CN206839176U - A kind of air intake assembly of nodularization powder high-frequency induction plasma heater - Google Patents
A kind of air intake assembly of nodularization powder high-frequency induction plasma heater Download PDFInfo
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- CN206839176U CN206839176U CN201720532974.3U CN201720532974U CN206839176U CN 206839176 U CN206839176 U CN 206839176U CN 201720532974 U CN201720532974 U CN 201720532974U CN 206839176 U CN206839176 U CN 206839176U
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- central gas
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Abstract
The utility model discloses a kind of air intake assembly of nodularization powder high-frequency induction plasma heater, including：Overhead guard, central gas cyclone, side cyclonic current device and base.Overhead guard, central gas cyclone, side cyclonic current device and base are sequentially coaxially connected from top to bottom；Gas equal flow chamber when being formed between the recessed portion at cyclonic current device lower surface and base upper surface center, the equal flow chamber of central gas is formed between the fovea superior part at overhead guard lower surface center and the outer wall of boss of central gas cyclone upper end；Side cyclonic current device uses axial-rotation fin structure, and it is consistent with side cyclonic current device fin direction of rotation to revolve stomata using tangential rotation air hole structure for central gas cyclone.The utility model provides the heat transfer effect of working gas needed for heater ionization, reinforcing powder and high-temperature plasma air-flow, improves the spheroidization ratio of powder.
Description
Technical field
The utility model belongs to high-temperature plasma technical field, is related to a kind of air inlet of high-frequency induction plasma heater
Component.
Background technology
The preparation method of spherical powder is broadly divided into Physical and chemical method.Wherein, Physical prepares spherical powder technology
Mainly include atomization and plasma method.Liquid phase method, which prepares spherical powder technology, mainly includes spray heating decomposition, carbonyl process
With sol-gal process etc..
Powder present situation made from atomization is complicated, it is difficult to 20 μm of particle diameter ＜ attritive powder is made, it is difficult to obtain high ball
Shape ratio, and be not suitable for the preparation of refractory metal.Spray heating decomposition and sol-gel process (belong to chemical preparation method, deposited
In more serious three wastes problem, and it is also not suitable for the preparation in high-temperature metal or alloy spherical powder.Carbonyl process was applied to
The preparation of race's metal (Fe, Co, Ni) and high melting-point metal (Cr, W, Mo) powder is crossed, the powder size fine uniform of preparation, is had
Very high degree of purity, but easily there are serious agglomeration traits.
Plasma melting and spheroidizing technology is considered as to obtain fine and close, the most effective means of regular spherical particle, plasma
The temperature field of body is more than 5 times of chemical combustion, can melt dystectic metal or alloy material.Plasma spheroidization processing
Technology can be divided into direct-current plasma and the major class of catalytic behavior of materials two according to the mode of excitation of plasma.Compared to straight
Plasma is flowed, high-frequency plasma body spheroidising technology has advantages below：(1) plasma temperature distribution is relatively uniform
It is flat；(2) it is quenched speed height (- 105K/S)；(3) product soilless sticking, product purity are high.Because whole process is in continuous, non-
The state of contact, and high-frequency plasma does not have electrode, thus product can be avoided to introduce impurity, it can obtain high-purity
Product, three-protection design are simple；(4) the speed ratio of high-frequency plasma and plasma torch flame stream is relatively low and compares with belonging to
The plasma of " soft ", therefore possess the longer reaction zone residence time, it is highly beneficial that this heat absorption to powder, which dissolves,；
(5) particle size be evenly distributed, Oxygen potential it is high.By the control to parameter, can obtain Oxygen potential more than 90% product and
Technological process is short, continuous, easily-controllable.
High frequency plasma body heater is the nucleus equipment that high frequency plasma heating prepares spherical powder system, and its work is former
Manage and be：The high frequency electric that high frequency electric source provides produces strong electromagnetic coupled by the coil of reactor in heater so that
Working gas into heater induction zone ionizes, and forms high temperature plasma flame, and the powder to be handled passes through high temperature
During plasma flame, the heating of high-temperature plasma air-flow is received, surface generation is micro- to melt, and is formed under tension spherical
Powder simultaneously carries out the processing such as follow-up cooling.The design of the air inflow, intake method and Inlet Position of working gas adds to guarantee
The formation of thermal ionization effect, control powder in heater, strengthens heat transfer effect of powder and heat plasma air-flow etc. and all plays
Vital effect.Existing intake method can not meet the air inlet demand of high frequency plasma body heater, in air inflow, enter
Existing defects in terms of gas mode and Inlet Position.
Utility model content
Technical problem to be solved in the utility model is：Overcome the deficiencies in the prior art, the utility model provide a kind of
The air intake assembly of nodularization powder high-frequency induction plasma heater, there is provided heater ionization needed for working gas, strengthen powder with
The heat transfer effect of high-temperature plasma air-flow, improve the spheroidization ratio of powder.
Technical scheme is used by the utility model：A kind of air inlet group of nodularization powder high-frequency induction plasma heater
Part, including：Overhead guard, central gas cyclone, side cyclonic current device and base；Overhead guard, central gas cyclone, side cyclonic current device and base
Sequentially coaxially coordinate installation from top to bottom；When being formed between the recessed portion at cyclonic current device lower surface and base upper surface center
The equal flow chamber of gas, it is equal that central gas is formed between the fovea superior part at overhead guard lower surface center and the outer wall of boss on central gas cyclone top
Flow chamber；Gas enters the equal flow chamber of central gas from the central gas airway on overhead guard, and convex by central gas cyclone upper, annular
Radial direction rotation stomata in platform structure makes gas rotating enter interior quartz ampoule；Gas enters from the while gas airway on cyclonic current device
The equal flow chamber of side gas, and gas rotating is entered discharge lamp by the axial-rotation fin in the cyclonic current device lower sleeve portion structural walls of side
Pipe.
The side cyclonic current device is structure as a whole, including two parts, and top is flange arrangement, and bottom is tube-in-tube structure, set
There is axial-rotation fin on the outer wall of barrel structure bottom；While gas airway first along while cyclonic current device radially, then connect from flange arrangement
One side surface of female connector barrel structure passes；The tube-in-tube structure of side cyclonic current device is inserted in discharge lamp through the centre bore of base；
Quartz ampoule in installation in the cyclonic current device central through hole of side, interior quartz ampoule lower end is stretched into discharge lamp.
The central gas cyclone is structure as a whole, including three parts, and middle part is flange arrangement, and bottom is tube-in-tube structure,
Top is the boss structure of ring-type, radially revolves stomata and runs through boss structure side wall；Central gas cyclone lower sleeve portion structure is inserted
In interior quartz ampoule.
The overhead guard is structure as a whole, including two parts, and a part is disc structure, and another part is positioned at disc structure
Cylindrical structure at center, disc structure surface are provided with annular groove along cylindrical structure outer wall；Central gas airway is along overhead guard footpath
To outlet is in the side wall of overhead guard groove；In the centre bore of the cylindrical structure insertion central gas cyclone of overhead guard, overhead guard center
Powder sinking tube is inserted in hole.
Discharge lamp is inserted in the centre hole of base bottom, and base is by centre hole of base relief structure to discharge lamp
Positioned.
Span of the axial-rotation fin along side cyclonic current device axis direction anglec of rotation α is 15 °~30 °, axle
It it is 16~60 to rotating fins quantity.
The rotation direction of the radial direction rotation stomata is identical with axial-rotation fin rotation direction, radially revolves stomata center line and position
The span of angle β between tangent line is 45 °~90 °, and the quantity for radially revolving stomata is 12~32.
The while gas airway while on cyclonic current device has two, two while gas airway on while cyclonic current device central shaft
Symmetrically.
Central gas airway on the overhead guard has two, and two central gas airways are on overhead guard axisymmetrical；It is described
Gap be present between the center bore inner wall of overhead guard cylindrical structure side wall and central gas cyclone.
Also include O-ring seal, O-ring seal is on centre hole of base inwall, base upper surface, side cyclonic current device
Surface, side cyclonic current device center bore inner wall, central gas cyclone central flange structure upper surface, central gas cyclone upper boss
In the O-ring seal groove of structure upper surface.
The utility model compared with prior art the advantages of be：
(1) cyclonic current device in side of the present utility model uses axial-rotation fin structure, and the structure air inlet area is big, in
The part side gas of the heart produces ionization, while the gas of discharge tube inner wall section forms one layer of cold air film, discharge lamp is carried out cold
But and the powder after melted by heating is prevented to be adhered on discharge lamp inwall.
(2) central gas cyclone of the present utility model is using tangential rotation air hole structure, the structure anglec of rotation adjustable range
Width, advantageously ensures that the enthalpy and stability of plasma flow, strengthen by powder sinking tube enter the wind powder air-flow of heater with
The mixing of central gas air-flow, the discrete effect of powder is improved, reduces the reunion of powder.
(3) carrier gas and powder of the utility model into heater mix after entering heater with central gas, pass through regulation
Central gas spin intensity, can control stroke of the powder in high temperature plasma flame, realize it is different exchange heat, micro- warm nodularization
Effect.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model device；
Fig. 2 (a) is the schematic diagram of side cyclonic current device；Fig. 2 (b) is I positions enlarged drawing in Fig. 2 (a)；
Fig. 3 is Fig. 2 (a) A-A positions sectional view；
The schematic diagram of cyclonic current device centered on Fig. 4；
Fig. 5 is Fig. 4 B-B positions sectional view.
Embodiment
Utility model is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of air intake assembly of nodularization powder high-frequency induction plasma heater, including：Overhead guard 1, center
Cyclonic current device 3, side cyclonic current device 4 and base 6.Overhead guard 1, central gas cyclone 3, side cyclonic current device 4 and base 6 from top to bottom according to
Secondary coaxial cooperation connection, each several part upper and lower end face is sealed by O-ring seal 7；
As shown in Fig. 2 (a), Fig. 2 (b) and Fig. 3, side cyclonic current device 4 is structure as a whole, including two parts, and top is flange
Structure, bottom are thin walled cylinder body structure, and thin walled cylinder body bottom outer ring portion makes gas rotating using axial-rotation fin 41；Side gas
Airway 42 first along the radial direction of side cyclonic current device 4, then passes, two side gas from a side surface of flange arrangement connection thin walled cylinder body
Airway 42 is substantially symmetrical about its central axis on side cyclonic current device 4；There is the bulge-structure of annular in the centre bore of base 6, discharge lamp 8 inserts
In the centre bore of base 6, positioned by bulge-structure, and realized and sealed by O-ring seal 7；The thin walled cylinder body of side cyclonic current device 4
Through in the centre bore insertion discharge lamp 8 of base 6, the recessed portion of the lower surface of side cyclonic current device 4 and the upper surface center of base 6
Between formed the equal flow chamber 5 of side gas；Working gas in the equal flow chamber 5 of side gas discharges uniformly through axial-rotation fin 41 along heater
The inwall of fluorescent tube 8 rotates into heater.Anglec of rotation α is designed as 15 ° to the axial-rotation fin 41 of side cyclonic current device 4 in the axial direction
~30 °, the quantity of axial-rotation fin 41 is 16~60.Interior quartz ampoule 9 be arranged on while cyclonic current device 4 along while the axle of cyclonic current device 4
In the through hole of line, upper end realizes and sealed that lower end is stretched into discharge lamp 8 by O-ring seal 7 and through-hole wall.Side cyclone
Surface that the stream boss flange structure of device 4 contacts with central gas cyclone 3, O-ring seal groove 33,43 is provided with center bore inner wall；
O-ring seal groove is provided with the inwall that surface that base 6 contacts with side cyclonic current device 4, centre bore contact with discharge lamp 8
33、43。
Overhead guard 1 is structure as a whole, including two parts, and a part is disc structure, and another part is cylindrical structure, cylinder knot
Structure is located at disc structure center and coaxial with disc structure, has a circle groove along cylinder outer wall on disk, is opened along the diameter of overhead guard 1
There are two central gas airways 32, two central gas airways 32 export position on the axisymmetrical of overhead guard 1, central gas airway 32
In in the side wall of the groove of overhead guard 1.In the centre bore of the cylindrical structure insertion central gas cyclone 3 of overhead guard 1, cylindrical wall revolves with the motive
Gap be present between the center bore inner wall of stream device 3.Recess sidewall and the outer wall of boss of the upper end of central gas cyclone 3 on overhead guard 1
Between formed the equal flow chamber 2 of central gas.Powder sinking tube 13 is inserted in the centre bore of overhead guard 1, is passed through in discharge lamp 8.
As shown in Figure 4 and Figure 5, central gas cyclone 3 is structure as a whole, including three parts, and middle part is flange arrangement, bottom
For thin walled cylinder body structure, top is annular boss structure, and three parts are coaxial, using radially rotation stomata on the plateau sidewall on top
31 make gas rotating, and it is the through hole through plateau sidewall radially to revolve stomata 31；Quartz in the insertion of the lower sleeve portion of central gas cyclone 3
In pipe 9, the working gas in the equal flow chamber 2 of central gas rotates into uniformly through radial direction rotation stomata 31 along the interior inwall of quartz ampoule 9 to be added
Hot device.Radially the rotation direction (left or right rotation) of rotation stomata 31 is identical with the rotation direction of axial-rotation fin 41 of side cyclonic current device 4, radially
Angle β between the rotation center line of stomata 31 and position tangent line is designed as 45~90 °, and it is 12~32 radially to revolve the quantity of stomata 31
It is individual.O-ring seal groove 33,43 is provided with the surface that the boss structure of central gas cyclone 3, flange arrangement contact with overhead guard 1；
The utility model is applied to nodularization powder high-frequency induction plasma heater, and utility model works principle is：Side
Working gas in the equal flow chamber 5 of gas is uniformly through the axis rotating fins 41 of side cyclonic current device 4 along the inwall of heater discharge lamp 8
Rotate into heater, the working gas in the equal flow chamber 2 of central gas revolves the edge of stomata 31 uniformly through the radial direction of central gas cyclone 3
The interior inwall of quartz ampoule 9 rotates into heater, and inductance coil 10 is in the coaxial winding arrangement in the periphery of discharge lamp 8, inductance coil 10
End is connected with high frequency electric source, when the high-frequency alternating current of high frequency electric source output is by inductance coil 10, in discharge lamp
Region corresponding to inductance coil 10 produces strong electromagnetic coupled in pipe 8, and the working gas in the region, which produces, to be ionized and discharge
Joule heat, forms the high frequency plasma flame 11 of high temperature, and carrier gas 12 carries the powder to be handled and enters high frequency by powder sinking tube 13
In plasma flame 11, the generation of powder generating surface is micro- to melt, and forms spherical powder under tension and is sprayed from heater
Go out into lower procedure and cooled down and collected.The air inlet area of side cyclonic current device 4 is big, produces ionization by paracentral part, leans on
The gas of the nearly inner wall section of discharge lamp 8 forms one layer of cold air film, after being cooled down to discharge lamp 8 and prevent melted by heating
Powder is adhered on the inwall of discharge lamp 8.The anglec of rotation adjustable range of central gas cyclone 3 is wide, can ensure plasma gas
The enthalpy and stability of stream, be advantageous to reinforcing and the wind powder air-flow of heater and mixing for central gas air-flow are entered by powder sinking tube 13
Close, improve the discrete effect of powder, reduce the reunion of powder, at the same enter the carrier gas of heater and powder enter after heater with
The central gas mixing of ionization, by adjusting central gas spin intensity, can control row of the powder in high temperature plasma flame 11
Journey, realize it is different exchange heat, micro- warm nodularization effect.
The unspecified technology of the utility model specification belongs to general knowledge as well known to those skilled in the art.
Claims (10)
- A kind of 1. air intake assembly of nodularization powder high-frequency induction plasma heater, it is characterised in that including：Overhead guard (1), center Cyclonic current device (3), side cyclonic current device (4) and base (6)；Overhead guard (1), central gas cyclone (3), side cyclonic current device (4) and bottom Seat (6) sequentially coaxially coordinates installation from top to bottom；The lower concave part of side cyclonic current device (4) lower surface and base (6) upper surface center / the equal flow chamber of side gas (5) being formed, the fovea superior part at overhead guard (1) lower surface center is convex with central gas cyclone (3) top The equal flow chamber of central gas (2) is formed between platform outer wall；Gas flows from the central gas airway (32) on overhead guard (1) into central gas Room (2), and made by the radial direction rotation stomata (31) on central gas cyclone (3) upper, annular boss structure in gas rotating entrance Quartz ampoule (9)；Gas from while on cyclonic current device (4) while gas airway (42) enter the equal flow chamber of side gas (5), and pass through side cyclone Axial-rotation fin (41) in stream device (4) lower sleeve portion structural walls makes gas rotating enter discharge lamp (8).
- 2. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 1, its feature exist In：The side cyclonic current device (4) is structure as a whole, including two parts, and top is flange arrangement, and bottom is tube-in-tube structure, sleeve There is axial-rotation fin (41) on structure bottom outer wall；While gas airway (42) first along while cyclonic current device (4) radially, then from method One side surface of blue structure branch sleeve structure passes；The tube-in-tube structure of side cyclonic current device (4) is inserted through the centre bore of base (6) Enter in discharge lamp (8)；Quartz ampoule (9) in installation in side cyclonic current device (4) central through hole, interior quartz ampoule (9) lower end, which is stretched into, puts In electric pipe (8).
- 3. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 1 or 2, its feature It is：The central gas cyclone (3) is structure as a whole, including three parts, and middle part is flange arrangement, and bottom is tube-in-tube structure, Top is the boss structure of ring-type, radially revolves stomata (31) and runs through boss structure side wall；Central gas cyclone (3) lower sleeve portion knot In structure insertion in quartz ampoule (9).
- 4. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 1 or 2, its feature It is：The overhead guard (1) is structure as a whole, including two parts, and a part is disc structure, and another part is positioned at disc structure Cylindrical structure at center, disc structure surface are provided with annular groove along cylindrical structure outer wall；Central gas airway (32) edge top Cover (1) radially, outlet is in the side wall of overhead guard (1) groove；The cylindrical structure insertion central gas cyclone (3) of overhead guard (1) In centre bore, insertion powder sinking tube (13) in overhead guard (1) centre bore.
- 5. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 1 or 2, its feature It is：Base (6) the centre bore bottom insertion discharge lamp (8), base (6) pass through base (6) centre bore relief structure Discharge lamp (8) is positioned.
- 6. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 2, its feature exist In：Span of the axial-rotation fin (41) along side cyclonic current device (4) axis direction anglec of rotation α is 15 °~30 °, Axial-rotation fin (41) quantity is 16~60.
- 7. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 3, its feature exist In, the rotation direction of radial direction rotation stomata (31) is identical with axial-rotation fin (41) rotation direction, radially revolve stomata (31) center line and The span of angle β between the tangent line of position is 45 °~90 °, and the quantity for radially revolving stomata (31) is 12~32.
- 8. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 2, its feature exist In：It is described while on cyclonic current device (4) while gas airway (42) have two, two while gas airway (42) on while cyclonic current device (4) it is substantially symmetrical about its central axis.
- 9. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 4, its feature exist In the central gas airway (32) on the overhead guard (1) has two, and two central gas airways (32) are on overhead guard (1) axis Symmetrically；Gap be present between overhead guard (1) the cylindrical structure side wall and the center bore inner wall of central gas cyclone (3).
- 10. a kind of air intake assembly of nodularization powder high-frequency induction plasma heater according to claim 1 or 2, it is special Sign is, in addition to O-ring seal (7), O-ring seal (7) be arranged on base (6) center bore inner wall, base (6) upper surface, While cyclonic current device (4) upper surface, while cyclonic current device (4) center bore inner wall, central gas cyclone (3) central flange structure upper table Face, the O-ring seal groove (33,43) of central gas cyclone (3) upper boss structure upper surface are interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720532974.3U CN206839176U (en) | 2017-05-15 | 2017-05-15 | A kind of air intake assembly of nodularization powder high-frequency induction plasma heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720532974.3U CN206839176U (en) | 2017-05-15 | 2017-05-15 | A kind of air intake assembly of nodularization powder high-frequency induction plasma heater |
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| Publication Number | Publication Date |
|---|---|
| CN206839176U true CN206839176U (en) | 2018-01-05 |
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ID=60796141
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| CN201720532974.3U Active CN206839176U (en) | 2017-05-15 | 2017-05-15 | A kind of air intake assembly of nodularization powder high-frequency induction plasma heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020386A (en) * | 2017-05-15 | 2017-08-08 | 中国航天空气动力技术研究院 | A kind of air intake assembly of nodularization powder high-frequency induction plasma heater |
| CN110402008A (en) * | 2019-08-26 | 2019-11-01 | 贵州正业龙腾新材料开发有限公司 | A kind of cooling gas distributor suitable for high frequency plasma torch |
-
2017
- 2017-05-15 CN CN201720532974.3U patent/CN206839176U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020386A (en) * | 2017-05-15 | 2017-08-08 | 中国航天空气动力技术研究院 | A kind of air intake assembly of nodularization powder high-frequency induction plasma heater |
| CN110402008A (en) * | 2019-08-26 | 2019-11-01 | 贵州正业龙腾新材料开发有限公司 | A kind of cooling gas distributor suitable for high frequency plasma torch |
| CN110402008B (en) * | 2019-08-26 | 2024-02-06 | 贵州正业龙腾新材料开发有限公司 | Cooling gas distribution device suitable for high-frequency plasma torch |
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Effective date of registration: 20210422 Address after: 618 Liangjiang Avenue, Yubei District, Chongqing Patentee after: Yunhang times (Chongqing) Technology Co.,Ltd. Address before: 100074, No. 17 Yungang West Road, Beijing, Fengtai District Patentee before: CHINA ACADEMY OF AEROSPACE AERODYNAMICS |