A corner fairing for a large low speed wind tunnel

Abstract

A large low-speed wind tunnel corner fairing, comprising a fairing main body, the bottom surface of the fairing main body is provided with a bottom surface fixed support and a bottom surface one-way sliding support, the top surface of the fairing main body is provided with a top surface fixed support and a top surface one-way sliding support; wherein the bottom surface one-way sliding support comprises a first fixed part installed on the bottom wall and a first moving part capable of moving in the first direction relative to the first fixed part; the top surface fixed support comprises a second fixed part installed on the top wall and a second moving part capable of moving in the vertical direction relative to the second fixed part; the top surface one-way sliding support comprises a third fixed part installed on the top wall and a third moving part capable of moving in the vertical direction and the second direction relative to the third fixed part. The present application realizes the release of thermal deformation of the large fairing structure in the height and length directions while ensuring that the fairing has sufficient rigidity through simple support arrangement, and has wide application value.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel equipment, and more specifically to a large low-speed wind tunnel corner guide vane. Background Technology

[0002] Corner guide vanes are typically installed in arrays in recirculating wind tunnels to guide airflow smoothly at corners, minimizing airflow separation, energy loss, and eddies, thus ensuring uniform and stable airflow in subsequent test sections. For large low-speed wind tunnels, each guide vane in the array has a very large chord length, height, and mass; for example, its height can reach 20-40 meters, and its weight can approach 100 tons. During wind tunnel operation, in addition to deformation caused by aerodynamic loads, the guide vanes also undergo significant thermal deformation due to the high temperatures inside the tunnel. If the structural thermal deformation of the guide vanes cannot be effectively released, very large thermal stresses will be generated, which may, in severe cases, cause structural damage to the guide vanes and the wind tunnel structure.

[0003] In existing technologies, to address the thermal deformation problem of large guide vanes, patent CN118730466A discloses a wind tunnel corner guide device. This device utilizes a shaped wall to fix an array of guide vanes and employs cables to connect the guide vanes' connectors. The prestress of the cables counteracts their thermal stress, while the tension and deformation of the cables also counteract the thermal deformation of the guide vanes in the diagonal direction. However, this cable- and shaped wall-based structure is overly complex and difficult to install. Furthermore, the cable-based method of counteracting thermal deformation requires cumbersome and precise design of the cable's prestress, connection position, and materials, resulting in low versatility and reliability. Moreover, the cable structure needs to act on the connectors on the guide vanes, forcing the guide vanes to adopt a segmented structure. This segmented structure not only has low stiffness but also allows the connectors on each guide vane to have uncontrollable effects on airflow.

[0004] Therefore, it is necessary to effectively reduce the adverse effects of thermal deformation of large guide vanes while ensuring that the guide vanes have sufficient rigidity and strength. Summary of the Invention

[0005] The purpose of this invention is to provide a large low-speed wind tunnel corner guide vane, which is based on a fixed support and a one-way sliding support installed on the bottom and top surfaces of the guide vane body. This not only ensures that the guide vane has sufficient rigidity, but also effectively releases the thermal deformation of the large guide vane structure in the height and length directions, thereby improving the safety of the large guide vane in use.

[0006] This invention is achieved through the following technical solution:

[0007] A large low-speed wind tunnel corner guide vane includes a guide vane body. The bottom surface of the guide vane body is provided with a bottom surface fixed support and a bottom surface one-way sliding support. The top surface of the guide vane body is provided with a top surface fixed support and a top surface one-way sliding support. The bottom surface one-way sliding support includes a first fixed part mounted on a bottom wall and a first movable part mounted on the bottom surface of the guide vane body. The first movable part is movable relative to the first fixed part along a first direction, the first direction being parallel to the first direction between the bottom surface fixed support and the bottom surface one-way sliding support. The connecting line; the top surface fixed support includes a second fixed part installed on the top wall and a second movable part installed on the top surface of the guide vane body, the second movable part being able to move vertically relative to the second fixed part; the top surface one-way sliding support includes a third fixed part installed on the top wall and a third movable part installed on the top surface of the guide vane body, the third movable part being able to move vertically and in a second direction relative to the third fixed part, the second direction being parallel to the second connecting line between the top surface fixed support and the top surface one-way sliding support.

[0008] In this technical solution, the guide vane body is a one-piece structure, with both its top and bottom surfaces being arc-shaped, or more precisely, an airfoil with the curvature gradually increasing and then gradually decreasing. A bottom-fixed support and a bottom-one-way sliding support are provided on the bottom surface of the guide vane body, serving as the main load-bearing components. The bottom-fixed support constrains horizontal displacement in all directions, allowing only a slight rotation at its connection point with the guide vane body relative to its connection point with the bottom wall. The bottom-one-way sliding support allows its first moving part to move relative to the first fixed part along the line connecting the bottom-fixed support and the bottom-one-way sliding support, thereby effectively releasing thermal deformation along its length.

[0009] In this technical solution, a top surface fixed support and a top surface one-way sliding support are provided on the top surface of the guide vane body. These two supports, together with the bottom surface fixed support and one-way sliding support, significantly improve the rigidity of the guide vane body, thereby enabling the guidance of airflow with greater load. Simultaneously, the second moving part of the top surface fixed support can move vertically towards or away from the second fixed part, while the third moving part of the top surface one-way sliding support can not only move vertically towards or away from the third fixed part, but also move relative to the third fixed part along the line connecting the top surface fixed support and the top surface one-way sliding support, thereby achieving thermal deformation in both the length and height directions.

[0010] In this technical solution, the fixed supports and one-way sliding supports installed on the bottom and top surfaces of the guide vane body constitute four support points connecting the guide vane body to the bottom and top walls of the wind tunnel. This provides sufficient rigidity for the guide vane body to bear the high-speed airflow load. At the same time, the one-way sliding supports allow the guide vane body to release thermal deformation in the length direction along the line connecting the fixed supports and the one-way sliding supports. The fixed supports and one-way sliding supports on the top surface can release thermal deformation in the height direction along the vertical direction. Thus, through a simple support deployment, it is possible to ensure that the guide vane has sufficient rigidity while releasing the thermal deformation of the large guide vane structure in the height and length directions, which has broad application value.

[0011] In a preferred embodiment of the present invention, the third connecting line between the bottom fixed support and the top fixed support, and the fourth connecting line between the bottom one-way sliding support and the top one-way sliding support are both perpendicular to the horizontal plane.

[0012] In this technical solution, the line connecting the bottom fixed support and the top fixed support is perpendicular to the horizontal plane. The connecting line between the two fixed supports is a virtual line, with its two ends connected to the center points of the two fixed supports, respectively. Similarly, the virtual connecting line between the bottom one-way sliding support and the top one-way sliding support is also perpendicular to the horizontal plane, with its two ends connected to the center points of the two one-way sliding supports, respectively. Through this arrangement, the two fixed supports on the bottom and top surfaces, as well as the two one-way sliding supports, are paired and their vertical center lines coincide. This ensures the consistency of the fixed positions of the upper and lower parts of the guide vane body, effectively improving the rigidity of the guide vane body, and also ensures the coordination of deformation between the upper and lower parts of the guide vane body.

[0013] Furthermore, after the two fixed supports and the one-way sliding support on the bottom and top surfaces are paired, the first connecting line between the bottom fixed support and the bottom one-way sliding support will also be parallel to the second connecting line between the top fixed support and the top one-way sliding support. This ensures that the four support points connecting the guide vane body to the bottom and top walls of the wind tunnel are located in the same vertical plane. This not only ensures the consistency of the guiding position of the upper and lower parts of the guide vane body, but also ensures the coordination of the deformation of the upper and lower parts of the guide vane body, further promoting the release of thermal deformation of the guide vane body in the height and length directions.

[0014] Furthermore, the center point of the bottom fixed support and the center point of the bottom one-way sliding support are located on the first middle arc line of the bottom surface of the guide vane body; the center point of the top fixed support and the center point of the top one-way sliding support are located on the second middle arc line of the top surface of the guide vane body.

[0015] In this technical solution, both the bottom and top surfaces of the guide vane body have virtual mid-arc lines. These mid-arc lines are smooth curves formed by connecting a series of normal midpoints, reflecting the curvature trend of the bottom and top contours of the guide vane body. Specifically, the center points of the bottom fixed support and the bottom one-way sliding support are located on the first mid-arc line of the arc-shaped structure on the bottom surface of the guide vane body; the center points of the top fixed support and the top one-way sliding support are located on the second mid-arc line of the arc-shaped structure on the top surface of the guide vane body. By placing the four support points of the guide vane body on the mid-arc lines of the top and bottom surfaces, the rigidity of the guide vane body and the coordination of deformation along the length direction can be further improved, better promoting the release of thermal deformation along the length direction of the large guide vane body.

[0016] In a preferred configuration of the fixed support and unidirectional sliding support positions on the top and bottom surfaces in this invention, along the extension direction of the first middle arc, the length between the center point of the bottom fixed support and the first end of the first middle arc is 1 / 5 to 2 / 5 of the length of the first middle arc, and the length between the center point of the bottom unidirectional sliding support and the first end is 3 / 5 to 4 / 5 of the length of the first middle arc; along the extension direction of the second middle arc, the length between the center point of the top fixed support and the second end of the second middle arc is 1 / 5 to 2 / 5 of the length of the second middle arc, and the length between the center point of the top unidirectional sliding support and the second end is 3 / 5 to 4 / 5 of the length of the second middle arc.

[0017] When designing the positions of the four support points, the fixed supports and one-way sliding supports on the same plane should be positioned where the curvature of the guide vane body is greater, so that the rectangular area formed by the four support points has greater stiffness to cope with greater aerodynamic loads; at the same time, the fixed supports and one-way sliding supports on the same plane should also be positioned at the two ends where the curvature of the guide vane body is the smallest, so as to achieve coordination of thermal deformation over a wider range on the guide vane body.

[0018] In this technical solution, the first end of the first arc is taken as the starting end. The arc length between the first end and the center point of the fixed support is 1 / 5 to 2 / 5 of the total arc length of the first arc, and the arc length between the first end and the center point of the one-way sliding support is 3 / 5 to 4 / 5 of the total arc length of the first arc. For example, assuming the total length of the first arc is L, the center point of the fixed support is located in the range of 1 / 5L to 2 / 5L from the first end, and the center point of the one-way sliding support is located in the range of 3 / 5L to 4 / 5L from the first end.

[0019] Similarly, taking the second segment of the second middle arc as the starting point, the arc length between it and the center point of the fixed support is 1 / 5 to 2 / 5 of the total arc length of the second middle arc, and the arc length between it and the center point of the unidirectional sliding support is 3 / 5 to 4 / 5 of the total arc length of the second middle arc.

[0020] By setting the positions of the four support points, the stiffness and thermal deformation coordination of the guide vane body can be effectively balanced by the combination of fixed supports and unidirectional sliding supports, thereby better coping with the high-frequency vibration and dynamic aerodynamic loads caused by high-speed airflow in the wind tunnel.

[0021] Furthermore, the bottom fixed support includes a fixed basin-type rubber support, the upper support plate of the fixed basin-type rubber support is connected to a first connecting plate installed at the bottom of the guide vane body, and the lower support plate of the fixed basin-type rubber support is connected to a first mounting plate installed on the bottom wall.

[0022] In this technical solution, the fixed pot bearing adopts the existing fixed pot bearing structure, in which there is no horizontal displacement between the upper and lower support plates, only a slight rotation. The upper support plate is connected to a first connecting plate located at the bottom of the guide vane body, and the lower support plate is connected to a first mounting plate installed on the bottom wall, thus serving as the main load-bearing component to stably transfer the weight of the guide vane body to the soil foundation below the bottom wall.

[0023] Furthermore, the bottom unidirectional sliding support includes a unidirectional sliding basin rubber support. The upper support plate of the unidirectional sliding basin rubber support serves as a first moving part and is connected to a second connecting plate installed at the bottom of the guide vane body. The lower support plate of the unidirectional sliding basin rubber support serves as a first fixing part and is connected to a second mounting plate installed on the bottom wall.

[0024] In this technical solution, the unidirectional sliding pot rubber bearing also adopts the existing unidirectional sliding pot rubber bearing structure. The upper support plate is connected to the second connecting plate set at the bottom of the guide vane body, and the lower support plate is connected to the second mounting plate installed on the bottom wall. As an auxiliary support component, it shares the weight of the guide vane body with the bottom fixed support. At the same time, the upper support plate and the lower support plate of the unidirectional sliding pot rubber bearing can move in a specific direction, thereby realizing the movement of the upper support plate along the first direction to release thermal deformation in the length direction.

[0025] Furthermore, the top surface fixed support includes a cylindrical guide sleeve and a cylindrical guide shaft. The cylindrical guide sleeve is provided with a guide hole, and the cylindrical guide shaft is provided with a guide shaft that can move along the guide hole. The cylindrical guide shaft serves as a second fixed part connected to a fourth mounting plate mounted on the top wall, and the cylindrical guide sleeve serves as a second movable part connected to a fourth connecting plate mounted on the top of the guide vane body. Alternatively, the cylindrical guide sleeve serves as a second fixed part connected to a fourth mounting plate mounted on the top wall, and the cylindrical guide shaft serves as a second movable part connected to a fourth connecting plate mounted on the top of the guide vane body.

[0026] In this technical solution, the cylindrical guide shaft seat can be connected to the fourth connecting plate on the top surface of the guide vane body, and the cylindrical guide shaft seat can be set on the fourth mounting plate on the top wall of the wind tunnel; or conversely, the cylindrical guide shaft seat can be set on the fourth mounting plate on the top wall of the wind tunnel, and the cylindrical guide shaft seat can be connected to the fourth connecting plate on the top surface of the guide vane body.

[0027] The guide hole on the cylindrical guide sleeve matches the position and diameter of the guide shaft on the cylindrical guide shaft seat, thus combining the fixed support and unidirectional sliding support on the bottom surface. This not only provides reliable lateral support for the guide vane body, but also allows the guide vane body to effectively release the thermal deformation generated along the height direction, effectively ensuring the safety of the guide vane structure.

[0028] Furthermore, the top surface unidirectional sliding support includes a sliding guide groove seat and a sliding guide plate seat. The sliding guide groove seat is provided with a guide groove, and the sliding guide plate seat is provided with a guide plate that can move along the guide groove. The sliding guide groove seat is connected as a third fixed part to a fifth mounting plate installed on the top wall, and the sliding guide plate seat is connected as a third moving part to a fifth connecting plate installed on the top of the guide vane body. Alternatively, the sliding guide plate seat is connected as a third fixed part to a fifth mounting plate installed on the top wall, and the sliding guide groove seat is connected as a third moving part to a fifth connecting plate installed on the top of the guide vane body.

[0029] In this technical solution, the sliding guide slot seat can be installed on the fifth mounting plate on the top wall, and the sliding guide plate seat can be connected to the fifth connecting plate installed on the top of the guide vane body; or conversely, the sliding guide slot seat can be connected to the fifth connecting plate installed on the top of the guide vane body, and the sliding guide plate seat can be installed on the fifth mounting plate on the top wall.

[0030] The guide groove of the sliding guide slot seat matches the structure, size and position of the guide plate of the sliding guide plate seat. This not only allows the guide plate to move vertically within the guide groove, but also to reciprocate along the extension direction of the guide groove, i.e., the second direction. This not only provides reliable lateral support for the main body of the guide vane, but also releases thermal deformation along the length and height directions, improving the safety of large guide vane structure applications.

[0031] In a preferred embodiment of the present invention, at least one bidirectional sliding support is provided on the bottom surface of the guide vane body. The bidirectional sliding support includes a bidirectional sliding basin rubber support. The upper support plate of the bidirectional sliding basin rubber support is connected to a third connecting plate installed at the bottom of the guide vane body, and the lower support plate of the bidirectional sliding basin rubber support is connected to a third mounting plate installed on the bottom wall.

[0032] In this technical solution, at least one bidirectional sliding support is also provided on the bottom surface of the guide vane body. The bidirectional sliding support includes a bidirectional sliding pot-type rubber support, which can also adopt the existing bidirectional sliding pot-type rubber support structure. The upper support plate of the bidirectional sliding pot-type rubber support is connected to the guide vane body, and the lower support plate is connected to the bottom wall, thereby allowing the upper support plate to move relative to the lower support plate in multiple directions on the horizontal plane. In this technical solution, the bidirectional sliding support can work in conjunction with the bottom surface fixed and the unidirectional sliding support to provide stable vertical support. The number of bidirectional sliding supports can be one or more.

[0033] In some preferred embodiments, in order to better support the guide vane body, the center point of the bidirectional sliding support is located on the first mid-arc line of the bottom surface of the guide vane body.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] 1. The present invention provides four support points for connecting the guide vane body to the bottom and top walls of the wind tunnel by fixed supports and one-way sliding supports installed on the bottom and top surfaces of the guide vane body. This provides sufficient rigidity for the guide vane body to bear the load of high-speed airflow. At the same time, the one-way sliding supports allow the guide vane body to release thermal deformation in the length direction along the line connecting the fixed supports and the one-way sliding supports. The fixed supports and one-way sliding supports on the top surface can release thermal deformation in the height direction in the vertical direction. Thus, through simple support deployment, it is possible to ensure that the guide vane has sufficient rigidity while releasing the thermal deformation of the large guide vane structure in the height and length directions, which has broad application value.

[0036] 2. The two fixed supports on the bottom and top surfaces of the present invention, as well as the two unidirectional sliding supports, are paired and their vertical center lines coincide. This ensures the consistency of the fixed positions of the upper and lower parts of the guide vane body, effectively improving the rigidity of the guide vane body. Moreover, the four support points connecting the guide vane body to the bottom and top walls of the wind tunnel are located in the same vertical plane. This not only ensures the consistency of the guiding positions of the upper and lower parts of the guide vane body, but also ensures the coordination of the deformation of the upper and lower parts of the guide vane body, further promoting the release of thermal deformation of the guide vane body in the height and length directions.

[0037] 3. By setting the positions of the four support points, the present invention can effectively balance the stiffness and thermal deformation coordination of the guide vane body by using the cooperation of fixed support and unidirectional sliding support, thereby better coping with the high-frequency vibration and dynamic aerodynamic load caused by high-speed airflow in the wind tunnel.

[0038] 4. The top surface fixed support and unidirectional sliding support of the present invention can not only provide reliable lateral support for the guide vane body, but also release thermal deformation along the length and height directions, thereby improving the safety of large guide vane structure applications.

[0039] 5. The bidirectional sliding support of the present invention can work in conjunction with the bottom-fixed and unidirectional sliding supports to provide stable vertical support. Attached Figure Description

[0040] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0041] Figure 1 This is a schematic diagram of the flow guide plate in a specific embodiment of the present invention;

[0042] Figure 2 This is a bottom view of the guide vane in a specific embodiment of the present invention;

[0043] Figure 3 This is a top view of the guide vane in a specific embodiment of the present invention;

[0044] Figure 4 This is a cross-sectional schematic diagram of the bottom surface fixed support in a specific embodiment of the present invention;

[0045] Figure 5 This is a cross-sectional schematic diagram of the bottom unidirectional sliding support in a specific embodiment of the present invention;

[0046] Figure 6 This is a cross-sectional schematic diagram of the bidirectional sliding support in a specific embodiment of the present invention;

[0047] Figure 7 This is a cross-sectional schematic diagram of the top surface fixed support in a specific embodiment of the present invention;

[0048] Figure 8 This is a cross-sectional schematic diagram of the top surface unidirectional sliding support in a specific embodiment of the present invention.

[0049] The attached diagram shows the markings and corresponding component names:

[0050] 1-Guide plate body, 2-Bottom surface fixed support, 3-Bottom surface one-way sliding support, 4-Two-way sliding support, 5-Top surface fixed support, 6-Top surface one-way sliding support;

[0051] 11-First connecting plate, 12-Second connecting plate, 13-Third connecting plate, 14-Fourth connecting plate, 15-Fifth connecting plate;

[0052] 21-First adjusting pad, 22-Fixed pot-type rubber support, 23-First bolt, 24-First spring washer, 25-First flat washer, 26-Second adjusting pad, 27-First mounting plate, 28-First embedded steel plate, 29-Second bolt, 210-First nut;

[0053] 31-Third adjusting pad, 32-One-way sliding pot rubber support, 33-Third bolt, 34-Second spring washer, 35-Second flat washer, 36-Fourth adjusting pad, 37-Second mounting plate, 38-Second embedded steel plate, 39-Fourth bolt, 310-Second nut;

[0054] 41-Fifth adjusting pad, 42-Two-way sliding pot rubber support, 43-Fifth bolt, 44-Third spring washer, 45-Third flat washer, 46-Sixth adjusting pad, 47-Third mounting plate, 48-Third embedded steel plate, 49-Sixth bolt, 410-Third nut;

[0055] 51-Seventh adjusting shim, 52-Cylindrical guide sleeve, 53-Seventh bolt, 54-Fourth spring washer, 55-Fourth flat washer, 56-Cylindrical guide shaft seat, 57-Eighth adjusting shim, 58-Fourth mounting plate, 59-Fourth embedded steel plate, 510-Guide hole, 511-Guide shaft;

[0056] 61-Ninth adjusting pad, 62-Sliding guide plate seat, 63-Eighth bolt, 64-Fifth spring washer, 65-Fifth flat washer, 66-Sliding guide groove seat, 67-Tenth adjusting pad, 68-Fifth mounting plate, 69-Fifth embedded steel plate, 610-Guide groove, 611-Guide plate;

[0057] A - Center point of the bottom fixed support, B - Center point of the bottom unidirectional sliding support, C - Center point of the top fixed support, D - Center point of the top unidirectional sliding support. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0059] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0060] Example 1:

[0061] like Figures 1 to 3 The diagram illustrates a large low-speed wind tunnel corner guide vane, comprising a guide vane body 1. The bottom surface of the guide vane body 1 is provided with a bottom surface fixed support 2 and a bottom surface one-way sliding support 3. The top surface of the guide vane body 1 is provided with a top surface fixed support 5 and a top surface one-way sliding support 6. The bottom surface one-way sliding support 3 includes a first fixed part mounted on the bottom wall and a first movable part mounted on the bottom surface of the guide vane body 1. The first movable part is movable relative to the first fixed part along a first direction, which is parallel to the angle between the bottom surface fixed support 2 and the bottom surface one-way sliding support 3. The first connecting line between the top surface fixed support 5 and the top surface unidirectional sliding support 6 includes a second fixed part installed on the top wall and a second movable part installed on the top surface of the guide vane body 1. The second movable part can move vertically relative to the second fixed part. The top surface unidirectional sliding support 6 includes a third fixed part installed on the top wall and a third movable part installed on the top surface of the guide vane body 1. The third movable part can move vertically and in a second direction relative to the third fixed part. The second direction is parallel to the second connecting line between the top surface fixed support 5 and the top surface unidirectional sliding support 6.

[0062] In some embodiments, the bottom fixed support, the bottom one-way sliding support, the top fixed support, and the top one-way sliding support are positioned at locations with greater loads, i.e., where the curvature of the guide vane body is greater, for example, near the middle section of the arc on the bottom or top surface, to give the guide vane body greater rigidity. In other embodiments, the bottom fixed support, the bottom one-way sliding support, the top fixed support, and the top one-way sliding support are positioned at locations with less loads, i.e., where the curvature of the guide vane body is smaller, for example, near the ends of the arc on the bottom or top surface, to allow the guide vane body to better release thermal deformation in the length direction.

[0063] In some preferred embodiments, the third connecting line between the bottom fixed support 2 and the top fixed support 5, and the fourth connecting line between the bottom one-way sliding support 3 and the top one-way sliding support 6 are both perpendicular to the horizontal plane.

[0064] In some preferred embodiments, such as Figure 2 and Figure 3 As shown, the center point A of the bottom fixed support 2 and the center point B of the bottom one-way sliding support 3 are located on the first middle arc line of the bottom surface of the guide vane body 1; the center point C of the top fixed support 5 and the center point D of the top one-way sliding support 6 are located on the second middle arc line of the top surface of the guide vane body 1.

[0065] In some preferred embodiments, along the extension direction of the first middle arc, the length between the center point of the bottom fixed support 2 and the first end of the first middle arc is 1 / 5 to 2 / 5 of the length of the first middle arc, and the length between the center point of the bottom one-way sliding support 3 and the first end is 3 / 5 to 4 / 5 of the length of the first middle arc; along the extension direction of the second middle arc, the length between the center point of the top fixed support 5 and the second end of the second middle arc is 1 / 5 to 2 / 5 of the length of the second middle arc, and the length between the center point of the top one-way sliding support 6 and the second end is 3 / 5 to 4 / 5 of the length of the second middle arc.

[0066] In this embodiment, by setting the positions of the four support points, the stiffness and thermal deformation coordination of the guide vane body can be effectively balanced by the cooperation of the fixed support and the unidirectional sliding support, thereby better coping with the high-frequency vibration and dynamic aerodynamic load caused by the high-speed airflow in the wind tunnel.

[0067] In one or more embodiments, the length between the starting end of the middle arc and the center point of the fixed support is 1 / 5 to 1 / 3 of the total length of the middle arc, and the length between the starting end of the middle arc and the center point of the unidirectional sliding support is 2 / 3 to 4 / 5 of the total length of the middle arc.

[0068] Example 2:

[0069] Based on the above embodiments, such as Figure 4 and Figure 5 As shown, the bottom fixed support 2 includes a fixed basin-type rubber support 22. The upper support plate of the fixed basin-type rubber support 22 is connected to the first connecting plate 11 installed at the bottom of the guide vane body 1, and the lower support plate of the fixed basin-type rubber support 22 is connected to the first mounting plate 27 installed on the bottom wall. The bottom one-way sliding support 3 includes a one-way sliding basin-type rubber support 32. The upper support plate of the one-way sliding basin-type rubber support 32 serves as a first moving part and is connected to the second connecting plate 12 installed at the bottom of the guide vane body 1. The lower support plate of the one-way sliding basin-type rubber support 32 serves as a first fixed part and is connected to the second mounting plate 37 installed on the bottom wall.

[0070] In some preferred embodiments, such as Figure 4As shown, a first adjusting shim 21 is provided between the fixed pot-type rubber support 22 and the first connecting plate 11. The upper part of the fixed pot-type rubber support 22 is fixedly connected to the first connecting plate 11 by a second bolt 29, a first spring washer 24, a first flat washer 25, and a first nut 210. A second adjusting shim 26 is also provided between the fixed pot-type rubber support 22 and the first mounting plate 27. The first mounting plate 27 is welded to a first embedded steel plate 28 embedded in the bottom wall. The lower part of the fixed pot-type rubber support 22 is fixedly connected to the first mounting plate 27 by a first bolt 23, a first spring washer 24, and a first flat washer 25.

[0071] In some preferred embodiments, such as Figure 5 As shown, a third adjusting shim 31 is provided between the one-way sliding pot-type rubber support 32 and the second connecting plate 12. The upper part of the one-way sliding pot-type rubber support 32 is fixedly connected to the second connecting plate 12 by a fourth bolt 39, a second spring washer 34, a second flat washer 35, and a second nut 310. A fourth adjusting shim 36 is also provided between the one-way sliding pot-type rubber support 32 and the second mounting plate 37. The second mounting plate 37 is welded to a second embedded steel plate 38 embedded in the bottom wall. The lower part of the one-way sliding pot-type rubber support 32 is fixedly connected to the second mounting plate 37 by a third bolt 33, a second spring washer 34, and a second flat washer 35.

[0072] Example 3:

[0073] Based on the above embodiments, such as Figure 7 and Figure 8 As shown, the top surface fixed support 5 includes a cylindrical guide sleeve 52 and a cylindrical guide shaft seat 56. The cylindrical guide sleeve 52 is provided with a guide hole 510, and the cylindrical guide shaft seat 56 is provided with a guide shaft 511 that can move along the guide hole 510. The cylindrical guide shaft seat 56 is connected as a second fixed part to a fourth mounting plate 58 installed on the top wall, and the cylindrical guide sleeve 52 is connected as a second movable part to a fourth connecting plate 14 installed on the top of the guide vane body 1; or the cylindrical guide sleeve 52 is connected as a second fixed part to a fourth mounting plate 58 installed on the top wall, and the cylindrical guide shaft seat 56 is connected as a second movable part to a fourth connecting plate 14 installed on the top of the guide vane body 1.

[0074] The top surface unidirectional sliding support 6 includes a sliding guide groove seat 66 and a sliding guide plate seat 62. The sliding guide groove seat 66 is provided with a guide groove 610, and the sliding guide plate seat 62 is provided with a guide plate 611 that can move along the guide groove 610. The sliding guide groove seat 66 is connected as a third fixed part to a fifth mounting plate 68 installed on the top wall, and the sliding guide plate seat 62 is connected as a third moving part to a fifth connecting plate 15 installed on the top of the guide vane body 1. Alternatively, the sliding guide plate seat 62 is connected as a third fixed part to a fifth mounting plate 68 installed on the top wall, and the sliding guide groove seat 66 is connected as a third moving part to a fifth connecting plate 15 installed on the top of the guide vane body 1.

[0075] In some preferred embodiments, such as Figure 7 As shown, a seventh adjusting shim 51 is provided between the cylindrical guide sleeve 52 and the fourth connecting plate 14. The cylindrical guide sleeve 52 is fixedly connected to the fourth connecting plate 14 by a seventh bolt 53, a fourth spring washer 54, and a fourth flat washer 55. An eighth adjusting shim 57 is also provided between the cylindrical guide shaft seat 56 and the fourth mounting plate 58. The fourth mounting plate 58 is welded to a fourth embedded steel plate 59 embedded in the top wall. The cylindrical guide shaft seat 56 is fixedly connected to the fourth mounting plate 58 by a seventh bolt 53, a fourth spring washer 54, and a fourth flat washer 55.

[0076] In some preferred embodiments, such as Figure 8 As shown, a ninth adjusting shim 61 is provided between the sliding guide plate seat 62 and the fifth connecting plate 15. The sliding guide plate seat 62 is fixedly connected to the fifth connecting plate 15 by an eighth bolt 63, a fifth spring washer 64, and a fifth flat washer 65. A tenth adjusting shim 67 is also provided between the sliding guide groove seat 66 and the fifth mounting plate 68. The fifth mounting plate 68 is welded to the fifth embedded steel plate 69 embedded in the top wall. The sliding guide groove seat 66 is fixedly connected to the fifth mounting plate 68 by an eighth bolt 63, a fifth spring washer 64, and a fifth flat washer 65.

[0077] Example 4:

[0078] Based on the above embodiments, such as Figure 6 As shown, at least one bidirectional sliding support 4 is also provided on the bottom surface of the guide vane body 1. The bidirectional sliding support 4 includes a bidirectional sliding basin rubber support 42. The upper support plate of the bidirectional sliding basin rubber support 42 is connected to the third connecting plate 13 installed at the bottom of the guide vane body 1, and the lower support plate of the bidirectional sliding basin rubber support 42 is connected to the third mounting plate 47 installed on the bottom wall.

[0079] In some preferred embodiments, the center point of the bidirectional sliding support 4 is located on the first middle arc line of the bottom surface of the guide vane body 1.

[0080] In some embodiments, the bidirectional sliding support can be disposed between the bottom fixed support and the bottom unidirectional sliding support, or between the first end of the guide vane body and the bottom fixed support, or between the second end of the guide vane body and the bottom unidirectional sliding support.

[0081] In some preferred embodiments, such as Figure 2 As shown, the bottom surface of the guide vane body is provided with at least three bidirectional sliding supports, one of which is located near the center of the first arc, and the other two are located near the two ends of the first arc.

[0082] In some preferred embodiments, such as Figure 6 As shown, a fifth adjusting shim 41 is provided between the bidirectional sliding pot-type rubber bearing 42 and the third connecting plate 13. The upper part of the bidirectional sliding pot-type rubber bearing 42 is fixedly connected to the third connecting plate 13 by a sixth bolt 49, a third spring washer 44, a third flat washer 45, and a third nut 410. A sixth adjusting shim 46 is also provided between the bidirectional sliding pot-type rubber bearing 42 and the third mounting plate 47. The third mounting plate 47 is welded to a third embedded steel plate 48 embedded in the bottom wall. The lower part of the bidirectional sliding pot-type rubber bearing 42 is fixedly connected to the third mounting plate 47 by a fifth bolt 43, a third spring washer 44, and a third flat washer 45.

[0083] The terms "first," "second," etc., used in this invention (e.g., first connecting plate, second connecting plate, first adjusting pad, second adjusting pad, etc.) are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" used in this invention, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0084] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A large low-speed wind tunnel corner guide vane, comprising a guide vane body (1), characterized in that, The bottom surface of the guide vane body (1) is provided with a bottom surface fixed support (2) and a bottom surface one-way sliding support (3), and the top surface of the guide vane body (1) is provided with a top surface fixed support (5) and a top surface one-way sliding support (6). The bottom one-way sliding support (3) includes a first fixed part installed on the bottom wall and a first moving part installed on the bottom surface of the guide vane body (1). The first moving part can move relative to the first fixed part along a first direction, which is parallel to the first connecting line between the bottom fixed support (2) and the bottom one-way sliding support (3). The top surface fixed support (5) includes a second fixed part installed on the top wall and a second movable part installed on the top surface of the guide vane body (1). The second movable part can move vertically relative to the second fixed part. The top surface one-way sliding support (6) includes a third fixed part installed on the top wall and a third moving part installed on the top surface of the guide vane body (1). The third moving part can move relative to the third fixed part in a vertical direction and a second direction. The second direction is parallel to the second connecting line between the top surface fixed support (5) and the top surface one-way sliding support (6).

2. A large low-speed wind tunnel corner guide vane according to claim 1, characterized in that, The third connecting line between the bottom fixed support (2) and the top fixed support (5), and the fourth connecting line between the bottom one-way sliding support (3) and the top one-way sliding support (6) are both perpendicular to the horizontal plane.

3. A large low-speed wind tunnel corner guide vane according to claim 1, characterized in that, The center point of the bottom fixed support (2) and the center point of the bottom one-way sliding support (3) are located on the first middle arc line of the bottom surface of the guide vane body (1); the center point of the top fixed support (5) and the center point of the top one-way sliding support (6) are located on the second middle arc line of the top surface of the guide vane body (1).

4. A large low-speed wind tunnel corner guide vane according to claim 3, characterized in that, Along the extension direction of the first middle arc, the length between the center point of the bottom fixed support (2) and the first end of the first middle arc is 1 / 5 to 2 / 5 of the length of the first middle arc, and the length between the center point of the bottom one-way sliding support (3) and the first end is 3 / 5 to 4 / 5 of the length of the first middle arc. Along the extension direction of the second middle arc, the length between the center point of the top surface fixed support (5) and the second end of the second middle arc is 1 / 5 to 2 / 5 of the length of the second middle arc, and the length between the center point of the top surface unidirectional sliding support (6) and the second end is 3 / 5 to 4 / 5 of the length of the second middle arc.

5. A large low-speed wind tunnel corner guide vane according to any one of claims 1 to 4, characterized in that, The bottom fixed support (2) includes a fixed basin rubber support (22), the upper support plate of the fixed basin rubber support (22) is connected to the first connecting plate (11) installed at the bottom of the guide vane body (1), and the lower support plate of the fixed basin rubber support (22) is connected to the first mounting plate (27) installed on the bottom wall.

6. A large low-speed wind tunnel corner guide vane according to any one of claims 1 to 4, characterized in that, The bottom unidirectional sliding support (3) includes a unidirectional sliding basin rubber support (32). The upper support plate of the unidirectional sliding basin rubber support (32) serves as a first moving part and is connected to a second connecting plate (12) installed at the bottom of the guide vane body (1). The lower support plate of the unidirectional sliding basin rubber support (32) serves as a first fixing part and is connected to a second mounting plate (37) installed on the bottom wall.

7. A large low-speed wind tunnel corner guide vane according to any one of claims 1 to 4, characterized in that, The top surface fixed support (5) includes a cylindrical guide sleeve (52) and a cylindrical guide shaft seat (56). The cylindrical guide sleeve (52) is provided with a guide hole (510), and the cylindrical guide shaft seat (56) is provided with a guide shaft (511) that can move along the guide hole (510). Wherein, the cylindrical guide shaft seat (56) is connected as a second fixed part to the fourth mounting plate (58) installed on the top wall, and the cylindrical guide sleeve (52) is connected as a second moving part to the fourth connecting plate (14) installed on the top of the guide vane body (1); or The cylindrical guide sleeve (52) is connected as a second fixed part to the fourth mounting plate (58) installed on the top wall, and the cylindrical guide shaft (56) is connected as a second moving part to the fourth connecting plate (14) installed on the top of the guide vane body (1).

8. A large low-speed wind tunnel corner guide vane according to any one of claims 1 to 4, characterized in that, The top surface one-way sliding support (6) includes a sliding guide groove seat (66) and a sliding guide plate seat (62). The sliding guide groove seat (66) is provided with a guide groove (610), and the sliding guide plate seat (62) is provided with a guide plate (611) that can move along the guide groove (610). Wherein, the sliding guide groove seat (66) is connected as the third fixed part to the fifth mounting plate (68) installed on the top wall, and the sliding guide plate seat (62) is connected as the third moving part to the fifth connecting plate (15) installed on the top of the guide vane body (1); or The sliding guide plate seat (62) is connected as the third fixed part to the fifth mounting plate (68) installed on the top wall, and the sliding guide groove seat (66) is connected as the third moving part to the fifth connecting plate (15) installed on the top of the guide plate body (1).

9. A large low-speed wind tunnel corner guide vane according to any one of claims 1 to 4, characterized in that, At least one bidirectional sliding support (4) is also provided on the bottom surface of the guide vane body (1). The bidirectional sliding support (4) includes a bidirectional sliding basin rubber support (42). The upper support plate of the bidirectional sliding basin rubber support (42) is connected to a third connecting plate (13) installed at the bottom of the guide vane body (1), and the lower support plate of the bidirectional sliding basin rubber support (42) is connected to a third mounting plate (47) installed on the bottom wall.

10. A large low-speed wind tunnel corner guide vane according to claim 9, characterized in that, The center point of the bidirectional sliding support (4) is located on the first middle arc line of the bottom surface of the guide vane body (1).

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