A low-speed wind tunnel supercooled large water droplet splash simulation device

Abstract

The present invention relates to the technical field of wind tunnel simulation devices, specifically a low-speed wind tunnel supercooled large water droplet splash simulation device, comprising a load-bearing sewage discharge component and two observation plates, a boundary low-resistance simulation mechanism disposed on the load-bearing sewage discharge component, a droplet spraying mechanism installed on one side of the boundary low-resistance simulation mechanism, and a discharge mechanism installed on the other side of the droplet spraying mechanism; the discharge mechanism comprises an outer cover plate and two outer tubes installed at both ends of the outer cover plate. By using the boundary low-resistance simulation mechanism as the main body of the circulating airflow and arranging the droplet spraying mechanism in the middle of the boundary low-resistance simulation mechanism and the discharge mechanism, when the airflow is continuously released along the discharge mechanism, the inner cavity of the wind tunnel guides the airflow in an unobstructed circulation around the surroundings, thereby accurately simulating the airflow simulated by the device and the ambient airflow, and avoiding the boundary effect of the inner wall of the device on the airflow.

Description

Technical Field

[0001] The invention relates to the technical field of wind tunnel simulation devices, in particular to a low-speed wind tunnel supercooled large water droplet splash simulation device. Background Art

[0002] The principle of supercooled water droplet simulation in a low-speed wind tunnel is to create a low-temperature, low-pressure, and high-humidity cloud environment. The airflow then simulates the icing process on aircraft components as they pass through the clouds. Specifically, a low-speed wind tunnel uses a fan to generate high-speed airflow, which is accelerated and controlled through ducts to create the airflow required for low-speed wind tunnel experiments.

[0003] At present, there are major drawbacks in the low-speed wind tunnel supercooled water droplet simulation test device. Due to the boundary problem of the artificially set wind tunnel, the airflow passing through the wind tunnel will produce eddy currents under the obstruction state of the device boundary, that is, the boundary effect. As the airflow velocity and air pressure increase, the interference of the boundary effect will continue to increase, which will have a serious impact on the accuracy of the experiment.

[0004] In view of this, a low-speed wind tunnel supercooled large water droplet splash simulation device was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] To this end, the technical solution adopted in the present invention is:

[0007] A low-speed wind tunnel supercooled large water droplet splash simulation device, comprising a load-bearing sewage discharge component and two observation plates, a boundary low-resistance simulation mechanism arranged on the load-bearing sewage discharge component, a droplet spraying mechanism installed on one side of the boundary low-resistance simulation mechanism, and a discharge mechanism installed on the other side of the droplet spraying mechanism; the discharge mechanism comprises an outer cover plate, two outer tubes installed at both ends of the outer cover plate, two outer plates installed at the bottom of the two outer tubes, a horizontal flow simulation plate fixedly installed on the outer cover plate and the outer ends of the two outer plates, and a flow guide outer tube fixedly installed on the horizontal flow simulation plate, and the two outer tubes are respectively plugged into At both ends of the guide outer tube; the droplet spraying mechanism includes two bottom baffles fixedly installed on the bottom of the two outer plates, two top baffles fixedly installed on the top of the two outer plates and a center cover plate installed on the outer cover plate; the boundary low-resistance simulation mechanism includes fixed plates installed on the top baffles and the bottom baffles, and the number of fixed plates is two, two energy supply sleeves fixedly installed on the two fixed plates and a main cover plate installed on the outside of the two energy supply sleeves, and the energy supply sleeve is provided with an air suction groove in the plate facing the inner side of the main cover plate, and a heat exchange plate is installed on the top of the energy supply sleeve.

[0008] In a preferred example, the present invention can be further configured as follows: the boundary low-resistance simulation mechanism also includes a seal fixedly mounted on one end of the air suction groove, a gasket mounted on the other end of the air suction groove, an inner tube plugged into the middle of the inner cavity of the energy supply sleeve, a gasket fixedly mounted on the inner wall of the inner tube, a linkage wheel movably mounted inside the gasket, a plug fixedly mounted on the outer end of the energy supply sleeve, an air supply pipe connected to the plug, a reversing impeller movably mounted between the inner tube and the plug, a shaft movably mounted in the plug and the gasket, an impeller mounted in the middle of the shaft, a tail gear fixedly mounted on the rear end of the shaft and meshing with the linkage wheel, and a head gear fixedly mounted on the head end of the shaft;

[0009] A circular cavity is provided between the energy supply sleeve and the inner tube for transferring the condensed liquid.

[0010] In a preferred embodiment of the present invention, the droplet spreading mechanism may be further configured as follows: the droplet spreading mechanism further comprises two horizontal tubes installed between the central cover plate and the two top baffles, wherein a sleeve is provided in the middle of the inner side of the horizontal tube, a spreading roller movably installed in the sleeve, a roller gear fixedly installed on the spreading roller, and the roller gear is located in the inner cavity of the horizontal tube, and a vertical tube movably installed on the outside of the spreading roller;

[0011] The vertical pipe is fixedly installed inside the central cover plate.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the load-bearing sewage discharge assembly includes a base mounted on the ground, a sewage discharge trough is provided on the top of the base, a sewage storage cavity is provided inside the base, and the sewage discharge trough is connected to the sewage storage cavity, a liquid storage cavity is provided in the middle of the top surface of the base, a top plate is fixedly mounted on the top of the liquid storage cavity, and a side sewage discharge pipe is connected to the outer wall of the base, and the side sewage discharge pipe is connected to the liquid storage cavity;

[0013] Two liquid inlet pipes are installed on the top of the top plate, and the two liquid inlet pipes are communicated with the liquid storage cavity.

[0014] In a preferred example, the present invention can be further configured as follows: two inwardly concave grooves are provided at the bottom of the central cover plate, and the two spreading rollers are located at the center of the two grooves. As the spreading rollers rotate, the droplets squeezed out and rising from the spreading rollers will be blocked by the grooves, thereby preventing the rising droplets from interfering with the flow direction of the airflow.

[0015] In a preferred embodiment, the present invention can be further configured as follows: the boundary low-resistance simulation mechanism further includes two clamps fixedly mounted on the inner bottom of the fixing plate and plug-ins fixed in the two clamps;

[0016] The bottom of the energy supply sleeve is provided with a socket, and a telescopic tube is installed in the socket, and the bottom end of the socket is plugged into the liquid inlet pipe;

[0017] The telescopic tube is composed of a mother tube and a daughter tube, wherein the daughter tube is fixed in the insertion hole and the mother tube is plugged into the plug-in unit.

[0018] In a preferred embodiment, the present invention can be further configured as follows: the boundary low resistance simulation mechanism further includes a sealing door plate fixedly mounted on the main cover plate, a partition plate fixedly mounted on the inner side of the sealing door plate, and a filter plate mounted on the other side of the partition plate;

[0019] The filter plate is provided with filter holes inside for filtering dirt carried in the air flow.

[0020] In a preferred example, the present invention can be further configured as follows: the energy supply sleeve is penetrated into the sealing door plate and the filter plate gap and an arc-shaped groove is opened on the tube wall for actively sucking in water vapor entering the sealing door plate and the filter plate gap.

[0021] In a preferred embodiment, the present invention can be further configured as follows: U-shaped grooves are formed inside the outer plate and the fixed plate, and rubber sealing strips are fixedly installed on the inner walls of the U-shaped grooves;

[0022] The observation panel is explosion-proof transparent glass.

[0023] In a preferred example, the present invention can be further configured as follows: two holes are provided on the pipe wall of the spreading roller extending through the vertical pipe, and evenly distributed circular holes are provided on the pipe wall of the spreading roller toward the center of the wind tunnel.

[0024] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows:

[0025] 1. The present invention uses a boundary low-resistance simulation mechanism as the main body of the circulating airflow, and arranges a droplet spraying mechanism in the middle of the boundary low-resistance simulation mechanism and the discharge mechanism. When the airflow is continuously released along the discharge mechanism, the wind tunnel cavity guides the airflow in an unobstructed circulation around it, thereby achieving accurate simulation of the airflow simulated by the device and the ambient airflow, avoiding the boundary effect caused by the inner wall of the device on the airflow.

[0026] 2. The present invention uses the flowing airflow as the kinetic energy for droplet throwing. As the airflow blows directly, the thrown droplets will follow the flow direction of the airflow and simulate the trajectory of the airflow in the wind tunnel. It also simulates an effective low-speed wind tunnel environment under low temperature conditions, thereby improving the accuracy of wind tunnel test data.

[0027] 3. The present invention uses a load-bearing sewage discharge assembly as the basic carrier for wind tunnel testing. As the test progresses, the dirt generated by the airflow will be filtered out by the filter plate, and the liquid will pass through the filter plate under the action of the airflow and be sucked into the slots of the inner tube. The fallen dirt will be stored in the dirt storage chamber, and the liquid condensed along the gap between the inner tube and the energy supply sleeve will enter the liquid storage chamber through the telescopic tube, thereby preventing the accumulated liquid and dirt from interfering with subsequent experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the present invention when in use;

[0029] Figure 2 This is a schematic diagram of a load-bearing sewage discharge assembly of the present invention;

[0030] Figure 3 It is a schematic diagram of the explosion of the high altitude discharge mechanism of the present invention;

[0031] Figure 4 For the present invention Figure 3 Schematic diagram from above;

[0032] Figure 5 Schematic diagram of the liquid droplet spraying mechanism of the present invention;

[0033] Figure 6 Schematic diagram of the explosion of the liquid droplet throwing mechanism of the present invention;

[0034] Figure 7 For the present invention Figure 6 A magnified schematic diagram of point A in the middle;

[0035] Figure 8 Schematic diagram of the explosion of the low-resistance boundary simulation mechanism of the present invention;

[0036] Figure 9 For the present invention Figure 8 A magnified schematic diagram of point B in the middle;

[0037] Figure 10 It is a cross-sectional schematic diagram of the inner tube of the present invention.

[0038] Reference numerals:

[0039] 100, load-bearing sewage assembly; 110, base; 1101, sewage storage chamber; 1102, liquid storage chamber; 1103, top plate; 1104, sewage trough; 120, side sewage pipe; 130, liquid inlet pipe;

[0040] 200, discharge mechanism; 210, outer plate; 220, outer tube; 230, outer cover; 240, advection simulation board; 250, diversion outer tube;

[0041] 300, droplet spreading mechanism; 310, top baffle; 320, bottom baffle; 330, center cover; 340, vertical pipe; 350, horizontal pipe; 360, spreading roller; 3601, roller gear;

[0042] 400, boundary low-resistance simulation mechanism; 410, fixing plate; 4101, fixture; 4102, plug-in; 420, energy supply sleeve; 4201, suction groove; 4202, socket; 4203, seal; 4204, gasket; 430, main cover; 4301, heat exchange plate; 440, sealing door plate; 4401, partition plate; 4402, filter plate; 450, telescopic tube; 460, inner tube; 4601, gasket; 4602, linkage wheel; 4603, shaft; 4604, tail gear; 4605, impeller; 4606, head gear; 4607, plug; 4608, air supply pipe; 470, counter-rotating impeller;

[0043] 500. Observation board. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0045] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0046] A low-speed wind tunnel supercooled large water droplet splash simulation device provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0047] Example 1:

[0048] Combine Figures 1 to 10 As shown, the present invention provides a low-speed wind tunnel supercooled large water droplet splash simulation device, including a load-bearing sewage discharge component 100 and two observation plates 500, a boundary low-resistance simulation mechanism 400 arranged on the load-bearing sewage discharge component 100, a droplet sprinkling mechanism 300 installed on one side of the boundary low-resistance simulation mechanism 400, and a discharge mechanism 200 installed on the other side of the droplet sprinkling mechanism 300. After the load-bearing sewage discharge component 100 is placed on the ground, it is used to store filtered and fallen dirt and residual sewage to prevent the airflow from entraining the dirt again and polluting the inner wall of the device. The boundary low-resistance simulation mechanism 400 is used to output and actively inhale water vapor, and balance the airflow velocity and airflow pressure after entering the wind tunnel. The droplet sprinkling mechanism 300 is used to provide anti-upward protection for the spilled liquid to prevent the upward water droplets from obstructing the direction of the airflow. The discharge mechanism 200 is used to balance the air pressure entering the wind tunnel to ensure the constancy of the experimental air pressure.

[0049] The discharge mechanism 200 includes an outer cover plate 230, two outer tubes 220 installed at both ends of the outer cover plate 230, two outer plates 210 installed at the bottom of the two outer tubes 220, a horizontal flow simulation plate 240 fixedly installed on the outer cover plate 230 and the outer ends of the two outer plates 210, and a flow guide outer tube 250 fixedly installed on the horizontal flow simulation plate 240, with the two outer tubes 220 respectively plugged into the two ends of the flow guide outer tube 250;

[0050] The droplet spraying mechanism 300 includes two bottom baffles 320 fixedly mounted on the bottom of the two outer plates 210, two top baffles 310 fixedly mounted on the top of the two outer plates 210, and a center cover plate 330 mounted on the outer cover plate 230;

[0051] The boundary low-resistance simulation mechanism 400 includes two fixing plates 410 mounted on the top baffle 310 and the bottom baffle 320, two energy supply sleeves 420 fixedly mounted on the two fixing plates 410, and a main cover plate 430 mounted on the outside of the two energy supply sleeves 420. The energy supply sleeves 420 are provided with an air suction groove 4201 in the plate facing the inside of the main cover plate 430, and a heat exchange plate 4301 is mounted on the top of the energy supply sleeves 420, a sealing door plate 440 fixedly mounted on the main cover plate 430, a partition plate 4401 fixedly mounted on the inside of the sealing door plate 440, and a filter plate 4402 mounted on the other side of the partition plate 4401.

[0052] The filter plate 4402 has filter holes formed inside for filtering dirt carried in the air flow.

[0053] Two clamps 4101 fixedly mounted on the inner bottom of the fixing plate 410 and an insert 4102 fixed in the two clamps 4101;

[0054] The bottom of the energy supply sleeve 420 is provided with a socket 4202, and a telescopic tube 450 is installed in the socket 4202, and the bottom end of the socket 4202 is plugged into the liquid inlet pipe 130;

[0055] The telescopic tube 450 is composed of a main tube and a sub-tube, wherein the sub-tube is fixed in the socket 4202 and the main tube is plugged into the plug 4102;

[0056] The seal 4203 is fixedly mounted on one end of the air suction groove 4201, the gasket 4204 is mounted on the other end of the air suction groove 4201, and is inserted into the inner tube 460 in the middle of the inner cavity of the energy supply sleeve 420, the gasket 4601 is fixedly mounted on the inner wall of the inner tube 460, the linkage wheel 4602 is movably mounted inside the gasket 4601, the plug 4607 is fixedly mounted on the outer end of the energy supply sleeve 420, the air supply pipe 4608 is connected to the plug 4607, the counter-rotating impeller 470 is movably mounted between the inner tube 460 and the plug 4607, the shaft 4603 is movably mounted in the plug 4607 and the gasket 4204, the impeller 4605 is mounted in the middle of the shaft 4603, the tail gear 4604 is fixedly mounted on the rear end of the shaft 4603 and meshed with the linkage wheel 4602, and the head gear 4606 is fixedly mounted on the front end of the shaft 4603;

[0057] A circular cavity is provided between the energy supply sleeve 420 and the inner tube 460 for transferring the condensed liquid;

[0058] An arc-shaped notch is provided on the wall of the energy supply sleeve 420 that passes through the gap between the sealing door plate 440 and the filter plate 4402 , so as to actively absorb the water vapor entering the gap between the sealing door plate 440 and the filter plate 4402 .

[0059] When the device is in use, the air flow is output through the air supply pipe 4608, along the hole in the middle of the plug 4607, and the air flow through the air supply pipe 4608 will enter the inner cavity of the inner tube 460 along the hole. Under the action of the air flow, the impeller 4605 and the shaft 4603 rotate, and the first gear 4606 fixedly installed at the head end of the shaft 4603 will drive the roller gear 3601 and the throwing roller 360. After the test solution input through the vertical pipe 340 enters the inner cavity of the throwing roller 360, the liquid will be thrown out from the throwing roller 360 under the action of centrifugal force. At the same time, the air flow after passing through the inner tube 460, the horizontal tube 350 and the outer tube 220 will enter the interior of the horizontal tube 350, and the two air streams will be sucked into the air. After the flows intersect, the intersecting airflows will be released from the guide outer tube 250 and the guide outer tube 250, and finally enter the closed wind tunnel environment. At this time, the ejected water droplets will display the trajectory of the airflow, and the linked wheel 4602 driven by the tail gear 4604 will assist in rotating the reversing impeller 470. At this time, the reversing impeller 470 and the impeller 4605 rotate in opposite directions. Therefore, the water vapor filtered by the filter plate 4402 will be actively inhaled along the arc-shaped groove on the wall of the energy supply sleeve 420, thereby achieving dynamic balance of the airflow. In this state, there will be no boundary effect around the airflow, which can perfectly simulate the airflow flow state in the natural environment to improve the accuracy of the experiment.

[0060] Example 2:

[0061] Combine Figure 2 and Figure 8 As shown, based on Example 1, the load-bearing sewage discharge assembly 100 includes a base 110 installed on the ground, a sewage discharge trough 1104 is defined on the top of the base 110, a sewage storage chamber 1101 is defined inside the base 110, and the sewage discharge trough 1104 is connected to the sewage storage chamber 1101, a liquid storage chamber 1102 is defined in the middle of the top surface of the base 110, a top plate 1103 is fixedly mounted on the top of the liquid storage chamber 1102, and a side sewage discharge pipe 120 is connected to the outer wall of the base 110, and the side sewage discharge pipe 120 is connected to the liquid storage chamber 1102;

[0062] Two liquid inlet pipes 130 are installed on the top of the top plate 1103 , and the two liquid inlet pipes 130 are connected to the liquid storage chamber 1102 .

[0063] Specifically, when the airflow enters the wind tunnel, the dirt and residual sewage filtered by the filter plate 4402 will gather on the top surface of the base 110, and under the action of airflow pressurization, the dirt and sewage will enter the sewage trough 1104 and the inside of the sewage storage chamber 1101, and the stored dirt and sewage will be extracted outward through the pipe. During the extraction process, they are blown by the airflow, thereby accelerating the drying speed of the inner wall of the sewage storage chamber 1101, while ensuring the cleanliness of the top surface of the base 110 to avoid interference with subsequent experiments.

[0064] Example 3:

[0065] Combine Figures 2 to 10 As shown, in the above embodiment, the droplet spreading mechanism 300 further includes two horizontal tubes 350 installed between the central cover plate 330 and the two top baffles 310, and a sleeve is provided in the middle of the inner side of the horizontal tube 350, a spreading roller 360 movably installed in the sleeve, a roller gear 3601 fixedly installed on the spreading roller 360, and the roller gear 3601 is located in the inner cavity of the horizontal tube 350, and a vertical tube 340 movably installed on the outside of the spreading roller 360;

[0066] The vertical pipe 340 is fixedly installed inside the central cover plate 330;

[0067] The bottom of the central cover plate 330 is provided with two inwardly concave grooves, and the two spreading rollers 360 are located at the center of the two grooves. As the spreading rollers 360 rotate, the rising droplets squeezed out of the spreading rollers 360 are blocked by the grooves, preventing the rising droplets from interfering with the flow direction of the airflow.

[0068] The outer plate 210 and the fixed plate 410 are both provided with U-shaped grooves, and the inner walls of the U-shaped grooves are fixedly installed with rubber sealing strips;

[0069] The observation panel 500 is explosion-proof transparent glass;

[0070] Two holes are opened on the pipe wall of the spreading roller 360 that passes through the vertical pipe 340, and evenly distributed circular holes are opened on the pipe wall of the spreading roller 360 toward the center of the wind tunnel.

[0071] Specifically, rubber seals are fixedly installed on the top of the bottom baffle 320 and the bottom of the top baffle 310 to enhance the sealing of the top and bottom of the observation panel 500. The transverse grooves at the bottom of the outer cover plate 230, the center cover plate 330, and the main cover plate 430 are used to provide a constant pressure environment for the passing airflow. By optimizing the curvature of the inner wall of the device, the boundary effect of the airflow after passing through the wind tunnel is reduced. At the same time, the airflow will overflow along the two sides of the wind tunnel at a constant pressure, ultimately maintaining the stability of the airflow and avoiding the occurrence of vortexes due to uneven input and output pressures of the airflow.

[0072] In addition, the state of the airflow after entering the wind tunnel can be directly observed through the two observation panels 500, and the true trajectory of the airflow can be displayed with the assistance of the droplets, thereby improving the accuracy of the experimental data.

[0073] The working principle and usage process of the present invention are as follows: when the device is in the experimental period, air is supplied to the inner cavities of the two inner tubes 460 through the two air supply pipes 4608. When the air flow passes through the inner tube 460 toward the port of the gasket 4204, due to the contraction of the ports of the inner tube 460 and the gasket 4204, the air flow will help the impeller 4605 and the shaft 4603 to rotate, and the tail gear 4604 and the head gear 4606 fixedly installed on the shaft 4603 will be synchronously assisted to rotate, and the tail gear 4604 drives the linkage wheel 4602. With the linkage of the linkage wheel 4602, the counter-rotating impeller 470 movably installed between the inner tube 460, the energy supply sleeve 420 and the plug 4607 will also be driven, and the annular cavity in the energy supply sleeve 420 and the inner tube 460 will generate suction, thereby accelerating the absorption of filtered water vapor to maintain a dynamic balance between airflow input and output;

[0074] At the same time, the first gear 4606 drives the roller gear 3601 and the throwing roller 360. After the external hose is connected to the top of the vertical pipe 340, the liquid is continuously fed into the vertical pipe 340. The solution is continuously pressurized in the inner cavity of the vertical pipe 340 and enters the inner cavity of the throwing roller 360. The high-speed rotating throwing roller 360 will centrifugally eject the solution that has entered its inner cavity, and the ejected large droplets can simulate water droplets falling in the natural environment.

[0075] The airflow output from the inner tube 460 will pass through the outer tube 220 and the guide outer tube 250 in sequence, and finally the two airflows will be discharged outward along the slots on the inner side of the guide outer tube 250, and the airflow discharged from the slots on the inner side of the guide outer tube 250 will continue to blow along the slots inside the horizontal flow simulation board 240 at a constant pressure toward the cavity formed by the discharge mechanism 200, the droplet spraying mechanism 300 and the boundary low-resistance simulation mechanism 400. At this time, the closed inner cavity formed by the discharge mechanism 200, the droplet spraying mechanism 300 and the boundary low-resistance simulation mechanism 400 can simulate the airflow layer of the external environment, and in order to avoid the inner cavity of the device The boundary of the impeller 470 that rotates in the opposite direction to the impeller 4605 will actively inhale the airflow filtered by the filter plate 4402. At the same time, the airflow entering the discharge mechanism 200, the droplet spraying mechanism 300 and the inner cavity of the boundary low-resistance simulation mechanism 400 will not be obstructed on all sides, thereby avoiding the obstruction of the airflow by the inner wall of the experimental equipment during the transmission wind tunnel test, which in turn causes boundary problems in the blown airflow. The experimental device avoids the boundary effect or boundary interference problems by performing unobstructed attraction on all sides of the blown airflow, thereby improving the accuracy of the simulation.

[0076] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A low-speed wind tunnel supercooled large water droplet splash simulation device, including a load-bearing sewage discharge component and two observation panels, characterized in that: It also includes a boundary low-resistance simulation mechanism provided on the load-bearing sewage discharge assembly, a droplet spraying mechanism installed on one side of the boundary low-resistance simulation mechanism, and a discharge mechanism installed on the other side of the droplet spraying mechanism; The discharge mechanism includes an outer cover plate, two outer tubes installed at both ends of the outer cover plate, two outer plates installed at the bottom of the two outer tubes, a horizontal flow simulation plate fixedly installed on the outer cover plate and the outer ends of the two outer plates, and a flow guide outer tube fixedly installed on the horizontal flow simulation plate, and the two outer tubes are respectively plugged into the two ends of the flow guide outer tube; The droplet spraying mechanism includes two bottom baffles fixedly mounted on the bottom of the two outer plates, two top baffles fixedly mounted on the top of the two outer plates, and a center cover plate mounted on the outer cover plate; The boundary low-resistance simulation mechanism includes two fixed plates installed on the top baffle and the bottom baffle, two energy supply sleeves fixedly installed on the two fixed plates and a main cover plate installed on the outside of the two energy supply sleeves, and the energy supply sleeve is provided with an air suction groove in the plate facing the inner side of the main cover plate, a seal fixedly installed at one end of the air suction groove, a gasket installed at the other end of the air suction groove, an inner tube plugged into the middle of the inner cavity of the energy supply sleeve, a gasket fixedly installed on the inner wall of the inner tube, a linkage wheel movably installed inside the gasket, a plug fixedly installed at the outer end of the energy supply sleeve, an air supply pipe connected to the plug, a reversing impeller movably installed between the inner tube and the plug, a shaft movably installed in the plug and the gasket, an impeller installed in the middle of the shaft, a tail gear fixedly installed at the tail end of the shaft and meshing with the linkage wheel, and a head gear fixedly installed at the head end of the shaft; A circular cavity is provided between the energy supply sleeve and the inner tube for transmitting condensed liquid.

2. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The droplet spreading mechanism also includes two horizontal tubes installed between the central cover plate and the two top baffles, and a sleeve is provided in the middle of the inner side of the horizontal tube, a spreading roller movably installed in the sleeve, a roller gear fixedly installed on the spreading roller, and the roller gear is located in the inner cavity of the horizontal tube, and a vertical tube movably installed on the outside of the spreading roller; The vertical pipe is fixedly installed inside the central cover plate.

3. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The load-bearing sewage discharge assembly includes a base installed on the ground, a sewage discharge groove is provided on the top of the base, a sewage storage cavity is provided inside the base, and the sewage discharge groove is connected to the sewage storage cavity, a liquid storage cavity is provided in the middle of the top surface of the base, a top plate is fixedly installed on the top of the liquid storage cavity, and a side sewage discharge pipe is connected to the outer wall of the base, and the side sewage discharge pipe is connected to the liquid storage cavity; A heat exchange plate is installed on the top of the energy supply sleeve, and two liquid inlet pipes are installed on the top of the top plate, and the two liquid inlet pipes are connected to the liquid storage cavity.

4. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 2, characterized in that: The bottom of the center cover plate is provided with two inwardly concave grooves, and the two spreading rollers are located at the center of the two grooves. As the spreading rollers rotate, the droplets squeezed out and rising from the spreading rollers will be blocked by the grooves, preventing the rising droplets from interfering with the flow direction of the airflow.

5. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The boundary low resistance simulation mechanism also includes two clamps fixedly mounted on the inner bottom of the fixing plate and plug-ins fixed in the two clamps; The bottom of the energy supply sleeve is provided with a socket, and a telescopic tube is installed in the socket, and the bottom end of the socket is plugged into the liquid inlet pipe; The telescopic tube is composed of a mother tube and a daughter tube, wherein the daughter tube is fixed in the insertion hole and the mother tube is plugged into the plug-in unit.

6. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The boundary low resistance simulation mechanism also includes a sealing door plate fixedly mounted on the main cover plate, a partition plate fixedly mounted on the inner side of the sealing door plate, and a filter plate mounted on the other side of the partition plate; The filter plate is provided with filter holes inside for filtering dirt carried in the air flow.

7. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The energy supply sleeve passes through the sealing door plate and the tube wall in the gap between the filter plate and is provided with an arc-shaped notch for actively sucking in the water vapor entering the gap between the sealing door plate and the filter plate.

8. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 1, characterized in that: The outer plate and the fixed plate are both provided with U-shaped grooves, and the inner walls of the U-shaped grooves are fixedly installed with rubber sealing strips; The observation panel is explosion-proof transparent glass.

9. The low-speed wind tunnel supercooled large water droplet splash simulation device according to claim 2, characterized in that: The spreading roller is provided with two holes on the pipe wall extending through the interior of the vertical pipe, and the spreading roller is provided with evenly distributed circular holes on the pipe wall facing the center of the wind tunnel.

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