CN201922159U - Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine - Google Patents
Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine Download PDFInfo
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- CN201922159U CN201922159U CN2010206478550U CN201020647855U CN201922159U CN 201922159 U CN201922159 U CN 201922159U CN 2010206478550 U CN2010206478550 U CN 2010206478550U CN 201020647855 U CN201020647855 U CN 201020647855U CN 201922159 U CN201922159 U CN 201922159U
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Abstract
The utility model discloses an improved high-voltage arc ignition circuit for a plasma cutting machine and an argon arc welding machine. A primary stage of a boosting transformer is connected with an AC (alternating current) power supply, a secondary stage of the boosting transformer is connected with a bridge rectifier circuit, and the bridge rectifier circuit is respectively connected with the primary stage of a high-voltage coupling transformer and a control circuit formed by low-frequency pulses dominated by a first thyristor. The improved high-voltage arc ignition circuit has a reasonable structure and is a low-powered, low-frequency and high-voltage pulse arc ignition circuit; as the circuit has low working frequency and is not provided with a high-frequency spark discharger, thereby greatly reducing the possibility of the interference on a CNC (computer numerical control) system, having strong instantaneous breakdown capacity of high-voltage pulses is strong and being capable of realizing quick arc ignition.
Description
Technical field
The utility model relates to a kind of high-voltage arc strike circuit that is used for CUT and argon arc welding machine.
Background technology
At present, the striking of general CUT and argon arc welding machine must rely on HF (3000V-10000V, the high-frequency impulse of 100-200KHZ) the cutting plasma arc that ignites, its fatal problem is exactly easily electronic equipment to be produced stronger electromagnetic interference, therefore, its use is restricted, particularly with the supporting use of CNC, be very easy to disturb the operate as normal of control computer, and Numerical control cutting is the fast and very large production technology of application quantity of development at present. utilize non-high frequency (WITHOUT HF PILOT) technology, the problems referred to above of dealing with problems effectively, the electromagnetic interference of CNC will be reduced greatly, but be that non-high frequency contact starting process is by separating and form electric arc by being shorted between the promotion electrode of air-flow and nozzle, so its striking reaction time is slower, generally having the hysteresis about 0.5S; For require the striking reaction speed faster occasion can not adapt to.
Summary of the invention
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and can realize the modified high-voltage arc strike circuit that is used for CUT and argon arc welding machine of quick striking.
Technical solution of the present utility model is:
A kind of modified high-voltage arc strike circuit that is used for CUT and argon arc welding machine, it is characterized in that: the elementary step-up transformer that is connected with AC power, secondary and the bridge rectifier of step-up transformer is connected, and bridge rectifier is connected with control circuit with the elementary low-frequency pulse formation that reaches based on first controllable silicon of high pressure coupling transformer respectively.
Described high pressure coupling transformer uses closed ferrite bead, and elementary and secondary coiling ratio is 1:22.
The utility model is rational in infrastructure, be a kind of low power low frequency (being lower than 100Hz) high pressure (10000-12000V) pulse arc ignition circuit, because operating frequency low (only be high-frequency arc strike mode 1/1000), and there is not the high-frequency spark discharger, greatly reduce possibility for the interference of CNC computerized control system, and the moment breakdown capability of high-voltage pulse is strong, so can realize quick striking.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment:
A kind of modified high-voltage arc strike circuit that is used for CUT and argon arc welding machine, the elementary step-up transformer 1(T1 that is connected with AC power), secondary and the bridge rectifier 2 of step-up transformer T1 is connected, bridge rectifier respectively with high pressure coupling transformer 3(T2) elementary and with the first controllable silicon 4(V1, model BT151) be that main low-frequency pulse forms and is connected with control circuit.
Described high pressure coupling transformer T2 uses closed ferrite bead, and primary and secondary uses lead or other conductors respectively, with the even coiling of ratio of elementary 1 circle and secondary 22 circles.
Operation principle of the present utility model and process are as follows:
When the control circuit of machine applies an AC48V at input (step-up transformer), behind the alternating current of 50Hz, rise to transformer secondary output output about AC630V by T1, be connected with control circuit with low-frequency pulse formation with the elementary of T2 (high pressure coupling transformer) respectively based on V1 (controllable silicon BT151) through bridge rectifier; When resistance R 3, controllable silicon V4, V3, after voltage on the V2 loop rises to certain value, V3, the V2 conducting, trigger controllable silicon V1, the V1 conducting provides load circuit for the V6-V9 bridge rectifier, thereby elementary (1T) conducting of T2, the high pressure output of 22 times of boost in voltage (about about 12000V) is connected to the reactor and the output " " end (being rifle gang socket) of CUT and argon arc welding machine, burning torch and argon-arc welding gun breakdown electrode and nozzle (plasma) or tungsten electrode and the workpiece gap electric arc that ignites can be provided, V1 closes when input 50HZ (being 100HZ after the rectification) waveform zero passage, repeat a process again up to next cycle, forming a low-frequency high-voltage impulse train, reach the effect of the electric arc that ignites. the characteristics of this circuit are exactly that reliability is higher.
Claims (2)
1. modified high-voltage arc strike circuit that is used for CUT and argon arc welding machine, it is characterized in that: the elementary step-up transformer that is connected with AC power, secondary and the bridge rectifier of step-up transformer is connected, and bridge rectifier is connected with control circuit with the elementary low-frequency pulse formation that reaches based on first controllable silicon of high pressure coupling transformer respectively.
2. the modified high-voltage arc strike circuit that is used for CUT and argon arc welding machine according to claim 1, it is characterized in that: described high pressure coupling transformer uses closed ferrite bead, and elementary and secondary coiling ratio is 1:22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206478550U CN201922159U (en) | 2010-12-08 | 2010-12-08 | Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206478550U CN201922159U (en) | 2010-12-08 | 2010-12-08 | Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201922159U true CN201922159U (en) | 2011-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206478550U Expired - Fee Related CN201922159U (en) | 2010-12-08 | 2010-12-08 | Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201922159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084709A (en) * | 2012-12-21 | 2013-05-08 | 南通富力机电设备有限责任公司 | Inverted multifunctional welding and cutting machine output circuit |
| CN104942403A (en) * | 2015-07-23 | 2015-09-30 | 深圳华意隆电气股份有限公司 | Commercial power synchronous 50HZ high-voltage pulse arc starter |
-
2010
- 2010-12-08 CN CN2010206478550U patent/CN201922159U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084709A (en) * | 2012-12-21 | 2013-05-08 | 南通富力机电设备有限责任公司 | Inverted multifunctional welding and cutting machine output circuit |
| CN104942403A (en) * | 2015-07-23 | 2015-09-30 | 深圳华意隆电气股份有限公司 | Commercial power synchronous 50HZ high-voltage pulse arc starter |
| CN104942403B (en) * | 2015-07-23 | 2016-09-28 | 深圳华意隆电气股份有限公司 | Civil power synchronizes 50Hz high-voltage pulse thread-leading arc device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nantong Free Electro-Mechanical Co., Ltd. Assignor: Wu Jianzhong Contract record no.: 2014320010072 Denomination of utility model: Improved high-voltage arc ignition circuit for plasma cutting machine and argon arc welding machine Granted publication date: 20110810 License type: Exclusive License Record date: 20140512 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141208 |
|
| EXPY | Termination of patent right or utility model |