CN201339139Y - Low-temperature plasma power supply for modifying textile surface - Google Patents
Low-temperature plasma power supply for modifying textile surface Download PDFInfo
- Publication number
- CN201339139Y CN201339139Y CNU2009201122640U CN200920112264U CN201339139Y CN 201339139 Y CN201339139 Y CN 201339139Y CN U2009201122640 U CNU2009201122640 U CN U2009201122640U CN 200920112264 U CN200920112264 U CN 200920112264U CN 201339139 Y CN201339139 Y CN 201339139Y
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- circuit
- surface modification
- control module
- electric field
- temperature plasma
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Abstract
The utility model discloses a low-temperature plasma power supply for modifying textile surface, which is mainly composed of a rectification circuit, a direct-current bus, a full-bridge inverter circuit, a transformer booster, a textile surface modification device, an electric field measurement module, an electric field amplitude stability control module and a textile surface modification linear power-adjusting control module; the power supply can generate stable, uniform and soft low-temperature plasma for processing the textile under high atmospheric pressure, thereby avoiding perforation and damage of the textile caused by low-temperature plasma discharge of uneven filaments and can remarkably improving the surface wettability under the condition that the basic performances of the textile can not be damaged.
Description
Technical field
The utility model relates to low-temperature plasma electrical source, relates in particular to a kind of low-temperature plasma electrical source for loomage surface modification.
Technical background
Low temperature plasma is a kind of cleaning, energy-conservation, quick, widely applicable new technology to loomage surface modification.It has the fabric of raising spinnability by fabric face being carried out etching, crosslinked and chemical modification, changes the free performance of fabric face, wettability, improves compoiste adhering intensity, improves advantages such as dyeability and effect.That key technology wherein is that the atmospheric low-temperature plasma power supply can produce is stable, even soft discharge type.Compare with other discharge type, stable, even soft discharge can not produce hot-spot makes fabric perforation or burning, and handled fabric types is not had strict requirement, adaptability is strong, the good uniformity of handling, in the time of the fabric face performance improvement, substrate performance is unaffected.
Stable, all even soft discharge type can be realized under low pressure very easily, but needs vaccum-pumping equipment this moment, system complex costliness, and be unsuitable for the industrial flow-line operation.Another kind of realization is stable, evenly soft discharge is to carry out under normal pressure, research in the past mainly concentrates on fills rare gas or mist, above the perhaps special electrode structure, do not consider of the effect of the control method of power supply to gas discharge form and loomage surface modification effect.In fact, even realized even discharge under certain condition, if control method can not be tackled complicated situation in the fabric treatment procedure, discharge type is subjected to ectocine to be easy to carry out the transition to uneven filament discharge type, cause the perforation and the burning of processed fabric, thereby limited its commercial Application.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and a kind of low-temperature plasma electrical source for loomage surface modification is provided.Utilize the utility model under atmospheric pressure produce stable, all even soft low temperature plasma is handled fabric, avoid uneven filament low temperature plasma to cause the perforation and the damage of fabric simultaneously, can its surface wettability be significantly improved.
The purpose of this utility model is achieved through the following technical solutions: a kind of low-temperature plasma electrical source for loomage surface modification, and it mainly stablizes control module by rectification circuit, dc bus, full bridge inverter, step-up transformer, loomage surface modification device, electric field measurement module, electric field magnitude and the linear Power Regulation control module of loomage surface modification is formed; Wherein, rectification circuit, dc bus, full bridge inverter, step-up transformer, loomage surface modification device, electric field measurement module are stablized control module with electric field magnitude and are connected successively, electric field magnitude is stablized control module and is linked to each other with rectification circuit, and the linear Power Regulation control module of loomage surface modification links to each other with full bridge inverter.
Further, described electric field magnitude stablize control module mainly by amplitude detection circuit, proportional and integral controller and integrated switch driver connect to form successively the linear Power Regulation control module of described loomage surface modification mainly by power given circuit, running time rate regulation device and switch driver connect to form described running time rate regulation device successively and mainly form by voltage controlled oscillator, frequency-halving circuit, pulsewidth generative circuit, AND circuit and not circuit.Link to each other with AND circuit after described voltage controlled oscillator links to each other with frequency-halving circuit, the pulsewidth generative circuit links to each other with AND circuit, and AND circuit links to each other with not circuit.
The beneficial effects of the utility model are: the utility model can be realized off-line and the online resonance coupling between step-up transformer and the fabric treating discharge system, automatically regulate in the fabric Low Temperature Plasma Treating process disturbance that difference, fabric treating velocity variations, variation of ambient temperature, air pressure change, gas discharge atmosphere because of fabric types changes or the like the discharge of plasma in low temperature that is caused, the maintenance generation is stable, all even soft low temperature plasma is handled fabric, avoid causing the perforation and the damage of fabric, significantly improve the surface property of fabric simultaneously.The utility model can satisfy the industrial continuous production demand owing to guaranteed stable down, all generations of even soft discharge of plasma in low temperature of atmospheric pressure, has the outstanding feature of energy-conservation, cleaning and stable performance.
Description of drawings
Fig. 1 is the structured flowchart of the utility model low-temperature plasma electrical source for loomage surface modification;
Fig. 2 is that the electric field magnitude of the utility model low-temperature plasma electrical source for loomage surface modification is stablized the control module structured flowchart;
Fig. 3 is the linear Power Regulation control module of the loomage surface modification structured flowchart of the utility model low-temperature plasma electrical source for loomage surface modification;
Fig. 4 is rate regulation device structured flowchart running time of the utility model low-temperature plasma electrical source for loomage surface modification;
Fig. 5 is the step-up transformer of the utility model low-temperature plasma electrical source for loomage surface modification and the structural representation of loomage surface modification device;
Among the figure: 1, rectification circuit, 2, dc bus, 3, full bridge inverter, 4, step-up transformer, 5, the loomage surface modification device, 6, the electric field measurement module, 7, electric field magnitude is stablized control module, 8, the linear Power Regulation control module of loomage surface modification, 9, running time the rate regulation device.
The specific embodiment
Low-temperature plasma electrical source produces high-frequency and high-voltage and acts on the sparking electrode of loomage surface modification device, interelectrode gas generation discharge generation plasma, and action of plasma is in fabric face, thereby reaches the loomage surface modification purpose.Therefore, low-temperature plasma electrical source relates to power technology, material science and gas discharge plasma physical intersection ambit to loomage surface modification, it is a nonlinear time-varying load for power supply that discharge plasma makes the material modification process, so the control method of power supply pair seems particularly important with loomage surface modification.
Describe the utility model below with reference to the accompanying drawings in detail, it is more obvious that the purpose of this utility model and effect will become.
As shown in Figure 1, the utility model low-temperature plasma electrical source for loomage surface modification is mainly stablized the linear Power Regulation control module 8 of control module 7, loomage surface modification by rectification circuit 1, dc bus 2, full bridge inverter 3, step-up transformer 4, loomage surface modification device 5, electric field measurement module 6, electric field magnitude and is formed.Wherein, rectification circuit 1, dc bus 2, full bridge inverter 3, step-up transformer 4, loomage surface modification device 5, electric field measurement module 6 and electric field magnitude are stablized control module 7 and are connected successively, electric field magnitude is stablized control module 7 and is linked to each other with rectification circuit 1, and the linear Power Regulation control module 8 of loomage surface modification links to each other with full bridge inverter 3.
As shown in Figure 2, electric field magnitude is stablized control module 7 and is mainly connected to form successively by amplitude detection circuit, proportional and integral controller and integrated switch driver, and the integrated switch driver can adopt the TCA785 chip of Siemens Company.
As shown in Figure 3, the linear Power Regulation control module 8 of loomage surface modification mainly by power given circuit, running time rate regulation device 9 and switch driver connect to form the M5792L mixing integrated drive electronics that switch driver can adopt Mitsubishi to produce successively.
Running time, the rate regulation device 9 mainly was made up of voltage controlled oscillator, frequency-halving circuit, pulsewidth generative circuit, AND circuit and not circuit as shown in Figure 4, after linking to each other with frequency-halving circuit, voltage controlled oscillator links to each other with AND circuit, the pulsewidth generative circuit links to each other with AND circuit, and AND circuit links to each other with not circuit.Voltage controlled oscillator can adopt the CD4046 chip, and frequency-halving circuit can adopt the CD4013 chip, and the pulsewidth circuit can adopt the NE555 circuit, and AND circuit can adopt the CD4081 chip, and not circuit can adopt the CD4049 chip.
As shown in Figure 5, the concrete parameter of step-up transformer 4 has comprised leakage inductance L
r, secondary is to the turn ratio n on former limit, and the equivalent capacity of loomage surface modification device 5 is C
o
The control method of the utility model low-temperature plasma electrical source for loomage surface modification comprises:
1, load resonant coupling
As shown in Figure 5, the natural resonance frequency f of circuit
oLeakage inductance L by step-up transformer 4
r, the turn ratio n of transformer and the equivalent capacity C of loomage surface modification device
oDecision, and following formula provides:
Because the equivalent capacity C of loomage surface modification device
oAlong with the increase of power has the trend of increase, so must guarantee natural resonance frequency f
oGreater than circuit expectation operating frequency f
s, and certain scope is arranged, general f
s＜f
o＜1.6f
sBy leakage inductance and the size realization step-up transformer 4 of the turn ratio and the off-line load resonant coupling between the loomage surface modification device 5 of adjusting step-up transformer 4.In addition, the equivalent capacity C of loomage surface modification device in the fabric treatment procedure
oExist non-linear and time variation, so must adjust full-bridge inverter 3 output voltage V in real time
ABFrequency, make it follow the tracks of the load resonant current i
rFrequency be implemented in linear load resonance coupling.The load resonant matching technique has guaranteed the optimum duty of fabric surface treatments to greatest extent, is one of key that realizes in high efficient cryogenic Cement Composite Treated by Plasma fabric.
2, the stable control of electric field magnitude
As shown in Figure 2, obtain output electric field signal V in the fabric treatment procedure by electric field measurement module 6
o, electric field signal obtains electric field magnitude feedback signal V through amplitude detection circuit
p, with given electric field magnitude signal V
p *Relatively obtain error signal, by proportional and integral controller error signal is made proportional integral and regulate the controlled signal in back, control signal is as the input of switch integrated drive, 1 operation of switch integrated drive control rectifier, thus the voltage that changes on the dc bus 2 is controlled the size of exporting electric field.Above closed-loop control has realized the function of stable output electric field magnitude in the fabric treatment procedure.
3, the linear Power Regulation control of loomage surface modification
As shown in Figure 3 and Figure 4, the pulsewidth generative circuit converts the voltage signal of power given circuit to pulse width signal, ratio running time of the corresponding full bridge inverter 3 of pulse width.Running time, ratio was meant the running time of full bridge inverter 3 in the unit interval.The required high-frequency switching signal of full bridge inverter 3 operations simultaneously can be obtained through producing 50% doublet impulse signal behind the frequency-halving circuit by voltage controlled oscillator.The signal of 50% doublet impulse signal of frequency-halving circuit output and the output of pulsewidth generative circuit by with generate the required signal of full bridge inverter 3 operations behind the door, produce the input of complementary signal by not circuit again, finally control the operation of full bridge inverter 3 by switch driver as switch driver.Because can realize the linear regulation of full bridge inverter ratio 3 running time by the linear regulation of power given circuit, so finally realize the function of the linear Power Regulation of loomage surface modification.
Claims (4)
1, a kind of low-temperature plasma electrical source for loomage surface modification, it is characterized in that it mainly stablizes control module (7) by rectification circuit (1), dc bus (2), full bridge inverter (3), step-up transformer (4), loomage surface modification device (5), electric field measurement module (6), electric field magnitude and the linear Power Regulation control module of loomage surface modification (8) is formed; Wherein, rectification circuit (1), dc bus (2), full bridge inverter (3), step-up transformer (4), loomage surface modification device (5), electric field measurement module (6) and electric field magnitude are stablized control module (7) and are connected successively, electric field magnitude is stablized control module (7) and is linked to each other with rectification circuit (1), and the linear Power Regulation control module of loomage surface modification (8) links to each other with full bridge inverter (3).
According to the described low-temperature plasma electrical source for loomage surface modification of claim 1, it is characterized in that 2, described electric field magnitude is stablized control module (7) and mainly connected to form successively by amplitude detection circuit, proportional and integral controller and integrated switch driver.
3, according to the described low-temperature plasma electrical source for loomage surface modification of claim 1, it is characterized in that the linear Power Regulation control module of described loomage surface modification (8) is mainly connected to form successively by power given circuit, rate regulation device running time (9) and switch driver.
According to the described low-temperature plasma electrical source for loomage surface modification of claim 3, it is characterized in that 4, described rate regulation device running time (9) mainly is made up of voltage controlled oscillator, frequency-halving circuit, pulsewidth generative circuit, AND circuit and not circuit; Link to each other with AND circuit after described voltage controlled oscillator links to each other with frequency-halving circuit, the pulsewidth generative circuit links to each other with AND circuit, and AND circuit links to each other with not circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201122640U CN201339139Y (en) | 2009-01-08 | 2009-01-08 | Low-temperature plasma power supply for modifying textile surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201122640U CN201339139Y (en) | 2009-01-08 | 2009-01-08 | Low-temperature plasma power supply for modifying textile surface |
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| Publication Number | Publication Date |
|---|---|
| CN201339139Y true CN201339139Y (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201122640U Expired - Fee Related CN201339139Y (en) | 2009-01-08 | 2009-01-08 | Low-temperature plasma power supply for modifying textile surface |
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| CN (1) | CN201339139Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457474B (en) * | 2009-01-08 | 2011-11-09 | 浙江大学 | Low-temperature plasma electrical source for loomage surface modification and control method thereof |
-
2009
- 2009-01-08 CN CNU2009201122640U patent/CN201339139Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457474B (en) * | 2009-01-08 | 2011-11-09 | 浙江大学 | Low-temperature plasma electrical source for loomage surface modification and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20120108 |