Wind tunnel wind pressure adjusting equipment

Abstract

The utility model relates to the technical field of wind tunnels, and discloses wind tunnel wind pressure adjusting equipment which comprises a shell, a fixing plate is arranged at the right end of the inner wall of the shell, a fan is fixedly connected to the middle of the fixing plate, and first fixing lugs are fixedly connected to the upper side and the lower side of the fixing plate. The outer wall of the first fixing lug is tightly attached to the right end of the shell in a matched mode, a flow equalizing plate is fixedly connected to the inner wall of the left end of the shell, diffusion openings are formed in the front side and the rear side of the left end of the shell correspondingly, and pipelines are fixedly connected to the positions, corresponding to the exteriors of the diffusion openings, of the front side and the rear side of the shell correspondingly. According to the utility model, the electric push rod drives the push plate to move leftwards so as to drive the push rod to move and push the cover plate to rotate, so that air can enter the shell through the pipeline and the diffusion port so as to increase the air flow in the air duct, and the filter plate can filter the entered air, thereby preventing sand from entering the air duct to influence normal operation and experiment implementation.

Description

Technical Field

[0001] The utility model relates to the technical field of wind tunnels, in particular to a wind tunnel wind pressure regulating device. Background Art

[0002] A wind tunnel is a tool for studying aerodynamics. It is a pipe-shaped experimental device that can artificially generate and control airflow, measure the effects of airflow on objects, and observe physical phenomena. It is used to simulate the flow of gas around aircraft or objects. It mainly consists of a tunnel, a drive system, and a measurement and control system. It is the most commonly used and effective tool for conducting aerodynamic experiments.

[0003] After searching, the announcement number CN220437714U is a wind tunnel pressure regulating device, which includes a boosting section, a rectifying section, a heating section and a frame arranged at the bottom of the shell, which are connected in sequence. The boosting section is composed of an active air inlet, a passive air inlet, a sealing gasket and a transition piece. The active air inlet is arranged on one side of the bottom of the shell. The active air inlet is used to provide gaseous fluid (wind) power. The passive air inlet is arranged on one side of the shell adjacent to the active air inlet. The sealing gasket is connected to the active air inlet. The sealing gasket is used to seal between the two parts to prevent leakage to the outside. The transition piece connects the sealing gasket, the passive air inlet and the active air inlet, and the transition piece is used to transmit the gaseous fluid (wind) to the subsequent part. A driven diffuser ring is provided at the passive air inlet, and an upturned trumpet is formed between the driven diffuser ring and the transition piece. The utility model belongs to the technical field of wind tunnel test supporting equipment, and specifically provides a wind tunnel pressure regulating device with the function of enhancing wind pressure.

[0004] Based on the above patent, the background technology thereof mentioned that there is no diffuser, and sand is easily introduced into the wind tunnel entrance, which seriously affects the normal operation and implementation of the experiment. In response to this technical problem, the present application proposes a wind tunnel pressure regulating device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a wind tunnel pressure regulating device, which can filter the air passing through the wind tunnel, thereby preventing sand and gravel from affecting the operation of the device.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A wind tunnel pressure regulating device comprises a shell, a fixing plate is provided at the right end of the inner wall of the shell, a fan is fixedly connected to the middle of the fixing plate, a first fixing ear is fixedly connected to the upper and lower sides of the fixing plate, the outer wall of the first fixing ear is tightly fitted with the right end of the shell, a flow equalizing plate is fixedly connected to the inner wall of the left end of the shell, a pressure diffuser is provided on the front and rear sides of the left end of the shell, pipes are fixedly connected to the outside of the corresponding pressure diffusers on the front and rear sides of the shell, the opposite ends of the pipes are rotatably connected to a cover plate, and a filter assembly is provided at the left end of the fixing plate.

[0008] Furthermore, a movable frame is provided at the top of the left end of the shell, an opening is provided in the middle of the movable frame, the upper and lower ends of the left side of the movable frame are fixedly connected with splints, the inner sides of the right ends of the splints are slidably connected with a movable plate, the inner side of the movable plate is fixedly connected with a filter plate, the upper side of the upper splint is threadedly connected with a first fastener, and the lower end of the first fastener is threadedly connected to the upper side of the movable plate.

[0009] Furthermore, both upper and lower ends of the right side of the movable frame are fixedly connected to limit rods, and the right end of the limit rod is passed through the interior of the shell.

[0010] Furthermore, a second fixing ear is fixedly connected to the upper side of the movable frame, and the right end of the second fixing ear is in close contact with the upper side of the shell.

[0011] Furthermore, a second fastener is provided at the right end of the second fixing ear, and a lower end of the second fastener is threadedly connected to the upper side of the housing.

[0012] Furthermore, a U-shaped plate is fixedly connected to the upper side of the shell, and an electric push rod is fixedly connected to the middle part of the U-shaped plate.

[0013] Furthermore, the left end of the electric push rod is fixedly connected to a push plate.

[0014] Furthermore, both the front and rear sides of the left side of the push plate are rotatably connected to push rods, and the left ends of the push rods are rotatably connected to the upper side of the cover plate.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the present invention, the electric push rod drives the push plate to move to the left, thereby driving the push rod to move and pushing the cover plate to rotate, so that air can enter the shell through the pipe and the diffuser port, thereby increasing the air flow in the air duct and thus increasing the wind pressure in the air duct.

[0017] 2. In the present invention, the filter plate provided can filter the incoming air, thereby preventing sand and gravel from entering the air duct and affecting normal operation and the implementation of the experiment. The equalizing plate provided can make the air entering the shell move evenly to the right. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of a wind tunnel wind pressure regulating device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of a flow balancing plate of a wind tunnel pressure regulating device proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of a limit rod of a wind tunnel wind pressure regulating device proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of a filter plate of a wind tunnel wind pressure regulating device proposed by the utility model.

[0022] Legend:

[0023] 1. Casing; 2. Fixing plate; 3. Fan; 4. First fixing ear; 5. Flow equalizing plate; 6. Diffuser; 7. Pipe; 8. Cover plate; 9. Movable frame; 10. Opening; 11. Clamping plate; 12. Movable plate; 13. Filter plate; 14. First fastener; 15. Limit rod; 16. Second fixing ear; 17. Second fastener; 18. U-shaped plate; 19. Electric push rod; 20. Push plate; 21. Push rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 3 The utility model provides an embodiment of a wind tunnel pressure regulating device, comprising a shell 1, a fixing plate 2 is provided at the right end of the inner wall of the shell 1, a fan 3 is fixedly connected to the middle of the fixing plate 2, a first fixing ear 4 is fixedly connected to the upper and lower sides of the fixing plate 2, the outer wall of the first fixing ear 4 is tightly fitted with the right end of the shell 1, a flow equalizing plate 5 is fixedly connected to the inner wall of the left end of the shell 1, a pressure diffuser 6 is opened on the front and rear sides of the left end of the shell 1, and a pipe 7 is fixedly connected to the outside of the pressure diffuser 6 on the front and rear sides of the shell 1, and the opposite ends of the pipe 7 are rotatably connected to a cover plate 8;

[0026] The fan 3 is provided to drive the air flow, enter from the left end of the shell 1, and pass through the right end of the shell 1. The flow equalizer 5 is provided to make the flowing air move evenly to the right. By rotating the cover 8 and opening the pipes 7 on both sides, air can enter the device from the pipes 7 and the diffuser 6 on both sides, thereby increasing the air volume entering the wind tunnel and thus increasing the wind pressure in the wind tunnel.

[0027] Reference Figure 1 and Figure 3 , a movable frame 9 is provided at the top of the left end of the shell 1, and an opening 10 is opened in the middle of the movable frame 9. The upper and lower ends of the left side of the movable frame 9 are fixedly connected with a splint 11, and the inner side of the right end of the splint 11 is slidably connected with a movable plate 12. The inner side of the movable plate 12 is fixedly connected with a filter plate 13. The upper side of the upper splint 11 is threadedly connected with a first fastener 14, and the lower end of the first fastener 14 is threadedly connected to the upper side of the movable plate 12. The upper and lower ends of the right side of the movable frame 9 are fixedly connected with a limit rod 15, and the right end of the limit rod 15 is passed through the interior of the shell 1. The upper side of the movable frame 9 is fixedly connected with a second fixing ear 16, and the right end of the second fixing ear 16 is in close contact with the upper side of the shell 1. The right end of the second fixing ear 16 is provided with a second fastener 17, and the lower end of the second fastener 17 is threadedly connected to the upper side of the shell 1;

[0028] The filter plate 13 provided can filter the air flowing through it, and the movable frame 9 provided can move to the left through the limit rod 15, driving the splint 11, the movable plate 12 and the filter plate 13 to be exposed from the outer shell 1, thereby facilitating the cleaning and replacement of the filter plate 13. The outer shell 1 can be fixed by cooperating with the second fastener 17 and the second fixing ear 16 provided.

[0029] Reference Figure 1 , a U-shaped plate 18 is fixedly connected to the upper side of the housing 1, an electric push rod 19 is fixedly connected to the middle part of the U-shaped plate 18, the left end of the electric push rod 19 is fixedly connected to the push plate 20, and the left front and rear sides of the push plate 20 are rotatably connected to push rods 21, and the left ends of the push rods 21 are respectively rotatably connected to the upper side of the cover plate 8;

[0030] The electric push rod 19 drives the push plate 20 to move leftward, thereby driving the push rod 21 to move, pushing the cover plate 8 to rotate, so that air can enter the housing 1 through the pipe 7 and the diffuser 6, thereby increasing the air flow in the air duct and thus increasing the wind pressure in the air duct.

[0031] Working principle: The fan 3 is set up to drive the air flow. The air enters from the opening 10, passes through the filter plate 13 and the equalizer plate 5 at one time, and flows out from the right end of the shell 1. The filter plate 13 is set up to filter the incoming air, thereby preventing sand and gravel from entering the air duct and affecting the progress of the experiment. The equalizer plate 5 is set up to make the incoming air move evenly to the right. The movable frame 9 is set up to drive the splint 11, the movable plate 12 and the filter plate 13 to move to the left through the limit rod 15, thereby driving the filter plate 13 to move to the left and expose it from the shell 1. The electric push rod 19 is set up to drive the push plate 20 and the push rod 21 to move to the left, thereby pushing the cover plate 8 to rotate through the push rod 21, so as to facilitate the air to pass through the diffuser 6 and the pipe 7 and enter the device.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wind tunnel pressure regulating device, comprising a housing (1), characterized in that: A fixing plate (2) is provided at the right end of the inner wall of the shell (1), a fan (3) is fixedly connected to the middle of the fixing plate (2), a first fixing ear (4) is fixedly connected to the upper and lower sides of the fixing plate (2), the outer wall of the first fixing ear (4) is tightly fitted with the right end of the shell (1), a flow equalizing plate (5) is fixedly connected to the inner wall of the left end of the shell (1), a pressure diffuser (6) is provided on the front and rear sides of the left end of the shell (1), and the outside of the pressure diffuser (6) on the front and rear sides of the shell (1) is fixedly connected to a pipe (7), and the opposite ends of the pipe (7) are rotatably connected to a cover plate (8), and a filter assembly is provided at the left end of the fixing plate (2).

2. The wind tunnel pressure regulating device according to claim 1, characterized in that: A movable frame (9) is provided at the top of the left end of the shell (1), an opening (10) is provided in the middle of the movable frame (9), the upper and lower ends of the left side of the movable frame (9) are fixedly connected with clamping plates (11), the inner side of the right end of the clamping plate (11) is slidably connected with a movable plate (12), the inner side of the movable plate (12) is fixedly connected with a filter plate (13), the upper side of the upper clamping plate (11) is threadedly connected with a first fastener (14), and the lower end of the first fastener (14) is threadedly connected to the upper side of the movable plate (12).

3. The wind tunnel pressure regulating device according to claim 2, characterized in that: The upper and lower ends of the right side of the movable frame (9) are fixedly connected to a limiting rod (15), and the right end of the limiting rod (15) is inserted into the interior of the housing (1).

4. The wind tunnel pressure regulating device according to claim 2, characterized in that: A second fixing ear (16) is fixedly connected to the upper side of the movable frame (9), and the right end of the second fixing ear (16) is in close contact with the upper side of the housing (1).

5. The wind tunnel pressure regulating device according to claim 4, characterized in that: A second fastener (17) is provided at the right end of the second fixing ear (16), and the lower end of the second fastener (17) is threadedly connected to the upper side of the housing (1).

6. The wind tunnel pressure regulating device according to claim 1, characterized in that: A U-shaped plate (18) is fixedly connected to the upper side of the housing (1), and an electric push rod (19) is fixedly connected to the middle of the U-shaped plate (18).

7. The wind tunnel pressure regulating device according to claim 6, characterized in that: The left end of the electric push rod (19) is fixedly connected with a push plate (20).

8. The wind tunnel pressure regulating device according to claim 7, characterized in that: Both the front and rear sides of the left side of the push plate (20) are rotatably connected to push rods (21), and the left ends of the push rods (21) are rotatably connected to the upper side of the cover plate (8).

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