Overall Structure of a Large Continuous Transonic Wind Tunnel System

Abstract

This invention relates to the overall structure of a large-scale continuous transonic wind tunnel system, belonging to the field of aerodynamic testing technology. It includes the wind tunnel body, a substation, a frequency converter room, a circulating water plant, an exhaust and gas supply plant, a gas storage tank area, and a test section storage and preparation room. The exhaust and gas supply plant is located above the wind tunnel body and is connected to the wind tunnel body via the gas storage tank area. The circulating water plant is located to the left of the exhaust and gas supply plant and is connected to the wind tunnel body. The frequency converter room and the substation are located to the right and upper right of the wind tunnel body, respectively, and the substation is connected to the wind tunnel body via the frequency converter room. The test section storage and preparation room is located directly below the wind tunnel body. The purpose of this invention is to solve the problem of rational layout planning for various systems in a large-scale continuous transonic wind tunnel. The layout scheme adopted in this invention improves the convenience of interaction between personnel and equipment through rational optimization and fully embodies the principle of economy.

Description

Technical Field

[0001] This invention relates to the overall structure of a large-scale continuous transonic wind tunnel system, belonging to the field of aerodynamic testing technology. Background Technology

[0002] Large continuous transonic wind tunnels are important aerodynamic testing infrastructure for the development of high-speed aircraft, especially high-speed aircraft. They provide crucial basic design data for aircraft development. Due to the complexity of this type of wind tunnel technology and the high costs of construction and operation, careful planning is often required. The testing capabilities and overall efficiency of large continuous transonic wind tunnels are also one of the key factors restricting the innovative development of aircraft. The rational layout of the various systems in the wind tunnel and the subsequent efficient operation and maintenance are extremely necessary and are important factors for the wind tunnel facilities to achieve their full potential.

[0003] Large-scale continuous transonic wind tunnels have a large footprint, high compressor drive power, large circulating water flow, and complex supply and exhaust requirements. Therefore, the layout of each system in the wind tunnel's top-level planning is particularly critical. Since each system in the wind tunnel is large-scale and functionally complex, an unreasonable layout will first and foremost result in a significant waste of land area. Large-scale continuous transonic wind tunnels consume extremely high power, roughly equivalent to the power consumption of a small city; therefore, the location of the substation will significantly impact the power supply construction, operation, and maintenance costs, as well as operational safety. The high-power drive also places high demands on cooling; the amount of circulating cooling water used is comparable to that of a typical small... The flow rates of the rivers are similar, and the circulating cooling water exhibits a severe response hysteresis effect. If the water delivery pipeline is too long, it will affect the precise control of the temperature. The air supply and exhaust system is an important auxiliary system for wind tunnel sealing and special tests. The wind tunnel has many air consumption points and complex air demand. Moreover, the selection of the air supply pipeline directly affects the friction loss. If the selection is inappropriate, it will lead to waste of equipment selection. The models used for large continuous transonic wind tunnel tests are large in size and weight. The installation of the models often requires auxiliary tools. If the test section replacement method is adopted, the efficiency of wind tunnel use can be greatly improved. This also brings up the issue of the convenience of test section replacement and model replacement.

[0004] Therefore, there is an urgent need to propose an overall structure for a large-scale continuous transonic wind tunnel system to comprehensively solve the above-mentioned technical problems under the premise of limited wind tunnel layout space. This technology combines the operating characteristics of different systems in a continuous high-speed wind tunnel and integrates, improves and innovates the layout methods of various wind tunnel systems through appropriate selection of spatial arrangement positions. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of rational layout planning for various systems in large-scale continuous transonic systems. A brief overview of the invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.

[0006] The technical solution of the present invention:

[0007] A large-scale continuous transonic wind tunnel system includes a wind tunnel body, a substation, a frequency converter room, a circulating water plant, an exhaust and gas supply plant, a gas storage tank area, and a test section storage and preparation room. The exhaust and gas supply plant is located above the wind tunnel body and is connected to the wind tunnel body through the gas storage tank area. The circulating water plant is located to the left of the exhaust and gas supply plant and is connected to the wind tunnel body. The frequency converter room and the substation are located to the right and upper right of the wind tunnel body, respectively. The substation is connected to the wind tunnel body through the frequency converter room. The test section storage and preparation room is located directly below the wind tunnel body.

[0008] Preferably, the wind tunnel body includes a test section, a high-speed diffusion section, a first corner, a first straight section, a second corner, a wind tunnel main compressor, a low-speed diffusion section, a wind tunnel heat exchanger, a third corner, a second straight section, a fourth corner, a rectifying section, a contraction section, and a nozzle section. The test section, high-speed diffusion section, first corner, first straight section, second corner, wind tunnel main compressor, low-speed diffusion section, wind tunnel heat exchanger, third corner, second straight section, fourth corner, rectifying section, contraction section, and nozzle section are connected end to end to form a closed loop. The wind tunnel heat exchanger is connected to the test section and the high-speed diffusion section through pipelines.

[0009] Preferably, the substation is directly connected to the wind tunnel's main compressor and auxiliary compressor via a cable and a frequency converter.

[0010] Preferably, the circulating water plant is connected to the wind tunnel heat exchanger via circulating water pipes.

[0011] Preferably, the circulating water plant is equipped with a circulating cooling water system, which includes an internal circulating water pump, a plate heat exchanger, a control valve, a circulating heat exchanger, and a connecting valve. The internal circulating water pump, the plate heat exchanger, the control valve, and the circulating heat exchanger are interconnected in sequence through pipelines. The outlet of the internal circulating water pump and the inlet of the control valve are connected through the connecting valve. The circulating heat exchanger is placed inside the wind tunnel.

[0012] Preferably, the gas storage tank area is connected to the gas supply equipment installed in the gas supply and exhaust plant.

[0013] Preferably, the air supply and exhaust plant is equipped with an air supply system, which includes an air intake filter, an air compressor, a dryer, and an air storage container. The air intake filter, air compressor, dryer, and air storage container are connected in sequence through air supply pipelines. At the same time, air compressor control valves are connected in parallel at both ends of the air compressor, and the air storage container is connected to the wind tunnel body through regulating valves.

[0014] Preferably, the substation is electrically connected to the circulating water plant, the gas supply and exhaust plant, the gas storage tank area, and the test section storage and test preparation room via an underground pipe gallery after passing through the frequency converter room.

[0015] The present invention has the following beneficial effects:

[0016] 1. The layout scheme adopted in this invention, under the necessary system construction requirements of large continuous transonic wind tunnels, shortens the work path for personnel operation and maintenance and improves the convenience of interaction between personnel and equipment through reasonable optimization of the layout;

[0017] 2. The layout scheme adopted in this invention fully considers the construction and operation characteristics of different systems. Through comprehensive analysis, it strives for a compact layout while taking into account the space requirements for equipment construction and operation and maintenance, reflecting the principle of economy;

[0018] 3. The layout scheme adopted in this invention fully considers the operation and control characteristics of different systems, realizes the selection of the shortest path for each system, effectively reduces the corresponding lag time of the system, and ensures the control accuracy of the system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a large-scale continuous transonic wind tunnel system.

[0020] Figure 2 This is a schematic diagram of the structure of the wind tunnel body of the present invention.

[0021] Figure 3 This is a schematic diagram of the circulating cooling water system of the present invention.

[0022] Figure 4 This is a schematic diagram of the gas supply system of the present invention.

[0023] In the diagram: 1-Wind tunnel body, 2-Substation, 3-Variable frequency drive room, 4-Circulating water plant, 5-Air supply and exhaust plant, 6-Air storage tank area, 7-Test section storage and test preparation room, 11-Test section, 12-High-speed diffusion section, 13-First corner, 14-First straight section, 15-Second corner, 16-Wind tunnel main compressor, 17-Low-speed diffusion section, 18-Wind tunnel heat exchanger, 19-Third corner, 110-Second straight section, 111-Fourth corner, 112-Rectifier section, 113-Contraction section, 114-Nozzle section, 41-Internal circulating water pump, 42-Plate heat exchanger, 43-Control valve, 44-Circulating heat exchanger, 51-Inlet filter, 52-Air compressor, 53-Dryer, 54-Air storage container, 55-Air compressor control valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0026] Specific implementation method one: Combining Figure 1-4 This embodiment describes the overall structure of a large-scale continuous transonic wind tunnel system, including the wind tunnel body 1, a substation 2, a frequency converter room 3, a circulating water plant 4, an exhaust and gas supply plant 5, a gas storage tank area 6, and a test section storage and test preparation room 7. The layout of this embodiment is centered on the wind tunnel body 1, fully considering the operation and control characteristics of each system. The test preparation focuses on the convenience of operation for staff, and the supporting systems are arranged with an emphasis on ease of control and energy saving principles.

[0027] The wind tunnel body 1 includes a test section 11, a high-speed diffusion section 12, a first bend 13, a first straight section 14, a second bend 15, a wind tunnel main compressor 16, a low-speed diffusion section 17, a wind tunnel heat exchanger 18, a third bend 19, a second straight section 110, a fourth bend 111, a rectifying section 112, a contraction section 113, and a nozzle section 114. The test section 11, the high-speed diffusion section 12, the first bend 13, the first straight section 14, the second bend 15, the wind tunnel main compressor 16, the low-speed diffusion section 17, the wind tunnel heat exchanger 18, the third bend 19, the second straight section 110, the fourth bend 111, the rectifying section 112, the contraction section 113, and the nozzle section 114 are connected end to end to form a closed loop. The wind tunnel heat exchanger 18 is connected to the test section 11 and the high-speed diffusion section 12 through pipelines.

[0028] The circulating water plant 4 is equipped with a circulating cooling water system, which includes an internal circulating water pump 41, a plate heat exchanger 42, a control valve 43, a circulating heat exchanger 44, and connecting valves. The internal circulating water pump 41, the plate heat exchanger 42, the control valve 43, and the circulating heat exchanger 44 are interconnected in sequence through pipelines to form a closed circulation loop. The outlet of the internal circulating water pump 41 is connected to the inlet of the control valve 43 through the connecting valves. The circulating heat exchanger 44 is placed inside the wind tunnel cavity 1. The plate heat exchanger 42 displaces the heat from the internal circulation to the external circulation atmospheric environment. The flow rate is controlled by the internal circulating water pump 41, and the temperature inside the wind tunnel cavity 1 is controlled by the control valve 43.

[0029] The air supply and exhaust plant 5 is equipped with an air supply system, which includes an air intake filter 51, an air compressor 52, a dryer 53, and an air storage container 54. The air intake filter 51, air compressor 52, dryer 53, and air storage container 54 are connected end to end through an air supply pipeline. At the same time, air compressor control valves 55 are connected in parallel at both ends of the air compressor 52. First, the air is stored in the air storage container 54. The air storage container 54 is connected to the wind tunnel body 1 through a regulating valve. The pressure inside the wind tunnel body 1 is controlled by the regulating valve.

[0030] Based on the arrangement direction of the wind tunnel body 1 in this embodiment, an exhaust gas supply and exhaust plant 5 is set above the wind tunnel body 1. The exhaust gas supply and exhaust plant 5 is connected to the wind tunnel body 1 through a gas storage tank area 6. The gas storage tank area 6 is connected to the gas supply equipment set in the exhaust gas supply and exhaust plant 5, which saves the pipeline connection path to the maximum extent and saves construction costs. A circulating water plant 4 is arranged on the left side of the exhaust gas supply and exhaust plant 5. The circulating water plant 4 is connected to the wind tunnel heat exchanger of the wind tunnel body 1 through a circulating water pipeline, which shortens the circulating water operation cycle to the maximum extent and improves the control effect.

[0031] The wind tunnel body 1 has a frequency converter room 3 and a substation 2 located on the right and upper right sides, respectively. The substation 2 is directly connected to the main compressor and auxiliary compressor of the wind tunnel via cables through the frequency converter room 3. That is, the power equipment of the substation 2 is connected to the frequency converter room 3 via cables through an underground pipe gallery. After being converted by the frequency converter room 3, it is connected to the main compressor of the wind tunnel body 1 via a main cable to achieve power supply. At the same time, after being converted by the auxiliary frequency converter in the frequency converter room 3, it is connected to the auxiliary compressor via an auxiliary cable through an underground pipe gallery. After passing through the frequency converter room 3, the substation 2 is electrically connected to the circulating water plant 4, the exhaust gas plant 5, the gas storage tank area 6, and the test section storage and test preparation room 7 through the underground pipe gallery. This layout is conducive to powering the compressor equipment with the highest power. This layout also facilitates the power supply to each system.

[0032] The wind tunnel body 1 is connected to the test section storage and test preparation room 7 directly below, which minimizes the path for changing test sections and facilitates the entry and exit of test preparation personnel to carry out test preparation work.

[0033] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. 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 scale continuous transonic wind tunnel system general structure, characterized by: The wind tunnel body (1) is provided with the air supply and exhaust plant (5) above, and the air supply and exhaust plant (5) is connected with the wind tunnel body (1) through the gas storage tank area (6); the circulating water plant (4) is arranged on the left side of the air supply and exhaust plant (5) and is connected with the wind tunnel body (1); the frequency converter room (3) and the variable voltage variable frequency power station (2) are arranged on the right side and the upper right side of the wind tunnel body (1) respectively; the variable voltage variable frequency power station (2) is arranged on the right side of the air supply and exhaust plant (5) and is connected with the wind tunnel body (1) through the frequency converter room (3); and the test section storage and test preparation room (7) is connected below the wind tunnel body (1). The wind tunnel body (1) comprises a test section (11), a high-speed diffusion section (12), a first corner (13), a first straight section (14), a second corner (15), a wind tunnel main compressor (16), a low-speed diffusion section (17), a wind tunnel heat exchanger (18), a third corner (19), a second straight section (110), a fourth corner (111), a straightening section (112), a contraction section (113) and a nozzle section (114), and the test section (11), the high-speed diffusion section (12), the first corner (13), the first straight section (14), the second corner (15), the wind tunnel main compressor (16), the low-speed diffusion section (17), the wind tunnel heat exchanger (18), the third corner (19), the second straight section (110), the fourth corner (111), the straightening section (112), the contraction section (113) and the nozzle section (114) are sequentially connected to form a closed loop, and the wind tunnel heat exchanger (18) is in communication with the test section (11) and the high-speed diffusion section (12) through pipelines. The circulating water plant (4) is provided with a circulating cooling water system, which comprises an inner circulating water pump (41), a plate heat exchanger (42), a control valve (43), a circulating heat exchanger (44) and a connecting valve, the inner circulating water pump (41), the plate heat exchanger (42), the control valve (43) and the circulating heat exchanger (44) are sequentially connected through pipelines, the outlet of the inner circulating water pump (41) is connected with the inlet of the control valve (43) through the connecting valve, and the circulating heat exchanger (44) is arranged in the wind tunnel body (1). The air supply and exhaust plant (5) is provided with an air supply system, which comprises an air inlet filter (51), an air compressor (52), a drying machine (53) and a gas storage container (54), and the air inlet filter (51), the air compressor (52), the drying machine (53) and the gas storage container (54) are sequentially connected through air supply pipelines, air compressor control valves (55) are arranged in parallel at both ends of the air compressor (52), and the gas storage container (54) is connected with the wind tunnel body (1) through an adjusting valve.

2. A large scale continuous transonic wind tunnel system general structure according to claim 1, characterized in that: The variable voltage variable frequency power station (2) is directly connected with the wind tunnel main compressor and the auxiliary compressor through the frequency converter room (3) after conversion.

3. A large scale continuous transonic wind tunnel system general structure according to claim 2, characterized in that: The circulating water plant (4) is connected with the wind tunnel heat exchanger through a circulating water pipeline.

4. A large scale continuous transonic wind tunnel system general structure according to claim 3, characterized in that: The gas storage tank area (6) is connected with the gas supply equipment arranged in the gas supply and exhaust plant (5).

5. A large scale continuous transonic wind tunnel system general structure according to claim 4, characterized in that: The power transformation and distribution station (2) is electrically connected with the circulating water plant (4), the gas supply and exhaust plant (5), the gas storage tank area (6) and the test section storage and test preparation room (7) through the frequency converter room (3).

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