CN106714437A - Input-power-adjustable dual-anode arc heating plasma torch - Google Patents
Input-power-adjustable dual-anode arc heating plasma torch Download PDFInfo
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- CN106714437A CN106714437A CN201510507096.5A CN201510507096A CN106714437A CN 106714437 A CN106714437 A CN 106714437A CN 201510507096 A CN201510507096 A CN 201510507096A CN 106714437 A CN106714437 A CN 106714437A
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- anode
- insulation sleeve
- negative electrode
- water
- interior insulation
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Abstract
The invention discloses an input-power-adjustable dual-anode arc heating plasma torch comprising anodes, an internal insulating bushing, a cathode, a driving screw rod, an end cap and an external insulating bushing. An anode nozzle is composed of two anodes, i.e. a basic anode and an auxiliary anode which are separated by a high-temperature-resistant insulating ceramic sheet so as to realize manual adjustment of the arc root position. Meanwhile, the input power of the torch can be adjusted by adjusting the distance between the cathode and the anodes so as to realize adjustable input power of the arc heating plasma torch in the aspect of structure. The arc heating plasma torch has the characteristics of being great in arc stability, high in cooling efficiency and long in the service life.
Description
Technical field
The invention belongs to heat plasma technology field, particularly a kind of adjustable double anode electric arc heated of input power etc. from
Daughter spray gun.
Background technology
Electric arc heated plasma gun is to utilize electric energy by the high-temperature electric arc hot gas of formation of being discharged between two electrodes, gas
It is heated by the electric arc simultaneously to 1 × 10 after into anode nozzle compression section4Ionized after the high temperature of more than K, into anode nozzle
Expansion segment expansion acceleration reaches, and ultimately forms plasma jet.Electric arc heat plasma technology has been widely used in machine
Tool, chemical industry, material and each field of aviation aerospace.The Specifeca tion speeification of spray gun depend on plasma jet temperature and
VELOCITY DISTRIBUTION, and its temperature and VELOCITY DISTRIBUTION situation depend on the design feature of spray gun, therefore the structure of spray gun is improved, make
More rationalize, be the field jointly concern problem.At present, conventional electric arc heated plasma torch, mostly
A pair of electrodes is used, i.e., by a negative electrode and an anode, plasma jet is produced in the presence of dc source.
In anode nozzle, due to flow field, the interaction of electromagnetic field so that high-temperature electric arc is constantly moved in anode, is made
The energy of gas ions is continually changing, and causes jet unstable, meanwhile, single anode construction easily causes high-temperature electric arc and is gathered in
Anode interior, causes electrode erosion.
And, the cathode and anode of most of electric arc heated plasma gun is in structure fixed, spacing therebetween
It is also fixed so that the input power of spray gun is certain under identical operating current.
The content of the invention
Found by studying, improve the stability that arc voltage is conducive to plasma jet.Due to current plasma spray
Rifle uses a pair of electrodes structure mostly, improves arc voltage and is restricted, so as to cause less stable.The present invention is just
Overcome the disadvantages mentioned above to propose and single anode is divided into basic anode and impressed current anode two parts, centre is subject to insulator
Double anode is formed, electric arc is drawn and is caused on impressed current anode, improve arc voltage, the heat energy distribution of plasma is partial to spray
Outside pipe, so as to change the plasma temperature distribution in spray gun, the stability of plasma is improve.The present invention is logical simultaneously
Cross screw-driven and realize cathode moving freely in axial direction, to adjust negative and positive die opening, realized under identical operating current
The adjustability of spray gun input power.
The technical solution for realizing the object of the invention is:
A kind of adjustable double anode electric arc heated plasma torch of input power, including anode, interior insulation sleeve, negative electrode,
Drive screw, end cap and external insulation sleeve;The anode of spray gun includes the basic anode and impressed current anode that are coaxially disposed, and leads to
Cross high-temperature insulation ceramics to separate, impressed current anode is circular ring structure, be arranged on the spout end of basic anode, impressed current anode is opened
The angle of flare in hole will also be engaged with the angle of flare of basic anode;Interior insulation sleeve gap is arranged on external insulation sleeve barrel chamber body
Interior, one end of interior insulation sleeve is fixed with basic anode, and the other end has two symmetrical end pin, the relative face of two end pin
On be symmetrical arranged sliding block, end pin and the end cap of interior insulation sleeve are connected, and drive screw is rotatably assorted with end cap, and by driving
Position limiting convex ring in screw rod circumference is spacing in the axial direction, and one end that drive screw stretches out end cap is drive screw release handle, cloudy
Pole one end is the negative electrode water-cooled cavity of inner hollow, and the other end is the driving screw coordinated with drive screw, on negative electrode outer wall
Chute be slidably matched with sliding block, negative electrode water-cooled cavity is by the water-cooling channel on negative electrode, interior insulation sleeve and basic anode
Connected with anode water-cooled cavity, the cooling water inlet connected with negative electrode water-cooled cavity is provided with negative electrode, be provided with basic anode
The coolant outlet connected with anode water-cooled cavity, the both sides negative electrode outer wall of cooling-water duct and interior insulation sleeve on negative electrode
Inner wall sealing coordinates, external insulation sleeve be provided with the working gas passage that connects on interior insulation sleeve, working gas passage with
Anode nozzle is connected.
The present invention compared with prior art, its remarkable advantage:
(1) present invention by double anode switch, during spray gun normal work, plasma-arc anode back segment, electric arc
Length is artificially elongated, and the good stability of spray gun, the life-span is improved.
(2) present invention adjusts the input power of spray gun by adjusting cathode and anode spacing, realizes that electric arc adds from structure
Input power is adjustable in heat plasma spray gun body.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the adjustable double anode electric arc heated plasma torch of input power of the present invention.
Specific embodiment
With reference to Fig. 1:
A kind of adjustable double anode electric arc heated plasma torch of input power of the present invention, including anode, interior insulation sleeve
2nd, negative electrode 3, drive screw 4, end cap 6 and external insulation sleeve 7;The anode of spray gun includes the basic anode being coaxially disposed
1 and impressed current anode 10, and separated by high-temperature insulation ceramics 9, impressed current anode 10 is circular ring structure, is arranged on base
The spout end of plinth anode 1, the angle of flare of the perforate of impressed current anode 10 will also be engaged with the angle of flare of basic anode 1;It is interior
The gap of insulating sleeve 2 is arranged in the cavity of external insulation sleeve 7, and one end of interior insulation sleeve 2 is fixed with basic anode 1,
The other end has two symmetrical end pin, holds for two and be symmetrical arranged sliding block 2-2, the end of interior insulation sleeve 2 on the relative face of pin
Pin is connected with end cap 6, and drive screw 4 is rotatably assorted with end cap 6, and is existed by the position limiting convex ring in the circumference of drive screw 4
Axial upper limit, one end that drive screw 4 stretches out end cap 6 is drive screw release handle 4-1, and the one end of negative electrode 3 is inside
Hollow negative electrode water-cooled cavity 3-5, the other end is the driving screw 3-3 coordinated with drive screw 4, on the outer wall of negative electrode 3
Chute 3-2 is slidably matched with sliding block 2-2, and negative electrode water-cooled cavity 3-5 is by negative electrode 3, interior insulation sleeve 2 and basic anode
Water-cooling channel on 1 is connected with anode water-cooled cavity 1-4, is provided with negative electrode 3 cold with what negative electrode water-cooled cavity 3-5 was connected
But water inlet 3-4, is provided with the coolant outlet 1-5 connected with anode water-cooled cavity 1-4, on negative electrode 3 on basic anode 1
The inner wall sealing cooperation of the outer wall of both sides negative electrode 3 and interior insulation sleeve 2 of cooling-water duct, external insulation sleeve 7 and interior insulation
The working gas passage 2-3 of connection is provided with sleeve 2, working gas passage 2-3 is connected with anode nozzle 1-1.
Basic anode 1 and impressed current anode 10 are separated by high-temperature insulation ceramics 9, and fixes sleeve 11 will be auxiliary by screw thread
Supporing yang pole is connected on basic anode 1.
Cooled cathode aquaporin 3-1 is provided with negative electrode 3, interior insulation sleeve cooling-water duct 2-1 is provided with interior insulation sleeve 2,
Anode cooling-water duct 1-3 is provided with basic anode 1, negative electrode water-cooled cavity 3-5 is passed sequentially through with anode water-cooled cavity 1-4
Cooled cathode aquaporin 3-1, interior insulation sleeve cooling-water duct 2-1 are connected with anode cooling-water duct 1-3, and upper negative electrode is cold
But aquaporin 3-1 is provided with cavity, negative electrode with interior insulation sleeve cooling-water duct 2-1 joining places on interior insulation sleeve 2
Motion tracks of the cooling-water duct 3-1 on the axial direction of negative electrode 3 is located in the range of cavity, the interior insulation sleeve of cavity both sides
2 inwalls are provided with and O-ring seal 8 are set in annular groove, annular groove.
The shape of the anode water-cooled cavity 1-4 of basic anode 1 is consistent with nozzle form to be engaged.
Working gas passage 2-3 is communicated to the gas storage cavity in interior insulation sleeve 2, week between gas storage cavity and anode nozzle
To being uniformly arranged gas vent.
The axial cross section of drive screw release handle 4-1 is square.
Operation principle:The adjustable double anode electric arc heated plasma gun of input power of the present invention, by original single anode
Cut along vertical axial and be divided into basic anode 1 and impressed current anode 10, centre high-temperature insulation ceramics 9 are separated, Gu
Determine sleeve 11 impressed current anode is connected on basic anode 1 by screw thread, the positive pole of dc source connects the He of basic anode 1
Impressed current anode 10, is switched with a transferred arc between two parts anode and connected, and power cathode accesses negative electrode 3.Start working
When, it is powered between basic anode 1 and negative electrode 3, it is ensured that the steady starting the arc.After after electric arc working stability, connection auxiliary is positive
Pole 10 simultaneously disconnects basic anode 1, so as to arc root attachment position is artificially transformed into impressed current anode 10 from basic anode 1
On.
Meanwhile, interior insulation sleeve 2 is connected as a single entity with end cap 6, and sliding block 2-2 is provided between the two ends pin of interior insulation sleeve 2,
Sliding block 2-2 can slide realization axially activity in the chute 3-2 of negative electrode 3, and there are driving screw, negative electrode in the one end of negative electrode 3
3 driving screw is threadedly coupled with drive screw 4, is adjusted by the drive screw on specific purpose tool drive screw 4
Handle 4-1 makes negative electrode 3 make axial movement to adjust between the head of gun body inner cathode 3 and basic anode 1 to drive negative electrode 3
Spacing 1-2, to adjust the input power of electric arc heated plasma torch.
External insulation sleeve 7 with the working gas passage 2-3 that connects is provided with interior insulation sleeve 2, be working gas entrance,
Working gas, while gas storage cavity is circumferentially being evenly distributed with outlet, is being stored up hence into the gas storage cavity of interior insulation sleeve
Along negative electrode 3, axially acceleration is ejected into the annular housing 2-4 between interior insulation sleeve 2 and negative electrode 3 after the pressurization of gas cavity, together
When cooling negative electrode 3 surface, enter into anode nozzle 1-1, the plasma jet of high temperature and high speed is produced after ionization.
Embodiment:
With reference to Fig. 1:
A kind of adjustable double anode electric arc heated plasma torch of input power, including basic anode 1, interior insulation sleeve
2nd, negative electrode 3, drive screw 4, end cap 6 and external insulation sleeve 7, high-temperature insulation ceramics 9, impressed current anode 10 and solid
Determine sleeve 11;Basic anode 1 and impressed current anode 10 are separated by high-temperature insulation ceramics 9, and fixes sleeve 11 passes through spiral shell
Be connected to impressed current anode on basic anode 1 by line, and the positive pole of dc source connects anode, with a transfer between two parts anode
Arc switch is connected, and power cathode accesses negative electrode 3.During start-up operation, it is powered between basic anode 1 and negative electrode 3,
Ensure the steady starting the arc.After after electric arc working stability, connecting impressed current anode 10 and disconnecting basic anode 1, so as to arc root is attached
Position artificially to be transformed on impressed current anode 10 from basic anode 1.
The gap of interior insulation sleeve 2 is arranged in the cavity of external insulation sleeve 7, and one end of interior insulation sleeve 2 is fixed with basic sun
Pole 1, the other end has two symmetrical end pin, holds for two and be symmetrical arranged sliding block 2-2, interior insulation sleeve 2 on the relative face of pin
End pin and end cap 6 be connected, drive screw 4 is rotatably assorted with end cap 6, and by the limit convex in the circumference of drive screw 4
Ring is spacing in the axial direction, drive screw 4 is circled, and can not move axially, the external part of drive screw 4
One end of lid 6 is drive screw release handle 4-1, and the axial cross section of drive screw release handle 4-1 is square, coordinates square hole
Specific purpose tool is adjusted, and the one end of negative electrode 3 is the negative electrode water-cooled cavity 3-5 of inner hollow, and the other end is and drive screw
The 4 driving screw 3-3 for coordinating, the chute 3-2 and sliding block 2-2 on the outer wall of negative electrode 3 are slidably matched, plasma torch work
When making, drive screw 4 is rotated using the interior square hole specific purpose tool of insulating materials making, negative electrode 3 is made axial movement and come
Negative electrode head in regulation gun body and the spacing 1-2 between anode, to change the input power of electric arc heated plasma gun;
Negative electrode water-cooled cavity 3-5 is empty by the water-cooling channel and anode water-cooled on negative electrode 3, interior insulation sleeve 2 and anode 1
Chamber 1-4 connect, the cooling water inlet 3-4 connected with negative electrode water-cooled cavity 3-5 is provided with negative electrode 3, be provided with anode 1 with
Anode water-cooled cavity 1-4 connection coolant outlet 1-5, on negative electrode 3 outer wall of both sides negative electrode 3 of cooling-water duct with it is interior
The inner wall sealing of insulating sleeve 2 coordinates, external insulation sleeve 7 with the working gas passage that connects is provided with interior insulation sleeve 2
2-3, working gas passage 2-3 is connected with anode nozzle 1-1;Specially:Cooled cathode aquaporin 3-1 is provided with negative electrode 3,
Interior insulation sleeve cooling-water duct 2-1 is provided with interior insulation sleeve 2, anode cooling-water duct 1-3 is provided with anode 1, it is cloudy
Pole water-cooled cavity 3-5 and anode water-cooled cavity 1-4 passes sequentially through cooled cathode aquaporin 3-1, interior insulation sleeve cooling water and leads to
Road 2-1 is connected with anode cooling-water duct 1-3, upper cooled cathode aquaporin 3-1 and interior insulation sleeve cooling-water duct 2-1
Joining place is provided with cavity, motion tracks of the cooled cathode aquaporin 3-1 on the axial direction of negative electrode 3 on interior insulation sleeve 2
In the range of cavity, the inwall of interior insulation sleeve 2 of cavity both sides is provided with annular groove, annular groove and sets O-shaped
Sealing ring 8;Cooling water enters the negative electrode water-cooled cavity 3-5 of cathode internal from cooling water inlet 3-4, and passes sequentially through negative electrode
Cooling-water duct 3-1, interior insulation sleeve cooling-water duct 2-1 and anode cooling-water duct 1-3 enter anode water-cooled cavity
1-4, and from coolant outlet 1-5 outflows, so as to form cooling water recirculation system, form the integration of electrode water-cooled;
Working gas passage 2-3 is communicated to the gas storage cavity in interior insulation sleeve 2, week between gas storage cavity and anode nozzle
To being uniformly arranged eight gas vents;Working gas enters gas storage cavity by working gas passage 2-3, in gas storage cavity plus
Along negative electrode 3, axially acceleration is ejected into the annular housing 2-4 between interior insulation sleeve 2 and negative electrode 3 after pressure, while cooling down cloudy
The surface of pole 3, enters into anode nozzle 1-1, and the plasma jet of high temperature and high speed is produced after ionization.
Claims (6)
1. the adjustable double anode electric arc heated plasma torch of a kind of input power, it is characterised in that:Including anode,
Interior insulation sleeve (2), negative electrode (3), drive screw (4), end cap (6) and external insulation sleeve (7);The sun of spray gun
Pole includes the basic anode (1) and impressed current anode (10) that are coaxially disposed, and is separated by high-temperature insulation ceramics (9),
Impressed current anode (10) is circular ring structure, is arranged on the spout end of basic anode (1), impressed current anode (10) perforate
The angle of flare will also be engaged with the angle of flare of basic anode (1);Interior insulation sleeve (2) gap is arranged on external insulation sleeve
(7) in cavity, one end of interior insulation sleeve (2) is fixed with basic anode (1), and the other end has two symmetrical end pin,
Hold for two and sliding block (2-2) be symmetrical arranged on the relative face of pin, end pin and the end cap (6) of interior insulation sleeve (2) are connected,
Drive screw (4) is rotatably assorted with end cap (6), and by the position limiting convex ring in drive screw (4) circumference in the axial direction
Spacing, one end that drive screw (4) stretches out end cap (6) is drive screw release handle (4-1), negative electrode (3) one end
It is negative electrode water-cooled cavity (3-5) of inner hollow, the other end is the driving screw (3-3) coordinated with drive screw (4),
Chute (3-2) on negative electrode (3) outer wall is slidably matched with sliding block (2-2), and negative electrode water-cooled cavity (3-5) is by the moon
Water-cooling channel on pole (3), interior insulation sleeve (2) and basic anode (1) is connected with anode water-cooled cavity (1-4),
The cooling water inlet (3-4) connected with negative electrode water-cooled cavity (3-5) is provided with negative electrode (3), is opened on basic anode (1)
There is the coolant outlet (1-5) connected with anode water-cooled cavity (1-4), the both sides of cooling-water duct are cloudy on negative electrode (3)
The inner wall sealing cooperation of pole (3) outer wall and interior insulation sleeve (2), external insulation sleeve (7) and interior insulation sleeve (2)
On be provided with the working gas passage (2-3) of connection, working gas passage (2-3) is connected with anode nozzle (1-1).
2. the adjustable double anode electric arc heated plasma torch of input power according to claim 1, the base
Plinth anode (1) and impressed current anode (10) are separated by high-temperature insulation ceramics (9), and fixes sleeve (11) is by spiral shell
Be connected to impressed current anode on basic anode (1) by line.
3. the adjustable double anode electric arc heated plasma torch of input power according to claim 1, its feature
It is:Cooled cathode aquaporin (3-1) is provided with the negative electrode (3), interior insulation sleeve is provided with interior insulation set on (2)
Cylinder cooling-water duct (2-1), is provided with anode cooling-water duct (1-3), negative electrode water-cooled cavity (3-5) on basic anode (1)
Cooled cathode aquaporin (3-1), interior insulation sleeve cooling-water duct (2-1) are passed sequentially through with anode water-cooled cavity (1-4)
Connected with anode cooling-water duct (1-3), upper cooled cathode aquaporin (3-1) and interior insulation sleeve cooling-water duct (2-1)
Joining place is provided with cavity on interior insulation sleeve (2), and cooled cathode aquaporin (3-1) is on negative electrode (3) axial direction
Motion track be located at cavity in the range of, interior insulation sleeve (2) inwall of cavity both sides is provided with annular groove, annular
O-ring seal (8) is set in groove.
4. the adjustable double anode electric arc heated plasma torch of input power according to claim 1, its feature
It is:The shape of anode water-cooled cavity (1-4) of the basic anode (1) is consistent with nozzle form to be engaged.
5. the adjustable double anode electric arc heated plasma torch of input power according to claim 1, its feature
It is:The working gas passage (2-3) is communicated to the gas storage cavity in interior insulation sleeve (2), gas storage cavity and sun
Gas vent is circumferentially uniformly arranged between the nozzle of pole.
6. the adjustable double anode electric arc heated plasma torch of input power according to claim 1, its feature
It is:The axial cross section of the drive screw release handle (4-1) is square.
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CN201510507096.5A CN106714437A (en) | 2015-08-18 | 2015-08-18 | Input-power-adjustable dual-anode arc heating plasma torch |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108601193A (en) * | 2018-03-21 | 2018-09-28 | 中国科学院合肥物质科学研究院 | A kind of long scale uniform heat plasma arcs production method and device |
CN109587922A (en) * | 2018-12-11 | 2019-04-05 | 新奥科技发展有限公司 | A kind of plasma water torch |
CN113547129A (en) * | 2021-07-22 | 2021-10-26 | 湖南顶立科技有限公司 | Carbon-brush-free conductive high-rotation-speed plasma rotary atomization powder making device |
CN113853054A (en) * | 2021-11-05 | 2021-12-28 | 北京环境特性研究所 | Plasma torch and gap adjusting method thereof |
CN115679240A (en) * | 2022-10-31 | 2023-02-03 | 西安交通大学 | High-energy plasma spray gun device and method for in-situ atomization of metal or ceramic powder |
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CN103200757A (en) * | 2010-10-04 | 2013-07-10 | 衢州市广源生活垃圾液化技术研究所 | Arc plasma torch |
CN103269558A (en) * | 2013-06-05 | 2013-08-28 | 南京理工大学 | Anode of supersonic plasma torch, and supersonic plasma torch |
CN104602430A (en) * | 2015-02-02 | 2015-05-06 | 南京理工大学 | Adjustable input power type arc heating plasma spraying gun |
CN204887664U (en) * | 2015-08-18 | 2015-12-16 | 南京理工大学 | Two anode arc of input power adjustable add hot plasma spray gun |
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2015
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Patent Citations (4)
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CN103200757A (en) * | 2010-10-04 | 2013-07-10 | 衢州市广源生活垃圾液化技术研究所 | Arc plasma torch |
CN103269558A (en) * | 2013-06-05 | 2013-08-28 | 南京理工大学 | Anode of supersonic plasma torch, and supersonic plasma torch |
CN104602430A (en) * | 2015-02-02 | 2015-05-06 | 南京理工大学 | Adjustable input power type arc heating plasma spraying gun |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108601193A (en) * | 2018-03-21 | 2018-09-28 | 中国科学院合肥物质科学研究院 | A kind of long scale uniform heat plasma arcs production method and device |
CN108601193B (en) * | 2018-03-21 | 2021-01-05 | 中国科学院合肥物质科学研究院 | Long-scale uniform thermal plasma arc generation method and device |
CN109587922A (en) * | 2018-12-11 | 2019-04-05 | 新奥科技发展有限公司 | A kind of plasma water torch |
CN113547129A (en) * | 2021-07-22 | 2021-10-26 | 湖南顶立科技有限公司 | Carbon-brush-free conductive high-rotation-speed plasma rotary atomization powder making device |
CN113853054A (en) * | 2021-11-05 | 2021-12-28 | 北京环境特性研究所 | Plasma torch and gap adjusting method thereof |
CN113853054B (en) * | 2021-11-05 | 2023-11-14 | 北京环境特性研究所 | Plasma torch and gap adjusting method thereof |
CN115679240A (en) * | 2022-10-31 | 2023-02-03 | 西安交通大学 | High-energy plasma spray gun device and method for in-situ atomization of metal or ceramic powder |
CN115679240B (en) * | 2022-10-31 | 2023-11-14 | 西安交通大学 | High-energy plasma spray gun device and method for in-situ atomizing metal or ceramic powder |
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