Wind tunnel

Abstract

The utility model relates to the technical field of test wind tunnels, in particular to an accurate and visual wind tunnel, which comprises blast equipment and a wind guide pipe, the wind guide pipe comprises a stable section, a contraction section and an experiment section, and the wind tunnel is characterized by further comprising a wind speed measuring device, the wind speed measuring device is separately arranged outside a wind tunnel main body, and the wind speed measuring device is connected with the wind tunnel main body. The wind speed measuring device comprises a wind meter and an auxiliary support, the auxiliary support comprises a transverse rod and vertical rods, and the two ends of the transverse rod are supported by the vertical rods. The wind tunnel provided by the utility model is low in cost, accurate in speed measurement, simple in structure, convenient to mount and dismount, and capable of realizing real-time visual monitoring and meeting various experiment requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to test wind tunnel technical field, specifically, relate to a low cost, speed measurement accurate, simple structure, convenient to install dismount, can also real -time visual monitoring's wind tunnel, can satisfy various experimental demand. BACKGROUND

[0002] The wind tunnel is a kind of pipe-like experimental equipment for simulating the flow of gas around aircraft or entity by artificially generating and controlling airflow, and can measure the effect of airflow on entity and observe physical phenomena, and it is one of the most commonly used and effective tools for aerodynamic experiment.In undergraduate teaching, laboratory usually uses fan or other types of wind source equipment to generate airflow.These systems have poor controllability, high turbulence level and poor stability compared with professional wind tunnels.The traditional large wind tunnel is often too expensive and occupies a large area.A Chinese utility model patent with publication number CN201000391Y discloses a small wind tunnel experimental device for students, which is convenient and safe to use, simple to operate, can obtain different wind speeds, and can control the size of wind speed and volume.

[0003] However, the above-mentioned disclosed scheme has the following disadvantages: the obtained wind source has poor stability, the wind speed is not uniform, and the instability of the wind source will directly lead to the fluctuation of the wind speed, which will produce non-uniform airflow distribution.This non-uniform airflow distribution will interfere with the stress condition of the model, making the experimental results deviate from the true situation, thus leading to inaccurate experimental results.In addition, the above-mentioned invention does not provide a wind speed measurement module after construction. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of wind tunnel, including wind tunnel main body, the wind tunnel main body includes blower equipment and air guide pipe, the air guide pipe includes stable section, contraction section and experimental section, it is characterized by, still include wind speed measuring device, the wind speed measuring device is separately arranged in the wind tunnel main body, and with the air outlet of experimental section is opposite, the wind speed measuring device includes anemograph and auxiliary support, the auxiliary support includes cross bar and vertical rod, the cross bar both ends are supported by vertical rod.

[0005] The vertical rod is a hydraulic vertical rod, which can be adjusted in the vertical direction.

[0006] The vertical rod is a porous vertical rod, and the bolt passes through the opposite holes of the porous vertical rod and is locked with the cross bar.

[0007] The wind tunnel body further comprises a first base, a second base and a third base, the first base is arranged below the experiment section, the second base is arranged below the stable section, and the third base is arranged below the air blowing device, and the first base, the second base and the third base make the central axes of the experiment section, the stable section and the air blowing device at the same height.

[0008] Further, the cross rod passes through the wind measuring instrument, and the cross rod is in sliding connection with the wind measuring instrument.

[0009] Further, a linear motor is arranged on the cross rod, and the wind measuring instrument is driven to move horizontally by the linear motor.

[0010] Further, the wind speed measuring device selects a heat-sensitive high-precision anemometer.

[0011] Further, the wind measuring instrument comprises a probe, and the probe is bendable.

[0012] Further, the wind measuring instrument is internally provided with or externally connected with a data recording device, and the data recording device is in communication connection with the wind measuring instrument.

[0013] Further, the data recording device comprises a display component.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0015] The utility model relates to a kind of wind tunnels, low cost, speed measurement is accurate, it is convenient to install and disassemble, it can also be visualized speed measurement, satisfy multiple experimental needs. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the content of the utility model more easily be clearly understood, the utility model is further explained in detail below according to the specific embodiment of the utility model and in conjunction with the drawings.

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] Description of the Drawings: 1, air blowing device;2, stable section;3, contraction section;4, experiment section;5, wind speed measuring device;6, first base;7, second base;8, third base. DETAILED DESCRIPTION

[0019] The utility model is further explained below in conjunction with the drawings and specific embodiment, so that those skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0020] The wind tunnel of the utility model, including wind tunnel main part, wind tunnel main part includes air blowing equipment and air duct, air duct includes stable section, contraction section and experiment section, air blowing equipment and stable section, stable section and contraction section, contraction section and experiment section can be connected in proper order through bolt, thread, rivet, key or pin, so that air blowing equipment, stable section, contraction section and experiment section are connected in proper order and form a whole, so that the wind blown by air blowing equipment blows along the guidance of air duct. The wind tunnel further includes wind speed measuring device in addition to the wind tunnel main part, the wind speed measuring device is separately arranged outside the wind tunnel main part and opposite to the air outlet of the experiment section, and the wind speed measuring device includes anemograph and auxiliary support, and the anemograph is arranged on the auxiliary support.

[0021] In other embodiments of the utility model, the anemograph can be connected to the auxiliary support in various ways, including but not limited to adsorption, suspension or passing the auxiliary support through the anemograph, etc. The anemograph is arranged at a suitable position through the above-mentioned ways, so that the airflow guided by the air duct can be detected by the wind speed measuring device.

[0022] Specifically, a horizontal sliding shaft can be arranged on the horizontal rod of the auxiliary support, and the anemograph is slidably arranged on the horizontal rod, so that the position of the anemograph in the horizontal direction can be adjusted.

[0023] In addition, in another embodiment of the utility model, a linear motor can be arranged on the horizontal rod, and the anemograph is driven to move horizontally by the linear motor and can be moved in the horizontal direction to a suitable wind measuring position.

[0024] As mentioned above, the vertical rod of the auxiliary support can also be designed, and the vertical rod can be replaced by a hydraulic vertical rod. Because the hydraulic vertical rod can be adjusted in the vertical direction, the anemograph can also be adjusted up and down in the vertical direction.

[0025] Similarly, the horizontal rod of the auxiliary support can also be arranged as a perforated vertical rod, and the horizontal rod can be locked by passing through the opposite holes of the perforated vertical rod through bolts or pins, so as to adjust the height of the horizontal rod and the height of the anemograph.

[0026] In summary, through different designs of the horizontal rod and the vertical rod of the auxiliary support, the anemograph can be adjusted at any position on the plane of the auxiliary support to obtain a suitable wind measuring position.

[0027] In other embodiments of the utility model, the above-mentioned auxiliary support can also be a single vertical rod type support or a triangular support, which reduces the flexibility of setting the position of the anemograph, but the cost and installation difficulty are also reduced accordingly, which can be used as an alternative scheme of the utility model.

[0028] In order to improve the stability of the wind tunnel main body, the wind tunnel main body further comprises a first base, a second base and a third base, the first base is arranged below the experiment section, the second base is arranged below the stable section, and the third base is arranged below the air blowing device, and the first base, the second base and the third base make the central axes of the experiment section, the stable section and the air blowing device at the same height, the above-mentioned base comprises a horizontal plate and two vertical plates, the two vertical plates are arranged in parallel and vertically on the horizontal plate, one end of the two vertical plates can be connected with the horizontal plate through welding, and the other end can be arranged in a shape that is matched with the corresponding part of the base, so as to ensure the stability during support, the base and the air guide pipe can be welded and connected, so that the wind tunnel is stable and can meet the use requirements.

[0029] In other embodiments of the utility model, the above-mentioned base can also be composed of strip-shaped or tubular components to form a support structure, so that the wind tunnel is stable and can meet the use requirements.

[0030] In order to improve the ease of use of the wind tunnel, the wind measuring instrument can comprise a wind measuring probe, the probe can be made of metal, and the probe can be bent and deformed to adjust to a suitable wind measuring position.

[0031] According to the wind tunnel provided by the utility model, the wind speed measuring device of the wind tunnel can be built-in or externally connected with a data recording device. The built-in data recording device can synchronously transmit data to a receiving device in real time through wireless local area network technology, or can save data in a storage component of the data recording device for use. In addition, the data recording device can synchronously transmit data to a receiving device in real time through a data transmission medium such as a data line for use.

[0032] In addition, in order to facilitate real-time observation of data, the built-in or externally connected data recording device of the wind speed measuring device can further comprise a display component. The display component can be a low-cost, simple-structured and not-easily-damaged LED display, or can be an integrated circuit and a display comprising a data processing function. A suitable scheme can be selected according to specific conditions.

[0033] Obviously, the above-mentioned embodiments are only examples for clearly illustrating, and are not limitations on the embodiments. Other forms of changes or variations can be made by those skilled in the art on the basis of the above-mentioned description. All the embodiments do not need to be exhausted, and obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A wind tunnel comprising a wind tunnel body, the wind tunnel body comprising a blower device (1) and a wind guide tube, the wind guide tube comprising a settling section (2), a contraction section (3) and a test section (4), characterized in that, Further comprising a wind speed measuring device (5) which is separately arranged outside the wind tunnel body and opposite to the air outlet of the experiment section (4), the wind speed measuring device (5) comprising a wind meter and an auxiliary support, the auxiliary support comprising a horizontal rod and a vertical rod, the horizontal rod being supported by the vertical rod at both ends.

2. The wind tunnel of claim 1, wherein, The vertical rod is a hydraulic vertical rod which can be telescopic adjusted in vertical direction.

3. The wind tunnel of claim 1, wherein, The vertical rod is a porous vertical rod, and a bolt passes through opposite holes of the porous vertical rod and locks with the horizontal rod.

4. The wind tunnel of claim 1, wherein, The wind tunnel body further comprises a first base (6), a second base (7) and a third base (8), the first base (6) being arranged below the experiment section (4), the second base (7) being arranged below the stable section (2), and the third base (8) being arranged below the air blowing device (1), and the first base (6), the second base (7) and the third base (8) make the central axes of the experiment section, the stable section and the air blowing device at the same height.

5. The wind tunnel of claim 1, 2 or 3, wherein, The horizontal rod passes through the wind meter and is in sliding connection with the wind meter.

6. The wind tunnel of claim 1, 2 or 3, wherein, A linear motor is arranged on the horizontal rod, and the wind meter is driven to move horizontally by the linear motor.

7. The wind tunnel of claim 1, wherein, The wind speed measuring device (5) selects a heat-sensitive high-precision anemometer.

8. The wind tunnel of claim 1 or 7, wherein, The wind meter comprises a probe which can be bent and deformed.

9. The wind tunnel of claim 1, wherein, The wind meter is inbuilt or externally connected with a data recording device, and the data recording device is in communication connection with the wind meter.

10. The wind tunnel of claim 9, wherein, The data recording device comprises a display component.

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