linear reduction with temperature, until motor temperature drops to zone of reasonableness, just can return to maximum set value.
Embodiment 6
As shown in Fig. 2 b and 2d, being set to of maximum electric welding current limit: when motor arc-welding winding temperature being detected higher than certain threshold values, maximum electric welding electric current raises with temperature and non-linear reduction just can return to maximum set value until motor temperature drops to zone of reasonableness.
Embodiment 7
As shown in Figure 2 c, being set to of maximum electric welding current limit: when motor arc-welding winding temperature being detected higher than certain threshold values, maximum electric welding electric current is limited to 1/4th left and right of normal condition maximum output current, until motor temperature drops to zone of reasonableness, just can return to maximum set value.
Claims (8)
1. be with temperature controlled electric welding electricity generation two-purpose machine control system for one kind, comprise electric system, rectifier bridge module and control module, wherein electric system comprises: motor assist winding, rotor winding, temperature sensor and motor arc-welding winding, temperature sensor is imbedded in the middle of motor arc-welding winding, motor arc-welding winding exports rectifier bridge module to, the low-voltage alternating-current that dual-purpose machine is sent is converted to low-voltage direct and supplies with solder terminal, motor assist winding send alternating current after rectification for becoming direct current, supply with rotor winding, described control module, for receiving the signal of temperature sensor input, according to the variation of temperature sensor signal, thereby adjust rotor excitation current size and change maximum output electric welding electric current, it is characterized in that, described control module comprises:
Current detecting wire, is connected on electric welding current output terminal, for detection of maximum output electric welding electric current;
Electric welding current measurement circuit, for measuring the electric welding electric current of current detecting wire, and is converted to relatively control module of voltage signal input system by electric welding current signal;
Maximum electric welding current reference value generative circuit, for moment detected temperatures signal, when temperature signal value surpasses the threshold values of setting, generates temperature variant maximum electric welding current reference value signal, exports systematic comparison control module to;
Systematic comparison control module, compares current electric welding current signal and electric welding current reference value signal, and when electric welding current signal is larger than electric welding current reference value signal, output low level signal is to on-off circuit module;
On-off circuit module: accept the signal of systematic comparison control module output, control rectifier bridge and rotor winding between connecting and disconnecting of the circuit, and then adjust rotor excitation current size;
Current detecting wire is connected on electric welding current output terminal, electric welding current measurement circuit is connected with current detecting wire output end, maximum electric welding current reference value generative circuit is connected with temperature sensor output, the positive-negative input end of systematic comparison control module is received respectively in the output of maximum electric welding current reference value generative circuit and electric welding current measurement circuit, the input of the output termination on-off circuit module of systematic comparison control module, the negative terminal of the output of on-off circuit module and rotor winding joins, the anode of rotor winding is connected with the anode of electric capacity, at rotor winding two ends reverse parallel connection fly-wheel diode, rectifier bridge input connects the two ends of motor assist winding, the output two ends of rectifier bridge are connected respectively with electric capacity positive and negative terminal.
2. be according to claim 1ly with temperature controlled electric welding electricity generation two-purpose machine control system, it is characterized in that, described control module is further used for, according to the variation of temperature sensor signal, set maximum output electric welding current reference value, according to maximum output electric welding current reference value, control rotor winding exciting current, change the maximum output of motor electric welding electric current.
3. be according to claim 1ly with temperature controlled electric welding electricity generation two-purpose machine control system, it is characterized in that: described on-off circuit module is comprised of switch tube driving circuit and power switch pipe, the input of the output termination switch tube driving circuit of systematic comparison control module, the opening and turn-offing of the control end of the output termination power switch pipe of switch tube driving circuit power ratio control switching tube, power switch pipe source electrode welding system ground wire, the negative terminal of drain electrode and rotor winding joins.
4. be according to claim 1ly with temperature controlled electric welding electricity generation two-purpose machine control system, it is characterized in that: described on-off circuit module is triode, the base stage welding system of triode is the output of control module relatively, the negative terminal of the colelctor electrode of triode and rotor winding joins, transistor emitter welding system ground wire.
5. be with temperature controlled electric welding electricity generation two-purpose machine control method for one kind, the method comprises: temperature sensor is imbedded in the middle of motor arc-welding winding, control module is according to the variation of temperature sensor signal, thereby adjust rotor excitation current size and change maximum output electric welding electric current, it is characterized in that: the method further comprises: control module is set maximum output electric welding current reference value according to the variation of temperature sensor signal, according to maximum output electric welding current reference value, control rotor winding exciting current, change the maximum output of motor electric welding electric current.
6. be according to claim 5ly with temperature controlled electric welding electricity generation two-purpose machine control method, it is characterized in that: described maximum being set to of electric welding current reference value of exporting: when temperature sensor detects motor arc-welding winding temperature higher than certain threshold values, maximum output electric welding current reference value raises and linear reduction with temperature, until motor temperature drops to zone of reasonableness, just can return to maximum set value.
7. be according to claim 5ly with temperature controlled electric welding electricity generation two-purpose machine control method, it is characterized in that: described maximum being set to of electric welding current reference value of exporting: when motor arc-welding winding temperature being detected higher than certain threshold values, with temperature rising, non-linear reduction just can return to maximum set value until motor temperature drops to zone of reasonableness to maximum output electric welding current reference value.
8. be according to claim 5ly with temperature controlled electric welding electricity generation two-purpose machine control method, it is characterized in that: described maximum being set to of electric welding current reference value of exporting: when motor arc-welding winding temperature being detected higher than certain threshold values, maximum electric welding current reference value is limited to 1/4th left and right of the maximum output of normal condition electric welding electric current, until motor temperature drops to zone of reasonableness, just can return to maximum set value.
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| CN201110067339.XA CN102189312B (en) | 2011-03-20 | 2011-03-20 | Control system and method for electric welding and generating dual-purpose machine with temperature control |
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| CN201110067339.XA CN102189312B (en) | 2011-03-20 | 2011-03-20 | Control system and method for electric welding and generating dual-purpose machine with temperature control |
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| CN102189312B true CN102189312B (en) | 2014-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201044407Y (en) * | 2007-04-24 | 2008-04-02 | 西安北方电气有限公司 | Internal-combustion direct-current arc welding power generation dual-purpose machine |
| CN201102121Y (en) * | 2007-11-09 | 2008-08-20 | 重庆润通动力有限公司 | Current regulation device of DC arc welding machine |
| CN201618906U (en) * | 2010-01-22 | 2010-11-03 | 孟荣水 | Gasoline electric welding and power generating dual-purpose machine with temperature protecting function |
| CN202079343U (en) * | 2011-03-20 | 2011-12-21 | 江苏苏美达机电有限公司 | Control system for electric-welding and electricity-generating two-purpose machine with temperature controller |
| GB2484858A (en) * | 2011-02-07 | 2012-04-25 | Nordic Semiconductor Asa | Semiconductor temperature sensors |
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| GB1294958A (en) * | 1970-02-23 | 1972-11-01 |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044407Y (en) * | 2007-04-24 | 2008-04-02 | 西安北方电气有限公司 | Internal-combustion direct-current arc welding power generation dual-purpose machine |
| CN201102121Y (en) * | 2007-11-09 | 2008-08-20 | 重庆润通动力有限公司 | Current regulation device of DC arc welding machine |
| CN201618906U (en) * | 2010-01-22 | 2010-11-03 | 孟荣水 | Gasoline electric welding and power generating dual-purpose machine with temperature protecting function |
| GB2484858A (en) * | 2011-02-07 | 2012-04-25 | Nordic Semiconductor Asa | Semiconductor temperature sensors |
| CN202079343U (en) * | 2011-03-20 | 2011-12-21 | 江苏苏美达机电有限公司 | Control system for electric-welding and electricity-generating two-purpose machine with temperature controller |
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Assignee: Jiangsu Sumeida Electromechanical Industry Co.,Ltd. Assignor: SUMEC Machinery & Electric Co., Ltd. Contract record no.: 2012320000443 Denomination of invention: Control system and method for electric welding and generating dual-purpose machine with temperature control License type: Exclusive License Open date: 20110921 Record date: 20120412 |
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