CN201291348Y - Inversion DC submerged arc welding machine - Google Patents
Inversion DC submerged arc welding machine Download PDFInfo
- Publication number
- CN201291348Y CN201291348Y CNU2008201524466U CN200820152446U CN201291348Y CN 201291348 Y CN201291348 Y CN 201291348Y CN U2008201524466 U CNU2008201524466 U CN U2008201524466U CN 200820152446 U CN200820152446 U CN 200820152446U CN 201291348 Y CN201291348 Y CN 201291348Y
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- inductance
- bipolar transistor
- insulated gate
- gate bipolar
- welding machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Arc Welding Control (AREA)
- Inverter Devices (AREA)
Abstract
The utility model relates to a contravariant DC hidden arc welding machine, which is characterized in that an inverter and a full-bridge dephasing resonance circuit are arranged on radiators at the left and the right sides of a medium plate; a first inductance is positioned under the medium plate, and a second inductance is positioned on the medium plate; a third capacitance is arranged on the medium plate; an electric reactor, an inverter, an intermediate frequency transformer, an intermediate frequency rectifier and a full-bridge dephasing resonance circuit are arranged under the medium plate; the first inductance, the second inductance, the third capacitance and the electric reactor form soft switching; the intermediate frequency rectifier and the electric reactor are connected with the secondary output circuit N2 of the intermediate frequency transformer; and the first inductance is connected with the auxiliary circuit N3 by the intermediate frequency transformer. The contravariant DC hidden arc welding machine has the advantages that the switch loss is low, the heat productivity is low, the spike voltage is also low, the IGBT work is reliable and stable, the self-regulating capacity of the electric arc is strong, the electric arc is soft, the welding spatter and deformation are less, and the shape of the welding seam is beautiful.
Description
Technical field
The utility model relates to a kind of inversion direct current submerged arc welding machine, belongs to the welding machine technical field.
Background technology
The present submerged arc welding machine overwhelming majority is the submerged arc welding electric power of the industrial frequency rectifying of controllable silicon (SRC).Because the silicon controlled switching frequency is 50-60HZ, so main transformer is very big and heavy.By U=4.44NBSf formula (input voltage of U indication transformer wherein, N is the coiling number of turn, S is that the core section of transformer is long-pending, f is a frequency of input voltage, B is the magnetic induction intensity of iron core).As can be known: under the constant situation of U, B and N, f increases, and then S reduces.Power frequency is 50HZ, and the switching frequency of high-power insulated gate bipolar transistor (IGBT) is 20000HZ, and as seen under the situation that other conditions are identical, the main transformer of the inverter type welder of IGBT can be littler about 400 times than the main transformer of industrial frequency rectifying.As seen big, the Heavy Weight of the consumptive material of this submerged arc welding electric power, power consumption, volume.
Summary of the invention
The purpose of this utility model provides a kind of inversion direct current submerged arc welding machine of efficient, energy-saving and environmental protection.
For realizing above purpose, the technical solution of the utility model provides a kind of inversion direct current submerged arc welding machine, comprise frequency rectifier, left side during frequency rectifier is located on the plate, on the radiator of right side, wave filter is located on the middle plate, intermediate-frequency transformer is located on the base plate, the intermediate frequency rectifier is located at the left side on the base plate, on the radiator on right side, reactor is located on the middle plate, the centre cap of one end and intermediate-frequency transformer joins, the other end is connected with current divider, the current divider other end joins with the output negative terminal, control transformer, control panel and drive plate are located on the element board, it is characterized in that, left side on middle plate, the right side radiator is provided with inverter and full-bridge phase-shifting resonance formula circuit, first inductance is under middle plate, second inductance is located on middle plate, on middle plate, be provided with the 3rd electric capacity, have reactor at middle plate, inverter, intermediate-frequency transformer, the intermediate frequency rectifier, full-bridge phase-shifting resonance formula circuit, first inductance, second inductance, the 3rd electric capacity and reactor are formed soft switch, the intermediate frequency rectifier is connected with the secondary output winding N2 of intermediate-frequency transformer with reactor, and first inductance is connected with the ancillary coil N3 of intermediate-frequency transformer.
The inversion direct current submerged arc welding machine of a kind of soft switch that the utility model provides, not only volume is little, in light weight for it, and fault rate is low, and rational quiet external characteristics and good dynamic characteristics are arranged, the control complete function, make welding current under the situation of voltage ripple of power network and arc length variations, highly steady, the electric arc self-adjusting ability is strong, electric arc is soft, spatter is little, is out of shape for a short time, and appearance of weld is attractive in appearance.
The utility model has the advantages that:
1. reliability aspect: owing to adopt soft switch technique, so switching loss is low, caloric value is low, and peak voltage is also low, the IGBT reliable and stable work;
2. welding performance aspect: because rational quiet external characteristics and good dynamic characteristics are arranged, the control complete function, make welding current highly steady under the situation of voltage ripple of power network and arc length variations, the electric arc self-adjusting ability is strong, electric arc is soft, spatter is little, be out of shape little, appearance of weld is attractive in appearance, be provided with the striking current regulatory function, greatly improved arcing initiation success rate, also be provided with the push current regulatory function, guaranteed appearance of weld, made things convenient for the fusion penetration adjusting, made submerged arc welding machine stronger the adaptability of welding procedure, a tractor serves several purposes can also carbon arc air gouging and manual electric arc welding.
Description of drawings
Fig. 1 is a kind of inversion direct current submerged arc welding machine left view;
Fig. 2 is a kind of inversion direct current submerged arc welding machine vertical view;
Fig. 3 is a kind of inversion direct current submerged arc welding machine front view;
Fig. 4 is a kind of inversion direct current submerged arc welding machine rearview;
Fig. 5 realizes the major loop schematic diagram of soft switch for a kind of inversion direct current submerged arc welding machine;
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As Fig. 1; 2; 3; shown in 4; be a kind of inversion direct current submerged arc welding machine structural representation, described a kind of inversion direct current submerged arc welding machine is by frequency rectifier 1; wave filter 2; inverter 3; intermediate-frequency transformer 4; intermediate frequency rectifier 5; reactor 6; current divider 7; control transformer 8; control panel 9; drive plate 10; blower fan 11; first radiator 12; middle plate 13; last element board 14; base plate 15; second radiator 16; full-bridge phase-shifting resonance formula circuit 17; first inductance 18; the 3rd electric capacity 19; welding cable is born binding post 20; electric current digital display gauge outfit 21; voltage digital display gauge outfit 22; rear board 23; second inductance 24; input wires terminal 25; three pole reactor 26; baffle 27 (HTS5); overcurrent protection plate 28 (HTS4); thermal relay 29; front panel 30; striking current adjusting knob 31; relay indicating light 32; power supply indicator 33; push current adjusting knob 34; welding current adjusting knob 35; control mode selector switch 36; working mode selection switch 37; control cabinet protector 38; guard lamp 39; preceding lower panel 40; the positive binding post 41 of welding cable; control cable socket 42; control loop source electric switch 43; air switch 44 is formed.
On the left and right side radiator 12 during frequency rectifier 1 is contained on the plate 13, so that three-phase alternating voltage is transformed into DC voltage; During being contained in, wave filter 2 on the plate 13, with electric capacity above-mentioned rectifier 1 commutating voltage is become more level and smooth DC voltage exactly; On the left and right side radiator 12 during inverter 3 is contained on the plate 13, it is the inverter of high-power insulated gate bipolar transistor (IGBT) as soft switch element, be used for the DC voltage of above-mentioned rectification output is converted to the intermediate frequency square-wave voltage, this transfer process is called inversion; Intermediate-frequency transformer 4 is contained on the base plate 15, be used for the intermediate frequency square-wave voltage of above-mentioned inverter 3 outputs is transformed into lower intermediate frequency square-wave voltage, iron core adopts nanocrystalline material, compare with ferrite, it has saturation induction density Bm height, and loss is low, the magnetic conductivity height, advantages such as Heat stability is good, primary and secondary coil adopt the parallel connection of multiply enamel-covered wire.
Intermediate frequency rectifier 5: be contained on the radiator 16 of the left and right side on the base plate 15, be used for the intermediate frequency square-wave voltage of above-mentioned intermediate-frequency transformer 4 outputs is transformed into DC voltage, because the radiating surface of radiator is very big, radiating effect is very good, so arcing time factor reaches (1000A/44V) more than 90% under the normal temperature.
On the plate 13, the centre cap of an end and intermediate-frequency transformer 4 joined during reactor 6 was lifted on, and the other end and current divider 7 join, and play filtering and energy storage; Current divider 7 one ends and reactor 6 join, and the other end joins with output negative terminal 20, the effect of current sampling, and sampled signal is used for the demonstration of actual current and the effect of current feedback.
High-power cooling fan 11 is contained on the rear board 23, plays forced air cooling.Second inductance 24 (L1) is located on middle plate 13, and plate was 13 times during first inductance 18 (L2) was lifted on, and the number of turn is decided according to the size of output current, can increase leakage inductance.
On the plate 13, play during electric capacity 19 (C9) is contained in, prevent intermediate-frequency transformer 4 magnetic bias and saturated every straight effect.The negative binding post 20 of welding cable is contained on the preceding lower panel 40, the submerged arc welding machine output negative pole.Electric current digital display gauge outfit 21 is contained on the front panel 30, indication submerged arc welding machine electric current preset value and welding current actual value.Voltage digital display gauge outfit 22 is contained on the front panel 30, the welding voltage value and the preset value of indication submerged arc welding machine.Input wires terminal 25 is contained on the rear board 23, is the input wires terminal of three-phase 380V.Three pole reactor 26 is contained on the element board 14, and is anti-tampering.Baffle 27 is contained on the intermediate frequency rectifier 5, absorbs peak voltage, protection intermediate frequency rectifier 5.28 elementary overcurrent protections of overcurrent protection plate are realized by ripple control.
Striking current adjusting knob 31 is contained on the front panel 30, is used to regulate striking current, changes the power supply arc starting performance, makes welding machine can adapt to the starting the arc requirement of various welding conditions.Relay indicating light 32 is contained on the front panel 30, and the bright expression submerged arc welding machine of lamp starts.Power supply indicator 33 is contained on the front panel 30, and the bright expression of lamp has inserted the power supply of three-phase 380V.Push current adjusting knob 34 is contained on the front panel 30, is used to regulate push current, and the control weld penetration improves appearance of weld.Welding current adjusting knob 35 is contained on the front panel 30, is used to regulate the welding current size.
Control mode selector switch 36 is contained on the front panel 30, when this switch is put " nearly control " position, in control panel adjusted welding current size; When this switch was put " remote control ", available submerged-arc welding control cabinet was regulated the welding current size.Working mode selection switch 37 is contained on the front panel 30, can carry out the manual arc welding when this switch is put " manual metal-arc welding " position; When this switch is put " submerged-arc welding " position, can carry out submerged arc welding.Control cabinet protector 38 is contained on the front panel 30, and control cabinet 120V voltage is played safety effect.
The positive binding post 41 of welding cable is contained on the preceding lower panel 40, the submerged arc welding machine output cathode.Control cable socket 42: on the lower panel 40, be used to connect submerged arc welding machine and control cabinet before being contained in, the control cabinet working power is provided, the control signal between transmission submerged arc welding machine and the control cabinet.Control loop source electric switch 43 is contained on the front panel 30, the switch of control loop power supply.
Wherein inverter 3, intermediate-frequency transformer 4, intermediate frequency rectifier 5, full-bridge phase-shifting resonance formula circuit 17, the first inductance 18, second inductance 24, the 3rd electric capacity 19 and reactor 6 are formed soft switch.Intermediate frequency rectifier 5 is connected with the secondary output winding N2 of intermediate-frequency transformer 4 with reactor 6, and first inductance 18 is connected with the ancillary coil N3 of intermediate-frequency transformer 4.The number of turn of ancillary coil N3 and output winding N2 are close.
The first leading arm that described inverter 3 is composed in parallel by first power insulated gate bipolar transistor Q1 and the 3rd diode D3, the second leading arm that the third-largest power insulated gate bipolar transistor Q3 and the 4th diode D4 compose in parallel, first lagging leg that second largest power insulated gate bipolar transistor Q2 and the 5th diode D5 compose in parallel, second lagging leg that the fourth-largest power insulated gate bipolar transistor Q4 and the 6th diode D6 compose in parallel is formed, the first leading arm is connected with the second leading arm, first lagging leg is connected with second lagging leg, first power insulated gate bipolar transistor Q1, second largest power insulated gate bipolar transistor Q2, the base stage of the third-largest power insulated gate bipolar transistor Q3 and the fourth-largest power insulated gate bipolar transistor Q4 is connected with drive plate 10.
Described intermediate frequency rectifier 5 is composed in parallel by the first diode D1 and the second diode D2.
Described full-bridge phase-shifting resonance formula circuit 17 is composed in series by first capacitor C 7 and second capacitor C 8, full-bridge phase-shifting resonance formula circuit 17 is located between leading arm and the lagging leg, the first leading arm is in parallel with second capacitor C 8 and first lagging leg, the second leading arm is in parallel with first capacitor C 7 and second lagging leg, the first leading arm, second capacitor C 8, first lagging leg, the second leading arm, first capacitor C 7 is connected with primary coil N1 one end of intermediate-frequency transformer 4 with second lagging leg, and the colelctor electrode of the fourth-largest power insulated gate bipolar transistor Q4 is by second inductance 24, the 3rd electric capacity 19 is connected with the other end of the primary coil N1 of intermediate-frequency transformer 4.
Fig. 5 is seen in the connection of full-bridge phase-shifting resonance formula soft switch circuit, what wherein frame of broken lines 3-1 and 3-2 were interior is that two high-power insulated gate bipolar transistors (being called for short IGBT) are packaged together, form a half-bridge module, the Q1 of IGBT wherein, Q2, Q3, Q4 all anti-and fast diode D3, D4, D5, D6, Q1, the Q3 of two IGBT in first half-bridge module are all and capacitor C 8, C7."+" end of the first half-bridge module 3-1 and the second half-bridge module 3-2 and the direct current behind the industrial frequency rectifying+join, their "-" end and the direct current behind the industrial frequency rectifying-join, the public affairs of the first module 3-1 are joined for the end of the primary coil N1 of end B1 and intermediate-frequency transformer 4 (T1), one end of the primary coil N1 other end and the 3rd electric capacity 19 (C9) joins, one end of the 3rd electric capacity 19 (C9) other end and second inductance 24 (L1) joins, and the public affairs of second inductance 24 (L1) other end and the second module 3-1 are joined for end B2.The end that the centre cap of the secondary coil N2 of intermediate-frequency transformer connects reactor 6 (L3) joins, and reactor 6 (L3) other end is connected to the output negative terminal of welding machine; The other two ends of secondary coil N2 remove to connect the D1 of intermediate frequency rectifier 5, the positive pole of D2 respectively, and the positive pole of the negative pole of D1, D2 and welding machine output joins, and the two ends of the secondary coil N3 of intermediate-frequency transformer join with the two ends of first inductance 18 (L2) respectively.
The course of work of the soft switch of full-bridge phase-shifting resonance formula: after Q1, Q4 open simultaneously (this moment Q2, Q3 close), the flow direction of electric current: direct current+→ "-" → direct current of "+" → B1 → N1 → 19 (C9) → 24 (L1) → B2 → Q4 of Q1-.Q1 closes prior to Q4 when closing, treat that Q4 closes fully after, Q2, Q3 are open-minded simultaneously, the flow direction of electric current is: direct current+→ "-" → direct current of "+" → B2 → 24 (L1) → 19 (C9) → N1 → B1 → Q3 of Q2-.Q3 closes with Q2 earlier when closing, because the effect of filter sense and capacitor C 7, C8, this just makes Q1, the Q3 of the first module 3-1 realize the no-voltage open and close; The Q2 of the second module 3-2, Q4 have just realized that no-voltage opens, and zero current closes.This is exactly a kind of of the normal soft switch of saying.
Claims (4)
1. inversion direct current submerged arc welding machine, comprise frequency rectifier (1), frequency rectifier (1) is located at the left side on the middle plate (13), on the right side radiator (12), wave filter (2) is located on the middle plate (13), intermediate-frequency transformer (4) is located on the base plate (15), intermediate frequency rectifier (5) is located at the left side on the base plate (15), on the radiator on right side (16), reactor (6) is located on the middle plate (13), the centre cap of one end and intermediate-frequency transformer (4) joins, the other end is connected with current divider (7), the negative binding post (20) of current divider (7) other end and welding cable joins, control transformer (8), control panel (9) and drive plate (10) are located on the element board (14), it is characterized in that, left side on middle plate (13), right side radiator (12) is provided with inverter (3) and full-bridge phase-shifting resonance formula circuit (17), first inductance (18) is under middle plate (13), second inductance (24) is located on middle plate (13), on middle plate (13), be provided with the 3rd electric capacity (19), have reactor (6) at middle plate (13), inverter (3), intermediate-frequency transformer (4), intermediate frequency rectifier (5), full-bridge phase-shifting resonance formula circuit (17), first inductance (18), second inductance (24), the 3rd electric capacity (19) and reactor (6) are formed soft switch, intermediate frequency rectifier (5) is connected with the secondary output winding N2 of intermediate-frequency transformer (4) with reactor (6), and first inductance (18) is connected with the ancillary coil N3 of intermediate-frequency transformer (4).
2. a kind of inversion direct current submerged arc welding machine according to claim 1, it is characterized in that, the first leading arm that described inverter (3) is composed in parallel by first power insulated gate bipolar transistor Q1 and the 3rd diode D3, the second leading arm that the third-largest power insulated gate bipolar transistor Q3 and the 4th diode D4 compose in parallel, first lagging leg that second largest power insulated gate bipolar transistor Q2 and the 5th diode D5 compose in parallel, second lagging leg that the fourth-largest power insulated gate bipolar transistor Q4 and the 6th diode D6 compose in parallel is formed, the first leading arm is connected with the second leading arm, first lagging leg is connected with second lagging leg, first power insulated gate bipolar transistor Q1, second largest power insulated gate bipolar transistor Q2, the base stage of the third-largest power insulated gate bipolar transistor Q3 and the fourth-largest power insulated gate bipolar transistor Q4 is connected with drive plate (10).
3. a kind of inversion direct current submerged arc welding machine according to claim 1 is characterized in that, described intermediate frequency rectifier (5) is composed in parallel by the first diode D1 and the second diode D2.
4. a kind of inversion direct current submerged arc welding machine according to claim 1, it is characterized in that, described full-bridge phase-shifting resonance formula circuit (17) is composed in series by first capacitor C 7 and second capacitor C 8, full-bridge phase-shifting resonance formula circuit (17) is located between leading arm and the lagging leg, the first leading arm is in parallel with second capacitor C 8 and first lagging leg, the second leading arm is in parallel with first capacitor C 7 and second lagging leg, the first leading arm, second capacitor C 8, first lagging leg, the second leading arm, first capacitor C 7 is connected with primary coil N1 one end of intermediate-frequency transformer (4) with second lagging leg, and the colelctor electrode of the fourth-largest power insulated gate bipolar transistor Q4 is by second inductance (24), the 3rd electric capacity (19) is connected with the other end of the primary coil N1 of intermediate-frequency transformer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201524466U CN201291348Y (en) | 2008-08-28 | 2008-08-28 | Inversion DC submerged arc welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201524466U CN201291348Y (en) | 2008-08-28 | 2008-08-28 | Inversion DC submerged arc welding machine |
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| Publication Number | Publication Date |
|---|---|
| CN201291348Y true CN201291348Y (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201524466U Expired - Lifetime CN201291348Y (en) | 2008-08-28 | 2008-08-28 | Inversion DC submerged arc welding machine |
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| Country | Link |
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| CN (1) | CN201291348Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233516A (en) * | 2010-05-05 | 2011-11-09 | 深圳市佳士科技股份有限公司 | General assembly line of welding machine and production flow of welding machine |
| TWI691154B (en) * | 2017-11-01 | 2020-04-11 | 日商東芝股份有限公司 | Power supply device for electric vehicle |
-
2008
- 2008-08-28 CN CNU2008201524466U patent/CN201291348Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233516A (en) * | 2010-05-05 | 2011-11-09 | 深圳市佳士科技股份有限公司 | General assembly line of welding machine and production flow of welding machine |
| TWI691154B (en) * | 2017-11-01 | 2020-04-11 | 日商東芝股份有限公司 | Power supply device for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI HUTONG ENTERPRISE GROUP CO., LTD. Free format text: FORMER NAME: SHANGHAI HUTONG ENTERPRISE DEVELOPMENT CO., LTD. Owner name: SHANGHAI HUTONG ENTERPRISE DEVELOPMENT CO., LTD. Free format text: FORMER NAME: SHANGHAI HUTONG WELDING ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201600 Shanghai Songjiang District Changye Industrial Zone Sheshan Road No. 333 Patentee after: SHANGHAI HUTONG ENTERPRISE GROUP Co.,Ltd. Address before: 201600 Shanghai Songjiang District Changye Industrial Zone Sheshan Road No. 333 Patentee before: Shanghai Tong Tong Enterprise Development Co.,Ltd. Address after: 201600 Shanghai Songjiang District Changye Industrial Zone Sheshan Road No. 333 Patentee after: Shanghai Tong Tong Enterprise Development Co.,Ltd. Address before: 201600 Shanghai Songjiang District Changye Industrial Zone Sheshan Road No. 333 Patentee before: SHANGHAI HUTONG WELDING ELECTR |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |