Multi-fan direct-current breeze wind tunnel

Abstract

The utility model discloses a multi-fan direct-current breeze wind tunnel, and belongs to the technical field of wind tunnels. The device comprises a power section, a contraction section, a rectification section, a test section and an exhaust diffusion section which are sequentially communicated in the airflow direction, a honeycomb device is arranged in the rectification section, and the test section comprises a rotating disc; the multi-fan direct current breeze wind tunnel provided by the utility model can provide a high-efficiency test environment for users so as to meet various scientific research requirements.

Description

Technical Field

[0001] This utility model relates to the field of wind tunnel technology, and specifically to a multi-fan DC micro-wind tunnel. Background Technology

[0002] A wind tunnel is a tubular experimental device that artificially generates and controls airflow to simulate the flow of gas around an aircraft or physical object. It can also measure the effects of airflow on the object and observe physical phenomena. It is one of the most commonly used and effective tools for conducting aerodynamic experiments.

[0003] Wind tunnel testing is an indispensable part of aircraft development. It plays a vital role not only in the research and development of aerospace engineering, but also, with the development of industrial aerodynamics, in fields such as transportation, building construction, and wind energy utilization.

[0004] In existing wind tunnel technologies, simulating micro-wind environments typically requires complex control systems and large equipment, which not only increases costs but also complicates operation. Therefore, developing a multi-fan DC micro-wind tunnel that is simple in structure, low in cost, and easy to operate is of great significance for meeting specific testing needs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a multi-fan DC micro-wind tunnel capable of simulating natural environments. It is suitable for wind tunnel testing in fields such as aviation, automotive, and construction, as well as scientific research experiments with special requirements for micro-wind environments. It features a small footprint, compact structure, simple operation, high safety level, and good visibility. The inlet contraction section of this invention has a honeycomb rectifier with an 8:1 compression ratio, ensuring smooth airflow into the working section and improving airflow quality in the test section. The working area of ​​the test section is made of transparent acrylic plastic, allowing clear observation of the model. Appropriate template connection points are provided on the side walls and top of the working section for easy installation and removal of the measurement tube head, resulting in better sealing and preventing interference with measurement results.

[0006] To achieve the above objectives, the present invention proposes the following technical solution: a multi-fan DC micro-wind tunnel, comprising a power section, a contraction section, a rectification section, a test section, and an exhaust diffusion section connected sequentially along the airflow direction, wherein the rectification section is provided with a honeycomb device, and the test section includes a turntable.

[0007] Preferably, the honeycomb unit is a regular hexagonal honeycomb unit with a side-to-side distance of 16mm and a unit length of 220mm.

[0008] Preferably, the power section adopts a high-performance, low-noise axial fan, which mainly consists of a housing, blades, a hub and shaft system, a motor and its support, anti-rotation plates, flow guide support plates, and a fairing.

[0009] Preferably, the diameter of the turntable is 1.0m and the rotation angle is 0 to 360°.

[0010] Preferably, the fans in the power section are arranged in a 20×20 square array.

[0011] Preferably, the exhaust diffuser section is made of Q235 material.

[0012] The beneficial effects of this utility model are:

[0013] (1) This device can effectively simulate a micro-wind environment by using multiple fans in combination, providing a new tool for research and testing in related fields.

[0014] (2) The wind tunnel adopts an open-loop intake structure, which is compact and occupies a small area.

[0015] (3) The device has a transparent working section with excellent visibility, which makes it easy for researchers to observe the progress of the experiment. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the present invention;

[0017] Attached reference numerals: 1. Power section, 2. Contraction section, 3. Rectification section, 31. Honeycomb unit, 4. Test section, 41. Turntable, 5. Exhaust diffusion section. Detailed Implementation

[0018] The technical solutions of the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the multi-fan DC micro-wind tunnel disclosed in this utility model includes a power section 1, a contraction section 2, a rectification section 3, a test section 4, and an exhaust diffusion section 5 that are connected sequentially along the airflow direction.

[0020] A multi-fan DC micro-wind tunnel includes a power section, a contraction section, a rectification section, a test section, and an exhaust diffusion section that are connected sequentially along the airflow direction. The rectification section is equipped with a honeycomb device, and the test section includes a turntable.

[0021] The cell is selected from regular hexagonal cell units, with a side-to-side distance of 16mm and a unit length of 220mm.

[0022] The power section adopts a high-performance, low-noise axial flow fan, which is mainly composed of a housing, blades, hub and shaft system, motor and its support, anti-rotation plate, flow guide support plate, fairing, etc.

[0023] The turntable has a diameter of 1.0m and a rotation angle of 0 to 360°.

[0024] The fans in the power section are arranged in a 20×20 square array.

[0025] The exhaust diffuser section is made of Q235 material.

[0026] The specific working principle is as follows: Power section 1 is equipped with high-performance, low-noise axial fans arranged in a 20×20 square array. These fans serve as the power source for the wind tunnel, continuously replenishing energy to the airflow and ensuring it flows at a constant speed. The contraction section 2, located between power section 1 and rectifying section 3, is a contracting duct that uniformly accelerates the airflow, preventing separation on the tunnel walls. The airflow at the outlet of contraction section 2 must be uniform, straight, and stable; therefore, it should not be too long. A suitable length reduces wind tunnel construction costs and energy loss. Rectifying section 3 is a pipe of equal diameter, connected downstream to test section 4. A honeycomb filter 31 is installed in stabilizing section 3. After passing through the honeycomb filter 31, the airflow gradually stabilizes and attenuates residual small vortices, maintaining uniform and stable airflow. The working area of ​​test section 4 is constructed of transparent acrylic plastic, allowing clear observation of the model. Appropriate template connection points are provided on the side walls and top of the working section. A turntable 41 is installed inside test section 4. Exhaust diffuser section 5 is a diffuser duct that allows the airflow to diffuse evenly. Exhaust diffuser section 5 is installed downstream of test section 4.

[0027] like Figure 1 As shown, honeycomb cells 31 are sequentially arranged along the airflow direction within the rectifying section 3. These honeycomb cells 31 guide and divide large airflow vortices, which helps to accelerate vortex attenuation. The cross-sectional shape of the honeycomb cells on the honeycomb cells 31 can be selected from one of the following: circular, rectangular, or hexagonal. Of course, other shapes can also be chosen. In specific implementations, a regular hexagonal cross-sectional shape for the honeycomb cells is optimal.

[0028] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0029] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A multi-fan DC micro-wind tunnel, characterized in that, It includes a power section, a contraction section, a rectification section, a test section, and an exhaust diffusion section that are connected sequentially along the airflow direction. The rectification section is equipped with a honeycomb device, and the test section includes a turntable. The fans in the power section are arranged in a 20×20 square array.

2. The multi-fan DC micro-wind tunnel according to claim 1, characterized in that, The cell is selected from regular hexagonal cell units, with a side-to-side distance of 16mm and a unit length of 220mm.

3. The multi-fan DC micro-wind tunnel according to claim 1, characterized in that, The power section adopts a high-performance, low-noise axial flow fan, which mainly consists of a housing, blades, hub and shaft system, motor and its support, anti-rotation plate, flow guide support plate, and fairing.

4. The multi-fan DC micro-wind tunnel according to claim 1, characterized in that, The turntable has a diameter of 1.0m and a rotation angle of 0 to 360°.

5. The multi-fan DC micro-wind tunnel according to claim 1, characterized in that, The exhaust diffuser section is made of Q235 material.

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