CN210670706U - Plasma jet auxiliary device - Google Patents
Plasma jet auxiliary device Download PDFInfo
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- CN210670706U CN210670706U CN201920886255.0U CN201920886255U CN210670706U CN 210670706 U CN210670706 U CN 210670706U CN 201920886255 U CN201920886255 U CN 201920886255U CN 210670706 U CN210670706 U CN 210670706U
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Abstract
The utility model discloses a plasma efflux auxiliary device, include: the device comprises a detection control module, an interval adjuster and a grounding current-leading sheet; the detection control module is connected with the output end of a high-voltage power supply in the plasma jet device; the top surface of the interval regulator is provided with an opening and is positioned at the plasma jet nozzle, through holes and grooves are distributed on the bottom surface, and plasma jet generated by the plasma jet device flows out through the through holes on the bottom surface; the grounding drainage sheet is embedded into the bottom groove of the interval adjuster and is connected with a public ground; the detection control module is used for monitoring the voltage and current state of the plasma jet device in real time and disconnecting the high-voltage power supply of the plasma jet device when a fault occurs; the interval adjuster is used for controlling the length of the plasma jet and fixing the grounding current-leading piece; and the grounding current-guiding sheet is used for guiding the discharge plasma current. The utility model discloses can improve plasma fluidic device's safety of using, make plasma array evenly discharge simultaneously, improve the plasma performance.
Description
Technical Field
The utility model belongs to plasma application, more specifically relates to a plasma efflux auxiliary device.
Background
Atmospheric non-equilibrium plasma is plasma generated at atmospheric pressure, with electron temperatures as high as tens of thousands of degrees, and ions and neutral particles at temperatures much lower than the electron temperature, usually close to room temperature, so the gas temperature at discharge is also close to room temperature. The atmospheric pressure low-temperature plasma jet device can generate plasma jet under atmospheric pressure, the treated object is not limited by the size of a plasma discharge gap, the operation is simple and convenient, and the generated gas has low temperature and high activity. A plasma jet apparatus has been known which can generate various types of non-thermal equilibrium plasma under atmospheric pressure, and for example, patent document CN101426327A discloses a plasma jet apparatus which generates an ejected jet by blowing a working gas into a hollow gas pipe, and arranging a high voltage electrode at the outlet of the hollow gas pipe; patent document CN102523674A discloses a hand-held plasma torch, which applies a dc high voltage to a needle electrode to break down working gas between a needle point and a target surface to generate jet flow; patent document CN106304591A also discloses a multi-air duct fluidic device. At present, non-thermal equilibrium plasma has been widely applied in plasma biomedical research, such as promoting wound healing, transdermal drug delivery, sterilization, disinfection, skin care, tumor treatment, etc.
Firstly, when the current plasma jet device works, the working current flows from a high-voltage power supply to the surface of an object to be treated through the plasma jet device, then flows to the interior of the object to be treated, and finally flows back to the ground through another grounding point of the object to be treated, so that when the plasma current is increased sharply due to special reasons, a human body is likely to bear the current exceeding a safety threshold value when receiving a treated or mistakenly treated object, and the body of a user is injured; secondly, because the plasma jet device usually works under the condition of kilovolt high voltage, the damage probability of the internal components of the device is very high, and the existing plasma jet device does not have a fault diagnosis module and does not have the safety action of responding to the fault, thereby causing great potential safety hazard to users. In addition, the existing plasma jet device also has the problems that the discharge is not uniform, all high-voltage electrodes cannot discharge simultaneously, and the distribution of the generated active particles is not uniform. These are all problems to be solved in practical application of the current plasma jet device.
In general, the existing plasma jet device has the problems of low application safety and uneven distribution of generated active particles.
SUMMERY OF THE UTILITY MODEL
To the defect of prior art, the utility model aims to provide a plasma efflux auxiliary device aims at solving current plasma fluidic device and has the safety in utilization low, and the inhomogeneous problem of active particle distribution who produces.
In order to achieve the above object, the present invention provides a plasma jet assisting device, including: the device comprises a detection control module, an interval adjuster and a grounding current-leading sheet;
the detection control module is connected with the output end of a high-voltage power supply in the plasma jet device;
the top surface of the interval regulator is provided with an opening and is positioned at a plasma jet nozzle in the plasma jet device, through holes and grooves are distributed on the bottom surface, and plasma jet generated by the plasma jet device flows out through the through holes on the bottom surface;
the grounding drainage sheet is embedded into the bottom groove of the interval adjuster and is connected with a public ground;
the detection control module is used for monitoring the voltage and current state of the plasma jet device in real time and disconnecting the high-voltage power supply of the plasma jet device when a fault occurs;
the interval adjuster is used for controlling the length of the plasma jet and fixing the grounding current-guiding sheet;
the grounding current-guiding sheet is used for guiding plasma discharge current.
Further, the detection control module comprises a voltage sensor, a current sensor and an analysis control unit;
the voltage sensor is used for measuring the voltage of the input end of the plasma jet device;
the current sensor is used for measuring the current of the input end of the plasma jet device;
and the analysis control unit is used for comparing the measured voltage and current with correspondingly set thresholds respectively, and disconnecting the high-voltage power supply of the plasma jet device when the measured voltage or current exceeds the set thresholds.
Further, the distance between the bottom surface of the spacing adjuster and the plasma jet orifice in the plasma jet device can be varied.
Further, the number of plasma jet flow passing through each through hole distributed on the bottom surface of the interval regulator is one or more.
Further, the spacing adjuster is made of an insulating medium.
Further, the insulating medium is polytetrafluoroethylene alkyl resin.
Furthermore, the shape, the number and the arrangement mode of the through holes distributed on the bottom surface of the interval regulator and the arrangement mode of the grounding current-guiding sheets are determined according to the arrangement mode of a plasma array generated by the plasma jet device.
Further, the grounding current-guiding plate material is stainless steel, copper or aluminum.
Through the utility model discloses above technical scheme who thinks, compare with prior art, can gain following beneficial effect:
(1) the grounding current-leading piece arranged in the utility model, on one hand, enables the plasma discharge current to flow through the surface of the treated object and then flow into the ground through the grounding current-leading piece, prevents the plasma discharge current from directly passing through the human body, and reduces the electric shock risk of the human body; on the other hand, all the high-voltage electrodes are simultaneously discharged, the plasma array is uniformly discharged, and the generated active particles are uniformly distributed, so that the plasma performance is improved.
(2) The utility model discloses the running state that the detection control module who sets up can real-time detection plasma fluidic device, in time discovers plasma fluidic device's operational failure and potential problem, in time cuts off the power when plasma fluidic device appears unusually, avoids the human electric current that contacts to be higher than the safe threshold value, improves plasma fluidic device's safety in application.
(3) The utility model discloses the distance between plasma spout and the object of being handled can be controlled to the interval adjuster that sets up, effectively avoids because the maloperation, and the user places the plasma spout apart from the position that the object of being handled is too close to reduce the risk that receives the burn, further improve plasma fluidic device's application safety.
Drawings
Fig. 1 is a schematic structural diagram of a plasma jet assisting device according to a first embodiment of the present invention;
fig. 2(a) is a three-dimensional schematic view of a spacing adjuster used in a first embodiment of the present invention;
fig. 2(b) is a schematic structural view of the bottom surface of the spacer adjuster and the corresponding ground plate according to the first embodiment of the present invention;
fig. 3(a) shows a spacing adjuster with a circular arc-shaped opening structure on the bottom surface;
FIG. 3(b) is a schematic diagram of a structure of a ground strap corresponding to the structure of the space adjuster in FIG. 3 (a);
fig. 4(a) is a schematic view of a space adjuster with a circular arrangement of holes on the bottom surface;
FIG. 4(b) is a schematic diagram of a structure of a ground strap corresponding to the structure of the space adjuster shown in FIG. 4 (a);
fig. 5 is a schematic structural diagram of a plasma jet assisting device according to a second embodiment of the present invention;
the device comprises a high-voltage power supply 1, an analysis control unit 2, a current sensor 3, a first voltage sensor 4, a second voltage sensor 5, a protective resistor 6, a direct-current high-voltage driven air plasma array generating device 7, an interval regulator 8, a grounding current guiding sheet 9, a working gas source 10, a gas flow control switch 11 and an alternating-current high-voltage driven inert gas plasma generating device 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As a first embodiment of the present invention, the present invention provides a plasma jet assisting device, including: the detection control module, the interval adjuster 8 and the grounding current-leading piece 9;
the detection control module is connected with the output end of a high-voltage power supply in the plasma jet device;
specifically, as shown in fig. 1, the auxiliary device of the present invention is applied to a dc high voltage driven air plasma array generator 7, and accordingly, the detection control module includes an analysis control unit 2, a current sensor 3, a first voltage sensor 4 and a second voltage sensor 5;
the first voltage sensor 4 and the second voltage sensor 5 are each used to measure the voltage across the protection resistor 6.
The current sensor 3 is used for measuring the current of the high-voltage input end of the air plasma array;
and an analysis control unit 2 for comparing the measured voltage and current with correspondingly set thresholds, respectively, and disconnecting the high voltage power supply 1 when the measured voltage or current exceeds the set thresholds.
The top surface of the interval regulator 8 is provided with an opening, the interval regulator is positioned at a plasma jet nozzle of the air plasma array generating device 7, through holes and grooves are distributed on the bottom surface, and plasma jet generated by the air plasma array generating device 7 flows out through the through holes on the bottom surface;
when the plasma jet length adjusting device is used, the bottom surface of the interval adjuster 8 is in contact with an object to be processed, and the plasma jet length is adjusted by adjusting the distance between the bottom surface and the plasma array high-voltage needle electrode.
The grounding current-leading piece 9 is embedded into the bottom groove of the interval adjuster 8 and is connected with the public ground;
the structure of the spacer adjuster in this embodiment is as shown in fig. 2(a), the used material may be teflon alkyl resin, and since the used plasma array is a 7 × 10 arrangement, correspondingly, there are 7 rectangular through holes on the bottom surface of the spacer adjuster, and each through hole corresponds to 10 high-voltage needle electrodes arranged linearly, but the present invention is not limited thereto, the number of plasma jets passing through each through hole distributed on the bottom surface of the spacer adjuster is one or more; in practical application, the shape, the number and the arrangement mode of the through holes can be correspondingly adjusted according to the arrangement mode of the plasma array; a spacer having a bottom surface with a circular arc-shaped opening structure as shown in fig. 3(a), and a spacer having a bottom surface with a circular array opening structure as shown in fig. 4 (a); the interval adjuster of the utility model can be made of other insulating media.
In this embodiment, the schematic structural diagrams of the bottom surface of the interval adjuster and the corresponding grounding current-guiding plate are shown in fig. 2(b), and the grounding current-guiding plate is embedded in the groove of the bottom surface of the interval adjuster, is flush with the bottom surface of the interval adjuster, and is arranged around the plasma, but the present invention is not limited thereto, and the distribution mode of the grounding current-guiding plate can be adjusted correspondingly according to the arrangement mode of the plasma array, such as a grounding current-guiding plate structure shown in fig. 3(b) corresponding to the structure of the interval adjuster shown in fig. 3(a), and a grounding current-guiding plate structure shown in fig. 4(b) corresponding to the structure of the interval adjuster shown in fig. 4 (a); the material of the middle grounding current-leading piece of the utility model can be stainless steel, copper or aluminum.
The air plasma array generating device 7 generates a surrounding plasma array arrangement, the discharge current passes through the surface of the processed object and finally flows into the ground through the grounding current guide plate, so that the problems that the plasma array is not uniform in discharge and all the needle electrodes cannot discharge simultaneously can be solved, the plasma electric field can be more uniform, and the performance of the plasma is enhanced; on the other hand, when the object to be treated is human skin or tissue, the discharge current passes through the surface of the treated skin and finally flows into the ground through the grounding current guide sheet, so that the human body can be isolated from the plasma loop, and the electric touch feeling and the potential electric shock risk of the human body are greatly reduced.
As a second embodiment of the present invention, the utility model discloses an auxiliary device uses in exchanging high pressure driven inert gas plasma generating device, as shown in fig. 5, used ac power supply's frequency range can be between tens of hertz to hundreds of kilohertz, and operating gas is the helium, and gas flow control switch 11 controls the operating gas of operating gas source 10 and produces the helium plasma in getting into plasma generator, because the power is ac power supply, and ground connection drainage piece 9 is fixed inside 8 bottom surface recesses of interval adjuster, all the other structures with the utility model discloses first embodiment does not have obvious difference.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A plasma-jet assist device, comprising: the device comprises a detection control module, an interval adjuster and a grounding current-leading sheet;
the detection control module is connected with the output end of a high-voltage power supply in the plasma jet device;
the top surface of the interval regulator is provided with an opening and is positioned at a plasma jet nozzle in the plasma jet device, through holes and grooves are distributed on the bottom surface, and plasma jet generated by the plasma jet device flows out through the through holes on the bottom surface;
the grounding drainage sheet is embedded into the bottom groove of the interval adjuster and is connected with a public ground;
the detection control module is used for monitoring the voltage and current state of the plasma jet device in real time and disconnecting the high-voltage power supply of the plasma jet device when a fault occurs;
the interval adjuster is used for controlling the length of the plasma jet and fixing the grounding current-guiding sheet;
the grounding current-guiding sheet is used for guiding plasma discharge current.
2. The plasma-jet assisting device as claimed in claim 1, wherein the detection control module comprises a voltage sensor, a current sensor and an analysis control unit;
the voltage sensor is used for measuring the voltage of the input end of the plasma jet device;
the current sensor is used for measuring the current of the input end of the plasma jet device;
and the analysis control unit is used for comparing the measured voltage and current with correspondingly set thresholds respectively, and disconnecting the high-voltage power supply of the plasma jet device when the measured voltage or current exceeds the set thresholds.
3. A plasma jet assist device as claimed in claim 1 or 2, wherein the distance between the bottom surface of the spacing adjuster and the plasma jet orifice of the plasma jet means is adjustable.
4. A plasma jet assisting device as claimed in claim 3, wherein the number of plasma jets passing through each of the through holes provided in the bottom surface of the interval adjuster is one or more.
5. A plasma-jet assisting device as claimed in claim 4, wherein the spacing adjuster is made of an insulating medium.
6. A plasma jet assist device as claimed in claim 5, wherein the dielectric medium is a polytetrafluoroethylene-based resin.
7. A plasma jet assisting device as claimed in claim 4, wherein the shape, number and arrangement of the through holes distributed on the bottom surface of the interval adjuster and the arrangement of the ground current guiding plate are determined according to the arrangement of the plasma array generated by the plasma jet device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886255.0U CN210670706U (en) | 2019-06-13 | 2019-06-13 | Plasma jet auxiliary device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886255.0U CN210670706U (en) | 2019-06-13 | 2019-06-13 | Plasma jet auxiliary device |
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| CN210670706U true CN210670706U (en) | 2020-06-02 |
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| CN201920886255.0U Active CN210670706U (en) | 2019-06-13 | 2019-06-13 | Plasma jet auxiliary device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110213872A (en) * | 2019-06-13 | 2019-09-06 | 华中科技大学 | A kind of plasma jet auxiliary device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110213872A (en) * | 2019-06-13 | 2019-09-06 | 华中科技大学 | A kind of plasma jet auxiliary device |
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Effective date of registration: 20220616 Address after: 430200 No. C001, building B4, biological innovation park, No. 666, Gaoxin Avenue, East Lake New Technology Development Zone, Wuhan, Hubei Patentee after: Wuhan hisplai Life Technology Co.,Ltd. Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 1037 Patentee before: HUAZHONG University OF SCIENCE AND TECHNOLOGY |
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