CN208424883U - A kind of direct-current arc constraint control miniaturization magnetic device - Google Patents
A kind of direct-current arc constraint control miniaturization magnetic device Download PDFInfo
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- CN208424883U CN208424883U CN201821258663.3U CN201821258663U CN208424883U CN 208424883 U CN208424883 U CN 208424883U CN 201821258663 U CN201821258663 U CN 201821258663U CN 208424883 U CN208424883 U CN 208424883U
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- electrode
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- magnet
- positioning ring
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Abstract
The utility model discloses a kind of direct-current arcs to constrain control miniaturization magnetic device; one end of electrode is arranged in positioning ring; the other end of electrode is arranged in screw thread baffle ring; magnet assemblies are set on the electrode; between positioning ring and screw thread baffle ring; protection is set on the outside of magnet assemblies, and direct-current arc is generated and maintained in the inside of electrode；The outer wall of the located ring injecting electrode of cooling medium, for being cooled down to electrode.The utility model is remarkably decreased the volume and weight of high power DC arc plasma torch, while reducing thermal losses, improves electric conversion efficiency while not influencing electrode life growth effect；The structure for simplifying the overall structure of plasma torch, especially cooling medium channel, improves cooling efficiency；Miniaturization magnetic device forms an individual components after the assembly is completed, and component overall structure is solid and reliable, in place to key component protection, while being highly susceptible to connecting with other component.
Description
Technical field
The utility model belongs to plasma torch (Plasma Torch) technical field, and in particular to a kind of direct-current arc is about
Beam control system miniaturization magnetic device.
Background technique
DC arc plasma jet is that one kind quickly can generate ultra-high temperature (3000~10000 DEG C) (in 1~2s)
Electricity-heat converter, be with a wide range of applications in igniting, the fields such as combustion-supporting, metallurgical, environmentally friendly.But by force straight is flowed greatly
Galvanic electricity arc can the electrode of plasma torch generate serious ablation, shorten electrode life sharply, this be limitation etc. from
One of the principal element of daughter torch large-scale engineering applications.Existing solution is to arrange electromagnetic coil, benefit in surrounding them
Promote electric arc high speed rotation with the magnetostatic field that electromagnetic coil generates, to weaken long-time ablation of the electric arc to electrode part, thus
Extend electrode life.This method is to the growth significant effect of electrode life, but electromagnetic coil volume and weight are huge, and electric current
Certain thermal losses can be generated when passing through from coil, required magnetic field is stronger, then thermal losses is bigger, this plasma torch it is cold
But design, working service convenience and electric conversion efficiency can bring certain adverse effect.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of direct current
Electric arc constraint control miniaturization magnetic device replaces electromagnetic coil with permanent magnet, and passes through electrode, magnet and associated support knot
The whole design of structure forms the cooling medium runner for being close to electrode, significantly reduces small product size and weight, reduces thermal losses, mentions
The electric conversion efficiency of high beta plasma torch.
The utility model uses following technical scheme:
A kind of direct-current arc constraint control miniaturization magnetic device, including electrode, are provided with positioning ring in one end of electrode,
The other end is provided with screw thread baffle ring, is successively set with magnet assemblies from inside to outside on the electrode 1 between positioning ring and screw thread baffle ring
And protective case.
Specifically, being provided with magnet holder between electrode and magnet assemblies, one end of magnet holder is sleeved on positioning ring
In outside wall surface, the other end is threadedly coupled with screw thread baffle ring.
Further, positioning ring is annular structure, and step structure is equipped on the inner and outer wall of positioning ring, respectively with
Electrode and magnet holder socket connection, have been arranged circumferentially several through-holes along positioning ring.
Further, magnet holder is Y-shaped structure, with the rear end face of positioning ring and the periphery gap setting of electrode.
Further, one end of magnet holder is provided with groove, is provided with circlip in groove.
Specifically, through-hole is provided on positioning ring, for cooling down the outer wall of the located ring injecting electrode of cooling medium.
Specifically, magnet assemblies are spliced by the identical permanent magnet of several internal-and external diameters.
Further, the surface of permanent magnet is provided with the coat of metal that thickness is more than or equal to 100 μm.
Specifically, protective case is straight circular pipe type structure, it is located by connecting by the card slot in magnet holder and screw thread baffle ring.
Compared with prior art, the utility model at least has the advantages that
A kind of direct-current arc constraint control miniaturization magnetic device of the utility model, is covered using magnet assemblies in magnet holder
Body portion, outer layer add protective case；Screw thread baffle ring screws in magnet holder tail portion with fixed magnet component, finally uses circlip clamping spiral shell
Line baffle ring, overall structure is fixed.Using the magnetostatic field of magnet assemblies, the direct-current arc generated in electrode is constrained
Control, by the arc column partially restrained of electric arc in structure near axis, and makes electric arc arc root along electrode inner wall high speed rotation, to subtract
Slow electrode erosion, increases electrode life.
Further, positioning ring is annular structure, is limited respectively to electrode and magnet holder, along the week of positioning ring
To several through-holes have been evenly arranged, cooling medium runner is made of the structure of each components and its relative position, is not necessarily to independent cloth
It sets, simplifies overall structure, further reduce the volume and weight of plasma torch, and improve cooling efficiency.
Further, the groove of setting carries out magnet assemblies with the cooperation of screw thread baffle ring dual for being caught in circlip
Limit, it is ensured that it will not be loosened.
Further, magnet assemblies are spliced by the permanent magnet of several same sizes, replace electromagnetic coil with permanent magnet,
Avoid loss of the input power on electromagnetic coil, which typically constitutes 2% of total power input or so, improve etc. from
The electric conversion efficiency of daughter torch.
Further, permanent magnet includes 2~5, is substantially reduced the volume and weight of plasma torch, such as: in arc
Electric current 140A, when maximum magnetic field strength is all 800Gs on axis, the volume and weight of permanent magnet is electromagnetic coil respectively
65.3% and 14.0%；When magnetic field strength is increased to 1600Gs, the volume and weight of permanent magnet is electromagnetic coil respectively
49.8% and 12.7%, it can be seen that the magnetic field strength of needs is bigger, and the volume and weight advantage of permanent magnet is just more obvious.
Further, protective case is straight circular pipe type structure, is made of aluminium alloy or titanium alloy, and wall thickness is 1~2mm, is being subtracted
Guarantee good structural strength while light weight, the gap of inner wall and magnet assemblies outer wall is 1~2mm, for preventing product
Because accidental impact caused by magnetic force causes magnet assemblies to be damaged during installing and using.
In conclusion the utility model makes high power DC electric arc etc. while not influencing electrode life growth effect
The volume and weight of gas ions torch is remarkably decreased, while reducing thermal losses, improves electric conversion efficiency；Simplify plasma
The structure of the overall structure of body torch, especially cooling medium channel, improves cooling efficiency；Minimize magnetic device after the assembly is completed
An individual components are formed, component overall structure is solid and reliable, in place to key component protection, while being highly susceptible to and other component
Connection.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Wherein: 1. electrodes；2. positioning ring；3. magnet holder；4. screw thread baffle ring；5. circlip；6. magnet assemblies；7. protecting
Sheath.
Specific embodiment
In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " left side ",
The orientation or position of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside", " side ", " one end ", " one side "
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be construed as a limitation of the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to Fig. 1, a kind of direct-current arc constraint control miniaturization magnetic device of the utility model, including electrode 1, positioning
Ring 2, magnet holder 3, screw thread baffle ring 4, circlip 5, magnet assemblies 6 and protective case 7.
Positioning ring 2 is the annulus for having stepped hole, is mounted on one end of electrode 1；Magnet holder 3 is sleeved on electrode 1
On, the head of magnet holder 3 is sleeved in the outside wall surface of positioning ring 2,6 sets of magnet assemblies in magnet holder 3, magnet holder 3
Support and radial limit of the body portion for magnet assemblies 6；Screw thread baffle ring 4 is connected through a screw thread the tail portion phase with magnet holder 3
Even, to limit the axial position of magnet assemblies 6；Circlip 5 is stuck in the groove of 3 tail portion of magnet holder, to prevent screw thread loose
It is de-；Protective case 7 is mounted on the outside of magnet assemblies 6, for preventing the object shock generated by magnetism from magnet assemblies 6 being caused to be damaged
Bad, direct-current arc is generated and is maintained in the inside of electrode 1；Cooling medium be circumferentially evenly arranged from positioning ring 2 one group logical
Hole injection, flows through the outer wall of electrode 1, to cool down to electrode 1.
Electrode 1 is hollow metal bar, for being used cooperatively with another with its electrode 1 with certain potentials difference, with
Direct-current arc is generated and maintained between two electrodes 1, and one end arc root of electric arc and a part of arc column are fallen in electrode 1.
The inner and outer wall of positioning ring 2 is equipped with step structure, socket-connects respectively with electrode 1 and magnet holder 3, for electricity
Pole 1 and magnet holder 3 it is fixed and positioned, to limit the relative position of electrode 1 and magnet assemblies 6；Circumferentially it is evenly arranged number
A through-hole, as cooling medium runner.
Preferably, the material of positioning ring 2 is Al2O3Content is not less than 95% aluminium oxide ceramics.
There are 2~4mm's between Y-shaped structure, with the rear end face of positioning ring 2 and the periphery of electrode 1 for magnet holder 3
Gap, it is ensured that cooling medium passes through；The tail portion of magnet holder 3 adds the structure type of groove using screw thread, by magnet assemblies 6
After being inserted in body portion, screw thread baffle ring 4 screws in the tail portion of magnet holder 3, circlip 5 is installed after screw thread baffle ring 4, and elasticity is kept off
Circle 5 is caught in groove, to prevent the loosening of screw thread baffle ring 4 from magnet assemblies 6 being caused to be deviate from, carries out double limitation to magnet assemblies 6, it is ensured that
It will not be loosened.
Magnet assemblies 6 are the core components of the utility model, and component can be identical forever by several internal-and external diameters according to length difference
Magnet is spliced, and the material of single permanent magnet is SmCo, and the specific trade mark is Sm2Co17, Curie temperature is not less than 800 DEG C, work
Temperature is not less than 350 DEG C；Permanent magnetism iron surface is provided with the coat of metal, and thickness of coating is not less than 100 μm.
Preferably, the coat of metal is nickel layer, and magnet assemblies 6 are according to the wall thickness of axial length and permanent magnet difference, by 2~5
The identical permanent magnet of a internal-and external diameter is attracted.
Protective case 7 is straight circular pipe type structure, is positioned by the card slot in magnet holder 3 and screw thread baffle ring 4；Material is aluminium conjunction
Gold or titanium alloy, 1~2mm of wall thickness guarantee good structural strength while mitigating weight；The inner wall and magnet of protective case 7
The gap that 1~2mm is reserved between 6 outer wall of component, prevents external force to be directly conducted to magnet assemblies 6 by protective case 7.
The working principle of the utility model is as follows:
Direct-current arc is generated and is maintained between electrode 1 and another electrode, wherein fall in be in electrode 1 electric arc a part
Arc column and one end arc root, electric arc revolve under the Action of Static Magnetic Field that magnet assemblies 6 generate around the structure axis high speed of magnet assemblies 6
Turn, to becoming at the ablated position of electrode 1 from a point around 1 one week circle of inner wall of electrode, and reduces fuel factor
Aggregation, greatly reduces the ablated rate of electrode 1, increases the service life of electrode 1；In addition, cooling medium from magnet holder 3 with
The gap reserved between 1 outer wall of electrode is flowed through, and plays good cooling effect to electrode 1.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.The usually description in attached drawing here
The component of the utility model embodiment with shown in can be arranged and be designed by a variety of different configurations.Therefore, right below
The detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit claimed invention
Range, but it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the utility model protection
Range.
A kind of direct-current arc constraint control of the utility model follows the steps below design with miniaturization magnetic device:
(1) according to electrode size Design Orientation ring, electrode is allow firmly to be caught in positioning ring inner wall, while according to cooling
Rate-of flow designs one group of axially extending bore on positioning ring, using as cooling medium runner；
(2) magnet holder is designed, carrier head should be able to closely be engaged with positioning ring outer circle, and body minister degree should be than that need to replace
Electromagnetic coil is slightly longer, to reserve fixation of the sufficient space for magnet assemblies；
(3) magnet assemblies are designed by the internal diameter of magnet assemblies of the outer diameter in magnet holder body portion, according to the surplus of selected magnet steel
The parameters such as magnetic and coercivity solve the Distribution of Magnetic Field of magnet assemblies with numerical value software for calculation (such as Comsol, Ansys), make it
Magnetic field strength is approximate with the electromagnetic coil of required replacement；
(4) designing screw thread baffle ring, circlip according to the structure of magnet holder and magnet assemblies (can be according to GB/T 894.1
Choose) and protective case.
When maximum magnetic field strength is all 800Gs on arc current 140A, axis, the volume and weight of permanent magnet is electricity respectively
The 65.3% of magnetic coil and 14.0%；When magnetic field strength is increased to 1600Gs, the volume and weight of permanent magnet is electromagnetism respectively
The 49.8% of coil and 12.7%.
The utility model permanent magnet greatly reduces magnetic device in plasma torch instead of common electromagnetic coil
Volume and weight, so that device volume and weight is respectively reduced 40% and 80% or more；The thermal losses of magnetic device is eliminated simultaneously,
Cooling difficulty is reduced, and improves the electric conversion efficiency of plasma torch.
The above content is only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality
Within protection scope with novel claims.
Claims (9)
1. a kind of direct-current arc constraint control miniaturization magnetic device, which is characterized in that including electrode (1), the one of electrode (1)
End is provided with positioning ring (2), and the other end is provided with screw thread baffle ring (4), the electrode (1) between positioning ring (2) and screw thread baffle ring (4)
On be successively set with magnet assemblies (6) and protective case (7) from inside to outside.
2. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 1, which is characterized in that electrode
(1) it is provided between magnet assemblies (6) magnet holder (3), one end of magnet holder (3) is sleeved on the outer wall of positioning ring (2)
On face, the other end is threadedly coupled with screw thread baffle ring (4).
3. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 2, which is characterized in that positioning ring
(2) be annular structure, be equipped with step structure on the inner and outer wall of positioning ring (2), respectively with electrode (1) and magnet holder
(3) socket connection, has been arranged circumferentially several through-holes along positioning ring (2).
4. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 2, which is characterized in that magnet branch
Frame (3) is Y-shaped structure, with the rear end face of positioning ring (2) and the periphery gap setting of electrode (1).
5. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 4, which is characterized in that magnet branch
One end of frame (3) is provided with groove, and circlip (5) are provided in groove.
6. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 1, which is characterized in that positioning ring
(2) through-hole is provided on, for cooling down the outer wall of the located ring of cooling medium (2) injecting electrode (1).
7. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 1, which is characterized in that group of magnets
Part (6) is spliced by the identical permanent magnet of several internal-and external diameters.
8. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 7, which is characterized in that permanent magnet
Surface be provided with thickness and be more than or equal to 100 μm of the coat of metal.
9. a kind of direct-current arc constraint control miniaturization magnetic device according to claim 1, which is characterized in that protective case
(7) it is straight circular pipe type structure, is located by connecting by the card slot in magnet holder (3) and screw thread baffle ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258663.3U CN208424883U (en) | 2018-08-06 | 2018-08-06 | A kind of direct-current arc constraint control miniaturization magnetic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258663.3U CN208424883U (en) | 2018-08-06 | 2018-08-06 | A kind of direct-current arc constraint control miniaturization magnetic device |
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| CN208424883U true CN208424883U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966473A (en) * | 2018-08-06 | 2018-12-07 | 西安太乙鼎生航天环保科技有限公司 | A kind of miniaturization magnetic device for direct-current arc constraint control |
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2018
- 2018-08-06 CN CN201821258663.3U patent/CN208424883U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966473A (en) * | 2018-08-06 | 2018-12-07 | 西安太乙鼎生航天环保科技有限公司 | A kind of miniaturization magnetic device for direct-current arc constraint control |
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