CN210274654U - Cathode-free plasma generator - Google Patents
Cathode-free plasma generator Download PDFInfo
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- CN210274654U CN210274654U CN201920606134.6U CN201920606134U CN210274654U CN 210274654 U CN210274654 U CN 210274654U CN 201920606134 U CN201920606134 U CN 201920606134U CN 210274654 U CN210274654 U CN 210274654U
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Abstract
The utility model belongs to 3D prints additive manufacturing, metal surface treatment, welding, metal surface restoration field, concretely relates to no negative pole plasma generator, its characterized in that includes: gas ring, negative pole guide pillar, block the medium, working power supply positive pole, working power supply negative pole, gas passage, striking level, shell body, interior casing, radio frequency power supply positive pole, insulating pad, sealing washer, negative pole support and positive pole insulating pad, the utility model discloses utilize dual power supply system, a radio frequency power supply striking, another is working power supply, during operation radio frequency power supply at first with block that the medium forms little dizzy, then working power supply again with block and form plasma arc between the introduction, to the ablation of negative pole when very big reduction arcing like this, block and adopt zonulae occludens between medium and the negative pole, the utility model relates to a no negative pole plasma arc of no negative pole plasma generator directly produce with the negative pole, and the negative pole basically does not have the ablation, very big improvement negative pole life.
Description
Technical Field
The utility model belongs to fields such as 3D printing additive manufacturing, metal surface treatment, welding, metal surface restoration, concretely relates to no negative pole plasma generator.
Background
The traditional plasma generator directly discharges with the anode by using the cathode, and due to the fact that voltage is high, the surface ablation is easily caused to the cathode or the anode due to the extremely high plasma discharging temperature, and the service life of the cathode and the anode is greatly shortened.
For example, the patent number is CN200620013110.2, the name is a plasma generator, and the abstract is a plasma generator, which is composed of a cathode, an anode, a front cavity air inlet ring, a rear cavity air inlet ring, an electric pressure regulating valve, a support sleeve, a housing, a base, a front cavity air inlet, a rear cavity air inlet, a water outlet, an arc striking device and a switching power supply, and is used for directly igniting coal powder in ignition, stable combustion and combustion supporting of a coal-fired boiler. The plasma generator is in a structure form of a fixed-pole-distance coaxial double-air-chamber air compression type, and the power can reach 350KW or even more; the distance between the cathode and the anode of the plasma generator is a fixed value, and the arc striking mode is a high-frequency arc striking mode or an independent loop low-current contact pin arc striking mechanism; the cathode of the plasma generator is designed to be a noble metal alloy composite hollow water-cooling structure, and the electron emission surface is a cylindrical surface; the plasma generator is provided with an air pressure fluctuation device, so that the part of the cathode emitting electrons can be adjusted; the compression design of the plasma is air compression, compressed air enters the plasma generator from the front cavity air inlet ring and the rear cavity air inlet ring in a rotating mode, the plasma is compressed towards the center, the compressed air enters the plasma generator from the rear cavity air inlet ring in a rotating mode, the plasma compressed towards the center is pushed out of the anode and contacts with pulverized coal, and the pulverized coal is ignited.
SUMMERY OF THE UTILITY MODEL
To above-mentioned traditional plasma generator use the negative pole directly to discharge with the positive pole among the prior art, because voltage is higher, plasma discharge temperature high very easily causes the surface ablation to negative pole or positive pole, very big reduction negative pole and anodal life's not enough, the utility model provides a no cathode plasma generator.
A cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring, a cathode guide post, a blocking medium, a working power supply anode, a working power supply cathode, a gas channel, an arc striking stage, an outer shell, an inner shell, a radio frequency power supply anode, an insulating pad, a sealing ring, a cathode support and an anode insulating pad, wherein a circle of outer shell is arranged outside the plasma generator device, a circle of inner shell is arranged inside the outer shell, the cathode support is arranged in the middle of the inner shell and is in contact with the inner shell, the bottom of the cathode support is provided with a circle of gas distribution ring, the cathode guide post is arranged below the cathode support, the arc striking stage is arranged below the cathode guide post, the sealing ring is arranged above the arc striking stage, the insulating pad is arranged inside the sealing ring, the radio frequency power supply anode is arranged outside the arc striking stage, and the anode, the anode insulation pad is characterized in that a working power supply anode is arranged below the anode insulation pad, a gas channel is arranged below the working power supply anode, and a plasma arc nozzle is arranged below the gas channel.
A circle of arc striking stages are arranged below the cathode guide pillar, and the bottom end of the cathode guide pillar is positioned inside the arc striking stages.
The cathode guide post is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage.
The inner part of the inner shell is provided with a water channel for cooling the plasma generator.
The inside of the gas channel is medium gas.
The cathode guide pillar and the cathode support are connected by threads or directly welded together.
The blocking medium is a high-temperature-resistant inorganic material, and the high-temperature-resistant inorganic material comprises: quartz tubes, glass tubes, or carbon tubes.
The medium gas is: hydrogen, argon, nitrogen or air.
The medium gas is: is a mixed gas of hydrogen, argon, nitrogen and air.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
The utility model has the advantages that:
1. the utility model discloses utilize dual power supply system, a radio frequency power supply striking, another is working power supply, and during operation radio frequency power supply at first forms the micro-point with blocking the medium and dizzy, and then working power supply again with block and form plasma arc between the introduction, to the ablation of negative pole when very big reduction arcing like this, blocks to adopt zonulae occludens between medium and the negative pole.
2. The utility model relates to a no negative pole plasma generator's positive pole plasma arc not directly produce with the negative pole, and the negative pole does not basically have the ablation, very big improvement negative pole life-span, improves plasma generator's life to 5 to 10 times to reducible operating power supply voltage reduces the positive pole ablation, increases the positive pole life-span.
3. The utility model discloses the inside of interior casing is provided with and is used for the refrigerated water course of plasma generator, and the design makes plasma generator's operating temperature can rationally control like this, has increased plasma generator's working strength.
4. The utility model discloses the medium that blocks that sets up is high temperature resistant inorganic material, high temperature resistant inorganic material includes: a quartz tube, a glass tube, or a carbon tube, which is advantageous in that the life span of the plasma generator is increased.
5. The utility model discloses the medium gas who adopts at the during operation does: the plasma generator is hydrogen, argon, nitrogen or air or the mixed gas of hydrogen, argon, nitrogen and air, so that the internal oxidation of the plasma generator is reduced, and the service life of the plasma generator is prolonged.
Reference numerals
1. The gas distribution device comprises a gas distribution ring, 2, a cathode guide post, 3, a blocking medium, 4, a working power supply anode, 5, a gas channel, 6, an arc striking stage, 7, an outer shell, 8, an inner shell, 9, a radio frequency power supply anode, 10, an insulating pad, 11, a sealing ring, 12, a cathode support, 13 and an anode insulating pad.
Drawings
FIG. 1 is a block diagram of the present invention;
the specific implementation mode is as follows:
example 1:
a cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring 1, a cathode guide post 2, a blocking medium 3, a working power anode 4, a working power cathode, a gas channel 5, an arc striking stage 6, an outer shell 7, an inner shell 8, a radio frequency power source anode 9, an insulating pad 10, a sealing ring 11, a cathode support 12 and an anode insulating pad 13, wherein the outer part of the plasma generator device is provided with the outer shell 7 in a circle, the inner shell 8 is arranged inside the outer shell 7 in a circle, the cathode support 12 is arranged in the middle of the inner shell 8 and is in contact with the inner shell 8, the bottom of the cathode support 12 is provided with the gas distribution ring 1 in a circle, the cathode guide post 2 is arranged below the cathode support 12, the arc striking stage 6 is arranged below the cathode guide post 2, the sealing ring 11 in a circle is arranged above the arc striking stage 6, the insulating pad 10 is arranged inside the sealing ring 11, an anode insulating pad 13 is arranged below the radio frequency power supply anode 9, a working power supply anode 4 is arranged below the anode insulating pad 13, a gas channel 5 is arranged below the working power supply anode 4, and a plasma arc nozzle is arranged below the gas channel 5.
A circle of arc striking stage 6 is arranged below the cathode guide post 2, and the bottom end of the cathode guide post 2 is positioned inside the arc striking stage 6.
The cathode guide post 2 is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage 6.
The plasma generator adopts a dual-power system, one radio frequency power supply is used for arc striking, the other is a working power supply, the radio frequency power supply firstly forms micro-point corona with the blocking medium during working, and then the working power supply forms plasma arc with the blocking introduction, so that ablation on a cathode during arc striking is greatly reduced, and the blocking medium is tightly connected with the cathode.
The plasma arc of the anode in the plasma generator is not directly generated with the cathode, the cathode is basically not ablated, the service life of the cathode is greatly prolonged, the service life of the plasma generator is prolonged to 5 to 10 times, the working power supply voltage can be reduced, the anode ablation is reduced, and the service life of the anode is prolonged.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
Example 2:
a cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring 1, a cathode guide post 2, a blocking medium 3, a working power anode 4, a working power cathode, a gas channel 5, an arc striking stage 6, an outer shell 7, an inner shell 8, a radio frequency power source anode 9, an insulating pad 10, a sealing ring 11, a cathode support 12 and an anode insulating pad 13, wherein the outer part of the plasma generator device is provided with the outer shell 7 in a circle, the inner shell 8 is arranged inside the outer shell 7 in a circle, the cathode support 12 is arranged in the middle of the inner shell 8 and is in contact with the inner shell 8, the bottom of the cathode support 12 is provided with the gas distribution ring 1 in a circle, the cathode guide post 2 is arranged below the cathode support 12, the arc striking stage 6 is arranged below the cathode guide post 2, the sealing ring 11 in a circle is arranged above the arc striking stage 6, the insulating pad 10 is arranged inside the sealing ring 11, an anode insulating pad 13 is arranged below the radio frequency power supply anode 9, a working power supply anode 4 is arranged below the anode insulating pad 13, a gas channel 5 is arranged below the working power supply anode 4, and a plasma arc nozzle is arranged below the gas channel 5.
A circle of arc striking stage 6 is arranged below the cathode guide post 2, and the bottom end of the cathode guide post 2 is positioned inside the arc striking stage 6.
The cathode guide post 2 is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage 6.
The inside of the gas channel 5 is medium gas.
The cathode guide post 2 and the cathode support 12 are connected by screw threads or directly welded together.
The plasma generator adopts a dual-power system, one radio frequency power supply is used for arc striking, the other is a working power supply, the radio frequency power supply firstly forms micro-point corona with the blocking medium during working, and then the working power supply forms plasma arc with the blocking introduction, so that ablation on a cathode during arc striking is greatly reduced, and the blocking medium is tightly connected with the cathode.
The plasma arc of the anode in the plasma generator is not directly generated with the cathode, the cathode is basically not ablated, the service life of the cathode is greatly prolonged, the service life of the plasma generator is prolonged to 5 to 10 times, the working power supply voltage can be reduced, the anode ablation is reduced, and the service life of the anode is prolonged.
The plasma generator is internally provided with the water channel for cooling the plasma generator, so that the working temperature of the plasma generator can be reasonably controlled, and the working strength of the plasma generator is increased.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
Example 3:
a cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring 1, a cathode guide post 2, a blocking medium 3, a working power anode 4, a working power cathode, a gas channel 5, an arc striking stage 6, an outer shell 7, an inner shell 8, a radio frequency power source anode 9, an insulating pad 10, a sealing ring 11, a cathode support 12 and an anode insulating pad 13, wherein the outer part of the plasma generator device is provided with the outer shell 7 in a circle, the inner shell 8 is arranged inside the outer shell 7 in a circle, the cathode support 12 is arranged in the middle of the inner shell 8 and is in contact with the inner shell 8, the bottom of the cathode support 12 is provided with the gas distribution ring 1 in a circle, the cathode guide post 2 is arranged below the cathode support 12, the arc striking stage 6 is arranged below the cathode guide post 2, the sealing ring 11 in a circle is arranged above the arc striking stage 6, the insulating pad 10 is arranged inside the sealing ring 11, an anode insulating pad 13 is arranged below the radio frequency power supply anode 9, a working power supply anode 4 is arranged below the anode insulating pad 13, a gas channel 5 is arranged below the working power supply anode 4, and a plasma arc nozzle is arranged below the gas channel 5.
A circle of arc striking stage 6 is arranged below the cathode guide post 2, and the bottom end of the cathode guide post 2 is positioned inside the arc striking stage 6.
The cathode guide post 2 is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage 6.
The inside of the inner case 8 is provided with a water passage for cooling the plasma generator.
The inside of the gas channel 5 is medium gas.
The cathode guide post 2 and the cathode support 12 are connected by screw threads or directly welded together.
The plasma generator adopts a dual-power system, one radio frequency power supply is used for arc striking, the other is a working power supply, the radio frequency power supply firstly forms micro-point corona with the blocking medium during working, and then the working power supply forms plasma arc with the blocking introduction, so that ablation on a cathode during arc striking is greatly reduced, and the blocking medium is tightly connected with the cathode.
The plasma arc of the anode in the plasma generator is not directly generated with the cathode, the cathode is basically not ablated, the service life of the cathode is greatly prolonged, the service life of the plasma generator is prolonged to 5 to 10 times, the working power supply voltage can be reduced, the anode ablation is reduced, and the service life of the anode is prolonged.
The plasma generator is internally provided with the water channel for cooling the plasma generator, so that the working temperature of the plasma generator can be reasonably controlled, and the working strength of the plasma generator is increased.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
Example 4:
a cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring 1, a cathode guide post 2, a blocking medium 3, a working power anode 4, a working power cathode, a gas channel 5, an arc striking stage 6, an outer shell 7, an inner shell 8, a radio frequency power source anode 9, an insulating pad 10, a sealing ring 11, a cathode support 12 and an anode insulating pad 13, wherein the outer part of the plasma generator device is provided with the outer shell 7 in a circle, the inner shell 8 is arranged inside the outer shell 7 in a circle, the cathode support 12 is arranged in the middle of the inner shell 8 and is in contact with the inner shell 8, the bottom of the cathode support 12 is provided with the gas distribution ring 1 in a circle, the cathode guide post 2 is arranged below the cathode support 12, the arc striking stage 6 is arranged below the cathode guide post 2, the sealing ring 11 in a circle is arranged above the arc striking stage 6, the insulating pad 10 is arranged inside the sealing ring 11, an anode insulating pad 13 is arranged below the radio frequency power supply anode 9, a working power supply anode 4 is arranged below the anode insulating pad 13, a gas channel 5 is arranged below the working power supply anode 4, and a plasma arc nozzle is arranged below the gas channel 5.
A circle of arc striking stage 6 is arranged below the cathode guide post 2, and the bottom end of the cathode guide post 2 is positioned inside the arc striking stage 6.
The cathode guide post 2 is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage 6.
The inside of the inner case 8 is provided with a water passage for cooling the plasma generator.
The inside of the gas channel 5 is medium gas.
The cathode guide post 2 and the cathode support 12 are connected by screw threads or directly welded together.
The blocking medium 3 is made of a high-temperature-resistant inorganic material, and the high-temperature-resistant inorganic material comprises: quartz tubes, glass tubes, or carbon tubes.
The plasma generator adopts a dual-power system, one radio frequency power supply is used for arc striking, the other is a working power supply, the radio frequency power supply firstly forms micro-point corona with the blocking medium during working, and then the working power supply forms plasma arc with the blocking introduction, so that ablation on a cathode during arc striking is greatly reduced, and the blocking medium is tightly connected with the cathode.
The plasma arc of the anode in the plasma generator is not directly generated with the cathode, the cathode is basically not ablated, the service life of the cathode is greatly prolonged, the service life of the plasma generator is prolonged to 5 to 10 times, the working power supply voltage can be reduced, the anode ablation is reduced, and the service life of the anode is prolonged.
The plasma generator is internally provided with the water channel for cooling the plasma generator, so that the working temperature of the plasma generator can be reasonably controlled, and the working strength of the plasma generator is increased.
This plasma generator's the medium that blocks is high temperature resistant inorganic material, high temperature resistant inorganic material includes: a quartz tube, a glass tube, or a carbon tube, which is advantageous in that the life span of the plasma generator is increased.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
Example 5:
a cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring 1, a cathode guide post 2, a blocking medium 3, a working power anode 4, a working power cathode, a gas channel 5, an arc striking stage 6, an outer shell 7, an inner shell 8, a radio frequency power source anode 9, an insulating pad 10, a sealing ring 11, a cathode support 12 and an anode insulating pad 13, wherein the outer part of the plasma generator device is provided with the outer shell 7 in a circle, the inner shell 8 is arranged inside the outer shell 7 in a circle, the cathode support 12 is arranged in the middle of the inner shell 8 and is in contact with the inner shell 8, the bottom of the cathode support 12 is provided with the gas distribution ring 1 in a circle, the cathode guide post 2 is arranged below the cathode support 12, the arc striking stage 6 is arranged below the cathode guide post 2, the sealing ring 11 in a circle is arranged above the arc striking stage 6, the insulating pad 10 is arranged inside the sealing ring 11, an anode insulating pad 13 is arranged below the radio frequency power supply anode 9, a working power supply anode 4 is arranged below the anode insulating pad 13, a gas channel 5 is arranged below the working power supply anode 4, and a plasma arc nozzle is arranged below the gas channel 5.
A circle of arc striking stage 6 is arranged below the cathode guide post 2, and the bottom end of the cathode guide post 2 is positioned inside the arc striking stage 6.
The cathode guide post 2 is connected with the cathode of the working power supply.
The radio frequency power supply is connected with the arc striking stage 6.
The inside of the inner case 8 is provided with a water passage for cooling the plasma generator.
The inside of the gas channel 5 is medium gas.
The cathode guide post 2 and the cathode support 12 are connected by screw threads or directly welded together.
The blocking medium 3 is made of a high-temperature-resistant inorganic material, and the high-temperature-resistant inorganic material comprises: quartz tubes, glass tubes, or carbon tubes.
The medium gas is: hydrogen, argon, nitrogen or air.
The medium gas is: is a mixed gas of hydrogen, argon, nitrogen and air.
The plasma generator adopts a dual-power system, one radio frequency power supply is used for arc striking, the other is a working power supply, the radio frequency power supply firstly forms micro-point corona with the blocking medium during working, and then the working power supply forms plasma arc with the blocking introduction, so that ablation on a cathode during arc striking is greatly reduced, and the blocking medium is tightly connected with the cathode.
The plasma arc of the anode in the plasma generator is not directly generated with the cathode, the cathode is basically not ablated, the service life of the cathode is greatly prolonged, the service life of the plasma generator is prolonged to 5 to 10 times, the working power supply voltage can be reduced, the anode ablation is reduced, and the service life of the anode is prolonged.
The plasma generator is internally provided with the water channel for cooling the plasma generator, so that the working temperature of the plasma generator can be reasonably controlled, and the working strength of the plasma generator is increased.
This plasma generator's the medium that blocks is high temperature resistant inorganic material, high temperature resistant inorganic material includes: a quartz tube, a glass tube, or a carbon tube, which is advantageous in that the life span of the plasma generator is increased.
The plasma generator adopts the following medium gases during working: the plasma generator is hydrogen, argon, nitrogen or air or the mixed gas of hydrogen, argon, nitrogen and air, so that the internal oxidation of the plasma generator is reduced, and the service life of the plasma generator is prolonged.
The working principle is as follows:
the medium gas is introduced into the gap between the blocking medium and the arc striking stage from the cathode support and is sprayed out from the anode nozzle, and the medium gas can be hydrogen, argon, nitrogen, air or the mixture of the hydrogen, the argon, the nitrogen and the air.
During operation, the anode radio frequency power supply and the barrier medium discharge to form corona on the surface of the barrier medium, plasma arc is formed between the corona and the anode of the working power supply, the plasma arc is blown out from the anode nozzle through the medium gas to form plasma arc serving as a heat source, and the temperature can reach 20000 degrees.
Claims (10)
1. A cathode-less plasma generator, characterized by comprising: the plasma generator device comprises a gas distribution ring (1), a cathode guide post (2), a blocking medium (3), a working power anode (4), a working power cathode, a gas channel (5), an arc striking stage (6), an outer shell (7), an inner shell (8), a radio frequency power supply anode (9), an insulating pad (10), a sealing ring (11), a cathode support (12) and an anode insulating pad (13), wherein a circle of the outer shell (7) is arranged outside the plasma generator device, a circle of the inner shell (8) is arranged inside the outer shell (7), the cathode support (12) is arranged in the middle of the inner shell (8) and is in contact with the inner shell (8), the gas distribution ring (1) is arranged at the bottom of the cathode support (12), the cathode guide post (2) is arranged below the cathode support (12), the arc striking stage (6) is arranged below the cathode guide post (2), the arc starting device is characterized in that a circle of sealing ring (11) is arranged above the arc starting level (6), an insulating pad (10) is arranged inside the sealing ring (11), a circle of radio-frequency power supply anode (9) is arranged outside the arc starting level (6), an anode insulating pad (13) is arranged below the radio-frequency power supply anode (9), a working power supply anode (4) is arranged below the anode insulating pad (13), a gas channel (5) is arranged below the working power supply anode (4), and a plasma arc nozzle is arranged below the gas channel (5).
2. The cathodal plasma generator according to claim 1, wherein: a circle of arc striking stage (6) is arranged below the cathode guide post (2), and the bottom end of the cathode guide post (2) is positioned inside the arc striking stage (6).
3. The cathodal plasma generator according to claim 1, wherein: the cathode guide post (2) is connected with the cathode of the working power supply.
4. The cathodal plasma generator according to claim 1, wherein: the radio frequency power supply is connected with the arc striking stage (6).
5. The cathodal plasma generator according to claim 1, wherein: the inner part of the inner shell (8) is provided with a water channel for cooling the plasma generator.
6. The cathodal plasma generator according to claim 1, wherein: the inside of the gas channel (5) is medium gas.
7. The cathodal plasma generator according to claim 1, wherein: the cathode guide post (2) and the cathode support (12) are connected by threads or directly welded together.
8. The cathodal plasma generator according to claim 1, wherein: the blocking medium (3) is made of a high-temperature-resistant inorganic material, and the high-temperature-resistant inorganic material comprises: quartz tubes, glass tubes, or carbon tubes.
9. The cathodal plasma generator according to claim 6, characterized in that the dielectric gas is: hydrogen, argon, nitrogen or air.
10. The cathodal plasma generator according to claim 6, characterized in that the dielectric gas is: is a mixed gas of hydrogen, argon, nitrogen and air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920606134.6U CN210274654U (en) | 2019-04-29 | 2019-04-29 | Cathode-free plasma generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920606134.6U CN210274654U (en) | 2019-04-29 | 2019-04-29 | Cathode-free plasma generator |
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| CN210274654U true CN210274654U (en) | 2020-04-07 |
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| CN201920606134.6U Active CN210274654U (en) | 2019-04-29 | 2019-04-29 | Cathode-free plasma generator |
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