Flow guide wind plate of meteorological loop wind tunnel

Abstract

The utility model provides a flow guide wind plate of a meteorological loop wind tunnel, comprising a front section drainage area, two ends of which are fixed with the upper and lower inner walls of a steering section; the tail-section pointing area is parallel to the front-section drainage area, and two ends of the tail-section pointing area are mutually fixed with the upper and lower inner walls of the steering section; the middle-section flow guide area is located between the front-section flow guide area and the tail-section pointing area and comprises two arc-shaped plates, the two ends of the middle-section flow guide area are in sliding connection with the upper inner wall and the lower inner wall of the steering section, the two arc-shaped plates are arranged in a spaced mode, the bending directions of the two arc-shaped plates are the same, one sides of the two arc-shaped plates are located at the tail end of the front-section flow guide area, and the other sides of the two arc-shaped plates are located at the front end of the tail-section pointing area; and the two position adjusting mechanisms are located at the two ends of the arc-shaped plates correspondingly, connected with the arc-shaped plates and used for driving the two arc-shaped plates to move in the opposite or opposite directions. According to the technical scheme, the air inlet amount of the test section can be adjusted, air speed adjustment is more efficient and convenient, fan power does not need to be changed, and more energy is saved.

Description

Technical Field

[0001] This invention generally relates to the field of wind tunnels, and specifically to a guide vane for a meteorological loop wind tunnel. Background Technology

[0002] A loop wind tunnel is a special type of wind tunnel facility characterized by airflow circulating within a closed loop. It typically includes a power section, a diffusion section, a test section, and a recirculation section, all connected end-to-end to form a closed annular channel. Turning sections can be incorporated between these sections to assist in air deflection.

[0003] Multiple air deflectors are installed in the corner section. They are generally arc-shaped plates. An air duct is formed between adjacent air deflectors. The air is directed to the designed section by the deflectors. They only serve to deflect the air. Their structure and function are relatively simple. They only deflect the air in a spatial area.

[0004] Therefore, the inventors believe that improvements to the airflow deflector structure can not only redirect airflow but also adjust the wind speed, thus achieving energy conservation. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a guide vane for a meteorological loop wind tunnel, comprising: a front guide zone, erected inside a turning section, with its two ends fixed to the upper and lower inner walls of the turning section; a rear pointing zone, arranged parallel to the front guide zone, with its two ends fixed to the upper and lower inner walls of the turning section; a middle guide zone, located between the front guide zone and the rear pointing zone, including an arc-shaped plate erected inside the turning section, with its two ends slidably connected to the upper and lower inner walls of the turning section, and two arc-shaped plates are provided and spaced apart, the two arc-shaped plates bending in the same direction, and one side of the two arc-shaped plates being located at the end of the front guide zone, and the other side being located at the front of the rear pointing zone; and two adjusting mechanisms, respectively located at both ends of the arc-shaped plates and connected to the arc-shaped plates, for driving the two arc-shaped plates to move in opposite or opposite directions. With the above-mentioned technical features, the adjustment mechanism can adjust the width of the middle part of the guide vane, thereby adjusting the duct size between adjacent guide vanes. With the fan power unchanged, the air intake volume can be changed by adjusting the width of the middle part of the guide vane, which is beneficial to adjusting the air intake volume of the test section, making the wind speed adjustment more efficient and convenient, and without changing the fan power, thus saving more energy.

[0006] In some embodiments, the adjustment mechanism includes synchronous adjustment components disposed at both ends of the arc-shaped plate and a power component that provides power to the synchronous adjustment components. The synchronous adjustment components include two sliders fixed to the same end of each arc-shaped plate, each slider being slidably connected to the inner wall of the deflection section; and a screw passing through both sliders and threadedly connected to them. The two ends of the screw are rotatably connected to the outer wall of the deflection section, and the external threads of the screw are symmetrically arranged from the middle to both ends. Thus, the power component drives the screw to rotate, and through the threaded connection between the screw and the two sliders, the two arc-shaped plates are displaced in opposite or opposing directions under limited conditions, thereby adjusting the width of the middle section of the guide vane and further adjusting the width of the air duct between adjacent guide vanes.

[0007] In some embodiments, two adjustment mechanisms are provided at the same end of the arc-shaped plate, and the two screws are parallel to each other. Thus, due to the influence of the length of the arc-shaped plate, providing two adjustment mechanisms can, on the one hand, increase the supporting force at both ends of the arc-shaped plate and improve the stability of the arc-shaped plate support; on the other hand, it can reduce the driving pressure of the adjustment mechanisms when driving the displacement of the two arc-shaped plates.

[0008] In some embodiments, a synchronization component is further included to simultaneously drive the two screws to rotate synchronously. The synchronization component includes two gears, which are coaxially fixed to each screw; and a chain, which is sleeved on the periphery of both gears and meshes with the teeth of the two gears. Thus, the synchronization component reduces the number of power components, saves excess energy consumption, and has a simple structure that is easy to maintain.

[0009] In some embodiments, the front airflow guiding area includes a front airflow guide plate, erected within the steering section, with its upper and lower ends fixedly connected to the inner wall of the steering section; and a front deformation plate, which covers the outer side of the front airflow guide plate along its contour. Both ends of the front deformation plate extend towards the same-side arc-shaped plate and are located on the windward side of each arc-shaped plate. The end of the front deformation plate is slidably connected to the arc-shaped plate. Thus, the front airflow guide plate serves a positioning function, and the front deformation plate provides a smooth, rounded transition. As the two arc-shaped plates shift, the deformation plate fills the gap between the front airflow guide plates, resulting in smoother airflow guidance and a more natural transition. Furthermore, the end of the front deformation plate, located on the windward side of the arc-shaped plate, does not obstruct airflow due to its thickness.

[0010] In some embodiments, a plurality of first limiting sliders are fixedly connected to the end of the front deformation plate facing the arc-shaped plate. Each arc-shaped plate has a first limiting groove positioned opposite to the first limiting sliders along the airflow direction. The first limiting sliders are located within the first limiting grooves and are slidably connected to them. Thus, as the arc-shaped plate moves, the front deformation plate connected to it deforms accordingly, thereby causing the first limiting sliders to move within the first limiting grooves. This ensures that the front deformation plate fills the gap at the front end of the arc-shaped plate and guarantees the flow of air.

[0011] In some embodiments, the final pointing region includes a final guide vane erected within the turning section, with its upper and lower ends fixedly connected to the inner wall of the turning section; and a final deformation plate covering the outer side of the final guide vane along its contour. The final deformation plate extends towards the arc-shaped plate on the same side and is located on the leeward side of each arc-shaped plate, with its end slidably connected to the arc-shaped plate. Thus, the final guide vane serves a positioning and pointing function, and as the arc-shaped plate moves, the two ends of the final deformation plate fill the gap between the final guide vane and the end of the arc-shaped plate. Furthermore, the position of the final guide vane limits the swing amplitude of the final deformation plate, ensuring consistent airflow. Moreover, the end of the final deformation plate is located on the leeward side of the arc-shaped plate, reducing the impact of its own thickness on the airflow.

[0012] In some embodiments, the end of the arc-shaped plate facing the final section pointing area has several second limiting sliders protruding on the leeward side, and the area corresponding to the positions of the second limiting sliders on the final section deformation plate has a second limiting groove along the airflow direction. Thus, through the sliding of the second limiting sliders and the second limiting grooves, not only is the connection between the final section deformation plate and the arc-shaped plate achieved, but the normal displacement of the arc-shaped plate is not affected, and wind resistance is reduced.

[0013] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0014] Figure 1 A cross-sectional view of a weather loop wind tunnel turning section according to an embodiment of the present invention is shown;

[0015] Figure 2 A schematic diagram of the structure of a guide vane for a meteorological loop wind tunnel according to an embodiment of the present invention is shown;

[0016] Figure 3A schematic diagram of the adjusting mechanism in the guide vane of a meteorological loop wind tunnel according to an embodiment of the present invention is shown.

[0017] Figure 4 A cross-sectional schematic diagram of the front section of the air guide plate in a meteorological loop wind tunnel according to an embodiment of the present invention is shown.

[0018] Figure 5 It shows Figure 4 A magnified view of detail A, showing the connection structure between the front deformable plate and the curved plate;

[0019] Figure 6 This diagram shows a cross-sectional schematic of the final section of the guide vane in a meteorological loop wind tunnel according to an embodiment of the present invention.

[0020] Figure 7 It shows Figure 6 A magnified diagram of detail B, showing the connection structure between the final deformable plate and the arc plate.

[0021] Symbol Explanation

[0022] 1. Steering section; 11. Air guide vane; 2. Front air intake area; 21. Front air guide plate; 22. Front deformation plate; 3. Middle air intake area; 31. Arc plate; 311. First limiting groove; 4. Final pointing area; 41. Final air guide plate; 42. Final deformation plate; 421. Second limiting groove; 5. Adjustment mechanism; 51. Synchronous adjustment component; 511. Slider; 512. Screw; 52. Power component; 53. Synchronous component; 531. Gear; 532. Chain; 6. First limiting slider; 61. First mating block; 62. First limiting block; 7. Second limiting slider; 71. Second mating block; 72. Second limiting block. Detailed Implementation

[0023] The preferred embodiments (or implementation methods) of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] This invention provides a guide vane 11 for a meteorological loop wind tunnel, which is installed inside the turning section 1. Figure 1 A cross-sectional view of a meteorological loop wind tunnel steering section 1 according to an embodiment of the present invention is shown, with reference to... Figure 1 As shown, multiple arc-shaped air guide vanes 11 are vertically arranged inside the turning section 1. The air guide vanes 11 are parallel and spaced apart, and air ducts are formed between adjacent air guide vanes 11 to guide air from the inlet end of the turning section 1 to the outlet end of the turning section 1.

[0025] Figure 2 A schematic diagram of the structure of a guide vane 11 for a meteorological loop wind tunnel according to an embodiment of the present invention is shown. (Reference) Figure 2As shown, the air guide plate 11 provided in this embodiment includes a front section air guide area 2, a middle section air guide area 3 and a rear section air guide area 4.

[0026] The middle section guide zone 3 includes two arc-shaped plates 31 with the same bending direction. One end of the two arc-shaped plates 31 is used to connect to the end of the front section guide zone 2 and to guide the flow of air. The two arc-shaped plates 31 are spaced apart in the turning section 1. Both ends of each arc-shaped plate 31 extend toward the upper and lower walls of the turning section 1 and slide to connect with the upper and lower walls of the turning section 1, so that the two arc-shaped plates 31 can move in opposite or opposite directions.

[0027] Each end of the two arc-shaped plates 31 is provided with an adjustment mechanism 5 that drives the two arc-shaped plates 31 to move in opposite or opposite directions. Figure 3 The diagram shows a schematic representation of the adjusting mechanism 5 in the guide vane 11 of a meteorological loop wind tunnel according to an embodiment of the present invention. (Refer to...) Figure 3 As shown, the adjustment mechanism 5 is located outside the housing of the steering section 1 and includes a synchronous adjustment assembly 51 and a power component 52 that drives the synchronous adjustment assembly 51. The synchronous adjustment assembly 51 includes sliders 511 fixed to the ends of each arc-shaped plate 31, the sliders 511 extending through the sidewall of the steering section 1 and slidably connected to the sidewall; it also includes a screw 512, which passes through and is threadedly connected to the two sliders 511. The external thread of the screw 512 has two sections, symmetrically arranged from the middle to both ends. The power component 52 can be a motor, the motor body being fixedly connected to the outer wall of the steering section 1, and the output shaft of the motor being coaxially fixed to one end of the screw 512. To achieve synchronous control of the two arc-shaped plates 31, the screws 512 in the synchronous adjustment assemblies 51 at both ends of the arc-shaped plates 31 need to be parallel to each other and rotate synchronously; by the motor driving the screws 512 to rotate forward or reverse, the two arc-shaped plates 31 are moved in opposite directions.

[0028] To improve the stability of the displacement of the two arc-shaped plates 31, two synchronous adjustment components 51 are provided on each side of the arc-shaped plates 31, and the two screws 512 are parallel to each other. To reduce the energy consumption of multiple power components 52, a synchronous component 53 is also provided between the two screws 512 to drive the two screws 512 to rotate synchronously. The synchronous component 53 includes a gear 531 coaxially fixed to each screw 512, and a chain 532 sleeved on both gears 531. By driving one of the screws 512 to rotate through the power component 52, and transmitting the power through the gear 531 and chain 532, the synchronous rotation of the two screws 512 is ensured, and the two arc-shaped plates 31 are stably driven to perform the displacement operation.

[0029] Figure 4This diagram shows a cross-sectional view of the front section of the air intake zone 2 in the guide vane 11 of a meteorological loop wind tunnel according to an embodiment of the present invention. (See reference) Figure 4 As shown, the front section of the airflow guide zone 2 includes a front section guide plate 21 and a front section deformation plate 22. The front section guide plate is erected inside the turning section 1, with both ends extending towards the upper and lower walls of the turning section 1 and fixedly connected to the upper and lower walls of the turning section 1. The cross-section of the front section guide plate is an isosceles triangle, with its apex pointing towards the air inlet of the turning section 1 and its two sides pointing towards the middle section of the airflow guide zone 3. The front section deformation plate 22 is folded in half from the middle and attached to the tip of the front section guide plate, while its two side walls cover the outer side of the front section guide plate along its contour, fixing the middle part of the front section deformation plate 22 to the tip of the front section guide plate. The two ends of the front section deformation plate 22 extend along the sides of the front section guide plate towards the corresponding side arc plate 31, so that the ends of the front section deformation plate 22 are located on the windward side of the corresponding side arc plate 31 and slide relative to the arc plate 31 along the airflow direction.

[0030] Figure 5 It shows Figure 4 A magnified view of detail A, showing the connection structure between the front deformable plate 22 and the arc-shaped plate 31. (Reference) Figure 5 As shown, multiple first limiting sliders 6 are spaced apart along the length of the front deformation plate 22 on the side facing the arc plate 31. Each first limiting slider 6 includes a first mating block 61 and a first limiting block 62. The first limiting block 62 is cylindrical, with one end fixed to the front deformation plate 22. The diameter of the first limiting block 62 is larger than that of the first mating block 61, and it is fixed to the end of the first limiting block 62 away from the front deformation plate 22. The arc plate 31 and the area corresponding to each first limiting slider 6 are provided with a strip-shaped first limiting groove 311 along the horizontal direction of airflow. The first mating block 61 is located in the first limiting groove 311 and slides against the inner wall of the first limiting groove 311. The width of the first limiting groove 311 is the same as the diameter of the first mating block 61, making the sliding of the first mating block 61 in the first limiting groove 311 more stable.

[0031] As the two arc-shaped plates 31 shift, the front deformation plate 22 is connected to the end of the arc-shaped plate 31 by the first limiting slider 6, thereby driving the first mating block 61 to slide within the first limiting groove 311. This causes the front deformation plate 22 to change its own deformation area and smoothly guide the airflow to the windward side of the arc-shaped plate 31. This not only does not affect the displacement of the two arc-shaped plates 31, but also reduces wind resistance and ensures smooth airflow.

[0032] Figure 6This diagram shows a cross-sectional view of the final pointing region 4 in the guide vane 11 of a meteorological loop wind tunnel according to an embodiment of the present invention. (See reference) Figure 6 As shown, the final direction zone 4 includes a final guide plate 41 and a final deformation plate 42. The final guide plate 41 is erected inside the turning section 1, and its two ends extend toward the upper and lower walls of the turning section 1 and are fixedly connected to the upper and lower walls of the turning section 1. The terminal deflector 41 has a triangular cross-section, with its tip pointing towards the air outlet of the turning section 1 and its two sides pointing towards the middle deflector zone 3. The terminal deformation plate 42 is folded in half from the middle and attached to the tip of the terminal deflector 41. Its two side walls cover the outer side of the terminal deflector 41 along the outline of the terminal deflector 41, and fix the middle part of the terminal deformation plate 42 to the tip of the terminal deflector 41. The two ends of the terminal deformation plate 42 extend along the waist side of the terminal deflector 41 towards the corresponding side arc plate 31, so that the end of the terminal deformation plate 42 is located on the leeward side of the corresponding side arc plate 31 and slides against the arc plate 31 along the airflow direction.

[0033] Figure 7 It shows Figure 6 A magnified view of detail B, showing the connection structure between the final deformable plate 42 and the arc-shaped plate 31. (Reference) Figure 7 As shown, multiple second limiting sliders 7 are provided on the arc-shaped plate 31 facing the end of the final pointing area 4 and on the side facing the final deformation plate 42. The second limiting sliders 7 are arranged at intervals along the edge of the arc-shaped plate 31. The second limiting slider 7 includes a second mating block 71 and a second limiting block 72. The second mating block 71 is cylindrical, and one end of it is fixedly connected to the arc-shaped plate 31. The second limiting block 72 is also cylindrical, but its diameter is larger than that of the second limiting block 72, and it is coaxially fixed to the end of the second mating block 71 away from the arc-shaped plate 31. The area of ​​the final deformation plate 42 corresponding to the second limiting slider 7 is provided with a strip-shaped second limiting groove 421 along the horizontal direction of airflow. The second mating block 71 is located in the second limiting groove 421 and slides against the inner wall of the second limiting groove 421. The width of the second limiting groove 421 is the same as the diameter of the second mating block 71, which makes the sliding of the second mating block 71 in the second limiting groove 421 more stable.

[0034] As the two arc-shaped plates 31 shift, the ends of the arc-shaped plates 31 are connected to the ends of the final deformation plates 42 by the second limiting slider 7, thereby driving the second mating block 71 to slide within the second limiting groove 421, and causing the final deformation plates 42 to change their own deformation area accordingly, and smoothly guide the air to the direction of the final guide plate 41. Since the ends of the final deformation plates 42 are located on the leeward side of the arc-shaped plates 31, the wind resistance caused by the thickness of the final deformation plates 42 is avoided, ensuring smooth airflow.

[0035] When the loop wind tunnel is in operation, the staff can change the width of the air duct by simply changing the distance between the two arc plates 31 in the middle guide zone 3 through the adjustment mechanism 5 without changing the power of the fan, thereby changing the air intake and wind speed of the test section and saving energy consumption.

[0036] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A guide vane (11) for a meteorological loop wind tunnel, characterized in that, include: The front drainage area (2) is erected inside the turning section (1), and its two ends are fixed to the upper and lower inner walls of the turning section (1); The final pointing area (4) is arranged parallel to the front drainage area (2), and its two ends are fixed to the upper and lower inner walls of the turning section (1); The middle diversion zone (3) is located between the front diversion zone (2) and the final pointing zone (4), including... An arc-shaped plate (31) is erected inside the turning section (1), with its two ends slidingly connected to the upper and lower inner walls of the turning section (1). There are two arc-shaped plates (31) and they are spaced apart. The two arc-shaped plates (31) have the same bending direction. One side of the two arc-shaped plates (31) is located at the end of the front section drainage area (2), and the other side is located at the front end of the end section pointing area (4). Two adjustment mechanisms (5) are provided, located at both ends of the arc plate (31) and connected to each other, to drive the two arc plates (31) to move in opposite or opposite directions.

2. The air guide vane (11) for a meteorological loop wind tunnel according to claim 1, characterized in that, The adjustment mechanism (5) includes synchronous adjustment components (51) disposed at both ends of the arc plate (31) and a power component (52) that provides power to the synchronous adjustment components (51); the synchronous adjustment components (51) include Two sliders (511) are provided and fixed to the same end of each of the arc plates (31). Each slider (511) is slidably connected to the inner wall of the turning section (1). The screw (512) passes through two sliders (511) and is threadedly connected to the two sliders (511). The two ends of the screw (512) are rotatably connected to the outer wall of the steering section (1). The external threads of the screw (512) are symmetrically arranged from the middle to both ends.

3. The air guide vane (11) for a meteorological loop wind tunnel according to claim 2, characterized in that, Two synchronous adjustment components (51) are provided at the same end of the arc plate (31), and the two screws (512) are parallel to each other.

4. The air guide vane (11) for a meteorological loop wind tunnel according to claim 3, characterized in that, It also includes a synchronization component (53) that simultaneously drives the two screws (512) to rotate synchronously. The synchronization component (53) includes... Two gears (531) are provided and are coaxially fixed to each screw (512); The chain (532) is simultaneously sleeved on the periphery of the two gears (531) and meshes with the teeth of the two gears (531).

5. The air guide vane (11) for a meteorological loop wind tunnel according to claim 3, characterized in that, The anterior drainage area (2) includes The front guide plate (21) is erected inside the steering section (1), and its upper and lower ends are fixedly connected to the inner wall of the steering section (1); The front deformation plate (22) covers the outer side of the front guide plate (21) along the outline of the front guide plate (21). The two ends of the front deformation plate (22) extend towards the arc plate (31) on the same side and are located on the windward side of each arc plate (31). The end of the front deformation plate (22) is slidably connected to the arc plate (31).

6. The air guide vane (11) of a meteorological loop wind tunnel according to claim 5, characterized in that, The front deformation plate (22) is fixed to a plurality of first limiting sliders (6) on the side facing the arc plate (31). The arc plate (31) has a first limiting groove (311) at a position opposite to the first limiting slider (6) along the air flow direction. The first limiting slider (6) is located in the first limiting groove (311) and is slidably connected to the first limiting groove (311).

7. The air guide vane (11) for a meteorological loop wind tunnel according to claim 5, characterized in that, The terminal pointing area (4) includes The final guide vane (41) is erected inside the steering section (1), and its upper and lower ends are fixedly connected to the inner wall of the steering section (1); The final deformation plate (42) covers the outer side of the final guide plate (41) along the contour of the final guide plate (41). The final deformation plate (42) extends towards the arc plate (31) on the same side and is located on the leeward side of each arc plate (31). The end of the final deformation plate (42) is slidably connected to the arc plate (31).

8. The air guide vane (11) for a meteorological loop wind tunnel according to claim 7, characterized in that, The end of the arc plate (31) facing the end pointing area (4) is provided with several second limiting sliders (7) on the leeward side. The area corresponding to the position of the end deformation plate (42) and the second limiting sliders (7) is provided with a second limiting groove (421) along the air flow direction.

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