CN111721495B - Novel particle of nano particle plane laser scattering experiment generates device - Google Patents
Novel particle of nano particle plane laser scattering experiment generates device Download PDFInfo
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- CN111721495B CN111721495B CN202010547043.7A CN202010547043A CN111721495B CN 111721495 B CN111721495 B CN 111721495B CN 202010547043 A CN202010547043 A CN 202010547043A CN 111721495 B CN111721495 B CN 111721495B
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- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- G01M9/067—Measuring arrangements specially adapted for aerodynamic testing dealing with flow visualisation
Abstract
The invention discloses a novel particle generation device for a nanoparticle plane laser scattering experiment, which comprises a main body and a heater, wherein an equivalent channel is arranged above the heater, a booster fan is fixedly arranged in the middle of the equivalent channel, the top of the equivalent channel extends upwards to form a contraction channel with a large lower end and a small upper end, one end of the contraction channel, which is far away from the equivalent channel, is communicated with a dry ice bin, one end of the dry ice bin, which is far away from the contraction channel, is provided with a mixed gas outlet, the mixed gas outlet is communicated with a gas outlet, and the other end of the gas outlet is communicated with a water mist concentration adjusting device. According to the novel particle generation device for the nanoparticle plane laser scattering experiment, steam liquid is heated by the heater to form heat vapor, the heat vapor enters the dry ice bin through the equivalent channel and is subjected to physical reaction with the dry ice, the heat in the heat vapor is quickly absorbed in the sublimation process of the dry ice, the heat vapor is condensed into nanoscale water mist, and the nanoscale water mist is continuously crushed under the continuous impact of a large amount of generated carbon dioxide, so that the diameter of water mist particles is greatly reduced.
Description
Technical Field
The invention relates to the technical field of optical flow display experiments, in particular to a novel particle generation device for a nanoparticle plane laser scattering experiment.
Background
In order to promote the continuous progress of aerospace technology, accurate optical measurement on a complex flow field is beneficial to improving the understanding and analysis on the flow mechanism. The nano particles have small particle size, large specific surface area and certain novel physicochemical properties due to ordered arrangement of internal atoms, present unique volume effect and surface effect, and have unique performance characteristics of zero-dimensional fullerene, one-dimensional carbon nano tube and two-dimensional graphene, thereby having wide application prospect. In a nano particle plane laser scattering optical experiment, the smaller the trace particles are, the better the following performance of the particles is, and the more the measurement accuracy can be improved.
At present, in the prior art, titanium dioxide particles are used as tracer particles, but the quality and the diameter of the titanium dioxide particles are still large, the particles of a near-wall surface layer and a mixed layer still cannot be removed, the experimental effect is influenced, and the fine experimental result of a complex flow field cannot be obtained. Therefore, it is necessary to design a novel particle generating apparatus for nanoparticle plane laser scattering experiments.
Disclosure of Invention
Aiming at the technical problem to be solved, the invention provides a novel particle generation device for a nano particle plane laser scattering experiment, which utilizes the physical sublimation heat absorption reaction between dry ice and high-temperature hot vapor to quickly absorb the heat in the hot vapor and condense the heat into water mist, and simultaneously, under the impact action of a large amount of carbon dioxide, the water mist is continuously crushed, thereby greatly reducing the diameter of water mist particles.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a novel particle of nano particle plane laser scattering experiment generates device, places in including the main part the heater of main part, it is equipped with steam liquid to be located the heater top in the main part, the equivalence passageway has been seted up to the heater top, the middle part fixed mounting of equivalence passageway has booster fan, the top upwards extends the shrink passageway that forms the big end in lower extreme, the shrink passageway is kept away from the one end intercommunication dry ice bin of equivalence passageway, dry ice bin keeps away from the gas mixture has been seted up to the one end of shrink passageway and has been bored, the gas mixture is bored intercommunication gas outlet, the gas outlet other end intercommunication water smoke concentration adjusting device.
Furthermore, the water mist concentration adjusting device comprises a lower partition plate which is arranged above the heater and is positioned on one side far away from the equivalent channel, a lower diffusion section communicated with the equivalent channel is arranged above the lower partition plate, one end, far away from the equivalent channel, of the lower diffusion section is connected with a lower ventilation channel, the other end of the lower ventilation channel is communicated with a mixed gas outlet hole and a gas outlet, and an adjusting valve with adjustable opening degree is fixedly arranged in the middle of the lower ventilation channel.
Further, assuming that the diameter of the air outlet is D1, the diameter of the mixed gas outlet is D2, the diameter of the small end of the contraction channel is D3, and the diameter of the large end of the contraction channel is D4, wherein,
the diameter range of the mixed gas outlet hole is as follows: 1.5D1 is more than or equal to D2 is more than or equal to 1.2D 1;
the diameter of the large end of the contraction channel has the following value range: d4 is more than or equal to 4D 1;
the diameter of the small end of the contraction channel has the following value range: 0.6D4 is more than or equal to D3 is more than or equal to 0.3D 4.
Furthermore, the particle generating device also comprises a reticular clapboard fixedly arranged between the contraction channel and the dry ice bin, and the top of the dry ice bin is provided with an openable feeding cover.
Furthermore, the reticular baffle is made of any one of stainless steel, asbestos, mica, marble and glass, a plurality of meshes are uniformly distributed on the reticular baffle, and the diameter of each mesh is less than or equal to 2 mm.
Further, the feeding cover is in threaded sealing connection or in buckle sealing connection with the dry ice bin.
Further, the height of the contraction channel is H4, and the height difference between the lower edge of the mixed gas outlet and the lower edge of the dry ice bin is H3; wherein the content of the first and second substances,
the height of the constricting channel ranges from: 1.5D4 is more than or equal to H4 is more than or equal to 0.8D 4;
the difference value range of the height between the lower edge of the mixed gas outlet and the lower edge of the dry ice bin is as follows: 4D3 is more than or equal to H3 is more than or equal to 2D 3.
Further, the vapor liquid is any one of water, a blended liquid of acetone and water, and a blended liquid of iodine and water.
Further, the lower baffle plate shields 60% -80% of the area right above the heater.
Furthermore, the heating power of the heater is adjustable, and the rated power is not less than 500W.
Compared with the prior art, the invention has the advantages that:
the novel particle generation device for the nanoparticle plane laser scattering experiment provided by the invention heats steam liquid through the heater to form hot steam, enters the dry ice bin through the equivalent channel, the contraction channel and the mesh partition plate and performs physical reaction with dry ice in the dry ice bin, and the heat in the hot steam is quickly absorbed in the dry ice sublimation process to condense the hot steam into nanoscale water mist which is continuously crushed under the impact of a large amount of generated carbon dioxide, so that the diameter of water mist particles is greatly reduced;
the high-pressure carbon dioxide and water mist mixed gas generated by the particle generating device provided by the invention has good follow-up property and is continuous and stable, is suitable to be used as a tracer particle in a nano particle plane laser scattering optical experiment, can obtain a fine experimental result of a complex flow field, and has strong scientific research value; on the other hand, the dry ice and the vapor liquid belong to easily obtained experimental materials, so that the experimental process is safer and more environment-friendly, and the hidden health trouble caused by the fact that the nano solid particles are absorbed into a human body is effectively avoided;
thirdly, the mass fraction of the water mist in the mixed gas of the carbon dioxide and the water mist is adjusted by combining the power adjustment of the heater, the opening adjustment of the adjusting valve and the rotating speed adjustment of the booster fan, and the adjustment is flexible, quick, convenient and reliable;
fourthly, the invention utilizes the special profile design layout in the particle generating device to form natural convection airflow on the surface of the steam liquid, which is beneficial to quickly delivering the heated hot steam to the dry ice bin, thereby effectively reducing energy loss.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of a particle generation device for a novel nanoparticle plane laser scattering experiment according to the present invention;
1. a heater; 2. a vapor liquid; 3. an equivalent channel; 4. a booster fan; 5. a constricting channel; 6. a mesh-like separator; 7. a dry ice bin; 8. a feeding cover; 9. a lower partition plate; 10. a lower diffusion section; 11. a lower vent passage; 12. adjusting the valve; 13. dry ice; 14. a mixed gas outlet; 15. and an air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; the connection can be mechanical connection, electrical connection, physical connection or wireless communication connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example one
The particle generation device for the novel nanoparticle plane laser scattering experiment shown in the attached figure 1 is suitable for the nanoparticle plane laser scattering optical experiment, and mainly comprises a heater 1, an equivalent channel 3, a booster fan 4, a contraction channel 5, a net-shaped partition plate 6, a dry ice bin 7, a feeding cover 8, a lower partition plate 9, a lower diffusion section 10, a lower ventilation channel 11, an adjusting valve 12, a mixed gas outlet 14 and a gas outlet 15, wherein a vapor liquid 2 and dry ice 13 are required; in this embodiment, the vapor liquid 2 is water; the particle generation device in the embodiment adopts dry ice and water as particle generation materials, so that the materials are easy to obtain, the experimental process is safer and more environment-friendly, and the hidden health hazard caused by the fact that nano solid particles are absorbed into a human body is effectively avoided; adopt this embodiment the high pressure carbon dioxide and the mist that the device produced has fine followability and lasting stable, is fit for as the tracer particle in the experiment of nano particle plane laser scattering optics, can obtain the meticulous experimental result in complicated flow field.
In other embodiments of the present invention, the vapor liquid 2 is a liquid mixture of acetone and water or a liquid mixture of iodine and water, which can generate vapor dyeing effect. Thereby have acetone or iodine in the steam and can produce the burning effect under the effect of laser and carry out the sign to the granule, volume expansion behind the liquid heating, simultaneously the dry ice 13 volume also sharply expands after sublimating, consequently the particle generates device internal pressure after the work and will steep rise to improve gas outlet 15 department's mist's speed, be favorable to these nanometer diameter granule and wind-tunnel air mixing to improve the tracer effect that flows.
More specifically, the heater 1 is used for heating water to evaporate the water into steam, the power is adjustable, the rated power is 800W, an equivalent channel 3 is arranged above the water, and the sizes of the channels from the water surface to the starting end of the contraction channel 5 are the same. A booster fan 4 with adjustable rotating speed is fixedly installed in the middle of the equivalent channel 3, the top of the booster fan extends upwards to form a contraction channel 5 with a large lower end and a small upper end, one end, far away from the equivalent channel 3, of the contraction channel 5 is communicated with a dry ice bin 7 placed with dry ice 13, and water vapor enters the dry ice bin 7 from the equivalent channel 3 through the contraction channel 5 under the suction action of the booster fan 4; the dry ice 13 in the dry ice bin 7 and the hot water vapor are subjected to physical reaction, the dry ice 13 absorbs heat and atomizes the hot water vapor into nano-scale water mist, and a large amount of carbon dioxide generated after the dry ice 13 reacts continuously smashes and refines water mist particles, so that the diameter of the water mist particles is greatly reduced, and the pressure in the dry ice bin 7 is improved; and one end of the dry ice bin 7, which is far away from the contraction channel 5, is provided with a mixed gas outlet 14, the top of the dry ice bin is provided with an openable feeding cover 8, the pressure in the dry ice bin 7 is increased to form high pressure for the mixed gas of carbon dioxide and water mist in the bin, and after the mixed gas is sprayed out from the mixed gas outlet 14, a part of the mixed gas is sprayed out from the gas outlet 15, and a part of the mixed gas flows back from the lower ventilation channel 11 to form circulating gas flow.
Preferably, in order to adjust the concentration of water mist in the carbon dioxide and water mist mixed gas, a water mist concentration adjusting device is communicated with the other end of the gas outlet 15, the water mist concentration adjusting device comprises a lower partition plate 9 which is arranged above the vapor liquid 2 and is positioned on the other side of the equivalent channel 3, a lower diffuser section 10 communicated with the equivalent channel 3 is arranged above the lower partition plate 9, one end, far away from the equivalent channel 3, of the lower diffuser section 10 is connected with a lower vent channel 11, the other end of the lower vent channel 11 is converged with a mixed gas outlet 14 and communicated with the gas outlet 15, an adjusting valve 12 with adjustable opening degree is fixedly arranged in the middle of the lower vent channel 11, and when the mixed gas of carbon dioxide and water mist is sprayed out from the mixed gas outlet 14, the flow rate and the flow rate of the mixed gas entering the lower vent channel 11 are adjusted and controlled by adjusting the opening degree of the adjusting valve 12; in the embodiment, the mass fraction of the water mist in the mixed gas of the carbon dioxide and the water mist is adjusted by combining the power adjustment of the heater 1, the opening adjustment of the adjusting valve 12 and the rotation speed adjustment of the booster fan 4. The flow rate of the whole system and the internal pressure of the device can be controlled by the opening degrees of different regulating valves, when the opening degrees are increased, more mixed gas flows through the surface of the steam liquid 2 to drive high-temperature steam to enter the dry ice bin 7, and therefore more mixed gas is generated.
Preferably, a mesh-shaped partition plate 6 is fixedly installed between the contraction channel 5 and the dry ice bin 7, the mesh-shaped partition plate 6 is made of any one of stainless steel, asbestos, mica, marble and glass, and more preferably, the mesh-shaped partition plate is made of stainless steel; a plurality of meshes are uniformly distributed on the reticular clapboard 6, and the diameter of each mesh is smaller than or equal to 2mm, so that the passing of water vapor is not influenced, and the water vapor can uniformly enter the dry ice bin 7.
Preferably, add feed lid 8 and dry ice storehouse 7 thread sealing connection, the top of dry ice storehouse 7 is equipped with the external screw thread promptly, and the inside wall that adds feed lid 8 is equipped with the internal thread, when needs put the dry ice additional, only need unscrew add feed lid 8 can, add feed lid 8 at other times and all be in sealed closed condition.
In another embodiment of the invention, the feeding cover 8 is connected with the dry ice bin 7 in a sealing manner through a buckle, when dry ice needs to be added, only the buckle needs to be loosened, and the feeding cover 8 is in a sealing closed state at other times.
Preferably, the lower partition plate 9 covers 60% -80% of the area right above the heater 1, the design premise is that the size of the equivalent channel 3 is not influenced by water evaporation and escape, the lower diffusion section 10 can be formed at the same time, the lower diffusion section 10 is a micro-expansion channel, the aperture is gradually reduced from the lower vent channel 11 to the equivalent channel 3 to form a horn shape, and more water surface contact and high-temperature steam driving are achieved.
With regard to the outlet opening 15, the mixture outlet opening 14, the outlet diameter and the inlet diameter of the constricted passage 5: assuming that the diameter of the air outlet 15 is D1, the diameter of the mixture outlet 14 is D2, the outlet diameter of the convergent channel 5 is D3, and the inlet diameter is D4, in this embodiment, D1 is 50 mm;
the diameter of the mixture outlet hole 14 ranges from: 1.5D1 is not less than D2 not less than 1.2D1, that is, 75mm is not less than D2 not less than 60mm, in this embodiment, D2 is 1.2D1 is 60mm, which is convenient for the mixed gas sprayed from the mixed gas outlet 14 to be divided into two parts, one part leads to the gas outlet 15, and the other part leads to the lower ventilation channel 11;
the diameter of the large end of the constricted passage 5 ranges: d4 is more than or equal to 4D1, namely D4 is more than or equal to 200mm, in the embodiment, D4 is more than or equal to 4D1 is more than or equal to 200 mm;
the diameter of the small end of the constricted passage 5 ranges: 0.6D4 is more than or equal to D3 and more than or equal to 0.3D4, namely 120mm is more than or equal to D3 and more than or equal to 60mm, and in the embodiment, D3 is equal to 0.3D4 which is equal to 60 mm;
the design of D3 and D4 facilitates the collection of water vapor entering from the iso-channel 3 and into the dry ice bin 7, creating a shock to the dry ice 13.
The height difference between the height of the shrink channel 5 and the height of the lower edge of the mixture outlet opening 14 and the lower edge of the dry ice bin 7 is: setting the height of the contraction channel 5 to be H4, and setting the height difference between the lower edge of the mixed gas outlet hole 14 and the lower edge of the dry ice bin 7 to be H3;
the height of the constricting channel 5 ranges from: 1.5D4 is more than or equal to H4 and more than or equal to 0.8D4, namely 300mm is more than or equal to H4 and more than or equal to 160mm, in the embodiment, H4 is more than or equal to 0.8D4 is more than or equal to 160mm, so that the water vapor can be conveniently collected and accelerated in the section 5 of the contraction channel;
the difference of the height of the lower edge of the mixed gas outlet hole 14 and the lower edge of the dry ice bin 7 is as follows: 4D3 is more than or equal to H3 and more than or equal to 2D3, namely 240mm is more than or equal to H3 and more than or equal to 120mm, and in the embodiment, H3-2D 3-120 mm facilitates water vapor to smoothly enter the dry ice bin 7 and to physically react with the dry ice 13.
The specific using process of the particle generating device for the novel nano particle plane laser scattering experiment is as follows: the power supply is started, the heater 1 starts to heat water to generate hot water vapor, the water vapor is pumped upwards through the equivalent channel 3, the contraction channel 5 and the mesh partition plate 6 by the booster fan 4 to enter the dry ice bin 7 and physically reacts with dry ice 13 in the dry ice bin 7, the dry ice 13 absorbs heat to atomize the water vapor into nano-scale water mist, a large amount of generated carbon dioxide after the reaction of the dry ice 13 continuously smashes and refines water mist particles, the pressure in the dry ice bin 7 is increased, and mixed gas of the carbon dioxide and the water mist is sprayed out of the mixed gas outlet 14 under the action of high pressure; after the air is sprayed out, a part of the air is sprayed out from the air outlet 15, and a part of the air flows back from the lower ventilation channel 11 to form circulating air flow; the mixed gas with more flows enters the dry ice bin 7 through the surface of the steam liquid level to generate more gas, so that the concentration of water mist in the mixed gas is adjusted, formed nano particles are sprayed out from the gas outlet 15, and the particle generation of a nano particle plane laser scattering experiment is completed.
Example two
The particle generating device for the novel nanoparticle plane laser scattering experiment shown in fig. 1 is suitable for a nanoparticle plane laser scattering optical experiment, and mainly comprises a heater 1, an equivalent channel 3, a booster fan 4, a contraction channel 5, a mesh-shaped partition plate 6, a dry ice bin 7, a feeding cover 8, a lower partition plate 9, a lower diffusion section 10, a lower ventilation channel 11, an adjusting valve 12, a mixed gas outlet 14 and a gas outlet 15, wherein a vapor liquid 2 and dry ice 13 are required.
The difference from the first embodiment is that: diameter of the mixture outlet hole 14: D2-1.5D 1-75 mm; large end diameter of constricted passage 5: D4-6D 1-300 mm; small end diameter of constricted passage 5: D3-0.6D 4-180 mm; height of the constricted passage 5: H4-1.5D 4-450 mm; height difference between the lower edge of the mixed gas outlet hole 14 and the lower edge of the dry ice bin 7: H3-4D 3-720 mm to achieve larger scale particle generation, and other parts and use process are the same as in example one.
EXAMPLE III
The particle generating device for the novel nanoparticle plane laser scattering experiment shown in fig. 1 is suitable for a nanoparticle plane laser scattering optical experiment, and mainly comprises a heater 1, an equivalent channel 3, a booster fan 4, a contraction channel 5, a mesh-shaped partition plate 6, a dry ice bin 7, a feeding cover 8, a lower partition plate 9, a lower diffusion section 10, a lower ventilation channel 11, an adjusting valve 12, a mixed gas outlet 14 and a gas outlet 15, wherein a vapor liquid 2 and dry ice 13 are required.
The difference from the first embodiment is that: the diameter of the air outlet 15 is D1-80 mm, the rated power of the heater 1 is 1500W to realize faster particle generation, and other parts and using processes are the same as those of the first embodiment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A novel particle of nano particle plane laser scattering experiment generates device, place heater (1) in including the main part in and, its characterized in that: equivalent channel (3) have been seted up to heater (1) top, the middle part fixed mounting of equivalent channel (3) has booster fan (4), the top upwards extends and forms big little shrink channel (5) in upper end of lower extreme, shrink channel (5) are kept away from the one end intercommunication dry ice storehouse (7) of equivalent channel (3), dry ice storehouse (7) are kept away from the one end of shrink channel (5) has been seted up the gas mixture and has been bored hole (14), the gas mixture is bored hole (14) and is communicate gas outlet (15), gas outlet (15) other end intercommunication water smoke concentration adjusting device.
2. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 1, wherein: the water mist concentration adjusting device comprises a lower partition plate (9) which is arranged above the heater (1) and is located at one side far away from the equivalent channel (3), a lower diffusion section (10) communicated with the equivalent channel (3) is arranged above the lower partition plate (9), one end, far away from the equivalent channel (3), of the lower diffusion section (10) is connected with a lower ventilation channel (11), the other end of the lower ventilation channel (11) is communicated with a mixed gas outlet (14) and a gas outlet (15), and an opening-adjustable adjusting valve (12) is fixedly arranged in the middle of the lower ventilation channel.
3. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 2, wherein: assuming that the diameter of the air outlet (15) is D1, the diameter of the mixed gas outlet hole (14) is D2, the diameter of the small end of the contraction channel (5) is D3, and the diameter of the large end is D4, wherein,
the diameter range of the mixed gas outlet hole (14) is as follows: 1.5D1 is more than or equal to D2 is more than or equal to 1.2D 1;
the diameter of the large end of the contraction channel (5) has the value range: d4 is more than or equal to 4D 1;
the diameter of the small end of the contraction channel (5) has the following value range: 0.6D4 is more than or equal to D3 is more than or equal to 0.3D 4.
4. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 2, wherein: the particle generating device further comprises a mesh partition plate (6) fixedly installed between the contraction channel (5) and the dry ice bin (7), and an openable and closable feeding cover (8) is installed at the top of the dry ice bin (7).
5. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 4, wherein: the net-shaped partition board (6) is made of any one of stainless steel, asbestos, mica, marble and glass, a plurality of meshes are uniformly distributed on the net-shaped partition board (6), and the diameter of each mesh is smaller than or equal to 2 mm.
6. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 4, wherein: the feeding cover (8) is in threaded sealing connection or in buckle sealing connection with the dry ice bin (7).
7. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 1, wherein: setting the height of the contraction channel (5) to be H4, and setting the height difference between the lower edge of the mixed gas outlet hole (14) and the lower edge of the dry ice bin (7) to be H3; wherein the content of the first and second substances,
the height of the contraction channel (5) is in the range: 1.5D4 is more than or equal to H4 is more than or equal to 0.8D 4;
the height difference value range of the lower edge of the mixed gas outlet hole (14) and the lower edge of the dry ice bin (7) is as follows: 4D3 is more than or equal to H3 is more than or equal to 2D 3.
8. The novel particle generation device for nanoparticle plane laser scattering experiments according to any one of claims 1 to 7, wherein: the vapor liquid (2) is any one of water, a blended liquid of acetone and water, and a blended liquid of iodine and water, and the vapor liquid (2) is arranged above the heater (1).
9. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 2, wherein: the lower partition plate (9) shields 60-80% of the area right above the heater (1).
10. The novel particle generation device for nanoparticle plane laser scattering experiments according to claim 9, wherein: the heating power of the heater (1) is adjustable, and the rated power is not less than 500W.
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