CN114954920A - Arc discharge exciter device with variable airflow flowing direction and working method - Google Patents
Arc discharge exciter device with variable airflow flowing direction and working method Download PDFInfo
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- CN114954920A CN114954920A CN202210246317.8A CN202210246317A CN114954920A CN 114954920 A CN114954920 A CN 114954920A CN 202210246317 A CN202210246317 A CN 202210246317A CN 114954920 A CN114954920 A CN 114954920A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
- B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
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Abstract
The invention discloses an arc discharge exciter device with changeable airflow flowing direction and a working method thereof, and the arc discharge exciter device comprises a pulse power supply device, an electrode and an exciter main body, wherein the electrode is arranged on the exciter main body and is electrically connected with the pulse power supply device, the exciter main body comprises a supporting shell, a permanent magnet assembly, a transmission assembly and an angle adjusting piece, the permanent magnet assembly is placed in the supporting shell, two sides of the permanent magnet assembly are provided with extending shafts extending out of the supporting shell, the transmission assembly is arranged in the supporting shell, the angle adjusting piece is in contact with one end of the transmission assembly, the other end of the transmission assembly is in contact with the extending shafts of the permanent magnet assembly, when the arc discharge exciter device works, the angle adjusting piece rotates to drive the transmission assembly to rotate, and the transmission assembly rotates to drive the permanent magnet assembly to rotate so as to change the airflow flowing direction. The invention realizes the deflection of the jet flow direction through the mechanical transmission between the parts of the non-metallic materials with different characteristics and the permanent magnet under the condition of not additionally consuming energy.
Description
Technical Field
The invention relates to an exciter device and a working method, in particular to an arc discharge exciter device with variable airflow flowing direction and a working method.
Background
The plasma and magnetic fluid flow control technology is a new concept active flow control technology, and controllable disturbance is applied to a flow field through pressure and temperature changes caused by gas discharge, and interaction between an electromagnetic field and a conductive fluid is carried out, so that the flow characteristics are controlled. Compared with the traditional air inlet flow control, the air inlet flow control device has the characteristics of no moving part, quick response, wide excitation frequency band and the like. The surface arc discharge is an exciter with high excitation intensity and strong control effect, and an excitation electrode of the exciter can be embedded in the interior of an airplane wing and also can be directly laid on the outer surface of the airplane wing, so that the exciter is mainly applied to high-speed flow control.
But surface arcing, while using thermal effects for flow control, produces convection currents that can only move up perpendicular to the exciter surface. When the surface arc discharge exciter is fixed on the surface of the aircraft, the flow direction of the airflow generated by the exciter cannot be changed due to the fixed configuration of the aircraft, which is not favorable for active flow control. And when there is incoming flow, the direction of the air flow can not be deflected according to the actual requirement, which is very unfavorable for the active flow control. In addition, the current surface arc exciter is simple and crude in manufacture, and the manufacture material is selected singly, and mainly comprises photosensitive resin and ceramic.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an arc discharge exciter device with a variable airflow flowing direction and a working method thereof, and solves the problems that the airflow flowing direction generated by the existing exciter cannot be changed and the deflection cannot be controlled.
The technical scheme is as follows: the invention relates to an arc discharge exciter device with changeable airflow flowing direction, which comprises a pulse power supply device, an electrode and an exciter main body, wherein the electrode is arranged on the exciter main body and is electrically connected with the pulse power supply device, the exciter main body comprises a supporting shell, a permanent magnet assembly, a transmission assembly and an angle adjusting piece, the permanent magnet assembly is arranged in the supporting shell, the bottom of the permanent magnet assembly is connected with the supporting shell through an elastic device, protruding shafts extending out of the supporting shell are arranged on two sides of the permanent magnet assembly, the transmission assembly is arranged in the supporting shell, the angle adjusting piece is in contact with one end of the transmission assembly, the other end of the transmission assembly is in contact with the protruding shafts of the permanent magnet assembly, a bulge which can be clamped into the supporting shell for positioning is arranged on the angle adjusting piece, and the angle adjusting piece rotates to drive the transmission assembly to rotate, the transmission component rotates to drive the permanent magnet component to rotate so as to change the flowing direction of the airflow.
The permanent magnet assembly comprises a permanent magnet fixing shell and a permanent magnet, and the permanent magnet is placed in the permanent magnet fixing shell.
In order to prevent additional interference from generating to damage the magnetic field, the angle adjusting piece, the transmission assembly, the supporting shell and the permanent magnet fixing shell are all made of insulating non-metallic materials.
Preferably, the angle adjusting part and the transmission assembly are both made of polyether sulfone, the supporting shell is made of polyimide, and the permanent magnet fixing shell is made of bismaleimide.
Preferably, the transmission assembly comprises a long transmission rod and a short transmission rod, the long transmission rod is installed in the support straight tube, the short transmission rod is installed in the support bent tube, one end of the support bent tube is sleeved on the long transmission rod, the other end of the support bent tube is sleeved on the extension shaft of the permanent magnet assembly, one end of the long transmission rod is connected with the short transmission rod through a transmission gear set which is meshed with the long transmission rod, and the other end of the long transmission rod is connected with the angle adjusting piece through a transmission gear set which is meshed with the angle adjusting piece.
In order to realize the rotation of the transmission assembly and the permanent magnet assembly, arc grooves are respectively arranged on the long transmission rod and the short transmission rod, balls capable of realizing the rotation of the long transmission member or the short transmission rod in the corresponding supporting tubes are arranged in the arc grooves, arc grooves are arranged on extension shafts of the permanent magnet assembly, and balls capable of realizing the rotation of the extension rods in the supporting shell are arranged in the arc grooves.
In order to conveniently determine the rotation angle, the support shell is provided with angle calibration scales corresponding to the angle adjusting piece.
The electrode is a string-shaped pure tungsten electrode, and the surface of the electrode is flush with the surface of the supporting shell.
In order to prevent the permanent magnet from forming a path with the electrode under a high voltage state to cause the device to generate short circuit and fail to work normally, a spacer is arranged between the inner surface of the support shell and the permanent magnet, and the spacer is a polyethylene-high phenyl silicone rubber spacer.
The invention relates to a working method of an arc discharge exciter device with variable airflow flowing direction, which comprises the following steps:
(1) the pulse power supply applies high voltage between the electrodes to break down gas to generate charged particle flow;
(2) the angle adjusting piece rotates to drive the angle of the permanent magnet assembly to change, an included angle between a magnetic field generated by the permanent magnet and the electrode changes, and the Lorentz magnetic force of the magnetic field changes the action direction of the charged particles, so that the change of the flowing direction of the airflow is realized.
Has the advantages that: the invention realizes the deflection of the jet flow direction through the mechanical transmission among the non-metallic material parts with different characteristics and the permanent magnet under the condition of not additionally consuming energy; the arc exciter is manufactured by the non-metallic material, so that the manufacturing difficulty of the exciter is reduced, and the practicability of the exciter is improved; the deflection of the jet flow direction at any angle within-90 degrees can be realized, the initiative and the application range of the surface arc discharge exciter in practical application are greatly improved, and the flow control efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the actuator body structure;
FIG. 3 is a schematic view of the transmission assembly;
FIG. 4 is a schematic view of a permanent magnet stationary housing;
FIG. 5 is a schematic view of the angle adjuster;
FIG. 6 is a schematic view of a support elbow configuration;
FIG. 7 is a directional diagram of airflow in the presence/absence of a magnetic field after application of a pulse voltage;
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the arc discharge exciter device with a variable airflow direction provided by this embodiment includes a pulse power supply device 1, an electrode 2, a supporting shell 31, a transmission assembly, a permanent magnet fixing shell 7 and a permanent magnet, wherein a chordal pure tungsten electrode is arranged on the supporting shell 31, so that the exposed surface of the electrode is flush with the surface of the supporting shell 31, the electrode is connected with the pulse power supply device through a wire, the pulse power supply is turned on through a synchronous signal controller, and high voltage breakdown gas is applied between the chordal electrodes, thereby obtaining plasma; the stable charged particle flow is obtained by adjusting the discharge frequency and the pulse width of the pulse power supply, the basic flow control capability of the surface arc discharge exciter is realized, and the stable convection is generated.
As shown in fig. 2 to 6, the permanent magnet assembly is placed in the supporting housing 31, the permanent magnet assembly includes a permanent magnet fixing housing 7 and a permanent magnet, the permanent magnet is placed in the permanent magnet fixing housing 7, an elastic device 13 is disposed between the bottom of the permanent magnet fixing housing 7 and the supporting housing, in this example, a spring is preferred, the spring is used for fixing and supporting the angle, if no spring is provided, the transmission device can rotate all the time, the angle cannot be fixed, and the rotation amount of the transmission mechanism can be fixed through the cooperation of the spring and the protrusion. Meanwhile, when a new angle needs to be adjusted, the protrusion is withdrawn from the device shell, and the spring can enable the support shell of the permanent magnet to rebound to the original position, so that the adjustment of the new angle is facilitated. The two sides of the permanent magnet fixed shell are provided with extending shafts extending out of the supporting shell, the transmission component comprises two long transmission rods 4 and two short transmission rods 5, the two long transmission rods 4 are arranged in supporting straight pipes which are arranged in the supporting shell 31, the two short transmission rods 5 are respectively arranged in two supporting bent pipes 6, the two supporting bent pipes 6 are U-shaped structures, the two supporting bent pipes 6 are respectively arranged at the two sides of the supporting shell 31, one end of each supporting bent pipe 6 is sleeved on the corresponding long transmission rod 4, the other end of each supporting bent pipe 6 is sleeved on the corresponding extending shaft 10 of the permanent magnet fixed shell, the supporting bent pipes 6 play a role of fixing the short transmission rods 5, one end of each long transmission rod 4 is connected with the corresponding short transmission rod 5 through a meshed transmission gear set, the other end of each long transmission rod is connected with the angle adjusting piece 8 through a meshed transmission gear set, the long transmission rod and the short transmission rod are respectively provided with an arc groove, the support device comprises an arc groove, balls 9 capable of realizing rotation of a long transmission piece 4 or a short transmission rod 5 in a corresponding support pipe are installed in the arc groove, arc grooves 11 matched with the balls are formed in the support bent pipe and the support straight pipe along the circumference of the inner wall, an extension shaft 10 of a permanent magnet assembly is provided with the arc groove, the balls capable of realizing rotation of the extension rod in a support shell are installed in the arc groove, a protrusion capable of being clamped into the support shell for positioning is arranged on an angle adjusting piece, the protrusion is a triangular protrusion angle mark, the support shell is provided with angle calibration scales corresponding to the angle adjusting piece, a dial gauge is read through the triangular protrusion angle mark for accurate adjustment and control of airflow flow deflection angles, a spacer 12 is arranged between the inner surface of the support shell and a permanent magnet, the spacer 12 is a polyethylene-high phenyl silicone rubber spacer, and the surface of the permanent magnet is ensured not to be in contact with the support shell. Due to the material property of the permanent magnet and the small distance between the discharge electrode and the permanent magnet, which ranges from 0 mm to 2mm, a passage is easily formed between the discharge electrode and the permanent magnet under a high voltage state. This can result in short circuits in the device that do not work properly and can destroy the performance of the magnetic field generated by the permanent magnets. In order to solve the problem, a layer of spacing sheet is arranged between the permanent magnet fixing shell and the lower surface of the electrode. Metallic spacers in the conventional sense are undesirable, since electrical conductivity only accelerates short circuiting of the device. The non-metallic material has insulation, but the manufactured spacer is thick. The larger the spacing distance between the electrode and the permanent magnet is, the smaller the Loran magnetic force of the magnetic field acting on the charged particles is, and the invention provides a method for manufacturing a solid spacer by using a colloid material. The high phenyl silicone rubber is one of colloids with insulativity, and the manufacturing cost is lower. This reduces the performance of the device in order to enable it to be cured to the target pattern and to control the thickness of the spacer to within 0.1 mm. The spacer made of a polymer material can be manufactured to have a thickness of 0.1mm or less, but the manufacturing cost is high. To solve the problem, a polyethylene resin material having excellent electrical insulation properties is provided. Uniformly paving high phenyl silicone rubber on a polyethylene film, and uniformly baking the polyethylene film by using a constant-temperature hot air gun at 35 ℃ to solidify the polyethylene film, thereby finally obtaining the spacer with the thickness of 0.1 mm. The spacer manufactured by the method can still control the thickness and the cost of the spacer when the purpose of isolating the electrode from the permanent magnet is achieved.
The adjustment of the angular deflection means is achieved by mechanical transmission between the various non-metallic material parts through engagement between the bevel gears. The long drive rod and the short drive rod are meshed together through a bevel gear. The adjusting piece is rotated to directly drive the long transmission rod to rotate, the long transmission rod can rotate in the device shell due to the existence of the balls, and then the short transmission rod is driven to rotate through the meshing of the bevel gears, so that the permanent magnet shell is driven to rotate up and down, and the deflection of the magnetic field angle is realized.
During the operation of the device, the whole device is in the environment of high voltage and strong current because the heat convection is generated by discharging gas through high voltage. And because of the existence of the permanent magnet, the inside of the whole device is also in a strong magnetic environment. Therefore, conventional metal materials are not suitable, and may cause additional interference, such as damage to the magnetic field and short-circuiting of the device. And the non-metal material is a good device manufacturing material due to the insulating and magnetic properties of the non-metal material. However, the whole device has requirements on the rigidity, wear resistance and processability of parts, and must have high strength, high wear resistance and easy processing. Therefore, in combination with the functions of each part, the whole device is made of different organic polymer materials, including various transmission parts, gears, springs, ball bearings and the like. In this case, the angle adjusting element and the transmission assembly are preferably made of polyethersulfone, the support housing is preferably made of polyimide, the permanent magnet fixing housing is preferably made of bismaleimide, and the spring is made of cyanate resin.
When the angle is adjusted, the angle adjusting piece is rotated, the angle is calibrated through the triangular mark on the angle adjusting piece, after the angle adjusting piece rotates to a specified degree, the angle adjusting piece is pushed into the supporting shell, and the protrusion is clamped into the supporting shell to be positioned and fixed. The mechanical transmission process during rotation is that the gear end of the rotation angle adjusting piece drives the gear at one end of the long transmission rod to rotate, the rotation is transmitted to the short transmission rod under the support of the ball, then the rotation is transmitted to the gear end of the extension rod of the permanent magnet fixing shell under the action of the ball and the support bent pipe, and the permanent magnet fixing shell rotates under the action of the ball and the support shell, so that the change of the magnetic field direction is realized, the change of the Loran magnetic force on the action direction of the charged particles is realized, and the controllable deflection of the jet flow direction is realized. When the jet flow direction needs to be changed, the protrusion on the knob is pulled out of the supporting shell, the spring automatically restores to the angle zero position and then adjusts again, or the knob is directly rotated to a designated angle.
The working process of the invention is as follows:
firstly, the knob of the device is rotated to a calibrated 0-degree position, and the actual included angle between the permanent magnet fixed shell and the horizontal plane is 70 degrees. When the knob is adjusted by rotating the angle, two knob parts are preferably adjusted together. It is also permissible to rotate one of the knobs to a target angle and then rotate the other knob. When the two adjusting knobs are rotated, the bevel gears of the knobs drive the long transmission parts, which in turn drive the short transmission parts. Finally, the short transmission part drives a bevel gear of an extending shaft on the permanent magnet fixing shell to enable an angle between the permanent magnet and the electrode to deflect, and therefore deflection of the magnetic field direction is achieved. When the knob rotates to a calibrated 65 degrees, the adjusting knob is pushed into the supporting shell, so that the triangular angle mark is clamped on the supporting shell, the adjusted angle is fixed, and the whole device keeps balance under the action of the spring. At this time, the distance between the body of the permanent magnet and the electrode is far. When the permanent magnet is spaced far from the electrodes, the lorentn magnetic force of the magnetic field acting on the charged particles becomes weak, and there is little change in the direction of flow of the thermal convection. At this time, the parameter panel of the nanosecond pulse power supply was set to a voltage of 20kV, a frequency of 100Hz, and a pulse width of 50 μ s. The power switch is then opened and a high voltage pulse is applied to the actuator. Under the action of high voltage, a high-voltage electric field is formed between the chord type tungsten electrodes, gas is rapidly broken down, and therefore a large amount of charged particles are released, and a large amount of heat is released to form heat convection. But the effect of the hour-lorentz magnetic force on the charged particles is therefore weak, so that the flow direction of the gas stream is hardly changed. As in the left panel of fig. 7. At this time, the flow direction of the convection is vertically upward, and the angle of the convection flow direction is recorded as 0 °.
Then, the pulse power supply is turned off. The triangular angle mark of the adjusting knob is pulled out of the supporting shell, and the permanent magnet fixing shell can be rebounded to the original position under the action of the spring. When the fixed shell of the permanent magnet rebounds to the original position, the two adjusting knobs are rotated again, the knobs are rotated to the 90-degree positions of the calibration scales, and the actual included angle between the fixed shell of the permanent magnet and the horizontal plane is 0 degree. And simultaneously, rotating the two adjusting knobs to the calibration positions, and pushing the triangular angle marks and the angles of the fixing devices into the supporting shell. At the moment, the magnetic field intensity formed by the permanent magnet on the surface of the electrode is within 0.35-0.45T. Then, the parameter panel of the nanosecond pulse power supply was set to a voltage of 20kV, a frequency of 100Hz, and a pulse width of 50 μ s. When the switch of the power supply is turned on, the charged particles are subjected to the action of the magnetic force of the lorentz to deflect directionally, so that the flowing direction of the convection current is deflected. As in the right drawing of fig. 7, the flow direction of the convection current is now to the left, and the angle of the convection current flow direction is noted as 90 °. And after the flow control effect is achieved, the power supply is turned off, and the corner mark is pulled out. The device has obvious deflection effect of the airflow flowing direction under other pulse voltage parameters and rotation angles, can realize adjustment of the airflow direction within the range of-90 degrees, and can realize adjustment of-90-0 degrees by reversely mounting the permanent magnet.
When the arc discharge breaks down gas, convection current generated is carried with a large number of charged particles, at the moment, under the action of an external magnetic field, Lorentz magnetic force can drive the charged particles to move, so that the whole convection current can be driven to move, macroscopic local deflection finally occurs, a required airflow flowing deflection angle is achieved, and the practicability and the application range of the active flow technology are greatly improved. The device of the invention adjusts the direction of the magnetic field through the angle adjusting piece, is realized only by mechanical transmission among a plurality of parts, does not need to consume extra energy, and improves the efficiency of the active flow technology.
The direction of airflow flow of the device and the device without the device is shown in figure 6, wherein convection is vertical to the upward state in the absence of the magnetic field device, convection is deflected to the left in the presence of the magnetic field device, the intensity of magnetic field correspondingly generated by the magnetic field device is 0.35-0.45T on the surface of the electrode, the angle calibration scale is 10 degrees, and the Loran magnetic force acting on charged particles is oriented to the left. It is apparent from the figure that the flow direction of the air flow is obviously deflected when the magnetic field device and the angle deflection device are arranged. The device also has obvious airflow flow direction deflection effect under other pulse voltage parameters and rotation angles, and the device can realize adjustment of the airflow direction within the range of-90 degrees.
When the arc discharge breaks down the gas, the convection current generated has a large amount of charged particles, and at the moment, under the action of an external magnetic field, the Lorentz magnetic force can drive the charged particles to move, so that the whole convection current can be driven to move, and finally, macroscopic local deflection is generated, so that the required airflow flow deflection angle is achieved, and the efficiency of the active flow technology is greatly improved. The device of the invention adjusts the direction of the magnetic field through the angle adjusting piece, is realized only by mechanical transmission among a plurality of parts, does not need to consume extra energy, and greatly improves the efficiency of the active flow technology.
Claims (10)
1. The utility model provides a changeable arc discharge exciter device of airflow flow direction, includes pulse power supply unit (1), electrode (2) and exciter main part (3), electrode (2) set up in the exciter main part and are connected with pulse power supply unit electricity, its characterized in that, the exciter main part includes support casing (31), permanent magnet subassembly, drive assembly and angle adjustment spare, the permanent magnet subassembly is placed in the support casing, be connected through resilient means (13) between permanent magnet subassembly bottom and the support casing, the permanent magnet subassembly both sides are provided with extension shaft (10) that extend to outside the support casing, drive assembly installs in the support casing, angle adjustment spare (8) touch with drive assembly one end and connect, the drive assembly other end touches with the extension shaft of permanent magnet subassembly and connects, be provided with on angle adjustment spare (8) and block into the arch that supports the casing and fix a position, the angle adjusting piece rotates to drive the transmission assembly to rotate, and the transmission assembly rotates to drive the permanent magnet assembly to rotate so as to change the flowing direction of the airflow.
2. An airflow direction variable arc discharge actuator device according to claim 1, characterized in that the permanent magnet assembly comprises a permanent magnet fixed housing (7) and a permanent magnet, and the permanent magnet is placed in the permanent magnet fixed housing (7).
3. The variable airflow direction arc discharge actuator apparatus of claim 2 wherein the angle adjustment member, the transmission assembly, the support housing and the permanent magnet mounting housing are made of non-metallic insulating material.
4. The arc discharge actuator device with the variable airflow direction according to claim 2, wherein the angle adjusting member and the transmission assembly are both made of polyether sulfone, the support housing is made of polyimide, the permanent magnet fixing housing is made of bismaleimide, and the elastic device is made of cyanate resin.
5. The arc discharge actuator device with variable airflow direction according to claim 2, wherein the transmission assembly comprises a long transmission rod (4) and a short transmission rod (5), the long transmission rod (4) is installed in a support straight tube, the short transmission rod (5) is installed in a support bent tube (6), one end of the support bent tube is sleeved on the long transmission rod, the other end of the support bent tube is sleeved on the permanent magnet assembly extension shaft, one end of the long transmission rod is connected with the short transmission rod through a transmission gear set which is meshed, and the other end of the long transmission rod is connected with the angle adjusting piece through a transmission gear set which is meshed.
6. The arc discharge exciter apparatus with variable airflow direction according to claim 5, characterized in that the long driving rod and the short driving rod are respectively provided with arc grooves, balls capable of realizing rotation of the long driving rod or the short driving rod in the corresponding support tube are installed in the arc grooves, an arc groove is arranged on the extension shaft of the permanent magnet assembly, and balls (9) capable of realizing rotation of the extension rod in the support housing are installed in the arc grooves.
7. An arc discharge actuator apparatus with variable airflow direction according to claim 1, wherein the support housing is provided with an angle calibration scale corresponding to the angle adjustment member.
8. The variable airflow direction arc discharge stimulator device according to claim 1, wherein the electrodes are chord-type pure tungsten electrodes with a surface flush with the support housing surface.
9. An arc discharge actuator apparatus with variable airflow direction according to claim 1, wherein a spacer is disposed between the inner surface of the support housing and the permanent magnet, and the spacer is a polyethylene-high phenyl silicone rubber spacer.
10. A method of operating an arc discharge actuator apparatus having a variable direction of airflow according to any of claims 1 to 9, comprising the steps of:
(1) the pulse power supply applies high voltage between the electrodes to break down gas to generate charged particle flow;
(2) the angle adjusting piece rotates to drive the angle of the permanent magnet assembly to change, an included angle between a magnetic field generated by the permanent magnet and the electrode changes, and the Lorentz magnetic force of the magnetic field changes the action direction of the charged particles, so that the change of the flowing direction of the airflow is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210246317.8A CN114954920B (en) | 2022-03-14 | Arc discharge exciter device with variable airflow flowing direction and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210246317.8A CN114954920B (en) | 2022-03-14 | Arc discharge exciter device with variable airflow flowing direction and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114954920A true CN114954920A (en) | 2022-08-30 |
| CN114954920B CN114954920B (en) | 2024-06-28 |
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