Airflow simulation device

Abstract

The utility model discloses an airflow simulation device which comprises a device box with an opening in the upper end, a sealing cover hinged to one side of the opening end of the device box, a first fan installed at the front end of the outer wall of the device box, an air guide pipe communicated with the rear end of the outer wall of the device box, and a second fan installed at the rear end of the air guide pipe. An air inlet box with an opening in the upper end is arranged behind the second fan, a box cover is hinged to one side of the opening end of the air inlet box, a connecting hole is inwards formed in the front end of the outer wall of the air inlet box, an air inlet of the second fan communicates with the connecting hole, and a rectifying grating is detachably connected between the left side and the right side of the front end of the inner wall of the air inlet box in a matched mode; a control panel is arranged on one side of the outer wall of the air inlet box, a controller and a frequency converter are installed in the control panel, and a power line electrically connected with the controller is arranged on one side of the bottom of the outer wall of the controller. The device is small in occupied area, stable to mount and dismount, and capable of ensuring the stability of airflow during an experiment and improving the accuracy of an experiment result.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation devices, in particular to an airflow simulation device. Background Art

[0002] With the development of science and technology, wind tunnel tests are increasingly used in aerospace, wind power generation and other fields. A wind tunnel is an experimental device that simulates an airflow field. It generates high-speed airflow artificially and is used to test the aerodynamic performance of an object at high speed. However, traditional large wind tunnels are large in size, occupy a large area, are difficult to install and transport, and have high construction costs, making them inconvenient to promote and apply. Therefore, it is of great significance to study small wind tunnel technology.

[0003] In the prior art, the design and production of small wind tunnels mainly rely on experience accumulation and trial and error methods. These methods have limitations in optimizing wind tunnel performance and are difficult to meet a variety of test requirements. In addition, the airflow regulation performance and stability of existing small wind tunnels are poor, and the accuracy of the test results is difficult to guarantee. Utility Model Content

[0004] The utility model aims to provide an airflow simulation device which occupies a small area and is stable to install and disassemble, and which can also ensure the stability of the airflow during the experiment and improve the accuracy of the experimental results.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] An airflow simulation device, comprising a device box with an upper end open and made of a transparent material, a sealing cover that can be opened and sealed is hingedly connected to one side of the open end of the device box, a connecting rod is provided on one side of the rear end of the inner wall of the device box, through holes are provided inwardly through the front and rear ends of the outer wall of the device box, a first fan that is detachably connected and communicated with the outer wall of the device box is installed at the front end of the outer wall of the device box, an air duct that is communicated with the corresponding through hole is provided at the rear end of the outer wall of the device box, a second fan that is detachably connected and communicated with the air duct is installed at the rear end of the air duct, an air inlet box with an upper end open is provided behind the second fan, and a box cover that matches with the air inlet box is hingedly connected to one side of the open end of the air inlet box;

[0007] A connecting hole is opened inward at the front end of the outer wall of the air inlet box, and the air inlet of the second fan is connected to the connecting hole and is detachably connected thereto. Slide grooves are arranged on both the left and right sides of the front end of the inner wall of the air inlet box along its height direction, and a rectifier grille that matches with the two slide grooves is detachably connected therebetween. A control panel is arranged on one side of the outer wall of the air inlet box, and a controller and a frequency converter are installed in the control panel. The first fan, the second fan, the frequency converter and the control panel are all electrically connected to the controller, and a power cord electrically connected to the controller is arranged on one side of the bottom of the outer wall of the controller.

[0008] By adopting the above technical solution, when using, first move the device to the experimental site, open the sealing cover and fix the object or wing to be tested on the connecting rod, close the sealing cover, plug the power cord into the socket to power on the equipment, open the box cover, operate the control panel, and control the first fan and the second fan to work through the controller. The second fan draws the gas in the air inlet box and blows it into the device box after it is accelerated by the contraction of the air duct. The gas entering the device box will flow forward under the push of the second fan, so as to test the aerodynamic performance of the object, while the first fan can extract the gas in the device box, which can not only ensure that the airflow in the front half of the device box remains highly fluid, but also avoid the generation of vortices, thereby ensuring the stability of the experimental environment. During the experiment, the speed of the first fan and the second fan can also be adjusted by the frequency converter.

[0009] The utility model is further configured as follows: a first air guide scoop in the shape of a trumpet and connected to the corresponding through hole is provided between the air inlet of the first fan, and a second air guide scoop in the shape of a trumpet and connected to the connecting hole is provided between the air inlet of the second fan.

[0010] By adopting the above technical solution, the airflow entering and flowing out of the device can be quickly sucked in and discharged, ensuring the high-speed flow of the airflow in the device box.

[0011] The utility model is further configured as follows: an air inlet groove is provided above the rear end of the outer wall of the air inlet box along its length direction.

[0012] By adopting the above technical solution, when the rotation speed of the first fan and the second fan is low and the box cover is closed, the airflow entering the air inlet box will not be affected.

[0013] The utility model is further configured as follows: smoke generators are installed on both left and right sides of the bottom of the inner wall of the air inlet box.

[0014] By adopting the above technical solution, the staff can know the gas flow rate more intuitively through the flow speed of the flue gas.

[0015] The utility model is further configured as follows: a wind speed sensor is installed on one side of the inner wall of the device box above the connecting rod.

[0016] By adopting the above technical solution, it is convenient for the staff to know the flow rate of the gas in the device box, so as to make corresponding adjustments according to the progress of the experiment.

[0017] In summary, the utility model has the following beneficial effects:

[0018] First, the utility model occupies a small area, is stable to install and disassemble, and can also ensure the stability of airflow during the experiment, thereby improving the accuracy of the experimental results;

[0019] Secondly, the gas of the utility model can have a faster flow rate when entering the device box through the air guide tube, and when the gas flows in the front half of the device box, it can not only maintain a higher flow rate, but also will not form eddies to affect the accuracy of the experiment;

[0020] Thirdly, the smoke generator of the utility model can facilitate the staff to know the flow velocity state of the airflow more intuitively through the transparent device box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is mainly used to show the position and connection relationship of each component;

[0023] Figure 3 It is mainly used to show the position connection relationship between the through hole, the first air guide hopper and the first fan;

[0024] Figure 4 It is mainly used to show the position and connection relationship of the smoke generator and the rectifier grid.

[0025] In the figure: 1. device box; 11. sealing cover; 12. through hole; 13. first fan; 14. first air guide hopper; 15. air guide pipe; 16. second fan; 17. second air guide hopper; 18. connecting rod; 19. wind speed sensor; 2. air inlet box; 21. box cover; 22. connecting hole; 23. smoke generator; 24. slide; 25. rectifier grille; 26. air inlet slot; 27. control panel; 28. controller; 29. ​​inverter; 3. power cord. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example, see Figure 1-4 , an airflow simulation device, comprising a device box 1 with an upper end open and made of a transparent material, a sealing cover 11 which can be opened and sealed is hinged on one side of the open end of the device box 1, a connecting rod 18 is arranged on one side of the rear end of the inner wall of the device box 1, a wind speed sensor 19 is installed on one side of the inner wall of the device box 1 above the connecting rod 18, a through hole 12 is opened inwardly at both the front and rear ends of the outer wall of the device box 1, a first fan 13 which is detachably connected and communicated with the device box 1 is installed at the front end of the outer wall of the device box 1, a first air guide scoop 14 which is horn-shaped and communicated with the first fan 13 is arranged between the air inlet of the first fan 13 and the corresponding through hole 12, an air guide pipe 15 which is communicated with the corresponding through hole 12 is arranged at the rear end of the outer wall of the device box 1, and a second fan 16 which is detachably connected and communicated with the device box 1 is installed at the rear end of the air guide pipe 15.

[0031] An air inlet box 2 with an open upper end is provided at the rear of the second fan 16, and a box cover 21 matching with the air inlet box 2 is hinged on one side of the open end of the air inlet box 2. An air inlet groove 26 is provided above the rear end of the outer wall of the air inlet box 2 along its length direction, and a smoke generator 23 is installed on both sides of the left and right sides of the bottom of the inner wall of the air inlet box 2. A connecting hole 22 is provided inwardly at the front end of the outer wall of the air inlet box 2, and the air inlet of the second fan 16 is connected to the connecting hole 22 and is detachably connected thereto.

[0032] The air inlet of the second fan 16 is connected to a second air guide scoop 17 which is connected to the connecting hole 22 and is in the shape of a trumpet. A slide groove 24 is arranged on both sides of the front end of the inner wall of the air inlet box 2 along its height direction. A rectifier grille 25 which is detachably connected to the two slide grooves 24 is arranged to cooperate with it. A control panel 27 is arranged on one side of the outer wall of the air inlet box 2. A controller 28 and a frequency converter 29 are installed in the control panel 27. The first fan 13, the second fan 16, the wind speed sensor 19, the smoke generator 23, the frequency converter 29 and the control panel 27 are all electrically connected to the controller 28. A power cord 3 electrically connected to the controller 28 is arranged on one side of the bottom of the outer wall of the controller 28.

[0033] Usage: When using, first move the device to the experimental site, open the sealing cover 11 and fix the object or wing to be tested on the connecting rod 18, close the sealing cover 11, plug the power cord 3 into the socket to power on the device, operate the control panel 27, and control the first fan 13, the second fan 16 and the smoke generator 23 to work through the controller 28. The smoke generated by the smoke generator 23 will be temporarily stored in the air inlet box 2, and the external gas will enter the air inlet box 2 through the air inlet slot 26. The second fan 16 will be driven by the second air guide. The scoop 17 and the connecting hole 22 draw the gas and smoke in the air inlet box 2 and accelerate them through the air duct 15, and then blow them into the device box 1 through the corresponding through hole 12. Before entering the air duct 15, the gas and smoke will pass through the rectifying grid 25 in the slide slot 24, allowing the gas and smoke to flow forward more evenly, and the gas entering the device box 1 will flow forward under the push of the second fan 16, so as to test the aerodynamic performance of the object, and the staff can intuitively see the flow rate of the gas through the smoke flowing in the transparent device box 1.

[0034] The first fan 13 and the first air guide scoop 14 can extract the gas in the device box 1, which can not only ensure that the airflow in the front half of the device box 1 remains highly fluid, but also avoid the generation of vortices, thereby ensuring the stability of the experimental environment. During the experiment, the staff can also adjust the rotation speed of the first fan 13 and the second fan 16 through the frequency converter 29 to simulate different experimental environments, and the wind speed sensor 19 can monitor the flow rate of the high-speed flowing gas entering the device box 1, so that the staff can adjust the experimental environment. When the rotation speed of the first fan 13 and the second fan 16 is high, the staff can open the box cover 21 to form a certain angle between the box cover 21 and the opening end of the air inlet box 2 to facilitate the entry of a large amount of gas.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An airflow simulation device, comprising a device box (1) with an upper end opening and made of a transparent material, Features: A sealing cover (11) which can be opened and sealed is hingedly connected to one side of the opening end of the device box (1); a connecting rod (18) is provided on one side of the rear end of the inner wall of the device box (1); through holes (12) are provided inwardly through the front and rear ends of the outer wall of the device box (1); a first fan (13) which is detachably connected to and communicated with the first fan (13) is installed at the front end of the outer wall of the device box (1); an air duct (15) which is communicated with the corresponding through hole (12) is provided at the rear end of the outer wall of the device box (1); a second fan (16) which is detachably connected to and communicated with the first fan (13) is installed at the rear end of the outer wall of the device box (1); an air inlet box (2) with an open upper end is provided behind the second fan (16); a box cover (21) which cooperates with the first fan (13) is hingedly connected to one side of the opening end of the air inlet box (2); A connection hole (22) is provided inwardly at the front end of the outer wall of the air inlet box (2); the air inlet of the second fan (16) is connected to the connection hole (22) and is detachably connected thereto; slide grooves (24) are provided on both the left and right sides of the front end of the inner wall of the air inlet box (2) along its height direction; a rectifier grille (25) is detachably connected therebetween; a control panel (27) is provided on one side of the outer wall of the air inlet box (2); a controller (28) and a frequency converter (29) are installed in the control panel (27); the first fan (13), the second fan (16), the frequency converter (29) and the control panel (27) are all electrically connected to the controller (28); a power cord (3) electrically connected to the controller (28) is provided on one side of the bottom of the outer wall of the controller (28).

2. An airflow simulation device according to claim 1, Features: A trumpet-shaped first air guide scoop (14) is provided between the air inlet of the first fan (13) and the corresponding through hole (12), and the air inlet of the second fan (16) is connected to a trumpet-shaped second air guide scoop (17) which is connected to the connecting hole (22).

3. An airflow simulation device according to claim 1, Features: An air inlet groove (26) is provided above the rear end of the outer wall of the air inlet box (2) along its length direction.

4. An airflow simulation device according to claim 1, Features: Smoke generators (23) are installed on both left and right sides of the bottom of the inner wall of the air inlet box (2).

5. An airflow simulation device according to claim 1, Features: A wind speed sensor (19) is installed on one side of the inner wall of the device box (1) above the connecting rod (18).

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