Upright clamping device for anemograph calibration in wind tunnel

Abstract

The utility model relates to a vertical clamping device for calibrating an anemograph in a wind tunnel. The device comprises a sealing device, an anemograph mounting cylinder, an angle turntable and a fastening device, the middle part of the anemograph mounting cylinder is arranged in an opening in the side wall of the wind tunnel in a penetrating manner, and one end in the wind tunnel is connected with a detected anemograph; the sealing device comprises a wind tunnel inner sealing disc, a sealing rubber ring and a wind tunnel outer sealing disc; the angle rotating disc comprises a fixed disc, a movable disc, an adjusting nut and a fixing screw. The fastening device comprises a fastening base plate, an elastic fastening ring and a fastening cover. Compared with the prior art, the upright clamping device for calibrating the anemograph in the wind tunnel has the beneficial effects that the installation stability of the anemograph in the wind tunnel can be ensured through rigid connection, and the upright clamping device has the outstanding advantages of simple structure, stable work, small size, convenience in installation, strong applicability and the like, so that the upright clamping device has good popularization and application values.

Description

Technical Field

[0001] This utility model belongs to the technical field of anemometer calibration devices, and specifically relates to an upright clamping device for anemometer calibration in a wind tunnel. Background Technology

[0002] Anemometers, as key instruments for measuring air velocity, have wide applications in many fields. In the power industry, accurate wind speed measurement is crucial for the efficient operation and safety of wind farms, as wind speed data directly affects the prediction of power generation and the regulation of wind turbines. In the steel industry, anemometers can be used to monitor ventilation in factory buildings, ensuring suitable air quality and temperature in the production environment, protecting worker health and ensuring normal equipment operation. In the petrochemical industry, accurate wind speed measurement helps control gas flow and diffusion in chemical reaction processes, ensuring production safety and product quality. In the energy conservation field, monitoring wind speed inside and outside buildings can optimize ventilation system design, achieving energy conservation and emission reduction. In agriculture, wind speed information is of great significance for regulating crop growth environment, controlling pests and diseases, and ensuring the rational operation of irrigation systems. The meteorological industry relies heavily on anemometers to provide basic data for weather forecasting and climate research.

[0003] To ensure the accuracy of wind speed data measured by anemometers, they need to be calibrated regularly, and wind tunnels are commonly used equipment for anemometer calibration. Currently, the operation of calibrating anemometers in wind tunnels presents the problem of inconvenient anemometer mounting. Chinese Patent Application No. 202322066410.3 discloses an anemometer calibration device that achieves simple sealing and fixing through mechanical clamping, improving installation efficiency and compatibility. However, its structural rigidity is insufficient and maintenance costs are high in high-speed wind tunnels. Chinese Patent Application No. 201721051950.2 discloses a horizontal anemometer bracket for collecting wind speed in wind tunnels and capable of vertical adjustment and multi-point observation. It can perform multi-point synchronous measurement, has high adjustment accuracy, and adapts to complex environments; however, its structure is complex, installation is time-consuming, and it significantly interferes with the flow field. Chinese Patent Application No. 202221140044.0 discloses an anemometer calibration device that adopts an integrated design of wind tunnel and mounting cylinder, achieving sealing through the elastic fit between the sealing cover and the probe. The device is equipped with multiple pressure sensors to monitor the airflow distribution within the wind tunnel in real time. However, wind tunnels and mounting cylinders are relatively large, requiring significant space at the testing site, and only support specific types of probes, necessitating customized adapters for compatibility with other specifications. Therefore, designing a simple, easy-to-install, adaptable, and precisely adjustable upright clamping device for various anemometer specifications is of significant practical importance. Summary of the Invention

[0004] In order to solve the above problems, the purpose of this utility model is to provide an upright clamping device for calibrating anemometers in wind tunnels.

[0005] To achieve the above objectives, the present invention provides an upright clamping device for calibrating an anemometer in a wind tunnel, comprising a sealing device, an anemometer mounting cylinder, an angle turntable, and a fastening device. The anemometer mounting cylinder has its center portion passing through an opening in the side wall of the wind tunnel, with one end inside the wind tunnel used to connect to the anemometer under test. The sealing device includes an inner sealing disc, a sealing rubber ring, and an outer sealing disc. The inner sealing disc is annular and connected to the inner surface of the wind tunnel, with its central hole fitted over the outer surface of the anemometer mounting cylinder. The sealing rubber ring is located on the outer surface of the wind tunnel, with its central hole fitted over the outer surface of the anemometer mounting cylinder. The outer sealing disc is annular and located outside the sealing rubber ring, with its central hole fitted over the outer surface of the anemometer mounting cylinder. It is fixed to the wind tunnel with screws, thereby pressing the sealing rubber ring against the opening in the wind tunnel and simultaneously cooperating with the inner sealing disc to prevent air leakage.

[0006] The angle turntable includes a fixed plate, a moving plate, an adjusting nut, and a fixing screw. The fixed plate is annular, with its central hole fitted onto the anemometer mounting cylinder at the location outside the wind tunnel outer sealing plate of the sealing device, and one side connected to the wind tunnel outer sealing plate. The moving plate is annular, with its central hole fixed onto the anemometer mounting cylinder at the location outside the fixed plate, and closely attached to the other side of the fixed plate. The adjusting nut is installed on the outer circumference of the moving plate and is used to adjust the rotation angle of the moving plate. The fixing screw is used to lock the relative position between the moving plate and the fixed plate, thereby fixing the moving plate at the current angle.

[0007] The fastening device includes a fastening base, an elastic fastening ring, and a fastening cover. The fastening base is annular, with its central hole fitted onto the anemometer mounting cylinder at the outer side of the rotating disc of the angle turntable, and is fixed to the rotating disc by screws. External threads are formed on the outer circumference of the outer portion. The elastic fastening ring is a frustum-shaped structure with a central hole, fitted onto the anemometer mounting cylinder, with its smaller diameter end inserted into the space between the central hole of the fastening base and the anemometer mounting cylinder. The central threaded hole on the fastening cover fits onto the outer side of the larger diameter end of the elastic fastening ring, and the elastic fastening ring is firmly fixed to the anemometer mounting cylinder by the engagement of the central threaded hole with the external thread on the fastening base, preventing movement of the anemometer mounting cylinder.

[0008] The elastic fastening ring adopts a hollow design.

[0009] The end face of the wind tunnel's outer sealing plate near the wind tunnel is an arc surface that fits into the outer circumference of the wind tunnel.

[0010] The anemometer under test is connected to the anemometer mounting cylinder by a set screw.

[0011] The upright clamping device for calibrating anemometers in wind tunnels provided by this utility model has the following beneficial effects: through rigid connection, it can ensure the installation stability of anemometers in wind tunnels. It has outstanding advantages such as simple structure, stable operation, small size, easy installation, and strong applicability, and therefore has good promotion and application value. Attached Figure Description

[0012] Figure 1 This invention provides a structural diagram of an upright clamping device for calibrating anemometers in a wind tunnel. Detailed Implementation

[0013] The upright clamping device for calibrating anemometers in wind tunnels provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 As shown, the upright clamping device for calibrating an anemometer in a wind tunnel provided by this utility model includes a sealing device 200, an anemometer mounting cylinder 400, an angle turntable 500, and a fastening device 600; wherein, the middle part of the anemometer mounting cylinder 400 is disposed through an opening on the side wall of the wind tunnel 300, and one end located inside the wind tunnel 300 is used to connect to the anemometer 100 under test; the sealing device 200 includes an inner sealing plate 2001, a sealing rubber ring 2002, and an outer sealing plate 2003; the inner sealing plate 2001 is annular and is connected to the wind tunnel. The inner surface of the wind tunnel 300 is connected, and the center hole is fitted onto the outside of the anemometer mounting cylinder 400; the sealing rubber ring 2002 is provided on the outer surface of the wind tunnel 300, and the center hole is fitted onto the outside of the anemometer mounting cylinder 400; the wind tunnel outer sealing plate 2003 is annular, provided on the outside of the sealing rubber ring 2002, and the center hole is fitted onto the outside of the anemometer mounting cylinder 400, and is fixed to the wind tunnel 300 by screws, thereby pressing the sealing rubber ring 2002 against the opening of the wind tunnel 300, and at the same time cooperating with the wind tunnel inner sealing plate 2001 to prevent air leakage;

[0015] The angle turntable 500 includes a fixed plate 5001, a movable plate 5002, an adjusting nut 5003, and a fixing screw 5004. The fixed plate 5001 is annular, with its central hole fitted onto the anemometer mounting cylinder 400 at the location outside the wind tunnel outer sealing plate 2003 of the sealing device 200, and one side connected to the wind tunnel outer sealing plate 5003. The movable plate 5002 is annular, with its central hole fixed onto the anemometer mounting cylinder 400 at the location outside the fixed plate 5001, and closely attached to the other side of the fixed plate 5001. The adjusting nut 5003 is installed on the outer circumferential surface of the movable plate 5002 for adjusting the rotation angle of the movable plate 5002. The fixing screw 5004 is used to lock the relative position between the movable plate 5002 and the fixed plate 5001, thereby fixing the movable plate 5002 at the current angle.

[0016] The fastening device 600 includes a fastening base 6001, an elastic fastening ring 6002, and a fastening cover 6003. The fastening base 6001 is annular, with its central hole fitted onto the portion of the anemometer mounting cylinder 400 located outside the movable disk 5002 of the angle turntable 500, and is fixed to the movable disk 5002 by screws. External threads are formed on the outer circumference of the outer portion. The elastic fastening ring 6002 is a frustum-shaped structure with a central hole, fitted onto the anemometer mounting cylinder 400, with its smaller diameter end inserted into the space between the central hole of the fastening base 6001 and the anemometer mounting cylinder 400. The central threaded hole on the fastening cover 6003 fits onto the outer side of the larger diameter end of the elastic fastening ring 6002, and the elastic fastening ring 6002 is firmly fixed to the anemometer mounting cylinder 400 by the engagement of the central threaded hole with the external thread on the fastening base 6001, preventing movement of the anemometer mounting cylinder 400.

[0017] The elastic fastening ring 6002 adopts a hollow design.

[0018] The end face of the wind tunnel outer sealing plate 2003 near the wind tunnel 300 is an arc surface that fits against the outer circumferential surface of the wind tunnel 300.

[0019] The anemometer under test 100 is connected to the anemometer mounting cylinder 400 by a set screw, which facilitates the fixing and disassembly of the anemometer under test 100.

[0020] The method of using the upright clamping device for calibrating anemometers in a wind tunnel provided by this utility model is described as follows: Before calibrating the anemometer, the operator first tightens the fixing screws 5004 on the angle turntable 500, adjusts the length of the anemometer mounting cylinder 400 exposed in the wind tunnel 300 to a suitable length, and then rotates the fastening cover 5003. Under the pressing action of the fastening base 6001 and the fastening cover 6003, the inner diameter of the elastic fastening ring 6002 decreases, thereby firmly fixing and locking the anemometer mounting cylinder 400. Then, the anemometer 100 to be measured is installed and fixed on the end of the anemometer mounting cylinder 400 located inside the wind tunnel 300, and then the calibration work begins. During the calibration process, if it is necessary to rotate the anemometer 100 to be measured by a certain angle, loosen the fixing screw 5004 on the angle turntable 500, and then use the adjusting nut 5003 to rotate the moving plate 5002, the anemometer mounting cylinder 400, the fastening device 600 and the anemometer 100 to be measured, adjust them to the appropriate position, and then tighten the fixing screw 5004 to continue the experiment.

Claims

1. A vertical clamping device for calibrating anemometers in a wind tunnel, characterized in that: The upright clamping device for calibrating anemometers in a wind tunnel includes a sealing device (200), an anemometer mounting cylinder (400), an angle turntable (500), and a fastening device (600); wherein, the anemometer mounting cylinder (400) is disposed in the middle through an opening on the side wall of the wind tunnel (300), and one end located inside the wind tunnel (300) is used to connect to the anemometer under test (100); the sealing device (200) includes an inner sealing disc (2001), a sealing rubber ring (2002), and an outer sealing disc (2003); the inner sealing disc (2001) is annular and is connected to the wind tunnel (300) by an angle turntable (500). The inner surface of the wind tunnel (300) is connected, and the center hole is fitted on the outside of the anemometer mounting cylinder (400); the sealing rubber ring (2002) is provided on the outer surface of the wind tunnel (300), and the center hole is fitted on the outside of the anemometer mounting cylinder (400); the wind tunnel outer sealing plate (2003) is annular, provided on the outside of the sealing rubber ring (2002), and the center hole is fitted on the outside of the anemometer mounting cylinder (400), and is fixed to the wind tunnel (300) by screws, thereby pressing the sealing rubber ring (2002) at the opening of the wind tunnel (300), and cooperating with the wind tunnel inner sealing plate (2001) to prevent air leakage; The angle turntable (500) includes a fixed plate (5001), a movable plate (5002), an adjusting nut (5003), and a fixing screw (5004); the fixed plate (5001) is annular, with its central hole fitted onto the anemometer mounting cylinder (400) at the location outside the wind tunnel outer sealing plate (2003) of the sealing device (200), and one side connected to the wind tunnel outer sealing plate (2003); the movable plate (5002) is annular, with its central hole fixed. The anemometer mounting cylinder (400) is located on the outer side of the fixed plate (5001) and is in close contact with the other side of the fixed plate (5001); the adjusting nut (5003) is installed on the outer circumferential surface of the moving plate (5002) and is used to adjust the rotation angle of the moving plate (5002); the fixing screw (5004) is used to lock the relative position between the moving plate (5002) and the fixed plate (5001), thereby fixing the moving plate (5002) at the current angle; The fastening device (600) includes a fastening base (6001), an elastic fastening ring (6002), and a fastening cover (6003). The fastening base (6001) is annular, with its central hole fitted onto the portion of the anemometer mounting cylinder (400) located outside the movable disk (5002) of the angle turntable (500), and is fixed to the movable disk (5002) by screws. External threads are formed on the outer circumference of the outer portion. The elastic fastening ring (6002) is a frustum-shaped structure with a central hole, fitted onto... The anemometer mounting cylinder (400) is mounted on the anemometer, and the small-diameter end is inserted into the space between the center hole of the fastening base (6001) and the anemometer mounting cylinder (400). The center threaded hole on the fastening cover (6003) is fitted onto the outer side of the large-diameter end of the elastic fastening ring (6002), and the elastic fastening ring (6002) is firmly fixed on the anemometer mounting cylinder (400) by means of the center threaded hole cooperating with the external thread on the fastening base (6001) to prevent the anemometer mounting cylinder (400) from moving.

2. The upright clamping device for calibrating anemometers in a wind tunnel according to claim 1, characterized in that: The elastic fastening ring (6002) adopts a hollow design.

3. The upright clamping device for calibrating anemometers in a wind tunnel according to claim 1, characterized in that: The end face of the wind tunnel outer sealing plate (2003) near the wind tunnel (300) is an arc surface that fits against the outer circumference of the wind tunnel (300).

4. The upright clamping device for calibrating anemometers in a wind tunnel according to claim 1, characterized in that: The anemometer under test (100) is connected to the anemometer mounting cylinder (400) by a set screw.

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