阅读说明：本技术 一种螺旋转刃增幅式电弧放电装置 (Spiral blade-rotating amplification type arc discharge device ) 是由 宋颖 张愿雄 刘佳宏 高允珂 吴云峰 陈长福 于 2021-08-18 设计创作，主要内容包括：本发明属于放电装置领域,公开了一种螺旋转刃增幅式电弧放电装置。本发明传动齿轮固定在刀片电极上端顶部,刀片电极连接金属连接杆从中空部分轴心穿过与上部传动齿轮相连,传动齿轮下部设置一个同轴的驱动供电连接模块,刀片电极通过金属连接杆与上端传动齿轮和驱动供电连接模块相连,放电复合腔体位于驱动供电连接模块的下端,轴心位置开孔穿过刀片电极的金属连接杆,螺旋电极由上至下盘旋在放电复合腔体内部侧壁,且螺旋电极的上端和下端均与复合腔体侧壁开孔设置接地相连,螺旋电极和刀片电极间隙与放电复合腔体对应的上方位置设有通气结构,提供了一种高效、安全、可靠的滑动电弧放电装置。(The invention belongs to the field of discharge devices, and discloses a spiral blade-rotating amplification type arc discharge device. The transmission gear is fixed on the top of the upper end of the blade electrode, the blade electrode is connected with a metal connecting rod, the metal connecting rod penetrates through a hollow part from the shaft center and is connected with the upper transmission gear, a coaxial driving power supply connecting module is arranged on the lower portion of the transmission gear, the blade electrode is connected with the upper transmission gear and the driving power supply connecting module through the metal connecting rod, the discharging composite cavity is located at the lower end of the driving power supply connecting module, an opening in the shaft center position penetrates through the metal connecting rod of the blade electrode, the spiral electrode is spirally wound on the inner side wall of the discharging composite cavity from top to bottom, the upper end and the lower end of the spiral electrode are both grounded and connected with the opening in the side wall of the composite cavity, and a ventilation structure is arranged above the gap between the spiral electrode and the blade electrode and the discharging composite cavity, so that the high-efficiency, safety and reliability sliding arc discharging device are provided.)

1. A spiral blade-rotating amplification type arc discharge device is characterized by comprising a transmission gear (1), a driving power supply connection module (2), a discharge composite cavity (4), a blade electrode (5), a spiral electrode (6), a ground (7) and a ventilation structure (8);

the transmission gear (1) is fixed on the top of the upper end of the blade electrode (5), the blade electrode (5) is connected with a metal connecting rod (2-3) and penetrates through a hollow part shaft center to be connected with the upper transmission gear (1), a coaxial driving power supply connecting module (2) is arranged on the lower portion of the transmission gear (1), the blade electrode (5) is connected with the upper transmission gear (1) and the driving power supply connecting module (2) through the metal connecting rod (2-3), the discharge composite cavity (4) is positioned at the lower end of the driving power supply connecting module (2), a hole is formed in the shaft center position to penetrate through the metal connecting rod (2-3) of the blade electrode (5), the spiral electrode (6) is spirally wound on the inner side wall of the discharge composite cavity (4) from top to bottom, and the upper end and the lower end of the spiral electrode (6) are both connected with the hole of the side wall of the composite cavity (4) to be grounded (7), and a ventilation structure (8) is arranged at the upper position corresponding to the discharge composite cavity (4) in the gap between the spiral electrode (6) and the blade electrode (5).

2. The spiral blade-amplified arc discharge device as claimed in claim 1, wherein the driving power supply connection module (2) is a multi-point contact connection design, and is made of conductive metal material and has a hollow cylindrical structure.

3. The spiral blade-amplified arc discharge device of claim 2, wherein the driving power supply connection module (2) comprises a high voltage connector (2-0), a groove (2-1), a metal brush (2-2), and a metal connecting rod (2-3), wherein the metal brush (2-2) comprises a peripheral metal brush (2-2-1), a peripheral metal brush connecting metal ring (2-2-2), a central metal brush (2-2-3), and a central metal brush connecting metal ring (2-2-4); the central position of the right upper end and the central position of the side wall of the groove (2-1) are both provided with holes, a metal connecting rod (2-3) is vertically inserted from a central hole at the right upper end of the groove (2-1), a high-voltage connector (2-0) is connected from a hole at the central position of the side wall of the groove (2-1) and is communicated with a peripheral metal brush connecting metal ring (2-2-2), and the peripheral metal brush connecting metal ring (2-2-2) is fixed at the central position of the groove (2-1); the surface of the peripheral metal brush connecting metal ring (2-2-2) is provided with a step-shaped peripheral metal brush (2-2-1), the central metal brush connecting metal ring (2-2-4) is connected with and fixed on the metal connecting rod (2-3), and the height of the central metal brush connecting metal ring is the same as that of the peripheral metal brush connecting metal ring (2-2-2); the surface of the central metal brush connecting metal ring (2-2-4) is provided with a reverse step-shaped central metal brush (2-2-3), and the long brush end of the central metal brush (2-2-3) is contacted with the peripheral metal brush connecting metal ring (2-2-2).

4. A helical blade-amplified arc discharge apparatus as claimed in claim 1, wherein said air vent structure (8) is provided with a plurality of air holes (3), each air hole (3) being inclined in the same direction clockwise or counterclockwise.

5. A helical blade-amplified arc discharge apparatus as claimed in claim 4, wherein said number of said air holes (3) is 3.

6. A helical blade-amplified arc discharge device as claimed in claim 1, wherein the discharge composite chamber (4) is made of insulating material on the outside and conductive material on the inner side wall.

7. The spiral blade-increasing arc discharge device according to claim 1, wherein the blade electrode (5) is formed by attaching a plurality of electrodes, and comprises a front hollow blade electrode (5-1) and a back solid blade electrode (5-2), the blade electrode (5) is provided with a fan-shaped flow guide groove (5-3), and a filler (5-4) is arranged in the fan-shaped flow guide groove (5-3).

8. The helical edge-enhanced arc discharge device as set forth in claim 7, wherein the number of the blade electrodes (5) is 2 or more.

9. A helical blade-amplified arc discharge apparatus as claimed in claim 7, wherein said filler (5-4) is a porous medium body or a composite filler of a porous medium body and a porous catalyst.

10. The spiral blade-amplified arc discharge device according to claim 1, wherein the spiral electrode (6) is made of metal material, and is spirally arranged in the discharge composite chamber (4) in a spiral arrangement with a wide top and a narrow bottom, and the surface of the spiral electrode (6) is provided with a flow guide groove (6-1).

Technical Field

The invention belongs to the field of discharge devices, and particularly relates to a spiral blade-rotating amplification type arc discharge device.

Background

The sliding arc discharge is a discharge form that two electrodes generate an arc channel under the excitation of a high-voltage electric field, and the arc slides downwards along the direction of the airflow driven by the airflow. The discharge arc is driven and cooled by airflow, and can generate atmospheric pressure non-equilibrium plasma with the characteristics of thermal equilibrium plasma and non-equilibrium plasma. Most of electric energy is injected into a discharge area through non-equilibrium plasma in the sliding arc discharge process to generate a large amount of high-energy electrons and active groups, and the high-energy electrons and the chemical groups have high chemical activity, so that the chemical reaction rate can be improved, and the chemical reaction process can be accelerated. Therefore, the atmospheric pressure non-equilibrium plasma generated by the sliding arc discharge has high energy utilization rate and has wide application prospect in the fields of pollutant degradation, fuel reforming, metal surface cleaning, wastewater treatment, plasma ignition, combustion supporting and the like.

At present, sliding arc discharge is mainly of a two-dimensional knife-shaped electrode structure, and the electrode structure is simple and convenient to manufacture. However, the two-dimensional knife-shaped structure sliding arc discharge is mainly formed in the gap between the two blades, the oxidation corrosion of the electrode is easily caused by long-time continuous discharge, the continuity of the discharge propagation is affected, the contact area between the arc and the medium gas is small, the reaction time is short, the conversion efficiency of the reaction gas is difficult to improve, and the application and popularization of the sliding arc plasma in the industry are limited to a certain extent.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a sliding arc discharge device which is efficient, safe and reliable.

The above purpose of the invention is realized by the following technical scheme:

a spiral blade-rotating amplification type arc discharge device comprises a transmission gear, a driving power supply connection module, a discharge composite cavity, a blade electrode, a spiral electrode, a grounding structure and a ventilation structure;

the transmission gear is fixed on the top of the upper end of the blade electrode, the blade electrode is connected with a metal connecting rod, the metal connecting rod penetrates through a hollow part from the axis and is connected with the upper transmission gear, a coaxial driving power supply connecting module is arranged on the lower portion of the transmission gear, the blade electrode is connected with the upper transmission gear and the driving power supply connecting module through the metal connecting rod, the discharging composite cavity is located at the lower end of the driving power supply connecting module, an opening in the axis position penetrates through the metal connecting rod of the blade electrode, the spiral electrode is coiled on the inner side wall of the discharging composite cavity from top to bottom, the upper end and the lower end of the spiral electrode are both connected with the opening in the side wall of the composite cavity in a grounding mode, and a ventilation structure is arranged in the upper position, corresponding to the discharging composite cavity, of gaps between the spiral electrode and the blade electrode.

Furthermore, the power supply connection module adopts a multipoint contact connection design, and the main body is made of conductive metal and is of a hollow cylindrical structure.

Furthermore, the driving power supply connection module comprises a high-voltage connector, a groove, a metal brush and a metal connecting rod, wherein the metal brush comprises a peripheral metal brush, the peripheral metal brush is connected with a metal ring, a central metal brush is connected with the metal ring; the central position of the right upper end of the groove and the central position of the side wall are both provided with holes, the metal connecting rod is vertically inserted from the central hole of the right upper end of the groove, the high-pressure connecting head is inserted from the central hole of the side wall of the groove and is communicated with the peripheral metal brush connecting metal ring, and the peripheral metal brush connecting metal ring is fixed at the central position of the groove; the surface of the peripheral metal brush connecting metal ring is provided with a step-shaped peripheral metal brush, the central metal brush connecting metal ring is connected with and fixed on the metal connecting rod, and the height of the central metal brush connecting metal ring is the same as that of the peripheral metal brush connecting metal ring; the surface of the central metal brush connecting metal ring is provided with a central metal brush in a reverse step shape, and the long brush end of the central metal brush is contacted with the peripheral metal brush connecting metal ring.

Furthermore, the ventilation structure is provided with a plurality of air holes, and each air hole inclines towards the same direction clockwise or anticlockwise.

Further, the number of the air holes is 3.

Furthermore, the outer part of the discharge composite cavity is made of insulating materials, and the inner side wall of the discharge composite cavity is made of conducting materials.

Furthermore, the blade electrode is formed by attaching a plurality of electrodes, and comprises a front hollow blade electrode and a back solid blade electrode, wherein the blade electrode is provided with a fan-shaped flow guide groove, and a filler is arranged in the fan-shaped flow guide groove.

Furthermore, the number of the electrode pieces of the blade electrode is more than or equal to 2.

Further, the filler is a porous medium body or composite filling of the porous medium body and the porous catalyst.

Furthermore, the spiral electrode is made of metal materials, is spirally arranged in the discharge composite cavity and is spirally arranged with the upper part wide and the lower part narrow, and the surface of the spiral electrode is provided with a flow guide groove.

Compared with the prior art, the invention has the beneficial effects that:

(1) low energy consumption, high efficiency, low discharge power and good application and treatment effects;

(2) the blade electrode drives internal gas or aerial fog to be fully mixed with active particles generated by discharge through rotation to enhance the treatment efficiency, and meanwhile, the rotation of the blade electrode is combined with the spiral electrode, compared with the traditional blade electrode, the whole stroke and space distribution of the sliding of the discharge arc are increased under the unit scale, and both the blade electrode and the spiral electrode adopt a flow guide design, so that viscous gas can be concentrated to a blade tip discharge area along a flow guide groove in the gas circulation process, the treatment effect is enhanced, the electrode temperature is reduced, and the bidirectional enhancement of the discharge stroke and the treatment effect is realized;

(3) the stability is high, the controllability is strong, the power supply connection module adopts a multi-point power supply and directional rotation design, and the high-voltage connection and the rotation direction of the blade electrode are ensured; the blade electrode and the spiral electrode adopt a flow guiding design, so that the surface temperature of the electrode is reduced in the flow guiding process, and the durability of the electrode is improved; the side wall of the conductive material in the discharge composite cavity is connected with the spiral electrode, so that the heat dissipation effect is improved; the blade electrode adopts a double-edge or multi-edge design, so that the electrode can still continue to discharge after being strongly corroded; the porous medium body added to the fan-shaped diversion trench in the middle of the blade electrode can be a specific catalytic material or an adsorption material, and is selected according to a treatment object to realize an enhanced treatment effect; gas or aerial fog is injected through the air holes which are spirally arranged above, directional disturbance of air flow is realized, uniform mixing can be realized, and the injection sequence can be adjusted according to the treatment requirement, so that multi-region mixed treatment is realized.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a plan view of the present invention;

FIG. 3 is a front view of a drive supply connection module;

FIG. 4 is a top view of the drive power connection module;

FIG. 5 is a schematic view of a venting portion;

FIG. 6 is a schematic view of a blade electrode;

fig. 7 is a schematic view of a spiral electrode.

In the figure: 1. the device comprises a transmission gear, 2, a driving power supply connection module, 2-1, a groove, 2-2, a metal brush, 2-2-1, a peripheral metal brush, 2-2-2, a peripheral metal brush connection metal ring, 2-2-3, a central metal brush, 2-2-4, a central metal brush connection metal ring, 2-3, a metal connecting rod, 3, an air hole, 4, a discharge composite cavity, 5, a blade electrode, 5-1, a front hollow blade electrode, 5-2, a back solid blade electrode, 5-3, a fan-bone-shaped diversion trench, 5-4, a filler, 6, a spiral electrode, 6-1, a diversion groove, 7, a ground and 8, and a ventilation structure.

Detailed Description

The invention is described in more detail below with reference to specific examples, without limiting the scope of the invention. Unless otherwise specified, the experimental methods adopted by the invention are all conventional methods, and experimental equipment, materials, reagents and the like used in the experimental method can be obtained from commercial sources.

Example 1

As shown in fig. 1-2, the design structure of the present invention mainly comprises a transmission gear 1, a driving power supply connection module 2, and a discharge composite cavity 4 from top to bottom, and a blade electrode 5, a spiral electrode 6, a ground 7, and a ventilation structure 8 are arranged from the inside to the outside of the discharge composite cavity 4. The transmission gear 1 is an external power connector and is fixed at the top of the upper end of the blade electrode 5, and different transmission gears are selected according to the required power and rotating speed; the blade electrode 5 is connected with a metal connecting rod 2-3, penetrates through the shaft center of the hollow part and is connected with the upper transmission gear 1, the central position of the right upper end of the groove 2-1 and the central position of the side wall are both provided with holes, the metal connecting rod 2-3 is vertically inserted through the central hole of the right upper end of the groove 2-1, the high-voltage connector 2-0 is inserted through the central position hole of the side wall of the groove 2-1 and is communicated with the peripheral metal brush connecting metal ring 2-2-2, and the peripheral metal brush connecting metal ring 2-2-2 is fixed at the central position of the groove 2-1; the surface of the peripheral metal brush connecting metal ring 2-2-2 is provided with a step-shaped peripheral metal brush 2-2-1, the central metal brush connecting metal ring 2-2-4 is connected with and fixed on the metal connecting rod 2-3, and the height of the central metal brush connecting metal ring is the same as that of the peripheral metal brush connecting metal ring 2-2-2; the surface of the central metal brush connecting metal ring 2-2-4 is provided with a reverse step-shaped central metal brush 2-2-3, and the long brush end of the central metal brush 2-2-3 is contacted with the peripheral metal brush connecting metal ring 2-2-2.

The metal brush 2-2 is buckled with the part of the clamping teeth of the metal connecting rod 2-3, so that the metal brush 2-2 below can still be normally connected with the electrode for power supply under the condition that the upper end groove 2-1 is poor in connection or the voltage supply is insufficient due to oxidation, and the electrode is prevented from reversing under the condition of misoperation; a coaxial driving power supply connection module 2 is arranged at the lower part of the transmission gear 1, as shown in fig. 3-4, the driving power supply connection module 2 adopts a multipoint contact connection design, and the main body is made of conductive metal and is of a hollow cylindrical structure; the blade electrode 5 is connected with the upper end transmission gear 1 and the driving power supply connection module 2 through metal connecting rods 2-3 to realize rotary driving and power supply driving, as shown in fig. 6, the blade electrode 5 adopts a grooving, multi-edge and airflow guiding design, and viscous airflow flows to the blade tip along the fan-bone-shaped diversion groove 5-3 added with the filler 4-4 while the airflow is driven in the process of rotationally pushing the airflow; the discharge composite cavity 4 is positioned at the lower end of the drive power supply connection module 2 and is integrally in a hollow cylindrical design, an opening at the axis position penetrates through a metal connecting rod 2-3 of the blade electrode 5, the outer part of the discharge composite cavity 4 is made of an insulating material, the inner side wall of the discharge composite cavity is made of a conductive material, the spiral electrode 6 is spirally wound on the inner side wall of the discharge composite cavity 4 from top to bottom, and the upper end and the lower end of the spiral electrode 6 are both connected with the opening of the side wall of the composite cavity 4 through grounding 7 so as to ensure good grounding; as shown in fig. 7, the surface of the spiral electrode 6 is designed by threads, so that the heat dissipation area is increased, and simultaneously, the airflow is guided to the edge position of the cutting edge of the spiral electrode 6 in the flowing process of the gas in the cavity, so as to enhance the regional treatment; the spiral electrode 6, the blade electrode 5 and the reserved space at the upper part of the discharge composite cavity 4 can be added with flow equalization related facilities; the upper position of the gap between the spiral electrode 6 and the blade electrode 5 corresponding to the discharge composite cavity 4 is provided with a plurality of air holes 3, the air holes 3 are arranged along the axis in a circular track and can be arranged in a plurality of spiral ways, and the spiral direction is consistent with the rotation direction of the spiral electrode 6.

Drive power module 2 is conducting material, and this embodiment uses the copper product material, adopts the multiple spot connection design, and annular contact is connected promptly and is turned to with the brush tooth and be connected, sets up directional rotation buckle simultaneously, when guaranteeing that power supply state is stable, ensures that the direction of rotation is unanimous.

As shown in fig. 5, the air vent structure 8 is provided with a plurality of air holes 3, the air holes 3 are spirally arranged along the axis in a zijin flower shape along a circular track, and are consistent with the rotation angle of the lower spiral electrode 6, so that the air tends to have spiral motion along the rotation direction of the electrode, the mixing effect and the electric arc sliding effect are enhanced, the treatment stroke is enhanced, the treatment efficiency is improved, and the position of the air outlet is consistent with that of the two blade electrodes 5; the gap can be independently input from each air hole relative to the gas or the gas fog, so that the ionization and the mixing treatment of regional discharge are realized; the gas or the gas fog can be mixed at the same time and input from each air hole at the same time; the number of the air holes in this embodiment is 3 for example and is not limited to 3.

The outer part and the top of the discharge composite cavity 4 are made of insulating materials, polytetrafluoroethylene is used in the embodiment, the inner side wall of the discharge composite cavity is made of conductive materials and can be made of conductive films or metal, tin foils are used for wall-attached fixation, and the bottom of the discharge composite cavity 4 is designed to be an opening. The whole structure ensures the safety of external insulation, is simultaneously connected with the spiral electrode 6, increases the heat transfer area, improves the heat dissipation efficiency of the electrode, is simultaneously grounded together with the spiral electrode 6, and ensures the stability of the discharge state by multiple measures.

The blade electrode 5 is made of a conductive material, the blade electrode 5 is made of a copper material, the blade electrode 5 is designed to be grooved, multi-edged and airflow-guided, and in the process of rotationally pushing airflow, viscous airflow is driven by the airflow to flow to the blade tip along the guide groove body added with the filler 5-4, and the airflow and the blade tip of the spiral electrode 6 transmit the airflow to push the arc to slide, so that the treatment efficiency is improved. The blade electrode 5 is matched with the spiral electrode 6 in a rotating way and the airflow is guided, so that the electric arc is pushed in a precession way, the stroke of a discharge channel and the discharge area are increased, and the treatment efficiency is improved.

The blade electrode 5 is formed by laminating a plurality of electrodes, the number of the blades is 2, the number of the blades is only limited to 2, the service life of the electrode is prolonged in the discharging process of the multi-blade electrode, the requirements of electrode materials are reduced, the service durability of the electrode is improved, other blades can ensure the continuous discharging under the condition of electrode damage, and the stability of the treatment efficiency and the discharging stability are ensured. The synergistic effect of electrode rotation, adsorption and flow guide can realize sliding arc discharge under the condition of low gas flow velocity injection.

The middle of the blade electrode 5 is designed into a groove which is a fan-bone-shaped pouring groove 5-3 and is provided with a flow guide partition; in the electrode rotation matching process, gas is blocked by the back solid blade electrode 5-2 and flows into the front hollow blade electrode 5-1 along the fan-bone-shaped diversion groove 5-3, namely a discharge treatment area at the front edge of the blade, so that the treatment effect is improved.

The fan-shaped backflow groove 5-3 can be filled with filler 5-4, the filler 5-4 can be a porous medium body, gas or gas mist is adsorbed and treated in the rotating process, meanwhile, electrode discharge and electrode temperature change promote the desorption process of the adsorbent, and the adsorbent is guided to a discharge area along the fan-shaped flow guide groove 5-3 to improve the treatment effect; the filler 5-4 can be a porous catalyst, and the treatment effect is improved under the synergistic effect of the plasma and the catalyst; the filler 5-4 can also be composite filling of a porous medium body and a porous catalyst, wherein the filling main body is the porous medium body, and the blade end is filled with the porous catalyst, so that the adsorption is ensured, and the synergistic effect of the plasma and the catalyst is enhanced. The fillers 5-4 in this embodiment are porous alumina media, and may also be photocatalytic porous materials or chemical catalytic porous materials.

The spiral electrode 6 is made of a conductive material, the spiral electrode is made of a copper material, the electrode configuration is spirally arranged in a wide and narrow manner, the electrode gap change in the rotation process of the spiral electrode and the blade electrode 5 meets the traditional double-blade electrode gap change, the spiral electrode is coiled inside the discharge composite cavity 4 and forms a sliding arc discharge electrode group together with the rotating blade electrode 5, the sliding formation of a discharge arc is increased in a unit vertical space through the spiral coiling of the electrode, the discharge treatment time is prolonged, and the discharge diffusion area is enlarged to improve the treatment effect;

the surface of the spiral electrode 6 is provided with the diversion groove 6-1, the guidance to the blade tip position in the gas internal flowing process is met, the treatment efficiency of gas or aerial fog is improved, the stroke of a discharge channel in unit vertical distance is increased, the diversion groove is matched with the rotating direction of the rotating electrode, the gas is blocked on the surface of the electrode and flows to the point discharge area of the electrode blade along the diversion groove, the treatment effect is improved, meanwhile, the diversion groove increases the surface area of the electrode, under the condition that the electrode rotates for airflow diversion, the heat dissipation effect of the electrode is improved, and the discharge stability is improved.

Example 2

The working process of the invention is as follows:

from top to bottom, the transmission gear 1 and an external transmission device are connected with the movable blade electrode 5 to rotate directionally in the discharge composite cavity 4, the high-voltage connector 2-0 is connected with the driving power supply connection module 2 to connect high voltage to the blade electrode 5, the spiral electrode 6 is spirally wound on the inner side wall of the discharge composite cavity 4, the upper end and the lower end of the discharge composite cavity are both connected with the side wall ground 7 to realize good ground connection, single or multiple gases or gas fog can be injected into a rotary discharge area through the pore canal 3 at the top of the discharge composite cavity 4, active species generated by the sliding electric arc are mainly concentrated in a discharge blade area, the whole discharge stroke is increased under the unit discharge length by the rotation process of the spiral electrode 6, the guide of the airflow to the blade tip and the uniform mixing of the gas and the active ions are realized, the discharge treatment effect is enhanced, the discharge stroke and the processing efficiency are enhanced by the design of the spiral electrode 6 and the blade electrode 5.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.