A metering wind tunnel for testing an anemometer

Abstract

The utility model discloses a kind of measurement wind tunnels for anemometer test, including base and wind tunnel mechanism, the top of the base is fixedly installed with preliminary support mechanism, the inlet one end of the wind tunnel mechanism is provided with quick-release honeycomb mechanism for balancing wind force, the outlet one end of the wind tunnel mechanism is provided with wind-driven mechanism for providing wind force source, two groups of position locking mechanism for locking the position of wind tunnel mechanism are provided on the base.The wind-driven mechanism of the utility model is set in the inside of wind tunnel mechanism, so it can provide stable wind force for test, then the quick-release honeycomb mechanism set in the inlet position of wind tunnel mechanism can stabilize flow to wind force, and it does not need to use bolt installation when installing, and wind tunnel mechanism can be preliminarily limited using preliminary support mechanism when installing, then the position locking mechanism set subsequently can be cooperated with preliminary support mechanism to complete the position locking of wind tunnel mechanism.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a metering wind tunnel for anemometer testing. Background Technology

[0002] A metrological wind tunnel for anemometer testing is a precision device specifically designed for calibrating and testing wind speed measuring instruments such as anemometers. It provides a traceable, standardized environment for anemometers by generating a known, stable, and uniform airflow field, allowing for the evaluation of key performance indicators such as measurement accuracy, linearity, and repeatability.

[0003] When using existing metering wind tunnels, a stable wind force is required, and a honeycomb structure is needed to rectify the gas flow to ensure stability. However, during long-term motion testing, a large amount of dust and impurities may accumulate in the honeycomb structure, affecting the normal operation of the entire device. Furthermore, the installation of such small wind tunnels requires a large number of bolts and screws, making disassembly and maintenance difficult in case of damage. Therefore, we propose a metering wind tunnel for anemometer testing. Utility Model Content

[0004] The purpose of this invention is to provide a metrological wind tunnel for anemometer testing, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metering wind tunnel for testing an anemometer, comprising a base and a wind tunnel mechanism for testing anemometers, wherein a preliminary support mechanism is fixedly installed on the top of the base to support and initially limit the position of the wind tunnel mechanism, a quick-release honeycomb mechanism for balancing wind force is provided at the inlet end of the wind tunnel mechanism, a wind-driven mechanism for providing wind force source is provided at the outlet end of the wind tunnel mechanism, and two sets of position locking mechanisms for locking the position of the wind tunnel mechanism are provided on the base.

[0006] Furthermore, the wind tunnel mechanism includes an object carrying frame, a contraction section, an inlet section, a diffuser section, and a fan section. One end of the wind tunnel mechanism is fixedly connected to the contraction section, the other end of the contraction section is fixedly connected to the inlet section for air intake, and the other end of the wind tunnel mechanism is fixedly connected to the diffuser section and the fan section.

[0007] Furthermore, the preliminary support mechanism includes a support frame, a fixing block, support balls, and a reinforcing ring. Reinforcing rings are fixedly connected to the outside of both the inlet section and the fan section. A support frame that fits against the bottom of the reinforcing ring is fixedly connected to the top of the base. Multiple sets of fixing blocks are fixedly installed on the top of the base. Support balls that contact the bottom of the wind tunnel mechanism are rotatably connected to the top of the fixing blocks.

[0008] Furthermore, the wind-driven mechanism includes a fixed frame, a drive fan, and fan blades. The drive fan is fixedly installed inside the fan section via the fixed frame, and the fan blades are fixedly connected to the output end of the drive fan.

[0009] Furthermore, the quick-release honeycomb mechanism includes a pad, a rotating shaft, a locking piece, a connecting piece, a locking groove, and a honeycomb body. The pad is fixedly installed inside the inlet section. A rubber sealing gasket is fixedly installed on one side of the pad. Two sets of rotating shafts are fixedly installed on one side of the pad. An elliptical locking piece is rotatably installed at one end of the rotating shaft. A locking groove is fixedly installed on the inner wall of the connecting piece. An elliptical locking groove is opened on the connecting piece at the position corresponding to the locking piece.

[0010] Furthermore, the position locking mechanism includes a threaded rod, a threaded sleeve, a drive motor, a connecting frame, a positioning groove, and a positioning rod. The threaded rod is rotatably connected to the base, and the threaded sleeve is threadedly connected to the outside of the threaded rod. The drive motor is fixedly installed on one side of the base, and the output end of the drive motor is fixedly connected to the threaded rod. The connecting frame is fixedly connected to the top of the threaded sleeve. A positioning groove is provided on the outer side of the reinforcing ring, and a positioning rod inserted into the positioning groove is fixedly connected to one side of the connecting frame.

[0011] Compared with the prior art, the present invention has the following advantages: The wind-driven mechanism of the present invention is set inside the wind tunnel mechanism, which can provide stable wind for testing. The quick-release honeycomb mechanism set at the entrance of the wind tunnel mechanism can stabilize the wind flow and can be quickly disassembled and maintained without the need for bolt installation. During the installation of the wind tunnel mechanism, the initial support mechanism can be used for initial positioning, which can facilitate the adjustment of the position of the wind tunnel mechanism. The subsequent position locking mechanism can cooperate with the initial support mechanism to complete the position locking of the wind tunnel mechanism. Attached Figure Description

[0012] Figure 1 This is a first perspective structural diagram of the present invention;

[0013] Figure 2 This is a second perspective view of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the third perspective structure of the present invention;

[0015] Figure 4 This is an enlarged schematic diagram of structure A of this utility model.

[0016] In the diagram: 1. Base; 2. Initial support mechanism; 3. Wind tunnel mechanism; 4. Wind-driven mechanism; 5. Quick-release honeycomb mechanism; 6. Position locking mechanism; 7. Support frame; 8. Fixing block; 9. Support ball bearing; 10. Reinforcing ring; 11. Item carrying frame; 12. Contraction section; 13. Inlet section; 14. Diffusion section; 15. Fan section; 16. Fixing frame; 17. Drive fan; 18. Fan blade; 19. Pad; 20. Rubber sealing gasket; 21. Rotating shaft; 22. Locking piece; 23. Connecting piece; 24. Locking groove; 25. Honeycomb unit body; 26. Threaded rod; 27. Threaded sleeve; 28. Drive motor; 29. ​​Connecting frame; 30. Positioning groove; 31. Positioning rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model provides a technical solution: a metering wind tunnel for testing an anemometer, including a base 1 and a wind tunnel mechanism 3 for testing anemometers. A preliminary support mechanism 2 is fixedly installed on the top of the base 1 to support and initially limit the position of the wind tunnel mechanism 3. A quick-release honeycomb mechanism 5 for balancing wind force is provided at the inlet end of the wind tunnel mechanism 3, and a wind-driven mechanism 4 for providing wind force is provided at the outlet end of the wind tunnel mechanism 3. Two sets of position locking mechanisms 6 for locking the position of the wind tunnel mechanism 3 are provided on the base 1.

[0019] The wind-driven mechanism 4 is located inside the wind tunnel mechanism 3, which provides stable wind for testing. The quick-release honeycomb mechanism 5 at the entrance of the wind tunnel mechanism 3 can stabilize the wind flow and can be quickly disassembled and maintained without the need for bolts. During the installation of the wind tunnel mechanism 3, the initial support mechanism 2 can be used for initial positioning, which can facilitate the adjustment of the position of the wind tunnel mechanism 3. The position locking mechanism 6 can cooperate with the initial support mechanism 2 to lock the position of the wind tunnel mechanism 3.

[0020] Please see Figure 1 The wind tunnel mechanism 3 includes an object carrying frame 11, a contraction section 12, an inlet section 13, a diffuser section 14, and a fan section 15. One end of the wind tunnel mechanism 3 is fixedly connected to the contraction section 12, and the other end of the contraction section 12 is fixedly connected to the inlet section 13 for air intake. The other end of the wind tunnel mechanism 3 is fixedly connected to the diffuser section 14 and the fan section 15.

[0021] The anemometer to be tested is placed inside the item carrying frame 11. Then the wind drive mechanism 4 operates to provide wind power in the fan section 15. The gas then enters through the inlet section 13 and accelerates through the contraction section 12. After testing, the gas can pass through the diffuser section 14 to reduce the gas speed and then be slowly discharged through the fan section 15.

[0022] Please see Figures 1-3 The wind-driven mechanism 4 includes a fixed frame 16, a drive fan 17 and a fan blade 18. The drive fan 17 is fixedly installed inside the fan section 15 through the fixed frame 16, and the output end of the drive fan 17 is fixedly connected to the fan blade 18.

[0023] When testing is required, the drive fan 17 drives the fan blades 18 to rotate, so that the rotating fan blades 18 can provide the testing wind power for the entire device.

[0024] Please see Figure 1 The initial support mechanism 2 includes a support frame 7, a fixing block 8, a support ball 9, and a reinforcing ring 10. The inlet section 13 and the fan section 15 are both fixedly connected to the outside of the reinforcing ring 10. The top of the base 1 is fixedly connected to the support frame 7, which fits against the bottom of the reinforcing ring 10. Multiple sets of fixing blocks 8 are fixedly installed on the top of the base 1. The top of the fixing block 8 is rotatably connected to the support ball 9, which contacts the bottom of the wind tunnel mechanism 3.

[0025] During the installation of the wind tunnel mechanism 3, the reinforcing rings 10 set on the inlet section 13 and the fan section 15 can be attached to the external initial support limit of the support frame 7. Then, when it is necessary to adjust the position of the wind tunnel mechanism 3, the object carrying frame 11 is pushed, so that the entire device can be guided by the support ball 9, which facilitates the adjustment of the position of the wind tunnel mechanism 3.

[0026] Please see Figure 1 The quick-release honeycomb mechanism 5 includes a pad 19, a rotating shaft 21, a locking piece 22, a connecting piece 23, a locking groove 24, and a honeycomb body 25. The pad 19 is fixedly installed inside the inlet section 13. A rubber sealing gasket 20 is fixedly installed on one side of the pad 19. Two sets of rotating shafts 21 are fixedly installed on one side of the pad 19. An elliptical locking piece 22 is rotatably installed at one end of the rotating shaft 21. A locking groove 24 is fixedly installed on the inner wall of the connecting piece 23. An elliptical locking groove 24 is opened on the connecting piece 23 at the position corresponding to the locking piece 22.

[0027] During the installation of the cell unit body 25, one side of the connecting piece 23 contacts and adheres to the rubber sealing gasket 20. At this time, the locking piece 22 and the locking groove 24 are staggered. When it is necessary to disassemble the cell unit body 25, the locking piece 22 and the locking groove 24 are aligned, and then the connecting piece 23 and the cell unit body 25 can be pulled off, which facilitates the maintenance and cleaning of the cell unit body 25.

[0028] Please see Figures 1-4 The position locking mechanism 6 includes a threaded rod 26, a threaded sleeve 27, a drive motor 28, a connecting frame 29, a positioning groove 30, and a positioning rod 31. The threaded rod 26 is rotatably connected to the base 1, and the threaded sleeve 27 is threadedly connected to the outside of the threaded rod 26. The drive motor 28 is fixedly installed on one side of the base 1, and the output end of the drive motor 28 is fixedly connected to the threaded rod 26. The connecting frame 29 is fixedly connected to the top of the threaded sleeve 27. The positioning groove 30 is opened on the outer side of the reinforcing ring 10. The positioning rod 31, which is inserted into the positioning groove 30, is fixedly connected to one side of the connecting frame 29. One end of the positioning rod 31 is set as a hemispherical shape.

[0029] After the position of the wind tunnel mechanism 3 is adjusted, the drive motor 28 drives the threaded rod 26 to rotate, and then the threaded sleeve 27 rotates synchronously. This drives the connecting frame 29 and the positioning rod 31 to move to one side of the reinforcing ring 10, so that the positioning rod 31 can be inserted into the positioning groove 30, thereby completing the position locking of the wind tunnel mechanism 3. One end of the positioning rod 31 is set as a hemispherical shape, which makes it easy for the positioning rod 31 to be inserted into the positioning groove 30.

[0030] In use, firstly, the wind-driven mechanism 4 is installed inside the wind tunnel mechanism 3 to provide stable wind for testing. Then, the quick-release honeycomb mechanism 5 at the inlet of the wind tunnel mechanism 3 stabilizes the wind flow and allows for quick disassembly and maintenance without the need for bolts. During installation, the initial support mechanism 2 provides initial positioning, facilitating easy adjustment of the wind tunnel mechanism 3's position. The subsequent position locking mechanism 6 works in conjunction with the initial support mechanism 2 to lock the position of the wind tunnel mechanism 3. The anemometer to be tested is placed inside the material carrying frame 11. Then, the wind-driven mechanism 4 operates, providing wind in the fan section 15. Gas then enters through the inlet section 13 and accelerates through the contraction section 12. After testing, the gas passes through the diffuser section 14 to reduce its velocity and is slowly discharged through the fan section 15. When testing is required, the drive fan 17 rotates the fan blades 18, providing the testing wind for the entire device. During the installation of the wind tunnel mechanism 3, the inlet section 1... The reinforcing ring 10 installed on the wind turbine section 3 and the fan section 15 can be initially supported and limited by the external support frame 7. Then, when the position of the wind tunnel mechanism 3 needs to be adjusted, the carrying frame 11 is pushed, allowing the entire device to be guided by the support ball bearings 9, facilitating the adjustment of the wind tunnel mechanism 3. During the installation of the honeycomb unit 25, one side of the connecting piece 23 contacts and adheres to the rubber sealing gasket 20. At this time, the locking piece 22 and the locking groove 24 are staggered. Subsequently, when the honeycomb unit 25 needs to be disassembled, the locking piece 22 and the locking groove 24 are aligned. Then the connecting piece 23 and the honeycomb unit body 25 can be pulled off to facilitate maintenance and cleaning of the honeycomb unit body 25. After the position of the wind tunnel mechanism 3 is adjusted, the drive motor 28 drives the threaded rod 26 to rotate, and then the threaded sleeve 27 rotates synchronously. This drives the connecting frame 29 and the positioning rod 31 to move to one side of the reinforcing ring 10, so that the positioning rod 31 can be inserted into the inside of the positioning groove 30, thereby completing the position locking of the wind tunnel mechanism 3. One end of the positioning rod 31 is set as a hemispherical shape, which makes it easy for the positioning rod 31 to be inserted into the inside of the positioning groove 30.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metrological wind tunnel for testing an anemometer, comprising a base (1) and a wind tunnel mechanism (3) for testing an anemometer, characterized in that: The base (1) is fixedly installed with a preliminary support mechanism (2) for bearing the wind tunnel mechanism (3) and performing preliminary positioning. The wind tunnel mechanism (3) has a quick-release honeycomb mechanism (5) for balancing wind force at one end of its inlet and a wind-driven mechanism (4) for providing wind force at one end of its outlet. The base (1) is provided with two sets of position locking mechanisms (6) for locking the position of the wind tunnel mechanism (3).

2. The metering wind tunnel for anemometer testing according to claim 1, characterized in that: The wind tunnel mechanism (3) includes an item carrying frame (11), a contraction section (12), an inlet section (13), a diffuser section (14), and a fan section (15). One end of the wind tunnel mechanism (3) is fixedly connected to the contraction section (12), and the other end of the contraction section (12) is fixedly connected to the inlet section (13) for air intake. The other end of the wind tunnel mechanism (3) is fixedly connected to the diffuser section (14) and the fan section (15).

3. The metering wind tunnel for anemometer testing according to claim 2, characterized in that: The preliminary support mechanism (2) includes a support frame (7), a fixing block (8), a support ball (9) and a reinforcing ring (10). The inlet section (13) and the fan section (15) are both fixedly connected to the outside of the reinforcing ring (10). The top of the base (1) is fixedly connected to the support frame (7) which fits against the bottom of the reinforcing ring (10). The top of the base (1) is fixedly installed with multiple sets of fixing blocks (8). The top of the fixing block (8) is rotatably connected to the support ball (9) which contacts the bottom of the wind tunnel mechanism (3).

4. The metering wind tunnel for anemometer testing according to claim 3, characterized in that: The wind-driven mechanism (4) includes a fixed frame (16), a drive fan (17) and a fan blade (18). The drive fan (17) is fixedly installed inside the fan section (15) through the fixed frame (16), and the fan blade (18) is fixedly connected to the output end of the drive fan (17).

5. A metering wind tunnel for anemometer testing according to claim 4, characterized in that: The quick-release honeycomb mechanism (5) includes a pad (19), a rotating shaft (21), a locking piece (22), a connecting piece (23), a locking groove (24), and a honeycomb body (25). The pad (19) is fixedly installed inside the inlet section (13). A rubber sealing gasket (20) is fixedly installed on one side of the pad (19). Two sets of rotating shafts (21) are fixedly installed on one side of the pad (19). An elliptical locking piece (22) is rotatably installed at one end of the rotating shaft (21). A locking groove (24) is fixedly installed on the inner wall of the connecting piece (23). An elliptical locking groove (24) is opened on the connecting piece (23) at the position corresponding to the locking piece (22).

6. A metrological wind tunnel for anemometer testing according to claim 5, characterized in that: The position locking mechanism (6) includes a threaded rod (26), a threaded sleeve (27), a drive motor (28), a connecting frame (29), a positioning groove (30), and a positioning rod (31). The threaded rod (26) is rotatably connected to the base (1). The threaded sleeve (27) is threadedly connected to the outside of the threaded rod (26). The drive motor (28) is fixedly installed on one side of the base (1). The output end of the drive motor (28) is fixedly connected to the threaded rod (26). The connecting frame (29) is fixedly connected to the top of the threaded sleeve (27). The positioning groove (30) is opened on the outside of the reinforcing ring (10). The positioning rod (31) inserted into the positioning groove (30) is fixedly connected to one side of the connecting frame (29).

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