CN112996210A - Plasma torch with multiple arc channels - Google Patents
Plasma torch with multiple arc channels Download PDFInfo
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- CN112996210A CN112996210A CN202110171723.8A CN202110171723A CN112996210A CN 112996210 A CN112996210 A CN 112996210A CN 202110171723 A CN202110171723 A CN 202110171723A CN 112996210 A CN112996210 A CN 112996210A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
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Abstract
The invention discloses a plasma torch with multiple arc channels, which comprises a cylindrical anode cooling assembly, wherein an anode electrode provided with multiple arc channels is sleeved in the anode cooling assembly, one end of the anode electrode is supported and connected with an insulating pipe, the insulating pipe is positioned in the anode cooling assembly and forms an airflow channel with the anode cooling assembly, the inner wall of the insulating pipe is sleeved with a cathode cooling assembly, the end part of the cathode cooling assembly is opposite to each arc channel of the anode electrode and is connected with a cathode electrode, the anode electrode is connected with an anode binding post, and the multiple cathode electrodes are connected with the cathode binding post; a plurality of cathode electrodes are designed in the plasma torch, a plurality of anode electrodes of arc channels are correspondingly designed at the same time, a structure with a plurality of arc channels is formed, and in the operation process, the plurality of arc channels simultaneously generate arc discharge to generate plasma arcs; the plasma structure with multiple arc channels forms multiple high-temperature regions, so that the high-temperature area is increased.
Description
Technical Field
The invention belongs to the technical field of plasma torches, and particularly relates to a plasma torch with multiple arc channels.
Background
The existing thermal plasma torch generally adopts a mode of generating plasma by arc striking in a single arc channel, namely, the plasma torch is provided with a cathode and an anode, a certain gap is arranged between the cathode and the anode, plasma is generated in the single arc channel by arc striking discharge of the cathode and the anode with potential difference, and then high-density plasma is blown out by external airflow to generate high temperature. The technology is widely applied to the industrial fields of cutting, welding, spraying, metallurgy, materials, chemical industry, waste treatment and the like.
In the practical application of the existing single-arc channel plasma torch, the current must be increased to realize high power, and under the working condition of high current and high power, an electrode (particularly a cathode electrode) is easy to be ablated, so that the service life of the electrode is shortened, the plasma torch cannot work normally, the electrode needs to be replaced frequently, and the plasma torch is very inconvenient to use. Meanwhile, the area of a high-temperature region of the plasma generated by the single-arc-channel plasma torch is small, and when a large-area high-temperature region is needed in some fields, uniform heating is difficult to achieve simultaneously.
Disclosure of Invention
The invention aims to provide a plasma torch with multiple arc channels, which solves the problems that an electrode is easy to ablate and needs to be frequently replaced and a formed high-temperature area is small in area in the single-channel thermal plasma torch technology.
The technical scheme adopted by the invention is that the plasma torch with the multiple arc channels comprises a cylindrical anode cooling assembly, an anode electrode provided with the multiple arc channels is sleeved in the anode cooling assembly, one end of the anode electrode is supported and connected with an insulating tube, the insulating tube is positioned in the anode cooling assembly and forms an airflow channel with the anode cooling assembly, the inner wall of the insulating tube is sleeved with a cathode cooling assembly, the end part of the cathode cooling assembly is opposite to the position of each anode electrode arc channel and is connected with a cathode electrode, the anode electrode is connected with an anode binding post, and the multiple cathode electrodes are connected with the cathode binding post.
The anode cooling assembly comprises an outer side coating pipe, an anode water outlet pipe and an anode water inlet pipe are sequentially and coaxially sleeved in the outer side coating pipe, an anode water inlet channel is formed between the anode water outlet pipe and the anode water inlet pipe, an anode water outlet channel is formed between the outer side coating pipe and the anode water outlet pipe, the anode water inlet channel is communicated with one end, away from a water inlet, of the anode water outlet channel, an anode electrode of a plurality of electric arc channels is arranged on the inner wall of one end of the anode water inlet pipe in a fixed connection mode, and an airflow channel is formed.
The anode electrode is supported and connected with the insulating tube through a rigid supporting structure provided with a spiral air hole.
The cathode cooling assembly comprises a cathode water inlet pipe nested on the inner wall of the insulating pipe, a cathode water outlet pipe is coaxially sleeved outside the cathode water inlet pipe, a cathode water outlet channel is formed between the cathode water inlet pipe and the cathode water outlet pipe, one end of the cathode water outlet pipe is opposite to each anode electrode arc channel and is connected with a cathode electrode, and the cathode water inlet pipe is communicated with one end of the cathode water outlet channel close to the cathode electrode.
The cathode electrodes are connected with a multi-joint cathode conducting seat which is connected with a cathode binding post.
The invention has the beneficial effects that:
a plurality of cathode electrodes are designed in the plasma torch, a plurality of arc channels are correspondingly designed at the same time, a structure with a plurality of arc channels is formed, and in the operation process, the plurality of arc channels simultaneously perform arc striking discharge to generate plasma arcs. Under the condition that the voltage is not changed, the multi-joint cathode conducting seat is adopted, so that a plurality of cathode electrodes are considered to be connected in parallel, the current and the power born by a single cathode electrode are equally divided, and the total power of the plasma torch is not changed. This configuration increases the life of the electrode and reduces the frequency of electrode replacement operations during torch use. Meanwhile, the plasma structure with multiple arc channels forms multiple high-temperature regions, so that the high-temperature area is increased.
Drawings
FIG. 1 is a schematic axial view, partially in cross-section, of a multi-arc channel plasma torch of the present invention;
FIG. 2 is a schematic cross-sectional view of the inside of a multi-arc channel plasma torch of the present invention;
FIG. 3 is a schematic of the anode electrode of a multiple arc channel plasma torch of the present invention;
FIG. 4 is a schematic view of the anode electrode and anode assembly of a multiple arc channel plasma torch of the present invention;
FIG. 5 is a schematic view of a cathode electrode and cathode cooling assembly of a multiple arc channel plasma torch of the present invention;
FIG. 6 is a schematic view of the connection of a multi-arc channel plasma torch cathode electrode to a multi-contact cathode mount in accordance with the present invention;
fig. 7 is a schematic circuit diagram of a multiple arc channel plasma torch of the present invention;
FIG. 8 is a cooling water flow schematic of a multiple arc channel plasma torch of the present invention;
FIG. 9 is a schematic gas flow diagram of a multiple arc channel plasma torch of the present invention;
FIG. 10 is a schematic inner cross-sectional view of an arc channel of a multiple arc channel plasma torch of the present invention;
FIG. 11 is a schematic of the hot zone of a single arc channel plasma torch configuration;
fig. 12 is a schematic of the hot zone of a multiple arc channel plasma torch configuration of the present invention.
In the figure, 1, an anode electrode, 2, an anode cooling assembly, 3, an insulating tube, 4, a cathode cooling assembly, 5, a cathode electrode, 6, an anode binding post, 7, a cathode binding post, 8, a cathode water inlet pipe, 9, a cathode water outlet pipe, 10, a multi-joint cathode conductive seat, 11, an anode water inlet pipe, 12, an anode water outlet pipe and 13, an outer cladding tube.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a plasma torch with multiple arc channels, as shown in figures 1 and 2, which comprises a cylindrical anode cooling component 2, wherein an anode electrode 1 with multiple arc channels is sleeved in the anode cooling component 2, as shown in figure 3, the anode cooling component 2 can cool the anode electrode 1, one end of the anode electrode 1 is supported and connected with an insulating tube 3 through a rigid supporting structure with a spiral air hole, so that air can circulate, the insulating tube 3 is positioned in the anode cooling component 2 and forms an air flow channel with the anode cooling component 2, the inner wall of the insulating tube 3 is sleeved with a cathode cooling component 4, the cathode cooling component 4 can cool a cathode, the end part of the cathode cooling component 4 is opposite to each arc channel of the anode electrode 1 and is connected with a cathode electrode 5, plasma is formed between each cathode electrode 5 and the anode electrode 1 at the corresponding position in the arc channel, the anode electrode 1 is connected with an anode binding post 6, the anode electrode 1 is connected to a power source through an anode terminal 6, the plurality of cathode electrodes 5 are connected to a cathode terminal 7, and the cathode electrodes 5 are connected to the power source through the cathode terminal 7.
As shown in fig. 4, the anode cooling assembly 2 includes an outer cladding pipe 13, an anode water outlet pipe 12 and an anode water inlet pipe 11 are sequentially and coaxially sleeved in the outer cladding pipe 13, an anode water inlet passage is formed between the anode water outlet pipe 12 and the anode water inlet pipe 11, an anode water outlet passage is formed between the outer cladding pipe 13 and the anode water outlet pipe 12, the anode water inlet passage is communicated with one end of the anode water outlet passage far away from the water inlet, an anode electrode 1 with a plurality of arc passages is arranged on one end of the anode water inlet pipe 11 in a fixed connection mode, and an airflow passage is formed between the other end of the anode water inlet pipe.
As shown in fig. 5, the cathode cooling assembly 4 includes a cathode water inlet pipe 8 nested on the inner wall of the insulating pipe 3, a cathode water outlet pipe 9 is coaxially sleeved outside the cathode water inlet pipe 8, a cathode water outlet channel is formed between the cathode water inlet pipe 8 and the cathode water outlet pipe 9, one end of the cathode water outlet pipe 9 is connected to a cathode electrode 5 at a position facing the arc channel of each anode electrode 1, and the cathode water inlet pipe 8 is communicated with the cathode water outlet channel at one end close to the cathode electrode 5.
As shown in fig. 6, the plurality of cathode electrodes 5 are connected to one multi-terminal cathode conductive base 10, and the multi-terminal cathode conductive base 10 is connected to the cathode terminal 7, so that the plurality of cathode electrodes 5 can be connected in parallel as shown in fig. 7.
The invention relates to a multi-arc-channel plasma torch, which adopts the use principle of a controller as follows:
after the cathode terminals 7 and the anode terminals 6 are powered on, a plurality of anode electrodes 1 and corresponding cathode electrodes 5 form a parallel structure, and an equivalent circuit is shown in fig. 7.
After the cathode wiring terminal 7 and the anode wiring terminal 6 are powered on, cold water is continuously introduced into the cathode water inlet pipe 8 (the channel shown in the fourth step), discharged through the cathode water outlet channel (the channel fifth step), the cathode electrode 5 is cooled, cold water is introduced into the anode water inlet channel (the channel) and discharged through the anode water outlet channel (the channel third step), and the anode electrode 1 is cooled, wherein the water flow direction is shown in the figure 8.
The direction of the gas flow is shown in fig. 9, the gas flow enters the gas flow channel through the gas inlet channel, then is supported by the rigid support structure provided with the cyclone holes to generate cyclone gas, the gas is ionized by the anode electrode 1 and the cathode electrode 5 to generate electric arc, the gas passes through the electric arc channel, then is electrolyzed to generate high-energy plasma, and the plasma arc is sprayed out from the electric arc channel, as shown in fig. 10.
The power of the single arc channel plasma torch is P ═ UI, and under the condition that the structure of the plasma torch is determined, the voltage U is a fixed value, and if high power is to be generated, the current needs to be increased, but under the working condition of high current, a single electrode (especially a cathode electrode) is easy to be ablated, so that the service life of the cathode electrode is shortened, the plasma torch cannot work normally, the cathode electrode needs to be replaced frequently, and the plasma torch is very inconvenient in use. Meanwhile, when the area of the high temperature region of the plasma generated by the single arc channel plasma torch is small, as shown in fig. 11, it is difficult to achieve the purpose when a large high temperature region is required in some fields.
According to the plasma torch structure with multiple arc channels, the arc channels are added on the anode electrode, meanwhile, the cathode electrodes with the same number are correspondingly added, and the plasma torch structure is coaxially and correspondingly installed one by one. Under the condition of determining the size of the plasma torch with multiple arc channels, the voltage U is a fixed value, the input current I passes through a parallel circuit of n arc channels, and the current of a single arc channel is
Total power of
Referring to the circuit schematic of fig. 7. Compared with the single-arc-channel plasma structure, the multi-arc-channel plasma torch structure has the advantages that under the same power requirement, the current and the power borne by the cathode electrode of the multi-arc-channel plasma torch structure are equally divided, the service life of the cathode electrode is prolonged, and the problem that the cathode electrode needs to be frequently replaced due to burning is solved. Meanwhile, due to the fact that a plurality of arc channels are arranged, a plurality of high-temperature regions can be generated, and as shown in fig. 12, the high-temperature area is increased.
Through the mode, the plasma torch with the multiple arc channels is provided with the multiple cathode electrodes, the multiple anode electrodes with the multiple arc channels are correspondingly designed, a structure with the multiple arc channels is formed, and the multiple arc channels are simultaneously ignited to discharge to generate plasma arcs in the operation process. Under the condition that the voltage is not changed, the multi-joint cathode conducting seat is adopted, so that a plurality of cathode electrodes are considered to be connected in parallel, the current and the power born by a single cathode electrode are equally divided, and the total power of the plasma torch is not changed. This configuration increases the life of the electrode and reduces the frequency of electrode replacement operations during torch use. Meanwhile, the plasma structure with multiple arc channels forms multiple high-temperature regions, so that the high-temperature area is increased.
Claims (5)
1. The plasma torch with the multiple arc channels is characterized by comprising a cylindrical anode cooling assembly (2), wherein an anode electrode (1) with multiple arc channels is sleeved in the anode cooling assembly (2), an insulating tube (3) is supported and connected at one end of the anode electrode (1), the insulating tube (3) is located in the anode cooling assembly (2) and forms an airflow channel with the anode cooling assembly (2), a cathode cooling assembly (4) is sleeved on the inner wall of the insulating tube (3), the end part of the cathode cooling assembly (4) is just connected with a cathode electrode (5) at the position of each arc channel of the anode electrode (1), the anode electrode (1) is connected with an anode terminal (6), and the cathode electrodes (5) are connected with cathode terminals (7).
2. The plasma torch with multiple arc channels according to claim 1, wherein the anode cooling assembly (2) comprises an outer cladding tube (13), an anode water outlet tube (12) and an anode water inlet tube (11) are sequentially and coaxially sleeved in the outer cladding tube (13), an anode water inlet channel is formed between the anode water outlet tube (12) and the anode water inlet tube (11), an anode water outlet channel is formed between the outer cladding tube (13) and the anode water outlet tube (12), the anode water inlet channel is communicated with one end of the anode water outlet channel, which is far away from a water inlet, an inner wall of one end of the anode water inlet tube (11) is fixedly connected with an anode electrode (1) provided with multiple arc channels, and an inner wall of the other end of the anode water inlet tube (11) and the insulating tube (3) form an airflow channel.
3. The torch according to claim 1, wherein said anode electrode (1) is supported and connected to the insulating tube (3) by a rigid support structure provided with gas holes.
4. The plasma torch as claimed in claim 1, wherein the cathode cooling assembly (4) comprises a cathode water inlet pipe (8) nested on the inner wall of the insulating pipe (3), the cathode water inlet pipe (8) is coaxially sleeved with a cathode water outlet pipe (9), a cathode water outlet passage is formed between the cathode water inlet pipe (8) and the cathode water outlet pipe (9), one end of the cathode water outlet pipe (9) is connected with one cathode electrode (5) at a position facing each arc passage of the anode electrode (1), and the cathode water inlet pipe (8) is communicated with the cathode water outlet passage at one end close to the cathode electrode (5).
5. The multiple arc channel plasma torch according to claim 1, wherein a plurality of said cathode electrodes (5) are connected to a multi-terminal cathode conductor holder (10), said multi-terminal cathode conductor holder (10) being connected to a cathode terminal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171723.8A CN112996210A (en) | 2021-02-08 | 2021-02-08 | Plasma torch with multiple arc channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171723.8A CN112996210A (en) | 2021-02-08 | 2021-02-08 | Plasma torch with multiple arc channels |
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| Publication Number | Publication Date |
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| CN112996210A true CN112996210A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110171723.8A Pending CN112996210A (en) | 2021-02-08 | 2021-02-08 | Plasma torch with multiple arc channels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025462A (en) * | 2021-11-23 | 2022-02-08 | 上海翰逸环保科技有限公司 | High-voltage alternating current arc plasma torch device |
-
2021
- 2021-02-08 CN CN202110171723.8A patent/CN112996210A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025462A (en) * | 2021-11-23 | 2022-02-08 | 上海翰逸环保科技有限公司 | High-voltage alternating current arc plasma torch device |
| CN114025462B (en) * | 2021-11-23 | 2024-04-19 | 上海翰逸环保科技有限公司 | High-voltage alternating-current arc plasma torch device |
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