CN115279005B - Cathode head for plasma device - Google Patents
Cathode head for plasma device Download PDFInfo
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- CN115279005B CN115279005B CN202211053018.9A CN202211053018A CN115279005B CN 115279005 B CN115279005 B CN 115279005B CN 202211053018 A CN202211053018 A CN 202211053018A CN 115279005 B CN115279005 B CN 115279005B
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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
-
- 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
-
- 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
- H05H1/3421—Transferred arc or pilot arc mode
-
- 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
- H05H1/3478—Geometrical details
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Geometry (AREA)
- Plasma Technology (AREA)
Abstract
本发明属于等离子炬技术领域，涉及一种用于等离子装置的阴极头，包括阴极头主体，其包括由左至右依次连接的引弧发射体、中间圆柱体、尾部圆柱体及用以与等离子炬水冷管相抵接的连接部；引弧发射体采用钨或钨系合金制成，且由引弧圆柱体和引弧球缺一体成型，引弧圆柱体的一端与中间圆柱体的一端固定；中间圆柱体内开设有螺纹孔，螺纹孔的孔壁所在直线与竖直方向存在夹角γ，且所述夹角γ的度数为90°～120°；等离子炬水冷管的连接端设置倾角ε，倾角ε所在的斜面与螺纹孔相抵接，实现所述阴极头主体与等离子炬水冷管硬密封。本发明通过对阴极头结构的改进，在具备压缩电弧作用的同时具有良好的水冷效果，延长了阴极头的使用寿命。
The present invention belongs to the technical field of plasma torches, and relates to a cathode head for a plasma device, comprising a cathode head body, which comprises an arc-starting emitter, an intermediate cylinder, a tail cylinder and a connection part for abutting against a plasma torch water-cooling pipe connected in sequence from left to right; the arc-starting emitter is made of tungsten or a tungsten alloy, and is formed integrally by an arc-starting cylinder and an arc-starting spherical segment, and one end of the arc-starting cylinder is fixed to one end of the intermediate cylinder; a threaded hole is provided in the intermediate cylinder, and an angle γ exists between the straight line where the hole wall of the threaded hole is located and the vertical direction, and the degree of the angle γ is 90° to 120°; an inclination angle ε is set at the connection end of the plasma torch water-cooling pipe, and the inclined surface where the inclination angle ε is located abuts against the threaded hole, so as to realize the hard sealing between the cathode head body and the plasma torch water-cooling pipe. The present invention improves the cathode head structure, has a good water cooling effect while having a compression arc function, and prolongs the service life of the cathode head.
Description
Technical Field
The invention belongs to the technical field of plasma torches, and relates to a cathode head for a plasma device.
Background
Plasma torches are devices that generate high temperature plasma and have found wide application in high temperature heat sources. The structure of the device comprises a cathode assembly, an anode assembly, a water cooling system, a gas system and the like, wherein a nozzle center hole at the front end of a cathode head is a plasma arc channel, and internal high-temperature plasma transfers heat to the nozzle and internal water flow of the cathode head by means of water cooling of the inner wall of the anode and water cooling and heat conduction of the cathode head.
In the structure, the cathode head in the cathode part is a core part for striking an arc, and the working environment is relatively bad, so that the cathode head becomes a vulnerable part in the whole system structure, and the service life of the cathode head directly influences the working efficiency and the running cost of the plasma torch. The existing cathode head structure can compress the electric arc to a certain extent, but is easy to discharge in a non-discharge area during high-frequency arc striking, so that ablation is caused, the service life of the cathode head is reduced, and cooling water is easy to generate vortex, heat is not taken away timely, and the water cooling effect is reduced.
Therefore, the invention provides a novel cathode head for a plasma device, so as to solve the technical problems.
Disclosure of Invention
The object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a cathode head for a plasma device.
The invention aims at solving the problems by the following technical scheme:
The cathode head for the plasma device comprises a cathode head main body, wherein the cathode head main body comprises an arc striking emitter, a middle cylinder, a tail cylinder and a connecting part, wherein the arc striking emitter, the middle cylinder, the tail cylinder and the connecting part are sequentially connected from left to right, the connecting part is used for being abutted against a plasma torch water-cooled tube, the arc striking emitter is made of tungsten or tungsten alloy and is integrally formed by the arc striking cylinder and an arc striking bulb, one end of the arc striking cylinder is fixed with one end of the middle cylinder, a threaded hole is formed in the middle cylinder, an included angle gamma is formed between a straight line where the hole wall of the threaded hole is located and the vertical direction, the degree of the included angle gamma is 90-120 degrees, an inclined angle epsilon is arranged at the connecting end of the plasma torch water-cooled tube, and an inclined plane where the inclined angle epsilon is located is abutted against the threaded hole, so that the cathode head main body and the plasma torch water-cooled tube are sealed firmly.
Further, one end of the arc striking cylinder is welded and fixed with one end of the middle cylinder.
Further, a transition angle alpha is formed between the arc striking cylinder and the middle cylinder, and the degree of the transition angle alpha is 60-90 degrees.
Further, the middle cylinder is provided with the joint structure of convenient dismouting with the one end outside that afterbody cylinder is connected.
Further, the clamping structure is an outer hexagonal structure.
Further, a transition angle delta exists between the left end of the outer hexagonal structure and the middle cylinder, and the degree of the transition chamfer delta is 110-150 degrees.
Further, the left end face of the tail cylinder is provided with a transition angle beta, and the degree of the transition angle beta is 30-60 degrees.
Further, the degree of the inclination angle epsilon is 30-60 degrees.
Further, the diameter of the striking arc emitter is 8-18 mm.
Further, the middle cylinder is made of pure copper or copper-based alloy, and the diameter of the middle cylinder is 20-30 mm.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects that the structure of the cathode head is improved, specifically, the arc striking emitter is formed by integrating the arc striking cylinder and the arc striking bulb, and is made of tungsten or tungsten alloy, and the outer surface of the arc striking emitter is not easy to burn out of the pit by arc flame flow in working because the tungsten alloy has extremely high melting point and excellent high temperature resistance, so that the service life of the cathode head is prolonged. Meanwhile, the design of the threaded hole reduces the materials used, reduces the heat accumulation in the cathode head, increases the heat radiating area and improves the cooling effect, and the included angle gamma between the straight line of the hole wall of the threaded hole and the vertical direction is matched with the inclined angle epsilon of the connecting end of the plasma torch water cooling pipe, the inclined plane of the inclined angle epsilon is abutted with the threaded hole, so that the cathode head main body and the plasma torch water cooling pipe are sealed firmly, and the sealing requirement under a high water pressure environment can be met.
In addition, the outer hexagonal structure is matched with a spanner to facilitate the disassembly and the assembly of the cathode head, the middle cylinder is made of pure copper or copper-based alloy, heat accumulated in the cathode head can be effectively dissipated, the service life of the cathode head is prolonged, and the plasma jet is facilitated to be generated and concentrated on the cathode head through the mutual matching of a transition angle alpha between the arc striking cylinder and the middle cylinder, a transition angle beta arranged on the left end face of the tail cylinder and a transition angle delta between the left end of the outer hexagonal structure and the middle cylinder.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate principles of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is an external structural view of a cathode head for a plasma apparatus according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
Fig. 3 is a schematic view showing a structure of a cathode head and a nozzle for a plasma apparatus according to the present invention.
The plasma torch water-cooling tube comprises a striking arc emitter 1, a middle cylinder, a tail cylinder 3, a connecting part 4, a threaded hole 5, a plasma torch water-cooling tube 6, an outer hexagonal structure 7, a transition angle between the alpha striking arc cylinder and the middle cylinder, a transition angle arranged on the left end face of the beta tail cylinder, an included angle between a straight line where the hole wall of the gamma threaded hole is positioned and the vertical direction, a transition angle between the left end of the delta outer hexagonal structure and the middle cylinder, epsilon and an inclined angle.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of devices that are consistent with aspects of the invention that are set forth in the following claims.
The present invention will be described in further detail below with reference to the drawings and examples for better understanding of the technical solutions of the present invention to those skilled in the art.
Referring to fig. 1-3, the invention provides a cathode head for a plasma device, which comprises a cathode head main body, wherein the cathode head main body comprises an arc striking emitter 1, a middle cylinder 2, a tail cylinder 3 and a connecting part 4 used for being abutted against a plasma torch water cooling pipe 6, which are sequentially connected from left to right, the arc striking emitter 1 is made of tungsten or tungsten alloy and is integrally formed by an arc striking cylinder and an arc striking bulb, one end of the arc striking cylinder is fixed with one end of the middle cylinder 2, a threaded hole 5 is formed in the middle cylinder 2, an included angle gamma exists between the straight line of the hole wall of the threaded hole 5 and the vertical direction, the degree of the included angle gamma is 90-120 degrees, the connecting end of the plasma torch water cooling pipe 6 is provided with an inclined angle epsilon, and the inclined plane of the inclined angle epsilon is abutted against the threaded hole 5, so that the cathode head main body and the plasma torch water cooling pipe 6 are hard sealed.
Further, one end of the arc striking cylinder is welded and fixed with one end of the middle cylinder 2.
Further, a transition angle alpha exists between the arc striking cylinder and the middle cylinder 2, and the degree of the transition angle alpha is 60-90 degrees.
Further, the outer side of one end of the middle cylinder 2 connected with the tail cylinder 3 is provided with a clamping structure convenient to assemble and disassemble.
Further, the clamping structure is an outer hexagonal structure 7.
Further, a transition angle delta exists between the left end of the outer hexagonal structure 7 and the middle cylinder 2, and the degree of the transition chamfer delta is 110-150 degrees.
Further, the left end face of the tail cylinder 3 is provided with a transition angle beta, and the degree of the transition angle beta is 30-60 degrees.
Further, the degree of the inclination angle epsilon is 30-60 degrees.
Further, the diameter of the striking arc emitter 1 is 8-18 mm.
Further, the middle cylinder 2 is made of pure copper or copper-based alloy, and the diameter of the middle cylinder is 20-30 mm.
In summary, the arc striking emitter 1 is integrally formed by the arc striking cylinder and the arc striking bulb, and the arc striking emitter 1 is made of tungsten or tungsten alloy, and the outer surface of the arc striking emitter 1 is not easy to burn pits by arc flame flow when in operation because the tungsten alloy has extremely high melting point and extremely good high temperature resistance, thereby prolonging the service life of the cathode. Meanwhile, the design of the threaded hole 5 reduces the materials used, reduces the heat accumulation in the cathode head, increases the heat dissipation area and improves the cooling effect, and the included angle gamma between the straight line where the hole wall of the threaded hole 5 is positioned and the vertical direction is matched with the inclination angle epsilon of the connecting end of the plasma torch water cooling tube 6, the inclined plane where the inclination angle epsilon is positioned is abutted with the threaded hole 5, so that the metal hard seal of the cathode head main body and the plasma torch water cooling tube 6 is realized, and the sealing requirement under the high water pressure environment can be met.
In addition, the outer hexagonal structure 7 is matched with a spanner to facilitate the disassembly and the assembly of the cathode head, the middle cylinder 2 is made of pure copper or copper-based alloy, heat accumulated in the cathode head can be effectively dissipated, the service life of the cathode head is prolonged, and the generation and the concentration of plasma jet on the cathode head are facilitated through the mutual matching of a transition angle alpha between the arc striking cylinder 1 and the middle cylinder 2, a transition angle beta arranged on the left end face of the tail cylinder 3 and a transition angle delta between the left end of the outer hexagonal structure 7 and the middle cylinder 2.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It will be understood that the invention is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211053018.9A CN115279005B (en) | 2022-08-31 | 2022-08-31 | Cathode head for plasma device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211053018.9A CN115279005B (en) | 2022-08-31 | 2022-08-31 | Cathode head for plasma device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115279005A CN115279005A (en) | 2022-11-01 |
| CN115279005B true CN115279005B (en) | 2025-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211053018.9A Active CN115279005B (en) | 2022-08-31 | 2022-08-31 | Cathode head for plasma device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN218103618U (en) * | 2022-08-31 | 2022-12-20 | 西安聚能医工科技有限公司 | Cathode head for plasma torch |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH607540A5 (en) * | 1976-02-16 | 1978-12-29 | Niklaus Mueller | |
| DE3642375A1 (en) * | 1986-12-11 | 1988-06-23 | Castolin Sa | METHOD FOR APPLYING AN INTERNAL COATING INTO TUBES OD. DGL. CAVITY NARROW CROSS SECTION AND PLASMA SPLASH BURNER DAFUER |
| RU2225084C1 (en) * | 2003-04-25 | 2004-02-27 | Суслов Виктор Иванович | Plasmatron |
| WO2008038886A1 (en) * | 2006-09-28 | 2008-04-03 | Korea Pionics Co., Ltd. | Plasma arc torch and scrubber using the same |
| US10858296B1 (en) * | 2012-06-27 | 2020-12-08 | James J. Myrick | Energetics, compositions, manufacture and applications |
| CN203504872U (en) * | 2013-10-25 | 2014-03-26 | 成都四态科技有限责任公司 | Long life plasma generator anode |
| KR101732034B1 (en) * | 2015-10-21 | 2017-05-02 | 주식회사 프라즈마태우 | The plasma cutting torch |
| RU2614533C1 (en) * | 2016-02-15 | 2017-03-28 | Публичное акционерное общество "Электромеханика" | Electric-arc plasmatron |
| CN108672963A (en) * | 2018-05-31 | 2018-10-19 | 上海航天设备制造总厂有限公司 | The welder and method of electric arc heat source and the coaxial In-situ reaction of frictional heat source |
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- 2022-08-31 CN CN202211053018.9A patent/CN115279005B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN218103618U (en) * | 2022-08-31 | 2022-12-20 | 西安聚能医工科技有限公司 | Cathode head for plasma torch |
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| CN115279005A (en) | 2022-11-01 |
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