CN114143950A - Oxygen flame composite plasma torch - Google Patents
Oxygen flame composite plasma torch Download PDFInfo
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- CN114143950A CN114143950A CN202111355023.0A CN202111355023A CN114143950A CN 114143950 A CN114143950 A CN 114143950A CN 202111355023 A CN202111355023 A CN 202111355023A CN 114143950 A CN114143950 A CN 114143950A
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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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- 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
- H05H1/28—Cooling arrangements
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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
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
Abstract
The invention provides an oxygen flame composite plasma torch, and relates to the technical field of plasma torches. The composite plasma torch comprises a metal shell and a torch main body arranged in the metal shell, wherein the torch main body is provided with a multiphase electrode assembly and a conveying pipe used for conveying fuel and combustion-supporting gas, the conveying pipe is provided with an extension pipe close to the multiphase electrode assembly, and the free end of the extension pipe penetrates through the multiphase electrode assembly. The invention aims to provide an oxygen flame composite plasma torch which can effectively improve the combustion efficiency, reduce the volume of equipment under the same power and improve the running reliability of the equipment.
Description
Technical Field
The invention relates to the technical field of plasma torches, in particular to an oxygen flame composite plasma torch.
Background
The industrial large burner (torch) is mainly applied to the aspects of industrial heating furnaces, metallurgical smelting equipment, various boilers, large-scale ignition special industries and the like. The power of a single branch generally exceeds 1000KW (1MW) or more, and sometimes even exceeds 10MW or more. For such combustion devices, a single fuel, either oil or gas, is typically used. The main combustion flame temperature is typically below 1900 ℃. In order to raise the flame combustion temperature, oxygen-enriched gas must be used instead of air, but it is difficult to exceed 2200 ℃. In order to improve the combustion efficiency, reduce the equipment volume and improve the equipment operation reliability, a flame burner, especially a super-high power (referring to megawatt level) burner, with the temperature of more than 2500-5000 ℃ is urgently needed.
In order to improve the flame temperature of fuel oil and gas, people gradually consider the utilization of a plasma combustion-supporting technology, for example, in the aspect of fuel oil of an aircraft engine, a plasma arc auxiliary fuel oil excitation technology appears, but most of the technology utilizes a direct current sliding arc technology, so that not only is the requirement for a large-scale combustor that a power supply voltage transformation system is high in cost and low in efficiency and difficult to realize large-scale combustion, but also ablation or burning-through of a cathode and an anode is easily caused, so that only an ignition or ignition effect can be achieved in engineering application, and long-term high-power application of actual operation is difficult to form; once the plasma torch at the present stage is applied to the torch with the ultra-high power, the limitation still exists, the gas fuel flame of the plasma torch surrounds the electrode, the electrode cooling water is easy to take away a lot of unnecessary lost heat, and the heating efficiency also has a space for improving.
In summary, we propose an oxygen flame composite plasma torch design to solve the above problems.
Disclosure of Invention
The invention aims to provide an oxygen flame composite plasma torch, which can reduce the absorption of cooling water to effective heat, improve the combustion efficiency, and reduce the equipment volume and the equipment operation reliability under the same power.
The embodiment of the invention is realized by the following steps:
an oxygen flame composite plasma torch comprises a metal shell and a torch main body arranged in the metal shell, wherein the torch main body is provided with a multiphase electrode assembly and a conveying pipe for synchronously conveying fuel and combustion-supporting gas, the conveying pipe is provided with an extension pipe close to the multiphase electrode assembly, and the free end of the extension pipe penetrates through the multiphase electrode assembly.
The addition of the multiphase electrode assembly discards the original direct current arc and changes the original direct current arc into a multiphase sliding plasma arc powered by a multiphase alternating current power supply so as to ionize the fuel gas; meanwhile, the extension pipe is added, so that the gas or fuel is directly sprayed and burnt beyond the position of the electrode, the flame can not be directly burnt on the electrode, the purpose of burning outside the torch is realized, the service life of the electrode is prolonged, the heat loss of the water-cooling electrode is reduced, the loss of cooling water on the torch main body to effective heat is also reduced, and the realization of the ultra-high power burner is facilitated.
In some embodiments of the invention, the multi-phase electrode assembly includes a plurality of electrodes and a multi-phase power source, the number of phases of the multi-phase power source having a value equal to the number of the electrodes.
The embodiment of the invention improves the electrodes into multiple phases such as 3-24 phases, adopts 3-24 electrodes, has the frequency of 50-5000Hz, has no arc breaking phenomenon, effectively enlarges the plasma arc area, facilitates the ionization of fuel gas or fuel oil in the ignition or diffusion process, effectively improves the combustion efficiency, and realizes the long-term, efficient and stable operation of the plasma torch under high power.
In some embodiments of the invention, one end of the electrode is detachably disposed on the metal housing.
The electrode is connected with the metal shell in a threaded manner, the metal shell is provided with a ceramic base, electrode holes are uniformly distributed on the periphery of the ceramic base and the like, the free end of the electrode penetrates through the electrode holes, the electrode is locked on the ceramic base by using a ceramic nut, insulating ceramic is a new material, the main raw material of the insulating ceramic is alumina, and the insulating ceramic plays a great role in the installation of various integrated circuits.
In some embodiments of the invention, the metal housing is provided with a positioning ceramic plate for positioning the electrode.
The positioning ceramic plate plays a role in supporting the electrode, the fixing piece at the joint of the other end of the electrode is relieved from tension, and meanwhile, the mounting position of the electrode is further fixed by the aid of the positioning ceramic plate, so that the electrode is more convenient to mount and maintain in follow-up processes.
In some embodiments of the invention, the free ends of a plurality of the electrodes are each of a curved arcuate configuration.
The electrode with the bent arc structure forms a plasma area in a bulk shape under the action of airflow, the plasma area is effectively enlarged, ignition is high-temperature ignition due to the design mode, poor fuel is easier to uniformly ignite, and the overall power of the plasma torch is further improved.
In some embodiments of the present invention, the diameter of the extension pipe is smaller than that of the delivery pipe.
The caliber of the extension tube is smaller than that of the delivery tube, so that the flowing caliber of the fuel is thinned after entering, the injection speed is increased, the jet flow is lengthened, and the extension tube is additionally arranged in a plasma area of the multi-phase electrode assembly, namely, the jet flow directly acts on an arc plasma area, thereby being more convenient for ionization.
In some embodiments of the present invention, the delivery pipe includes a gas pipe, the gas pipe is sleeved with a combustion-supporting cylinder, an air inlet is arranged at an annular side of the combustion-supporting cylinder, a plurality of air holes are arranged at a side of the combustion-supporting cylinder close to the extension pipe, and the plurality of air holes are arranged in a circular ring shape.
Combustion-supporting gas is supported through a plurality of gas holes after passing through the gas inlet, the axis of the gas hole and the axis of the metal shell form an inclined included angle, the plurality of gas holes are arranged in a circular shape, and the circular arrangement of the plurality of gas holes can be arranged according to actual conditions so as to increase the combustion-supporting effect.
In some embodiments of the present invention, the metal housing is provided with a first combustion supporting cavity, a fuel cavity and a second combustion supporting cavity from an inner layer to an outer layer, the metal housing is provided with a main fuel port and a jet port communicated with the fuel cavity, the metal housing is provided with a first combustion supporting port and a first jet port communicated with the first combustion supporting cavity, and the metal housing is provided with a second combustion supporting port and a second jet port communicated with the second combustion supporting cavity.
The same combustion-supporting materials can be used in the first combustion-supporting cavity and the second combustion-supporting cavity, and the unused combustion-supporting materials can also be used, namely the combustion-supporting materials in the second combustion-supporting cavity can adopt inferior combustion-supporting materials, and due to the fact that the temperature of the front end is too high, the inferior combustion-supporting materials can meet the combustion-supporting requirements, meanwhile, the composition ratio of the main fuel gas to the primary combustion-supporting gas and the secondary combustion-supporting gas is adjusted, and the requirements of different working conditions of flame length and flame diameter can be met; meanwhile, the function of low-nitrogen combustion can be realized.
In some embodiments of the present invention, a plurality of jet-assisting ports are provided in the metal casing, and the jet-assisting ports are communicated with the first combustion-assisting chamber, and are arranged obliquely.
The adding of the auxiliary nozzles enables workers to carry out combustion-supporting supply to an ignition region through the first combustion-supporting cavity, ignition is smooth, the auxiliary nozzles are annularly arranged, the adding of combustion-supporting gas can be more uniform, arc stabilization is convenient, and combustion-supporting effect is better achieved.
In some embodiments of the present invention, the number of the ejection ports and the number of the first air ejection ports are both plural, and the axes of the plural first air ejection ports are parallel to the axis of the metal housing.
The plurality of injection ports and the plurality of first air injection ports are arranged in an annular mode, so that combustion-supporting gas and fuel can be combusted more fully.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
1) the composite plasma torch abandons the original direct current arc by additionally arranging the multiphase electrode assembly, and changes the original direct current arc into a multiphase sliding plasma arc area powered by a multiphase alternating current power supply so as to ionize fuel gas;
2) this compound plasma torch increases the extension pipe simultaneously for gas or fuel direct injection burning surpass the electrode position, also make flame can not directly "burn to" electrode, not only electrode life-span increases, reduces water-cooling electrode heat loss, and original design burning is internal at the torch in addition, outside present torch body, the realization of the super high power of being convenient for, also reduces the cooling water in the torch main part and to effective thermal loss.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a cross-sectional view of an oxygen flame composite plasma torch according to an embodiment of the present invention;
fig. 2 is a side view of a metal housing in an oxygen flame composite plasma torch in accordance with an embodiment of the present invention;
fig. 3 is a partially enlarged view of a in fig. 2.
Icon: 1-a metal shell, 2-a ceramic nut, 3-a multiphase electrode assembly, 4-a conveying pipe, 5-an extension pipe, 6-an electrode, 7-a positioning ceramic plate, 8-a bent arc structure, 9-a gas pipe, 10-a combustion-supporting barrel, 11-an air inlet, 12-an air hole, 13-a first combustion-supporting cavity, 14-a second combustion-supporting cavity, 15-a fuel cavity, 16-a main fuel port, 17-an injection port, 18-a first combustion-supporting port, 19-a first air jet, 20-a second combustion-supporting port, 21-a second air jet and 22-an injection port.
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.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
Referring to fig. 1 to 3, an object of the present invention is to provide an oxygen flame composite plasma torch, which can reduce the absorption of cooling water to effective heat, improve combustion efficiency, and reduce the volume and operational reliability of the equipment at the same power.
An oxygen flame composite plasma torch comprises a metal shell 1 and a torch body arranged in the metal shell 1, wherein the torch body is provided with a multiphase electrode assembly 3 and a conveying pipe 4 for synchronously conveying fuel and combustion-supporting gas, the end of the conveying pipe 4, close to the multiphase electrode assembly 3, is provided with an extension pipe 5, and the free end of the extension pipe 5 penetrates through the multiphase electrode assembly 3.
The principle of the invention is as follows: in order to improve the flame temperature of fuel oil and gas, people gradually consider the utilization of a plasma combustion-supporting technology, for example, in the aspect of fuel oil of an aircraft engine, a plasma arc auxiliary fuel oil excitation technology appears, but most of the technology utilizes a direct current sliding arc technology, so that not only is the requirement for a large-scale combustor that a power supply voltage transformation system is high in cost and low in efficiency and difficult to realize large-scale combustion, but also ablation or burning-through of a cathode and an anode is easily caused, so that only an ignition or ignition effect can be achieved in engineering application, and long-term high-power application of actual operation is difficult to form. In the embodiment of the invention, the multiphase electrode assembly 3 is added, the original direct current arc is abandoned, and the multiphase sliding plasma arc powered by a multiphase alternating current power supply is changed, so that the fuel gas is ionized; meanwhile, the extension pipe 5 is added, so that the gas or fuel is directly sprayed and burnt beyond the position of the electrode 6, and the flame can not be directly burnt on the electrode 6, thereby realizing the purpose of burning outside the torch, prolonging the service life of the electrode 6, reducing the heat loss of the water-cooled electrode 6, reducing the loss of cooling water on a torch main body to effective heat, and facilitating the realization of a super-power combustor.
In the embodiment of the invention, the fuel can be fuel oil or fuel gas, the electrode 6 is provided with water cooling, the metal shell 1 is provided with a cooling cavity for water cooling, the metal shell 1 is provided with a water inlet and a water outlet which are communicated with the cooling cavity, when the plasma torch in the implementation of the invention is used, firstly, water is injected into the cooling cavity through the water inlet, then the conveying pipe 4 is started, the fuel and the combustion-supporting gas are synchronously filled, meanwhile, the multiphase electrode assembly 3 is started, after the fuel reaches the extension pipe 5, the ignition is finished under the action of the multiphase electrode assembly 3, the extension pipe 5 is additionally arranged to ensure that the fuel gas/fuel oil is directly sprayed and combusted beyond the position of the electrode 6, the flame can not directly burn to the electrode 6, the electrode 6 is free from the phenomenon of frequent burning, the service life of the electrode 6 is prolonged, and the cooling capacity of the flame and the cooling water in the electrode 6 is reduced, the loss of effective heat is also reduced; the flame surrounds the fuel gas in the multiphase sliding plasma arc area formed by the multiphase electrode 6, so that the fuel gas is ignited and ignited, the fuel gas is ionized, and the plasma arc is always accompanied with the composite combustion of the fed fuel gas, so that the plasma torch in the embodiment of the invention can be applied in high power for a long time.
In some embodiments of the present invention, the multi-phase electrode assembly 3 includes a plurality of electrodes 6 and a multi-phase power source having a number of phases equal to the number of electrodes 6.
In the above embodiment, the number of the electrodes 6 is 3-24, and the multiphase power supply electrically connected to the plurality of electrodes 6 is 50-5000Hz of multiphase (3-24 phase) power supply dedicated for plasma with steep drop characteristic. Because the alternating current is generally three-phase 50Hz, three electrodes 6 are easy to break the arc and have zero points, the embodiment of the invention improves the electrodes 6 into multiple phases such as 3-24 phases, the electrodes 6 adopt 3-24, the number of the electrodes 6 is required to be a multiple of 3, the frequency is 50-5000Hz, the arc breaking phenomenon is avoided, the plasma arc area is effectively enlarged, the ionization of gas or fuel oil in the ignition or diffusion process is facilitated, the combustion efficiency is effectively improved, and the long-term efficient and stable operation of the plasma torch under high power is realized.
In some embodiments of the present invention, one end of the electrode 6 is detachably disposed on the metal housing 1.
In the embodiment, the electrode 6 is in threaded connection with the metal shell 1, the metal shell 1 is provided with the ceramic base, the electrode 6 holes are uniformly distributed on the circumference of the ceramic base, the free end of the electrode 6 penetrates through the electrode 6 holes and then the motor is fixed on the ceramic base by using the fixing piece, the electrode 6 is locked on the ceramic base by using the ceramic nut 2, the insulating ceramic is a new material, the main raw material of the insulating ceramic is alumina and plays a great role in the installation of various integrated circuits, and the insulating ceramic is used in the embodiment of the invention because the insulating ceramic has high hardness, light weight and good wear resistance, and the maintenance and replacement times are reduced.
In some embodiments of the present invention, the metal case 1 is provided with a positioning ceramic plate 7, and the positioning ceramic plate 7 is used for positioning the electrode 6.
In the above embodiment, the positioning ceramic plate 7 plays a role of supporting the electrode 6, so that the tension applied to the fixing part at the joint of the other end of the electrode 6 is relieved, and meanwhile, the mounting position of the electrode 6 is further fixed due to the addition of the positioning ceramic plate 7, so that the subsequent mounting and maintenance are more convenient.
In some embodiments of the invention, the free ends of a plurality of the above-mentioned electrodes 6 are designed as curved arc-shaped structures 8.
In the above embodiment, the electrode 6 with the curved arc structure 8 is formed by bending the free end of the electrode 6 inwards and then expanding the free end outwards to form the bent tube-shaped or flared electrode 6, the electrode 6 with the curved arc structure 8 forms a plasma region in a bulk shape under the action of airflow, and the plasma region is also effectively amplified.
In some embodiments of the present invention, the diameter of the extension pipe 5 is smaller than that of the delivery pipe 4.
In the above embodiment, the diameter of the extension pipe 5 is smaller than that of the delivery pipe 4, so that the flowing diameter of the fuel is reduced after entering, the injection speed is increased, the jet flow is lengthened, and the extension pipe 5 is additionally arranged in the plasma region of the multi-phase electrode assembly 3, namely, the jet flow directly acts on the arc plasma region, thereby being more convenient for ionization.
In some embodiments of the present invention, the delivery pipe 4 includes a gas pipe 9, the gas pipe 9 is sleeved with a combustion-supporting cylinder 10, an air inlet 11 is disposed at a side of the combustion-supporting cylinder 10, a plurality of air holes 12 are disposed at a side of the combustion-supporting cylinder 10 close to the extension pipe 5, and the plurality of air holes 12 are arranged in a circular shape.
In the above embodiment, the combustion-supporting gas passes through the gas inlet 11 and then is used for supporting combustion through the plurality of gas holes 12, the axis of the gas hole 12 and the axis of the metal shell 1 form an inclined included angle, the plurality of gas holes 12 are arranged in a circular shape, and the circular arrangement of the plurality of gas holes 12 can be performed according to actual conditions, so that the combustion-supporting effect is increased.
In some embodiments of the present invention, the metal housing 1 is provided with a ring-shaped first combustion supporting chamber 13, a fuel chamber 15 and a second combustion supporting chamber 14 from an inner layer to an outer layer, the metal housing 1 is provided with a main fuel port 16 and a jet port 17 communicated with the fuel chamber 15, the metal housing 1 is provided with a first combustion supporting port 18 and a first jet port 19 communicated with the first combustion supporting chamber 13, and the metal housing 1 is provided with a second combustion supporting port 20 and a second jet port 21 communicated with the second combustion supporting chamber 14.
In the above embodiment, the cooling cavity is disposed at the outer side of the second combustion-supporting cavity 14, that is, the cooling cavity is disposed at the outermost side for cooling and protecting the metal shell 1, the same combustion-supporting material can be used in the first combustion-supporting cavity 13 and the second combustion-supporting cavity 14, or the unused combustion-supporting material can be used, that is, the combustion-supporting material in the second combustion-supporting cavity 14 can adopt inferior combustion-supporting material, because the temperature at the front end is too high, the inferior combustion-supporting material can also meet the combustion-supporting requirement, and meanwhile, the composition ratio of the main fuel gas to the primary combustion-supporting gas and the secondary combustion-supporting gas is adjusted, so that the working condition requirements of different flame lengths and flame diameters can be met; meanwhile, the function of low-nitrogen combustion can be realized.
In some embodiments of the present invention, a plurality of auxiliary nozzles 22 are disposed in the metal casing 1 and are communicated with the first combustion supporting chamber 13, and the auxiliary nozzles 22 are disposed in an inclined manner.
The adding of nozzle aid 22 establishes and makes the staff can carry out combustion-supporting supply to the ignition region through first combustion-supporting chamber 13, make the ignition more smooth, a plurality of nozzle aid 22 encircle the inner wall equipartition of metal casing 1, can make combustion-supporting gas's addition more even, convenient steady arc, and then the combustion-supporting effect of better completion, the axis of a plurality of nozzle aid 22 of preferred all forms the contained angle with the tangent line of the 1 inner wall cambered surface junction of metal casing that it is located, the number of degrees of its contained angle is 5 degrees-45 degrees, this design can let combustion-supporting gas's injection be and jets out inclination, increase the combustion effect.
In some embodiments of the present invention, the number of the ejection ports 17 and the number of the first air ejection ports 19 are both plural, and the axes of the plural first air ejection ports 19 are parallel to the axis of the metal shell 1.
In the above embodiment, the plurality of injection ports 17 and the plurality of first gas injection ports 19 are arranged in a ring shape, so that the combustion-supporting gas and the fuel can be more sufficiently combusted.
In summary, the present invention provides an oxygen flame composite plasma torch, which has at least the following beneficial effects: in order to improve the flame temperature of fuel oil and gas, people gradually consider the utilization of a plasma combustion-supporting technology, for example, in the aspect of fuel oil of an aircraft engine, a plasma arc auxiliary fuel oil excitation technology appears, but most of the technology utilizes a direct current sliding arc technology, so that not only is the requirement for a large-scale combustor that a power supply voltage transformation system is high in cost and low in efficiency and difficult to realize large-scale combustion, but also ablation or burning-through of a cathode and an anode is easily caused, so that only an ignition or ignition effect can be achieved in engineering application, and long-term high-power application of actual operation is difficult to form. In the embodiment of the invention, the multiphase electrode assembly 3 is added, the original direct current arc is abandoned, and the multiphase sliding plasma arc powered by a multiphase alternating current power supply is changed, so that the fuel gas is ionized; meanwhile, the extension pipe 5 is added, so that the gas or fuel is directly sprayed and combusted beyond the position of the electrode 6, and the flame can not be directly burnt on the electrode 6, thereby realizing the purpose of combustion outside the torch, prolonging the service life of the electrode 6, reducing the heat loss of the water-cooled electrode 6 and facilitating the realization of an ultra-high power combustor.
In the embodiment of the invention, the fuel can be fuel oil or fuel gas, the electrode 6 is provided with water cooling, the metal shell 1 is provided with a cooling cavity for water cooling, the metal shell 1 is provided with a water inlet and a water outlet which are communicated with the cooling cavity, when the plasma torch in the implementation of the invention is used, firstly, water is injected into the cooling cavity through the water inlet, then the conveying pipe 4 is started, the fuel and the combustion-supporting gas are synchronously filled, meanwhile, the multiphase electrode assembly 3 is started, after the fuel reaches the extension pipe 5, the ignition is finished under the action of the multiphase electrode assembly 3, the extension pipe 5 is additionally arranged to ensure that the fuel gas/fuel oil is directly sprayed and combusted beyond the position of the electrode 6, the flame can not be directly burnt to the electrode 6, the bent arc structure 8 of the electrode 6 gets rid of the phenomenon of frequent burning, the service life of the electrode is prolonged, and the cooling capacity of the flame and the cooling water in the bent arc structure 8 of the electrode 6 is reduced, the loss of effective heat is also reduced; the flame surrounds the fuel gas in the multiphase sliding plasma arc area formed by the multiphase electrode 6, so that the fuel gas is ignited and ignited, the fuel gas is ionized, and the plasma arc is always accompanied with the composite combustion of the fed fuel gas, so that the plasma torch in the embodiment of the invention can be applied in high power for a long time.
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 oxygen flame composite plasma torch is characterized by comprising a metal shell and a torch main body arranged in the metal shell, wherein the torch main body is provided with a multiphase electrode assembly and a conveying pipe for synchronously conveying fuel and combustion-supporting gas, the conveying pipe is provided with an extension pipe close to the multiphase electrode assembly, and the free end of the extension pipe penetrates through the multiphase electrode assembly.
2. An oxygen flame recombination plasma torch as claimed in claim 1 wherein the multi-phase electrode assembly comprises a plurality of electrodes and a multi-phase power supply, the number of phases of the multi-phase power supply being equal to the number of electrodes.
3. An oxygen flame composite plasma torch as claimed in claim 2 wherein one end of the electrode is removably mounted to the metal housing.
4. An oxygen flame composite plasma torch as claimed in claim 2 wherein the metal housing is provided with locating ceramic plates for locating the electrodes.
5. An oxygen flame composite plasma torch as claimed in claim 2 wherein the free ends of the electrodes are each of curved arcuate configuration.
6. An oxygen flame composite plasma torch as claimed in claim 1 wherein the extension tube has a smaller bore size than the delivery tube.
7. The oxygen-flame composite plasma torch as claimed in claim 1, wherein the delivery pipe comprises a gas pipe, the gas pipe is sleeved with a combustion-supporting cylinder, an air inlet is arranged on the annular side of the combustion-supporting cylinder, a plurality of air holes are arranged on the side of the combustion-supporting cylinder close to the extension pipe, and the air holes are arranged in an annular shape.
8. An oxygen-flame composite plasma torch as claimed in claim 7, wherein the metal housing is provided with a ring-shaped first combustion supporting chamber, a fuel chamber and a second combustion supporting chamber from an inner layer to an outer layer, the metal housing is provided with a main fuel port and a jet port communicating with the fuel chamber, the metal housing is provided with a first combustion supporting port and a first jet port communicating with the first combustion supporting chamber, and the metal housing is provided with a second combustion supporting port and a second jet port communicating with the second combustion supporting chamber.
9. The oxygen-flame composite plasma torch as claimed in claim 8, wherein the metal shell is provided with a plurality of jet-assisting ports communicated with the first combustion-assisting chamber, and the jet-assisting ports are arranged obliquely.
10. An oxygen flame composite plasma torch as claimed in claim 8 wherein the number of said jet ports and the number of said first gas ports are each plural, and the axes of the plural first gas ports are parallel to the axis of said metal housing.
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| CN202111355023.0A CN114143950A (en) | 2021-11-16 | 2021-11-16 | Oxygen flame composite plasma torch |
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| CN202111355023.0A CN114143950A (en) | 2021-11-16 | 2021-11-16 | Oxygen flame composite plasma torch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355504A (en) * | 2022-08-15 | 2022-11-18 | 浙江大学台州研究院 | Multiphase alternating current plasma torch and solid waste treatment device |
| WO2023226805A1 (en) * | 2022-05-24 | 2023-11-30 | 北京东方燕中实业发展集团有限公司 | Driving method for nuclear energy and chemical energy combined combustion of fossil fuel |
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2021
- 2021-11-16 CN CN202111355023.0A patent/CN114143950A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226805A1 (en) * | 2022-05-24 | 2023-11-30 | 北京东方燕中实业发展集团有限公司 | Driving method for nuclear energy and chemical energy combined combustion of fossil fuel |
| DE112023000013T5 (en) | 2022-05-24 | 2024-01-18 | Beijing Oriental Yanzhong Industrial Development Group Co., Ltd. | The drive process for the combined combustion of nuclear energy and chemical energy from fossil fuels |
| CN115355504A (en) * | 2022-08-15 | 2022-11-18 | 浙江大学台州研究院 | Multiphase alternating current plasma torch and solid waste treatment device |
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