CN208895357U - A kind of arc striking circuit for the welding machine that generates electricity - Google Patents
A kind of arc striking circuit for the welding machine that generates electricity Download PDFInfo
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- CN208895357U CN208895357U CN201821030011.4U CN201821030011U CN208895357U CN 208895357 U CN208895357 U CN 208895357U CN 201821030011 U CN201821030011 U CN 201821030011U CN 208895357 U CN208895357 U CN 208895357U
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Abstract
The utility model relates to the internal circuit fields for the welding machine that generates electricity, disclose a kind of arc striking circuit of welding machine that generates electricity, including exciting current module, welding current module and relay, exciting current module, including excitation winding, single-phase rectifier unit, resistance unit, rotor windings；Welding current module, DC winding, three phase rectifier unit；Resistance unit includes rotor windings and potentiometer RP, resistance R；The coil of relay is electrically connected with three phase rectifier unit, the contact both ends of relay are electrically connected with resistance R and potentiometer RP respectively, the utility model has the following advantages that and effect: this programme utilizes new mechanical structure, pass through setting relay and resistance R, when when being welded, voltage reduces three phase rectifier unit, resistance R is linked into circuit by relay, so that in parallel between resistance R and potentiometer RP, the resistance value in circuit reduces, so that current boost, short circuit current rises, and improves the characteristic of short circuit current, so that welding rod can rapid arcing.
Description
Technical field
The utility model relates to a kind of internal circuits of welding machine that generates electricity, more specifically, it relates to a kind of power generation welding machine
Arc striking circuit.
Background technique
Power generation welding machine is the machine of generator Yu electric welding machine one, and generator issues electric current by rotation and directly drives welding machine
It works, generally has petrol power, diesel two the most frequently used, subsidiary small-power accessory power supply can drive illumination etc.
Low-power equipment.
Currently, outer the dragging property when Current Voltage of power generation welding machine declines steep characteristic and current low voltage, be by motor around
The design of group.Although the design of winding can improve above-mentioned characteristic, since there are mismachining tolerance, each winding is completed
Winding can be had a certain difference with original design, cause the winding of motor can not be preferably to the characteristic of short circuit current
Improved.
Utility model content
In view of the deficienciess of the prior art, having the utility model lies in that providing a kind of arc striking circuit of welding machine that generates electricity
Improve the effect of short circuit current characteristic.
To achieve the above object, the utility model provides following technical solution: a kind of arc striking circuit for the welding machine that generates electricity, packet
Exciting current module, welding current module and relay are included,
Exciting current module, including for exporting alternating current excitation winding, be used for what the excitation winding was electrically connected
The alternating current is converted into the single-phase rectifier unit of direct current, be electrically connected with the rectification unit for changing circuital current
The resistance unit of size, the rotor windings coupled with the welding current module；
Welding current module, including coupled with the rotor windings DC winding, be used for what the DC winding was electrically connected
The alternating current is converted into the three phase rectifier unit of direct current；
The resistance unit includes the current potential that both ends are electrically connected with the rotor windings and the single-phase rectifier unit respectively
Device RP, the resistance R in parallel with the potentiometer RP；
The coil of the relay is electrically connected with the three phase rectifier unit, the contact both ends of the relay respectively with electricity
Hinder R and potentiometer RP electrical connection.
By using above-mentioned technical proposal, excitation winding exports alternating current, after the rectification of single-phase rectifier unit, alternating current
Be converted into direct current, the electric current on rotor windings is identical as the electric current at potentiometer RP, rotor windings and DC winding coupled, DC around
The alternating current generated in group becomes direct current by three phase rectifier, and direct current is exported from three phase rectifier unit.Worker is welding
When connecing, if the voltage value at three phase rectifier unit reduces, the contact closure of relay at this time after the contact closure of relay, makes
Must be in parallel between resistance R and potentiometer RP, the all-in resistance in circuit becomes smaller at this time, and the electric current for passing through rotor windings increases,
So that the electric current of three phase rectifier unit output increases, improve the characteristic of short circuit current, so that welding rod can rapid arcing.
The utility model is further arranged to: the single-phase rectifier unit uses single phase bridge type rectifier circu.
By using above-mentioned technical proposal, single phase bridge type rectifier circu converts alternating current to direct current, while single-phase bridge
Formula rectification circuit all utilizes the positive-negative half-cycle of transformer, and power utilization rate is high.
The utility model is further arranged to: the DC winding uses star connection.
By using above-mentioned technical proposal, after star connection, conductor cross-section is big, and turns-in-series are small, and work phase voltage
Low, phase current is high, so that welding rod can rapid arcing.
The utility model is further arranged to: the relay is voltage relay.
By using above-mentioned technical proposal, voltage relay controls contact according to the voltage on three phase rectifier unit
System enables short circuit current to enhance when voltage reduces.
The utility model is further arranged to: the three phase rectifier unit include concatenated diode D1 and diode D2,
Concatenated diode D3 and diode D4, concatenated diode D5 and diode D6, the diode D1, diode D3, two poles
The anode of pipe D5 is electrically connected to each other, the diode D2, diode D4, diode D6 cathode mutually put connection, the DC around
Three beginnings of group are located in the connection for connecting midpoint, diode D3 and diode D4 of diode D1 and diode D2
The connection midpoint of point, diode D5 and diode D6.
By using above-mentioned technical proposal, three phase rectifier unit converts alternating current to direct current by 6 diodes.
The utility model is further arranged to: one end of the coil of the relay simultaneously with the diode D1, two poles
The anode electrical connection of pipe D3, diode D5, the other end while the negative electricity with the diode D2, diode D4, diode D6
Connection.
By using above-mentioned technical proposal, the coil of relay is worked by voltage at three phase rectifier unit output,
Make contact that can make variation according to voltage, timely increases short circuit current.
The utility model is further arranged to: the potentiometer RP includes resistor body and brush, the both ends of the resistor body
It is electrically connected respectively with rotor windings and single-phase rectifier unit, the brush and the one end of the resistor body far from the rotor windings
Electrical connection.
By using above-mentioned technical proposal, by changing the position of potentiometer RP brush, worker can carry out welding current
Control, so that welding current meets job requirement.
The utility model is further arranged to: the rotor windings anode connect with the resistor body, cathode with it is described
The connection of single-phase rectifier unit.
By using above-mentioned technical proposal, rotor windings intercouple with DC winding, and the conveying of electric energy is carried out by induction.
In conclusion the utility model has the following beneficial effects:
1, by setting relay and resistance R, when being welded, voltage reduces three phase rectifier unit, relay will
Resistance R is linked into circuit, so that in parallel between resistance R and potentiometer RP, the resistance value in circuit is reduced, so that electric current mentions
It rises, short circuit current rises, and improves the characteristic of short circuit current, so that welding rod can rapid arcing.
Detailed description of the invention
Fig. 1 is the system block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Appended drawing reference: 1, exciting current module；11, excitation winding；12, single-phase rectifier unit；13, resistance unit；14, turn
Sub- winding；2, welding current module；21, DC winding；22, three phase rectifier unit；3, relay；31, coil；32, contact.
Specific embodiment
The utility model is described further referring to attached drawing.
As depicted in figs. 1 and 2, a kind of arc striking circuit for the welding machine that generates electricity, including exciting current module 1, welding current module 2
With relay 3.Exciting current module 1, including excitation winding 11, single-phase rectifier unit 12, resistance unit 13 and rotor windings 14.
Single-phase rectifier unit 12 is unidirectional bridge rectifier, and excitation winding 11 is electrically connected with single-phase rectifier unit 12.Resistance unit 13
Including potentiometer RP and resistance R, potentiometer RP includes resistor body and brush, and one end of resistor body is electrically connected with rotor windings 14,
The other end is electrically connected with single-phase rectifier unit 12, and the one end of rotor windings 14 far from potentiometer RP is electrically connected with single-phase rectifier unit 12
It connects, one end of brush and resistor body contradict, and the other end is electrically connected with resistor body far from one end of rotor windings 14.Resistance R and electricity
Position device RP is in parallel.
Welding current module 2 includes DC winding 21 and three phase rectifier unit 22, and DC winding 21 uses star connection DC winding
21 couple with rotor windings 14.Three phase rectifier unit 22 includes concatenated diode D1 and diode D2, concatenated diode D3
It is mutually electrically connected with the anode of diode D4, concatenated diode D5 and diode D6, diode D1, diode D3, diode D5
Connect, diode D2, diode D4, diode D6 cathode mutually put connection, three beginnings of DC winding 21 are located at two poles
The company for connecting midpoint, diode D5 and diode D6 for connecting midpoint, diode D3 and diode D4 of pipe D1 and diode D2
Connect midpoint.
Relay 3 is voltage relay, and relay 3 includes coil 31 and contact 32, one end of coil 31 simultaneously with two poles
The anode electrical connection of pipe D1, diode D3, diode D5, the other end simultaneously with diode D2, diode D4, diode D6 it is negative
Pole electrical connection.Between resistance R and potentiometer RP, the both ends of contact 32 are electrically connected with potentiometer RP and resistance R respectively for contact 32
It connects.
To sum up, excitation winding 11 exports alternating current, and after the rectification of single-phase rectifier unit 12, AC conversion is direct current
Electricity, rotor windings 14 are identical as the electric current in the circuit that potentiometer RP is constituted, and rotor windings 14 are coupled with DC winding 21, DC winding
The alternating current generated on 21 is converted to direct current by three phase rectifier unit 22, and direct current is exported from three phase rectifier unit 22.Work
People is when welding, if the voltage value at three phase rectifier unit 22 reduces, the contact 32 of relay 3 is closed at this time, relay 3
Contact 32 be closed after so that in parallel between resistance R and potentiometer RP, the circuit of rotor windings 14 and potentiometer RP composition at this time
In all-in resistance become smaller, pass through rotor windings 14 electric current increase so that three phase rectifier unit 22 export electric current
Increase, improves the characteristic of short circuit current, so that welding rod can rapid arcing.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
These improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. it is a kind of generate electricity welding machine arc striking circuit, it is characterized in that: include exciting current module (1), welding current module (2) and after
Electric appliance (3),
Exciting current module (1), including for exporting alternating current excitation winding (11), be electrically connected with the excitation winding (11)
For the alternating current to be converted into the single-phase rectifier unit (12) of direct current, is electrically connected with the single-phase rectifier unit (12)
The resistance unit (13) for changing circuital current size, the rotor windings (14) that are coupled with the welding current module (2)；
Welding current module (2), including the DC winding (21) and the DC winding (21) electricity coupled with the rotor windings (14)
The three phase rectifier unit (22) for being used to for the alternating current being converted into direct current of connection；
The resistance unit (13) includes that both ends are electrically connected with the rotor windings (14) and the single-phase rectifier unit (12) respectively
Potentiometer RP, the resistance R in parallel with the potentiometer RP connect；
The coil (31) of the relay (3) is electrically connected with the three phase rectifier unit (22), the contact of the relay (3)
(32) both ends are electrically connected with resistance R and potentiometer RP respectively.
2. the arc striking circuit of a kind of welding machine that generates electricity according to claim 1, it is characterized in that: the single-phase rectifier unit (12)
Using single phase bridge type rectifier circu.
3. the arc striking circuit of a kind of welding machine that generates electricity according to claim 1, it is characterized in that: the DC winding (21) uses star
Shape connection.
4. the arc striking circuit of a kind of welding machine that generates electricity according to claim 1, it is characterized in that: the relay (3) is voltage
Relay.
5. the arc striking circuit of a kind of welding machine that generates electricity according to claim 1, it is characterized in that: the three phase rectifier unit (22)
Including concatenated diode D1 and diode D2, concatenated diode D3 and diode D4, concatenated diode D5 and diode
D6, the diode D1, diode D3, diode D5 anode be electrically connected to each other, the diode D2, diode D4, two poles
The cathode of pipe D6 mutually puts connection, and three beginnings of the DC winding (21) are located at the connection of diode D1 and diode D2
Midpoint, the connection midpoint of diode D3 and diode D4, diode D5 and diode D6 connection midpoint.
6. the arc striking circuit of a kind of welding machine that generates electricity according to claim 5, it is characterized in that: the coil of the relay (3)
(31) one end be electrically connected with the anode of the diode D1, diode D3, diode D5 simultaneously, the other end while with described two
The cathode electrical connection of pole pipe D2, diode D4, diode D6.
7. the arc striking circuit of a kind of welding machine that generates electricity according to claim 1, it is characterized in that: the potentiometer RP includes resistance
Body and brush, the both ends of the resistor body are electrically connected with rotor windings (14) and single-phase rectifier unit (12) respectively, the brush
It is electrically connected with the resistor body far from one end of the rotor windings (14).
8. the arc striking circuit of a kind of welding machine that generates electricity according to claim 7, it is characterized in that: the rotor windings (14) are just
Pole is connect with the resistor body, and cathode is connect with the single-phase rectifier unit (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821030011.4U CN208895357U (en) | 2018-06-30 | 2018-06-30 | A kind of arc striking circuit for the welding machine that generates electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821030011.4U CN208895357U (en) | 2018-06-30 | 2018-06-30 | A kind of arc striking circuit for the welding machine that generates electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208895357U true CN208895357U (en) | 2019-05-24 |
Family
ID=66567039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821030011.4U Active CN208895357U (en) | 2018-06-30 | 2018-06-30 | A kind of arc striking circuit for the welding machine that generates electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208895357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244019A (en) * | 2021-12-16 | 2022-03-25 | 钱江集团温岭正峰动力有限公司 | Engine-driven power generation and electric welding dual-purpose machine |
-
2018
- 2018-06-30 CN CN201821030011.4U patent/CN208895357U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244019A (en) * | 2021-12-16 | 2022-03-25 | 钱江集团温岭正峰动力有限公司 | Engine-driven power generation and electric welding dual-purpose machine |
| CN114244019B (en) * | 2021-12-16 | 2023-05-16 | 钱江集团温岭正峰动力有限公司 | Dual-purpose machine for engine driving, power generation and electric welding |
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