CN103366932A - Middle-high-frequency transformer - Google Patents
Middle-high-frequency transformer Download PDFInfo
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- CN103366932A CN103366932A CN2013103327487A CN201310332748A CN103366932A CN 103366932 A CN103366932 A CN 103366932A CN 2013103327487 A CN2013103327487 A CN 2013103327487A CN 201310332748 A CN201310332748 A CN 201310332748A CN 103366932 A CN103366932 A CN 103366932A
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Abstract
The invention relates to a water-cooled middle-high-frequency transformer for a resistance welding machine. The invention provides the middle-high-frequency transformer, wherein a main transformer comprises a magnetic core, a primary winding and a secondary winding; the middle part of the primary winding is provided with three to eleven groups of primary coils, each group of primary coils is formed by connecting two coils in series, which have the same number of turns and are wound in the forward and reverse directions, and each group of primary coils is provided with two lead-out terminals; two ends of the primary winding are respectively provided with a group of primary small coils, the two groups of primary small coils are connected in series, the two groups of primary small coils are provided with two lead-out terminals; dotted terminals in all the lead-out terminals in the primary winding are connected mutually, namely the dotted terminals are connected in parallel to form two input terminals of the main transformer; the secondary winding comprises one to five groups of secondary coils and centre taps led out from the secondary coils, dotted terminals in two lead-out terminals of all the secondary coils are connected in parallel to form two lead-out terminals, the two lead-out terminals are respectively connected with diodes and are then combined to form a first output terminal of the main transformer, and the centre taps are used as a second output terminal of the main transformer.
Description
Technical field
The invention belongs to welding equipment accessory field, specifically relate to a kind of medium/high frequency transformer, particularly a kind of medium/high frequency transformer that uses the resistance welder of water-cooled.
Background technology
Resistance Welding electromechanical source transformer commonly used mainly is to work in industrial frequency AC, output industrial frequency AC or power frequency direct current, and power frequency refers to the frequency of the AC power of industrial usefulness, unit hertz (Hz).Iron core mainly is the silicon steel sheet that adopts, bulky, seem very heavy, because output current is to control by the size of thyristor operating angle, its bad dynamic performance, control precision are not high, the transformer conversion efficiency that frequency is low is low, the volume that transformer need to be done is very large, and frequency high transformer efficient is just high, and its transformer can be very little.
Although medium-frequency inverting resistance welding machine occurs at present, the operating frequency of transformer is risen to about 2000HZ by 50HZ, intermediate frequency transformer all reduces to some extent than the volume and weight of Industrial Frequency Transformer, and it is bigger than normal that its volume and weight still shows.The operating frequency of medium/high frequency transformer can be operated between 1000 to 20000HZ, because the raising of transformer operating frequency, thereby has reduced the volume and weight of transformer, have better dynamic response and more high control precision, more be applicable to the welding of aluminium.
There is following shortcoming in the tradition intermediate frequency transformer: be difficult to work in the above operating frequency of 5000HZ, along with the raising of frequency and power output, the temperature rise of transformer is very high, and output current diminishes, rectifier diode very easily damages simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of medium/high frequency transformer, it is less to have a volume and weight, and the better advantage of heat dispersion in the time of high operating frequency has been simplified the manufacture craft of elementary line group, has improved efficient.
For achieving the above object, the present invention realizes by following technical scheme:
A kind of medium/high frequency transformer is provided, and described main transformer comprises magnetic core, armature winding and secondary winding; The centre of described armature winding is three to 11 groups of elementary line bags, wherein forms one group of elementary line bag by two identical series connection with forward and reverse line bag that turns to of the number of turn, has two leading-out terminals; Described armature winding end positions also is respectively equipped with one group of elementary little line bag, with two groups of elementary little line bag series connection, has two leading-out terminals; The Same Name of Ends of all leading-out terminals in the armature winding is linked, i.e. parallel connection is two input terminals of main transformer; Described secondary winding comprises one to five group of secondary wire bag and the centre cap of drawing from each secondary wire bag, it is that parallel connection obtains two leading-out terminals that the Same Name of Ends of two leading-out terminals of all secondary wire bags is connected, connect respectively the first lead-out terminal that merges behind the diode as main transformer, centre cap is as the second lead-out terminal of main transformer.
Above-described medium/high frequency transformer, wherein, the described elementary line bag of main transformer by the wide 2～6mm of being, thick be that the insulation copper strips coiling of 0.2～0.8mm forms.The iron core that described magnetic core is made by two secondary CD type nanocrystalline materials.
Above-described medium/high frequency transformer, wherein, described rectification radiator comprises the first output board, diode gusset piece, the second output board, rebound and planar diode; Described secondary winding generation current after the planar diode rectification, is connected to the first output board by the diode gusset piece, and electric current is exported by the first output board; Described the first output board both sides are provided with two planar diodes, are respectively the diode gusset pieces in the outside of two planar diodes, and two diode gusset pieces are connected to respectively two leading-out terminals of secondary winding by the secondary lead flange; Described the second output board is connected with centre cap by rebound.
Above-described medium/high frequency transformer, wherein, described two planar diodes, two diode gusset pieces and the first output board compress by the butterfly spring assembly.Be provided with the diode supporting bracket between described diode gusset piece and the first output board, the diode supporting bracket prevents from damaging when the butterfly spring component pressure is excessive planar diode.
Above-described medium/high frequency transformer, wherein, the inside of the first output board of described rectification radiator, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board all is provided with the limbers.
Above-described medium/high frequency transformer, wherein, described secondary wire bag is comprised of the copper pipe coiling of water flowing, flows through cooling water in the copper pipe, and elementary line packs tightly by copper pipe, and the part heat that produces is taken away; All limbers and copper pipe are linked up, form the heat radiation water channel of medium/high frequency transformer.
Above-described medium/high frequency transformer, wherein, the flow path of the cooling water in the described heat radiation water channel is: cooling water enters from the first output board water inlet, crossing aquaporin by plastic cement is divided into four the tunnel and enters two diode gusset pieces, divide respectively two-way to enter the limbers of secondary lead flange by two diode gusset pieces again, flow into the copper pipe of the secondary winding of main transformer, be summarized in again centre cap and the centre cap flange of main transformer by each group copper pipe, import again rebound and enter the second output board, flow out from the second output board delivery port, wherein cooling water can reverse flow.
Above-described medium/high frequency transformer, wherein, described the first output board, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board all adopt the copper plate of conduction to make.
The beneficial effect of technical solution of the present invention is: adopt two plane rectifier diodes under medium-high frequency, output current can reach 20000A; Iron core has adopted CD type nanocrystalline material, and thermal endurance class has been brought up to the F level; Significantly reduce volume of transformer and weight, improved output current and power output; Greatly improve the water-cooled effect, reduced the temperature rise of medium/high frequency transformer; Adopted in parallel and each the line bag of many groups of elementary line bags to be formed by the little line bag that two reverse from inside to outside coilings that wait circle are connected again.So that elementary line packs tightly by the secondary cooling copper pipe, increased like this degree of coupling of primary and secondary, improved elementary heat-sinking capability, simplified elementary line bag and manufacture craft and production efficiency.
Description of drawings
Fig. 1 is the electrical principle schematic diagram of the medium/high frequency transformer in the embodiment of the invention.
Fig. 2 is the medium/high frequency transformer perspective view in the embodiment of the invention.
Fig. 3 is the medium/high frequency transformer side structure schematic diagram among Fig. 2.
Fig. 4 is that medium/high frequency transformer among Fig. 3 is along the profile of E-E face.
Fig. 5 is the flow schematic diagram of the cooling water of the medium/high frequency transformer in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment technical scheme of the present invention is described in more detail.
The medium/high frequency transformer of present embodiment is comprised of main transformer and rectification radiator two large divisions, and both are separable.The iron core of main transformer is made of two pairs of CD type nanocrystalline materials, armature winding is composed in parallel by seven groups of elementary line bags and two groups of elementary little line bags, secondary winding is formed by the water flowing copper pipe coiling of four groups of full-wave rectifications, and the rectification radiator mainly is comprised of planar diode and the heat radiation water channel of two high frequencies.
With reference to accompanying drawing 1, shown in Figure 2, main transformer comprises iron core 10, armature winding and the secondary winding of two pairs of CD type nanocrystalline materials, armature winding comprises two groups of elementary little line bags that are positioned at two ends, 11 and 19 all is elementary little line bag among the figure, two elementary little line bags are connected, respectively be the n/2 circle, wherein n is the main transformer primary turns, and its leading-out terminal is A and B; Armature winding also comprises seven groups of elementary line bags that are positioned at two groups of elementary little line bag centres, 12,13,14,15,16,17 and 18 is elementary line bag among the figure, every group of elementary line bag is by two forward and reverse coilings of line bag, respectively behind the n/2 circle, connect, form an elementary line bag, having two leading-out terminals is A and B, and then the Same Name of Ends A of all elementary leading-out terminals being linked becomes the total input terminal A of main transformer, and Same Name of Ends B links becomes the total input terminal B of main transformer.Elementary line bag and elementary little line bag all by wide be 2～6 millimeters, thick is that the copper strips coiling of 0.2～0.8 millimeter high-temperature insulation forms.
Secondary winding comprises four groups of secondary wire bags, among the figure 21,22,23 and 24 is the secondary wire bag, every group of secondary wire bag all is provided with leading-out terminal C and D on two, and the centre cap 25 of drawing from the secondary wire bag, each secondary wire bag is two circles, all leading-out terminal Same Name of Ends C are linked as the leading-out terminal C of secondary winding, all leading-out terminal Same Name of Ends D link as the leading-out terminal D of secondary winding, be connected the planar diode of rectification in the respectively connection with D at C after, merging links together as the first lead-out terminal of main transformer, with second lead-out terminal of centre cap as main transformer.
The rectification radiator with reference to Fig. 2, Fig. 3, shown in Figure 4 shown in, comprise the second output board 31, two rebounds 32, the first output board 33, two diode gusset pieces 34, two fast planar diode 35 and heat radiation water channels, the both sides of the first output board 33 are provided with two planar diodes 35 and are connected, be respectively that diode gusset piece 34 is connected in the outside of two planar diodes, two diode gusset pieces 34 are electrically connected to respectively two leading-out terminal C and the D of secondary winding by secondary lead flange 38; Two planar diodes, two diode gusset piece the first output boards compress by butterfly spring assembly 36, diode supporting bracket 37 is arranged between the first output board and the diode gusset piece, is used for preventing damaging when the butterfly spring component pressure is excessive planar diode 35.The second output board 31 is electrically connected with centre cap 25 by two rebounds 32, the centre cap flange 251 that is installed in respectively rectification radiator both sides.
An example as present embodiment, export as positive pole with the first output board, the second output board is exported as negative pole, the first defeated output board is connected to the negative pole of planar diode, the diode gusset piece is connected with the positive pole of planar diode, the secondary winding generation current enters by the positive pole of diode gusset piece from planar diode, is connected to the first output board after rectification, and electric current is exported by the first output board.
The secondary wire bag is comprised of the water flowing copper pipe of full-wave rectification, flows through cooling water in the water flowing copper pipe, and elementary line packs tightly by copper pipe, and the part heat that produces is taken away; The inside of the first output board, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board is provided with the limbers, and all limbers and copper pipe are linked up, and forms the heat radiation water channel of rectification radiator.
With reference to shown in Figure 5, the flow path of the cooling water in the heat radiation water channel of rectification radiator is as follows: cooling water enters and is divided into four the tunnel from rectification radiator the first output board water inlet, cross the diode gusset piece plate that aquaporin enters respectively two planar diodes by plastic cement, imported again the connecting flange limbers of diode gusset piece by two water channels of diode gusset piece, enter main transformer secondary lead flange to many groups copper pipe of secondary winding, be summarized in main transformer centre cap and centre cap flange by each group copper pipe again, enter the second output board by rectification radiator rebound again, delivery port by the second output board flows out, wherein cooling water can reverse flow, and cooling water flow is controlled at 6 liter/mins more than the clock.
The first output board, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board all adopt the copper plate of conduction to make.Between planar diode and the first output board, the diode connecting plate, between two flanges enough pressure and good contacting will be arranged, especially flange contact facings wants enough large, and have enough pressure can reduce contact resistance like this, and reduce loss and failure rate, improve the reliability of device.
Claims (10)
1. a medium/high frequency transformer comprises main transformer and rectification radiator, and it is characterized in that: described main transformer comprises magnetic core, armature winding and secondary winding; The centre of described armature winding is three to 11 groups of elementary line bags, wherein forms one group of elementary line bag by two identical series connection with forward and reverse line bag that turns to of the number of turn, has two leading-out terminals; Described armature winding end positions also is respectively equipped with one group of elementary little line bag, with two groups of elementary little line bag series connection, has two leading-out terminals; The Same Name of Ends of all leading-out terminals in the armature winding is linked, i.e. parallel connection is two input terminals of main transformer; Described secondary winding comprises one to five group of secondary wire bag and the centre cap of drawing from each secondary wire bag, it is that parallel connection obtains two leading-out terminals that the Same Name of Ends of two leading-out terminals of all secondary wire bags is connected, connect respectively the first lead-out terminal that merges behind the diode as main transformer, centre cap is as the second lead-out terminal of main transformer.
2. medium/high frequency transformer according to claim 1, it is characterized in that: described elementary line bag is formed by the insulation copper strips coiling of the wide 2～6mm of being, the thick 0.2～0.8mm of being.
3. medium/high frequency transformer according to claim 1 is characterized in that: the iron core that described magnetic core is made by two secondary CD type nanocrystalline materials.
4. the described medium/high frequency transformer of Arbitrary Term according to claim 1～3, it is characterized in that: described rectification radiator comprises the first output board, diode gusset piece, the second output board, rebound and planar diode; Described secondary winding generation current after the planar diode rectification, is connected to the first output board by the diode gusset piece, and electric current is exported by the first output board; Described the first output board both sides are provided with two planar diodes, are respectively the diode gusset pieces in the outside of two planar diodes, and two diode gusset pieces are connected to respectively two leading-out terminals of secondary winding by the secondary lead flange; Described the second output board is connected with centre cap by rebound.
5. medium/high frequency transformer according to claim 4 is characterized in that: described two planar diodes, two diode gusset pieces and the first output board compress by the butterfly spring assembly.
6. medium/high frequency transformer according to claim 5 is characterized in that: be provided with the diode supporting bracket between described diode gusset piece and the first output board, the diode supporting bracket prevents from damaging when the butterfly spring component pressure is excessive planar diode.
7. medium/high frequency transformer according to claim 4, it is characterized in that: the inside of the first output board of described rectification radiator, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board all is provided with the limbers.
8. medium/high frequency transformer according to claim 7, it is characterized in that: described secondary wire bag is comprised of the copper pipe coiling of water flowing, flows through cooling water in the copper pipe, and elementary line packs tightly by copper pipe, and the part heat that produces is taken away; All limbers and copper pipe are linked up, form the heat radiation water channel of rectification radiator.
9. medium/high frequency transformer according to claim 8, it is characterized in that: the flow path of the cooling water in the described heat radiation water channel is: cooling water enters from the first output board water inlet, crossing aquaporin by plastic cement is divided into four the tunnel and enters two diode gusset pieces, divide respectively two-way to enter the limbers of secondary lead flange by two diode gusset pieces again, flow into the copper pipe of the secondary winding of main transformer, be summarized in again centre cap and the centre cap flange of main transformer by each group copper pipe, import again rebound and enter the second output board, flow out from the second output board delivery port, wherein cooling water can reverse flow.
10. medium/high frequency transformer according to claim 4, it is characterized in that: described the first output board, diode gusset piece, secondary lead flange, centre cap, centre cap flange, rebound and the second output board all adopt the copper plate of conduction to make.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310332748.7A CN103366932B (en) | 2013-08-02 | 2013-08-02 | Medium/high frequency transformer |
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| CN201310332748.7A CN103366932B (en) | 2013-08-02 | 2013-08-02 | Medium/high frequency transformer |
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| CN103366932B CN103366932B (en) | 2016-01-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016154793A1 (en) * | 2015-03-27 | 2016-10-06 | 深圳市鸿栢科技实业有限公司 | Inverter direct-current resistance welding machine high-frequency transformer |
| CN106057443A (en) * | 2015-04-08 | 2016-10-26 | 李尔公司 | Cooling method for planar electrical power transformer |
| US10147531B2 (en) | 2015-02-26 | 2018-12-04 | Lear Corporation | Cooling method for planar electrical power transformer |
| CN109473263A (en) * | 2018-12-12 | 2019-03-15 | 中国工程物理研究院流体物理研究所 | A kind of high frequency high voltage transformer module |
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
| CN112820515A (en) * | 2021-01-08 | 2021-05-18 | 合肥三宇电器有限责任公司 | Power supply device for low-voltage large current |
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| CN1873856A (en) * | 2006-06-21 | 2006-12-06 | 徐福智 | Transformer of welding source with multiple characteristics |
| CN101352782A (en) * | 2008-09-05 | 2009-01-28 | 深圳市鸿栢科技实业有限公司 | Stud welder and stud welder high-frequency transformator |
| WO2011116544A1 (en) * | 2010-03-23 | 2011-09-29 | 深圳市鸿栢科技实业有限公司 | Resistance welding high frequency transformer and spot welding machine |
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2013
- 2013-08-02 CN CN201310332748.7A patent/CN103366932B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873856A (en) * | 2006-06-21 | 2006-12-06 | 徐福智 | Transformer of welding source with multiple characteristics |
| CN101352782A (en) * | 2008-09-05 | 2009-01-28 | 深圳市鸿栢科技实业有限公司 | Stud welder and stud welder high-frequency transformator |
| WO2011116544A1 (en) * | 2010-03-23 | 2011-09-29 | 深圳市鸿栢科技实业有限公司 | Resistance welding high frequency transformer and spot welding machine |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10147531B2 (en) | 2015-02-26 | 2018-12-04 | Lear Corporation | Cooling method for planar electrical power transformer |
| WO2016154793A1 (en) * | 2015-03-27 | 2016-10-06 | 深圳市鸿栢科技实业有限公司 | Inverter direct-current resistance welding machine high-frequency transformer |
| CN107210121A (en) * | 2015-03-27 | 2017-09-26 | 深圳市鸿栢科技实业有限公司 | Inversion direct current resistance welder high frequency transformer |
| CN106057443A (en) * | 2015-04-08 | 2016-10-26 | 李尔公司 | Cooling method for planar electrical power transformer |
| CN106057443B (en) * | 2015-04-08 | 2018-09-11 | 李尔公司 | The cooling means of plane power transformer |
| CN109473263A (en) * | 2018-12-12 | 2019-03-15 | 中国工程物理研究院流体物理研究所 | A kind of high frequency high voltage transformer module |
| CN109473263B (en) * | 2018-12-12 | 2024-04-16 | 中国工程物理研究院流体物理研究所 | High-frequency high-voltage transformer module |
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
| CN112820515A (en) * | 2021-01-08 | 2021-05-18 | 合肥三宇电器有限责任公司 | Power supply device for low-voltage large current |
| CN112820515B (en) * | 2021-01-08 | 2022-03-11 | 合肥三宇电器有限责任公司 | Power supply device for low-voltage large current |
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| CN103366932B (en) | 2016-01-13 |
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