A wind tunnel full-mode test section expansion angle adjustment structure

Abstract

This application discloses a wind tunnel full-scale test section expansion angle adjustment structure, including a frame and sidewalls. The sidewalls are movably mounted on the frame in the horizontal direction via a suspension support mechanism. An expansion angle adjustment mechanism for adjusting the horizontal position of the sidewalls is provided between the sidewalls and the frame, with at least two sets of expansion angle adjustment mechanisms arranged front and back. The beneficial effects of this application are: dynamic adaptation to multiple operating conditions and improved flow field control accuracy: by adjusting the expansion angle of the sidewalls, the deflection angle and distribution pattern of the airflow within the wind tunnel can be actively controlled, reducing local turbulent fluctuations and significantly improving flow field stability.

Description

Technical Field

[0001] This application belongs to the field of wind tunnel technology, specifically relating to a wind tunnel full-mode test section expansion angle adjustment structure. Background Technology

[0002] Wind tunnel panels are core components of the wind tunnel test section. Their design is based on aerodynamics, achieving a stable airflow environment through high-precision flow field control. The panels must possess high strength, corrosion resistance, and low turbulence characteristics to withstand high-speed airflow impacts and reduce flow field interference. Functionally, the panels must maintain the airtightness of the test section to prevent airflow leakage, while surface smoothing reduces turbulence, ensuring airflow uniformity meets experimental requirements for key parameters such as Mach number and Reynolds number. Furthermore, some panels integrate sensor interfaces or pipe channels for real-time monitoring of parameters such as model surface pressure and temperature, providing data support for aerodynamic performance analysis.

[0003] Traditional wind tunnel wall panels often use fixed connections, and their opening angle is not adjustable, making it difficult to adapt to the airflow angle requirements of different experiments. This often necessitates physical replacement or complex adjustments, increasing experimental costs and time. Furthermore, this fixed structure is prone to uneven sealing, and long-term stress concentration from airflow impacts can easily lead to fatigue cracks, affecting experimental accuracy and posing safety hazards. Summary of the Invention

[0004] The purpose of this application is to provide a wind tunnel full-model test section expansion angle adjustment structure, which solves the problem that the expansion angle of the existing wind tunnel sidewall is not adjustable.

[0005] The objective of this application is achieved through the following technical solution: A wind tunnel full-mode test section expansion angle adjustment structure includes a frame and a side wall panel. The side wall panel is movably mounted on the frame in the horizontal direction through a suspension support mechanism. An expansion angle adjustment mechanism for adjusting the horizontal position of the side wall panel is provided between the side wall panel and the frame. At least two sets of expansion angle adjustment mechanisms are arranged in the front and back directions.

[0006] Furthermore, an upper wall panel and a lower wall panel are fixed on the frame, and side wall panels are located on the left and right sides of the frame and between the upper wall panel and the lower wall panel.

[0007] Furthermore, the front end of the sidewall panel is an elastic plate.

[0008] Furthermore, the aforementioned suspension support mechanism has the motion functions of sliding in the X direction, sliding in the Y direction, and rotating along the vertical axis.

[0009] Furthermore, the suspension support mechanism includes an X-axis guide rail slider pair, a Y-axis guide rail slider pair, and a vertical axis rotary joint. The frame is connected to the X-axis guide rail slider pair, the X-axis guide rail slider pair is connected to the Y-axis guide rail slider pair, the Y-axis guide rail slider pair is connected to the vertical axis rotary joint, and the vertical axis rotary joint is connected to the side wall plate.

[0010] Furthermore, the frame is provided with an auxiliary support mechanism to support the horizontal movement of the side wall panels, and the side wall panels are provided with a fixed support mechanism that can be adjusted and locked onto the frame.

[0011] Furthermore, the auxiliary support mechanism is a radial joint bearing.

[0012] Furthermore, the fixed support mechanism is an L-shaped fixed support, one end of which is fixedly connected to the side wall plate, and the other end of which is fixed to the adjustable locking elongated hole of the frame by bolts.

[0013] Furthermore, the expansion angle adjustment mechanism includes a horizontal telescopic component and a lateral displacement compensation component. The frame is connected to the horizontal telescopic component, the horizontal telescopic component is connected to the lateral displacement compensation component, and the lateral displacement compensation component is connected to the side wall panel.

[0014] Furthermore, the horizontal telescopic component includes a servo motor, a reducer, and a lift. The servo motor is connected to the reducer, the reducer is connected to the lift, and the telescopic rod of the lift is connected to the lateral displacement compensation component.

[0015] Furthermore, the lateral displacement compensation component includes a push shaft, a displacement compensation slider, and a slide seat. The telescopic rod of the horizontal telescopic component is hinged to the displacement compensation slider through the push shaft. The displacement compensation slider is slidably disposed in the slide seat in the horizontal direction. The slide seat is connected to the side wall plate.

[0016] The beneficial effects of this application are: (1) Dynamically adapt to multiple working conditions and improve the accuracy of flow field control: By adjusting the opening angle of the side wall plate, the deflection angle and distribution pattern of the airflow in the wind tunnel can be actively controlled, reducing local turbulence pulsation and significantly improving the stability of the flow field.

[0017] (2) Enhance equipment reusability and reduce operation and maintenance costs: Traditional wind tunnel inner wall panels need to be customized and replaced for different working conditions, while this design achieves multi-parameter adjustment through a single structure, which is compatible with high-speed and low-speed experimental requirements. It can cover a variety of conventional wind tunnel testing scenarios and reduce redundant equipment configuration.

[0018] (3) Optimize aerodynamic noise and energy consumption performance: The adjustable expansion angle structure effectively disperses noise energy by changing the airflow path, reducing acoustic pollution compared with the fixed wall panel solution.

[0019] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding the solution of this application, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected by this application, and will not be exhaustively listed here. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural view of this application.

[0021] Figure 2 This is the front view of the outer structure of this application.

[0022] Figure 3 This is the front view of the inner structure of this application.

[0023] Figure 4 yes Figure 1 Enlarged view of point A.

[0024] Figure 5 yes Figure 1 Enlarged view of point B.

[0025] In the diagram: 1-Frame, 4-Side wall panel, 5-Suspension support mechanism, 6-Auxiliary support mechanism, 7-Fixed support mechanism, 8-Expansion angle adjustment mechanism; 401-Elastic plate; 501-X-Guide rail slider pair, 502-Y-Guide rail slider pair, 503-Vertical axis rotary pair; 801-Servo motor, 802-Reducer, 803-Elevator, 804-Push shaft, 805-Displacement compensation slider, 806-Slide seat. Detailed Implementation

[0026] The following non-limiting embodiments are used to illustrate this application.

[0027] Example 1 refer to Figures 1-5 As shown, a wind tunnel full-model test section expansion angle adjustment structure includes a frame 1, an upper wall plate, a lower wall plate, a side wall plate 4, a suspension support mechanism 5, an auxiliary support mechanism 6, a fixed support mechanism 7, and an expansion angle adjustment mechanism 8.

[0028] The frame 1 is fixed with an upper wall panel and a lower wall panel. The side wall panels 4 are movably mounted on the frame 1 in the horizontal direction via a suspension support mechanism 5. The side wall panels 4 are located on the left and right sides of the frame 1 and between the upper and lower wall panels. The upper wall panel, the lower wall panel, and the left and right side wall panels 4 together form a wind tunnel flow channel that runs through the front and back.

[0029] An expansion angle adjustment mechanism 8 is provided between the side wall panel 4 and the frame 1 to adjust the horizontal position of the side wall panel 4. The expansion angle adjustment mechanism 8 provides the power for the horizontal movement of the side wall panel 4, and the expansion angle of the side wall panel 4 is adjusted by the horizontal movement of the side wall panel 4.

[0030] The front end of the side wall plate 4 is an elastic plate 401. The elastic plate 401 fits into the frame 1. The elastic deformation of the front end of the side wall plate 4 compensates for the position adjustment of the side wall plate 4 itself, ensuring a flexible transition between the front end of the side wall plate 4 and the frame 1, and ensuring the airtightness of the wind tunnel flow channel.

[0031] The side wall panel 4 specifically includes a wall panel frame and a perforated wall panel. The wall panel frame has a grid structure, and the perforated wall panel is welded and fixed to the wall panel frame. The perforated wall panel forms a wind tunnel flow channel, and the various support or adjustment mechanisms act on the wall panel frame to meet the function of adjusting the opening angle of the perforated wall panel.

[0032] At least two sets of expansion angle adjustment mechanisms 8 are arranged along the front and rear. Since the front side wall panel 4 adopts an elastic plate structure, the axis of angle rotation cannot be determined when adjusting the expansion angle. Precise angle control cannot be achieved by relying solely on single-point drive. Therefore, each side wall panel must be actively adjusted by two sets of expansion angle adjustment mechanisms 8 arranged at different positions at the front and rear.

[0033] The suspension support mechanism 5 has the functions of sliding in the X direction, sliding in the Y direction, and rotating along the vertical axis. The suspension support device can effectively control the parallelism of the X and Y direction movement planes of each set of support devices, ensuring that the left and right side panels and their frames can move freely in the horizontal plane, and will not shift due to their own weight when there is no external force constraint. At least two sets of suspension support mechanisms 5 are arranged along the front and rear, and preferably at least three sets of suspension support mechanisms 5 are arranged at the upper and lower ends of the side panel 4 to ensure the stability and flexibility of the front side panel 4.

[0034] The suspension support mechanism 5 includes an X-axis guide rail slider pair 501, a Y-axis guide rail slider pair 502, and a vertical axis rotary joint 503. The frame 1 is connected to the X-axis guide rail slider pair 501, which is connected to the Y-axis guide rail slider pair 502. The Y-axis guide rail slider pair 502 is connected to the vertical axis rotary joint 503, which is connected to the side wall panel 4. The X-axis guide rail slider pair 501 and the Y-axis guide rail slider pair 502 enable horizontal X-axis and Y-axis position adjustment of the side wall panel 4, while the vertical axis rotary joint 503 enables horizontal angle adjustment of the side wall panel 4. Together, these elements form the horizontal suspension function of the suspension support mechanism 5, ensuring that the side wall panel can move freely in the horizontal plane.

[0035] The frame 1 is equipped with an auxiliary support mechanism 6 to support the horizontal movement of the side wall panel 4. The auxiliary support mechanism 6 is a radial joint bearing. The auxiliary support mechanism 6 provides sliding support to the end face of the front side wall panel 4 through its own steering and rolling functions, ensuring the levelness of the frame 1 during movement. Preferably, at least three sets of auxiliary support mechanisms 6 are arranged on both the upper and lower parts of the frame 1 to limit the upper and lower end faces of the side wall panel 4.

[0036] A fixed support mechanism 7 is provided on the side wall panel 4, which is adjustable and lockable onto the frame 1. The fixed support mechanism 7 is an L-shaped fixed support, with one end fixedly connected to the side wall panel 4 and the other end fixed to the adjustable locking elongated hole in the frame 1 by bolts. When the opening angle of the side wall panel 4 is adjusted to the correct position, the fixed support mechanism 7 locks the side wall panel 4 onto the frame 1, ensuring its stability during operation. Preferably, at least three sets of fixed support mechanisms 7 are arranged on both the upper and lower sides of the side wall panel 4, and the adjustable locking of the fixed support mechanism 7 on the frame 1 is achieved using adjusting holes and bolts.

[0037] The opening angle adjustment mechanism 8 includes a horizontal telescopic component and a lateral displacement compensation component. The column of the frame 1 is connected to the horizontal telescopic component, which provides the driving force for adjustment. The horizontal telescopic component is connected to the lateral displacement compensation component, which is connected to the side wall plate 4. Since the angle of the side wall plate 4 changes when it is adjusted, the lateral displacement compensation component compensates for the displacement difference between the two.

[0038] The horizontal telescopic assembly includes a servo motor 801, a reducer 802, and a lifting platform 803. The servo motor 801 is connected to the reducer 802, which provides power. The reducer 802 is a right-angle planetary reducer, which reduces the driving force and increases the torque. The reducer 802 is connected to the lifting platform 803, which is a trapezoidal screw jack. The power from the reducer 802 is converted into the telescopic movement of the telescopic rod inside the lifting platform. The telescopic rod of the lifting platform 803 is connected to a lateral displacement compensation assembly.

[0039] The lateral displacement compensation assembly includes a push shaft 804, a displacement compensation slider 805, and a slide seat 806. The telescopic rod of the horizontal telescopic assembly is hinged to the displacement compensation slider 805 via the push shaft 804 to match the adjustment angle of the compensation side wall plate 4. The displacement compensation slider 805 is slidably disposed in the slide seat 806 in the horizontal direction. The slide seat 806 is connected to the side wall plate 4. The horizontal sliding of the displacement compensation slider 805 is used to match the adjustment position of the compensation side wall plate 4.

[0040] Both sets of expansion angle adjustment mechanisms 8 are synchronously driven by two trapezoidal screw jacks, one above the other, and have a reliable self-locking function. The two jacks are connected to a servo motor through a right-angle planetary reducer in the middle, thus achieving synchronous servo drive. Furthermore, the jacks of the expansion angle adjustment mechanisms 8 are fixedly mounted on their respective columns, therefore they cannot meet the lateral displacement compensation requirements caused by changes in the angle of the left and right wall panels. To address this, a slider mechanism is used at the connection between the jack screw and the left and right wall panel frames, achieving both lateral displacement compensation and transmission of the jack's driving force.

[0041] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wind tunnel full-mode test section expansion angle adjustment structure, comprising a frame (1) and sidewalls (4), characterized in that: The side wall panel (4) is movably mounted on the frame (1) in the horizontal direction through the suspension support mechanism (5). An expansion angle adjustment mechanism (8) for adjusting the horizontal position of the side wall panel (4) is provided between the side wall panel (4) and the frame (1). At least two sets of expansion angle adjustment mechanisms (8) are arranged in the front and back directions. The front end of the side wall panel (4) is an elastic plate (401); the suspension support mechanism (5) has the motion functions of sliding in the X direction, sliding in the Y direction and rotating on the vertical axis; the expansion angle adjustment mechanism (8) includes a horizontal telescopic component and a lateral displacement compensation component. The frame (1) is connected to the horizontal telescopic component, the horizontal telescopic component is connected to the lateral displacement compensation component, and the lateral displacement compensation component is connected to the side wall panel (4). The suspension support mechanism (5) includes an X-axis guide rail slider pair (501), a Y-axis guide rail slider pair (502), and a vertical axis rotary pair (503). The frame (1) is connected to the X-axis guide rail slider pair (501), the X-axis guide rail slider pair (501) is connected to the Y-axis guide rail slider pair (502), the Y-axis guide rail slider pair (502) is connected to the vertical axis rotary pair (503), and the vertical axis rotary pair (503) is connected to the side wall plate (4). The horizontal telescopic assembly includes a servo motor (801), a reducer (802), and a lift (803). The servo motor (801) is connected to the reducer (802), the reducer (802) is connected to the lift (803), and the telescopic rod of the lift (803) is connected to the lateral displacement compensation assembly. The lateral displacement compensation component includes a push shaft (804), a displacement compensation slider (805), and a slide seat (806). The telescopic rod of the horizontal telescopic component is hinged to the displacement compensation slider (805) through the push shaft (804). The displacement compensation slider (805) is slidably disposed in the slide seat (806) in the horizontal direction. The slide seat (806) is connected to the side wall plate (4).

2. The wind tunnel full-model test section expansion angle adjustment structure according to claim 1, characterized in that: The frame (1) is fixed with an upper wall panel and a lower wall panel, and the side wall panel (4) is located on the left and right sides of the frame (1) and between the upper wall panel and the lower wall panel.

3. The wind tunnel full-model test section expansion angle adjustment structure according to claim 1, characterized in that: The frame (1) is provided with an auxiliary support mechanism (6) to support the horizontal movement of the side wall plate (4), and a fixed support mechanism (7) is provided on the side wall plate (4). The fixed support mechanism (7) can be adjusted and locked on the frame (1).

4. The wind tunnel full-model test section expansion angle adjustment structure according to claim 3, characterized in that: The auxiliary support mechanism (6) is a radial joint bearing; the fixed support mechanism (7) is an L-shaped fixed support. One end of the L-shaped fixed support is fixedly connected to the side wall plate (4), and the other end of the L-shaped fixed support is fixed in the adjustable locking elongated hole of the frame (1) by bolts.

Images