Method for testing particle size of water mist droplets
Through the diversion diffusion device composed of the diversion plate and the diffusion box, the ultra-fine water mist mist mass is isolated and diluted, and the light curtain effect caused by excessive concentration of the ultra-fine water mist is solved, and the accurate detection of the ultra-fine water mist particle size is achieved.
Patent Information
- Application Number
- CN202510483782.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2025-08-01
AI Technical Summary
In the prior art, the ultra-fine water mist particle size is small, and the concentration is too large under the same input flow rate, forming a light curtain effect, blocking light propagation, resulting in the inability to detect the particle size of the fog droplet.
The ultra-fine water mist mist is isolated and diverted by a splitter plate. Some of the mists are diluted into the diffusion box, and the diluted mist particle size is detected by a particle size analyzer.
Effectively reduce the concentration of fog, ensure laser penetration, and achieve accurate detection of ultra-fine water mist particle size.
Smart Images
Figure CN120404505A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of droplet size measurement, and in particular, to a method for measuring the droplet size of fine water mist. Background Art
[0002] Currently, ultrafine water mist refers to fine water mist with a water droplet size D V0.9 <10 μm, which is a brand-new technology rather than a product iteration based on high-pressure fine water mist. Due to its smaller particle size, it exhibits different characteristics. It has the cooling effect of water mist and the properties similar to gas, with strong permeability, long suspension time. And because of the smaller particle size and larger surface area, it also has a stronger ability to adsorb particles. It can fill the entire enclosed space in a very short time, achieving three-dimensional dust collection and explosion-proof fire extinguishing effects.
[0003] In the prior art, when studying ultrafine water mist, a laser particle size analyzer is needed to analyze the water droplet size. The principle of the particle size analyzer is to penetrate the water mist with laser, emit at one end and receive at the other end, and use the diffraction and scattering of light to measure the water droplet size between the emission and reception ends, as Figure 7 shown.
[0004] However, the particle size of ultrafine water mist is very small. Under the same input flow rate, the concentration of ultrafine water mist generated is much greater than that of fine water mist. Excessive concentration will form a light curtain effect similar to that, completely blocking the propagation of light, and thus the water droplet size cannot be detected.
[0005] In summary, there are at least one of the following technical problems:
[0006] The particle size of ultrafine water mist is very small. Under the same input flow rate, the concentration of ultrafine water mist generated is much greater than that of fine water mist. Excessive concentration will form a light curtain effect similar to that, completely blocking the propagation of light, and the water droplet size cannot be detected. Summary of the Invention
[0007] The main object of the present invention is to provide a method for measuring the droplet size of fine water mist, so as to solve the technical problem in the prior art that the particle size of ultrafine water mist is very small, under the same input flow rate, the concentration of ultrafine water mist generated is much greater than that of fine water mist, excessive concentration will form a light curtain effect similar to that, completely blocking the propagation of light, and the water droplet size cannot be detected.
[0008] To achieve the above object, according to one aspect of the present invention, a method for measuring the droplet size of fine water mist is provided, including:
[0009] Step 1: Partition and divert the high-concentration ultrafine water mist cloud ejected from the nozzle;
[0010] Step 2: Extract a part of the water mist cloud and introduce it into the diffusion box for diffusion;
[0011] Step 3: Use a particle size analyzer to detect the particle size of the ultrafine water mist in the diffusion box through the observation hole.
[0012] Preferably, in step 1, the fog mass is isolated and split by a diverter plate with a slope.
[0013] Preferably, in step 2, after the fog mass is ejected, it diffuses in a flared shape. After the fog mass hits the slope of the diverter plate, part of the fog mass enters the diffusion box through the diversion channel on the slope.
[0014] Preferably, in step 2, the diffusion box is used to dilute the concentration of the fog mass.
[0015] Preferably, in step 3, the particle size analyzer emits a laser from the laser emission end, then the laser passes through the diffusion box and is received by the laser receiving end of the particle size analyzer.
[0016] Preferably, the diverter plate isolates most of the fog mass above the diverter plate.
[0017] Preferably, the diverter plate covers the entire particle size analyzer under its wing surface.
[0018] Preferably, after entering the diffusion box, it diffuses into a relatively thin fog mass, reducing to a concentration that meets the requirements for laser detection. Through the observation hole, the particle size analyzer is used to detect the particle size of the ultrafine water mist.
[0019] Preferably, the laser emission end of the particle size analyzer, the observation hole, and the receiving end of the particle size analyzer are located on the same axis.
[0020] Preferably, the fog mass in the diffusion box overflows through the openings on both sides.
[0021] Applying the technical solution of the present invention has the following technical effects:
[0022] By setting the diverter plate, it plays a role in isolating and splitting the fog mass. The area below the diverter plate is the detection area. Through the baffle of the diverter plate, most of the fog mass can be blocked from entering. There is a diversion channel connecting the slope of the diverter plate and the diffusion box, which can introduce a small beam of the fog mass in front of the diverter plate into the diffusion box. After being diffused and diluted in the diffusion box, circular holes are opened on both sides of the diffusion box as observation holes, and the particle size analyzer is aligned with the observation holes to detect the particle size of the fog droplets with diluted concentration in the diffusion box, ultimately achieving the function of detecting the particle size of the fog droplets.
[0023] Introduce a small part of the fog mass to diffuse into the diffusion box, allowing it to diffuse in the diffusion box to reduce the fog mass concentration, facilitating laser penetration detection by the particle size analyzer; the shunt plate covers the entire particle size analyzer under its wing surface, ensuring the space between the receiving end and the emitting end of the particle size analyzer. Except for the fog droplets in the diffusion box to be detected, other positions are relatively clean, avoiding the influence of thick fog masses. The concentration of the ultra-fine water mist fog mass ejected by the nozzle is very high, and the laser cannot penetrate it, so the particle size analyzer cannot directly analyze it. After the fog mass is ejected, it diffuses in a trumpet shape. After hitting the ramp plate at the front end of the shunt plate, most of the fog mass goes upward and is diverted above the shunt plate. At the same time, a small part of the fog mass will diffuse into the diversion channel between the shunt plate and the diffusion box, and finally enter the diffusion box, diffusing into a relatively thin fog mass, reducing to a concentration that meets the laser detection requirements, and then the particle size of the ultra-fine water mist can be detected through the observation hole using the particle size analyzer. Effectively shunt the fog mass to ensure a relatively low fog mass concentration in the dispersion box. The particle size analyzer is placed under the wing surface of the shunt plate, ensuring a relatively clean detection space, ensuring that the laser penetrates the fine water mist, and effectively detecting the particle size of the fog droplets. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0025] Figure 1 shows a schematic flow diagram of a method for testing the particle size of fine water mist droplets according to the present invention;
[0026] Figure 2 shows Figure 1 a view of the particle size analysis box of the method for testing the particle size of fine water mist droplets in
[0027] Figure 3 shows Figure 1 a view of the fog mass flow direction of the method for testing the particle size of fine water mist droplets in
[0028] Figure 4 shows Figure 1 a view of the fog mass shunt diffusion path of the method for testing the particle size of fine water mist droplets in
[0029] Figure 5 shows Figure 1 a three-dimensional view of the relative position of the test equipment of the method for testing the particle size of fine water mist droplets in
[0030] Figure 6 shows Figure 1 a front view of the relative position of the test equipment of the method for testing the particle size of fine water mist droplets in
[0031] Figure 7 shows Figure 1Prior art view of the relative position of the test equipment for the water mist droplet size test method;
[0032] The above drawings include the following reference numerals:
[0033] Diverter plate 1; guide channel 2; observation hole 3; diffusion box 4; nozzle 5; fog group outline 6; fog group 7; particle size analyzer laser receiving end 8; observation hole 9; particle size analyzer laser emitting end 10; diverter and diffuser device 11. DETAILED DESCRIPTION
[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0035] like Figures 1 to 7 As shown, an embodiment of the present invention provides a method for testing the particle size of fine water mist droplets, including: step 1: isolating and diverting the high-concentration ultrafine water mist cluster 7 sprayed from the nozzle 5; step 2: extracting a portion of the mist cluster 7 into the diffusion box 4 for diffusion; step 3: using a particle size analyzer to detect the ultrafine water mist particle size in the diffusion box 4 through the observation hole 3.
[0036] In this embodiment, step 1: isolates and diverts the high-concentration ultrafine water mist cloud 7 sprayed from nozzle 5. In step 1, cloud 7 is isolated and diverted by a sloped diverter plate 1. Diverter plate 1 isolates most of cloud 7 above diverter plate 1, which covers the entire particle size analyzer below its wing surface.
[0037] In this embodiment, step 2: extract a portion of the mist 7 into the diffusion box 4 for diffusion; in step 2, the mist 7 is diffused in a trumpet shape after being sprayed out, and the outline of the mist 6 is as follows: Figure 3 After the mist mass 7 hits the slope of the diverter plate 1, part of the mist mass 7 enters the diffusion box 4 through the guide channel 2 on the slope. In step 2, the mist mass 7 is diluted by the diffusion box 4.
[0038] In this embodiment, step 3: the particle size of the ultrafine water mist in the diffusion box 4 is detected through the observation hole 3 by the particle size analyzer. In step 3, the laser is emitted by the laser emitting end 10 of the particle size analyzer, then passes through the diffusion box 4, and is then received by the laser receiving end 8 of the particle size analyzer. After entering the diffusion box 4, it diffuses into a relatively thin mist 7, which is reduced to a concentration that meets the requirements for laser detection. The particle size of the ultrafine water mist is detected through the observation hole 3 using the particle size analyzer. The laser emitting end 10 of the particle size analyzer, the observation hole 3, and the receiving end of the particle size analyzer are located on the same axis. The mist 7 of the diffusion box 4 overflows through the openings 9 on both sides.
[0039] In this embodiment, the flow splitter 1 is provided to isolate and split the fog mass 7. The area below the flow splitter 1 is the detection area. Through the baffle of the flow splitter 1, most of the fog mass 7 can be blocked from entering. There is a diversion channel 2 connecting the slope of the flow splitter 1 and the diffusion box 4, which can introduce a small beam of the fog mass 7 in front of the flow splitter 1 into the diffusion box 4, and the concentration is diffused and diluted through the diffusion box 4. Round holes are opened on both sides of the diffusion box 4 as observation holes 3. The particle size analyzer is aligned with the observation holes 3 to detect the particle size of the fog droplets after the concentration is diluted in the diffusion box 4, and finally the function of detecting the particle size of the fog droplets is achieved. A small part of the fog mass 7 is introduced and diffused into the diffusion box 4 to diffuse in the diffusion box 4 to reduce the concentration of the fog mass 7, which is convenient for the laser of the particle size analyzer to penetrate and detect; the flow splitter 1 covers the whole set of particle size analyzers under its wing surface to ensure the space between the receiving end and the transmitting end of the particle size analyzer. Except for the fog droplets in the diffusion box 4 to be detected, other positions are relatively clean, avoiding the influence of the thick fog mass 7. The concentration of the ultra-fine water mist fog mass 7 sprayed by the nozzle 5 is very high, and the laser cannot penetrate it, so the particle size analyzer cannot directly analyze it. After the fog mass 7 is sprayed, it diffuses in a trumpet shape. After hitting the slope plate at the front end of the flow splitter 1, most of the fog mass 7 goes upward and is split to the upper part of the flow splitter 1. At the same time, a small part of the fog mass 7 will diffuse into the diversion channel 2 between the flow splitter 1 and the diffusion box 4, and finally enter the diffusion box 4, diffusing into a relatively thin fog mass 7, reducing to a concentration that meets the laser detection, and then the particle size of the ultra-fine water mist can be detected through the observation hole 3 using the particle size analyzer. The fog mass 7 is effectively split to ensure that the concentration of the fog mass 7 in the dispersion box is relatively low. The particle size analyzer is placed under the wing surface of the flow splitter 1 to ensure that the detection space is relatively clean, ensuring that the laser penetrates the fine water mist and effectively detecting the particle size of the fog droplets.
[0040] Specifically, a portion of the water mist is extracted from the high-concentration ultrafine water mist and dispersed into a large-sized space to achieve the purpose of reducing the sample concentration, so as to facilitate further analysis and research using a particle size analyzer. By setting a diversion partition, the ultrafine water mist dense fog area is blocked from diffusing downward to avoid affecting the operation of the particle size analyzer. First, the high-concentration ultrafine water mist cluster 7 sprayed from the nozzle 5 is isolated and diverted, and only a small portion is extracted to enter the diffusion box 4 for diffusion to dilute the concentration of the fog cluster 7 in the dispersion box and reduce it to a concentration that can be detected by the particle size analyzer. Then, the particle size analyzer is used to detect the ultrafine water mist particle size in the diffusion box 4 through the observation hole 3 to achieve the purpose of detecting the ultrafine water mist particle size. At the same time, in conjunction with this method, an ultrafine water mist cluster 7 diversion and diffusion device 11 is designed, which consists of an upper diversion plate 1 and a lower fog cluster 7 diffusion box 4. The diverter plate 1 can isolate and divert the fog group 7. The detection area is located below the diverter plate 1. The baffle of the diverter plate 1 can block most of the fog groups 7 from entering. The slope of the diverter plate 1 is connected to the diffusion box 4 by a guide channel 2. A small beam of the fog group 7 in front of the diverter plate 1 can be introduced into the diffusion box 4 and diffused and diluted through the diffusion box 4. Circular holes are opened on both sides of the diffusion box 4 as observation holes 3. The particle size analyzer is aligned with the observation hole 3 to detect the particle size of the droplets after the concentration is diluted in the diffusion box 4, thereby ultimately achieving the purpose of detecting the particle size of the droplets. The functions of the diversion and diffusion device 11 are: to isolate most of the fog group 7 above the diversion plate 1, to ensure that the detection space below is relatively pure; to introduce a small part of the fog group 7 to diffuse into the diffusion box 4, so that it diffuses in the diffusion box 4 to reduce the concentration of the fog group 7, to facilitate the laser penetration detection of the particle size analyzer; the diversion plate 1 covers the entire set of particle size analyzers under its wing surface, to ensure that the space between the receiving end and the transmitting end of the particle size analyzer, except for the droplets in the diffusion box 4 to be detected, other positions are relatively clean to avoid the influence of dense fog group 7. The ultra-fine water mist fog group 7 sprayed by the nozzle 5 is very concentrated and cannot be penetrated by the laser. The particle size analyzer cannot directly analyze it. After being sprayed, the fog group 7 diffuses in a trumpet shape. After hitting the ramp plate at the front end of the diversion plate 1, most of the fog group 7 is diverted upward and diverted to the top of the diversion plate 1. Figure 3 As shown. At the same time, a small part of the fog group 7 will diffuse into the guide channel 2 between the diverter plate 1 and the diffusion box 4, and finally enter the diffusion box 4, diffusing into a relatively thin fog group 7, reducing it to a concentration that meets the requirements of laser detection. Then, the particle size of the ultrafine water mist can be detected through the observation hole 3 using a particle size analyzer. The fog group 7 is effectively diverted to ensure that the concentration of the fog group 7 in the dispersion box is low. The particle size analyzer is placed under the wing surface of the diverter plate 1 to ensure that the detection space is relatively clean. This solves the problem that the laser cannot penetrate the water mist group 7 due to its excessive concentration, and the droplet particle size cannot be detected.
[0041] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
[0042] By setting up the flow splitter plate 1, the functions of isolating and splitting the fog mass 7 are achieved. Below the flow splitter plate 1 is the detection area. Through the baffle of the flow splitter plate 1, most of the fog mass 7 can be blocked from entering. There is a diversion channel 2 connecting the slope surface of the flow splitter plate 1 and the diffusion box 4, which can introduce a small beam of the fog mass 7 in front of the flow splitter plate 1 into the diffusion box 4, and the concentration is diluted through diffusion in the diffusion box 4. Round holes are opened on both sides of the diffusion box 4 as observation holes 3. The particle size analyzer is aligned with the observation holes 3, and the particle size of the fog droplets after concentration dilution in the diffusion box 4 can be detected, finally achieving the function of detecting the particle size of the fog droplets.
[0043] A small part of the fog mass 7 is introduced to diffuse into the diffusion box 4, so that it diffuses in the diffusion box 4 to reduce the concentration of the fog mass 7, which is convenient for the laser of the particle size analyzer to penetrate and detect; the flow splitter plate 1 covers the whole set of particle size analyzers under its wing surface, ensuring the space between the receiving end and the transmitting end of the particle size analyzer. Except for the fog droplets in the diffusion box 4 to be detected, other positions are relatively clean, avoiding the influence of the thick fog mass 7. The concentration of the ultra-fine water mist fog mass 7 sprayed by the nozzle 5 is very high, and the laser cannot penetrate it, so the particle size analyzer cannot directly analyze it. After the fog mass 7 is sprayed, it diffuses in a horn shape. After hitting the slope plate at the front end of the flow splitter plate 1, most of the fog mass 7 goes upward and is diverted above the flow splitter plate 1. At the same time, a small part of the fog mass 7 will diffuse into the diversion channel 2 between the flow splitter plate 1 and the diffusion box 4, and finally enter the diffusion box 4, diffusing into a relatively thin fog mass 7, reducing to a concentration that meets the laser detection requirements, and then the particle size of the ultra-fine water mist can be detected through the observation hole 3 using the particle size analyzer. The fog mass 7 is effectively split, ensuring that the concentration of the fog mass 7 in the dispersion box is relatively low. The particle size analyzer is placed under the wing surface of the flow splitter plate 1, ensuring that the detection space is relatively clean, ensuring that the laser penetrates the fine water mist, and effectively detecting the particle size of the fog droplets.
[0044] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A method for testing the droplet size of fine water mist, characterized in that, include: Step 1: Isolate and divert the high-concentration ultra-fine water mist sprayed from the nozzle; Step 2: Extract a portion of the mist into the diffusion box for diffusion; Step 3: Use a particle size analyzer to detect the particle size of the ultrafine water mist in the diffusion box through the observation hole.
2. The fine water mist droplet size measurement method according to claim 1, wherein In the step 1, the fog mass is isolated and diverted by a diverter plate with a slope.
3. The fine water mist droplet size measurement method according to claim 1, wherein In the step 2, the mist mass is diffused in a trumpet shape after being sprayed out. After the mist mass hits the slope of the diverter plate, part of the mist mass enters the diffusion box through the guide channel on the slope.
4. The fine water mist droplet size measurement method according to claim 1, characterized in that In step 2, the concentration of the mist is diluted by a diffusion box.
5. The fine water mist droplet size measurement method according to claim 1, wherein In step 3, the laser is emitted by the laser emitting end of the particle size analyzer, then passes through the diffusion box, and is then received by the laser receiving end of the particle size analyzer.
6. The fine water mist droplet size measurement method according to claim 1, characterized in that, The diverter plate isolates most of the mist clusters above the diverter plate.
7. The fine water mist droplet size measurement method according to claim 1, wherein The splitter plate covers the entire particle size analyzer under its wing surface.
8. The fine water mist droplet size measurement method according to claim 1, characterized in that It enters the diffusion box and diffuses into a relatively thin mist, which is reduced to a concentration that meets the requirements of laser detection. The particle size of the ultrafine water mist is detected through the observation hole using a particle size analyzer.
9. The fine water mist droplet size measurement method according to claim 1, wherein, The laser emitting end, observation hole and receiving end of the particle size analyzer are located on the same axis.
10. The fine water mist droplet size measurement method according to claim 1, characterized in that, The mist in the diffusion box overflows through openings on both sides.