CN201324905Y - Direct current and variable polarity plasma generator - Google Patents
Direct current and variable polarity plasma generator Download PDFInfo
- Publication number
- CN201324905Y CN201324905Y CNU2008201734619U CN200820173461U CN201324905Y CN 201324905 Y CN201324905 Y CN 201324905Y CN U2008201734619 U CNU2008201734619 U CN U2008201734619U CN 200820173461 U CN200820173461 U CN 200820173461U CN 201324905 Y CN201324905 Y CN 201324905Y
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- current
- direct current
- relay
- welding
- plasma
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Abstract
In a direct current and variable polarity plasma generator, a welding cable which is connected on a tungsten electrode of a plasma gun from a welding power supply penetrates through a hall current sensor which is connected with a controller and a relay. The direct current and variable polarity plasma generator has the characteristics that in the direct current plasma welding, direct current main arc current passes through the welding cable, and the control circuit of the hall current sensor and the relay stop to work, and the plasma gun keeps the combined work of direct current maintaining arc current and direct current main arc current, when in variable polarity plasma welding, alternative positive and negative main arc current passes through the welding cable, and the control circuit of the hall current sensor and the relay are operated, the direct current maintaining arc current is closed, and only the alternative position and negative main arc current is kept in the plasma gun.
Description
Technical field
The utility model relates to the dual-purpose plasma generator in direct current, the Variable Polarity plasma welding equipment.
Background technology
Traditional plasma generator is mainly used in the direct current plasma welding, and this plasma generator is not suitable for the welding of Variable Polarity plasma, keep interfering with each other between the minor arc of arc and positive and negative alternation because of meeting causes direct current, the electric arc instability is difficult to realize stable welding.
Summary of the invention
The utility model is the improvement on direct current plasma generator basis, both has been applicable to the direct current plasma welding, is applicable to the welding of Variable Polarity plasma again.
In direct current, the dual-purpose plasma generator of Variable Polarity, the welding cable of being received the plasma gun tungsten electrode by the source of welding current passes Hall current sensor, and Hall current sensor connects controller and relay.When passing through direct current minor arc electric current in the welding cable, the controller and the relay of Hall current sensor are failure to actuate, and the direct current in the plasma gun is kept arc current and the associated working of direct current minor arc electric current; When the Variable Polarity plasma welding, during by positive and negative alternating current, the controller of Hall element and the actuating of relay are closed direct current and are kept arc current in the welding cable, the minor arc electric current that has only positive and negative alternation in the plasma gun has avoided direct current to keep the interference of arc current and positive and negative alternation minor arc electric current.
The advantage that utility model and background technology are compared and had:
(1) dual-use both had been applicable to the direct current plasma welding, was applicable to the welding of Variable Polarity plasma again;
(2) when the welding of aluminium alloy perforation plasma, adopt direct current minor arc electric current punching rate fast, effective, after the perforation, change the welding of Variable Polarity plasma again over to, must adopt direct current, the dual-purpose plasma generator of Variable Polarity.
Description of drawings
Fig. 1 is direct current, Variable Polarity plasma generator schematic diagram.
The specific embodiment
Direct current, Variable Polarity plasma generator are seen schematic diagram, wherein transformer (T) meets input voltage U1, power switch (K1), keep arc electricity U20, contact J1 by relay (J1) connects rectifier bridge (Q1), the negative pole of rectifier bridge connects the tungsten electrode (W) of plasma gun, the anodal nozzle (Z) that connects plasma gun by current-limiting resistance (R) hf arc starter (HF), the control voltage U 21 of transformer (T) connects rectifier bridge (Q2) and keeps arc switch (K2), relay (J1), controller (KZ) and relay (J2).Simultaneously, the welding cable of plasma welding power supply (P) output one end connects workpiece (G), it is characterized in that: the welding cable (DL) of another termination plasma gun tungsten electrode (W) pass Hall current sensor and controller (KZ) and relay (J2); When welding cable passes through direct current minor arc electric current (L), controller of Hall current sensor (KZ) and relay (J2) are failure to actuate, and keep direct current to keep arc current and the associated working of direct current minor arc electric current in the welding gun; When passing through the minor arc electric current of positive and negative alternation in the welding cable (DL), controller of Hall current sensor (KZ) and relay (J2) action, the normally-closed contact J2 of relay (J2) disconnects, and has closed direct current and has kept arc current, constituted direct current, the dual-purpose plasma generator of Variable Polarity.The minor arc current vanishes of positive and negative alternation in welding cable (DL), controller (KZ) and relay (J2) reset, and its normally-closed contact J2 closes, and ignites again and keeps arc, for next one circulation is got ready.
Claims (1)
1, direct current, Variable Polarity plasma generator, transformer (T) meets input voltage U1, power switch (K1), keep arc voltage U20, contact J1 by relay (J1) connects rectifier bridge (Q1), the negative pole of rectifier bridge connects the tungsten electrode (W) of plasma gun, the anodal nozzle (Z) that connects plasma gun by current-limiting resistance (R) hf arc starter (HF), the control voltage U 21 of transformer (T) connects rectifier bridge (Q2) and keeps arc switch (K2), relay (J1), controller (KZ) and relay (J2).Simultaneously, the welding cable of plasma welding power supply (P) output one end connects workpiece (G), it is characterized in that: the welding cable (DL) of another termination plasma gun tungsten electrode (W) pass Hall current sensor and controller (KZ) and relay (J2); When welding cable passes through direct current minor arc electric current (L), controller of Hall element (KZ) and relay (J2) are failure to actuate, and keep direct current to keep arc current and the associated working of direct current minor arc electric current in the welding gun; When passing through the minor arc electric current of positive and negative alternation in the welding cable (DL), controller of Hall element (KZ) and relay (J2) action, the normally-closed contact J2 of relay (J2) disconnects, and has closed direct current and has kept arc current, constituted direct current, the dual-purpose plasma generator of Variable Polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201734619U CN201324905Y (en) | 2008-10-27 | 2008-10-27 | Direct current and variable polarity plasma generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201734619U CN201324905Y (en) | 2008-10-27 | 2008-10-27 | Direct current and variable polarity plasma generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201324905Y true CN201324905Y (en) | 2009-10-14 |
Family
ID=41176883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201734619U Expired - Fee Related CN201324905Y (en) | 2008-10-27 | 2008-10-27 | Direct current and variable polarity plasma generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201324905Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142844A (en) * | 2013-04-02 | 2015-12-09 | 松下知识产权经营株式会社 | Torch for plasma cutting, plasma cutting power supply, and plasma cutting device |
-
2008
- 2008-10-27 CN CNU2008201734619U patent/CN201324905Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105142844A (en) * | 2013-04-02 | 2015-12-09 | 松下知识产权经营株式会社 | Torch for plasma cutting, plasma cutting power supply, and plasma cutting device |
| CN105142844B (en) * | 2013-04-02 | 2018-04-03 | 松下知识产权经营株式会社 | Plasma cut cutting torch, plasma cut power supply and plasma cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |