CN210840173U - Nozzle for plasma flame generator - Google Patents
Nozzle for plasma flame generator Download PDFInfo
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- CN210840173U CN210840173U CN201921217415.9U CN201921217415U CN210840173U CN 210840173 U CN210840173 U CN 210840173U CN 201921217415 U CN201921217415 U CN 201921217415U CN 210840173 U CN210840173 U CN 210840173U
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- nozzle
- plasma flame
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- hole
- flame generator
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Abstract
The utility model relates to a plasma flame generator's part, especially plasma flame generator are with nozzle, the nozzle is the annular, be equipped with the orifice on the nozzle, the orifice is the through-hole, two are no less than to the orifice, the orifice sets up around the axis of nozzle. The utility model provides a plasma flame generator is with nozzle can form the gas barrier film at the discharge surface to the protection positive pole reduces anodal corruption, very big extension the anodal life, improved whole flame generator's life.
Description
Technical Field
The utility model relates to a plasma flame generator's part, especially plasma flame generator is with nozzle.
Background
An anode of an existing plasma flame generator is usually wrapped outside a cathode, an insulating medium is arranged between the anode and the cathode, the anode is hollow and tubular, a flame hole is formed in one end of the anode, the cathode is close to the flame hole, an air inlet hole is formed in the anode and communicated with the flame hole, air enters the air inlet hole and is discharged from the flame, and the air generates flame at the flame hole. The plasma flame generator with the structure has short service life.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a can form the gas barrier film at the discharge surface to the protection positive pole, and then the plasma flame generator of the life of extension positive pole uses the nozzle, and concrete technical scheme is:
the nozzle for the plasma flame generator is annular, the nozzle is provided with spray holes, the spray holes are through holes, the number of the spray holes is not less than two, and the spray holes are arranged around the axis of the nozzle.
By adopting the technical scheme, the plurality of spray holes can form a larger airflow coverage area, so that a gas isolation film is formed on the discharge surface, the gas isolation film can reduce the corrosion to the anode, and the service life of the anode is ensured; and simultaneously, a stable plasma flame can be formed.
At present, people do not find how to solve the problem of short service life of the anode, and only find that the anode has short service life due to corrosion, and usually the anode is replaced after the anode is used for a standard time or replaced in advance, so that the reliability of continuous operation is ensured. Although the problem can be solved by merely replacing the anode, this has an impact on production and increases costs. Through analysis and test discovery can reduce the corruption of electric arc to the positive pole when the air current forms gaseous barrier film, has prolonged the life of positive pole greatly, and current inlet port only is equipped with one, and the air flow is little, can't form gaseous barrier film in discharge surface department, and plasma flame is unstable, corrodes the positive pole easily.
The gas flow sprayed from the spray holes directly enters the gap between the anode and the cathode, and the gas flow is stable at the moment, so that a gas isolation film can be formed.
Preferably, the orifices are arranged at equal intervals annularly around the axis of the nozzle.
By adopting the technical scheme, stable airflow can be formed by the spray holes arranged at equal intervals in the annular shape, and turbulence is reduced, so that the forming effect of the gas barrier film is improved, and anode corrosion is effectively prevented.
Preferably, the spray holes are one or more of straight holes and tapered holes.
By adopting the technical scheme, the spray holes can adopt straight holes or tapered holes, or the straight holes and the tapered holes are arranged in a staggered mode.
Preferably, the small hole end of the conical hole is positioned in the nozzle, and the large hole end of the conical hole is positioned outside the nozzle.
Through adopting above-mentioned technical scheme, the aperture end of bell mouth is located the inside of nozzle and makes the bell mouth can concentrate the air current to the realization is to the guide effect of air current, and then guarantees to form the gas barrier film.
Preferably, the axis of the nozzle hole intersects the axis of the nozzle perpendicularly or obliquely.
By adopting the technical scheme, the axis of the spray hole is intersected with the axis of the nozzle, namely the spray hole is a radial hole, the airflow sprayed by the spray hole directly enters the discharge surface, and a stable gas isolation film is formed on the discharge surface.
Preferably, the axis of the orifice does not intersect the axis of the nozzle.
By adopting the technical scheme, the spray holes are arranged in the annular array, gas sprayed from the spray holes impacts the inner circular surface of the annular nozzle and then forms a vortex, and the turbine can form a stable gas isolation film on a discharge surface.
Preferably, the orifice is tangential to the inner circumferential surface of the nozzle.
By adopting the technical scheme, the jet holes are tangent to the inner circular surface of the nozzle, so that the air flow from the jet holes forms a vortex rapidly, the turbine is very stable, and a stable gas isolation film can be formed, thereby protecting the anode, reducing the corrosion of the anode and stabilizing the flame.
Preferably, the nozzle is made of ceramic or glass fiber.
By adopting the above technical solution, the nozzle is made of ceramic or glass fiber which is resistant to high temperature and is insulated, since electric arc will possibly occur on the nozzle.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a plasma flame generator is with nozzle can form the gas barrier film at the discharge surface to the protection positive pole reduces anodal corruption, very big extension the anodal life, improved whole flame generator's life.
Drawings
FIG. 1 is a schematic view of a bearing structure of a nozzle for a plasma flame generator;
FIG. 2 is a schematic cross-sectional view illustrating a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the second embodiment;
FIG. 4 is a schematic sectional view showing the third embodiment;
FIG. 5 is a schematic sectional view showing a fourth embodiment;
FIG. 6 is a schematic sectional view of a plasma flame generator equipped with a nozzle for a plasma flame generator.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1 and 2, the nozzle for the plasma flame generator is annular, the nozzle is provided with spray holes 51, the spray holes 51 are through holes, the number of the spray holes 51 is not less than two, and the spray holes 51 are annularly arranged at equal intervals around the axis of the nozzle.
The plurality of spray holes 51 can form a larger airflow coverage area, so that a gas isolation film is formed on the discharge surface, the gas isolation film can reduce the corrosion to the anode, and the service life of the anode is ensured; meanwhile, stable plasma flame can be formed, especially stable airflow can be formed by the annular equidistant arrangement of the spray holes 51, and turbulence is reduced, so that the forming effect of a gas barrier film is improved, and anode corrosion is effectively prevented.
At present, people do not find how to solve the problem of short service life of the anode, and only find that the anode has short service life due to corrosion, and usually the anode is replaced after the anode is used for a standard time or replaced in advance, so that the reliability of continuous operation is ensured. Although the problem can be solved by merely replacing the anode, this has an impact on production and increases costs. Through analysis and test discovery can reduce the corruption of electric arc to the positive pole when the air current forms gaseous barrier film, has prolonged the life of positive pole greatly, and current inlet port only is equipped with one, and the air flow is little, can't form gaseous barrier film in discharge surface department, and plasma flame is unstable, corrodes the positive pole easily.
The gas flow from the nozzle hole 51 directly enters the gap between the anode and the cathode, which is the most effective, because the gas flow is stable and the gas separation film can be formed stably.
The nozzle is made of ceramic or glass fiber. Since arcing will likely occur at the nozzle, the nozzle is made of ceramic or glass fibers that are both temperature resistant and insulating.
The nozzle hole 51 may be a straight hole, and an axis of the nozzle hole 51 perpendicularly intersects with an axis of the nozzle. The axis of the spray hole 51 intersects with the axis of the nozzle, namely the spray hole 51 is a radial hole, and the gas flow sprayed from the spray hole 51 directly enters the discharge surface to form a stable gas isolation film on the discharge surface.
Example two
As shown in fig. 3, the present embodiment is different from the first embodiment in that the nozzle hole 51 is a tapered hole, a small hole end of the tapered hole is located on the inner circumferential surface of the nozzle, and a large hole end of the tapered hole is located on the outer circumferential surface of the nozzle.
The small hole end of the conical hole is positioned in the nozzle, so that the conical hole can concentrate airflow, the airflow is guided, and the formation of the gas isolation film is guaranteed.
The straight holes and the tapered holes can also be arranged in a staggered manner.
EXAMPLE III
As shown in fig. 4, the present embodiment is different from the first embodiment in that the axis of the nozzle hole 51 intersects with the axis of the nozzle perpendicularly and obliquely.
Example four
As shown in fig. 5, the present embodiment is different from the first embodiment in that the nozzle hole 51 is tangential to the inner circumferential surface of the nozzle. The nozzle holes 51 are tangential to the inner circular surface of the nozzle, so that the gas flow from the nozzle holes 51 forms a vortex rapidly, and the turbine is very stable, can form a stable gas isolation film, thereby protecting the anode, reducing the corrosion of the anode and stabilizing the flame.
As shown in fig. 6, the plasma flame generator includes an anode 4 and a cathode 2, the anode 4 is provided with a nozzle 41, one end of the nozzle 41 is an air inlet, the other end is an air outlet, the cathode 2 is arranged opposite to the air inlet of the nozzle 41, an air inlet gap 7 is arranged between the cathode 2 and the anode 4, and the air inlet gap 7 is communicated with the nozzle 41; the ion generating device also comprises an electrode separating frame 6, wherein an ion generating cavity is arranged on the electrode separating frame 6, the cathode 2 and the anode 4 are respectively fixed on the electrode separating frame 6 and are both positioned in the ion generating cavity, and the air inlet gap 7 is communicated with the ion generating cavity; and the nozzle 5 is connected with an air source, the nozzle 5 is fixed on the electrode separation frame 6, the nozzle 5 is communicated with the ion generation cavity, and the nozzle 5 is configured to spray air to the ion generation cavity.
The nozzle 5 sprays gas to the ion generating cavity, the gas enters the gas inlet of the nozzle 41 of the anode 4 through the gas inlet gap 7, the gas generates plasma flame at the gas inlet gap 7 between the anode 4 and the cathode 2, and the plasma flame is sprayed out from the gas outlet.
In order to form the plasma flame, the cathode 2 and the anode 4 must be electrically isolated from each other, the electrode separating frame 6 insulates the anode 4 from the cathode 2, and fixes the anode 4, the cathode 2, and the nozzle 5.
The nozzle 5 is connected with a gas source, the gas source is nitrogen or argon, and the gas inlet pressure is 0.1-0.5 Mpa.
The flame temperature of the plasma flame generator is about 2000 ℃.
Specifically, the end of the cathode 2 opposite to the nozzle 41 is provided with a cathode discharge surface 21, the air inlet of the nozzle 41 is provided with an anode discharge surface 42, the cathode discharge surface 21 and the anode discharge surface 42 are both conical surfaces, the cathode discharge surface 21 and the anode discharge surface 42 are coaxial, and the cathode discharge surface 21 and the anode discharge surface 42 are arranged opposite to form an annular cavity. The taper of the cathode discharge surface 21 is the same as the taper of the anode discharge surface 42. The conicity of the cathode discharge surface 21 and the anode discharge surface 42 is 116-150 degrees. The anode discharge surface 42 and the cathode discharge surface 21 are both conical surfaces, have the same taper, and are coaxially arranged, so that the discharge stability can be ensured. The tapered discharge surface can provide preferential discharge sites.
Claims (4)
1. A nozzle for a plasma flame generator, characterized in that,
the nozzle is annular, spray holes are formed in the nozzle, the spray holes are through holes, the number of the spray holes is not less than two, and the spray holes are arranged around the axis of the nozzle;
the spray holes are one or more of straight holes and tapered holes;
the axis of the spray hole does not intersect with the axis of the nozzle;
the orifice is tangential to the inner circular surface of the nozzle.
2. The nozzle for a plasma flame generator according to claim 1,
the spray holes are annularly arranged at equal intervals around the axis of the nozzle.
3. The nozzle for a plasma flame generator according to claim 1,
the small hole end of the conical hole is positioned in the nozzle, and the large hole end of the conical hole is positioned outside the nozzle.
4. The nozzle for a plasma flame generator according to claim 1,
the nozzle is made of ceramic or glass fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217415.9U CN210840173U (en) | 2019-07-30 | 2019-07-30 | Nozzle for plasma flame generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217415.9U CN210840173U (en) | 2019-07-30 | 2019-07-30 | Nozzle for plasma flame generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210840173U true CN210840173U (en) | 2020-06-23 |
Family
ID=71259274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921217415.9U Active CN210840173U (en) | 2019-07-30 | 2019-07-30 | Nozzle for plasma flame generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210840173U (en) |
-
2019
- 2019-07-30 CN CN201921217415.9U patent/CN210840173U/en active Active
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