Gas turbine digital twin modeling and simulation method based on semi-physical model

Abstract

The application provides a gas turbine digital twin modeling and simulation method based on a semi-physical model, and specifically comprises the following steps: step one, image data acquisition; step two, data analysis; step three, component modeling; step four, feature calculation and correction; step five, modeling forming; step six, energy efficiency diagnosis; and step seven, self-repairing, wherein the scanning device in the step one comprises a base, a box body is fixed to the top of the base, and an opening is formed in the top of the box body, and in use, the scanning seat is moved by the driving motor, the scanning seat is moved synchronously by the movable column to drive the displacement assembly, the scanning seat and the threaded column are moved up and down as a whole by the displacement mechanism while the scanning assembly adjusts the scanning point, the horizontal movement of the scanning seat is completed while the up and down position is adjusted, so that the shape of the gas turbine is better fitted for rapid and accurate scanning.

Description

Technical Field

[0001] This invention relates to the field of gas turbine modeling equipment, specifically to a method for digital twin modeling and simulation of gas turbines based on a semi-physical model. Background Technology

[0002] In the process of gas turbine manufacturing, it is necessary to model the model and then optimize its specific data. Existing 3D modeling technology uses a scanner to scan the model. This scanner uses a vision camera to scan the model. The model is then scanned and modeled by combining the model library with the images scanned by the vision camera. However, when modeling is done based on images taken by a single vision camera and then drawn using spatial point plotting, the accuracy of the model is not high.

[0003] According to a patent document with publication number CN115761129A, a scanning modeling technique includes image data acquisition: acquiring multi-dimensional image data of the model using a scanning device; data analysis: establishing a three-dimensional spatial coordinate system, setting an initial origin based on the image data obtained in step S1, and then plotting points in the multi-dimensional images to draw a spatial grid map; modeling: combining the multi-dimensional spatial grid map obtained in step S2 with edge point interaction in the three-dimensional spatial coordinate system, and cropping the overlapping edge areas to establish a preliminary model. This technique combines dynamic stereoscopic image data of the model in multiple dimensions with static planar dimensions, then uses edge interaction to stitch the images together, cropping the overlapping edges to perform initial modeling. After modeling, self-checking and repair are performed, and the initial model is self-mapped and then reverse-repaired to improve the overall accuracy of the scanning modeling. However, while this technique achieves high accuracy in scanning modeling, it cannot simultaneously perform rapid focus on the water surface during scanning, nor can it quickly fit the shape of the gas turbine during scanning, resulting in inconvenience in use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a digital twin modeling and simulation method for gas turbines based on a semi-physical model, thereby solving the problems mentioned in the background. The present invention features a novel structure. During use, as the drive motor moves the scanning base, the scanning base moves synchronously with the displacement component via a movable column. While the scanning component adjusts the scanning point, the displacement mechanism pushes the scanning base and the threaded column to move up and down as a whole. By adjusting the vertical position simultaneously with the horizontal movement of the scanning base, the shape of the gas turbine can be better matched for rapid and accurate scanning.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a digital twin modeling and simulation method for gas turbines based on a semi-physical model, wherein the modeling and simulation method specifically includes the following steps: Step 1: Image data acquisition, using a scanning device to acquire image data of the model in multiple dimensions; Step 2: Data analysis, establish a three-dimensional spatial coordinate system, set the initial origin based on the image data obtained in step S1, and then plot the images in multiple dimensions to draw a spatial grid map; Step 3: Component modeling; Step 4: Feature calculation and correction. The reference characteristic line is corrected by running data through primitive leaf cascades, step-by-step superposition, and characteristic map correction methods. Step 5: Modeling and shaping; Step Six: Energy Efficiency Diagnosis, Performance Impact Analysis Based on Simulation Model; Step 7: Self-check and repair; The scanning device in step one includes a base, a housing fixed to the top of the base, an opening in the top of the housing, a movable seat movably installed inside the opening, an assembly movably installed on the top of the movable seat, fixed seats fixed at both ends of the housing, fixed slots on the fixed seats, a rotating seat rotatably installed inside the fixed slots, a movable frame welded to the side wall of the rotating seat, a slot and a limiting slot respectively on the movable frame, a scanning assembly movably installed inside the slot, and a displacement assembly slidably installed inside the limiting slot.

[0006] Optionally, in step three, mathematical models are established for the compressor, combustion chamber, and turbine respectively; energy efficiency diagnosis and optimization are performed based on the gas turbine simulation model, including the impact of intake system degradation on the thermal performance of the gas turbine and the optimization of compressor water washing based on actual operating data. The compressor, combustion chamber, and turbine are all modeled using a modular modeling method for power system simulation.

[0007] Optionally, in step five, the multi-dimensional spatial mesh maps obtained in steps S2 and S2 are combined with each other in three-dimensional spatial coordinates by using edge point interaction, and edge clipping is performed on the overlapping edge areas to establish a preliminary model.

[0008] Optionally, in step seven, the preliminary model obtained in step S5 is self-mapped in multiple dimensions, and then compared and analyzed with the spatial grid map of multiple dimensions in step S2. Based on the differences analyzed, the details are modified, and the repaired model is self-mapped in multiple dimensions again and compared and analyzed with the image data of multiple dimensions in step S1. The details are revised again based on the differences until the final model is formed.

[0009] Optionally, a differential gearbox is fixed to the side of the fixed base, a drive motor is fixedly installed on the side of the differential gearbox, a servo motor is fixedly installed on the side of the housing, a screw is installed on the servo motor, a support plate is movably installed on the screw, and the top of the support plate is welded to the bottom of the movable base.

[0010] Optionally, a power mechanism is fixed inside the housing, a stud is installed on the power mechanism, a threaded seat is movably installed on the stud, a lifting mechanism is fixed on the top of the threaded seat, a support seat is fixed at one end of the lifting mechanism, and the support seat is movably installed at the bottom of the movable seat.

[0011] Optionally, a support mechanism is fixedly installed inside the slot. A movable block and a motor base are fixedly fixed at one end of the support mechanism. A DC motor is fixedly installed on the motor base. Slider blocks are welded to the sides of the movable block and the motor base. A sliding groove is opened on the inner wall of the slot, and the slider is movably installed inside the sliding groove.

[0012] Optionally, the DC motor is equipped with a threaded column, the displacement assembly includes a scanning base, the scanning base is movably mounted on the threaded column, a reinforcing base is fixed to the side of the scanning base, and a camera and an auxiliary mechanism are respectively fixed on the reinforcing base, with the camera fixedly mounted between the auxiliary mechanisms.

[0013] Optionally, the scanning seat has an opening on one side, a movable column is movably installed inside the opening, a limiting seat is movably installed on the movable column, and the limiting seat is movably installed inside the limiting groove.

[0014] Optionally, a limiting plate is welded to the side of the limiting seat, the diameter of the limiting plate is larger than the width of the limiting groove, a displacement mechanism is fixedly installed on one side of the limiting plate, and one end of the movable column is movably installed inside the displacement mechanism.

[0015] The beneficial effects of this invention are: 1. In use, the present invention, during the process of the drive motor driving the scanning seat to move, the scanning seat drives the displacement component to move synchronously through the movable column. While the scanning component adjusts the scanning point, the displacement mechanism pushes the scanning seat and the threaded column to move up and down as a whole. The adjustment of the vertical position is completed by the horizontal movement of the scanning seat, so as to better fit the shape of the gas turbine for fast and accurate scanning.

[0016] 2. In this invention, the unit is placed between movable seats under the hoisting of the hoisting equipment. The movable seats move horizontally to widen the opening between them. The movable seats clamp and limit the two sides of the unit. The horizontal movement of the movable seats realizes the rapid positioning of the unit under different diameters. In addition, the support seat provides secondary support to the base from the bottom while also supporting the movable seats, effectively avoiding deformation caused by pressure on the movable seats.

[0017] 3. In this invention, the lifting mechanism pushes the support seat to move up and down. While the support seat moves up and down, the movable seat moves to both sides. The support seat and the movable seat cooperate to adjust the height of the exposed part of the unit, exposing half of the unit. After scanning by the scanning component, the required unit shape is symmetrically generated. When the support seat moves, it contacts the bottom of the movable seat. The movable seat provides a limit for the support seat, effectively preventing the tilting caused by the rotation of the threaded seat on the stud. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the digital twin modeling and simulation method for gas turbines based on a semi-physical model according to the present invention. Figure 2 This is a schematic diagram of the device for the digital twin modeling and simulation method of gas turbine based on a semi-physical model according to the present invention. Figure 3 This is a schematic diagram of the unit after dismantling, based on the semi-physical model-based digital twin modeling and simulation method for gas turbines according to the present invention. Figure 4 This is a schematic diagram of the support frame for the digital twin modeling and simulation method of gas turbines based on a semi-physical model, as described in this invention. Figure 5 This is a magnified structural diagram of point A in the digital twin modeling and simulation method for gas turbines based on a semi-physical model according to the present invention. Figure 6 This is a schematic diagram of the displacement component of the gas turbine digital twin modeling and simulation method based on a semi-physical model according to the present invention. Figure 7 This is a schematic diagram of the structure of the movable seat in the digital twin modeling and simulation method for gas turbines based on a semi-physical model according to the present invention. Figure 8 This is a schematic diagram of the structure of the movable seat after being cut open, based on the semi-physical model-based digital twin modeling and simulation method for gas turbines of the present invention.

[0019] In the diagram: 1. Base; 2. Housing; 3. Servo motor; 4. Opening; 5. Movable seat; 6. Unit; 7. Fixed seat; 8. Fixed groove; 9. Rotating seat; 10. Differential gearbox; 11. Drive motor; 12. Movable frame; 13. Scanning assembly; 14. Limiting groove; 15. Displacement assembly; 16. Slot; 17. Support mechanism; 18. Movable block; 19. Limiting seat; 20. Limiting plate; 21. Displacement mechanism; 22. Scanning seat; 23. Reinforcing seat; 24. Camera; 25. Auxiliary mechanism; 26. Threaded column; 27. Motor seat; 28. Slide groove; 29. ​​Slider; 30. DC motor; 31. Opening; 32. Movable column; 33. Screw; 34. Power mechanism; 35. Screw; 36. Threaded seat; 37. Lifting mechanism; 38. Support seat; 39. Support plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 8 This invention provides a technical solution: a digital twin modeling and simulation method for gas turbines based on a semi-physical model, wherein the modeling and simulation method specifically includes the following steps: Step 1: Image data acquisition, using a scanning device to acquire image data of the model in multiple dimensions; Step 2: Data analysis, establish a three-dimensional spatial coordinate system, set the initial origin based on the image data obtained in step S1, and then plot the images in multiple dimensions to draw a spatial grid map; Step 3: Component modeling; Step 4: Feature calculation and correction. The reference characteristic line is corrected by running data through primitive leaf cascades, step-by-step superposition, and characteristic map correction methods. Step 5: Modeling and shaping; Step Six: Energy Efficiency Diagnosis, Performance Impact Analysis Based on Simulation Model; Step 7: Self-check and repair; The scanning device in step one includes a base 1, a housing 2 fixed to the top of the base 1, an opening 4 at the top of the housing 2, a movable seat 5 movably installed inside the opening 4, and a unit 6 movably installed on the top of the movable seat 5. Fixed seats 7 are fixed at both ends of the housing 2, and fixed slots 8 are formed on the fixed seats 7. A rotating seat 9 is rotatably installed inside the fixed slots 8. A movable frame 12 is welded to the side wall of the rotating seat 9. The movable frame 12 has slots 16 and limiting slots 14. A scanning component 13 is movably installed inside the slots 16, and a displacement component 15 is slidably installed inside the limiting slots 14. It can be understood that the rotating seat 9 drives the movable frame 12 to rotate inside the fixed slots 8, changing the height and position of the scanning component 13. The movable frame 12 opens up the space at the top of the housing 2 by rotating, facilitating the rapid installation of the unit 6 in the early stages. Furthermore, the rotation of the movable frame 12 allows the scanning component 13 to complete a comprehensive scanning and modeling of the unit 6 from different angles.

[0022] In this embodiment, step three establishes mathematical models for the compressor, combustion chamber, and turbine respectively; energy efficiency diagnosis and optimization are performed based on the gas turbine simulation model, including the impact of intake system degradation on the gas turbine's thermodynamic performance and compressor water washing optimization based on actual operating data. The compressor, combustion chamber, and turbine are all modeled using a modular modeling method for power system simulation. In step five, the multi-dimensional spatial mesh maps obtained in steps S2 and S3 are combined using edge point interaction in three-dimensional spatial coordinates, and edge clipping is performed on overlapping areas to establish a preliminary model. In step seven, the preliminary model obtained in step S5 undergoes multi-dimensional self-mapping, and then is compared and analyzed with the multi-dimensional spatial mesh map from step S2. Based on the differences analyzed, detailed modifications are made, and the repaired model undergoes multi-dimensional self-mapping again and is compared and analyzed with the multi-dimensional image data from step S1. Further detailed revisions are made based on the differences until the final model is formed.

[0023] In this embodiment, a differential gearbox 10 is fixed to the side of the fixed base 7, a drive motor 11 is fixedly installed on the side of the differential gearbox 10, a servo motor 3 is fixedly installed on the side of the housing 2, a screw 33 is installed on the servo motor 3, a support plate 39 is movably installed on the screw 33, and the top of the support plate 39 is welded to the bottom of the movable base 5. The housing 2 is equipped with a power mechanism 34, which is a motor. After the motor is started by an external switch, it drives the stud 35 to rotate. When the stud 35 rotates, it pushes the threaded seat 36 to move horizontally. When the threaded seat 36 moves horizontally, the lifting mechanism 37 pushes the support seat 38 to contact the bottom of the movable seat 5. The movable seat 5 limits the threaded seat 36 through the support seat 38, effectively avoiding the influence caused by the synchronous rotation of the threaded seat 36 with the stud 35. The power mechanism 34 is equipped with a stud 35, and the threaded seat 36 is movably mounted on the stud 35. The top of the threaded seat 36 is fixed with a lifting mechanism 37, and one end of the lifting mechanism 37 is fixed with a support seat 38. The support seat 38 is movably mounted on the bottom of the movable seat 5. A support mechanism 17 is fixedly installed inside the slot 16. A movable block 18 and a motor base 27 are fixed to one end of the support mechanism 17. A DC motor 30 is fixedly installed on the motor base 27. Slider 29s are welded to the sides of the movable block 18 and the motor base 27. A sliding groove 28 is opened on the inner wall of the slot 16. The slider 29 is movably installed inside the sliding groove 28. It can be understood that the lifting mechanism 37 and the displacement mechanism 21 are both linear reciprocating electric push rods. The electric push rods are connected to an external telescopic switch through wires. The telescopic switch is manually controlled to control the individual movement of the lifting mechanism 37 and the displacement mechanism 21. In use, the scanning seat 22 drives the limit seat 19 and the displacement mechanism 21 to move horizontally through the movable column 32. At the same time as the displacement mechanism 21 moves horizontally, it pushes the movable column 32 to move outward. The outward movement of the movable column 32 pushes the scanning seat 22 and the threaded column 26 to move. The movement of the scanning seat 22 brings the camera 24 closer to the unit 6 for scanning.

[0024] In this embodiment, a threaded post 26 is mounted on the DC motor 30. The displacement assembly 15 includes a scanning base 22, which is movably mounted on the threaded post 26. A reinforcing base 23 is fixed to the side of the scanning base 22. A camera 24 and an auxiliary mechanism 25 are respectively fixed on the reinforcing base 23, and the camera 24 is fixedly mounted between the auxiliary mechanisms 25. An opening 31 is formed on one side of the scanning base 22. A movable post 32 is movably mounted inside the opening 31. A limiting seat 19 is movably mounted on the movable post 32, and the limiting seat 19 is movably mounted inside the limiting groove 14. The limiting seat 19 has a limiting disk 20 welded to its side. The diameter of the limiting disk 20 is larger than the width of the limiting groove 14. A displacement mechanism 21 is fixedly installed on one side of the limiting disk 20. One end of the movable column 32 is movably installed inside the displacement mechanism 21. The auxiliary mechanism 25 is an auxiliary camera. The auxiliary camera works in conjunction with the camera 24 to perform multiple modeling operations on the unit 6. In use, when the limiting seat 19 moves inside the limiting groove 14, the limiting disk 20 limits it from both sides, thereby preventing the limiting seat 19 from tilting and getting stuck in the limiting groove 14. One end of the movable column 32 is connected to the opening 31, so that the displacement mechanism 21 always provides a power support point to the scanning seat 22.

[0025] Working Principle: During use, the drive motor 11 is started to rotate the rotating seat 9. After the rotating seat 9 rotates, the movable frame 12 moves to one end of the fixed groove 8. One end of the fixed groove 8 provides limiting support for the movable frame 12. When the movable frame 12 rotates and opens to one side, the unit 6 is hoisted to the top of the movable seat 5 by external hoisting equipment. When the unit 6 is installed on the top of the movable seat 5, the servo motor 3 is started. The servo motor drives the support plate 39 to move inward or outward simultaneously through the screw 33. The movement of the support plate 39 causes one end of the movable seat 5 to move from the inside to the outside. After the movable seat 5 moves and opens to a certain width, the bottom of the unit 6 can enter the gap for limiting. After the movable seat 5 continues to open outward, the power mechanism 34 is started according to the length of the unit 6. The rotating stud 35 pushes the threaded seat 36 to move, adjusting the position of the support seat 38 by moving the threaded seat 36 inward and outward. As the stud 35 rotates, it pushes the threaded seat 36 to move horizontally. During this horizontal movement, the lifting mechanism 37 pushes the support seat 38 into contact with the bottom of the movable seat 5. The movable seat 5, through the support seat 38, limits the movement of the threaded seat 36, effectively preventing the threaded seat 36 from rotating synchronously with the stud 35. When the support seat 38 moves to both ends of the unit 6, the movable seat 5 displaces, causing the bottom of the unit 6 to contact the support seat 38. The inner walls of the support seat 38 and the movable seat 5 cooperate to provide three-point support for the unit 6. Additionally, activating the lifting mechanism 37 moves the support seat 38 up and down. As the unit moves downwards, the support base 38 moves downwards as well. The movable base 5 opens in coordination with the displacement, and the unit 6 moves up and down to adjust the height of the exposed top, so that half of the top of the unit 6 is exposed. The unit 6 is symmetrical in shape, and later, only half of the unit 6 needs to be scanned by the scanning component 13 to complete the generation of the later model. When scanning is required, the drive motor 11 is started to drive the rotating base 9 and the movable frame 12 to swing. The movable frame 12 drives the scanning component 13 and the displacement component 15 to tilt and rotate, adjusting the scanning of the arc shape of the top of the unit 6. The movable frame 12 rotates 180 degrees from one side and moves to the other side. The scanning component 13 completes the full scan of the upper part of the unit 6. During scanning, the DC motor 30 is started to drive the threaded column 26 to rotate. When the threaded column 26 rotates... The scanning mount 22 is moved horizontally, changing its position as it moves. While the movable frame 12 rotates the scanning mount 22, circular scans at different positions are completed via the camera 24 and auxiliary mechanism 25. During the horizontal movement of the scanning mount 22, the displacement mechanism 21 is activated to push it further. As the scanning mount 22 moves, the threaded column 26 and motor mount 27 are inside the slot 16. The motor mount 27 presses against the support mechanism 17, which is a support spring. The spring generates a rebound force after being compressed. Later, when the movable column 32 loses its pressure on the scanning mount 22, the support mechanism 17 pushes the motor mount 27 and the scanning mount 22 back to their original positions. Under the push of the displacement mechanism 21, the scanning mount 22 adjusts the distance between the camera 24 and the unit 6.This allows for a better comprehensive scanning and modeling of Unit 6.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A digital twin modeling and simulation method for gas turbines based on a semi-physical model, characterized by: The modeling and simulation method specifically includes the following steps: Step 1: Image data acquisition, using a scanning device to acquire image data of the model in multiple dimensions; Step 2: Data analysis, establish a three-dimensional spatial coordinate system, set the initial origin based on the image data obtained in step S1, and then plot the images in multiple dimensions to draw a spatial grid map; Step 3: Component modeling; Step 4: Feature calculation and correction. The reference characteristic line is corrected by running data through primitive leaf cascades, step-by-step superposition, and characteristic map correction methods. Step 5: Modeling and shaping; Step Six: Energy Efficiency Diagnosis, Performance Impact Analysis Based on Simulation Model; Step 7: Self-check and repair; The scanning device in step one includes a base, a housing fixed to the top of the base, an opening in the top of the housing, a movable seat movably installed inside the opening, an assembly movably installed on the top of the movable seat, fixed seats fixed at both ends of the housing, fixed slots on the fixed seats, a rotating seat rotatably installed inside the fixed slots, a movable frame welded to the side wall of the rotating seat, a slot and a limiting slot respectively on the movable frame, a scanning assembly movably installed inside the slot, and a displacement assembly slidably installed inside the limiting slot.

2. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: In step three, mathematical models are established for the compressor, combustion chamber, and turbine respectively; energy efficiency diagnosis and optimization are performed based on the gas turbine simulation model, including the impact of intake system degradation on the thermal performance of the gas turbine and the optimization of compressor water washing based on actual operating data. The compressor, combustion chamber, and turbine are all modeled using a modular modeling method for power system simulation.

3. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: In step five, the multi-dimensional spatial mesh maps obtained in steps S2 and S2 are combined with each other in three-dimensional spatial coordinates by using edge point interaction, and edge clipping is performed on the overlapping edge areas to establish a preliminary model.

4. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: In step seven, the preliminary model obtained in step S5 is self-mapped in multiple dimensions, and then compared and analyzed with the spatial grid map of multiple dimensions in step S2. Based on the differences analyzed, the details are modified, and the repaired model is self-mapped in multiple dimensions again and compared and analyzed with the image data of multiple dimensions in step S1. The details are revised again based on the differences until the final model is formed.

5. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: A differential gearbox is fixed to the side of the fixed base, a drive motor is fixedly installed on the side of the differential gearbox, a servo motor is fixedly installed on the side of the gearbox body, a screw is installed on the servo motor, a support plate is movably installed on the screw, and the top of the support plate is welded to the bottom of the movable base.

6. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: The housing has a fixed power mechanism inside, a stud is installed on the power mechanism, a threaded seat is movably installed on the stud, a lifting mechanism is fixed on the top of the threaded seat, a support base is fixed at one end of the lifting mechanism, and the support base is movably installed at the bottom of the movable base.

7. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 1, characterized in that: A support mechanism is fixedly installed inside the slot. A movable block and a motor base are fixed to one end of the support mechanism. A DC motor is fixedly installed on the motor base. Slider blocks are welded to the sides of the movable block and the motor base. A sliding groove is opened on the inner wall of the slot, and the slider is movably installed inside the sliding groove.

8. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 7, characterized in that: The DC motor is equipped with a threaded column, and the displacement assembly includes a scanning base, which is movably mounted on the threaded column. A reinforcing base is fixed to the side of the scanning base, and a camera and an auxiliary mechanism are fixed on the reinforcing base respectively. The camera is fixedly mounted between the auxiliary mechanisms.

9. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 8, characterized in that: The scanning base has an opening on one side, and a movable column is movably installed inside the opening. A limiting seat is movably installed on the movable column, and the limiting seat is movably installed inside the limiting groove.

10. The method for digital twin modeling and simulation of gas turbines based on a semi-physical model according to claim 9, characterized in that: The limiting seat has a limiting plate welded to its side. The diameter of the limiting plate is larger than the width of the limiting groove. A displacement mechanism is fixedly installed on one side of the limiting plate. One end of the movable column is movably installed inside the displacement mechanism.

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