CN208894439U - Supersonic speed oxy-acetylene explosive combustion nozzle - Google Patents
Supersonic speed oxy-acetylene explosive combustion nozzle Download PDFInfo
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- CN208894439U CN208894439U CN201821187742.XU CN201821187742U CN208894439U CN 208894439 U CN208894439 U CN 208894439U CN 201821187742 U CN201821187742 U CN 201821187742U CN 208894439 U CN208894439 U CN 208894439U
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- carrier gas
- nozzle
- gas channel
- acetylene
- resonantron
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Abstract
The utility model discloses a kind of supersonic speed oxy-acetylene explosive combustion nozzles, including carrier gas channel, grains of sand feed pipe, level-one resonantron, secondary resonances pipe, delivery channel, oxygen channel and acetylene pipeline；Carrier gas channel is located along the same line with level-one resonantron, secondary resonances pipe is located along the same line with delivery channel, the hartmann resonant cavity of right-angled intersection is collectively formed in carrier gas channel, level-one resonantron, secondary resonances pipe and delivery channel, grains of sand feed pipe is arranged perpendicular to carrier gas channel, and be connected to carrier gas channel, oxygen channel and acetylene pipeline are connected to the hartmann resonant cavity intersection of right-angled intersection.The grains of sand can be melted and with the ejection of the state of mucus state or semisolid by the utility model, and can guarantee that the grains of sand gone out have enough impact forces.
Description
Technical field
The utility model discloses a kind of grains of sand melting plant and melting method, especially a kind of supersonic speed oxy-acetylene explosion
Burner noz(zle) and the method for application nozzle realization grains of sand melting.
Background technique
3D printer is also known as three-dimensional printer, is a kind of cumulative manufacturing technology, i.e. a kind of machine of rapid prototyping technology,
The working principle of 3D printer is essentially identical with normal printer, is that " printed material " is controlled to fold layer by layer by computer
It adds up, the blueprint on computer is finally become in kind, this technology is usually in the fields such as mold manufacture, industrial design, quilt
For modeling or for the direct manufacture of some products, presently, there are a variety of 3D printing techniques, common technology includes
Binding material 3 D-printing, photocuring 3 D-printing and melted material 3 D-printing etc..For melted material, existing mode
Generally first high-speed gas impact fusion material will be sprayed using nozzle after material molten export finally to spray in the form of a powder
Out.Such structure is complex, and melting process needs melting plant, needs to connect guiding device, nozzle under melting plant
Guiding device end is generally located on to open melted material injection.Such spray regime arrive melted material can not accurately
Up to impact constituency, melted material is broken up out the inconsistent structure each section intensity for leading to its final molding of its each section speed not
It is identical to the greatest extent.
Laval (Lavalle) superonic flow nozzzle is existing most common aerosolization form of nozzle, it can mainly be such that nozzle obtains
Supersonic airstream is obtained, this is conducive to the refinement of powder.It is that a kind of can be produced in flow field with Hartmann right-angled intersection resonantron
The superonic flow nozzzle of the structure structure of raw high frequency oscillation then can make atomization air flow obtain stable pressure vibration.
Utility model content
Purpose of utility model: the utility model provides a kind of supersonic combustion nozzle, which can be straight
It connects the melting grains of sand and will accurately be ejected into constituency in the grains of sand of mucus state or semisolid；The grains of sand melting method can
Sufficiently the melting grains of sand and effectively control grains of sand jet velocity.
Technical solution: a kind of supersonic speed oxy-acetylene explosive combustion nozzle, including carrier gas channel, level-one resonantron, second level are total
Point-blank, closed secondary resonances pipe and nozzle are located at for vibration tube and nozzle, carrier gas channel and closed level-one resonantron
On same straight line, carrier gas channel, level-one resonantron, secondary resonances pipe, nozzle form the Hartmann twin-stage resonance of right-angled intersection
Pipe, is equipped with spark plug at right-angled intersection, and there is laval to manage adaptive throat's feature for carrier gas channel inlet, grains of sand feed pipe with
Carrier gas channel connection, oxygen channel are connected to acetylene pipeline with the cross junction of twin-stage resonantron, and grains of sand charging is located at carrier gas
Laval manages adaptive throat close to the side of cross junction at entrance.
Wherein, oxygen channel, acetylene pipeline and carrier gas channel center line are in the same plane, and oxygen channel and second
Alkynes pipeline is symmetrical arranged about carrier gas channel.
Wherein, in order to control grains of sand inlet and oxygen and the acetylene amount of pouring, carrier gas channel, grains of sand feed pipe,
Flow valve is provided on oxygen channel or acetylene pipeline.
Wherein, in order to enable impact dynamics is sufficiently large when nozzle sprays the molten state grains of sand, nozzle is integrally in cone, nozzle
Exit diameter of section is minimum, so that outlet melting grains of sand spouting velocity reaches maximum value.Nozzle can also be set close to exit
It sets laval and manages adaptive throat's feature, to further increase the spouting velocity of the melting grains of sand.Nozzle is arranged tapered same
When, carrier gas channel, level-one resonantron and secondary resonances pipe intersection caliber are identical and tangent, carrier gas channel and level-one resonantron with
The side of nozzle is tangent, and the internal pipeline diameter of section of nozzle and secondary resonances pipe intersection is greater than secondary resonances pipe in intersection
Diameter of section.Such structure revolves the grains of sand in conical nozzle inner loop around formation when entering along the side wall of conical nozzle
Stream, to extend the grains of sand in the residence time of nozzle interior, enables the grains of sand sufficiently to melt.
In order to enable the grains of sand can be melted sufficiently, spark plug is provided with multiple, oxygen channel and acetylene along nozzle wall
Pipeline is equipped with the interior conduit that multiple branched pipes are equipped at the height of spark plug respectively with nozzle and is connected to, and arrives in this way in the entrance of nozzle
Outlet can keep the condition of high temperature, so that the grains of sand sprayed obtain sufficient heating melting.
This patent utility model, which also discloses, a kind of utilizes above-mentioned supersonic speed oxy-acetylene explosive combustion nozzle to carry out the grains of sand
The method of melting: include the following steps:
The inlet of grains of sand feed pipe is connected hose by step 1), and hose is embedded to raw material grains of sand pond；
Step 2) each leads into oxygen and acetylene gas, the capacity ratio of oxygen and acetylene in oxygen channel and acetylene pipeline
Example is 1:1~1:1.5；
When temperature of the step 3) at nozzle right-angled intersection is between 1700 DEG C~2000 DEG C, height is passed through in carrier gas channel
Inert gas is pressed, high-pressure inert gas forms high-speed flow in carrier gas channel, so that forming negative pressure in carrier gas channel for the grains of sand
Melt inside sucking twin-stage resonantron and constituency is ejected to by nozzle.
The utility model has the advantages that supersonic speed oxy-acetylene explosive combustion nozzle provided by the utility model can adequately melt the grains of sand
Melt, obtain the grains of sand of mucus state or semisolid, so that when the grains of sand spray there is enough impact forces to impact constituency, and in outside
Coagulation forming.The method of the grains of sand provided by the utility model melting can reasonably using the existing grains of sand in natural environment into
Row 3D printing is formed or is sprayed on corresponding workpiece as coating.
Detailed description of the invention
Fig. 1 is the front sectional view of the utility model embodiment 1；
Fig. 2 is the main view of the utility model embodiment 1；
Fig. 3 is the perspective view of the utility model embodiment 1；
Fig. 4 is the front sectional view of the utility model embodiment 1；
Fig. 5 is the left view of the utility model embodiment 2；
Fig. 6 is the A-A cross-sectional view of the utility model embodiment 2.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of supersonic speed oxy-acetylene explosive combustion nozzle, including carrier gas channel 1, grains of sand feed pipe 2, level-one
Resonantron 3, secondary resonances pipe 4 and nozzle 5, carrier gas channel 1 and closed level-one resonantron 3 point-blank, closed two
Grade resonantron 4 and nozzle 5 are located along the same line, and carrier gas channel 1, level-one resonantron 3, secondary resonances pipe 4, nozzle 5 form ten
The Hartmann twin-stage resonantron of word intersection 9, carrier gas channel 1 and the center line of level-one resonantron 3 are located along the same line, together
The nozzle 5 of sample and the center line of secondary resonances pipe 4 also are located on same straight line.
Spark plug 8 is equipped at cross junction 9, there is 1 inlet of carrier gas channel laval to manage adaptive throat 10, the grains of sand
Feed pipe 2 and 1 vertical connection of carrier gas channel, and grains of sand feed pipe 2 is located at the adaptive of 1 inlet laval pipe of carrier gas channel
Throat 10 is close to the side of right-angled intersection Hartmann twin-stage resonantron.Oxygen channel 6 and acetylene pipeline 7 and twin-stage resonantron
Cross junction connection.Oxygen channel 6, acetylene pipeline 7 and 1 center line of carrier gas channel are in the same plane, and are all provided with
It is placed in conical shell body 11, and oxygen channel 6 and acetylene pipeline 7 are symmetrical arranged about carrier gas channel 1.Spark plug 8 is along spray
5 Sidewall Height direction of mouth is provided with multiple, and oxygen channel 6 and acetylene pipeline 7 are equipped with multiple branched pipes and are equipped with fire with nozzle 5 respectively
Interior conduit connection at the height of flower plug 8.
In order to adjust sand sucking rate and oxygen and acetylene are filled with rate, carrier gas channel 1, grains of sand feed pipe 2,
Flow valve is provided on oxygen channel 6 or acetylene pipeline 7.
In order to enable the molten state grains of sand sprayed can have enough impact force impacts constituency, nozzle 5 is set close to exit
It is equipped with laval and manages adaptive throat's feature.
As shown in Figure 1, carrier gas channel 1 is contracted to throat 10,10 distance of throat all along identical slope from inlet
The distance of 1 inlet of carrier gas channel is the 1/8~1/6 of carrier gas channel overall length, and grains of sand feed pipe 2 is no more than with a distance from inlet
The 1/5 of 1 overall length of carrier gas channel, enables the grains of sand to be fully accelerated atomization, its partial size when the grains of sand reach at cross junction 9
Become smaller, is more conducive to heating melting.
As shown in figure 4, carrier gas channel 1 is contracted to throat 10 all along identical slope from inlet, the edge again of throat 10
Identical slope be expanded to cross junction 9 i.e. carrier gas channel 1 and level-one resonantron 3,4 intersection of secondary resonances pipe always.
Likewise, 5 inside caliber of nozzle is then contracted to its laval close to exit from cross junction 9 manages adaptive throat, then
Outlet is expanded to by the adaptive throat.Such design can make full use of duct length, accelerate gas or the molten state grains of sand.
Embodiment 2
As shown in figure 5, a kind of supersonic speed oxy-acetylene explosive combustion nozzle, including carrier gas channel 1, grains of sand feed pipe 2, level-one
Resonantron 3, secondary resonances pipe 4 and nozzle 5, carrier gas channel 1 and closed level-one resonantron 3 point-blank, closed two
Grade resonantron 4 and nozzle 5 are located along the same line, and carrier gas channel 1, level-one resonantron 3, secondary resonances pipe 4, nozzle 5 form ten
The Hartmann twin-stage resonantron of word intersection 9 is equipped with spark plug 8 at cross junction 9, and 1 inlet of carrier gas channel has
Laval manages adaptive throat 10, grains of sand feed pipe 2 and 1 vertical connection of carrier gas channel, and grains of sand feed pipe 2 is located at carrier gas pipe
The adaptive throat 10 of 1 inlet laval pipe of road is close to the side of right-angled intersection Hartmann twin-stage resonantron.Oxygen channel 6
It is connected to acetylene pipeline 7 with the cross junction of twin-stage resonantron.1 center of oxygen channel 6, acetylene pipeline 7 and carrier gas channel
Line is in the same plane, and oxygen channel 6 and acetylene pipeline 7 are symmetrical arranged about carrier gas channel 1.Spark plug 8 is along nozzle 5
Sidewall Height direction is provided with multiple, and oxygen channel 6 and acetylene pipeline 7 are equipped with multiple branched pipes and are equipped with spark with nozzle 5 respectively
Interior conduit connection at the height of plug 8.
In order to adjust sand sucking rate and oxygen and acetylene are filled with rate, carrier gas channel 1, grains of sand feed pipe 2,
Flow valve is provided on oxygen channel 6 or acetylene pipeline 7.
In order to enable the molten state grains of sand sprayed can have enough impact force impacts constituency, nozzle 5 is set close to exit
It is equipped with laval and manages adaptive throat's feature.
5 internal pipeline of nozzle is integrally in cone in the present embodiment, and 5 exit diameter of section of nozzle is minimum.Nozzle 5 leans on
Nearly exit is equipped with laval and manages adaptive throat's feature.The laval manages adaptive throat's feature
The 1/10~1/12 of 5 total height of nozzle, diameter of section of the nozzle 5 at cross junction 9 are carrier gas channel 1, level-one resonantron 3
Or 1.5~5 times of secondary resonances pipe 4, carrier gas channel 1, level-one resonantron 3 or secondary resonances pipe 4 are at cross junction 9
Section is that round and diameter is equal.Carrier gas channel 1, level-one resonantron 3 and 4 intersection of secondary resonances pipe are tangent, carrier gas channel 1
It is located along the same line with 3 center line of level-one resonantron and tangent with the side of nozzle 5.
The structure type of said nozzle 5 makes when the grains of sand enter at cross junction 9, forms eddy flow, enables the grains of sand
Resting in nozzle for enough longer times is sufficiently melted, and due to mutually condensing after grains of sand melting, weight becomes larger toward tenesmus
The grains of sand for falling, but not melted sufficiently are then moved upwards due to the effect of eddy flow, are sprayed again after sufficiently melting.
A method of grains of sand melting is carried out using the supersonic speed oxy-acetylene explosive combustion nozzle in above-mentioned two embodiment:
Include the following steps:
The inlet of grains of sand feed pipe 2 is connected hose by step 1), and hose is embedded to raw material grains of sand pond；
Step 2) each leads into oxygen and acetylene gas, the capacity of oxygen and acetylene in oxygen channel 6 and acetylene pipeline 7
Ratio is 1:1~1:1.5；
When temperature of the step 3 at nozzle right-angled intersection is between 1700 DEG C~2000 DEG C, height is passed through in carrier gas channel 1
Inert gas is pressed, high-pressure inert gas forms high-speed flow in carrier gas channel 1, so that forming negative pressure in carrier gas channel 1 will be husky
Melting is carried out inside grain sucking twin-stage resonantron and is sprayed by nozzle 5.
Claims (7)
1. a kind of supersonic speed oxy-acetylene explosive combustion nozzle, including carrier gas channel (1), level-one resonantron (3), secondary resonances pipe
(4) and nozzle (5), carrier gas channel (1) and closed level-one resonantron (3) point-blank, closed secondary resonances pipe (4)
It is located along the same line with nozzle (5), carrier gas channel (1), level-one resonantron (3), secondary resonances pipe (4), nozzle (5) form ten
The Hartmann twin-stage resonantron that word intersects is equipped with spark plug (8) at cross junction (9), it is characterised in that: carrier gas channel
(1) there is laval to manage adaptive throat (10) for inlet, and grains of sand feed pipe (2) is connected to carrier gas channel (1), grains of sand feed pipe
(2) it is located at carrier gas channel (1) inlet laval and manages adaptive throat (10) close to the side of cross junction (9), oxygen channel
(6) it is connected to acetylene pipeline (7) with the cross junction of twin-stage resonantron.
2. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 1, it is characterised in that: the oxygen channel (6),
Acetylene pipeline (7) and carrier gas channel (1) center line are in the same plane, and oxygen channel (6) and acetylene pipeline (7) about
Carrier gas channel (1) is symmetrical arranged.
3. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 1, it is characterised in that: the carrier gas channel (1),
Flow valve is provided on grains of sand feed pipe (2), oxygen channel (6) or acetylene pipeline (7).
4. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 1, it is characterised in that: the nozzle (5) is whole
In cone, nozzle (5) exit diameter of section is minimum.
5. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 1, it is characterised in that: the nozzle (5) is whole
In the cone reduced to exit section, nozzle (5) is equipped with laval close to exit and manages adaptive throat's feature.
6. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 4 or 5, it is characterised in that: the carrier gas channel
(1), level-one resonantron (3) is identical and tangent with secondary resonances pipe (4) intersection's caliber, carrier gas channel (1) and level-one resonantron
(3) tangent with the side of nozzle (5), the internal pipeline diameter of section of nozzle (5) and secondary resonances pipe (4) intersection is greater than second level
Diameter of section of the resonantron (4) in intersection.
7. supersonic speed oxy-acetylene explosive combustion nozzle according to claim 1, it is characterised in that: spark plug (8) edge
Nozzle (5) side wall be provided with it is multiple, the oxygen channel (6) and acetylene pipeline (7) be equipped with multiple branched pipes respectively with nozzle
(5) the interior conduit connection at the height equipped with spark plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187742.XU CN208894439U (en) | 2018-07-25 | 2018-07-25 | Supersonic speed oxy-acetylene explosive combustion nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187742.XU CN208894439U (en) | 2018-07-25 | 2018-07-25 | Supersonic speed oxy-acetylene explosive combustion nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208894439U true CN208894439U (en) | 2019-05-24 |
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ID=66568105
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821187742.XU Active CN208894439U (en) | 2018-07-25 | 2018-07-25 | Supersonic speed oxy-acetylene explosive combustion nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108745677A (en) * | 2018-07-25 | 2018-11-06 | 上海莘临科技发展有限公司 | Supersonic speed oxy-acetylene explosive combustion nozzle and grains of sand melting method |
| CN116336504A (en) * | 2023-04-14 | 2023-06-27 | 西北核技术研究所 | Gas-solid combustion nozzle structure with two-dimensional uniform distribution |
-
2018
- 2018-07-25 CN CN201821187742.XU patent/CN208894439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108745677A (en) * | 2018-07-25 | 2018-11-06 | 上海莘临科技发展有限公司 | Supersonic speed oxy-acetylene explosive combustion nozzle and grains of sand melting method |
| CN116336504A (en) * | 2023-04-14 | 2023-06-27 | 西北核技术研究所 | Gas-solid combustion nozzle structure with two-dimensional uniform distribution |
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