Deformation structure for cryogenic wind tunnel cabin wall

Abstract

The utility model relates to a deformation structure for a cryogenic wind tunnel cabin wall, and the structure comprises a compensation plate, the middle part of the compensation plate is configured to be U-shaped, the protruding part of the U-shaped structure faces the external environment space, the end part of the compensation plate and the cabin wall are provided with a plurality of bolt holes, and the bolt holes are distributed at equal intervals in a wave manner. The compensation plate and the cabin wall are connected through a bolt hole penetrating through the cabin wall and a bolt of a bolt hole of the compensation plate, and a metal gasket is installed between the compensation plate and the cabin wall. The two ends of the compensation plate are connected with the two adjacent cabin walls through bolts and metal gaskets, the middle of the compensation plate is of a U shape and used for telescopic compensation of the cabin walls, in other words, when the cabin expands with heat and contracts with cold, the U shape can provide certain compensation for the perimeter of the cabin, normal use of the cabin is guaranteed, and the compensation structure is convenient to machine and install.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wind tunnel test cabin wall, in particular to a deformation structure for a cryogenic wind tunnel cabin wall. BACKGROUND

[0002] Wind tunnel test is widely used in model test of missiles, hypersonic vehicles and space-airplane, and is one of important ground test equipment in the field of aerospace. The construction of large wind tunnel cabin wall is large in size and requires strict internal environment. The test cabin is the place for test models and is an important part of the wind tunnel, which needs to meet the needs of different test models and test tasks.

[0003] The existing wind tunnel test cabin wall is built by sheet metal, and the deformation of the test cabin wall during the test needs to be compensated by a structure. In particular, the deformation of the cabin wall of a special cryogenic large continuous transonic wind tunnel is more. Therefore, it is urgent to design a deformation structure to meet the needs of building the cabin wall of the special cryogenic large continuous transonic wind tunnel. CONTENT OF THE INVENTION

[0004] In order to overcome the problem that the existing wind tunnel test cabin wall is built by sheet metal and the deformation of the test cabin wall during the test needs to be compensated by a structure, the present application provides a deformation structure for a cryogenic wind tunnel cabin wall.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a deformation structure for a cryogenic wind tunnel cabin wall, comprising: a compensation plate, the middle part of the compensation plate is configured as a U-shaped, the convex part of the U-shaped is directed to the external environment space, the end part of the compensation plate and the cabin wall are both provided with a plurality of bolt holes, the plurality of bolt holes are arranged at equal intervals in a wave shape, the compensation plate and the cabin wall are connected by bolts penetrating the bolt holes of the cabin wall and the bolt holes of the compensation plate, and a metal gasket is installed between the compensation plate and the cabin wall.

[0006] Optionally, the cabin wall comprises an inner cabin wall and an outer cabin wall connected with the inner cabin wall, the two ends of the compensation plate are bent outward for connection with the intersection of the inner cabin wall and the outer cabin wall, and the inner side of the two ends of the compensation plate is welded to the inner cabin wall.

[0007] Optionally, the deformation structure further comprises two metal reinforcing plates, the metal reinforcing plates are arranged at the bent parts of the end parts of the compensation plate and away from the side of the metal gasket.

[0008] Optionally, the gap between the metal gasket and the cabin wall and the compensation plate is filled with butyl rubber.

[0009] The technical scheme provided by the embodiment of the present disclosure can include the following beneficial effects:

[0010] The two ends of the compensation plate are connected with the adjacent two cabin body walls through bolts and metal gaskets, the middle part of the compensation plate is configured as a U-shaped structure, and the U-shaped structure is used for expansion and contraction compensation of the cabin body wall, that is, when the cabin body expands or shrinks due to heat, the U-shaped structure can provide a certain compensation amount for the circumference of the cabin body, so as to ensure normal use of the cabin body, and the compensation structure is convenient for processing and installation. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a use schematic diagram of a deformation structure for a cabin body wall of a cryogenic wind tunnel according to an exemplary embodiment of the present disclosure.

[0012] BRIEF DESCRIPTION OF DRAWINGS

[0013] 1, compensation plate; 3, metal gasket; 4, butyl rubber; 5, bolt; 6, metal reinforcing plate; 7, inner cabin wall; 8, outer cabin wall. DETAILED DESCRIPTION

[0014] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0015] Please refer to Figure 1 , the present disclosure provides a deformation structure for a cabin body wall of a cryogenic wind tunnel, which comprises a compensation plate 1, the middle part of the compensation plate 1 is configured as a U-shaped structure, the convex part of the U-shaped structure faces the external environment space, so as to ensure that the space inside the cabin body is relatively large. Of course, in other embodiments, the convex part of the U-shaped structure faces the internal environment space. The end part of the compensation plate 1 and the cabin body wall are both provided with a plurality of bolt holes, the plurality of bolt holes are arranged at equal intervals in a wave shape, the compensation plate 1 and the cabin body wall are connected through the bolts 5 penetrating the bolt holes of the cabin body wall and the bolt holes of the compensation plate 1, and the metal gasket 3 is installed between the compensation plate 1 and the cabin body wall, and the metal gasket 3 is used to strengthen the stable connection between the cabin body wall and the compensation plate 1.

[0016] It can be understood that the cabin body wall of the special cryogenic experiment is special in environment. The inside of the cabin body wall needs to be completely dry and sealed, and the inside of the cabin body wall needs to reach deep cold. The cabin body wall is built with a metal compensation plate 1 outside. Because of the large temperature difference, the shape of the cabin body wall will change in length, width and height. The frame built by ordinary civil engineering and the compensation plate 1 cannot change in shape. Now the deformation joint structure is added between the cabin body walls, so that the size of the cabin body wall can change with the demand of the experimental environment. The two ends of the compensation plate 1 are connected with the adjacent two cabin body walls through the bolts 5 and the metal gaskets 3, the middle part of the compensation plate 1 is configured as a U-shaped structure, and the U-shaped structure is used for expansion and contraction compensation of the cabin body wall, that is, when the cabin body expands or shrinks due to heat, the U-shaped structure can provide a certain compensation amount for the circumference of the cabin body, so as to ensure normal use of the cabin body, and the compensation structure is convenient for processing and installation.

[0017] In an embodiment, please refer to Figure 1, the cabin wall comprises an inner cabin wall 7 and an outer cabin wall 8 connected with the inner cabin wall 7, the two ends of the compensation plate 1 are bent outwardly for connecting with the intersection of the inner cabin wall 7 and the outer cabin wall 8, and the inner side of the two ends of the compensation plate 1 is welded with the inner cabin wall 7. By designing a deformation structure called "compensation plate 1", the deformation problem of the cabin wall of the cryogenic wind tunnel under different temperatures is effectively solved. The two ends of the compensation plate 1 are connected with the inner cabin wall 7 and the outer cabin wall 8 respectively, and the firm connection is realized through welding. When the cabin wall is heated and expanded or cooled and contracted, the compensation plate 1 can deform flexibly, thereby absorbing and balancing the stress caused by thermal expansion and cold contraction, ensuring the stability of the overall shape of the cabin wall and avoiding potential safety hazards.

[0018] In an embodiment, please refer to Figure 1 The deformation structure further comprises two metal reinforcing plates 6 arranged at the bent portions of the ends of the compensation plate 1 and away from the side of the metal gasket 3, which effectively enhances the pressure resistance and stability of the wind tunnel cabin wall when it is bent, and improves the overall reliability and service life.

[0019] In an embodiment, please refer to Figure 1 The gap between the metal gasket 3 and the cabin wall and the compensation plate 1 is filled with butyl rubber 4, which plays a sealing role, effectively solving the deformation problem of the cabin wall of the cryogenic wind tunnel during temperature change, and ensuring the sealing property and structural stability of the cabin wall.

[0020] The present application is described by way of examples, and those skilled in the art know that various changes or equivalent replacements can be made to these features and examples without departing from the spirit and scope of the present application. In addition, under the guidance of the present application, these features and examples can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the specific examples disclosed herein, and all examples falling within the scope of the claims of the present application are within the protection scope of the present application.

Claims

1. A deformable structure for the wall of a cryogenic wind tunnel, characterized in that, Includes a compensation plate (1), the middle part of which is U-shaped, with the protruding part of the U-shape facing the external environment. The ends of the compensation plate (1) and the cabin wall are provided with multiple bolt holes, which are arranged in a wave pattern at equal intervals. The compensation plate (1) and the cabin wall are connected by bolts (5) that pass through the bolt holes in the cabin wall and the bolt holes in the compensation plate (1). A metal gasket (3) is installed between the compensation plate (1) and the cabin wall.

2. The deformable structure for the wall of a cryogenic wind tunnel according to claim 1, characterized in that, The bulkhead includes an inner bulkhead (7) and an outer bulkhead (8) connected to the inner bulkhead (7). The two ends of the compensation plate (1) are bent outward for connection with the junction of the inner bulkhead (7) and the outer bulkhead (8). The inner sides of the two ends of the compensation plate (1) are welded to the inner bulkhead (7).

3. The deformable structure for the wall of a cryogenic wind tunnel according to claim 2, characterized in that, The deformable structure also includes two metal reinforcing plates (6), which are located at the bend of the end of the compensation plate (1) and on the side away from the metal gasket (3).

4. The deformable structure for the wall of a cryogenic wind tunnel according to claim 1, characterized in that, The gap between the metal gasket (3) and the cabin wall and the compensation plate (1) is filled with butyl rubber (4).

Images