CN216960287U - Air-cooled plasma generator and anode electrode thereof - Google Patents
Air-cooled plasma generator and anode electrode thereof Download PDFInfo
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- CN216960287U CN216960287U CN202220700242.1U CN202220700242U CN216960287U CN 216960287 U CN216960287 U CN 216960287U CN 202220700242 U CN202220700242 U CN 202220700242U CN 216960287 U CN216960287 U CN 216960287U
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Abstract
The utility model relates to the technical field of plasma generators, in particular to an air-cooled plasma generator and an anode electrode thereof, which comprise an anode main body and a backflow cover, wherein the backflow cover is arranged at the front end of the anode main body; the cross section of the anode main body is an annular surface and is provided with a central arc channel and a plurality of cooling cavities distributed along the circumference of the central arc channel, the cavity inner space of each cooling cavity forms an air inlet channel, and a backflow channel is formed between the peripheral space of each cooling cavity and the backflow cover. The utility model adopts the gas cooling mode of gas reflux to carry out cooling, can avoid the cooling liquid from participating in the reaction during liquid cooling, has more simplified structure compared with the liquid cooling, and has strong practicability, long service life, high safety and wider application range.
Description
Technical Field
The utility model relates to the technical field of plasma generators, in particular to an air-cooled plasma generator and an anode electrode thereof.
Background
The arc plasma is widely applied to the fields of arc plasma ignition, plasma cutting processing, plasma spraying and the like of a pulverized coal boiler at present, the traditional plasma electrode has high working temperature, the low-power and intermittent cutting and welding plasma can adopt air cooling, the high-power plasma electrode needs to use liquid cooling for long-term working, but cooling liquid in the liquid cooling mode easily participates in reaction, and a plasma generator can consume a part of power supply power due to certain magnetic hysteresis of the cooling liquid in a cooling device, so that the efficiency of the plasma generator is reduced. The existing gas-cooled plasma anode electrode for low-power cutting and welding has the problems of unreasonable cooling structure and poor heat dissipation effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air-cooled plasma generator and an anode electrode thereof, which are used for optimizing the gas path structure of an anode section of the plasma generator so as to overcome the defects in the prior art.
The embodiment of the utility model is realized by the following technical scheme: an anode electrode of an air-cooled plasma generator includes an anode body and a backflow cover mounted at a front end of the anode body;
the cross section of the anode main body is an annular surface and is provided with a central arc channel and a plurality of cooling cavities distributed along the circumference of the central arc channel, the cavity inner space of each cooling cavity forms an air inlet channel, and a backflow channel is formed between the peripheral space of each cooling cavity and the backflow cover.
According to a preferred embodiment, the gas inlet channels are distributed axially along the annular face of the anode body and lead from the return channel to the opposite direction of the plasma jet.
According to a preferred embodiment, the cooling chamber has a decreasing aperture from the inlet channel to the return channel.
According to a preferred embodiment, the central arc passage is composed of a working gas inlet, a compression passage and a nozzle which are connected in sequence, and the inner diameter of the central arc passage from the working gas inlet to the nozzle is in a state of changing from decreasing to increasing.
According to a preferred embodiment, the anode body is screwed to the return cap.
According to a preferred embodiment, the anode body is made of a material with high electrical and thermal conductivity.
According to a preferred embodiment, the anode body is made of red copper.
According to a preferred embodiment, the backflow cover is made of a high-temperature-resistant and oxidation-resistant material.
According to a preferred embodiment, the material of the backflow cover is 310S stainless steel.
The utility model also provides a gas-cooled plasma generator which comprises the anode electrode.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects: (1) the cooling is carried out by adopting a gas cooling mode of gas reflux, so that the cooling liquid can be prevented from participating in the reaction when the liquid is cooled; (2) through optimizing the anode cooling structure, a plurality of cooling cavities are formed, so that the heat dissipation area is increased, and the heat dissipation efficiency and the heat dissipation effect are improved; (3) compared with a liquid cooling structure, the liquid cooling structure is simplified, and the liquid cooling structure is high in practicability, long in service life, high in safety and wide in application range.
Drawings
Fig. 1 is a schematic structural diagram of an anode electrode provided in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a cross section of an anode body provided in example 1 of the present invention;
icon: 1-anode body, 2-reflux cover, 3-central arc channel, 301-working gas inlet, 302-compression channel, 303-nozzle, 4-cooling cavity, 401-gas inlet channel, 402-reflux channel, 403-cooling 1 cooling gas inlet, 5-swirling working gas, 6-cooling gas, 7-plasma jet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The research of the applicant finds that the traditional plasma electrode has high working temperature, the high-power plasma electrode needs to use liquid cooling in long-term work except that the low-power plasma for cutting and welding in discontinuous work can be cooled by air, but the cooling liquid in the liquid cooling mode easily participates in the reaction, and the plasma generator consumes a part of power supply power and reduces the efficiency of the plasma generator because the cooling liquid in the cooling device has certain magnetic hysteresis. The existing gas-cooled plasma anode electrode for low-power cutting and welding has the problems of unreasonable cooling structure and poor heat dissipation effect.
Therefore, the embodiment of the utility model provides an air-cooled plasma generator and an anode electrode thereof, which are used for optimizing the gas path structure of an anode section of the plasma generator so as to overcome the defects in the prior art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an anode electrode provided in embodiment 1 of the present invention.
An anode electrode of an air-cooled plasma generator comprises an anode body 1 and a backflow cover 2, wherein the backflow cover 2 is arranged at the front end of the anode body 1; the anode body 1 has an annular cross section and has a central arc channel 3 and a plurality of cooling cavities 4 distributed along the circumference of the central arc channel 3. referring to fig. 2, fig. 2 shows the anode body 1 having an annular cross section.
The inner space of the cooling cavity 4 forms an air inlet channel 401, and a return channel 402 is formed between the peripheral space of the cooling cavity 4 and the return cover 2. Further, the gas inlet channels 401 are axially distributed along the annular surface of the anode body 1 and are conducted by the return channel 402 to the opposite direction of the plasma jet 7. In the actual cooling process, the cooling gas 6 enters the cooling gas inlet 403 of the cooling gas 1 and then reaches the backflow channel 402 along the gas inlet channel 401, and the backflow channel 402 enables the flow direction of the cooling gas 6 to be opposite to the direction of the plasma jet 7 and finally reversely flows out of the generator, so that the cooling gas 6 is prevented from affecting the plasma jet 7. It should be noted that, when the cooling cavity 4 is operated, a sufficient amount of air needs to be maintained to take away a large amount of heat through the cooling cavity 4, so as to prevent the anode from melting under the burning of the high-temperature arc, and prolong the service life of the anode.
Further, the aperture of the cooling cavity 4 from the air inlet channel 401 to the return channel 402 is gradually reduced, and by the structure, the flow speed of the cooling gas 6 can be effectively increased after entering, so that the heat dissipation effect is improved.
Further, the central arc passage 3 is composed of a working gas inlet 301, a compression passage 302 and a nozzle 303 which are connected in sequence, and the inner diameter of the central arc passage 3 from the working gas inlet 301 to the nozzle 303 is in a changing state of decreasing first and then increasing. When the arc-forming swirling working gas 5 enters the working gas inlet 301 and is effectively compressed in the compression passage 302 and then enters the expanded nozzle 303, the arc is effectively amplified and directly ejected from the nozzle 303 to form the plasma jet 7. It should be noted that, by the design that the inner diameter of the central arc channel 3 from the working gas inlet 301 to the nozzle 303 is changed in a state of decreasing first and then increasing, the structure is beneficial to arc divergence, and the service life of the anode can be effectively prolonged.
The anode body 1 is in threaded connection with the reflux cover 2. The anode body 1 is made of red copper with high electric conductivity and high thermal conductivity; the backflow cover 2 is made of high-temperature-resistant and oxidation-resistant 310S stainless steel.
The embodiment of the utility model also provides an air-cooled plasma generator which comprises the anode electrode.
In summary, the technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: (1) the cooling is carried out in an air cooling mode, so that the cooling liquid can be prevented from participating in the reaction when the liquid is cooled; (2) through optimizing the anode cooling structure, a plurality of cooling cavities are formed, so that the heat dissipation area is increased, and the heat dissipation efficiency and the heat dissipation effect are improved; (3) compared with a liquid cooling structure, the liquid cooling structure is simplified, and the liquid cooling structure is high in practicability, long in service life, high in safety and wide in application range.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The anode electrode of the air-cooled plasma generator is characterized by comprising an anode main body (1) and a backflow cover (2), wherein the backflow cover (2) is arranged at the front end of the anode main body (1);
the cross section of the anode main body (1) is an annular surface and is provided with a central arc channel (3) and a plurality of cooling cavities (4) distributed along the circumference of the central arc channel (3), the cavity inner space of each cooling cavity (4) forms an air inlet channel (401), and a backflow channel (402) is formed between the peripheral space of each cooling cavity (4) and the backflow cover (2).
2. The air-cooled plasma generator anode electrode according to claim 1, characterized in that the air inlet channels (401) are distributed axially along the annular surface of the anode body (1) and are conducted by the return channel (402) to the opposite direction of the plasma jet (7).
3. The air-cooled plasma generator anode electrode according to claim 1, wherein the diameter of the cooling chamber (4) is gradually reduced from the inlet passage (401) to the return passage (402).
4. The gas-cooled plasma generator anode electrode according to claim 1, wherein the central arc passage (3) is composed of a working gas inlet (301), a compression passage (302), and a nozzle (303) which are connected in sequence, and the inner diameter of the central arc passage (3) from the working gas inlet (301) to the nozzle (303) is changed in a state of decreasing first and then increasing.
5. The air-cooled plasma generator anode electrode according to claim 1, wherein the anode body (1) is screwed with the return cover (2).
6. The anode electrode for air-cooled plasma generator according to any of claims 1 to 5, wherein the anode body (1) is made of material with high electrical and thermal conductivity.
7. The anode electrode for the air-cooled plasma generator according to claim 6, wherein the anode body (1) is made of red copper.
8. The anode electrode of the air-cooled plasma generator according to any of claims 1 to 5, wherein the return cover (2) is made of a material resistant to high temperature and oxidation.
9. The anode electrode of the air-cooled plasma generator according to claim 8, wherein the material of the return cover (2) is 310S stainless steel.
10. An air-cooled plasma generator comprising the anode electrode according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220700242.1U CN216960287U (en) | 2022-03-28 | 2022-03-28 | Air-cooled plasma generator and anode electrode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220700242.1U CN216960287U (en) | 2022-03-28 | 2022-03-28 | Air-cooled plasma generator and anode electrode thereof |
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| Publication Number | Publication Date |
|---|---|
| CN216960287U true CN216960287U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220700242.1U Active CN216960287U (en) | 2022-03-28 | 2022-03-28 | Air-cooled plasma generator and anode electrode thereof |
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| CN (1) | CN216960287U (en) |
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2022
- 2022-03-28 CN CN202220700242.1U patent/CN216960287U/en active Active
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