CN212420047U - Wide-voltage PFC (power factor correction) control plasma cutting machine - Google Patents
Wide-voltage PFC (power factor correction) control plasma cutting machine Download PDFInfo
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- CN212420047U CN212420047U CN202020925038.0U CN202020925038U CN212420047U CN 212420047 U CN212420047 U CN 212420047U CN 202020925038 U CN202020925038 U CN 202020925038U CN 212420047 U CN212420047 U CN 212420047U
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Abstract
The utility model belongs to the technical field of plasma cutting machine, especially a wide voltage PFC control plasma cutting machine, aiming at the problem that the power factor of the single-phase power supply of the existing plasma cutting machine is low, only 65%, too large power can not be done in the single-phase power supply, the input power line is thick, the power line which can not be drawn too long is poor in cutting ability and easy to break arc, and the generator is damaged, and the cutting is unstable, the following proposal is provided, which comprises a power line and a power switch, wherein the power line is connected with a main switch, the main switch is connected with an EMC board, the EMC board is connected with a single-phase rectifier bridge, the single-phase rectifier bridge is connected with a main board, the main board is connected with a fan, a control panel, a temperature switch, an electromagnetic valve and a plasma cutting gun, the utility model can be powered by the generator, the power factor is high, the input, small volume and light weight.
Description
Technical Field
The utility model relates to a plasma cutting machine technical field especially relates to a wide voltage PFC control plasma cutting machine.
Background
Plasma cutting is a processing method in which a metal portion or a portion at a notch of a workpiece is melted by heat of a high-temperature plasma arc, and the melted metal is removed by momentum of high-speed plasma to form a notch, and a plasma cutting machine is a machine for processing a metal material by means of a plasma cutting technique.
The power factor of a single-phase power supply of the existing plasma cutting machine is low and is only 65%, too much power cannot be made in the single-phase power supply, an input power line is thick, a too long power line cannot be drawn, the cutting capability is poor, arc breakage is easy, a generator is damaged, and cutting is unstable, so that the wide-voltage PFC control plasma cutting machine is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the power factor of plasma cutting machine single phase power source and being low, only 65%, can not do too big power in single phase power source, the input power line will be thick, can not draw too long power cord, and cutting ability is poor, easy arc breaking, still the generator is bad, cuts unstable shortcoming, and the wide voltage PFC control plasma cutting machine who provides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a wide voltage PFC control plasma cutting machine, includes power cord and switch, the power cord is connected with main switch, is connected with the EMC board on the main switch, be connected with single-phase rectifier bridge on the EMC board, be connected with the mainboard on the single-phase rectifier bridge, the mainboard connection has fan, control panel, temperature switch, solenoid valve and plasma cutting rifle.
Preferably, the power switch is connected with an EMC circuit, the EMC circuit is connected with a buffer circuit, the EMC circuit is further connected with an auxiliary power supply rectifying part, the auxiliary power supply rectifying part is connected with an auxiliary power supply, the auxiliary power supply is connected with the fan, and the auxiliary power supply is connected with the PFC control circuit.
Preferably, the PFC control circuit is connected with a PFC main circuit, the PFC main circuit is connected with a silicon bridge and a filter capacitor, the filter capacitor is connected with an inverter, the inverter is connected with a main transformer and an IGBT driving part, the main transformer is connected with a current transformer, and the IGBT driving part and the current transformer are connected with the same PWM control part.
Preferably, the PWM control part is connected to a control board, and the control board is connected to an isolation transformer.
Preferably, the control panel is connected with a Hall sensor, and the Hall sensor is connected with a relay.
Compared with the prior art, the utility model has the advantages of:
(1) when the scheme is used, the power cord is connected with commercial power, the main switch is turned on, the plasma cutting machine is powered on, the panel display lamp is on, the fan starts to rotate, at the moment, the plasma cutting gun is not output, the plasma cutting machine is in a standby state, when the gun switch is pressed, the plasma cutting is started, the plasma cutting gun has output, at the moment, the V direct current electromagnetic valve starts to work, the plasma cutting gun has compressed air to spray out, the time delay is carried out, the plasma arc striking generator on the rear main board starts to work to puncture the electrode and the nozzle on the plasma cutting, at the moment, the plasma cutting gun is sprayed by electric arc, the plasma is cut and moved to work to cut, when a gun switch is loosened, the plasma cutting starts the main current to stop outputting, the arc of the plasma cutting gun is broken, a main board is not arranged, and the V direct current electromagnetic valve is closed after delay of seconds so as to cool the plasma cutting gun;
(2) the utility model discloses available generator power supply, power factor is high, and input current is little, and the output is stable, and cutting ability is strong, and is small, light in weight.
Drawings
Fig. 1 is a schematic structural diagram of a wide voltage PFC controlled plasma cutting machine according to the present invention;
fig. 2 is a circuit diagram of a wide voltage PFC controlled plasma cutting machine according to the present invention;
fig. 3 is the utility model provides a plasma cutting torch's of wide voltage PFC control plasma cutting machine structure chart.
In the figure: the power supply line 1, the main switch 2, the EMC board 3, the single-phase rectifier bridge 4, the fan 5, the main board 6, the control board 7, the temperature switch 8, the solenoid valve 9, the plasma cutting gun 10, the power switch 11, the EMC circuit 12, the buffer circuit 13, the silicon bridge 14, the main PFC circuit 15, the PFC control circuit 16, the filter capacitor 17, the inverter 18, the main transformer 19, the Hall sensor 20, the relay 21, the current transformer 22, the isolation transformer 23, the auxiliary power supply rectifier 24, the PWM control 25, the IGBT drive part 26 and the auxiliary power supply 27.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments.
Referring to fig. 1-3, a wide voltage PFC control plasma cutting machine comprises a power line 1 and a power switch 11, wherein the power line 1 is connected with a main switch 2, the main switch 2 is connected with an EMC board 3, the EMC board 3 is connected with a single-phase rectifier bridge 4, the single-phase rectifier bridge 4 is connected with a main board 6, the main board 6 is connected with a fan 5, a control board 7, a temperature switch 8, an electromagnetic valve 9 and a plasma cutting gun 10, the plasma cutting gun 10 is internally provided with an air compressor, a WPN-01 main board and a WPK-02 control board, the plasma cutting power line 1 is connected with a mains supply 220v, the main switch 2 cuts off a plasma cutting power supply to separate a power grid from the plasma cutting machine, the single-phase rectifier bridge 4 in a filter board rectifies alternating current into direct current, and then sends the direct current to an inverter board, the inverter board is controlled by, the plasma cutting gun 10 is supplied with a micro air compressor for pumping and then arc starting cutting is carried out.
The main switch 2 is used to turn the power on and off, the EMC board 3: controlling electromagnetic compatibility; single-phase rectifier bridge 4: a rectifying circuit; a fan 5: a heat dissipation main board; main board 6: the electrolytic capacitor bank, the PFC circuit, the slow starting current, the inverter, the driving circuit, the main transformer, the arc striking circuit and the output rectifying circuit are formed, a direct current power supply is converted into high-frequency alternating current, and then the high-frequency alternating current is rectified and output to be changed into controllable direct current power supply output; and a control board 7: the MCU and the peripheral circuit are used for controlling the logic and power of the whole machine, and the MCU comprises a key, a display lamp and a nixie tube, so that the whole machine can be completely operated; the temperature switch 8: an overheating protection function; electromagnetic valve 9: the electromagnetic valve is a reversing valve used in pneumatic operation, has an air release function, is arranged to adapt to the non-high-frequency arc striking principle, can quickly release air, and can quickly strike an arc by using a non-high-frequency gun; the plasma cutting gun 10 has the main functions of arc striking and cutting, and completes cutting operation.
In this embodiment, the power switch 11 is connected to the EMC circuit 12, the EMC circuit 12 is connected to the snubber circuit 13, the EMC circuit 12 is further connected to the auxiliary power supply rectifying portion 24, the auxiliary power supply rectifying portion 24 is connected to the auxiliary power supply 27, the auxiliary power supply 27 is connected to the fan 5, and the auxiliary power supply 27 is connected to the PFC control circuit 16.
In this embodiment, the PFC control circuit 16 is connected to the PFC main circuit 15, the PFC main circuit 15 is connected to the silicon bridge and the filter capacitor 17, the filter capacitor 17 is connected to the inverter 18, the inverter 18 is connected to the main transformer 19 and the IGBT driving part 26, the main transformer 19 is connected to the current transformer 22, and the IGBT driving part 26 and the current transformer 22 are connected to the same PWM control part 25.
In this embodiment, the PWM control section 25 is connected to the control board 7, and the isolation transformer 23 is connected to the control board 7.
In this embodiment, the control board 7 is connected to a hall sensor 20, and the hall sensor 20 is connected to a relay 21.
In the embodiment, the characteristics are as follows: current regulation, delayed gas shut-off, 2T/4T function, panel barometer display, built-in air filter, gas detection function, CNC interface (capable of being matched with automatic cutting signal output), single chip microcomputer control (MCU control), non-high-frequency arc striking, small and exquisite and light.
Acceptance criteria
■ GB15579.1-2004 (welding power supply)
■ GB/T8118-1995 (general technical conditions for electric arc welding machine)
■ ICE1000-3-2D class Specification
Report of experimental items
1) And functional test I: 1. the output current regulation function is effective under the rated power supply voltage, and the current regulation range is 230V 15%:
the current of CUT40 is 20-45A.
Within the voltage AC96-265V, the machine works.
2) And functional test II: under rated power supply voltage, no load is 255V, the arc striking function is normal, the arc striking is easy, and the high-frequency arc striking effect is good.
3) Load duration test (heat dissipation and temperature rise): the rated output at 230V, the load duration of 35 percent, the operation for 120 minutes, the temperature relay does not act in the whole process, and the IGBT tube can bear the operation without failure.
4) And aging on load: as above.
5) And adaptability to network pressure fluctuation.
The net pressure is 96V: under a rated state, the working state is not abnormal, and the driving voltage is normal; the network pressure is 265V: the working state is normal, under the rated output state, the generator is used as an input power supply, the full-range current cutting is realized, and the working state is normal.
The plasma cutting power supply is used for supplying energy to the plasma cutting gun. The parameters are as follows:
in the embodiment, when the plasma cutting machine is used, the power line 1 is connected with commercial power, the main switch 2 is turned on, the plasma cutting machine is powered on, the panel display lamp is on, the fan 5 starts to rotate, at the moment, the plasma cutting gun 10 does not output, the plasma cutting machine 10 is in a standby state, when the gun switch is pressed, the plasma cutting is started, the plasma cutting gun 10 outputs, at the moment, the 24V direct current electromagnetic valve 9 starts to work, the plasma cutting gun 10 is sprayed with compressed air, after the time delay of 0.5, the plasma arc striking generator on the main board 6 starts to work, an electrode and a nozzle on the plasma cutting are punctured, at the moment, the plasma cutting gun 10 is sprayed with electric arc, the plasma cutting can be cut when the gun switch is loosened, the plasma cutting starts the main current to stop outputting, the plasma cutting gun 10 is broken in electric arc, the main board 6 is not provided, at the moment, the 24V direct current electromagnetic valve 9 is turned off, the objective is to cool the plasma cutting gun 10.
The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to, replaced or changed.
Claims (5)
1. The utility model provides a wide voltage PFC control plasma cutting machine, includes power cord and switch, its characterized in that, the power cord is connected with main switch, is connected with the EMC board on the main switch, be connected with single-phase rectifier bridge on the EMC board, be connected with the mainboard on the single-phase rectifier bridge, the mainboard connection has fan, control panel, temperature switch, solenoid valve and plasma cutting rifle.
2. A wide voltage PFC controlled plasma cutting machine according to claim 1, wherein an EMC circuit is connected to the power switch, a snubber circuit is connected to the EMC circuit, and an auxiliary power supply rectifying part is connected to the EMC circuit, an auxiliary power supply is connected to the auxiliary power supply rectifying part, the auxiliary power supply is connected to the fan, and the PFC control circuit is connected to the auxiliary power supply.
3. The wide voltage PFC-controlled plasma cutting machine according to claim 2, wherein the PFC control circuit is connected with a PFC main circuit, the PFC main circuit is connected with a silicon bridge and a filter capacitor, the filter capacitor is connected with an inverter, the inverter is connected with a main transformer and an IGBT driving part, the main transformer is connected with a current transformer, and the IGBT driving part and the current transformer are connected with the same PWM control part.
4. The wide voltage PFC controlled plasma cutting machine according to claim 3, wherein the PWM control part is connected with a control board, and an isolation transformer is connected to the control board.
5. The wide voltage PFC controlled plasma cutting machine according to claim 1, wherein a Hall sensor is connected to the control board, and a relay is connected to the Hall sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020925038.0U CN212420047U (en) | 2020-05-28 | 2020-05-28 | Wide-voltage PFC (power factor correction) control plasma cutting machine |
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| CN202020925038.0U CN212420047U (en) | 2020-05-28 | 2020-05-28 | Wide-voltage PFC (power factor correction) control plasma cutting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111558768A (en) * | 2020-05-28 | 2020-08-21 | 深圳市景布科技发展有限公司 | Wide-voltage PFC (power factor correction) control plasma cutting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111558768A (en) * | 2020-05-28 | 2020-08-21 | 深圳市景布科技发展有限公司 | Wide-voltage PFC (power factor correction) control plasma cutting machine |
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