CN210202164U - Plasma generator with adjustable power - Google Patents
Plasma generator with adjustable power Download PDFInfo
- Publication number
- CN210202164U CN210202164U CN201921102760.8U CN201921102760U CN210202164U CN 210202164 U CN210202164 U CN 210202164U CN 201921102760 U CN201921102760 U CN 201921102760U CN 210202164 U CN210202164 U CN 210202164U
- Authority
- CN
- China
- Prior art keywords
- cathode
- anode
- plasma generator
- cyclone
- side cyclone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a power-adjustable plasma generator, which comprises a cathode, an anode, a cathode-anode side cyclone cover, an isolation insulating cover and a shell, wherein the isolation insulating cover and the shell are arranged between the cathode and the anode; the cathode and anode side cyclone gas hood is provided with cyclone gas inlets communicated with the arc channel, the cathode and anode side cyclone gas hood is correspondingly sleeved outside the cathode and the anode and keeps relative sliding with the cathode and the anode, so that the change of the distance between the cathode and the anode and the adjustment of the arc channel are realized, and simultaneously, the gas flow entering the arc channel through the side cyclone gas hood can be adjusted to realize the change of the power of the device.
Description
Technical Field
The utility model relates to a plasma generator field especially relates to plasma generator with adjustable power.
Background
The thermal plasma has the characteristics of high temperature, high enthalpy, high energy density, controllable atmosphere and the like, and is widely applied to cutting, welding, spraying,Material preparation, waste treatment and the like. The thermal plasma generator is capable of stably maintaining discharge and generating a temperature of 3 × 103K～3×104The plasma generator of K may be classified into an arc plasma generator, a high-frequency induction plasma generator, and a combustion plasma generator according to the generation method. The most common of these is the non-transferred dc arc plasma generator.
As a device for generating thermal plasma, a plasma generator is required to have characteristics of high stability, high efficiency, long life, and the like in industrial applications. Different application areas have different requirements on the plasma jet. If plasma cutting requires high jet speed and high strength; the plasma waste treatment requires large jet sectional area and strong activity. The different requirements of the jets impose different requirements on the structural design of the plasma generator.
Typically, an arc plasma generator includes a cathode and at least one anode, an electric arc is generated between the cathode and the anode, and the heat energy of the arc is carried away by the working gas to form a plasma jet.
To obtain high arc voltages, to increase the generator power, the arc stability and the generator lifetime, it is common to add intermediate insertion sections between the generator cathode and anode, insulated from each other at a floating potential, to form a long arc stable on the generator axis. Such generators are also known as segmented or laminated plasma generators.
Due to the addition of the middle insertion section between the anode and the cathode, the length of an arc column of the electric arc is lengthened, the voltage of the working arc is increased, and the power of the generator is increased. Meanwhile, the arc striking point of the electric arc has a small movable range at the anode, so that the electric arc shunting process is reduced to a certain extent, the stability of the electric arc is improved, and the service life of the generator is prolonged compared with a generator without an intermediate insertion section structure. The plasma generator with the middle insertion section is applied to the industrial field, and the process quality and the stability can be improved to a certain extent.
However, since the intermediate insertion sections are made of a metal material (e.g., red copper) with good electrical conductivity, although the intermediate insertion sections are insulated from the cathode and the anode of the plasma generator and the intermediate insertion sections are also insulated from each other by an insulating material, it is still difficult to avoid different degrees of breakdown between the arc column and the intermediate insertion sections, i.e., "arcing" occurs, which burns the electrodes of the plasma generator and reduces the operating stability and safety of the plasma generator.
In addition, once the distribution position and the size of the middle insertion section are determined, the installation position in the plasma generator is fixed and unadjustable, so that the distribution position and the size of the middle insertion section become the key and the difficulty of design, cannot be determined through simple theoretical calculation and simulation, and can be accurately quantified by combining repeated actual tests. Meanwhile, the engineering structure of the plasma generator is complicated, and particularly, the reliability can be met only by comprehensively considering a plurality of factors in the design of the sealing structure of the cooling medium.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who mainly solves provides a plasma generator with adjustable power, can adjust the length of the electric arc passageway of discharging between negative-positive pole, still can make negative, positive pole arcing point all move in different positions through adjusting working gas's flow and distribution proportion, extension operating duration by a wide margin.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the plasma generator with adjustable power comprises a cathode, an anode, a cathode-anode side cyclone cover, an isolation insulating cover arranged between the cathode and the anode, and a shell; the cathode and the anode are respectively and correspondingly provided with a cathode displacement executing mechanism and an anode displacement executing mechanism which are used for adjusting the size of an electric arc channel between the cathode and the anode; the cathode and anode side cyclone hoods are correspondingly sleeved outside the cathode and the anode and keep relative sliding with the cathode and the anode, so that the air quantity entering the arc channel through the side cyclone hoods is adjusted while the distance between the cathode and the anode is changed.
Furthermore, the displacement actuating mechanism is driven by a stepping motor or a servo motor to drive a connecting rod to control and adjust the positions of the cathode and the anode.
The utility model discloses be equipped with corresponding displacement actuating mechanism respectively at negative pole and positive pole, can adjust the relative position of negative pole and positive pole in the use to change the operating condition of machine.
Furthermore, the cathode and the anode are cylindrical in shape, the outer diameters of the cathode and the anode are matched with the inner diameter of the cathode and the anode side cyclone cover, the cathode and the anode side cyclone cover are provided with cyclone air inlets communicated with the electric arc channel, and the cyclone air inlets are communicated with the atmosphere through a channel between the side cyclone cover and the shell.
Furthermore, the main body of the side cyclone cover is cylindrical, a plurality of annular wafers surrounding the circumference are symmetrically arranged on the inner wall surface and the outer wall surface of the cylinder, and the cyclone air inlet is arranged between the two wafers.
Furthermore, the setting direction of the rotational flow air inlet hole and the radial direction of the side rotational flow air cover form a certain included angle.
Furthermore, the included angle between the setting direction of the rotational flow air inlet hole and the radial direction of the side rotational flow air cover is 15-75 degrees.
The setting direction of the rotational flow air inlet hole forms a certain included angle with the radial direction of the side rotational flow air cover, so that the air flow speed direction has a tangential vector and an axial vector at the same time.
Furthermore, a cooling water channel for leading cooling water to cool the gas hood is arranged in the cathode side cyclone hood wall, and a cathode side cyclone hood water-stop shell which is communicated with the cooling water channel and used as a cooling water flow channel is arranged in the shell.
Further, the isolation insulation cover is arranged between the cathode side cyclone covers and the anode side cyclone covers.
The isolation insulating cover is arranged between the cathode and anode side cyclone covers, and can ensure the insulation between the cathode and the anode.
Further, the cathode and the anode are cylindrical, water-cooling interlayers are respectively arranged on the outer walls of the cylinders, and further, cooling water paths and loops are formed in the interlayer by arranging separation layers at the division positions in the interlayer.
Furthermore, one end of the cathode is provided with a cathode air inlet communicated with the arc channel, and the cathode air inlet is communicated with a cathode air inlet channel communicated with the outside.
The utility model discloses in, working gas can follow negative pole inlet port, whirl inlet port and get into the electric arc passageway, and after the relative position changed between negative-positive pole, the accessible was adjusted working gas's flow and distribution proportion and can be made negative, positive pole arc point all move in different positions, prolongs operating duration by a wide margin.
The utility model has the advantages that:
(1) in the utility model, because the distance between the cathode and the anode can be freely adjusted, the length of the arc column formed between the cathode and the anode can be changed along with the change of the distance between the cathode and the anode, and the arc channel is adjustable.
(2) The utility model discloses in, because arc column length can change along with the displacement of electrode, arc voltage changes thereupon, can be under the unchangeable circumstances of input current, lean on the power that obtains the demand of adjusting arc column length, make power control range widen.
(3) The utility model discloses in, in the region that negative pole relative position pulled open gradually, along with the change of electric arc post length degree, can crescent from the flow of the radial whirl gas that the whirl hole that whirls on the cyclone cover got into to carry out radial compression to electric arc to increase the fluidic rotation momentum of electric arc.
(4) The utility model discloses in, working gas divides two positions to get into working gas, can get into gaseous proportion through changing two positions and control flow field and velocity of flow, adjusts the position that negative pole and anode arc are being pointed to the arc to the rotatory plane of radial section of removal electric arc ensures that electrode eye length direction evenly consumes, extension operating duration.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a three-dimensional cut isometric view of the present invention;
FIG. 3 is a schematic diagram of a plasma generator according to the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
in the figure, 1 cathode, 2 anode, 3 cathode air inlet channel, 4 cathode air shell, 5 cathode water-stop shell, 6 cathode water-cooling interlayer, 61 cathode water inlet zone, 62 cathode water outlet zone, 7 cathode side cyclone gas cover water-stop shell, 8 cathode side cyclone gas cover cooling channel, 9 cathode side cyclone gas channel, 10 shell, 11 cathode side cyclone gas cover, 12 cyclone air inlet holes, 13 isolation insulation cover, 14 anode side cyclone gas cover, 15 anode side cyclone gas channel, 16 anode side cyclone gas cover water-stop shell, 17 anode side cyclone gas cover cooling channel, 18 anode water-stop shell, 19 anode water-cooling interlayer, 191 anode water inlet zone, 192 anode water outlet zone, 20 cathode displacement actuator, 21 anode displacement actuator, 22 arc channel, 23 transmission part, 24 tail part, 25 cathode air inlet holes, 26 cooling water channel, α cyclone air inlet holes form an included angle with the radial direction in the radial plane.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the basis of the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1 to 4, a plasma generator with an adjustable arc passage size is provided, which comprises a cathode 1, an anode 2, a cathode side cyclone cover 11, an anode side cyclone cover 14, an isolation insulating cover 13 arranged between the cathode and the anode, and a housing 10.
The cathode 1 and the anode 2 are respectively and correspondingly provided with a cathode displacement actuator 20 and an anode displacement actuator (21) for adjusting the size of an arc channel between the cathode and the anode; the cathode and anode displacement actuating mechanism is driven by a stepping motor or a servo motor to control and adjust the positions of the cathode and the anode.
The cathode 1 and the anode 2 are cylindrical, the outer diameters of the cathode 1 and the anode 2 are respectively matched with the inner diameters of the cathode side cyclone cover 11 and the anode side cyclone cover 14, cyclone air inlets 12 communicated with the arc channel 22 are arranged on the cathode side cyclone cover 11 and the anode side cyclone cover 14, a cathode side cyclone air channel 9 is reserved between the cathode side cyclone cover 11 and the shell 10, an anode side cyclone air channel 15 is reserved between the anode side cyclone cover 11 and the shell 10, and the cyclone air inlets 12 are communicated with the atmosphere through the cathode side cyclone air channel 9 and the anode side cyclone air channel 15.
The cathode side cyclone cover 11 and the anode side cyclone cover 14 are respectively sleeved outside the cathode 1 and the anode 2 correspondingly, and an area enclosed by the cathode 1, the anode 2, the cathode side cyclone cover 11, the isolation insulating cover 13 and the anode side cyclone cover 14 is an arc channel 22; the cathode side cyclone cover 11 and the anode side cyclone cover 14 keep relative sliding with the cathode and the anode, so that the air quantity entering the arc channel 22 through the side cyclone covers is adjusted while the distance between the cathode and the anode is changed.
When the plasma generator works, working gas flow for generating initial discharge enters the arc channel 22 from the cathode 1, at the moment, the cathode 1 is very close to the anode 2, and all the cyclone air inlet holes 12 in the cathode side cyclone cover 11 and the anode side cyclone cover 14 are shielded. The working gas in the cathode-side swirl gas passage 9 and the anode-side swirl gas passage 15 does not enter the arc passage 22.
Along with the adjustment of the cathode displacement actuating mechanism 20 and the anode displacement actuating mechanism 21, the distance between the cathode 1 and the anode 2 is gradually increased, so that the length of an arc column is increased, the working arc voltage is increased, and the power of the plasma generator is increased. Meanwhile, the unblocked swirl air inlets 12 in the cathode side swirl air hood 11 and the anode side swirl air hood 14 are gradually increased, correspondingly, the flow of working gas entering the arc channel 22 in the cathode side swirl air channel 9 and the anode side swirl air channel 15 is gradually increased, the arc in the arc channel 22 is radially restricted and compressed in a wider range, and the arc is ensured to be only arc-struck on the inner wall surfaces of the cathode 1 and the anode 2; meanwhile, the arc fluid generates rotary momentum at more radial positions, so that arc striking points of the arc uniformly rotate on the inner wall surfaces of the cathode 1 and the anode 2 along the circumference, and the uniform electrode consumption rate is kept.
Example 2
On the basis of example 1, as a preferred embodiment: the cathode side cyclone cover 11 and the anode side cyclone cover 14 are cylindrical, a plurality of annular circular sheets around the circumference are symmetrically arranged on the inner wall surface and the outer wall surface of the cylinder, and the cyclone air inlet 12 is arranged between the two circular sheets.
Example 3
On the basis of example 2, as a preferred embodiment: the setting direction of the cyclone air inlet 12 and the radial direction of the side cyclone cover form an included angle of 15-75 degrees. The side cyclone hood is a general name of the cathode side cyclone hood 11 and the anode side cyclone hood 14.
Example 4
On the basis of example 3, as a preferred embodiment: a cooling water channel 26 for introducing a cooling water cooling air cover is arranged in the wall of the cathode side cyclone cover 11 and the wall of the anode side cyclone cover 14, and the shell 10 is provided with a cathode side cyclone cover water-stop shell 7 and an anode side cyclone cover water-stop shell 16 which are communicated with the cooling water channel 26 and used as cooling water flow channels; the cooling water channel of the side cyclone cover is a through hole which axially penetrates through the wall surface of the side cyclone cover.
The cathode side cyclone cover water-proof shell 7, the cathode side cyclone cover 11, the isolation insulating cover 13 and the shell 10 jointly enclose an area which is a cathode side cyclone air channel 9, and the anode side cyclone cover water-proof shell 16, the anode side cyclone cover 14, the isolation insulating cover 13 and the shell 10 jointly enclose an area which is an anode side cyclone air channel 15.
Example 5
On the basis of example 4, as a preferred embodiment: the isolation insulating cover 13 is arranged between the cathode side cyclone cover 11 and the anode side cyclone cover 14 to keep the insulation between the cathode and the anode, and the isolation insulating cover 13 is internally provided with a pore canal communicated with the cooling water channel 26 of the side cyclone cover.
The plurality of cooling water channels 26 are uniformly distributed in the circumferential direction of the side cyclone cover, and cooling water of the cyclone cover enters the device through the cathode side cyclone cover water-stop shell 7 and then flows out through the cooling water channel of the cathode side cyclone cover, the pore channel of the isolation insulating cover, the cooling water channel of the anode side cyclone cover and the anode side cyclone cover water-stop shell 16 in sequence.
Example 6
On the basis of example 5, as a preferred embodiment: the cathode 1 comprises a transmission part 23 and a tail part 24, the transmission part 23 is cylindrical, one side of the transmission part 23, which is far away from the anode 2, is fixedly connected with the tail part 24, and the tail part is provided with a plurality of cathode air inlet holes 25 communicated with the arc channel 22 in the cathode.
Example 7
On the basis of example 6, as a preferred embodiment: the tail part 24 is cylindrical, and the cathode air inlet 25 is arranged on the circumferential wall of the tail part. One end of the transmission part 23 connected with the tail part 24 is provided with a cathode gas shell 4 around the tail part 24, the area formed between the cathode gas shell 4 and the tail part 24 is a cathode gas inlet channel 3, and the cathode gas inlet channel 3 is communicated with the outside.
In the process of adjusting the length of the arc column, the ratio of the gas flow entering the cathode gas channel 3, the cathode side cyclone gas channel 9 and the anode side cyclone gas channel 15 can be adjusted, and the axial velocity distribution of the arc fluid in the arc channel 22 is changed, so that the axial positions of the arc points on the inner wall surfaces of the cathode 1 and the anode 2 are changed.
Example 8
On the basis of example 7, as a preferred embodiment: the cathode 1 and the anode 2 are cylindrical, water-cooling interlayers are respectively arranged on the outer walls of the cylinders, a cathode cooling channel 6 enabling cooling water to enter the cathode water-cooling interlayer is arranged on the cathode, and an anode cooling channel 19 enabling the cooling water to enter the anode water-cooling interlayer is arranged on the anode.
A cathode water-stop shell 5 is arranged in the cathode cooling channel 6, and the cathode water-stop shell 5 divides the cathode cooling channel 6 into a cathode water inlet area 61 and a cathode water outlet area 62; an anode water-stop shell 18 is arranged in the anode cooling channel 19, and the anode water-stop shell 18 divides the anode cooling channel 19 into an anode water inlet area 191 and an anode water outlet area 192.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A power-adjustable plasma generator is characterized by comprising a cathode (1), an anode (2), cathode and anode side cyclone hoods (11, 14), an isolation insulating hood (13) arranged between the cathode and the anode and a shell (10); the cathode and the anode are respectively and correspondingly provided with a cathode displacement actuator (20) and an anode displacement actuator (21) which are used for adjusting the size of an electric arc channel between the cathode and the anode; the cathode and anode side cyclone hoods are correspondingly sleeved outside the cathode and the anode and keep relative sliding with the cathode and the anode, so that the air quantity entering the arc channel through the side cyclone hoods is adjusted while the distance between the cathode and the anode is changed.
2. The adjustable power plasma generator as claimed in claim 1, wherein the displacement actuator is driven by a stepping motor or a servo motor to drive a connecting rod to control and adjust the positions of the cathode and the anode.
3. The power adjustable plasma generator as claimed in claim 1, wherein the cathode and anode are cylindrical in shape, the outer diameter of the cathode and anode is matched with the inner diameter of the cathode and anode side cyclone cover, the cathode and anode side cyclone cover is provided with a cyclone air inlet (12) communicated with the arc channel, and the cyclone air inlet is communicated with the atmosphere through a channel between the side cyclone cover and the shell.
4. The power adjustable plasma generator as claimed in claim 3, wherein the side cyclone gas cover body is cylindrical, a plurality of annular disks are symmetrically arranged around the circumference on the inner wall and the outer wall of the cylinder, and the cyclone gas inlet is arranged between the two disks.
5. The power adjustable plasma generator as claimed in claim 4, wherein the cyclone air inlet holes are arranged at an angle with the radial direction of the side cyclone cover.
6. The power adjustable plasma generator of claim 5, wherein the included angle is 15 ° to 75 °.
7. A power adjustable plasma generator according to claim 1, characterized in that the inside of the cathode side cyclone hood wall is provided with cooling water channels (26) for cooling the air hood with cooling water.
8. The power adjustable plasma generator according to claim 7, characterized in that a cathode-anode side cyclone hood water-stop casing (7, 16) as a cooling water flow passage communicating with the cooling water passage is provided in the housing.
9. The power adjustable plasma generator of claim 1, wherein the insulating shield is disposed between the cathode and anode side cyclone shields.
10. The power adjustable plasma generator according to claim 1, wherein one end of the cathode is provided with a cathode inlet hole (25) communicating with the arc passage, the cathode inlet hole communicating with a cathode inlet passage (3) communicating with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102760.8U CN210202164U (en) | 2019-07-15 | 2019-07-15 | Plasma generator with adjustable power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102760.8U CN210202164U (en) | 2019-07-15 | 2019-07-15 | Plasma generator with adjustable power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210202164U true CN210202164U (en) | 2020-03-27 |
Family
ID=69866913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921102760.8U Active CN210202164U (en) | 2019-07-15 | 2019-07-15 | Plasma generator with adjustable power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210202164U (en) |
-
2019
- 2019-07-15 CN CN201921102760.8U patent/CN210202164U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110248459A (en) | A kind of plasma generator of arc channel dimension adjustable | |
| CN103260330B (en) | A kind of many cathode central anode arc plasma generator | |
| EP2663168A2 (en) | Plasma torch of non-transferred and hollow type | |
| CN109618483B (en) | Multi-arc plasma generator | |
| CN107920411B (en) | Hybrid plasma generator for processing silicon-based materials | |
| CN203378130U (en) | Anode of supersonic speed plasma spray gun and supersonic speed plasma spray gun | |
| CN203645904U (en) | Rotary torch head device of plasma torch | |
| CN107124814A (en) | A kind of many negative electrode laminar flow plasma powder spheroidization devices | |
| CN1296951C (en) | Circuit breaker | |
| CN207560425U (en) | A kind of hybrid plasma body generator for silica-base material processing | |
| CN108601195B (en) | Compact high-enthalpy high-power DC non-arc-rotating plasma torch | |
| CN110881239B (en) | Multi-arc plasma reactor introducing external magnetic field and operation method | |
| CN105282952A (en) | 500 KW magnetic stability non-transferred arc plasma generator | |
| WO2022082887A1 (en) | Novel direct current plasma generator | |
| WO2017101581A1 (en) | Self-energy arc extinguishing chamber for increasing thermal expansion effect | |
| CN102625561A (en) | 200KW non-transferred arc plasma generator and arc-striking method | |
| CN210202164U (en) | Plasma generator with adjustable power | |
| CN104684234B (en) | High-power air-cooled plasma generator | |
| US6525292B1 (en) | Cartridge for a plasma torch and plasma torch fitted therewith | |
| CN103841742A (en) | Magnetic rotating arc plasma generator | |
| CN107124815B (en) | plasma generator | |
| CN106714437A (en) | Input-power-adjustable dual-anode arc heating plasma torch | |
| CN202503803U (en) | 200-KW non-transferred arc plasma generator | |
| CN112983283B (en) | Plasma torch rock breaking composite drill bit and plasma torch rock breaking composite drill | |
| CN214481920U (en) | Plasma torch for material ablation test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |