CN204014247U - A kind of acceleration jet flow generating apparatus - Google Patents
A kind of acceleration jet flow generating apparatus Download PDFInfo
- Publication number
- CN204014247U CN204014247U CN201420502682.1U CN201420502682U CN204014247U CN 204014247 U CN204014247 U CN 204014247U CN 201420502682 U CN201420502682 U CN 201420502682U CN 204014247 U CN204014247 U CN 204014247U
- Authority
- CN
- China
- Prior art keywords
- jet
- generating apparatus
- flow generating
- negative electrode
- positive electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Plasma Technology (AREA)
Abstract
An acceleration jet flow generating apparatus, relates to a kind of jet flow generating apparatus.Be provided with body, jet nozzle, negative electrode, positive electrode and high-voltage pulse power source; Jet nozzle is located on body, and communicates with tube cavity, negative electrode and positive electrode respectively Inserting Tube intracoelomic cavity one end and be connected with body end part seal, negative electrode and positive electrode are electrically connected to high-voltage pulse electric source output terminal.Speed can be obtained high, the synthesizing jet-flow of energy stabilization; Accelerate the jet nozzle independence moulding of jet flow generating apparatus, when making, can adjust as required its angle, obtain the jet of different directions.Thereby can be by regulating frequency, duty ratio and the on-load voltage of on-load voltage to obtain the jet of friction speed.The electric discharge of employing low frequency, electromagnetic interference is less, can not affect other equipment and normally work; Simple and compact for structure, volume is little, light and handy, is easy to processing and cost low, and shape size is convenient to be regulated; Do not need out-source gas and configuration miscellaneous equipment.
Description
Technical field
The utility model belongs to plasma discharge technical field, relates to a kind of jet flow generating apparatus, especially relates to a kind of acceleration jet flow generating apparatus.
Background technology
Atmospheric pressure plasma jet is a kind of new plasma discharge technology of rising gradually in recent years, is one of study hotspot of at present domestic and international plasma science and engineering field.
John-John Hopkins University Experiment of Applied Physics chamber of the U.S. has proposed a kind of plasma jet exciter in 2003.This exciter is comprised of the airtight nonmetal cavity body containing built-in electrode and outlet aperture, and its middle outlet is an aperture of opening on the wall of chamber.During work, its anode and negative electrode are connected high-voltage pulse power source, and in airtight cavity, electric discharge causes intracavity gas intensification expansion supercharging to force gas outwards to be extruded from unique outlet, thereby form jet.
Chinese patent CN103501572A discloses a kind of jetting type Plasma Actuator, the electrode that has the quartz glass tube of through hole and insert from its two ends, consists of, and one end of glass tube has one group of jet exit, and jet exit is small-sized circular hole.Its operation principle is identical with the exciter of John-John Hopkins University, utilizes positive electrode bar to carry out high-voltage pulse arc discharge to negative electrode bar, and air themperature in quartz glass tube is raise suddenly, and gas expansion, forms jet in quartz ampoule exit.
The existing exciter by discharge generation synthesizing jet-flow in chamber is all generally that perforate, as jet exit, is not carried out special design to the structure of outlet on cavity wall.Due to the restriction of the cavity wall thickness of exciter (as glass tube), jet exit passage is very short, is difficult to that acquisition speed is large, the more concentrated jet of energy.
Summary of the invention
The purpose of this utility model is to provide and can obtains that speed is large, energy is concentrated a kind of acceleration jet flow generating apparatus of jet.
The utility model is provided with body, jet nozzle, negative electrode, positive electrode and high-voltage pulse power source;
Jet nozzle is located on body, and communicates with tube cavity, negative electrode and positive electrode respectively Inserting Tube intracoelomic cavity one end and be connected with body end part seal, negative electrode and positive electrode are electrically connected to high-voltage pulse electric source output terminal.
Described body is preferably short cylindrical shape body, and the wall thickness of body is best >=0.5mm, internal diameter >=5mm, length >=10mm, can determine as required.The two ends diameter of described body is preferably undergauge shape, is convenient to like this electrode sealing and is connected.The diameter of the both ends open of body can be 3mm.
The runner of described jet nozzle is preferably the shape of being shunk gradually outward by the inner; Or be by the inner first contraction gradually outward, then the shape of expanding gradually; The flow channel length of jet nozzle can be 5～10mm.
Described negative electrode and positive electrode preferably adopt multicore high temperature resistant wire, insert cavity and are connected with seal of vessel respectively from the perforate of container two ends.Described negative electrode and positive electrode pipe endoceliac spacing distance best >=5mm.
Described body and jet nozzle are insulator, preferred glass or pottery.
The preferred parameter of described high-voltage pulse power source can be: output voltage 0～50kV, frequency 50～400Hz, pulse modulation frequency 10～1000Hz, pulse modulation duty ratio 5%～20%; High-voltage pulse power source can adopt commercially available prod or customization.
The utility model is the device that a kind of atmosphere pressure discharging produces synthesizing jet-flow.When loading high-voltage pulse between yin, yang electrode, between two electrodes, there are electric discharge phenomena, produce plasma, discharge amount of heat simultaneously, cavity temperature is risen sharply, gas expansion, pressure increase suddenly, from jet nozzle, to cavity, extrude, and form jet.The speed of jet is relevant with the pressure in electric discharge back cavity.If cavity pressure is not very high, outwards the effluxvelocity of ejection is subsonic speed, adopts the nozzle of contraction type passage, and gas sprays from outlet after the contraction section acceleration of jet nozzle.If cavity pressure is enough high, adopt the nozzle of contraction-expanding passage, outwards the gas velocity of ejection is accelerated through the nozzle of likeness in form Laval nozzle, thereby forms high-speed jet.After discharge generation jet, be negative pressure state in cavity, the air-breathing internal and external pressure balance that makes of container, completes an electric discharge-jet-loop.Then under high-voltage pulse power source effect, electric discharge, forms synthesizing jet-flow again again, and circulation obtains continuous jet and so forth.
Compared with the prior art, outstanding advantages of the present utility model is:
1, the discharge vessel of described acceleration jet flow generating apparatus connects the jet nozzle through design, and through one section, contraction-like or shrink-expansion shape passage is accelerated expanded gas flow, can obtain speed high, the synthesizing jet-flow of energy stabilization.
2, the jet nozzle independence moulding of described acceleration jet flow generating apparatus can be adjusted as required its angle when making, thereby obtains the jet of different directions.
3, described acceleration jet flow generating apparatus can change jet intensity by electrical quantity easily, thereby for example can be by regulating frequency, duty ratio and the on-load voltage of on-load voltage to obtain the jet of friction speed.
4, described acceleration jet flow generating apparatus adopts low frequency electric discharge, and electromagnetic interference is less, can not affect other equipment and normally work.
5, described acceleration jet flow generating apparatus composition is simple and compact for structure, and volume is little, light and handy, is easy to processing and cost low, and shape size is convenient to be regulated.
6, this jet flow generating apparatus utilizes atmosphere pressure discharging in chamber to produce synthesizing jet-flow, increases the specific aim design to jet nozzle passage, accelerates effluxvelocity, does not need out-source gas and configuration miscellaneous equipment, as air compressor or air blast, filter etc.
Accompanying drawing explanation
Fig. 1 is the structural representation (profile) of the utility model embodiment 1.
Fig. 2 is the structural representation (outside drawing) of the utility model embodiment 1.
Fig. 3 is the structural representation (profile) of the utility model embodiment 2.
Fig. 4 is the structural representation (outside drawing) of the utility model embodiment 3.
Embodiment
Embodiment 1
Referring to Fig. 1 and 2, the present embodiment is provided with body 1, jet nozzle 2, negative electrode 3, positive electrode 4 and high-voltage pulse power source V;
Body 1 is diameter 10mm, wall thickness 1mm, and the short cylindrical shape glass tube of length 30mm, body 1 two ends are through shrinking the port 5 and 6 that forms the about 3mm in aperture.Jet nozzle 2 is vitreum, is located on body 1, and communicates with body 1 inner chamber, and one end sealing that negative electrode 3 and positive electrode 4 insert respectively body 1 inner chamber are connected, and negative electrode 3 and positive electrode 4 are electrically connected to high-voltage pulse power source V output.
The runner of described jet nozzle 2 is the shape of being shunk gradually outward by the inner; The contraction section overall length 10mm of jet nozzle 2, the 4mm of aperture when being connected with body 1 inner chamber body is retracted to the 1mm of jet exit 7.
Described negative electrode 3 and positive electrode 4 adopt multicore high temperature resistant wire, and the two is at the spacing distance 10mm of body 1 inner chamber.
The preferred parameter of described high-voltage pulse power source can be: output voltage 0～50kV, frequency 50～400Hz, pulse modulation frequency 10～1000Hz, pulse modulation duty ratio 5%～20%; High-voltage pulse power source can adopt commercially available prod or customization.
When testing, when high-voltage pulse power source on-load voltage is increased to certain numerical value, yin, yang two electrodes puncture air, at the interior cavity discharging of body 1, produce plasma, outwards extruding that when gases are heated, they expand, the contraction section of process jet nozzle 2 accelerates, and in outlet, 7 places form high-speed jet Q (shown in arrow).After tested, more than the average effluxvelocity of the outlet of the present embodiment can reach 50m/s.
Embodiment 2
Referring to Fig. 3, similar to Example 1, difference is: the flow channel shape of described jet nozzle 2 is different, and jet nozzle 2 is first retracted to 0.7mm through 8mm length from aperture 4mm, then is expanded to 1mm arrival outlet through 4mm length aperture.It is corresponding consistent with embodiment 1 that all the other do not state mark.
Embodiment 3
Referring to Fig. 4, similar to Example 1, difference is: jet nozzle 2 is 45° angle setting (non-perpendicular setting) with the axis of body 1.It is corresponding consistent with embodiment 1 that all the other do not state mark.
Claims (6)
1. accelerate a jet flow generating apparatus, it is characterized in that, be provided with body, jet nozzle, negative electrode, positive electrode and high-voltage pulse power source;
Jet nozzle is located on body, and communicates with tube cavity, negative electrode and positive electrode respectively Inserting Tube intracoelomic cavity one end and be connected with body end part seal, negative electrode and positive electrode are electrically connected to high-voltage pulse electric source output terminal.
2. a kind of acceleration jet flow generating apparatus as claimed in claim 1, is characterized in that, described body is short cylindrical shape body, the wall thickness >=0.5mm of body, internal diameter >=5mm, length >=10mm.
3. a kind of acceleration jet flow generating apparatus as claimed in claim 1 or 2, is characterized in that, the two ends diameter of described body is undergauge shape.
4. a kind of acceleration jet flow generating apparatus as claimed in claim 1, is characterized in that, the runner of described jet nozzle is the shape of being shunk gradually outward by the inner; Or be by the inner first contraction gradually outward, then the shape of expanding gradually; The flow channel length of jet nozzle is 5～10mm.
5. a kind of acceleration jet flow generating apparatus as claimed in claim 1, is characterized in that, described negative electrode and positive electrode are at the endoceliac spacing distance >=5mm of pipe.
6. a kind of acceleration jet flow generating apparatus as claimed in claim 1, is characterized in that, the parameter of described high-voltage pulse power source is: output voltage 0～50kV, frequency 50～400Hz, pulse modulation frequency 10～1000Hz, pulse modulation duty ratio 5%～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420502682.1U CN204014247U (en) | 2014-09-02 | 2014-09-02 | A kind of acceleration jet flow generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420502682.1U CN204014247U (en) | 2014-09-02 | 2014-09-02 | A kind of acceleration jet flow generating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014247U true CN204014247U (en) | 2014-12-10 |
Family
ID=52054184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420502682.1U Expired - Fee Related CN204014247U (en) | 2014-09-02 | 2014-09-02 | A kind of acceleration jet flow generating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014247U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514792A (en) * | 2015-11-25 | 2016-04-20 | 南京航空航天大学 | High-energy jet-flow exciter |
| CN108194461A (en) * | 2018-03-08 | 2018-06-22 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and three electrode plasma combined type synthesizing jet-flow excitors |
| CN108223500A (en) * | 2018-03-08 | 2018-06-29 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
| CN108541125A (en) * | 2018-04-18 | 2018-09-14 | 南京航空航天大学 | A kind of interior visible plasma synthesis jet-flow excitor |
| CN108811289A (en) * | 2018-06-12 | 2018-11-13 | 厦门大学 | A kind of dynamic pressure type plasma synthesis fluidic generator |
| CN110721835A (en) * | 2019-10-09 | 2020-01-24 | 中国地质大学（武汉） | Electric cut-off type high-voltage pulse water jet generating device |
| CN110926747A (en) * | 2019-12-17 | 2020-03-27 | 哈尔滨工程大学 | High-voltage transient high-speed water jet generator and curved surface boundary wall pressure load measuring device |
| CN111729621A (en) * | 2020-06-11 | 2020-10-02 | 西北大学 | Be applied to miniature pulse fluidized bed device of superfine powder fluidization |
| CN112888135A (en) * | 2021-02-01 | 2021-06-01 | 北京环境特性研究所 | Plasma generator and electrode structure thereof |
| CN113198404A (en) * | 2021-06-02 | 2021-08-03 | 华北电力大学（保定） | Hollow cathode array discharge jet device |
-
2014
- 2014-09-02 CN CN201420502682.1U patent/CN204014247U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514792A (en) * | 2015-11-25 | 2016-04-20 | 南京航空航天大学 | High-energy jet-flow exciter |
| CN105514792B (en) * | 2015-11-25 | 2018-11-09 | 南京航空航天大学 | A kind of high energy jet stream exciter |
| CN108194461A (en) * | 2018-03-08 | 2018-06-22 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and three electrode plasma combined type synthesizing jet-flow excitors |
| CN108223500A (en) * | 2018-03-08 | 2018-06-29 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
| CN108541125A (en) * | 2018-04-18 | 2018-09-14 | 南京航空航天大学 | A kind of interior visible plasma synthesis jet-flow excitor |
| CN108811289A (en) * | 2018-06-12 | 2018-11-13 | 厦门大学 | A kind of dynamic pressure type plasma synthesis fluidic generator |
| CN110721835A (en) * | 2019-10-09 | 2020-01-24 | 中国地质大学（武汉） | Electric cut-off type high-voltage pulse water jet generating device |
| CN110926747A (en) * | 2019-12-17 | 2020-03-27 | 哈尔滨工程大学 | High-voltage transient high-speed water jet generator and curved surface boundary wall pressure load measuring device |
| CN110926747B (en) * | 2019-12-17 | 2021-07-13 | 哈尔滨工程大学 | High-voltage transient high-speed water jet generator and curved surface boundary wall pressure load measuring device |
| CN111729621A (en) * | 2020-06-11 | 2020-10-02 | 西北大学 | Be applied to miniature pulse fluidized bed device of superfine powder fluidization |
| CN112888135A (en) * | 2021-02-01 | 2021-06-01 | 北京环境特性研究所 | Plasma generator and electrode structure thereof |
| CN113198404A (en) * | 2021-06-02 | 2021-08-03 | 华北电力大学（保定） | Hollow cathode array discharge jet device |
| CN113198404B (en) * | 2021-06-02 | 2022-07-22 | 华北电力大学（保定） | Hollow cathode array discharge jet device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204014247U (en) | A kind of acceleration jet flow generating apparatus | |
| CN102595757B (en) | Three-electrode discharge device for generating large-volume atmosphere pressure plasma | |
| CN107061210B (en) | A kind of pulsed plasma thruster accelerated based on electrothermal and electromagnetic mixing | |
| CN102943751B (en) | Quick-response direct force generating device | |
| CN104320900A (en) | Air supplementing type plasma jet flow generator | |
| CN201528464U (en) | Novel atmospheric pressure jet flow cold plasma generator | |
| CN108811289A (en) | A kind of dynamic pressure type plasma synthesis fluidic generator | |
| CN106028616A (en) | Gliding arc discharge plasma jet generation device and method thereof | |
| CN102307426A (en) | Plasma generating device | |
| US3173248A (en) | Ionization and plasma acceleration apparatus | |
| CN104411083A (en) | Device and method for producing continuous low-temperature large-section atmospheric pressure plasma plumes | |
| CN201167433Y (en) | Current-jetting apparatus for medium barrier discharging plasma | |
| CN106488639B (en) | Large scale pulse cold-plasma jet generating device | |
| CN109737023A (en) | A kind of self breakdown type pulsed plasma thruster of annular vertebral body structure anode | |
| Darny et al. | Unexpected plasma plume shapes produced by a microsecond plasma gun discharge | |
| CN203377484U (en) | High-voltage double-electrode gas electric-spark switch | |
| CN106793438B (en) | Ring type electrode variable diameter jet flow generating apparatus | |
| CN108394867A (en) | A kind of pulsed discharge ozone generating apparatus | |
| CN204424208U (en) | A kind of sample introduction ionizing system for mass spectrometer | |
| CN108601193B (en) | Long-scale uniform thermal plasma arc generation method and device | |
| CN215135974U (en) | Low-temperature plasma joint cavity puncture jet device | |
| CN205812485U (en) | A kind of Gliding arc discharge plasma mjector | |
| CN106653552B (en) | A kind of plasma jet generating means | |
| CN105514792B (en) | A kind of high energy jet stream exciter | |
| CN109841492A (en) | A kind of mass spectrometer ion source of air feeding in center |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180902 |