CN102695354A - Remote-controlled plasma torch firing gun - Google Patents

Remote-controlled plasma torch firing gun Download PDF

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Publication number
CN102695354A
CN102695354A CN201210088831XA CN201210088831A CN102695354A CN 102695354 A CN102695354 A CN 102695354A CN 201210088831X A CN201210088831X A CN 201210088831XA CN 201210088831 A CN201210088831 A CN 201210088831A CN 102695354 A CN102695354 A CN 102695354A
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electrode
high voltage
cmos
coil
electronic switch
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CN102695354B (en
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舒小明
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Beijing Aerospace Environmental Engineering Co ltd
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Maanshan Tongli Hydraulic Equipment Manufacturing Co ltd
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Abstract

The invention provides a remote-controlled plasma torch firing gun belonging to the technical field ofa plasma generator. The firing gun comprises a columnar inner electrode (1), a cylindrical outer electrode (2), an insulating sleeve (3), a high voltage power supply (5) and a control system (6). The columnar inner electrode (1) is fixed on the central through-hole of the insulating sleeve (3) so that the columnar inner electrode (1) is arranged on the central axis of the cylindrical outer electrode (2) and is insulated from the outer electrode. The high voltage power supply (5) imposes a high voltage power supply on a cavity between the internal electrode (1) and the outer electrode (2) to ionize the air in the cavity. The high voltage power supply (5) comprises n-level direct current voltage units. The control system (6) can remotely control the on-off of each direct current voltage unit. n refers to an integer greater than or equal to 4. The firing gun provided by the invention can be remotely controlled, and can adopt components with low voltage resistance in a booster circuit.

Description

The plasma igniting rifle of Long-distance Control
Technical field
The present invention relates to a kind of plasma igniting rifle of Long-distance Control, belong to the plasma generator technical field.
Background technology
The current plasma that under atmospheric pressure, can produce has two kinds; A kind of is hot plasma; It is characterized in that gas temperature is often very high, approximately the 10000K magnitude is mainly used in plasma spray coating, cutting, welding, waste disposal, material surface processing and other fields.Another kind is a cold plasma, it is characterized in that gas temperature very low (near room temperature), but electron temperature is very high, therefore has very high chemism, belongs to nonequilibrium plasma.But, under the normal temperature and pressure that air ionization is bigger to produce the plasma required voltage, need several kilovolts high pressure usually.And adopt booster circuit of the prior art, and produce so high voltage, then need the resistance to pressure of device very high.
Summary of the invention
The object of the present invention is to provide a kind of plasma igniting rifle based on Long-distance Control, it can carry out Long-distance Control, and can adopt withstand voltage lower components and parts in the booster circuit.
For realizing said goal of the invention; The invention provides a kind of plasma igniting rifle of Long-distance Control; Said burning torch comprises: the interior electrode 1 of column, the external electrode 2 of tubular, insulating sleeve 3, high voltage source 5 and control system 6; Wherein, The interior electrode 1 of said column be fixed on the central through hole of insulating sleeve 3 with the interior electrode 1 with column be arranged on external electrode 2 central axis of tubular and with the external electrode insulation, on electrode 1 and the external electrode 2, provide a high voltage source with the air in the cavity between electrode in the ionization 1 and the external electrode 2 in two outputs of described high voltage source 5 are connected to respectively to give between interior electrode 1 and the external electrode 2; Said high voltage source 5 comprises the direct voltage unit of n level cascade; Each direct voltage unit is through the cascade of afterflow coil, and the break-make that control system 6 can each direct voltage unit of Long-distance Control applies required direct current energy to give interior electrode and external electrode, and said n is greater than or equal to 4 integer.
Preferably; Described high voltage source 5 comprises transformer; Said transformer comprises a primary coil and n secondary coil; Each direct voltage unit comprises a rectifier, a fly-wheel diode, an electronic switch and a driving stage, and the positive pole of said rectifier is connected in first end of a coil of transformer secondary output, and the negative pole of rectifier is connected to the negative pole of fly-wheel diode; The positive pole of fly-wheel diode is connected to first end of electronic switch; Second end of electronic switch is connected to second end of a coil of transformer secondary output to form a loop; The control end of electronic switch is connected to driving stage; By the break-make of driving stage control electronic switch, said n is greater than or equal to 4 integer.
Preferably, described electronic switch is transistor, FET or controllable silicon.。
Preferably, described control system 6 comprises a controller and n optical transmitting set, and described optical transmitting set converts the control signal of controller output to light signal so that in optical fiber, transmit.
Preferably, described high voltage source 5 also comprises n optical receiver, and described optical receiver receives the light signal of corresponding optical transmitting set emission, and converts light signal the signal of telecommunication of controlling and driving level to.
Compared with prior art, the plasma igniting rifle of Long-distance Control provided by the invention, controller can have system's versatility through software programming with Long-distance Control high voltage source output free voltage value.Can adopt the lower components and parts of withstand voltage in the high-tension circuit simultaneously.
Description of drawings
Fig. 1 is the sketch map of the plasma igniting rifle of Long-distance Control provided by the invention;
Fig. 2 is the oscillogram of the instantaneous voltage under a kind of situation of high voltage source provided by the invention;
Fig. 3 is the oscillogram of the instantaneous voltage under the another kind of situation of high voltage source provided by the invention.
Embodiment
Specify the present invention below in conjunction with accompanying drawing, identical Reference numeral is represented identical parts.
Fig. 1 is the sketch map of the plasma igniting rifle of Long-distance Control provided by the invention.As shown in Figure 1; The plasma igniting rifle of said Long-distance Control comprises: the interior electrode 1 of column, the external electrode 2 of tubular, insulating sleeve 3, high voltage source 5 and control system 6; Wherein, The interior electrode 1 of the fixing said column of the central through hole of insulating sleeve 3 is arranged at the interior electrode 1 with column on external electrode 2 central axis of tubular and with external electrode and insulate; On electrode 1 and the external electrode 2, provide a high voltage source with the air in the formed chamber between electrode in the ionization 1 and the external electrode 2 to give between interior electrode 1 and the external electrode 2 in two outputs of described high voltage source 5 are connected to respectively, the lower end of said external electrode is provided with nozzle; So that high-temperature plasma is sprayed to light so thing, like coal, oil, gaseous mixture etc.Said high voltage source 5 comprises n level direct voltage unit M 0, M 1, M 2And M N, each direct voltage unit is through N afterflow coil L 01, L 12, L 23... the break-make that cascade, control system 6 can each direct voltage unit of Long-distance Control applies required direct current energy to give interior electrode and external electrode, and said n is greater than or equal to 4 integer, and n=N+1.The upper end of said external electrode 2 is provided with ventilation duct 4, air, steam etc. is injected between the inside and outside electrode in the formed chamber.
Described control system 6 comprises a controller and n optical transmitting set OT 0, OT 1, OT 2And OT N, N=n-1.Described high voltage source 5 also comprises transformer and n optical receiver OR 0, OR 1, OR 2And OR N, said transformer comprises a primary coil and n secondary coil, is transformed into needed alternating voltage with the power frequency ac voltage with 220V.Described optical transmitting set converts the control signal of controller output to light signal to arrive corresponding optical receiver through Optical Fiber Transmission.Described optical receiver receives the light signal that corresponding optical transmitting set emission comes, and the signal of telecommunication that the light signal that receives is converted to the controlling and driving level realizes being in the high voltage isolation of direct voltages at different levels unit and low level control section on the suspension voltage with this.
First direct voltage unit M 0First coil L that comprises transformer secondary output 0, a rectifier R 0, a sustained diode 0, an electronic switch and a driving stage P 0, electronic switch is CMOS pipe CMOS 0, said rectifier R 0Positive pole be connected in first coil L of transformer secondary output 0First end, rectifier R 0Negative pole be connected to sustained diode 0Negative pole; Sustained diode 0Positive pole be connected to CMOS pipe CMOS 0Drain electrode, CMOS manages CMOS 0Source electrode be connected to first coil L of transformer secondary output 0Second end, CMOS manages CMOS 0Grid be connected to driving stage P 0, by driving stage P 0According to optical receiver OR 0The control command control CMOS pipe CMOS that the controller 7 that is received is sent 0Break-make.CMOS manages CMOS 0Work on off state, as CMOS pipe CMOS 0High potential of grid input the time, CMOS manages CMOS 0Conducting, first coil L 0Second end be equivalent to receive sustained diode 0Positive pole.Rectifier R 0With first coil L 0The alternating voltage u of output 0Rectification conversion dc voltage U 0Sustained diode 0The voltage at two ends is U 0, the upper end is for just, and the lower end is for negative.As CMOS pipe CMOS 0Electronegative potential of grid input the time, CMOS manages CMOS 0End.Sustained diode 0The voltage at two ends is diode junction voltage.
In like manner, second direct voltage unit M 1Second the coil L that comprises transformer secondary output 1, a rectifier R 1, a sustained diode 1, an electronic switch and a driving stage P 1, electronic switch is CMOS pipe CMOS 1, said rectifier R 1Positive pole be connected in second coil L of transformer secondary output 1First end, rectifier R 1Negative pole be connected to sustained diode 1Negative pole; Sustained diode 1Positive pole be connected to CMOS pipe CMOS 1Drain electrode, CMOS manages CMOS 1Source electrode be connected to second coil L of transformer secondary output 1Second end, CMOS manages CMOS 1Grid be connected to driving stage P 1, by driving stage P 1According to optical receiver OR 1The control command control CMOS pipe CMOS that the controller 7 that is received is sent 1Break-make.CMOS manages CMOS 1Work on off state, as CMOS pipe CMOS 1High potential of grid input the time, CMOS manages CMOS 1Conducting, second coil L 1Second end be equivalent to receive sustained diode 1Positive pole.Rectifier R 1With first coil L 1The alternating voltage u of output 1Rectification conversion dc voltage U 1Volt.Sustained diode 1The voltage at two ends is U 1, the upper end is for just, and the lower end is for negative.As CMOS pipe CMOS 1Electronegative potential of grid input the time, CMOS manages CMOS 1End.Sustained diode 1The voltage at two ends is diode junction voltage.
The 3rd direct voltage unit M 2Second the coil L that comprises transformer secondary output 2, a rectifier R 2, a sustained diode 2, an electronic switch and a driving stage P 2, electronic switch is CMOS pipe CMOS 2, said rectifier R 2Positive pole be connected in the 3rd coil L of transformer secondary output 2First end, rectifier R 2Negative pole be connected to the negative pole of fly-wheel diode; Sustained diode 2Positive pole be connected to CMOS pipe CMOS 2Drain electrode, CMOS manages CMOS 2Source electrode be connected to the 3rd coil L of transformer secondary output 2Second end, CMOS manages CMOS 2Grid be connected to driving stage P 2, by driving stage P 2According to optical receiver OR 2The control command control CMOS pipe CMOS that the controller 7 that is received is sent 2Break-make.CMOS manages CMOS 2Work on off state, as CMOS pipe CMOS 2High potential of grid input the time, CMOS manages CMOS 2Conducting, the 3rd coil L 2Second end be equivalent to receive sustained diode 2Positive pole.Rectifier R 2With the 3rd coil L 2The alternating voltage u of output 2Rectification conversion dc voltage U 2Sustained diode 2The voltage at two ends is U 2, the upper end is for just, and the lower end is for negative.As CMOS pipe CMOS 2Electronegative potential of grid input the time, CMOS manages CMOS 2End.Sustained diode 2The voltage at two ends is diode junction voltage.
And the like, n direct voltage unit M NN the coil L that comprises transformer secondary output N, a rectifier R N, a sustained diode N, an electronic switch and a driving stage P N, electronic switch is CMOS pipe CMOS N, said rectifier R NPositive pole be connected in n coil L of transformer secondary output NFirst end, rectifier R NNegative pole be connected to the negative pole of fly-wheel diode; Sustained diode NPositive pole be connected to CMOS pipe CMOS NDrain electrode, CMOS manages CMOS NSource electrode be connected to n coil L of transformer secondary output NSecond end, CMOS manages CMOS NGrid be connected to driving stage P N, by driving stage P NAccording to optical receiver OR NThe control command control CMOS pipe CMOS that the controller 7 that is received is sent NBreak-make.Metal-oxide-semiconductor CMOS NWork on off state, as CMOS pipe CMOS NHigh potential of grid input the time, CMOS manages CMOS NConducting, n coil L NSecond end be equivalent to receive sustained diode NPositive pole.Rectifier R NWith first coil L 0The alternating voltage u of output NRectification conversion dc voltage U NVolt.Sustained diode NThe voltage at two ends is U N, the upper end is for just, and the lower end is for negative.As CMOS pipe CMOS NElectronegative potential of grid input the time, CMOS manages CMOS NEnd.Sustained diode NThe voltage at two ends is diode junction voltage.
The 1st direct voltage unit M 0With the 2nd direct voltage unit M 1Between with afterflow coil L 01Link to each other, i.e. afterflow coil L 01Be connected in sustained diode 0Negative pole and sustained diode 1Positive pole between; The 2nd direct voltage unit M 1With the 3rd direct voltage unit M 2Between with afterflow coil L 12Link to each other, i.e. afterflow coil L 12Be connected in sustained diode 1Negative pole and sustained diode 2Positive pole between; And the like, the 3rd direct voltage unit M 2With the 4th direct voltage unit M 3Between with afterflow coil L 23Be connected.So, if each direct voltage unit M 0, M 1, M 2... And M NElectronic switch all under the situation of conducting simultaneously, high voltage source 5 total output total voltages are U Always=U 0+ U 1+ U 2+ ... + U N High voltage source 5 also comprises filter inductance L and filter capacitor C, with filtering U AlwaysIn the switching frequency composition.
Isoionic point firelock provided by the invention; Under clock pulse control; The output voltage sample value that control system 6 obtains through sample circuits (electric resistance partial pressure) and the voltage of reference signal compare, and sampled voltage is during less than setting voltage, and controller 7 sends instruction; Open a direct current unit, the high voltage source output voltage is raise; In the next clock cycle, if sampled voltage still less than reference signal voltage, controller 7 sends instruction, opens a direct current unit again, continues to make the high voltage source output voltage to raise; Greater than setting voltage, controller 7 sends instruction up to sampled voltage, closes a direct current unit, and the high voltage source output voltage is reduced, and equals setting voltage up to sampled voltage.
Isoionic point firelock provided by the invention can also be under clock pulse control, and control system 6 makes wherein part of direct current pressure unit (if total direct voltage unit is 12, promptly under the situation of n=12), as makes M 0, M 1And M 5At first time period of a clock cycle T [t 1, t 2] work, make wherein another part direct voltage unit M 5, M 6And M 11Second time period [t at a clock cycle T 2, t 3] work, wherein, t 3-t 2=t 2-t 1, t 3-t 1=T, then under all identical situation of the output voltage of each grade, the output voltage of high voltage source is about
Figure BSA00000693333900061
As shown in Figure 2, isoionic point firelock provided by the invention can also be under clock pulse control, and control system 6 makes wherein part of direct current pressure unit, like M 0, M 1And M 5First clock section [t at one-period T 1, t 2] preceding half section time service, at first time clock section [t 1, t 2] time second half section ends; Make wherein another part direct voltage unit M 5, M 6And M 11Second time period [t at one-period T 2, t 3] preceding half section time clock work, at second time period [t 2, t 3] the second half section time clock ends, wherein, t 3-t 2=t 2-t 1, t 3-t 1=T, then under all identical situation of the output voltage of each grade, the output voltage of high voltage source is about
Figure BSA00000693333900062
If control system 6 makes wherein part of direct current pressure unit (if total direct voltage unit is 12, promptly under the situation of n=12), like M 0, M 1And M 3At first time period of one-period T [t 1, t 2] work, make wherein second portion direct voltage unit M 4, M 5And M 7Second time period [t at one-period 2, t 3] work, make wherein third part direct voltage unit M 8, M 9And M 11The 3rd time period [t at one-period T 3, t 4] work, wherein, t 4-t 3=t 3-t 2=t 2-t 1, t 4-t 1=T, then under all identical situation of the output voltage of each grade, the output voltage of high voltage source is about
Figure BSA00000693333900071
As shown in Figure 3, isoionic point firelock provided by the invention can also be under clock pulse control, and control system 6 makes wherein part of direct current pressure unit, like M 0, M 1And M 3At first time period of one-period T [t 1, t 2] the interior work of preceding half time period, at first time period [t 1, t 2] end in the later half time period; Make wherein second portion direct voltage unit M 4, M 5And M 7Second time period [t at one-period 2, t 3] preceding half time period in work, at second time period [t 2, t 3] the later half time period in end; Make wherein third part direct voltage unit M 8, M 9And M 11The 3rd time period [t at one-period T 3, t 4] the interior work of preceding half time period, at the 3rd time period [t 3, t 4] end in the later half time period, wherein, t 4-t 3=t 3-t 2=t 2-t 1, t 4-t 1=T, then under all identical situation of the output voltage of each grade, the output voltage of high voltage source is about
Figure BSA00000693333900072
So, we can be provided with needed high voltage source through controller as required.Adopt formation that the direct voltage unit is in series to form needed high pressure simultaneously, then the components and parts of every grade of direct voltage unit do not need withstand voltage very high, can accomplish boosting inverter.
Isoionic point firelock provided by the invention is followed following rule to the switch control of direct voltage unit: when needing to open a direct current unit, always open time that direct voltage unit at most that is in closed condition; In the time of need closing a direct voltage unit, always close time that direct voltage unit at most that is in opening.Such switch control law brings two benefits: (1) each switch module operating time zone is impartial, and equivalent load is balanced; (2) to certain clock pulse frequency, the switching frequency of the electronic switch of each direct voltage unit reduces significantly.With the dc reference signal is example, if clock pulse frequency is f, high voltage source is made up of n direct voltage unit, and then the actual switch frequency of each direct voltage unit electronic switch is f/n.
Alternatively, CMOS pipe can transistor, controllable silicon replaces.
In high voltage source, introduce fly-wheel diode among the present invention, make the electronic switch of each direct voltage unit independently to control, need not conducting simultaneously or end.During the electronic switch conducting of certain direct current unit, its output voltage is that series connection inserts; When electronic switch ended, other direct current unit was through the outside circuit output voltage of fly-wheel diode (electric current), i.e. the effect of fly-wheel diode is the cut-off state at electronic switch, and current path is provided.The effect of afterflow coil is the transient state impulse disturbances that suppresses the electronic switch conducting or end moment; On the other hand, the equivalent coefficient of self-inductance of all afterflow coils also participates in constituting back level filter circuit.
Because HVDC provided by the invention can be through its output free voltage value of controller software programming, so the flame temperature of plasma igniting rifle can be set as required.Form through multi-stage cascade and produce high-tension DC power supply, so can adopt the lower components and parts of withstand voltage to accomplish low-voltage to high-tension conversion.
Though below having combined accompanying drawing has done to elaborate to design and instance according to the object of the invention; But those skilled in the art will be appreciated that; Under the prerequisite that does not break away from the present invention's design, any improvement and conversion of making based on the present invention still belongs to the content in the protection range of the present invention.

Claims (5)

1. the plasma igniting rifle of a Long-distance Control; Said burning torch comprises: the interior electrode (1) of column, the external electrode (2) of tubular, insulating sleeve (3), high voltage source (5) and control system (6); Wherein, The interior electrode (1) of said column is fixed on the central through hole of insulating sleeve (3) to be arranged on external electrode (2) central axis of tubular and with external electrode with the interior electrode (1) with column and insulate; Two outputs of described high voltage source (5) are connected to respectively on interior electrode (1) and the external electrode (2), provide a high voltage source with the air in the cavity between electrode in the ionization (1) and the external electrode (2) between interior electrode (1) and the external electrode (2) to give, and it is characterized in that; Said high voltage source (5) comprises n level cascade direct voltage unit; Each direct voltage unit is through the cascade of afterflow coil, and the break-make that control system (6) can each direct voltage unit of Long-distance Control applies needed direct current energy to give interior electrode and external electrode, and said n is greater than or equal to 4 integer.
2. plasma igniting rifle according to claim 1; It is characterized in that; Described high voltage source (5) comprises transformer, and said transformer comprises a primary coil and n secondary coil, and each direct voltage unit comprises a rectifier, a fly-wheel diode, an electronic switch and a driving stage; The positive pole of said rectifier is connected in first end of a coil of transformer secondary output, and the negative pole of rectifier is connected to the negative pole of fly-wheel diode; The positive pole of fly-wheel diode is connected to first end of electronic switch; Second end of electronic switch is connected to second end of a coil of transformer secondary output to form a loop; The control end of electronic switch is connected to driving stage, by the break-make of driving stage control electronic switch.
3. plasma igniting rifle according to claim 2 is characterized in that, described electronic switch is transistor, FET or controllable silicon.
4. plasma igniting rifle according to claim 3 is characterized in that, described control system (6) comprises a controller and n optical transmitting set, and described optical transmitting set converts the control signal of controller output to light signal so that in optical fiber, transmit.
5. plasma igniting rifle according to claim 4; It is characterized in that; Described high voltage source (5) also comprises n optical receiver, and described optical receiver receives the light signal of corresponding optical transmitting set emission, and converts light signal the signal of telecommunication of controlling and driving level to.
CN201210088831.XA 2012-03-30 2012-03-30 Remote-controlled plasma torch firing gun Expired - Fee Related CN102695354B (en)

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CN107525400A (en) * 2017-09-21 2017-12-29 航天环境工程有限公司 The dc source of plasma smelting furnace
CN110324952A (en) * 2019-06-26 2019-10-11 厦门大学 A kind of program-controlled multichannel plasma generating device

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Publication number Priority date Publication date Assignee Title
CN107525400A (en) * 2017-09-21 2017-12-29 航天环境工程有限公司 The dc source of plasma smelting furnace
CN110324952A (en) * 2019-06-26 2019-10-11 厦门大学 A kind of program-controlled multichannel plasma generating device

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Inventor before: Shu Xiaoming

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150128