CN210435524U - Plasma torch - Google Patents
Plasma torch Download PDFInfo
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- CN210435524U CN210435524U CN201920590912.7U CN201920590912U CN210435524U CN 210435524 U CN210435524 U CN 210435524U CN 201920590912 U CN201920590912 U CN 201920590912U CN 210435524 U CN210435524 U CN 210435524U
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- pipe
- lamp wall
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Abstract
The utility model provides a plasma blowtorch, plasma blowtorch includes body, nozzle assembly, water-cooling subassembly and ignition assembly, the nozzle assembly install in this is internal, the water-cooling subassembly part install in this is external, ignition assembly is used for arousing plasma gas, the body include input, output and lamp wall input and output set up relatively in the body both ends, the lamp wall by the output forms to the input is sunken, the lamp wall has the internal diameter to follow the output to the structure that the direction of input shrinks gradually. The plasma torch has advantages of reducing internal adhesion and increasing a service life.
Description
Technical Field
The utility model relates to an ultra-temperature heating instrument field especially relates to a plasma torch.
Background
High-temperature plasma gas is used as an ultrahigh-temperature heating tool, and is widely applied to the manufacturing fields of nano-scale high-grade powder preparation, optical fibers, metal powder and the like, thermal plasma formed by utilizing an induction plasma technology has the advantages of high energy density, high heating intensity and high temperature gradient, but the high temperature requirement on the high temperature resistance of the wrapping plasma gas material is very strict due to the high temperature, so that the plasma flame state of the existing blast lamp structure is unstable, the powder is easily attached to the inside of the blast lamp in the manufacturing process, the blast lamp material is easily deformed due to high temperature after exceeding 50KW, the quartz blast lamp is easily crystallized, the service life of the blast lamp is very short, and the ceramic blast lamp is easily cracked in the cold-hot alternation process.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a plasma torch that reduces the internal adhesion and increases the lifetime.
The utility model provides a plasma blowtorch, plasma blowtorch includes body, nozzle assembly, water-cooling subassembly and ignition assembly, the nozzle assembly install in this is internal, the water-cooling subassembly part install in this is external, ignition assembly is used for arousing plasma gas, the body include input, output and lamp wall input and output set up relatively in the body both ends, the lamp wall by the output forms to the input is sunken, the lamp wall has the internal diameter to follow the output to the structure that the direction of input shrinks gradually.
Furthermore, one end of the spray pipe assembly penetrates through the input end and is communicated with the lamp wall.
Furthermore, the water-cooling assembly comprises a first water-cooling assembly and a second water-cooling assembly which are communicated with each other, the first water-cooling assembly is installed between the spray pipe assembly and the body, and the second water-cooling assembly is installed outside the body.
Furthermore, one end of the first water cooling assembly penetrates through the input end, and the other end of the first water cooling assembly wraps the lamp wall.
Furthermore, the second water cooling assembly is spirally arranged outside the body corresponding to the lamp wall in a surrounding manner.
Furthermore, the spray pipe assembly comprises a first spray pipe and a second spray pipe, the first spray pipe and the second spray pipe are coaxially arranged, and the second spray pipe is installed outside the first spray pipe.
Furthermore, first water cooling module includes inner tube and outer tube, inner tube and outer tube with the coaxial setting of second spray tube, the inner tube install in outside the second spray tube, the outer tube install in outside the inner tube, second water cooling module both ends communicate respectively in outer tube and inner tube.
Furthermore, the first spray pipe and the second spray pipe are arranged in parallel and respectively penetrate through the input end to be communicated with the lamp wall.
Further, the lamp wall comprises a tubular part and a diameter-variable part which are connected with each other, one end of the tubular part is communicated with the output end, and the other end of the tubular part is connected with the diameter-variable part.
Further, the inner diameter of the diameter-variable portion gradually shrinks in a direction from the output end to the input end.
In the plasma torch, the lamp wall adopts a reducing structure, so that the gas flow speed is increased, the energy density of plasma is improved and the adhesion of powder on the lamp wall is reduced under the condition of the same gas flux. The water cooling assembly keeps the low-temperature state of the lamp wall, ensures the performance of the lamp wall material, prolongs the service life and reduces the use cost.
Drawings
Fig. 1 is a schematic structural diagram of a plasma torch according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart illustrating an application method of the plasma torch according to an embodiment of the present invention.
Description of the main elements
| |
100 |
| |
10 |
| |
11 |
| |
12 |
| |
13 |
| |
131 |
| Diameter- |
132 |
| |
14 |
| |
20 |
| |
21 |
| First connecting |
211 |
| |
22 |
| Second connecting |
221 |
| |
30 |
| The first |
31 |
| |
311 |
| |
3111 |
| |
312 |
| Water inlet pipe | 3121 |
| A first cavity | 313 |
| |
314 |
| Second |
32 |
| Second |
321 |
| Second |
322 |
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the invention, which are described as part of the invention, rather than as a whole. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the scope protected by the embodiments of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention.
Referring to fig. 1, the plasma torch 100 is used for ultra-high temperature heating of an object. The plasma torch 100 includes a body 10, a torch assembly 20, a water cooling assembly 30, and an ignition assembly (not shown). The nozzle assembly 20 is installed in the body 10, the water cooling assembly 30 is installed between the nozzle assembly 20 and the body 10, and part of the water cooling assembly extends to the outside of the body 10, and the ignition assembly is installed at one end of the body 10 to excite plasma gas. The plasma torch 100 is made of one or more of glass, ceramic, or quartz material, and preferably, the plasma torch 100 is made of quartz material.
The body 10 includes an input end 11, an output end 12 and a lamp wall 13. The input end 11 and the output end 12 are oppositely arranged at two ends of the body 10, the input end 11 is used for inputting carrier gas and raw materials, and the output end 12 is used for outputting high-temperature plasma gas. The output end 12 is recessed towards the input end 11 to form a lamp wall 13, a reaction zone 14 is arranged in the lamp wall 13, and the reaction zone 14 is used for high-temperature reaction of the carrier gas, the raw material and the plasma gas. In an embodiment, the lamp wall 13 is of a reducing structure, and the inner diameter of the lamp wall 13 gradually shrinks along the direction from the output end 12 to the input end 11, and is in a gradual change shape or a step shape, so that under the condition of the same gas flux, the gas flow rate is increased, the energy density of plasma is improved, and the adhesion of powder to the lamp wall 13 in the manufacturing process is reduced. In another embodiment, the lamp wall 13 is partially of a variable diameter structure, specifically, the lamp wall 13 includes a tubular portion 131 and a variable diameter portion 132 connected to each other, one end of the tubular portion is connected to the output end 12, and the other end of the tubular portion is connected to the variable diameter portion, and an inner diameter of the variable diameter portion gradually shrinks along the direction from the output end 12 to the input end 11, and is in a gradual change or step shape.
One end of the nozzle assembly 20 passes through the input end 11 and communicates with the lamp wall 13 to introduce the carrier gas, the raw material, and the plasma gas into the lamp wall 13. The nozzle assembly 20 includes a first nozzle 21 and a second nozzle 22. In one embodiment, the second nozzle 22 is coaxially disposed outside the first nozzle 21. In another embodiment, the second nozzle 22 is disposed in parallel with the first nozzle 21 and respectively passes through the input end 11 to communicate with the lamp wall 13.
Specifically, one end of the first nozzle 21 is connected to the lamp wall 13, and the other end is provided with a first connecting portion 211. The first connection portion 211 is used to connect a carrier gas and raw material input device, so as to input the carrier gas and raw material into the reaction region 14 through the first nozzle 21. One end of the second nozzle 22 is communicated with the lamp wall 13, and the other end is connected to the tube wall of the first nozzle 21, so that the second nozzle 22 is fixed outside the first nozzle 21 and one end of the second nozzle 22, which is far away from the lamp wall 13, is closed. A second connecting portion 221 is disposed on a tube wall of the second nozzle 22 away from the lamp wall 13, and the second connecting portion 221 is used for connecting a plasma gas input device to input the plasma gas into the reaction region 14 through the second nozzle 22. In one embodiment, the plasma gas comprises argon, oxygen, nitrogen, helium, or a gas capable of plasma excitation.
The water cooling assembly 30 includes a first water cooling assembly 31 and a second water cooling assembly 32, wherein one end of the first water cooling assembly 31 is communicated with the second water cooling assembly 32, so that the cooling liquid circulates. One end of the first water cooling assembly 31 penetrates through the input end 11, and the other end of the first water cooling assembly wraps the lamp wall 13, so that the lamp wall 13 is cooled by the cooling liquid. Specifically, first water cooling module 31 includes inner tube 311 and outer tube 312, inner tube 311 and outer tube 312 respectively with second spray tube 22 is coaxial to be set up, inner tube 311 set up in outside second spray tube 22, inner tube 311 pipe wall with second spray tube 22 pipe wall forms first cavity 313, inner tube 311 is close to the one end of input 11 connect in the pipe wall of second spray tube 22, in order to incite somebody to action inner tube 311 is fixed in outside the second spray tube 22 and with the inner tube 311 is kept away from the one end of lamp wall 13 is sealed. A water outlet pipe 3111 is arranged on the pipe wall of the inner pipe 311 close to the input end 11, and the water outlet pipe 3111 penetrates through the outer pipe 312 and one side of the body 10 to discharge the cooling liquid.
The outer tube 312 is installed outside the inner tube 311, a second cavity 314 is formed between the tube wall of the outer tube 312 and the tube wall of the inner tube 311, and one end of the outer tube 312 close to the input end 11 is connected to the tube wall of the inner tube 311, so that the outer tube 312 is fixed outside the inner tube 311 and one end of the outer tube 312 far away from the lamp wall 13 is closed. A water inlet pipe 3121 is provided on the pipe wall of the outer pipe 312 near the input end 11, and the water inlet pipe 3121 penetrates one side of the body 10 to input the cooling liquid.
The second water cooling module 32 is spirally wound on the lamp wall 13 and is arranged outside the body 10 corresponding to the lamp wall 13, the second water cooling module 32 is close to one end of the output end 12 is provided with a second water inlet pipe 321, the second water inlet pipe 321 penetrates through one side of the body 10 and is connected to the outer pipe 312, and therefore cooling liquid in the outer pipe 312 is input into the second water cooling module 32. A second water outlet pipe 322 is arranged at one end of the second water cooling assembly 32 far away from the output end 12, and the second water outlet pipe 322 penetrates through the body 10 and the outer pipe 312 to be connected to the inner pipe 311, so that the cooling liquid in the second water cooling assembly 32 is output to the inner pipe 311.
When the water cooling assembly 30 is in use, the cooling fluid enters the second cavity 314 through the water inlet pipe 3121, and when the cooling fluid reaches the end of the outer tube 312 near the output end 12, the cooling fluid exchanges heat with the heat in the lamp wall 13 to cool the lamp wall 13. The cooling liquid in the second cavity 314 is delivered to the second water cooling module 32 through the second water inlet pipe 321 to further cool the outer layer of the plasma torch 100. The cooling liquid in the second water cooling module 32 is output to the first cavity 313 through the second water outlet pipe 322 to cool the nozzle assembly 20. The coolant in the first cavity 313 is finally discharged through the water outlet pipe 3111. The water cooling assembly 30 can maintain the low temperature state of the lamp wall 13, ensure the performance of the material of the lamp wall 13, increase the service life by 5-6 times compared with the common air-cooled blowtorch, and reduce the use cost. The water cooling assembly 30 can control the temperature of the lamp wall 13 by adjusting the flow rate of the cooling liquid, so that the reaction zone 14 can be suitable for plasma gases matched with various gases, and the reaction atmosphere of the plasma can be freely selected. The water cooling assembly 30 can also cool the outer layer of the plasma torch 100, so that the material requirement of the outer layer of the plasma torch 100 is reduced, and high-purity quartz or special ceramics are not required to be used, thereby reducing the production cost.
The ignition assembly is mounted on the sidewall of the body 10 near the reaction zone 14 to excite the plasma gas. In one embodiment, the ignition assembly momentarily applies a high voltage spark to the gas passing through the reaction zone 14 to ignite the plasma gas.
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating an application method of the plasma torch 100 according to an embodiment of the present invention, which specifically includes the following steps:
s1, introducing plasma gas into the second nozzle;
specifically, the plasma gas is introduced into the second nozzle 22 through the second connection portion 221, and the second nozzle 22 inputs the plasma gas into the reaction region 14. The plasma gas is a rotating jet gas, and the range of an included angle between the flow direction of the plasma gas and the axial direction of the second nozzle 22 is 45-90 degrees, so that the plasma gas is rotationally ejected to the reaction region 14.
The plasma gas comprises argon, oxygen, nitrogen, helium or a gas capable of plasma excitation, and in one embodiment, the plasma gas is argon.
S2, introducing carrier gas and raw materials into the first spray pipe;
specifically, the carrier gas and the raw material are introduced into the first nozzle 21 through the first connection portion 211, and the first nozzle 21 inputs the carrier gas and the raw material into the reaction region 14. The carrier gas is argon, oxygen, nitrogen and the like. The raw material is gas or powder particles, and in one embodiment, the raw material is gas. Specifically, the raw material is SiCl4、SiF4And a dopant.
S3, introducing cooling liquid into the water cooling assembly;
in particular, the cooling fluid enters the second cavity 314 through the inlet tube 3121, and when the cooling fluid reaches the end of the outer tube 312 near the output end 12, the cooling fluid exchanges heat with the heat in the lamp wall 13 to cool the lamp wall 13. The cooling liquid in the second cavity 314 is input to the second water cooling module 32 through the second water inlet pipe 321 to further cool the outer layer of the plasma torch 100. The cooling liquid in the second water cooling module 32 is output to the first cavity 313 through the second water outlet pipe 322 to cool the nozzle assembly 20. The coolant in the first cavity 313 is finally discharged through the water outlet pipe 3111. In one embodiment, the cooling liquid is pure water to ensure that the stability of the plasma gas is not affected.
S4, starting the ignition assembly;
specifically, the ignition assembly applies a high voltage spark to the plasma gas at the instant it passes through the reaction zone 14 to excite the plasma gas.
And S5, adjusting the flow rate of the cooling liquid in the water cooling assembly to control the temperature of the lamp wall so as to control the temperature of the reaction zone and further control the form of the product in the reaction zone.
Specifically, after the cooling liquid is introduced, the temperature of the lamp wall 13 is maintained at 300 ℃ or lower, and the raw material gas SiCL is4、SiF4And the formation of SiO after the dopant passes through the reaction zone 142And (3) powder. The flow speed of the cooling liquid in the water cooling assembly 30 is accelerated by adjusting, the temperature of the lamp wall 13 is reduced to below 200 ℃, the central temperature of the reaction zone 14, which can be borne by the lamp wall 13, is increased to above 10000 ℃, and then the raw material gases SiCl4, SiF4 and the dopant generate vitrified SiO after passing through the reaction zone 142。
In one embodiment, the S1 and S2 may occur simultaneously.
The utility model provides a plasma blowtorch 100, the structure of 13 reducing of lamp wall to in the condition of same gas flux, increased the gas flow rate, improved plasma's energy density, reduce the powder and be in lamp wall 13 adheres to. The low temperature state of the wall of the water cooling assembly 30 ensures the performance of the wall 13, prolongs the service life and reduces the use cost.
The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not limited, and although the embodiments of the present invention have been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of the embodiments of the present invention may be made without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A plasma torch characterized by: plasma blowtorch includes body, nozzle assembly, water-cooling subassembly and ignition assembly, the nozzle assembly install in this is internal, the water-cooling subassembly part install in this is external, ignition assembly is used for arousing the plasma gas, the body includes input, output and lamp wall input and output set up relatively in the body both ends, the lamp wall by the output forms to the input is sunken, the lamp wall has the internal diameter to follow the output to the structure that the direction of input shrinks gradually.
2. The plasma torch according to claim 1, wherein: one end of the spray pipe assembly penetrates through the input end and is communicated with the lamp wall.
3. The plasma torch according to claim 1, wherein: the water cooling assembly comprises a first water cooling assembly and a second water cooling assembly which are communicated with each other, the first water cooling assembly is installed between the spray pipe assembly and the body, and the second water cooling assembly is installed outside the body.
4. The plasma torch according to claim 3, wherein: one end of the first water cooling assembly penetrates through the input end, and the other end of the first water cooling assembly wraps the lamp wall.
5. The plasma torch according to claim 3, wherein: the second water cooling assembly is arranged outside the body corresponding to the lamp wall in a surrounding mode.
6. The plasma torch according to claim 3, wherein: the spray pipe assembly comprises a first spray pipe and a second spray pipe, the first spray pipe and the second spray pipe are coaxially arranged, and the second spray pipe is installed outside the first spray pipe.
7. The plasma torch according to claim 6, wherein: the first water cooling assembly comprises an inner pipe and an outer pipe, the inner pipe and the outer pipe are coaxial with the second spray pipe, the inner pipe is installed outside the second spray pipe, the outer pipe is installed outside the inner pipe, and two ends of the second water cooling assembly are respectively communicated with the outer pipe and the inner pipe.
8. The plasma torch according to claim 6, wherein: the first spray pipe and the second spray pipe are arranged in parallel and respectively penetrate through the input end to be communicated with the lamp wall.
9. The plasma torch according to claim 1, wherein: the lamp wall comprises a tubular part and a diameter-variable part which are connected with each other, one end of the tubular part is communicated with the output end, and the other end of the tubular part is connected with the diameter-variable part.
10. The plasma torch according to claim 9, wherein: the inner diameter of the diameter-variable portion gradually shrinks along the direction from the output end to the input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920590912.7U CN210435524U (en) | 2019-04-26 | 2019-04-26 | Plasma torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920590912.7U CN210435524U (en) | 2019-04-26 | 2019-04-26 | Plasma torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210435524U true CN210435524U (en) | 2020-05-01 |
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ID=70401422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920590912.7U Active CN210435524U (en) | 2019-04-26 | 2019-04-26 | Plasma torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210435524U (en) |
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2019
- 2019-04-26 CN CN201920590912.7U patent/CN210435524U/en active Active
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