CN201616333U

CN201616333U - Arc welding transformer capable of saving magnet wires

Info

Publication number: CN201616333U
Application number: CN2009202808972U
Authority: CN
Inventors: 梁佑平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-15
Filing date: 2009-12-15
Publication date: 2010-10-27
Anticipated expiration: 2019-12-15

Abstract

The utility model discloses an arc welding transformer, particularly to an arc welding transformer capable of saving magnet wires, which comprises an iron core, a primary coil and a secondary coil that are mounted therein, and is characterized in that the primary coil comprises a coil A, a coil B and a coil C that are independent, and the primary coil is connected with a switch with the double-pole double-throw function. The primary coil of the arc welding transformer can save at least 20 percent of magnet wire as compared with that of the conventional arc welding transformers, thereby reducing the cost without affecting normal operation of the arc welding transformer; moreover, the use is convenient.

Description

A kind of arc welding transformer of saving electromagnetic wire

(1) technical field

The utility model relates to a kind of arc welding transformer, particularly a kind of arc welding transformer of saving electromagnetic wire.

(2) background technology

Now the electric welding machine kind is a lot, but senior arc welding transformer is still the electric welding machine of extensive use, reason just be arc welding transformer have simple in structure, with low cost, easy to manufacture, failure rate is low, advantage such as easy to maintenance.

The power line of arc welding transformer is generally long, so the power loss on the power line can not be ignored.Under the condition identical at power line, that power output is also identical, the power of loss on power line 3 times when using 380 volts of power supplys when using 220 volts of power supplys.Thereby arc welding transformer uses 380 volts of power supplys as far as possible when 380 volts of power supplys are arranged, but when not having 380 volts of power supplys, have to use 220 volts of power supplys.So arc welding transformer generally is designed to be suitable for 220 volts and 380 volts of two kinds of power supplys.Existing arc welding transformer is for being suitable for two kinds of power supplys, and primary has been used two coils: first kind of design is that 220 hint circles and 380 hint circles are independent separately, and the disadvantage of this design is the serious waste electromagnetic wire; Second kind of design is to connect a main coil between 0 volt of end and 220 volts of ends, connects an auxiliary winding between 220 volts of ends and 380 volts of ends.Main coil is exactly a transformer when using 220 volts of power supplys, and when using 380 volts of power supplys main coil and auxiliary winding series connection back as the transformer primary winding.

If elementary rated current was I when arc welding transformer used 380 volts of power supplys, then the rated power capacity of two coils is 380I in first kind of design, and the total power capacity of primary coil is 760I.And the rated current of main coil is 1.732I in second kind of design, thereby the rated power capacity of main coil numerically is 220 to multiply by 1.732I and approximate 380I, and the rated power capacity of auxiliary winding equals 160I, so the total power capacity of primary coil is 540I.Obviously, second kind of design reduced the total power capacity of primary coil than first kind of design.But when practical application, no matter use 220 volts of power supplys also to be to use 380 volts of power supplys, the elementary rated power of arc welding transformer has only 380I, so, no matter existing arc welding transformer primary coil adopts first kind of design still to adopt second kind of design, and the waste of its power capacity is all too big.When transformer core was constant, the weight of the used electromagnetic wire of transformer primary winding is approximate to be directly proportional with the rated power capacity, so existing arc welding transformer has been wasted electromagnetic wire.As long as and we manage to reduce the total rated power capacity of arc welding transformer primary coil, just can save electromagnetic wire.

(3) summary of the invention

The utility model provides a kind of arc welding transformer of the saving electromagnetic wire that can reduce cost in order to remedy the defective of prior art.

The utility model is achieved by the following technical solution:

A kind of arc welding transformer of saving electromagnetic wire comprises being installed in its inner iron core, primary coil and secondary coil that it is characterized in that: the switch with dpdt double-pole double-throw (DPDT) function is formed and be connected to primary coil by three absolute coil A, coil B with coil C.

This saves the arc welding transformer of electromagnetic wire, and the rated current of loop A equals the elementary rated current of arc welding transformer when input voltage is 220 volts, and the rated current of coil B and coil C equals the elementary rated current of arc welding transformer when input voltage is 380 volts; The rated voltage of loop A is 60 volts, and the rated voltage of coil B and coil C is 160 volts; Coil B and coil C take with same specification electromagnetic wire two-wire and around the mode coiling; Switch with dpdt double-pole double-throw (DPDT) function is dpdt double-pole double-throw (DPDT) knife switch, HZ15 change over switch or HZ10 change over switch.

The beneficial effects of the utility model are: the arc welding transformer primary coil of this saving electromagnetic wire is saved 20% electromagnetic wire at least than the primary coil of existing arc welding transformer, and can reduce cost and do not influence the operate as normal of arc welding transformer, and also easy to use.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing 1 is saved the structural representation of the arc welding transformer of electromagnetic wire for the utility model.

Among the figure, 1 loop A, 2 coil B, 3 coil C, 4 have the switch of dpdt double-pole double-throw (DPDT) function, 5 iron cores, 6 secondary coils.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present utility model.This saves the arc welding transformer of electromagnetic wire, comprise and be installed in its inner iron core 5, primary coil and secondary coil 6, it is characterized in that: primary coil is by three absolute coil A1, coil B2 forms and is connected the switch 4 with dpdt double-pole double-throw (DPDT) function with coil C3, the rated current of loop A 1 equals the elementary rated current of arc welding transformer when input voltage is 220 volts, the rated current of coil B2 and coil C3 equals the elementary rated current of arc welding transformer when input voltage is 380 volts, the rated voltage of loop A 1 is 60 volts, and the rated voltage of coil B2 and coil C3 is 160 volts; Coil B2 and coil C3 take with same specification electromagnetic wire two-wire and around the mode coiling, purpose is that the inductance value of coil B2 and coil C3 and resistance are equated as far as possible; Switch 4 with dpdt double-pole double-throw (DPDT) function is dpdt double-pole double-throw (DPDT) knife switch, HZ15 change over switch or HZ10 change over switch.

This saves the arc welding transformer of electromagnetic wire, when double-point double-throw switch is connected c1b1 and c2b2, connects with loop A 1 after coil B2 and the coil C3 parallel connection again, is applicable to 220 volts of power supplys; When double-point double-throw switch was connected c1a1 and c2a2, loop A 1, coil B2 and coil C3 connected, and at this moment are applicable to 380 volts of power supplys.If the elementary rated current of arc welding transformer is I when using 380 volts of power supplys, then three loop A 1, coil B2 and coil C3 should be by following design data: the rated current of loop A 1 is 1.732I, rated voltage is 60 volts, coil B2 is identical with the data of coil C3, rated current all is I, and rated voltage all is 160 volts.According to above data as can be seen, the rated power capacity of loop A 1 numerically is 60 to multiply by 1.732I and approximate 104I, and the rated power capacity of coil B2 and coil C3 numerically is equal to 160I, thereby three total rated power capacity of coil are 424I.And the 424I minimum specified power capacity 540I more total than existing arc welding transformer primary coil is little by 20%, so the comparable existing primary coil of the arc welding transformer of 220 volts and 380 volts two kinds of power supplys that is applicable to of primary coil of the present utility model is saved 20% electromagnetic wire at least.

The utility model can be by general design procedure in when design, but can be directly to the primary coil that has arc welding transformer now change around.For example, designing a kind of is that 20% o'clock rated welding current is 120 the utility model of pacifying at rated duty cycle, can directly use the iron core and the secondary coil of BX6-120 type arc welding transformer fully, and to its primary coil change around computational methods as follows: in the primary coil of BX6-120 type arc welding transformer, the conductor size of 220 hint circles is 1.0 millimeters and takes advantage of 5.1 millimeters, the number of turn is 318 circles, the conductor size of 380 hint circles is 1.35 millimeters and takes advantage of 2.1 millimeters, the number of turn is 550 circles, thereby change conductor size around later loop A 1 and be 1.0 millimeters and take advantage of 5.1 millimeters, the number of turn is that 60 and 220 ratio multiply by 318 and approximates 87 circles, the conductor size of coil B2 and coil C3 is 1.35 millimeters and takes advantage of 2.1 millimeters, and the number of turn is 160 and 380 ratio and multiply by 550 and approximate 232 circles.In use, supply terminals can be fixedly connected, and can weld as long as according to supply voltage double-point double-throw switch is pushed 220 volts or 380 volts of positions.

Claims

1. arc welding transformer of saving electromagnetic wire, comprise being installed in its inner iron core (5), primary coil and secondary coil (6), it is characterized in that: the switch (4) with dpdt double-pole double-throw (DPDT) function formed and is connected by primary coil by three absolute coil A (1), coil B (2) and coil C (3).

2. the arc welding transformer of saving electromagnetic wire according to claim 1 is characterized in that: coil B (2) and coil C (3) take with same specification electromagnetic wire two-wire and around the mode coiling.

3. the arc welding transformer of saving electromagnetic wire according to claim 1 is characterized in that: the switch (4) with dpdt double-pole double-throw (DPDT) function is dpdt double-pole double-throw (DPDT) knife switch, HZ15 change over switch or HZ10 change over switch.