Dewar base installation leveling method and leveling compensation tool

Abstract

The application relates to the technical field of nuclear fusion device installation, in particular to a Dewar base installation and leveling method and leveling compensation tool. The method comprises the following steps: measuring the contact surface data of the building embedded part and the Dewar base and fitting a compensation plane; the first and second compensation parts are customized and processed; after the compensation parts are in place, the target point coordinates are measured to perform coarse leveling; then, the synchronous jacking system, pressure-sensitive paper and feeler gauge are used to perform fine leveling and contact inspection, and the final precision requirement is met by filling gaskets. In the leveling compensation tool, the first compensation part compensates for the embedded part deviation, the second compensation part compensates for the Dewar base manufacturing deviation, and the contact surface shape is determined based on the measurement data fitting. Through the data-driven customized compensation and phased precise adjustment, the high-precision and high-contact-quality installation problem of heavy components under complex foundation conditions is solved.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion device installation technology, specifically to a Dewar base installation and leveling method and leveling compensation tooling. Background Technology

[0002] The Dewar pedestal is the first critical component in the installation of the main system of a nuclear fusion device. It serves as the support and foundation for all important equipment and plays a vital safety barrier role. The accuracy of its installation has a decisive impact on the subsequent installation quality of the main structure and all critical components.

[0003] A typical Dewar pedestal is enormous (e.g., approximately 18.8 meters in diameter and 4.6 meters in height) and can weigh hundreds of tons (e.g., approximately 360 tons). It is usually supported by multiple legs (e.g., 16) and skirts (e.g., 96 points). Its installation and acceptance requirements are extremely stringent, for example: the center axis position accuracy must be ±2mm, the height position accuracy ±3mm, and the circumferential reference plane position accuracy ±3mm, and the contact area with the legs must be greater than 90%.

[0004] However, the installation of Dewar bases faces multiple challenges: First, construction deviations exist in the building's embedded parts beneath them, making it difficult to guarantee flatness; second, the Dewar base itself is a large welded structure, and key contact surfaces such as the legs and the lower surface of the skirt are mostly non-machined surfaces, resulting in manufacturing deviations such as welding deformation; third, the components are extremely heavy, making it difficult to control the force balance of multiple supports during leveling. Traditional trial-and-error leveling methods are inefficient and cannot meet the extremely high contact area requirements while compensating for various deviations. Therefore, there is an urgent need for a method that can systematically compensate for deviations in building embedded parts and component manufacturing deviations, and achieve high-precision, high-efficiency leveling. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a Dewar base installation and leveling method and leveling compensation fixture. This method can systematically compensate for the planar deviation of the installation foundation and the deformation deviation of the component itself. Through data-driven customized processing and staged precision adjustment, it can achieve high-precision and high-efficiency installation and leveling of heavy components, ensuring that the final installation position and contact quality meet the stringent requirements.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a Dewar base installation and leveling method, comprising the following steps: S1, on-site data acquisition and fitting: using a laser tracker to measure the contact surface pose data of the building embedded part and the contact surface pose data of the Dewar base respectively; based on the measurement data, fitting the optimal compensation surface shape that matches the contact surface of the building embedded part and / or the contact surface of the Dewar base; S2, customized tooling processing: according to the optimal compensation surface shape fitted in step S1, constructing a three-dimensional model and processing a leveling compensation tooling; the leveling compensation tooling includes a first type of compensation component for compensating the pose deviation of the building embedded part and a second type of compensation component for compensating the pose deviation of the Dewar base body; wherein, in the first type of compensation component and / or the second type of compensation component, the contact surface of the building embedded part and / or the contact surface of the Dewar base are fitted together; The surface in contact with the compensation object is constructed as a customized non-planar surface that matches the optimal compensation surface shape; S3, coarse leveling: the customized leveling compensation fixture is placed between the corresponding contact surfaces to position the Dewar base; the measured spatial coordinates of the fixed target points set on the Dewar base body are measured using a laser tracker and compared with the theoretical spatial coordinates to guide the initial pose adjustment of the Dewar base; S4, fine leveling and contact inspection: a synchronous lifting system is used to fine-tune the Dewar base at its support points; the contact area at the support points is inspected using a contact pressure measuring tool, and the gap between the contact surfaces is measured using a gap measuring tool; based on the inspection and measurement results, compensation shims are filled into the gaps until the preset installation accuracy and contact area requirements are met.

[0007] In step S1, the contact surface of the building embedded part includes the upper surface of the Dewar base leg embedded part and the upper surface of the Dewar base skirt embedded part; the contact surface of the Dewar base includes the lower surface of the Dewar base leg and the lower surface of the Dewar base skirt.

[0008] In step S2, the first type of compensation component includes a Dewar base support leg adjustment plate disposed between the embedded part of the Dewar base support leg and the Dewar base support leg, and a Dewar base skirt anti-friction plate disposed between the embedded part of the Dewar base skirt and the Dewar base skirt; the second type of compensation component includes a spherical support adjustment plate disposed between the Dewar base support leg and the Dewar base, and a Dewar base skirt adjustment plate disposed between the Dewar base skirt and the Dewar base.

[0009] In step S1, the step of fitting the best compensation surface shape includes: when the flatness of a single building embedded part or contact surface exceeds a preset threshold, the contact surface is divided into multiple regions in the model, and the local best surface shape is fitted for each region to construct a block-type first type of compensation part model.

[0010] In step S3, the fixed target points are arranged according to the theoretical spatial coordinate positions set by the pre-established coordinate reference network.

[0011] In step S4, the synchronous lifting system is a hydraulic lifting system with PLC synchronous control function.

[0012] In step S4, the contact pressure measuring tool is pressure-sensitive paper, the gap measuring tool is a feeler gauge, and the compensation shim is a stainless steel sheet.

[0013] A leveling compensation fixture using a Dewar base mounting leveling method includes: a first type of compensation component for compensating for positional deviations of building embedded parts, the first type of compensation component including at least one plate whose lower surface is constructed as a customized non-planar shape, the non-planar shape being determined based on fitting measurement data of the corresponding building embedded part surface; and a second type of compensation component for compensating for positional deviations of the Dewar base body, the second type of compensation component including at least one plate whose upper surface is constructed as a customized non-planar shape, the non-planar shape being determined based on fitting measurement data of the corresponding Dewar base support surface.

[0014] The first type of compensation component includes a Dewar base support leg adjustment plate and a Dewar base skirt anti-friction plate; the second type of compensation component includes a spherical support adjustment plate and a Dewar base skirt adjustment plate.

[0015] The lower surface shape of the Dewar base leg adjustment plate is configured to compensate for the positional deviation of the upper surface of the Dewar base leg embedded part; the lower surface shape of the Dewar base skirt friction reduction plate is configured to compensate for the positional deviation of the upper surface of the Dewar base skirt embedded part; the upper surface shape of the spherical support adjustment plate is configured to compensate for the manufacturing positional deviation of the lower surface of the Dewar base leg; the upper surface shape of the Dewar base skirt adjustment plate is configured to compensate for the manufacturing positional deviation of the lower surface of the corresponding Dewar base skirt.

[0016] At least one of the first type of compensation components is a modular structure, which consists of multiple independent plates. The customized non-planar lower surfaces of these independent plates jointly compensate for the positional deviation of a corresponding building embedded component surface.

[0017] Beneficial effects 1. Systematic source compensation is achieved: Through the synergistic effect of the "first type of compensation component" and the "second type of compensation component", the present invention eliminates the two major types of deviations from the foundation and the components themselves, respectively, and the installation result is no longer subject to the cumulative errors of the previous construction and manufacturing.

[0018] 2. Data-driven and customized: This invention uses a laser tracker to measure actual field data with high precision, and uses software to fit the "optimal compensation plane". Based on this, the adjustment plate is designed and customized, realizing accurate compensation "adapting theory to reality" and avoiding the blindness of processing based on experience.

[0019] 3. Phased and Efficient Leveling: This invention divides the leveling process into two stages: "coarse leveling based on a customized adjustment plate" and "fine leveling based on contact detection." Coarse leveling uses fixed target points and global coordinate measurements to quickly approximate the target pose; fine leveling, combined with tools such as pressure-sensitive paper and feeler gauges, and assisted by a synchronous lifting system, efficiently optimizes the contact area and fills micron-level gaps, significantly improving leveling efficiency.

[0020] 4. Ensure contact quality: This invention innovatively combines the measurement of the contact area of ​​the pressure-sensitive paper with the measurement of the gap thickness of the feeler gauge, providing intuitive and quantitative guidance for the filling of the stainless steel sheet gasket, ensuring that the stringent requirement of a contact area of ​​more than 90% is ultimately met. This is the key to ensuring long-term structural stability.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart illustrating the overall process of installing and leveling the Dewar base according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the overall installation of the Dewar base according to an embodiment of the present invention; Figure 3 This is a top view of the embedded part of the Dewar base of the present invention; Figure 4 This is a cross-sectional view of the embedded part of the Dewar base of the present invention; Figure 5 This is a partial enlarged view of the Dewar base support leg adjustment plate of the present invention; Figure 6 This is a partial enlarged view of the spherical support adjustment plate of the present invention; Figure 7 This is a partial enlarged view of the skirt edge of the Dewar base of the present invention; Figure 8 This is a schematic diagram of the Dewar base of the present invention.

[0024] In the picture: 1. Dewar base support leg embedded part; 2. Dewar base support leg adjustment plate; 3. Dewar base support leg; 4. Spherical support adjustment plate; 5. Dewar base skirt embedded part; 6. Dewar base skirt friction reduction plate; 7. Dewar base skirt adjustment plate; 8. Dewar base; 9. Dewar base and support leg contact surface; 10. Dewar base and skirt contact surface. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: like Figures 1 to 8 As shown, this invention provides a high-precision installation and leveling method for a Dewar base of a nuclear fusion device, along with a dedicated adjustment plate assembly. The Dewar base 8 is a large annular welded structure, supported by circumferentially distributed Dewar base legs 3 and Dewar base skirts on embedded parts within the building foundation pit. The overall installation accuracy requirements for the Dewar base are: center position deviation ≤ ±2mm, height deviation ≤ ±3mm, and levelness deviation ≤ ±3mm. Furthermore, all support points must have a contact area greater than 90%, and these support points include 16 circumferentially distributed legs and 96 skirts.

[0027] The process of the high-precision installation and leveling method for the Dewar base of the nuclear fusion device is as follows: Figure 1 As shown, the specific steps include: a Dewar base installation and leveling method, step S1 is on-site data acquisition and fitting. First, within the building foundation pit, pre-embedded target points are used to establish a high-precision three-dimensional coordinate reference network using a laser tracker. Then, a high-precision laser tracker (such as a Leica AT960) is used for measurement. Furthermore, the upper surfaces of all the Dewar base leg embedded parts 1 and the Dewar base skirt embedded parts 5 were measured to obtain their three-dimensional point cloud data.

[0028] Further, the Dewar base body is measured: In the manufacturing workshop or temporary storage area, the lower surfaces of all Dewar base legs 3 and all Dewar base skirts are measured to collect their actual pose data after manufacturing. The above measurement data is then imported into professional fitting software (such as SpatialAnalyzer). The software uses algorithms such as least squares to calculate an "optimal compensation plane" (automatically fitted by the software) for each Dewar base-leg contact surface 9 and 10, and for each Dewar base-skirt contact surface 10. For embedded parts surfaces with flatness (≤2mm) exceeding the tolerance, they are manually divided and automatically fitted separately to provide a data basis for the subsequent design of segmented adjustment plates. This step generates a digital, optimal compensation surface model for each support point.

[0029] When the software analysis finds that the flatness error of the upper surface of a certain building embedded part (such as the Dewar base leg embedded part 1) exceeds the allowable value (e.g., ±5mm), the overall fitting will no longer be performed. The software will manually divide the contact surface between the Dewar base leg embedded part and the Dewar base leg adjustment plate into multiple regions (e.g., four quadrants) in the 3D model of the building embedded part, and fit a local optimal plane for each region. This operation provides the data basis for the subsequent processing of the segmented first type of adjustment plate.

[0030] Furthermore, in step S2, the leveling and compensation tooling is customized and processed. Based on all the "optimal compensation planes" fitted in S1, the processing model of the adjustment plate assembly is reverse-engineered in 3D design software (such as CATIA). Specifically: A first type of compensation component model is constructed to compensate for deviations in the embedded parts; a model for the Dewar base leg adjustment plate 2 is constructed: using a plane (or a group of segmented planes) fitted from the upper surface of the embedded part 1 as a cutting surface, a blank model of a preset thickness is trimmed in a unified coordinate system to generate its customized lower surface; a model for the Dewar base skirt friction reduction plate 6 is constructed: the principle is the same as above, generating its lower surface based on the fitting data of the embedded part 5; a second type of compensation component model is constructed to compensate for manufacturing deviations in the Dewar base body; a model for the spherical support adjustment plate 4 is constructed: using the contact surface 9 between the Dewar base and the leg, fitted from the lower surface of the Dewar base (corresponding to the position of the leg 3), as a cutting surface, generating its customized upper surface; a model for the Dewar base skirt adjustment plate 7 is constructed: the principle is the same as above, generating the contact surface 10 between the Dewar base and the skirt based on the fitting data of the lower surface of the Dewar base skirt. All adjustment plate models maintain their upper / lower non-working surfaces as planes. The constructed 3D model is exported as machining code, and the stainless steel slab is precision machined using a CNC machine tool (such as a large gantry milling machine) to obtain a non-standard leveling compensation fixture that matches the deviation of the measured surface - the contact surface 9 between the Dewar base and the support leg and the contact surface 10 between the Dewar base and the skirt.

[0031] Further, step S3 involves coarse leveling. At the installation site, the pre-processed first-type compensation components, the Dewar base leg adjustment plate 2 and the Dewar base skirt wear-reducing plate 6, are placed onto the corresponding embedded parts. A large crane is used to lift the Dewar base 8 into the foundation pit. At this time, the second-type compensation components, the spherical support adjustment plate 4 and the Dewar base skirt adjustment plate 7, have been pre-installed above the corresponding Dewar legs 3 and below the Dewar base skirt of the Dewar base 8. Multiple fixed targets (reflective spheres) are pre-welded onto the Dewar base 8 body. A laser tracker is used to measure the actual three-dimensional coordinates of these targets. The measured coordinates are compared in real-time with the theoretical coordinates set according to the coordinate reference network. Based on the direction and magnitude of the deviation, the Dewar base 8 is initially translated, raised, and leveled by adjusting the crane or using temporary jacks, so that its overall posture quickly approaches the theoretical position. The goal of this stage is to control the global positional error to the centimeter level.

[0032] Further, step S4 involves fine-tuning the level and conducting contact testing; after coarse leveling, large-tonnage hydraulic jacks are evenly distributed below the key support points (corresponding to some outriggers) of the Dewar base 8. These jacks are placed in advance before hoisting and are uniformly controlled by a PLC synchronous control system to ensure a smooth and synchronous lifting process.

[0033] Further, contact area inspection: PLC synchronous lifting combined with laser tracker measurement data is used for fine-tuning leveling, and pressure-sensitive paper is used simultaneously for contact inspection; pressure-sensitive paper is placed beforehand between the Dewar base leg 3 and the spherical support adjustment plate 4 to be inspected. The Dewar base 8 is synchronously and slightly lifted by the PLC system, pressure is applied and then released. The pressure-sensitive paper is removed; the area of ​​color change displayed on it is the actual contact area. If the contact area does not reach the requirement of greater than 90%, the outline of the non-contact area is recorded.

[0034] Gap Measurement and Compensation: Using feeler gauges of varying thicknesses, the gap size in non-contact areas is accurately measured. The feeler gauges are used to check edge gaps, while the gap in the middle is measured using pressure-sensitive paper and a thin plate.

[0035] Gasket filling: Based on the outline shown on the pressure-sensitive paper and the thickness measured by the feeler gauge, cut stainless steel sheets of the appropriate shape and thickness on site as compensation gaskets. After the lifting system is lifted, carefully fill them into the gaps. After all the gaskets are pressed tightly, weld the filling seams with fillet welds to ensure that the gaskets do not loosen.

[0036] Iterative Adjustment: Repeat steps S1-S3. If necessary, fine-tune the stroke of the jacks at different positions using the PLC system to optimize the minute posture of the Dewar base 8. After each round of adjustment, the global pose (center, height, and levelness) of the Dewar base 8 must be verified using a laser tracker. This process is repeated until the contact area of ​​all tested support points meets the requirement of greater than 90%, and the laser tracker measurement results confirm that the overall installation accuracy fully meets the standards of center position deviation ≤ ±2mm, height deviation ≤ ±3mm, and levelness deviation ≤ ±3mm.

[0037] Furthermore, unlike the above embodiments, a leveling and compensation fixture is used, such as... Figures 2 to 6 As shown, the leveling and compensation fixture of this invention mainly consists of two major categories and four subcategories of customized plates, which together constitute a systematic deviation compensation system: The first type of compensation component is used to compensate for deviations in building embedded parts: including: Dewar base support leg adjustment plate 2; such as... Figure 4 As shown, it is a stainless steel plate, set between the embedded part 1 and the Dewar base leg 3. Its lower surface is not a standard surface, but a customized non-plane processed by software fitting based on actual measurement data of the upper surface of the corresponding embedded part 1. The shape of this non-plane complements the positional deviation of the upper surface of the embedded part 1, thereby achieving "surface contact" during installation and eliminating the influence of embedded part construction errors from the source; Dewar base skirt friction-reducing plate 6: as shown... Figure 6 As shown, a stainless steel plate is positioned between the Dewar base skirt embedded part 5 and the Dewar base skirt. Its function is similar to that of the Dewar base support leg adjustment plate 2. Its lower surface is also a customized non-plane processed based on the measurement data of the upper surface of the corresponding skirt embedded part 5, used to compensate for the positional deviation of the embedded part.

[0038] Furthermore, the second type of compensating component is used to compensate for manufacturing deviations in the Dewar base body, including: spherical support adjustment plate 4; such as... Figure 5 As shown, its main body is a disc-shaped or circular plate, preferably a high-strength steel plate, set between the Dewar base leg 3 and the base plate of the Dewar base 8. Its upper surface is a customized non-planar surface. The shape of this non-planar surface is determined by fitting measured data of the corresponding position (welded surface, non-machined surface) of the lower surface of the Dewar base 8 corresponding to the leg 3, and is specifically used to compensate for manufacturing posture deviations such as welding deformation of the leg; Dewar base skirt adjustment plate 7: as shown... Figure 6 As shown, it is an irregularly shaped steel plate, welded and fixed to the skirt of the Dewar base 8, located below the skirt of the Dewar base. Its upper surface is a customized non-plane that is fitted and machined based on the measured data of the lower surface of the corresponding Dewar base skirt, used to compensate for manufacturing deviations of the skirt.

[0039] Preferably, when the surface flatness of a certain building embedded part (such as the embedded part 1 of the Dewar base leg) is extremely poor and the overall fitting of a plane cannot effectively compensate for it, its contact area can be divided into several sub-regions (e.g., four quadrants) in the model. At this time, the corresponding first type of compensation part (such as the Dewar base leg adjustment plate 2) can be designed as a block structure, that is, it is composed of multiple independent sub-plates. The lower surface of each sub-plate is fitted to compensate for the deviation of the corresponding sub-region, so as to adapt to the irregular embedded part surface more flexibly and accurately.

[0040] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0043] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for installing and leveling a Dewar base, characterized in that: Includes the following steps: S1. On-site data acquisition and fitting: Use a laser tracker to measure the contact surface pose data of the building embedded parts and the contact surface pose data of the Dewar base; based on the measurement data, fit the optimal compensation surface shape that matches the contact surface of the building embedded parts and / or the contact surface of the Dewar base; S2. Customized tooling processing: According to the optimal compensation surface shape fitted in step S1, construct a three-dimensional model and process the leveling compensation tooling; the leveling compensation tooling includes a first type of compensation component for compensating the pose deviation of the building embedded parts and a second type of compensation component for compensating the pose deviation of the Dewar base body; wherein, in the first type of compensation component and / or the second type of compensation component, the surface in contact with the object being compensated is constructed to match the optimal compensation surface shape. S3, Coarse Leveling: The customized leveling and compensation fixture is placed between the corresponding contact surfaces to position the Dewar base; the measured spatial coordinates of the fixed target points set on the Dewar base body are measured using a laser tracker and compared with the theoretical spatial coordinates to guide the initial positional adjustment of the Dewar base; S4, Fine Leveling and Contact Inspection: The synchronous lifting system is used to fine-tune the Dewar base at its support points; the contact area at the support points is inspected using a contact pressure measuring tool, and the gap between the contact surfaces is measured using a gap measuring tool; based on the inspection and measurement results, compensation shims are filled into the gaps until the preset installation accuracy and contact area requirements are met.

2. The Dewar base installation and leveling method according to claim 1, characterized in that: In step S1, the contact surface of the building embedded part includes the upper surface of the Dewar base leg embedded part (1) and the upper surface of the Dewar base skirt embedded part (5); the contact surface of the Dewar base includes the lower surface of the Dewar base leg (3) and the lower surface of the Dewar base skirt.

3. The Dewar base installation and leveling method according to claim 2, characterized in that: In step S2, the first type of compensation component includes a Dewar base support leg adjustment plate (2) disposed between the Dewar base support leg embedded part (1) and the Dewar base support leg (3), and a Dewar base skirt wear reduction plate (6) disposed between the Dewar base skirt embedded part (5) and the Dewar base skirt; the second type of compensation component includes a spherical support adjustment plate (4) disposed between the Dewar base support leg (3) and the Dewar base (8), and a Dewar base skirt adjustment plate (7) disposed between the Dewar base skirt and the Dewar base (8).

4. The Dewar base installation and leveling method according to claim 1, characterized in that: In step S1, the step of fitting the best compensation surface shape includes: when the flatness of a single building embedded part or contact surface exceeds a preset threshold, the contact surface is divided into multiple regions in the model, and the local best surface shape is fitted for each region to construct a block-type first type of compensation part model.

5. The Dewar base installation and leveling method according to claim 1, characterized in that: In step S3, the fixed target points are arranged according to the theoretical spatial coordinate positions set by the pre-established coordinate reference network.

6. The Dewar base installation and leveling method according to claim 1, characterized in that: In step S4, the synchronous lifting system is a hydraulic lifting system with PLC synchronous control function.

7. The Dewar base installation and leveling method according to claim 1, characterized in that: In step S4, the contact pressure measuring tool is pressure-sensitive paper, the gap measuring tool is a feeler gauge, and the compensation shim is a stainless steel sheet.

8. A leveling compensation fixture for using the Dewar base mounting and leveling method according to any one of claims 1-7, characterized in that: include: The first type of compensation component is used to compensate for the positional deviation of building embedded parts. The first type of compensation component includes at least one plate whose lower surface is constructed as a customized non-planar shape, which is determined based on fitting measurement data of the corresponding building embedded part surface. The second type of compensation component is used to compensate for the positional deviation of the Dewar base body. The second type of compensation component includes at least one plate whose upper surface is constructed as a customized non-planar shape, which is determined based on fitting measurement data of the corresponding Dewar base support surface.

9. The leveling and compensation fixture according to claim 8, characterized in that: The first type of compensation component includes a Dewar base support leg adjustment plate (2) and a Dewar base skirt friction reduction plate (6); the second type of compensation component includes a spherical support adjustment plate (4) and a Dewar base skirt adjustment plate (7).

10. The leveling and compensation fixture according to claim 9, characterized in that: The lower surface shape of the Dewar base support leg adjustment plate (2) is configured to compensate for the positional deviation of the upper surface of the Dewar base support leg embedded part (1); the lower surface shape of the Dewar base skirt friction reduction plate (6) is configured to compensate for the positional deviation of the upper surface of the Dewar base skirt embedded part (5); the upper surface shape of the spherical support adjustment plate (4) is configured to compensate for the manufacturing positional deviation of the lower surface of the Dewar base support leg (3); the upper surface shape of the Dewar base skirt adjustment plate (7) is configured to compensate for the manufacturing positional deviation of the lower surface of the corresponding Dewar base skirt.

11. The leveling and compensation fixture according to claim 8, characterized in that: At least one of the first type of compensation components is a modular structure, which consists of multiple independent plates. The customized non-planar lower surfaces of these independent plates jointly compensate for the positional deviation of a corresponding building embedded component surface.

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