CN2222029Y

CN2222029Y - Ring core transformer ac electric welding machine

Info

Publication number: CN2222029Y
Application number: CN 95233145
Authority: CN
Inventors: 刘绍明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-25
Filing date: 1995-01-25
Publication date: 1996-03-13
Anticipated expiration: 2005-01-25

Abstract

The utility model relates to an AC electric welding machine with a ring core transformer, which is mainly composed of a casing, a transformer and cooling oil. The utility model is characterized in that a transformer is arranged in the casing, the casing is fully filled with cooling oil, and the transformer is soaked in the cooling oil. A ring-shaped iron core is adopted by the transformer particularly, a primary winding is uniformly wound and abutted on the iron core, and a secondary winding is uniformly wound around the outside of the primary winding. The utility model has the advantages of the reduction of the material input of the iron core and the windings, light weight, low cost, little possibility of magnetic leakage, reduction of an exciting current, energy saving, simple structure, easy production, convenient operation and high safety. The utility model is suitable for the uses of township enterprises and individual producers.

Description

A kind of toroidal transformer A.C. welder

The utility model relates to electric welding technical field and transformer technology field, particularly a kind of toroidal transformer A.C. welder.

Power transformer is the core part of electric welding equipment, and especially in some simple and easy welding equipment, power transformer itself is exactly an ac arc welder the simplest.As everyone knows, transformer has variety classes and purposes.With regard to power transformer, its main composition partly is iron core, elementary winding and secondary winding.The primary and secondary winding of shell type transformer is all in the center pinch of E shape iron core.The primary and secondary winding of core type transformer can be respectively on relative two stem stems of square iron core; Primary and secondary winding also can reduce leakage field so respectively around half on two stem stems.Under same power, core type transformer is more in light weight than shell type transformer.Power transformer in the welding equipment generally all is a core type transformer.Welding current is that 140-200A, output voltage are that 50V-80V, no-load current are that the ac arc wedling machine transformer weight of 3A is 50-60kg.Iron core weight 30-40kg wherein, winding flat type copper wire weight 10-12kg.So heavy transformer, it is inconvenient that electric welding machine is used, and make the electric welding machine manufacturing cost higher.Because its no-load current is higher, just makes that its copper loss and iron loss are bigger, is unfavorable for saving electric energy.Patent documentation had many electric welding machine patented products in recent years by retrieval, for example: 92206947,93231341,2176864Y, 2178582Y etc. are because all not from according to last change, still there is above-mentioned weak point in its transformer.

The purpose of this utility model just is at the above-mentioned shortcoming and defect part of prior art, transformer to electric welding machine is improved, its iron core silicon steel sheet and winding copper cash consumption are further reduced, thereby further weight reduction and reduction manufacturing cost, further reduce copper loss, iron loss, leakage field etc. simultaneously, save electric energy more.

Above-mentioned purpose of the present utility model is realized by following technical proposals:

This electric welding machine is made up of casing, change over switch, indicator light, power-line terminal, output wiring terminal, transformer.Change over switch, indicator light, binding post all are installed on the casing top board.Transformer is installed in casing inside.Its maximum characteristics are transformer adopting annular cores, are full of cold oil in the casing, and transformer integral body is immersed in the cold oil.The design feature of toroidal transformer is that elementary winding is near the uniform winding of annular core, winding displacement not more than two layers.The uniform elementary winding outside that is wrapped in of secondary winding.Between winding and the iron core, between winding and the winding, all add the insulating barrier insulation between winding layers.

The annular core of above-mentioned transformer adopts long band shape silicon steel sheet to be rolled into, and perhaps adopts the disc silicon steel sheet to build up.Its center window diameter 100-120mm, external diameter 170-200mm, its thickness 80-110mm.

The elementary winding of above-mentioned transformer is totally 380-480 circles, adopts enamel covered wire, and three taps are arranged except that the first and last end.First tap is used for the 220V power supply.Second tap is used for the big electric current of 380V power supply, and the 3rd tap is used for 380V power supply electric current, and the termination is not used for the little electric current of 380V power supply.Each tap links to each other with each grade of change over switch respectively.

Above-mentioned Secondary winding of transformer is 50-60 circles, adopts and moulds skin multiply aluminium stranded conductor, perhaps flat type copper wire.

Owing to adopted above-mentioned annular core transformer, and primary and secondary winding is all uniform closely to be wrapped on the annular core circumference, elementary winding winding displacement not more than two layers, and the every circle of particularly elementary winding all twines near iron core, so leakage field significantly reduces, winding copper cash total length shortens greatly; Also because the annular core magnetic circuit is shorter, and no longer include air gap in the magnetic circuit, so further reduced magnetic resistance.Therefore, exciting curent reduced to some extent than originally, still can produce enough big main flux, made annular core reach the magnetic saturation degree.Exciting curent reduce shortening with elementary winding copper cash total length, help reducing copper loss again.The transformer of this version more helps heat radiation, but long time continuous working.Original electric welding machine contrast of the utility model and equal-wattage alleviates 60% through the actual measurement total weight, and silicon steel sheet saves 75%, and elementary winding copper cash saves 88%, and no-load current reduces 50%, and output voltage reduces by 40%, and power consumption reduces by 15%.The manufacturing of this electric welding machine is very easy to, and easy to use, reliable operation both can be done arc welder usefulness, can do butt welding machine usefulness again, is subjected to township enterprise and the individual maintenance personal of production favor especially.

Accompanying drawing 1 is an external form schematic diagram of the present utility model.

Accompanying drawing 2 is its toroidal transformer structural representations.

Accompanying drawing 3 is that its transformer annular core is rolled into the formula schematic diagram.

Accompanying drawing 4 is that its transformer annular core builds up the formula schematic diagram.

Accompanying drawing 5 is electrical schematic diagrams of the present utility model.

Details are as follows to the utility model embodiment in conjunction with the accompanying drawings:

Among Fig. 1,1 casing, the 2nd, power-line terminal, the 3rd, change over switch, the 4th, indicator light, the 5th, output wiring terminal.They all are installed on the top panel of electric welding machine casing 1.Transformer 7 is installed in electric welding machine casing 1 inside, and insulating pad 9 is arranged at the bottom, uses fixed block 8 jam-packs all around, and casing inside is full of transformer cold oil 6.

Among Fig. 2, the 10th, the annular core of transformer, the 11st, elementary winding, present embodiment adopts the enamel covered wire coiling of Φ 0.96.The 12nd, secondary winding, present embodiment adopt 25mm to mould the skin aluminium stranded conductor and cast.The 13rd, the insulating barrier between iron core and the elementary winding, the 14th, the insulating barrier between primary and secondary also has insulating barrier between winding layers.The insulating barrier of present embodiment adopts insulating paper.

Fig. 3 is the annular core that is rolled into formula.The 4th, build up the annular core of formula.Adopt the D0.35 silicon steel sheet, weight 7.5kg.Its center window diameter (Φ 1) 105mm, external diameter (Φ 2) 180mm, thickness (b) 100mm.

Among Fig. 5, B (10) is a ring transformer cores.N ₁(11) be elementary winding, totally 440 circles.N ₂(12) be secondary winding, 55 circles.N ₃Be 6 volts of windings of indicator light special use.K (3) is a change over switch.ZD (4) is an indicator light.220V or 380V AC power are by binding post (2) and change over switch K (3) and primary winding N ₁(11) connect.If power supply is 220V, K (3) is pushed n ₁Shelves.If power supply is 380V, and require welding current bigger, K (3) is pushed n ₂Shelves.If power supply is 380V, and require the welding electricity medium, K (3) pushes n ₃Shelves.If require the welding current minimum, K (3) pushes n ₄Shelves.Secondary winding N ₂Link to each other with the welding circuit cable by output wiring terminal (5).

This electric welding machine structure is very simple, makes to be very easy to, and can produce by hand, and result of use is satisfactory.

Claims

1. toroidal transformer A.C. welder, by casing, change over switch, indicator light, binding post, transformer is formed, change over switch, indicator light, binding post all is installed on the casing top board, transformer is installed in casing inside, it is characterized in that the transformer adopting annular core, be full of cold oil in the casing, transformer integral body is immersed in the cold oil, the elementary winding of transformer is near the uniform winding of annular core, the winding displacement not more than two layers, the uniform elementary winding outside that is wrapped in of secondary winding is between winding and the iron core, between winding and the winding, all add the insulating barrier insulation between winding layers.

2. toroidal transformer A.C. welder according to claim 1, it is characterized in that the transformer annular core adopts long band shape silicon steel sheet to be rolled into, or adopt the disc silicon steel sheet to build up its center window diameter 100-120mm, external diameter 170-200mm, thickness 80-110mm.

3. toroidal transformer A.C. welder according to claim 1, the elementary winding that it is characterized in that transformer is totally 380-480 circles, adopt enamel covered wire, three taps are arranged in the middle of except that the first and last end, be respectively applied for 220V power supply or 380V power supply, under 380 power supply situations, can be divided into large, medium and small current gear again.

4. toroidal transformer A.C. welder according to claim 1 is characterized in that Secondary winding of transformer is 50-60 circles, adopts and moulds skin multiply aluminium stranded conductor or flat type copper wire.