CN104853514A - Laminar plasma generator - Google Patents
Laminar plasma generator Download PDFInfo
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- CN104853514A CN104853514A CN201510235787.4A CN201510235787A CN104853514A CN 104853514 A CN104853514 A CN 104853514A CN 201510235787 A CN201510235787 A CN 201510235787A CN 104853514 A CN104853514 A CN 104853514A
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Abstract
The present invention discloses a laminar plasma generator which is mainly formed by a cathode part, an air inlet ring, an anode part base and a fastening screw. Compared with a conventional turbulence plasma generator, the laminar plasma generator has the following advantages: (1) the service life of wearing parts (a cathode head and an anode head) is long, and the wearing parts are simple and convenient to replace, (2) the length of generated jet flow is long, the draw ratio is larger than 100, the axial temperature gradient is small, and the noise is low, (3) the structural size of the generator is small, the surface processing minimum internal diameter in a pipe is smaller than 150mm, (4) the laminar plasma generator can stably run for a long time, and repeatable accuracy and controllability are good.
Description
Technical field
The invention discloses a kind of laminar flow plasma generator, belong to hot plasma generating means field.
Background technology
Along with the development of science and technology, the requirement of every profession and trade to thermal source is more and more higher, and traditional turbulent flow heat plasma body heat source has been difficult to meet the requirement of many application scenarios because of himself shortcoming (jet is short, noise is low, energy conversion efficiency is low, large to entrainmenting of air, temperature gradient large, can repeatable accuracy low etc.).Therefore, be satisfied application requirement, be badly in need of a kind of there is jet stability, the high temperature head of district, noise is low, energy density is high, novel heat source to the entrainmenting less of environmental gas, the advantage such as axial gradient is little.As the minority thermal source with this advantage, there is from it very big concern just obtaining domestic and international researcher in laminar flow plasma.The people such as mechanics study institute of Chinese Academy of Sciences Pan Wenxia have just done a large amount of research work to laminar flow plasma, and provide a kind of laminar flow plasma generator architecture.But, although laminar flow plasma can meet the requirement of many application scenarios to thermal source very well, but laminar flow plasma Generator Design is difficult, especially when current lack design theory, be difficult to the laminar flow plasma generator designing long-time steady operation.Consult domestic and foreign literature and patent, only have a few laminar flow plasma generator architecture for laboratory to be disclosed, be not successfully applied to industrial circle.
Summary of the invention
In order to solve the problem, promote the industrial applications of laminar flow plasma, the invention discloses a kind of laminar flow plasma generator, long-time continuous can produce the Laminar Plasma Jet of excellent performance, meet the rigors of many occasions to thermal source.
The technical solution used in the present invention is as described below.
A kind of laminar flow plasma generator, primarily of base, cathode portion, air inlet ring, anode part and trip bolt composition, described cathode portion is made up of cathode block and cathode taps, adopts 3 ~ 6 trip bolts to be connected with base; Described air inlet ring inner circle coordinates with cathode block, and cylindrical coordinates with anode seat; Described anode part is made up of anode seat, anode head and compression end cap, adopts 3 ~ 6 trip bolts to be connected with base.
Described cathode block is made up of cathode connection, cathodic connection and central water-cooling pipe, cathode connection one end is processed with water-cooled electric cable joint, be connected with power cathode, and be welded with cooling water water out adapter, and be connected by 3 ~ 6 groups of screws and base, the other end and the large nose circle of cathodic connection are welded as a whole; The little nose circle of cathodic connection is being processed with air inlet annular groove near large nose circle place, and the other end is the fillet of falling M3 inwardly, on hollows uniform 3 ~ 10
Φthe aperture that 1 ~ 2mm is parallel with cathodic connection periphery bus, and be communicated with air inlet annular groove, form inlet channel; Central water-cooling pipe one end is processed with screw thread and is connected with cathode connection, and the other end is processed with U-shaped opening, and cooling water cools cathode taps by central tube, then by cooling water water out adapter reflux tank.
Described cathode taps is become with tungsten electrode head group by negative electrode headstock, negative electrode headstock one end periphery is processed with screw thread be connected with cathode block, and is designed with seal groove, and join sealing ring, the other end and tungsten electrode head are inlayed and are connected, and inside is processed with the interior circular hole of Cooling Water circulation; Tungsten electrode head adopts exotic material tungsten or the processing of its alloy, and being made up of a conical surface and arc surface tangent with it, is the attachment point of arc cathode.
Described air inlet ring adopts polytetrafluoroethylene or Ceramic manufacturing, prevents anode and cathode short circuit, and each mating surface adopts interference fits, large nose circle periphery is processed with air inlet annular groove, forms airtight inlet channel with anode seat, and uniform 3 ~ 10
Φthe aperture of 1 ~ 2mm is communicated with the air inlet annular groove on cathodic connection, with uniform working gas, on little nose circle inner headed face, uniform 3 ~ 6 diameters are the semicircle air admission hole of 1mm, its axial line and air inlet ring axial line are 8 ~ 15 ° of angles, to give the rotation direction component that working gas one is little, impel the rotation of Anode arc root on anode head periphery.
Described anode seat is welded to form by anode inner casing, point water ring and anode casing, and inlet suction port, cooling water water outlet cutting ferrule and water-cooled electric cable joint is welded with on anode seat periphery, at uniform 3 ~ 6 screwed holes of anode inner casing large round end surface, be connected by screw and base; Distribution 6 ~ 12 diameters on water ring large end annulus end face are divided to be the circular hole of 2mm, cooling water flows into anode head from circular hole, reflux tank after cooling anodes head, and its small end is a taper seat identical with anode head cooling cone face cone angle, to give cooling water speed along the conical surface, better cooling anodes head; Uniform 3 ~ 6 screwed holes of anode casing large round end surface, compress end cap by screw in compression and anode head and anode seat are connected.
Described anode head is made up of compression section and stabilising arc section, and compression section compression angle is 30 ~ 60 °, and stabilising arc section internal diameter is 2 ~ 8mm, and two intersegmental fillets seamlessly transit, and during work, electric arc moves to stabilising arc section gradually from compression section, and in the stable operation of stabilising arc section; Meanwhile, the periphery of anode head is processed with conical surface cooling-water duct and seal groove, and is equipped with corresponding sealing ring, to seal cooling water.
Described base adopts polytetrafluoroethylmaterial material processing, relies on the sealing property seal operation gas of himself, and its profile can be processed into circular or square as required.
Described cathode taps end face and anode head internal conical surface distance are less than 2mm, to ensure smooth striking.
Laminar flow plasma generator of the present invention has following beneficial effect.
1. consumable accessory is long for service time, and changes conveniently.Because negative and positive cartridge is as consumable accessory, its useful life often determines the time span that generator runs continuously.In this generator, take into full account the cooling of negative and positive cartridge, rational deployment cooling duct, negative and positive cartridge is cooled fully, and extend its useful life, make cathode taps can reach more than 100h useful life, the anode head life-span can reach more than 80h.Meanwhile, consider that negative and positive cartridge needs often to change, at the beginning of designing, just consider the convenience that it is changed: the attachment screw that only need twist off anode seat and base when cathode taps is changed, then twists off cathode taps, change new; The replacing of anode head then only need twist off compression end cap, and take off anode head and change, whole Renewal process only needs two or three minutes, simple and convenient.
2. the jet excellent performance produced.This generator is utilized to produce Laminar Plasma Jet, not only can long-time steady operation, and the jet produced has length long (draw ratio can reach more than 100), energy density is concentrated, axial-temperature gradient is little, noise is low, controllability is good, can the outstanding advantages such as repeatable accuracy is high.
3. maintenance of equipment is safeguarded simple, and cost is low.This laminar flow plasma generator requires low to running environment, can long-time steady operation in general industry environment, and without the need to special maintenance, operating cost is low.
4. promote the development of laminar plasma technology.This laminar flow plasma generator can long-time steady operation, and make the industrial applications of laminar plasma technology become possibility, this must promote further developing of laminar plasma technology.
Accompanying drawing explanation
Fig. 1 laminar flow plasma generator installation diagram.
Fig. 2 laminar flow plasma generator pictorial diagram and fluidics diagram.
Fig. 3 laminar flow plasma generator cathode portion.
Fig. 4 laminar flow plasma generator air inlet ring.
Fig. 5 laminar flow plasma generator anode part.
Fig. 6 laminar flow plasma generator base.
Wherein: 1 base, 2 cathode portion, 2-1 cathode block, 2-1a cathode connection, 2-1b cathodic connection, 2-1c central water-cooling pipe, 2-1d cooling water water out adapter, 2-2 cathode taps, 2-2a negative electrode headstock, 2-2b tungsten electrode head, 3 air inlet rings, 4 anode parts, 4-1 anode seat, 4-1a anode inner casing, 4-1b divides water ring, 4-1c anode casing, 4-1d water-cooled electric cable joint, 4-1e inlet suction port, 4-1f cooling water water outlet cutting ferrule, 4-2 anode head, 4-3 compresses end cap, 5 trip bolt 1,6 trip bolts 2.
Specific embodiment
In order to better explain explanation the present invention, now by reference to the accompanying drawings specific implementation of the present invention is described in detail.
Laminar flow plasma generator disclosed by the invention is made up of base (1), cathode portion (2), air inlet ring (3), anode part (4) and trip bolt (5,6).Base (1) is formed by polytetrafluoro materials processing, relies on self sealing property sealing cathode portion (2) and anode part (4), prevents working gas from revealing.Cathode portion (2) is made up of cathode block (2-1) and cathode taps (2-2), wherein: cathode block (2-1) is made up of cathode connection (2-1a), cathodic connection (2-1b) and central water-cooling pipe (2-1c), cathode connection (2-1a) one end is processed as water-cooled electric cable joint, and be welded with cooling water water out adapter (2-1d), the other end is one discoid, centre is processed with the screwed hole that Cooling Water enters, and is welded as a whole with the large nose circle of cathodic connection (2-1b); Cathodic connection (2-1b) little nose circle is being processed with air inlet annular groove near large nose circle place, and the other end is the fillet of falling M3 inwardly, on hollows uniform 3 ~ 10
Φthe aperture that 1 ~ 2mm is parallel with its periphery bus, and be communicated with air inlet annular groove, form inlet channel; Central water-cooling pipe (2-1c) one end is processed with screw thread and is connected with cathode connection (2-1a), and the other end is processed with U-shaped opening, to facilitate installation; Air inlet ring (3) adopts polytetrafluoroethylene or Ceramic manufacturing, prevents anode and cathode short circuit, and each mating surface adopts interference fits, large nose circle periphery is processed with air inlet annular groove, forms airtight inlet channel with anode seat (4-1), and uniform 3 ~ 10
Φthe aperture of 1 ~ 2mm is communicated with the air inlet annular groove on cathodic connection (2-1b), with uniform working gas, on little nose circle inner headed face, uniform 3 ~ 6 diameters are the semicircle air admission hole of 1mm, its axial line and air inlet ring axial line are 8 ~ 15 ° of angles, to give the rotation direction component that working gas one is little, impel the rotation of Anode arc root on anode head periphery; Anode seat (4-1) is welded to form by anode inner casing (4-1a), point water ring (4-1b) and anode casing (4-1c), and on anode seat (4-1) periphery, be welded with inlet suction port (4-1e), cooling water water outlet cutting ferrule (4-1f) and water-cooled electric cable joint (4-1d), at uniform 3 ~ 6 screwed holes of anode inner casing (4-1a) large round end surface, by screw 1(5) be connected with base (1); Water ring (4-1b) is divided to hold greatly distribution 6 ~ 12 diameters on annulus end face to be the circular hole of 2mm, cooling water flows into anode head (4-2) from circular hole, cooling anodes head (4-2) reflux tank afterwards, and its small end is a taper seat identical with anode head (4-2) cooling cone face cone angle, to give cooling water speed along the conical surface, better cooling anodes head (4-2); Uniform 3 ~ 6 screwed holes of anode casing (4-1c) large round end surface, compress end cap (4-3) by screw in compression and anode head (4-2) and anode seat (4-1) are connected.
During generator work: the water-cooled electric cable joint on cathode connection (2-1a) connects power cathode, cooling water water out adapter (2-1d) connects CWR, cooling water is through cathode connection (2-1a), flow to after central water-cooling pipe (2-1c) cools cathode taps (2-2), through cooling water water out adapter (2-1d) reflux tank, as shown in Figure 3.The upper water-cooled electric cable joint (4-1d) of anode seat (4-1) connects positive source, cooling water water outlet cutting ferrule (4-1f) connects CWR, inlet suction port (4-1e) trachea, cooling water enters through the upper aperture of point water ring (4-1b), from cooling water water outlet cutting ferrule (4-1f) reflux tank after cooling anodes head (4-2), as shown in Figure 5.Working gas enters air inlet ring (3) through inlet suction port (4-1e), and the inlet channel then on cathodic connection (2-1b) enters generator service area, and the most laggard anode head (4-2) is spouting.
During striking, first, open working gas and be adjusted to 5L/min, open cooling water, guarantee that it normally works; Then opening power, between cathode portion (2) and anode part (4), apply high-frequency and high-voltage, ignite electric arc; Then disconnect high-frequency and high-voltage, apply direct voltage (electric current is about 60A), pilot arc burns away; Finally as required electric current and air-flow are adjusted to relevant work parameter value, then generator normally works.
Laminar flow plasma generator energy long-time stable of the present invention produces the Laminar Plasma Jet that draw ratio can reach more than 100, and jet stability, controllability repeatability are high, are suitable for commercial Application.
Finally need explanation; above case study on implementation is only unrestricted for illustration of technical scheme of the present invention; those skilled in the art are to be understood that; technical scheme of the present invention is modified or equivalent replacement; and do not depart from the purpose and scope of the invention, all should be encompassed in the middle of protection scope of the present invention.
Claims (7)
1. a laminar flow plasma generator, primarily of cathode portion, anode part, air inlet ring, base and trip bolt composition, is characterized in that: described cathode portion is made up of cathode block and cathode taps, adopts 3 ~ 6 trip bolts to be connected with base; Described air inlet ring inner circle coordinates with cathode block, and cylindrical coordinates with anode seat; Described anode part is made up of anode seat, anode head and compression end cap, adopts 3 ~ 6 trip bolts to be connected with base.
2. a kind of laminar flow plasma generator according to claim 1, it is characterized in that: described cathode block is made up of cathode connection, cathodic connection and central water-cooling pipe, cathode connection one end is processed with water-cooled electric cable joint, and be welded with cooling water water out adapter, and be connected by 3 ~ 6 groups of screws and base, the other end and the large nose circle of cathodic connection are welded as a whole; The little nose circle of cathodic connection is being processed with air inlet annular groove near large nose circle place, and the other end is the fillet of falling M3 inwardly, on hollows uniform 3 ~ 10
Φthe aperture of 1 ~ 2mm is communicated with air inlet annular groove; Central water-cooling pipe one end is processed with screw thread and is connected with cathode connection, and the other end is processed with U-shaped opening.
3. a kind of laminar flow plasma generator according to claim 1, it is characterized in that: described cathode taps is become with tungsten electrode head group by negative electrode headstock, negative electrode headstock is processed with screw thread near cathode block one end and is connected with cathode block, periphery is processed with seal groove, and join sealing ring, the other end and tungsten electrode head are inlayed and are connected.
4. a kind of laminar flow plasma generator according to claim 1, is characterized in that: described air inlet ring adopts polytetrafluoroethylene or Ceramic manufacturing, and each mating surface adopts matched in clearance, and the upper outside disc of large nose circle is processed with air inlet annular groove, and uniform 3 ~ 10
Φthe aperture of 1 ~ 2mm is communicated with the air inlet annular groove on cathodic connection, and on little nose circle end face, uniform 3 ~ 6 diameters in close cathode taps place are the air admission hole of 1mm.
5. a kind of laminar flow plasma generator according to claim 1, it is characterized in that: described anode seat is welded to form by anode inner casing, point water ring and anode casing, and inlet suction port, cooling water water outlet cutting ferrule and water-cooled electric cable joint is welded with on anode seat periphery, at uniform 3 ~ 6 screwed holes of anode inner casing large round end surface, be connected by screw and base; Uniform 3 ~ 6 screwed holes of anode casing large round end surface, are connected anode head and anode seat by screw.
6. a kind of laminar flow plasma generator according to claim 1, it is characterized in that: described anode head is made up of compression section and stabilising arc section, two intersegmental fillets seamlessly transit, and are processed with bosh.
7. a kind of laminar flow plasma generator according to claim 1, is characterized in that: described base adopts polytetrafluoroethylmaterial material processing.
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| CN201510235787.4A CN104853514A (en) | 2015-05-12 | 2015-05-12 | Laminar plasma generator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105451427A (en) * | 2015-12-25 | 2016-03-30 | 中国航天空气动力技术研究院 | Ultrahigh enthalpy arc heater cathode |
| CN106166615A (en) * | 2016-08-31 | 2016-11-30 | 成都真火科技有限公司 | 3D printing device based on laminar flow plasma technology |
| CN106181001A (en) * | 2016-08-31 | 2016-12-07 | 成都真火科技有限公司 | A kind of laminar flow plasma welding method and welder |
| CN106304590A (en) * | 2016-09-29 | 2017-01-04 | 成都真火科技有限公司 | A kind of high-power laminar flow arc-plasma beam generator |
| CN106304599A (en) * | 2016-09-29 | 2017-01-04 | 成都真火科技有限公司 | A kind of sealing structure for high-power laminar flow arc-plasma beam generator |
| CN106636857A (en) * | 2016-09-29 | 2017-05-10 | 成都真火科技有限公司 | Alloy steel smelting method |
| CN107920411A (en) * | 2017-11-13 | 2018-04-17 | 四川大学 | A kind of hybrid plasma body generator for silica-base material processing |
| CN107969061A (en) * | 2017-12-23 | 2018-04-27 | 四川大学 | A kind of air inductively coupled plasma generator for processing silica-base material |
| CN110446530A (en) * | 2017-03-20 | 2019-11-12 | 纳华公司 | For generating and delivering the device of low temperature plasma |
| CN110545613A (en) * | 2019-09-05 | 2019-12-06 | 河北宝炬新材料科技有限公司 | arc plasma generator |
| CN110677974A (en) * | 2019-11-13 | 2020-01-10 | 四川轻化工大学 | Plasma generator |
| CN115038543A (en) * | 2019-10-03 | 2022-09-09 | 萨凯焊接设备公司 | Arc welding torch |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105451427A (en) * | 2015-12-25 | 2016-03-30 | 中国航天空气动力技术研究院 | Ultrahigh enthalpy arc heater cathode |
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| CN106166615A (en) * | 2016-08-31 | 2016-11-30 | 成都真火科技有限公司 | 3D printing device based on laminar flow plasma technology |
| CN106181001A (en) * | 2016-08-31 | 2016-12-07 | 成都真火科技有限公司 | A kind of laminar flow plasma welding method and welder |
| CN106636857B (en) * | 2016-09-29 | 2018-05-11 | 成都真火科技有限公司 | A kind of smelting process of steel alloy |
| CN106304590B (en) * | 2016-09-29 | 2018-10-16 | 成都真火科技有限公司 | A kind of high-power laminar flow arc-plasma beam generator |
| CN106636857A (en) * | 2016-09-29 | 2017-05-10 | 成都真火科技有限公司 | Alloy steel smelting method |
| CN106304590A (en) * | 2016-09-29 | 2017-01-04 | 成都真火科技有限公司 | A kind of high-power laminar flow arc-plasma beam generator |
| CN106304599A (en) * | 2016-09-29 | 2017-01-04 | 成都真火科技有限公司 | A kind of sealing structure for high-power laminar flow arc-plasma beam generator |
| CN110446530A (en) * | 2017-03-20 | 2019-11-12 | 纳华公司 | For generating and delivering the device of low temperature plasma |
| CN110446530B (en) * | 2017-03-20 | 2020-12-01 | 纳华公司 | Apparatus for generating and delivering low temperature plasma |
| CN107920411A (en) * | 2017-11-13 | 2018-04-17 | 四川大学 | A kind of hybrid plasma body generator for silica-base material processing |
| CN107920411B (en) * | 2017-11-13 | 2023-09-19 | 四川大学 | Hybrid plasma generator for processing silicon-based materials |
| CN107969061A (en) * | 2017-12-23 | 2018-04-27 | 四川大学 | A kind of air inductively coupled plasma generator for processing silica-base material |
| CN107969061B (en) * | 2017-12-23 | 2023-09-19 | 四川大学 | Atmospheric inductively coupled plasma generator for processing silicon-based materials |
| CN110545613A (en) * | 2019-09-05 | 2019-12-06 | 河北宝炬新材料科技有限公司 | arc plasma generator |
| CN115038543A (en) * | 2019-10-03 | 2022-09-09 | 萨凯焊接设备公司 | Arc welding torch |
| CN110677974A (en) * | 2019-11-13 | 2020-01-10 | 四川轻化工大学 | Plasma generator |
| CN110677974B (en) * | 2019-11-13 | 2024-04-05 | 四川轻化工大学 | Plasma generator |
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