CN208691152U - A kind of explosion-proof inverter type welder - Google Patents
A kind of explosion-proof inverter type welder Download PDFInfo
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- CN208691152U CN208691152U CN201820827223.9U CN201820827223U CN208691152U CN 208691152 U CN208691152 U CN 208691152U CN 201820827223 U CN201820827223 U CN 201820827223U CN 208691152 U CN208691152 U CN 208691152U
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Abstract
The utility model discloses a kind of explosion-proof inverter type welders, including rectification circuit, filter circuit, inverter circuit, voltage changing module and electrode welder；The rectification circuit is connect with three phase mains and filter circuit respectively, the inverter circuit is connect with the rectification circuit, the inverter circuit is also connect with the voltage changing module, the voltage changing module is connect with the electrode welder, the filter circuit includes capacitor C1, the capacitor C1 is connect with the rectification circuit and inverter circuit respectively, and the capacitor C1 is thin-film capacitor.Advantages and beneficial effects of the utility model lie in that in use almost without heat generation, there is no the problem of capacitor explosion, other problems caused by less existing because of electrolyte, therefore explosion-proof effect is played, and, high frequency response is also relatively good, also stronger to the high frequency afterflow absorbability of load, has certain self-healing property；Meanwhile structure is simple, installation is easy to operate, is conducive to large-scale use.
Description
Technical field
The utility model relates to electric field, in particular to a kind of explosion-proof inverter type welder.
Background technique
Inverter type welder is gradually recognized, is the core force of the following welding profession.Current inverter type welder mainly uses
General electrolytic capacitor is filtered come the direct current exported to rectification module, and the resistance to of general electrolytic capacitor forces down, general to be electrolysed
The voltage rating of capacitor is 450V, and the voltage after three-phase 380V rectification is 530V, therefore uses general electrolytic capacitor filtering
Words must use cascaded structure, and it also requires divide to capacitor, it is inconsistent otherwise to will cause concatenated capacitance voltage, most
Lead to voltage breakdown eventually；Meanwhile the leakage current of general electrolytic capacitor is big, internal resistance is big, this will lead to electrolytic capacitor in use process
Middle fever is serious, and fever will lead to partial electrolyte liquid and gradually dry up, and capacitance will decline, and internal resistance will be more after capacitance decline
Greatly, fever is just more serious, and such vicious circle eventually leads to condenser failure；Meanwhile the voltage changing module of existing inverter type welder
The alternating current of output needs to again pass by after rectifier rectified, and just may be output to electrode welder, therefore structure is complicated, installs
It is inconvenient.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of explosion-proof inverter type welder.Rectification circuit in the technical program
Three-phase alternating current for exporting three phase mains is changed into direct current, and filter circuit is used for the direct current exported to rectification circuit
It being filtered, inverter circuit is switched on or off by control transistor V1, V2, V3 and V4's, direct current is changed into alternating current,
And electricity output will be exchanged to voltage changing module.Voltage changing module exports after alternating current is boosted to welding machine motor；Wherein, secondary wire
The alternating current of circle output will flow through diode D7 or diode D8, be changed into working direct current electricity, and export to first motor, make the
Arc discharge is generated between one electrode and second electrode, to weld to workpiece；Therefore, the technical program is by utilizing two poles
Alternating current directly can be switched to working direct current electricity by pipe D7 and D8, and structure is simple, and installation is easy to operate, be conducive to make on a large scale
With；
Replace common electrolytic capacitor by using thin-film capacitor, since thin-film capacitor is dry-type capacitance, inside is without electricity
Liquid is solved, leakage current and loss angle are substantially negligible and disregard, therefore filter circuit is in use almost without heat
The problem of generating, bursting without capacitor, other problems caused by less existing because of electrolyte, therefore play explosion-proof effect；
Again due to the specified long service life of thin-film capacitor, ripple current is higher compared to electrolytic capacitor, therefore the pressure resistance of thin-film capacitor
It can be made high, can accomplish thousands of volts, therefore, thin-film capacitor high frequency response is also relatively good, inhales to the high frequency afterflow of load
Receipts ability is also stronger, and also has certain self-healing property；Again due to can be used directly in inversion welding source, without considering
Polarity problems, therefore structure is simple, is easily installed.
The explosion-proof inverter type welder of one of the utility model, including rectification circuit, filter circuit, inverter circuit, transformation mould
Block and electrode welder；
The rectification circuit is connect with three phase mains and filter circuit respectively, and the inverter circuit and the rectification circuit connect
It connects, the inverter circuit is also connect with the voltage changing module, and the voltage changing module is connect with the electrode welder, the filtered electrical
Road includes capacitor C1, and the capacitor C1 is connect with the rectification circuit and inverter circuit respectively, and the capacitor C1 is thin-film capacitor.
In above scheme, the rectification circuit includes diode D1, D2, D3, D4, D5 and D6 and first input end,
Two input terminals, third input terminal, the first output end and second output terminal；
The anode of the diode D1 is connect with the cathode of the diode D2, and the first input end is respectively with described two
The anode of pole pipe D1 is connected with the cathode of diode D2, and the anode of the diode D3 is connect with the cathode of the diode D4,
Second input terminal is connect with the cathode of the anode of the diode D3 and diode D4 respectively, the anode of the diode D5
It is connect with the cathode of the diode D6, the third input terminal is negative with the positive and diode D6 of the diode D5 respectively
Pole connection, first output end connect with the cathode of described diode D1, D3, D5 respectively, the second output terminal respectively with
The anode connection of described diode D2, D4, D6.
In above scheme, the both ends of the capacitor C1 are connect with first output end and second output terminal respectively.
In above scheme, the inverter circuit includes transistor V1, V2, V3 and V4 and the first inverting output terminal and
Two inverting output terminals；
The collector of the transistor V1 is connect with first output end, the emitter of the transistor V1 and described the
The connection of one inverting output terminal, the collector of the transistor V2 are connect with first inverting output terminal, the transistor V2's
Emitter is connect with the second output terminal, and the collector of the transistor V3 is connect with first output end, the crystal
The emitter of pipe V3 is connect with second inverting output terminal, the collector of the transistor V4 and second inverting output terminal
Connection, the emitter of the transistor V4 are connect with the second output terminal.
In above scheme, the voltage changing module includes primary coil L1, secondary coil L2, diode D7 and D8, Yi Ji electricity
Pole input terminal and electrode output；
First inverting output terminal and the second inverting output terminal are connect with the primary coil L1 respectively, the secondary wire
Circle is matched with the primary coil, and the anode of the diode D7 and the anode of diode D8 are connected to the secondary coil
On the both ends of L2, the cathode of the diode D7 and the cathode of diode D8 are connect with one end of the electrode input respectively,
The other end of the electrode input is connect with the welding electrode, and one end of the electrode output and the welding electrode connect
It connects, the other end of the electrode output is connect with the secondary coil L2.
In above scheme, the welding electrode includes first electrode and second electrode, the first electrode and the electrode
Input terminal connection, the second electrode are connect with the electrode output, and the secondary coil passes through the diode D7 and D8
Direct current is exported to the first electrode, makes to generate arc discharge between the first electrode and the second electrode, to work
Part is welded.
Advantages and beneficial effects of the utility model lie in that the utility model provides a kind of explosion-proof inverter type welder, filtered electrical
Road is other caused by less existing because of electrolyte the problem of explosion without capacitor in use almost without heat generation
Problem, therefore play explosion-proof effect, also, high frequency response is also relatively good, also more to the high frequency afterflow absorbability of load
By force, there is certain self-healing property；Meanwhile structure is simple, installation is easy to operate, is conducive to large-scale use.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of explosion-proof inverter type welder of the utility model.
In figure: 1, rectification circuit 2, filter circuit 3, inverter circuit 4, voltage changing module
5, electrode welder 6, three phase mains 11, first input end 12, the second input terminal
13, third input terminal 14, the first output end 15, second output terminal
31, the first inverting output terminal 32, the second inverting output terminal 41, electrode input
42, electrode output 51, first electrode 52, second electrode
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
As shown in Figure 1, the utility model is a kind of explosion-proof inverter type welder, including rectification circuit 1, filter circuit 2, inversion
Circuit 3, voltage changing module 4 and electrode welder 5；
Rectification circuit 1 is connect with three phase mains 6 and filter circuit 2 respectively, and inverter circuit 3 is connect with rectification circuit 1, inverse
Power transformation road 3 is also connect with voltage changing module 4, and voltage changing module 4 is connect with electrode welder 5, and filter circuit 2 includes capacitor C1, capacitor C1
It is connect respectively with rectification circuit 1 and inverter circuit 3, capacitor C1 is thin-film capacitor.
Specifically, rectification circuit 1 includes that diode D1, D2, D3, D4, D5 and D6 and first input end 11, second are defeated
Enter end 12, third input terminal 13, the first output end 14 and second output terminal 15；First input end 11, the second input terminal 12, third
Input terminal 13 is connect with three phase mains 6 respectively；
The anode of diode D1 is connect with the cathode of diode D2, the anode with diode D1 respectively of first input end 11
It is connected with the cathode of diode D2, the anode of diode D3 is connect with the cathode of diode D4, and the second input terminal 12 is respectively with two
The anode of pole pipe D3 is connected with the cathode of diode D4, and the anode of diode D5 is connect with the cathode of diode D6, third input
End 13 is connect with the anode of diode D5 with the cathode of diode D6 respectively, the first output end 14 respectively with diode D1, D3, D5
Cathode connection, second output terminal 15 respectively with diode D2, D4, D6 anode connect.
Further, the both ends of capacitor C1 are connect with the first output end 14 and second output terminal 15 respectively.
Further, inverter circuit 3 includes that transistor V1, V2, V3 and V4 and the first inverting output terminal 31 and second are inverse
Become output end 32；
The collector of transistor V1 is connect with the first output end 14, the emitter of transistor V1 and the first inverting output terminal 31
Connection, the collector of transistor V2 are connect with the first inverting output terminal 31, and the emitter and second output terminal 15 of transistor V2 connects
It connecing, the collector of transistor V3 is connect with the first output end 14, and the emitter of transistor V3 is connect with the second inverting output terminal 32,
The collector of transistor V4 is connect with the second inverting output terminal 32, and the emitter of transistor V4 is connect with second output terminal 15.
Further, voltage changing module 4 includes primary coil L1, secondary coil L2, diode D7 and D8 and electrode input
End 41 and electrode output 42；
First inverting output terminal 31 and the second inverting output terminal 32 are connect with primary coil L1 respectively, secondary coil and primary
Coil matching, the anode of diode D7 and the anode of diode D8 are connected on the both ends of secondary coil L2, diode D7
Cathode and the cathode of diode D8 connect respectively with one end of electrode input 41, the other end of electrode input 41 and welding
Electrode connection, one end of electrode output 42 are connect with welding electrode, and the other end and secondary coil L2 of electrode output 42 connect
It connects.
Further, welding electrode includes first electrode 51 and second electrode 52, first electrode 51 and electrode input 41
Connection, second electrode 52 are connect with electrode output 42, and secondary coil is exported directly by diode D7 and D8 to first electrode 51
Galvanic electricity makes to generate arc discharge between first electrode 51 and second electrode 52, to weld workpiece.
The working principle of above-mentioned technical proposal is: the three-phase alternating current that rectification circuit 1 is used to export three phase mains 6 changes
For direct current, the direct current that filter circuit 2 is used to export rectification circuit 1 is filtered, and inverter circuit 3 passes through control transistor
V1, V2, V3 and V4's is switched on or off, and direct current is changed into alternating current, and will exchange electricity output to voltage changing module 4.Transformation
Module 4 exports after alternating current is boosted to welding machine motor；Wherein, the alternating current of secondary coil output will flow through diode D7
Or diode D8, it is changed into working direct current electricity, and export to first motor, makes to generate between first electrode 51 and second electrode 52
Arc discharge, to be welded to workpiece；Therefore, the technical program is by utilizing diode D7 and D8 can be directly by alternating current
Switch to working direct current electricity, structure is simple, and installation is easy to operate, is conducive to large-scale use；
Replace common electrolytic capacitor by using thin-film capacitor, since thin-film capacitor is dry-type capacitance, inside is without electricity
Liquid is solved, leakage current and loss angle are substantially negligible and disregard, therefore filter circuit is in use almost without heat
The problem of generating, bursting without capacitor, other problems caused by less existing because of electrolyte, therefore play explosion-proof effect；
Again due to the specified long service life of thin-film capacitor, ripple current is higher compared to electrolytic capacitor, therefore the pressure resistance of thin-film capacitor
It can be made high, can accomplish thousands of volts, therefore, thin-film capacitor high frequency response is also relatively good, inhales to the high frequency afterflow of load
Receipts ability is also stronger, and also has certain self-healing property；Again due to can be used directly in inversion welding source, without considering
Polarity problems, therefore structure is simple, is easily installed.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of explosion-proof inverter type welder, which is characterized in that including rectification circuit, filter circuit, inverter circuit, voltage changing module and weldering
Machine electrode；
The rectification circuit is connect with three phase mains and filter circuit respectively, and the inverter circuit is connect with the rectification circuit,
The inverter circuit is also connect with the voltage changing module, and the voltage changing module is connect with the electrode welder, the filter circuit
Including capacitor C1, the capacitor C1 is connect with the rectification circuit and inverter circuit respectively, and the capacitor C1 is thin-film capacitor.
2. a kind of explosion-proof inverter type welder according to claim 1, which is characterized in that the rectification circuit includes diode
D1, D2, D3, D4, D5 and D6 and first input end, the second input terminal, third input terminal, the first output end and the second output
End；
The diode D1 anode connect with the cathode of the diode D2, the first input end respectively with the diode
The anode of D1 is connected with the cathode of diode D2, and the anode of the diode D3 is connect with the cathode of the diode D4, described
Second input terminal is connect with the cathode of the anode of the diode D3 and diode D4 respectively, the anode of the diode D5 and institute
The cathode connection of diode D6 is stated, the third input terminal connects with the anode of the diode D5 and the cathode of diode D6 respectively
Connect, first output end is connect with the cathode of described diode D1, D3, D5 respectively, the second output terminal respectively with it is described
The anode connection of diode D2, D4, D6.
3. a kind of explosion-proof inverter type welder according to claim 2, which is characterized in that the both ends of the capacitor C1 respectively with institute
The first output end is stated to connect with second output terminal.
4. a kind of explosion-proof inverter type welder according to claim 3, which is characterized in that the inverter circuit includes transistor
V1, V2, V3 and V4 and the first inverting output terminal and the second inverting output terminal；
The collector of the transistor V1 is connect with first output end, the emitter of the transistor V1 and described first inverse
Become output end connection, the collector of the transistor V2 is connect with first inverting output terminal, the transmitting of the transistor V2
Pole is connect with the second output terminal, and the collector of the transistor V3 is connect with first output end, the transistor V3
Emitter connect with second inverting output terminal, the collector of the transistor V4 and second inverting output terminal connect
It connects, the emitter of the transistor V4 is connect with the second output terminal.
5. a kind of explosion-proof inverter type welder according to claim 4, which is characterized in that the voltage changing module includes primary coil
L1, secondary coil L2, diode D7 and D8 and electrode input and electrode output；
First inverting output terminal and the second inverting output terminal are connect with the primary coil L1 respectively, the secondary coil with
The primary coil matching, the anode of the diode D7 and the anode of diode D8 are connected to the secondary coil L2's
On both ends, the cathode of the diode D7 and the cathode of diode D8 are connect with one end of the electrode input respectively, described
The other end of electrode input is connect with welding electrode, and one end of the electrode output is connect with welding electrode, the electrode
The other end of output end is connect with the secondary coil L2.
6. a kind of explosion-proof inverter type welder according to claim 5, which is characterized in that the welding electrode includes first electrode
And second electrode, the first electrode are connect with the electrode input, the second electrode is connect with the electrode output,
The secondary coil by the diode D7 and D8 to the first electrode export direct current, make the first electrode with it is described
Arc discharge is generated between second electrode, to weld to workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820827223.9U CN208691152U (en) | 2018-05-29 | 2018-05-29 | A kind of explosion-proof inverter type welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820827223.9U CN208691152U (en) | 2018-05-29 | 2018-05-29 | A kind of explosion-proof inverter type welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208691152U true CN208691152U (en) | 2019-04-02 |
Family
ID=65877783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820827223.9U Active CN208691152U (en) | 2018-05-29 | 2018-05-29 | A kind of explosion-proof inverter type welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208691152U (en) |
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2018
- 2018-05-29 CN CN201820827223.9U patent/CN208691152U/en active Active
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