Construction control method based on wind tunnel balance base center point

Abstract

A construction control method based on a wind tunnel balance foundation center point, comprising the following steps: S1. establishing a unified measurement coordinate system; S2. functional partition three-dimensional modeling and construction sequence determination; S3. component layer management; S4. construction positioning and control; S5. construction review and correction. The present application takes the wind tunnel balance foundation center point as the core reference, constructs a unified measurement coordinate system, combines partition modeling and layer management, realizes the precise construction and management and control of each functional partition and each component of the wind tunnel, solves the technical problems of low connection precision of each functional partition, large component installation deviation and non-unified measurement reference in the existing wind tunnel construction, guarantees the overall construction quality of the wind tunnel and the accuracy and reliability of the subsequent aerodynamic test data, and is suitable for high-precision construction control of various wind tunnel projects.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel engineering construction technology, and in particular to a construction control method based on the center point of a wind tunnel balance foundation. Background Technology

[0002] Wind tunnels are core equipment for aerodynamic performance testing in fields such as aerospace, automotive engineering, and weaponry. The precision of their construction directly determines the accuracy and reliability of test data and the long-term operational stability of the wind tunnel equipment. Wind tunnel engineering structures are complex, including multiple functional zones such as the fan section, diffuser section, corner section, stabilization section, contraction section, test section, and anechoic chamber. The connection precision requirements between each zone are extremely high. At the same time, it involves various types of components such as the main structure, embedded parts, acoustic structures, and equipment foundations, making the installation of these components difficult.

[0003] The following technical defects are commonly found in existing wind tunnel construction processes: First, the measurement benchmarks are not unified. Each functional area uses its own local measurement benchmark, resulting in large deviations between different areas and making it impossible to guarantee the overall axis consistency of the wind tunnel. Second, there is a lack of a systematic modeling and control system. The construction positioning of each functional area and type of component lacks a unified basis, which easily leads to problems such as deviations in the position of embedded parts, inconsistent equipment foundation elevations, and non-standard acoustic structure laying. Third, there is a lack of precise verification and correction mechanisms during construction. Construction deviations cannot be detected and corrected in a timely manner, ultimately resulting in substandard installation accuracy of the wind tunnel balance foundation, which directly affects the validity of subsequent aerodynamic test data.

[0004] Therefore, developing a wind tunnel construction control method that can unify measurement benchmarks, achieve precise zoning modeling, hierarchical control of components, and ensure construction accuracy has become a pressing technical challenge in the field of wind tunnel engineering. Summary of the Invention

[0005] This invention aims to address the shortcomings of existing technologies by providing a construction control method based on the center point of the wind tunnel balance foundation. Using the center point of the wind tunnel balance foundation as the core benchmark, a unified measurement coordinate system is constructed. By combining zonal modeling and hierarchical management, precise construction and control of each functional zone and component of the wind tunnel can be achieved. This solves the problems of inconsistent construction benchmarks, low connection accuracy, and large component installation deviations in existing wind tunnels, ensuring the construction quality of the wind tunnel and the accuracy of test data.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A construction control method based on the center point of a wind tunnel balance foundation includes the following steps:

[0008] S1. Establish a unified measurement coordinate system: With the center point of the wind tunnel balance foundation as the origin, set the X-axis parallel to the wind tunnel main axis, the Y-axis perpendicular to the wind tunnel main axis in the horizontal direction, and the Z-axis as the vertical elevation direction, as the sole reference coordinate system for measurement and positioning throughout the wind tunnel construction process. No other local measurement reference shall be used during the entire construction process, and all measurement, positioning, and verification work shall be based solely on this unified coordinate system.

[0009] S2. Functional Zoning 3D Modeling and Construction Sequence Determination: Using the center point of the wind tunnel balance foundation as the sole reference point, and based on a unified measurement coordinate system, 3D models are constructed for the fan section, diffuser section, corner section, stabilization section, contraction section, test section, and anechoic chamber according to the actual functions of the wind tunnel. This accurately restores the structural dimensions, spatial location, and connection relationships of each functional zone. Simultaneously, using the center point of the wind tunnel balance foundation as a reference, a clockwise or counterclockwise construction sequence is determined, and construction work is carried out sequentially for each functional zone to ensure orderly connection between zones. Simultaneously, based on the 3D model and using the center point of the wind tunnel balance foundation as a reference, a virtual centerline for the wind tunnel flow channel is constructed. The design parameters of this virtual centerline are clarified, and the virtual centerline is checked synchronously throughout the construction process to ensure it always meets the wind tunnel design requirements, providing an axial reference for subsequent sequential construction.

[0010] S3. Component Layer Management: In the 3D model of each functional area, the components are divided into the main structural layer, embedded parts layer, acoustic structure layer, and equipment foundation layer according to the component type. The 3D coordinates, installation parameters, and accuracy requirements of each layer of components are clearly defined.

[0011] S4. Construction Positioning and Control: Based on a unified measurement coordinate system, a three-dimensional model, and a determined clockwise or counterclockwise construction sequence, the center point of the wind tunnel balance foundation is used as the core benchmark to position each functional zone and layer of components on-site. Construction operations are strictly carried out in accordance with the coordinate parameters and accuracy requirements marked on the model. During construction, the virtual center line of the flow channel is checked simultaneously in conjunction with the current construction progress of each zone. Its deviation from the wind tunnel design requirements is compared to ensure that the virtual center line of the flow channel always meets the design standards as the construction progresses, thereby ensuring the connection accuracy of each zone's sequential construction.

[0012] S5. Construction Verification and Correction: During and after construction, using the center point of the wind tunnel balance foundation as a reference, a comprehensive verification of component positioning, zone connection positions, and virtual center lines of the flow channels is conducted through a unified measurement coordinate system. Special attention is paid to the connection points of each zone constructed in a clockwise or counterclockwise sequence, verifying the continuity and compliance of the virtual center lines of the flow channels to confirm full compliance with wind tunnel design requirements. If deviations exceed the standards, timely corrections are made to ensure that construction accuracy and the virtual center lines of the flow channels meet design requirements, guaranteeing the overall consistency of the wind tunnel flow channels.

[0013] In step S2, the 3D modeling of the wind turbine section focuses on the wind turbine installation area, foundation, connection interfaces, and surrounding support structures. It clarifies the wind turbine installation positioning benchmarks and spatial attitude parameters, ensuring smooth connection with adjacent sections constructed in a clockwise or counter-clockwise sequence and consistent virtual center lines of the flow channel. The 3D modeling of the diffuser section accurately recreates the inlet and outlet cross-sections, the gradually changing inner wall surface, and supporting components, clarifying the gradual change in cross-sectional dimensions and the axial direction to ensure the smoothness of the virtual center line of the flow channel in the diffuser section. The 3D modeling of the corner section focuses on the turning angle, inner wall curvature, connecting flanges, and reinforcing components, ensuring the accuracy of axial turning and connection dimensions, and guaranteeing that the turning of the virtual center line of the flow channel meets design requirements. The 3D modeling of the stabilization section focuses on the installation position of the rectifier grille, the support frame, and the reference positioning points, clarifying the grille spacing and verticality references to ensure that the virtual center line of the flow channel passes through the center of the stabilization section. The 3D modeling of the contraction section accurately constructs the inlet and outlet cross-sections, the inner wall contraction surface, and the reinforcement structure, clarifying the curvature parameters of the contraction surface to ensure that the virtual center line of the flow channel matches the surface of the contraction section. The 3D modeling of the test section uses the balance foundation as the core, marking the spatial coordinates of the center point of the balance foundation to ensure that the virtual center line of the flow channel is laid out with this center point as the reference. The 3D modeling of the anechoic chamber restores the inner wall of the anechoic chamber, the area where the anechoic material is laid, and the equipment installation interface to ensure that it does not affect the design direction of the virtual center line of the flow channel.

[0014] In step S3, the main structural layer includes the frame beams, columns, walls, and core load-bearing components of the shell for each functional area; the embedded parts layer marks the three-dimensional coordinates, specifications, and installation depth of the embedded parts for the balance foundation and equipment installation; the acoustic structure layer specifies the installation location, laying thickness, and fixing process of the sound-absorbing panels and sound insulation cotton components; the equipment foundation layer covers the dimensions, elevation, and reserved hole locations of the fan foundation and balance foundation, wherein the balance foundation needs to be bound to the center point reference of a unified measurement coordinate system.

[0015] In step S4, high-precision measuring instruments, including total stations, precision electronic levels, and laser trackers, are used for construction positioning. The model coordinates are directly converted to the actual measured coordinates on site through a unified measurement coordinate system, so as to achieve accurate layout and installation of components.

[0016] The key points of the construction verification in step S5 include the positional deviation of the connection between each functional area, the three-dimensional coordinate deviation of the embedded parts, and the elevation deviation of the equipment foundation. The verification accuracy requirements are: plane positional deviation ≤ ±0.1mm and elevation deviation ≤ ±0.05mm.

[0017] The beneficial effects of this invention are as follows: This invention uses the center point of the wind tunnel balance foundation as the core benchmark to construct a unified measurement coordinate system. Combined with zonal modeling and hierarchical management, it realizes the precise construction and control of each functional zone and component of the wind tunnel. It solves the technical problems of low connection accuracy of each functional zone, large installation deviation of components, and inconsistent measurement benchmarks in existing wind tunnel construction. It ensures the overall construction quality of the wind tunnel and the accuracy and reliability of subsequent aerodynamic test data. It is applicable to high-precision construction control of various wind tunnel projects. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments:

[0019] A construction control method based on the center point of a wind tunnel balance foundation includes the following steps:

[0020] S1. Establish a unified measurement coordinate system: With the center point of the wind tunnel balance foundation as the origin, establish a rectangular coordinate system, in which the X-axis is parallel to the wind tunnel main axis, the Y-axis is perpendicular to the wind tunnel main axis horizontally, and the Z-axis is the vertical elevation direction. This coordinate system serves as the sole reference coordinate system for measurement and positioning throughout the entire wind tunnel construction process. No other local measurement references may be used during the entire construction process. All functional area modeling, on-site measurement, component positioning, and verification work shall be based solely on this unified coordinate system to eliminate measurement reference deviations in different areas and different processes.

[0021] S2. Functional Zoning 3D Modeling and Construction Sequence Determination: Using the center point of the wind tunnel balance foundation as the sole reference point, and based on a unified measurement coordinate system, 3D models are constructed for each of the seven functional zones—fan section, diffuser section, corner section, stabilization section, contraction section, test section, and anechoic chamber—accurately reproducing the structural dimensions, spatial location, and connection relationships of each functional zone. Simultaneously, using the center point of the wind tunnel balance foundation as a reference, a clockwise or counterclockwise construction sequence is determined, and construction work is carried out sequentially for each functional zone to ensure orderly connection between zones. Simultaneously, based on the 3D model and using the center point of the wind tunnel balance foundation as a reference, a virtual centerline for the wind tunnel flow channel is constructed, clarifying its design parameters. This virtual centerline is continuously verified throughout the construction process to ensure it always meets the wind tunnel design requirements, providing an axial reference for subsequent sequential construction.

[0022] Based on a unified measurement coordinate system and according to the actual functions of the wind tunnel, three-dimensional models were established for each of the seven functional zones: the fan section, the diffuser section, the corner section, the stabilization section, the contraction section, the test section, and the anechoic chamber.

[0023] Wind turbine section: The modeling scope covers the wind turbine installation area, wind turbine foundation, connection interface and surrounding support structure, and clarifies the wind turbine installation positioning benchmark and spatial attitude parameters to ensure that the model matches the installation dimensions of the wind turbine equipment, while ensuring smooth connection with adjacent sections constructed in clockwise or counterclockwise order and continuous virtual center line of the flow channel.

[0024] Diffusion section: Accurately recreate the inlet and outlet cross sections, the gradually curved inner wall surface, and supporting components of the diffusion section; clarify the gradual change law of cross-sectional dimensions and the direction of the axis; control the slope and dimensional deviation of the construction cross section; and ensure the smoothness of the virtual center line of the flow channel in the diffusion section.

[0025] Corner section: Focus on modeling the turning angle, inner wall curvature, connecting flange and reinforcement components to ensure the accuracy of the axis turning at the corner, the smoothness of the curved surface, and the connection dimensions with adjacent functional sections, and ensure that the turning of the virtual center line of the flow channel meets the design requirements.

[0026] Stabilization Section: Based on the requirements for airflow stability, model the inner wall of the stabilization section, the installation position of the flow straightener, the support frame and the reference positioning point, clarify the spacing and verticality reference of the flow straightener, and ensure that the virtual center line of the flow channel passes through the center position of the stabilization section;

[0027] Contraction Section: Accurately construct the inlet and outlet sections, inner wall contraction surface, and reinforcement structure of the contraction section, clarify the curvature parameters of the contraction surface, guide the precise forming of the construction, and ensure that the virtual center line of the flow channel matches the surface of the contraction section;

[0028] Test section: With the balance foundation as the core, model the inner wall of the test section, the test platform, and the installation area of ​​the balance foundation. Mark the spatial coordinates of the center point of the balance foundation to ensure that the construction benchmark is consistent with the design, and at the same time ensure that the virtual center line of the flow channel is laid out with this center point as the benchmark.

[0029] Anechoic Chamber: Model the inner wall of the anechoic chamber, the area where the anechoic material is laid, the sound insulation structure and equipment installation interface, clarify the anechoic material laying parameters and installation process, and ensure that the design direction of the virtual center line of the flow channel is not affected.

[0030] S3. Component Layered Management: In the 3D model of each functional area, the components are divided into the main structural layer, embedded parts layer, acoustic structure layer, and equipment foundation layer according to the component type. The 3D coordinates, installation parameters, and accuracy requirements of each layer of components are clearly defined to achieve refined management and control.

[0031] Main structural layer: Includes the core load-bearing components such as frame beams, columns, walls, and shells of each functional area, and marks the component material, cross-sectional dimensions, installation elevation, and connection method;

[0032] Embedded parts layer: Mark the three-dimensional coordinates, specifications, installation depth and fixing method of all embedded parts, with a focus on the reference point of the balance foundation center point;

[0033] Acoustic structural layer: Clearly define the installation location, laying thickness, and fixing process of components such as sound-absorbing panels and sound insulation cotton to ensure that acoustic performance meets the standards;

[0034] Equipment foundation layer: This layer covers the installation foundations for equipment such as wind turbine foundations and balance foundations. It clearly defines the foundation dimensions, elevation, and the location of reserved holes. The balance foundation must strictly correspond to the center point of a unified measurement coordinate system.

[0035] S4. Construction Positioning and Control: Based on a unified measurement coordinate system, a 3D model, and a determined clockwise or counterclockwise construction sequence, using the center point of the wind tunnel balance foundation as the core benchmark, on-site construction positioning is carried out for each functional zone and each layer of components. Construction operations are strictly performed according to the coordinate parameters and accuracy requirements marked in the model. Before construction, the 3D coordinates of the components in the 3D model are converted into on-site measured coordinates through a unified measurement coordinate system. During construction, based on the determined clockwise or counterclockwise construction sequence, using the center point of the wind tunnel balance foundation as the core benchmark, high-precision measuring instruments (total station, precision electronic level, laser tracker) are used to lay out and install components according to the converted coordinates, strictly adhering to the accuracy requirements marked in the model. During construction, the virtual center line of the flow channel is simultaneously checked in conjunction with the current construction zone progress, and its deviation from the wind tunnel design requirements is compared to ensure that the virtual center line of the flow channel always meets the design standards as the construction progresses, thereby ensuring the connection accuracy of the sequential construction of each zone.

[0036] S5. Construction Verification and Correction: During and after construction, using the center point of the wind tunnel balance foundation as a reference, a comprehensive verification of component positioning, zone connection positions, and virtual center lines of the flow channels is conducted through a unified measurement coordinate system. Special attention is paid to the connection points of each zone constructed in a clockwise or counter-clockwise sequence, verifying the continuity and compliance of the virtual center lines of the flow channels to confirm full compliance with wind tunnel design requirements. After construction, a comprehensive as-built survey is conducted to verify the positional deviations at the connection points of each functional zone, the three-dimensional coordinate deviations of embedded parts, and the elevation deviations of equipment foundations. The verification accuracy requirements are: planar positional deviation ≤ ±0.1mm, elevation deviation ≤ ±0.05mm. If deviations exceed the standards, timely corrections are made to ensure that construction accuracy and the virtual center lines of the flow channels meet design requirements, guaranteeing the overall consistency of the wind tunnel flow channels and forming a closed-loop control system of "modeling-positioning-construction-verification-correction" to ensure construction accuracy and the overall consistency of the wind tunnel flow channels.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A construction control method based on the center point of a wind tunnel balance foundation, characterized in that, Includes the following steps: S1. Establish a unified measurement coordinate system: with the center point of the wind tunnel balance foundation as the coordinate origin, set the X-axis parallel to the wind tunnel main axis, the Y-axis perpendicular to the wind tunnel main axis in the horizontal direction, and the Z-axis as the vertical elevation direction, as the sole reference coordinate system for measurement and positioning throughout the wind tunnel construction process; S2. Functional Zoning 3D Modeling and Construction Sequence Determination: Using the center point of the wind tunnel balance foundation as the sole reference point, and based on a unified measurement coordinate system, 3D models are constructed for the fan section, diffuser section, corner section, stabilization section, contraction section, test section, and anechoic chamber according to the actual functions of the wind tunnel. This accurately restores the structural dimensions, spatial location, and connection relationships of each functional zone. Simultaneously, using the center point of the wind tunnel balance foundation as the reference, a clockwise or counterclockwise construction sequence is determined, and construction work for each functional zone is carried out in this order to ensure orderly connection between the construction of each zone. Simultaneously, based on the 3D model and using the center point of the wind tunnel balance foundation as the reference, a virtual centerline of the wind tunnel flow channel is constructed, and the design parameters of this virtual centerline are clarified. S3. Component Layer Management: In the 3D model of each functional area, the components are divided into the main structural layer, embedded parts layer, acoustic structure layer, and equipment foundation layer according to the component type. The 3D coordinates, installation parameters, and accuracy requirements of each layer of components are clearly defined. S4. Construction Positioning and Control: Based on a unified measurement coordinate system, a three-dimensional model, and a determined clockwise or counterclockwise construction sequence, the center point of the wind tunnel balance foundation is used as the core reference to conduct on-site construction positioning for each functional area and each layer of components. Construction operations are carried out strictly in accordance with the coordinate parameters and accuracy requirements marked on the model. S5. Construction Verification and Correction: During and after construction, using the center point of the wind tunnel balance foundation as a reference, a comprehensive verification of component positioning, zone connection positions, and virtual center lines of the flow channels is conducted through a unified measurement coordinate system. Special attention is paid to the connection points of each zone constructed in a clockwise or counterclockwise sequence, verifying the continuity and compliance of the virtual center lines of the flow channels to confirm full compliance with wind tunnel design requirements. If deviations exceed the standards, timely corrections are made to ensure that construction accuracy and the virtual center lines of the flow channels meet design requirements, guaranteeing the overall consistency of the wind tunnel flow channels.

2. The construction control method based on the center point of a wind tunnel balance foundation according to claim 1, characterized in that, In step S2, the 3D modeling of the wind turbine section focuses on the wind turbine installation area, foundation, connection interfaces, and surrounding support structures. It clarifies the wind turbine installation positioning benchmarks and spatial attitude parameters, ensuring smooth connection with adjacent sections constructed in a clockwise or counter-clockwise sequence and consistent virtual center lines of the flow channel. The 3D modeling of the diffuser section accurately recreates the inlet and outlet cross-sections, the gradually changing inner wall surface, and supporting components, clarifying the gradual change in cross-sectional dimensions and the axial direction to ensure the smoothness of the virtual center line of the flow channel in the diffuser section. The 3D modeling of the corner section focuses on the turning angle, inner wall curvature, connecting flanges, and reinforcing components, ensuring the accuracy of axial turning and connection dimensions, and guaranteeing that the turning of the virtual center line of the flow channel meets design requirements. The 3D modeling of the stabilization section focuses on the installation position of the rectifier grille, the support frame, and the reference positioning points, clarifying the grille spacing and verticality references to ensure that the virtual center line of the flow channel passes through the center of the stabilization section. The 3D modeling of the contraction section accurately constructs the inlet and outlet cross-sections, the inner wall contraction surface, and the reinforcement structure, clarifying the curvature parameters of the contraction surface to ensure that the virtual center line of the flow channel matches the surface of the contraction section. The 3D modeling of the test section uses the balance foundation as the core, marking the spatial coordinates of the center point of the balance foundation to ensure that the virtual center line of the flow channel is laid out with this center point as the reference. The 3D modeling of the anechoic chamber restores the inner wall of the anechoic chamber, the area where the anechoic material is laid, and the equipment installation interface to ensure that it does not affect the design direction of the virtual center line of the flow channel.

3. The construction control method based on the center point of a wind tunnel balance foundation according to claim 2, characterized in that, In step S3, the main structural layer includes the frame beams, columns, walls, and core load-bearing components of the shell for each functional area; the embedded parts layer marks the three-dimensional coordinates, specifications, and installation depth of the embedded parts for the balance foundation and equipment installation; the acoustic structure layer specifies the installation location, laying thickness, and fixing process of the sound-absorbing panels and sound insulation cotton components; the equipment foundation layer covers the dimensions, elevation, and reserved hole locations of the fan foundation and balance foundation, wherein the balance foundation needs to be bound to the center point reference of a unified measurement coordinate system.

4. The construction control method based on the center point of a wind tunnel balance foundation according to claim 3, characterized in that, In step S4, high-precision measuring instruments, including total stations, precision electronic levels, and laser trackers, are used for construction positioning. The model coordinates are directly converted to the actual measured coordinates on site through a unified measurement coordinate system, so as to achieve accurate layout and installation of components.

5. The construction control method based on the center point of a wind tunnel balance foundation according to claim 4, characterized in that, The key points of the construction verification in step S5 include the positional deviation of the connection between each functional area, the three-dimensional coordinate deviation of the embedded parts, and the elevation deviation of the equipment foundation. The verification accuracy requirements are: plane positional deviation ≤ ±0.1mm and elevation deviation ≤ ±0.05mm.