CN106179139B - A kind of aerosol generator based on venturi principle - Google Patents
A kind of aerosol generator based on venturi principle Download PDFInfo
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- 238000011049 filling Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 20
- 238000005259 measurement Methods 0.000 description 18
- 238000000917 particle-image velocimetry Methods 0.000 description 17
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- OLSPXHPLUCWYOG-UHFFFAOYSA-N 2,3-diethyl-2-hexyldecanedioic acid Chemical compound CCCCCCC(CC)(C(O)=O)C(CC)CCCCCCC(O)=O OLSPXHPLUCWYOG-UHFFFAOYSA-N 0.000 description 2
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- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0095—Preparation of aerosols
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Abstract
Description
技术领域technical field
本发明涉及发生器，尤其涉及一种基于文丘里原理的气溶胶发生器。The invention relates to a generator, in particular to an aerosol generator based on the Venturi principle.
背景技术Background technique
有效的通风和合理的气流组织对于改善室内空气品质，控制室内污染物浓度，保证实现健康、舒适的人居环境有着重要的意义。通常，研究室内气流组织有实验测量和数值模拟两种途径。其中，实验测量可以获得更真实的流场信息，并且高质量的实验数据还能用于数值模拟的验证。很多研究采用了超声波风速仪、热球或热线风速仪等单点测速技术来进行流场的测量；但是由于室内空气流场具有复杂的非定常性，其瞬时流动特征随着时间呈现出不规则的变化，单点测速技术难以获得准确的流场全场信息和动态流场信息。为克服传统单点测速方法的不足，以粒子图像测速技术(Particle Image Velocimetry,PIV)为代表的全场测速技术，开始逐步应用到室内流场的测量中。PIV是一种基于示踪粒子的光学测速技术，它相对于单点测速技术的最大优势在于能获得瞬时的全场流动信息，同时对流动不产生影响。因此，PIV逐渐成为室内空气流动测量的有力工具。Effective ventilation and reasonable airflow organization are of great significance for improving indoor air quality, controlling the concentration of indoor pollutants, and ensuring a healthy and comfortable living environment. Usually, there are two ways to study indoor air distribution: experimental measurement and numerical simulation. Among them, experimental measurement can obtain more realistic flow field information, and high-quality experimental data can also be used for the verification of numerical simulation. Many studies have used single-point velocity measurement technologies such as ultrasonic anemometers, thermal bulbs, or hot-wire anemometers to measure the flow field; however, due to the complex unsteadiness of the indoor air flow field, its instantaneous flow characteristics appear irregular over time. The single-point velocity measurement technology is difficult to obtain accurate flow field information and dynamic flow field information. In order to overcome the shortcomings of the traditional single-point velocity measurement method, the full-field velocity measurement technology represented by Particle Image Velocimetry (PIV) has gradually been applied to the measurement of indoor flow field. PIV is an optical velocity measurement technology based on tracer particles. Compared with single-point velocity measurement technology, its biggest advantage is that it can obtain instantaneous full-field flow information without affecting the flow. Therefore, PIV has gradually become a powerful tool for indoor air flow measurement.
PIV测速方法有多种分类，无论何种形式的PIV，其速度测量都依赖于散布在流场中的示踪粒子，PIV法测速都是通过测量示踪粒子在已知很短时间间隔内的位移来间接地测量流场的瞬态速度分布。若示踪粒子有足够高的流动跟随性，示踪粒子的运动就能够真实地反映流场的运动状态。因此示踪粒子在PIV测速法中非常重要。在PIV测速技术中，高质量的示踪粒子要求为：(1)比重要尽可能与实验流体相一致；(2)足够小的尺度；(3)形状要尽可能圆且大小分布尽可能均匀；(4)有足够高的光散射效率。此外，在室内环境中进行PIV测量，还要求示踪粒子是无毒无害的。因此，油滴或者癸二酸二异辛酯(Di-Ethyl-Hexyl-Sebacat,DEHS)液滴、舞台烟雾和氦气泡是室内流动PIV测量中最常用的粒子(Cao X,LiuJ,Jiang N,et al.Particle image velocimetry measurement of indoor airflowfield:A review of the technologies and applications[J].Energy&Buildings,2014,69(3):367–380.)。其中，DEHS滴的粒径一般为几微米，具有非常好的湍流跟随性，且DEHS物理性能稳定，不易挥发且在同样尺寸下有着较高的光散射效率，视为空气中进行PIV测量较为理想的示踪粒子。There are many classifications of PIV speed measurement methods. No matter what kind of PIV, its speed measurement depends on the tracer particles scattered in the flow field. The displacement is used to indirectly measure the transient velocity distribution of the flow field. If the tracer particles have a high enough flow followability, the motion of the tracer particles can truly reflect the motion state of the flow field. Therefore, tracer particles are very important in PIV velocimetry. In PIV velocimetry, the requirements for high-quality tracer particles are: (1) the specific gravity should be as consistent as possible with the experimental fluid; (2) the scale should be small enough; (3) the shape should be as round as possible and the size distribution should be as uniform as possible ; (4) have sufficiently high light scattering efficiency. In addition, for PIV measurement in an indoor environment, the tracer particles are also required to be non-toxic and harmless. Therefore, oil droplets or di-ethyl-hexyl-sebacat (Di-Ethyl-Hexyl-Sebacat, DEHS) droplets, stage smoke and helium bubbles are the most commonly used particles in indoor flow PIV measurements (Cao X, LiuJ, Jiang N, et al.Particle image velocimetry measurement of indoor airflowfield: A review of the technologies and applications[J].Energy&Buildings,2014,69(3):367–380.). Among them, the particle size of DEHS droplets is generally a few microns, which has very good turbulence followability, and DEHS has stable physical properties, is not volatile, and has high light scattering efficiency at the same size, which is considered ideal for PIV measurement in air. tracer particles.
目前用于空气中PIV测量的粒子发生装置按照发生原理可以分为热凝结发生和雾化发生两种(Melling A.Tracer particles and seeding for particle imagevelocimetry[J].Measurement Science&Technology,1997,8(12):1406-1416.)。热凝结气溶胶发生装置，如，CN 201578709U和CN 204314024U，只适用于发生舞台烟油等物理稳定性较差的气溶胶作为示踪粒子，虽然发生量较大但无法满足连续长时间采样的PIV测量需求；雾化原理发生装置中以基于Laskin原理的气溶胶发生装置最具有代表性，如CN102072861A、CN 102069047A和CN 203155194U，虽然其可以发生DEHS液滴等较为理想的示踪粒子，但其发生量十分有限，仅仅适用于较小尺寸的PIV拍摄，如，人体上呼吸道模型(CN102564728B)和缩尺模型(CN 100458372C)，并不能为大视场或者大流量提供充足的示踪粒子。综上，目前并没有一款可以制备高浓度的DEHS液滴气溶胶的装置，因此，为了获得高质量大尺寸流场的PIV测量数据，亟需进行相关气溶胶发生装置的研发工作。At present, the particle generators used for PIV measurement in air can be divided into thermal condensation and atomization according to the principle of generation (Melling A. Tracer particles and seeding for particle imagevelocimetry [J]. Measurement Science & Technology, 1997, 8 (12) :1406-1416.). Thermally condensed aerosol generators, such as CN 201578709U and CN 204314024U, are only suitable for generating aerosols with poor physical stability such as stage smoke oil as tracer particles. Although the amount of generation is large, it cannot meet the PIV of continuous long-term sampling. Measurement requirements; among the generation devices based on the Laskin principle, the aerosol generation devices based on the Laskin principle are the most representative, such as CN102072861A, CN 102069047A and CN 203155194U. Although they can generate DEHS droplets and other ideal tracer particles, their generation Quantity is very limited, only applicable to the PIV shooting of smaller size, such as, human upper airway model (CN102564728B) and scale model (CN 100458372C), can not provide sufficient tracer particles for large field of view or large flow. In summary, there is currently no device that can produce high-concentration DEHS droplet aerosols. Therefore, in order to obtain high-quality PIV measurement data of large-scale flow fields, it is urgent to carry out research and development of related aerosol generating devices.
此外，在高大洁净厂房的洁净度测试，以及大型高效过滤系能的性能测试等实验研究中，高浓度气溶胶发生装置也是其实验开展的基础。目前尚未有有效的气溶胶发生器用于上述实验研究中。In addition, in the cleanliness test of tall clean workshops and the performance test of large-scale high-efficiency filtration systems, the high-concentration aerosol generator is also the basis for the experiment. At present, no effective aerosol generator has been used in the above experimental research.
发明内容Contents of the invention
本发明的目的在于克服已有技术的缺点，提供一种发生稳定并且粒径分布集中的基于文丘里原理的气溶胶发生器。The purpose of the present invention is to overcome the shortcomings of the prior art, and provide an aerosol generator based on the Venturi principle with stable generation and concentrated particle size distribution.
本发明的一种基于文丘里原理的气溶胶发生器，它包括箱体，在所述的箱体内沿水平方向设置有油箱顶板，所述的油箱顶板将箱体内分隔为上部的控制箱和下部的油箱，在所述的控制箱的两侧面板上各设置有一个控压组件和多个控制箱进气接头，在所述控制箱的顶部设有两个压力表，每一个所述的控压组件的出气口分别通过穿过控制箱设置的一路管线与一个压力表相连，在所述的油箱的油箱底板上沿竖直方向固定有一个分离隔板，位于所述的分离隔板右侧的部分为发生室，位于所述的分离隔板左侧的部分为分离室，所述分离隔板与油箱顶板间隔设置，在位于发生室侧的所述的油箱顶板上开有多个油箱进气口和一个注油口，每一个所述的控压组件的出气口通过多路管道分别依次连接球阀以及进气接头后进入控制箱内，进入控制箱内的两侧多路管道分别与位于油箱顶板的油箱进气口相连，在所述的发生室内的油箱底板上开有多个螺口，在所述发生室处的油箱的侧壁中部、侧壁底部分别设有发生室液位显示仪、发生室卸油口，在所述分离室处的油箱的侧壁中部、侧壁底部分别设有分离室液位显示仪、分离室卸油口，在所述分离室处的油箱的侧壁上部设有气溶胶出口以及安全阀，在发生室内的所述的油箱底板上固定有多个喷嘴，每一个所述喷嘴包括上下相对间隔设置且共同螺纹连接在竖直设置的中部螺纹杆上的喷嘴上部分和喷嘴下部分，在所述的喷嘴上部分和喷嘴下部分的圆周方向上通过等间隔设置的三根螺纹杆与对应设置的螺口固定相连，所述喷嘴上部分和喷嘴下部分分别包括基体以及设置在基体上的中空凸台，所述的喷嘴上部分和喷嘴下部分的中空凸台相对间隔设置，所述的喷嘴上部分和喷嘴下部分的中空凸台之间形成缝隙作为压缩空气的出口，所述的缝隙的高度为0.1～0.3mm，在所述喷嘴上部分的基体上开有进气口通道，所述进气口通道与喷嘴上部分的中空凸台的空腔以及喷嘴下部分的中空凸台的空腔相互连通构成进气通道，每一个喷嘴的进气口通道分别通过耐油耐压软管与油箱进气口相连通，所述的喷嘴上部分的中空凸台的底部外壁和喷嘴下部分的中空凸台顶部外壁关于缝隙的中心线对称并且均为弧形导流结构。A kind of aerosol generator based on Venturi principle of the present invention, it comprises box body, is provided with oil tank top plate along horizontal direction in described box body, and described oil tank top plate divides box body into upper control box and lower part The oil tank of the control box is provided with a pressure control assembly and a plurality of control box air inlet joints on the two side panels of the control box, and two pressure gauges are arranged on the top of the control box, each of the control boxes The air outlets of the pressure components are respectively connected to a pressure gauge through a pipeline set through the control box, and a separation partition is fixed vertically on the bottom plate of the fuel tank, located on the right side of the separation partition The part on the left side of the separation partition is the generation chamber, and the part on the left side of the separation partition is the separation chamber. The separation partition is spaced apart from the top plate of the fuel tank, and a plurality of fuel tanks are opened on the top plate of the fuel tank on the side of the generation chamber. An air port and an oil injection port. The air outlet of each of the pressure control components is respectively connected to the ball valve and the air inlet joint through multi-channel pipes and then enters the control box. The multi-channel pipes on both sides of the control box are respectively connected to the The air inlet of the fuel tank on the top plate is connected, and there are a plurality of screw ports on the bottom plate of the fuel tank in the generating chamber, and the middle part of the side wall and the bottom of the side wall of the fuel tank at the generating chamber are respectively equipped with a liquid level indicator in the generating chamber 1. The oil discharge port of the occurrence chamber. The middle part of the side wall and the bottom of the side wall of the oil tank at the separation chamber are respectively provided with a liquid level indicator of the separation chamber and an oil discharge port of the separation chamber. The side wall of the fuel tank at the separation chamber is The upper part is provided with an aerosol outlet and a safety valve, and a plurality of nozzles are fixed on the bottom plate of the fuel tank in the generating room, and each of the nozzles includes a nozzle that is arranged at intervals up and down and is jointly threaded on the vertically arranged middle threaded rod. The upper part of the nozzle and the lower part of the nozzle are fixedly connected to the corresponding screw ports through three threaded rods arranged at equal intervals in the circumferential direction of the upper part of the nozzle and the lower part of the nozzle. The upper part of the nozzle and the lower part of the nozzle are respectively It includes a base body and a hollow boss arranged on the base body, the hollow bosses of the upper part of the nozzle and the lower part of the nozzle are relatively spaced apart, and a gap is formed between the hollow bosses of the upper part of the nozzle and the lower part of the nozzle as a compression The outlet of the air, the height of the gap is 0.1 ~ 0.3mm, an air inlet passage is opened on the base of the upper part of the nozzle, the air inlet passage is connected with the cavity of the hollow boss on the upper part of the nozzle and The cavities of the hollow bosses in the lower part of the nozzles communicate with each other to form air intake passages, and the air inlet passages of each nozzle are respectively connected to the air inlet of the fuel tank through oil-resistant and pressure-resistant hoses, and the hollow bosses in the upper part of the nozzles described above The bottom outer wall of the nozzle and the top outer wall of the hollow boss in the lower part of the nozzle are symmetrical about the center line of the gap and are both arc-shaped flow guide structures.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
(1)本发明的基于文丘里原理的喷嘴，从缝隙喷出的压缩空气与由于文丘里效应流来的液体发生碰撞，产生的气泡量远多于传统基于Laskin喷嘴的单个点鼓泡的方法，从而将气溶胶的产生量大大提高。(1) In the nozzle based on the Venturi principle of the present invention, the compressed air ejected from the gap collides with the liquid flowing due to the Venturi effect, and the amount of bubbles produced is far more than the traditional single-point bubbling method based on the Laskin nozzle , thereby greatly increasing the amount of aerosol produced.
(2)四根带有螺纹的连接杆件设置，不仅保证了喷嘴结构的稳定性，而且可以让喷嘴上部与喷嘴下部的缝隙可以进行精细调节，可调的缝隙改变了其鼓泡的大小，进而使得生成气溶胶的粒径分布可以调节。(2) The setting of four connecting rods with threads not only ensures the stability of the nozzle structure, but also allows the gap between the upper part of the nozzle and the lower part of the nozzle to be finely adjusted, and the adjustable gap changes the size of its bubbles. In turn, the particle size distribution of the generated aerosol can be adjusted.
(3)控制箱和油箱分开设置，使得用以控制进气的阀门、仪表和管件避免浸泡在油中，进而有益于该装置使用的耐久性。(3) The control box and the oil tank are arranged separately, so that the valves, instruments and pipe fittings used to control the intake air are prevented from being soaked in oil, which is beneficial to the durability of the device.
(4)每一个喷嘴具有独立的球阀和空压组件，可以通过增减开启的喷嘴数以及进气压力来调节气溶胶的发生量。(4) Each nozzle has an independent ball valve and air pressure component, and the amount of aerosol generation can be adjusted by increasing or decreasing the number of opened nozzles and the intake pressure.
(5)油箱中的发生室和分离室的结构设置，可以捕获收集鼓泡时溅出的少量油滴与较大颗粒，控制粒径保持在一个较小的范围的同时还可以将多余的油回收利用。(5) The structural setting of the generation chamber and the separation chamber in the oil tank can capture and collect a small amount of oil droplets and larger particles splashed during bubbling, and control the particle size in a small range, while also allowing excess oil recycle and re-use.
附图说明Description of drawings
图1为一种基于文丘里原理的气溶胶发生器的喷嘴正视图；Fig. 1 is a kind of front view of the nozzle of the aerosol generator based on Venturi principle;
图2为图1所示的喷嘴的俯视图；Figure 2 is a top view of the nozzle shown in Figure 1;
图3为图1所示的喷嘴的原理图；Fig. 3 is a schematic diagram of the nozzle shown in Fig. 1;
图4为一种基于文丘里原理的气溶胶发生器的箱体立体图；Fig. 4 is a box perspective view of an aerosol generator based on the Venturi principle;
图5一种基于文丘里原理的气溶胶发生器的油箱内部立体图；Figure 5 is a three-dimensional view inside the fuel tank of an aerosol generator based on the Venturi principle;
图6为图4所示的气溶胶发生器的油箱顶板的结构示意图；Fig. 6 is a schematic structural view of the fuel tank roof of the aerosol generator shown in Fig. 4;
图7为图4所示的气溶胶发生器的油箱底板的结构示意图。Fig. 7 is a schematic structural view of the bottom plate of the fuel tank of the aerosol generator shown in Fig. 4 .
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明技术方案作进一步详细描述，所描述的具体实施例仅对本发明进行解释说明，并不用以限制本发明。The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the described specific embodiments are only for explaining the present invention, and are not intended to limit the present invention.
本发明的一种基于文丘里原理的气溶胶发生器，它包括箱体，在所述的箱体内沿水平方向设置有油箱顶板7，所述的油箱顶板7将箱体内分隔为上部的控制箱5和下部的油箱9，在所述的控制箱5的两侧面板上各设置有一个控压组件2和多个控制箱进气接头6，在所述控制箱5的顶部设有两个压力表3；控压组件2起到稳压以及压力控制的作用，每一个所述的控压组件2的出气口分别通过穿过控制箱设置的一路管线与一个压力表3相连。A kind of aerosol generator based on Venturi principle of the present invention, it comprises box body, is provided with oil tank top plate 7 along horizontal direction in described box body, and described oil tank top plate 7 divides the box body into upper control box 5 and the lower oil tank 9, a pressure control assembly 2 and a plurality of control box air inlet joints 6 are respectively arranged on the two side panels of the control box 5, and two pressure Table 3: The pressure control component 2 plays the role of pressure stabilization and pressure control, and the gas outlet of each of the pressure control components 2 is respectively connected to a pressure gauge 3 through a pipeline provided through the control box.
在所述的油箱9的油箱底板上沿竖直方向固定有一个分离隔板16，位于所述的分离隔板16右侧的部分为发生室10，位于所述的分离隔板16左侧的部分为分离室17，所述分离隔板16与油箱顶板7间隔设置。在位于发生室10侧的所述的油箱顶板7上开有多个(如图可以为六个)油箱进气口8和一个注油口19，每一个所述的控压组件2的出气口通过多路管道分别依次连接球阀4以及进气接头6后进入控制箱5内，进入控制箱5内的两侧多路管道分别与位于油箱顶板7的油箱进气口8相连。On the oil tank bottom plate of the described oil tank 9, a separation baffle 16 is vertically fixed, the part on the right side of the separation baffle 16 is the generation chamber 10, and the part on the left side of the separation baffle 16 Part of it is a separation chamber 17, and the separation partition 16 is spaced apart from the top plate 7 of the oil tank. There are a plurality of (six as shown in the figure) oil tank air inlets 8 and an oil filling port 19 on the said oil tank top plate 7 located at the side of the generating chamber 10, and the air outlet of each said pressure control assembly 2 passes through The multi-channel pipes are respectively connected to the ball valve 4 and the air inlet joint 6 in turn and enter the control box 5, and the multi-channel pipes on both sides of the control box 5 are respectively connected to the fuel tank air inlet 8 located on the fuel tank top plate 7.
在所述的发生室内的油箱底板27上开有多个(可以为十八个)螺口28用于将多个(可以为六个)喷嘴29固定在发生室10底部，在所述发生室10处的油箱9的侧壁中部、侧壁底部分别设有发生室液位显示仪20、发生室卸油口21；在所述分离室处的油箱9的侧壁中部、侧壁底部分别设有分离室液位显示仪22、分离室卸油口23，在所述分离室处的油箱9的侧壁上部设有气溶胶出口18以及安全阀24。A plurality of (can be eighteen) screw ports 28 are provided on the oil tank bottom plate 27 in the described generation chamber to fix a plurality of (can be six) nozzles 29 on the bottom of the generation chamber 10, in the generation chamber The middle part of the side wall and the bottom of the side wall of the oil tank 9 at 10 places are respectively provided with a liquid level indicator 20 in the generating room and an oil discharge port 21 in the generating room; There is a liquid level indicator 22 in the separation chamber and an oil discharge port 23 in the separation chamber. An aerosol outlet 18 and a safety valve 24 are provided on the upper side wall of the oil tank 9 at the separation chamber.
在发生室10内的所述的油箱底板27上固定有多个(六个)喷嘴29，每一个所述喷嘴29包括上下相对间隔设置且共同螺纹连接在竖直设置的中部螺纹杆25上的喷嘴上部分12和喷嘴下部分13，中部螺纹杆25用于精细调节缝隙14的高度(喷嘴上部分12和喷嘴下部分13之间的距离)为0.1～0.3mm，在所述的喷嘴上部分12和喷嘴下部分13的圆周方向上通过等间隔设置的三根螺纹杆26与对应设置的螺口28固定相连。A plurality of (six) nozzles 29 are fixed on the bottom plate 27 of the oil tank in the generation chamber 10, and each of the nozzles 29 includes a nozzle that is arranged at intervals up and down and is screwed together on the vertically arranged middle threaded rod 25. The upper part 12 of the nozzle and the lower part 13 of the nozzle, and the threaded rod 25 in the middle are used to finely adjust the height of the gap 14 (the distance between the upper part 12 of the nozzle and the lower part 13 of the nozzle) to be 0.1-0.3mm. 12 and the nozzle lower part 13 are fixedly connected to the corresponding screw ports 28 through three threaded rods 26 arranged at equal intervals in the circumferential direction.
所述喷嘴上部分12和喷嘴下部分13分别包括基体以及设置在基体上的中空凸台，所述的喷嘴上部分12和喷嘴下部分13的中空凸台相对间隔设置，所述的喷嘴上部分12和喷嘴下部分13的中空凸台之间形成缝隙14作为压缩空气的出口，缝隙14的高度为0.1～0.3mm，在所述喷嘴上部分的基体上开有进气口通道11，所述进气口通道11与喷嘴上部分12的中空凸台的空腔以及喷嘴下部分13的中空凸台的空腔相互连通构成进气通道。每一个喷嘴29的进气口通道11分别通过耐油耐压软管与油箱进气口8相连通。The nozzle upper part 12 and the nozzle lower part 13 respectively include a base body and a hollow boss arranged on the base body, the hollow bosses of the nozzle upper part 12 and the nozzle lower part 13 are relatively spaced apart, and the nozzle upper part 12 and the hollow boss of the lower part of the nozzle 13 form a gap 14 as the outlet of the compressed air, the height of the gap 14 is 0.1-0.3 mm, and an air inlet channel 11 is opened on the base of the upper part of the nozzle. The air inlet passage 11 communicates with the cavity of the hollow boss of the nozzle upper part 12 and the cavity of the hollow boss of the nozzle lower part 13 to form an air inlet passage. The air inlet channel 11 of each nozzle 29 communicates with the fuel tank air inlet 8 through an oil-resistant and pressure-resistant hose respectively.
所述的喷嘴上部分12的中空凸台的底部外壁和喷嘴下部分13的中空凸台顶部外壁关于缝隙14的中心线对称并且均为弧形导流结构。所述弧形导流结构，使从缝隙14喷出的压缩空气产生了文丘里效应，从而使得气溶胶的产生量大大增加。The bottom outer wall of the hollow boss of the nozzle upper part 12 and the top outer wall of the hollow boss of the nozzle lower part 13 are symmetrical with respect to the center line of the gap 14 and are arc-shaped guide structures. The arc-shaped air guide structure makes the compressed air ejected from the slit 14 produce a Venturi effect, thereby greatly increasing the amount of aerosol produced.
为了保证本发明装置性能的稳定，本发明装置设有两套独立的进气系统，每套进气系统包括进气口1、控压组件2、压力表3、多个球阀4、多个油箱进气口8等组成，所述每套进气系统可以控制三个喷嘴29进行工作，下面以其中一套为例结合附图进行说明：In order to ensure the stability of the performance of the device of the present invention, the device of the present invention is provided with two independent air intake systems, each air intake system includes an air inlet 1, a pressure control assembly 2, a pressure gauge 3, a plurality of ball valves 4, and a plurality of fuel tanks Air inlet 8 etc., described each set of air intake system can control three nozzles 29 to work, below take one of them as an example in conjunction with accompanying drawing to illustrate:
压缩空气从进气口1引入，经过控压组件2起到稳压以及压力控制的作用，后分成四路，一路与压力表3相连以监控进气压力，其余三路分别接球阀4后进入控制箱5至控制箱进气接头6后进入控制箱5内，进入控制箱5内的两侧多路管道分别与位于油箱顶板7的油箱进气口8相连。在油箱9的发生室10中，压缩空气从油箱进气口接头8通过耐油耐压软管引入喷嘴29(喷嘴29浸没于油箱9的油液里)的进气口通道11，进入喷嘴上部分12和喷嘴下部分13构成的缝隙14高速射出，在缝隙14周围形成大量夹带着微小液滴的气溶胶气泡15，气泡15上升至液面破裂形成气溶胶后随着气流经过分离隔板16，使得大的颗粒与油滴沉降在分离室17中，小粒径油滴继续跟随气流从气溶胶出口18排出。Compressed air is introduced from the air inlet 1, through the pressure control component 2 to stabilize the pressure and control the pressure, and then divided into four routes, one route is connected with the pressure gauge 3 to monitor the intake pressure, and the remaining three routes are respectively connected to the ball valve 4 and enter The control box 5 enters the control box 5 after entering the control box air inlet joint 6, and the two sides multi-channel pipelines entering the control box 5 are respectively connected with the fuel tank air inlet 8 located at the fuel tank top plate 7. In the generating chamber 10 of the fuel tank 9, the compressed air is introduced from the fuel tank air inlet joint 8 through the oil-resistant and pressure-resistant hose into the air inlet channel 11 of the nozzle 29 (the nozzle 29 is immersed in the oil of the fuel tank 9), and enters the upper part of the nozzle The gap 14 formed by 12 and the lower part of the nozzle 13 shoots out at a high speed, forming a large number of aerosol bubbles 15 entraining tiny liquid droplets around the gap 14, and the bubbles 15 rise to the liquid surface and burst to form an aerosol, and then pass through the separation partition 16 with the airflow, The large particles and oil droplets settle in the separation chamber 17 , and the small-diameter oil droplets continue to follow the airflow to be discharged from the aerosol outlet 18 .
用于产生气溶胶的物质可以为DEHS、DOP和NaCL等液体，为了描述方便统称为“液体”，液体从位于油箱顶板7的进油口19直接加入油箱9的发生室10中，液体填充完毕后使用旋塞将进油口19锁死密封，通过发生室液位显示仪20观察液位至少需要浸没缝隙14的高度方可正常工作，发生室10底部的发生室卸油口21用来清洗发生室以及更换用于产生气溶胶的液体。在分离室17侧安装的分离室液位显示仪22可以观察液位收集情况，并且设有分离室卸油口23，用以回收液体以及清理分离室17。The substances used to generate aerosols can be liquids such as DEHS, DOP, and NaCl. For the convenience of description, they are collectively referred to as "liquid". The liquid is directly added to the generating chamber 10 of the fuel tank 9 from the oil inlet 19 on the top plate of the fuel tank 7, and the liquid is filled. Finally, use the cock to lock and seal the oil inlet 19, and observe the liquid level through the generator chamber liquid level indicator 20 to at least submerge the height of the gap 14 before it can work normally. chamber and changing the liquid used to generate the aerosol. The separation chamber liquid level indicator 22 installed on the side of the separation chamber 17 can observe the liquid level collection situation, and is provided with a separation chamber oil discharge port 23 for recovering liquid and cleaning the separation chamber 17.
安全阀门24设置在分离室17外侧，用以控制装置内部压力不超过安全范围。The safety valve 24 is arranged outside the separation chamber 17 to control the internal pressure of the device not to exceed the safe range.
以上对本发明做了示例性的描述，应该说明的是，在不脱离本发明的核心的情况下，任何简单的变形、修改或者其他本领域技术人员能够不花费创造性劳动的等同替换均落入本发明的保护范围。The present invention has been described as an example above, and it should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without creative labor all fall within the scope of this invention. protection scope of the invention.
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| GB1325711A (en) * | 1970-06-19 | 1973-08-08 | Ciba Geigy Ag | Aerosol dispensers |
| FR2604093B1 (en) * | 1986-09-19 | 1996-10-25 | Massart Herve | AEROSOL GENERATING DEVICE FOR MEDICAL USE |
| CN202860509U (en) * | 2012-09-28 | 2013-04-10 | 青岛众瑞智能仪器有限公司 | DOP (Dioctyl-Phthalate) aerosol generator |
| CN105675317A (en) * | 2014-11-19 | 2016-06-15 | 中国辐射防护研究院 | Aerosol cold generator |
| CN206045990U (en) * | 2016-09-16 | 2017-03-29 | 天津大学 | A kind of aerosol generator based on venturi principle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1325711A (en) * | 1970-06-19 | 1973-08-08 | Ciba Geigy Ag | Aerosol dispensers |
| FR2604093B1 (en) * | 1986-09-19 | 1996-10-25 | Massart Herve | AEROSOL GENERATING DEVICE FOR MEDICAL USE |
| CN202860509U (en) * | 2012-09-28 | 2013-04-10 | 青岛众瑞智能仪器有限公司 | DOP (Dioctyl-Phthalate) aerosol generator |
| CN105675317A (en) * | 2014-11-19 | 2016-06-15 | 中国辐射防护研究院 | Aerosol cold generator |
| CN206045990U (en) * | 2016-09-16 | 2017-03-29 | 天津大学 | A kind of aerosol generator based on venturi principle |
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Effective date of registration: 20210122 Address after: 517, 518, 519, block a, 6 Haitai development road, Huayuan Industrial Zone, Binhai New Area, Tianjin Patentee after: Tianjin Zhongtian Environmental Technology Co., Ltd Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |