CN113115505A - Self-arc-striking voltage-reducing thermal plasma beam generating device - Google Patents

Self-arc-striking voltage-reducing thermal plasma beam generating device Download PDF

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Publication number
CN113115505A
CN113115505A CN202110371347.7A CN202110371347A CN113115505A CN 113115505 A CN113115505 A CN 113115505A CN 202110371347 A CN202110371347 A CN 202110371347A CN 113115505 A CN113115505 A CN 113115505A
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CN
China
Prior art keywords
arc
wall
generating device
thermal plasma
plasma beam
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CN202110371347.7A
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Chinese (zh)
Inventor
陈大龙
谢帅
陈伟
施新华
陆金华
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NANTONG SANXIN PLASTICS EQUIPMENT TECHNOLOGY CO LTD
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NANTONG SANXIN PLASTICS EQUIPMENT TECHNOLOGY CO LTD
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Priority to CN202110371347.7A priority Critical patent/CN113115505A/en
Publication of CN113115505A publication Critical patent/CN113115505A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/34Details, e.g. electrodes, nozzles
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Plasma Technology (AREA)

Abstract

The invention provides a self-arc-striking voltage-reducing thermal plasma beam generating device which comprises an outer wall, an anode and at least two cathodes, wherein the outer wall is arranged in a surrounding mode to form a combustion chamber cavity, the anode is fixed to the outer wall, the at least two cathodes are fixed to the outer wall, the anode comprises a fixing piece and an arc striking rod extending upwards or downwards from the fixing piece, the fixing piece and the cathodes penetrate through the outer wall, the arc striking rod is arranged in the combustion chamber cavity, and the distance from the cathodes to the fixing piece is smaller than the distance from one end, far away from the fixing piece, of the arc striking rod. The self-arc-striking voltage-reducing thermal plasma beam generating device provided by the invention has the advantages that the arc can be increased and the stability can be improved by corresponding at least two cathodes to one anode. The self-arc-striking voltage-reduction thermal plasma beam generating device is simple in equipment, large in generated electric arc, stable in work, capable of working by using lower voltage and longer in service life.

Description

Self-arc-striking voltage-reducing thermal plasma beam generating device
Technical Field
The invention relates to a self-arc-striking voltage-reduction thermal plasma beam generating device.
Background
At present, the generating device of domestic and foreign hot plasma roughly divide into two kinds, one kind is that one end is single anode, the other end is the structure of single cathode, breakdown between the two poles of the earth of this kind of discharge structure is difficult usually, generally can only adopt the mode of operation of high voltage structure (being 1mm/1kv usually), if need the great plasma arc of area under this mode of operation, the equipment volume that the power needs then can be very big, what the inhomogeneous electric field in the middle of the while produced under breakdown voltage is single hot plasma arc, the stability of this electric arc is relatively poor: the other is a structure with a single cathode at the central axis and a grounded metal tube anode at the outer sleeve, the power required by the discharge of the structure is usually lower, and a working mode of low voltage and large current can be basically adopted. Because the existing main-stream single-electrode generator has certain disadvantages and few technologies for treating the tail gas generated by the generator exist, the thermal plasma industry urgently needs a generation mode of the self-ignition arc-reduced voltage common-pole multi-arc thermal plasma beam and a method for solving the tail gas.
In view of the above, there is a need for an improved thermal plasma beam generating device to solve the above problems.
Disclosure of Invention
The invention aims to provide a self-ignition voltage reduction thermal plasma generating device, which solves the problems that the existing thermal plasma generating device needs a large amount of equipment power supply and is easy to burn.
In order to achieve the purpose, the invention provides a self-arc-striking voltage-reducing thermal plasma beam generating device which comprises an outer wall, an anode and at least two cathodes, wherein the outer wall is arranged in a surrounding mode to form a combustion chamber cavity, the anode is fixed to the outer wall, the at least two cathodes are fixed to the outer wall, the anode comprises a fixing piece and an arc striking rod extending upwards or downwards from the fixing piece, the fixing piece and the cathodes penetrate through the outer wall, the arc striking rod is arranged in the combustion chamber cavity, and the distance from the cathodes to the fixing piece is smaller than the distance from one end, far away from the fixing piece, of the arc striking rod.
As a further improvement of the invention, the height of at least two of the cathodes in the vertical direction is the same as the height of the fixture.
As a further improvement of the invention, the end of the arc ignition rod remote from the fixing piece is equidistant from at least two cathodes.
As a further improvement of the invention, the arc striking rod is obliquely arranged, and the distance from one end of the arc striking rod, which is far away from the fixing piece, to the outer wall is smaller than the distance from one end of the arc striking rod, which is connected with the fixing piece, to the outer wall.
As a further development of the invention, the starting rods extend obliquely away from at least two of the cathodes.
As a further improvement of the invention, the combustion chamber cavity formed by the surrounding of the outer wall is cylindrical.
As a further improvement of the invention, a hemispherical top cap is arranged at one end of the arc ignition rod, which is far away from the fixing piece, and at one end of the cathode, which is arranged in the combustion chamber.
As a further improvement of the present invention, the cathode includes a first fixed end disposed outside the outer wall, a discharge region disposed inside the outer wall, and a first retainer ring disposed between the first fixed end and the discharge region, wherein the diameter of the first retainer ring is larger than that of the first fixed end, and the first retainer ring is disposed inside the outer wall to abut against the outer wall, and the discharge region is coated with a discharge metal.
As a further improvement of the present invention, the fixing member includes a second fixing end disposed outside the outer wall, a connecting end disposed inside the outer wall for connecting with the arc striking rod, and a second retaining ring disposed between the second fixing end and the connecting end, and the diameter of the second retaining ring is larger than that of the second fixing end, and the second retaining ring is disposed inside the outer wall to abut against the outer wall.
As a further improvement of the invention, the second baffle ring is provided with a limiting block which is vertically arranged towards the outer wall so as to be clamped with the outer wall.
The invention has the beneficial effects that: the self-arc-striking voltage-reducing thermal plasma beam generating device provided by the invention has the advantages that the arc can be increased and the stability can be improved by corresponding at least two cathodes to one anode. The self-arc-striking voltage-reduction thermal plasma beam generating device is simple in equipment, large in generated electric arc, stable in work, capable of working by using lower voltage and longer in service life.
Drawings
FIG. 1 is a schematic structural view of a self-igniting step-down thermal plasma beam generating device of the present invention;
fig. 2 is a schematic structural view of an anode and a cathode of the self-ignition step-down thermal plasma beam generating device of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 2, the self-ignition reduced-voltage thermal plasma beam generating device 100 of the present invention includes an outer wall 1 enclosing to form a combustion chamber cavity, an anode 3 fixed to the outer wall 1, and at least two cathodes 2 fixed to the outer wall 1.
In this embodiment, the combustion chamber cavity surrounded by the outer wall 1 is cylindrical, and the outer wall 1 is made of quartz material. Of course, in other embodiments, the materials and specific shapes may be modified.
Each anode 3 corresponds to at least two cathodes 2, and in the present embodiment, the number of the cathodes 2 is two. Each anode 3 after being equally divided is correspondingly provided with two or more than two cathodes 2, so that the current of the load of a single cathode 2 can be greatly reduced, and a plurality of sections of electric arcs can jointly act on the same point of the anode 3 to form thermal plasma beams, the effect of the thermal plasma beams is several times that of common electric arcs, and the problems that a single-electrode electric arc is too small and unstable are solved; meanwhile, the structure of the multiple cathodes 2 enables the current of the whole discharging system to be dispersed, so that the service lives of the cathodes 2 and the anodes 3 are longer, and because the thermal plasma beams with large range and high temperature can be generated without high voltage and current, the working efficiency is higher, and the power factor is larger; meanwhile, the multi-arc joint work enables the work of the electric arc to be more stable, the electrode cannot be ablated, and the method is particularly suitable for thermal plasma waste gas treatment, molten metal, surface cleaning, spraying and welding.
The cathode 2 comprises a first fixed end 21 arranged outside the outer wall 1, a discharge area 22 arranged inside the outer wall 1, and a first retainer ring 23 arranged between the first fixed end 21 and the discharge area 22.
Be equipped with the external screw thread on the first stiff end 21 in order to incite somebody to action negative pole 2 is fixed on the outer wall 1, the external screw thread can the connecting wire simultaneously to connect external power source and give negative pole 2 power supply.
The discharge region 22 is coated with a discharge metal.
The first retainer ring 23 has a diameter larger than that of the first fixed end 21, and is disposed inside the outer wall 1 to abut against the outer wall 1 to define the position of the cathode 2.
The anode 3 includes a fixing member 31, and an arc ignition rod 32 extending upward or downward from the fixing member 31. In the embodiment, the arc ignition bar 32 is disposed upward.
The fixing piece 31 and the cathode 2 penetrate through the outer wall 1, the arc ignition rod 32 is arranged in the combustion chamber cavity, and the distance from the cathode 2 to the fixing piece 31 is smaller than the distance from the arc ignition rod 32 to one end of the fixing piece 31.
The height of at least two cathodes 2 in the vertical direction is the same as the height of the fixing member 31, and the distance between one end of the arc ignition rod 32 far away from the fixing member 31 and at least two cathodes 2 is equal. The arrangement is such that the end of the ignition bar 32 remote from the holder 31 is at a greater distance from the cathode 2 than the end of the ignition bar 32 close to the holder 31.
The end of the arc ignition rod 32 close to the fixed member 31 is defined as an arc ignition end 321, the end of the arc ignition rod 32 far from the fixed member 31 is defined as a discharge end 322, and the discharge end 322 is coated with discharge metal. The distance of the discharge end 322 from the discharge area 22 of the cathode 2 is larger or much larger than the distance of the arc-starting end 321 from the cathode 2, which may be several tens of times the distance of the arc-starting end 321 from the discharge area 22 of the cathode 2. Because the distance between the arc striking end 321 and the discharge regions 22 of at least two cathodes 2 is very short, the arc striking can be realized only by very low voltage, the purpose of self-arc striking is achieved, ultrahigh voltage does not need to be arranged, and the cost is reduced. After an arc is generated through the arc-striking end 321 and the discharge area 22 of the cathode 2, the arc is immediately transferred to the connection between the discharge end 322 of the anode 3 and the discharge area 22 of the cathode 2, and because the distance between the discharge end 322 of the anode 3 and the discharge area 22 of the cathode 2 is dozens of times of the distance between the arc-striking end 321 and the discharge area 22 of the cathode 2, the thermal plasma beam suddenly changes from a small short arc at the arc-striking end 321 to a large long arc, namely, a working thermal plasma beam with a large range and a high temperature, which is required by people, and is formed by the common action of at least two cathodes 2 on the same point of the discharge end 322 of the anode 3, the arc can change to be larger and the temperature to be higher on the original basis.
The arc ignition rod 32 is obliquely arranged, and the distance from one end, far away from the fixing piece 31, of the arc ignition rod 32 to the outer wall 1 is smaller than the distance from one end, connected with the fixing piece 31, of the arc ignition rod 32 to the outer wall 1. Further, the arc ignition rod 32 extends obliquely away from at least two of the cathodes 2. So set up, can increase the distance of the discharge end 322 of the starting rod 32 from the discharge area 22 of the cathode 2 on the one hand, the radial width of the electric arc is increased to another side for the electric arc can fill up the combustion chamber cavity as far as possible.
The fixing member 31 includes a second fixing end 311 disposed outside the outer wall 1, a connecting end 312 disposed inside the outer wall 1 for connecting with the arc striking rod 32, and a second retaining ring 313 disposed between the second fixing end 311 and the connecting end 312.
The second fixing end 311 is used to connect a heat sink, and has an external thread thereon for fixing with the outer wall 1 and connecting a wire and an external power source.
The second retainer ring 313 is provided with a limit block 314 vertically arranged towards the outer wall 1 so as to be clamped with the outer wall 1. So that the arc ignition rod 32 is prevented from rotating about the axis of the fixing member 31.
The diameter of the second retaining ring 313 is larger than that of the second fixing end 311, and the second retaining ring is disposed on the inner side of the outer wall 1 to abut against the outer wall 1.
And a hemispherical top cap is arranged at one end of the arc ignition rod 32, which is far away from the fixing piece 31, and at one end of the cathode 2, which is arranged in the combustion chamber.
According to the self-arc-striking voltage-reduction thermal plasma beam generating device 100, at least two cathodes 2 correspond to one anode 3, so that electric arcs can be increased, and the stability can be improved; by reducing the distance between the discharge region 22 of the cathode 2 and the arc end 321, a hot ion beam can be generated without requiring a high voltage; by increasing the distance between the discharge region 22 and the discharge end 322 of the cathode 2, a larger range and a higher temperature of the thermal plasma beam can be achieved. The self-ignition voltage-reduction thermal plasma beam generation device 100 has the advantages of simple equipment, large generated electric arc, stable work, capability of working by using lower voltage and longer service life.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a from striking decompression thermal plasma beam generating device which characterized in that: from striking step-down thermal plasma beam generating device including enclose establish the outer wall that forms the combustion chamber cavity, with the fixed positive pole of outer wall, with two at least negative poles that the outer wall is fixed, the positive pole includes the mounting, certainly the ascending striking stick that perhaps downwardly extending of mounting, the mounting with the negative pole runs through the outer wall, the striking stick sets up in the combustion chamber cavity, the negative pole distance the distance of mounting is less than the striking stick is kept away from the distance of mounting one end.
2. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: the height of at least two cathodes in the vertical direction is the same as the height of the fixing piece.
3. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: and one end of the arc ignition rod, which is far away from the fixing piece, is equal to the distance between at least two cathodes.
4. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: the arc striking rod is obliquely arranged, and the distance between one end, far away from the fixing piece, of the arc striking rod and the outer wall is smaller than the distance between one end, connected with the fixing piece, of the arc striking rod and the outer wall.
5. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 4, wherein: the arc ignition rod extends obliquely away from at least two cathodes.
6. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: the outer wall encloses the combustion chamber cavity that forms and is cylindric.
7. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: and a hemispherical top cap is arranged at one end of the arc striking rod, which is far away from the fixing piece, and at one end of the cathode, which is arranged in the combustion chamber.
8. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: the negative pole is including setting up the first stiff end in the outer wall outside, setting are in the inboard discharge area of outer wall, set up the first retaining ring between first stiff end and discharge area, the diameter of first retaining ring is greater than the diameter of first stiff end, and set up the outer wall inboard with the outer wall supports and holds, the cladding of discharge area has the metal that discharges.
9. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 1, wherein: the mounting is including setting up the second stiff end in the outer wall outside, setting are in the outer wall inboard be used for with link, setting that the striking stick is connected are in the second stiff end with second retaining ring between the link, the diameter of second retaining ring is greater than the diameter of second stiff end, and set up the outer wall inboard in order with the outer wall supports and holds.
10. A self-igniting depressed-arc thermal plasma beam generating device as defined in claim 9, wherein: and a limiting block which is vertically arranged towards the outer wall is arranged on the second retaining ring and is clamped with the outer wall.
CN202110371347.7A 2021-04-07 2021-04-07 Self-arc-striking voltage-reducing thermal plasma beam generating device Pending CN113115505A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024037090A1 (en) * 2022-08-16 2024-02-22 海南摩尔兄弟科技有限公司 Plasma heating structure and plasma atomization apparatus

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US20120055907A1 (en) * 2009-03-12 2012-03-08 Saint-Gobain Centre De Recherches Et D'etudes Plasma torch with a lateral injector
CN202496127U (en) * 2012-02-21 2012-10-17 成都真火科技有限公司 Multiple-cathode arc plasma generator with anode arranged on central axis
CN105491782A (en) * 2016-02-16 2016-04-13 衢州迪升工业设计有限公司 Electrode of plasma device
US10045432B1 (en) * 2017-10-20 2018-08-07 DM ECO Plasma, Inc. System and method of low-power plasma generation based on high-voltage plasmatron
CN110049613A (en) * 2019-05-17 2019-07-23 山东博润工业技术股份有限公司 Three anode plasmatorch striking power supplys and striking method
CN110205589A (en) * 2019-07-12 2019-09-06 江苏徐工工程机械研究院有限公司 A kind of pulse carbon ion excitation source apparatus
CN110430656A (en) * 2019-07-18 2019-11-08 东莞材料基因高等理工研究院 A kind of double frequency thermal plasma jet generating device
CN210341041U (en) * 2019-04-28 2020-04-17 吉林大学 Multi-arc ion cathode plating device
CN211267223U (en) * 2019-12-31 2020-08-14 上海宏澎能源科技有限公司 High-power hollow plasma source device

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Publication number Priority date Publication date Assignee Title
US20120055907A1 (en) * 2009-03-12 2012-03-08 Saint-Gobain Centre De Recherches Et D'etudes Plasma torch with a lateral injector
CN101648200A (en) * 2009-07-15 2010-02-17 徐州市润博等离子体环保设备有限公司 Method and device for heating, melting and cracking waste plasma arc in auxiliary mode
CN202496127U (en) * 2012-02-21 2012-10-17 成都真火科技有限公司 Multiple-cathode arc plasma generator with anode arranged on central axis
CN105491782A (en) * 2016-02-16 2016-04-13 衢州迪升工业设计有限公司 Electrode of plasma device
US10045432B1 (en) * 2017-10-20 2018-08-07 DM ECO Plasma, Inc. System and method of low-power plasma generation based on high-voltage plasmatron
CN210341041U (en) * 2019-04-28 2020-04-17 吉林大学 Multi-arc ion cathode plating device
CN110049613A (en) * 2019-05-17 2019-07-23 山东博润工业技术股份有限公司 Three anode plasmatorch striking power supplys and striking method
CN110205589A (en) * 2019-07-12 2019-09-06 江苏徐工工程机械研究院有限公司 A kind of pulse carbon ion excitation source apparatus
CN110430656A (en) * 2019-07-18 2019-11-08 东莞材料基因高等理工研究院 A kind of double frequency thermal plasma jet generating device
CN211267223U (en) * 2019-12-31 2020-08-14 上海宏澎能源科技有限公司 High-power hollow plasma source device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024037090A1 (en) * 2022-08-16 2024-02-22 海南摩尔兄弟科技有限公司 Plasma heating structure and plasma atomization apparatus

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Application publication date: 20210713