Rapid alignment and adjustment amount accurate calculation method for steam turbine rotor shaft system

Abstract

The invention relates to a steam turbine rotor shaft system rapid alignment and adjustment amount accurate calculation method, which comprises the following steps: obtaining static geometric parameters of a shaft system, and constructing a dynamic resolving model based on a linkage formula group; the vertical displacement of the bearing bush is used as an input variable, and the circumferential variation and the opening variation of the front and rear paired wheels are calculated in real time; feeding back each parameter numerical value and the difference between the parameter numerical value and a target value in real time through a visual interface; and guiding a user to iteratively adjust the displacement of the bearing bush based on the feedback difference until all parameters meet the alignment precision standard. According to the method, multi-parameter coupling synchronous resolving and real-time visual guiding are achieved, the problems that a traditional method is low in efficiency, depends on experience and is high in rework rate are solved, the adjusting precision and the working efficiency are remarkably improved, and the technical threshold is lowered.

Description

Technical Field

[0001] This application relates to the field of electronic digital data technology, specifically to a method for rapid alignment and accurate calculation of adjustment amounts for a steam turbine rotor shaft system. Background Technology

[0002] Currently, the industry generally adopts the traditional manual calculation method based on experience and basic mechanical principles. Technicians manually measure basic parameters such as bearing spacing and wheel diameter according to the theory of "similar triangles" and calculate individual adjustment parameters step by step and in isolation. The whole process lacks a dynamic coupling and correlation mechanism between multiple parameters, and it is impossible to perform real-time visualization verification after the calculation is completed. It completely relies on the operator's personal experience to judge the rationality of the calculation results, which is a common operating method in the industry. The existing technology has the following main drawbacks: the purely manual calculation process is cumbersome, and it usually takes several hours to several days from calculation to verification, which seriously occupies the critical maintenance period; manual calculation is prone to omissions and it is difficult to handle the coupling effects between multiple parameters simultaneously, resulting in a rework rate of 15%-20% for shaft alignment; the quality of operation relies too much on the implicit experience of senior technicians, lacks unified standards and specifications, and has a long training cycle for new employees; the calculation process and results are presented in a static mode, making it impossible to observe the parameter change trend in real time during the adjustment process, resulting in high "trial and error" costs; This invention achieves a shift from tool-assisted decision-making to decision-making that reduces reliance on experience by constructing a dynamic solution algorithm for linked formula groups, integrating a real-time visualization feedback module, and introducing a closed-loop real-time decision support and visualization guidance mechanism verification process based on dynamic solution. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the purpose of this application is to provide a method for rapid alignment and accurate calculation of adjustment of turbine rotor shaft system.

[0004] The method for rapid alignment and accurate calculation of adjustment of a steam turbine rotor shaft system described in this application includes the following steps: S101. Obtain the static geometric parameters of the turbine shaft system. The static geometric parameters include at least the following: the distance from the front bearing to the front coupling (L2), the distance between the front and rear couplings (L3), the distance from the rear coupling to the rear bearing (L1), the diameter of the front coupling (Dq), and the diameter of the rear coupling (Dh). S102. Based on static geometric parameters, construct a dynamic solution model for shaft system adjustment parameters. The dynamic solution model is a set of linkage formulas, which takes the vertical displacement of the bearing bush (R1) as the input variable and dynamically solves the output of the circumferential change of the front wheel pair (R2), the circumferential change of the rear wheel pair (R3), the opening change of the front wheel pair (A1), and the opening change of the rear wheel pair (A2). S103. Receive the adjustment amount (R1) of the vertical displacement of the bearing bush input by the user; S104. Substitute the adjustment amount into the dynamic solution model, calculate and update the corresponding values ​​of the front wheel circumference change (R2), rear wheel circumference change (R3), front wheel opening change (A1), and rear wheel opening change (A2) in real time. S105. The values ​​of the vertical displacement of the bearing bush (R1), the circumferential change of the front wheel (R2), the circumferential change of the rear wheel (R3), the opening change of the front wheel (A1), and the opening change of the rear wheel (A2) calculated and updated in step S104 are fed back to the user in real time in a visual form, and the difference between each parameter and the preset target value is displayed at the same time. S106. Based on the difference reported in step S105, guide the user to execute steps S103 to S105 again to iteratively adjust and verify the vertical displacement (R1) of the bearing until all adjustment parameters meet the preset alignment accuracy standard.

[0005] Furthermore, in S101, the position data of the front and rear bearings and couplings of the turbine shaft system are collected by sensors. The preliminary positional relationship is obtained through high-precision positioning technology. The distance between each component is calculated and geometrically processed to obtain accurate distance results. Combined with the calibration dimensions of the coupling diameter measured by optical scanning, the distance and diameter data are integrated to construct a static geometric model and obtain a complete parameter set. If the parameters exceed the threshold, anomaly detection is triggered. Historical data is called up for comparison and analysis to determine whether the deviation is caused by actual changes in the components. The final analysis results are output, and a digital archive of the shaft system is obtained. All geometric parameters are stored for subsequent analysis.

[0006] Furthermore, in S102, an initial shaft system adjustment parameter set is constructed based on static geometric parameters. After classification and storage, a structured parameter base library is formed. A dynamic solution model is built, and the vertical displacement of the bearing bush is used as an input variable. The preliminary results of the circumferential change of the front and rear wheels are obtained through the linkage formula group. Then, the opening change logic is processed by the correlation operation of the linkage formula group to obtain the preliminary data of the opening change of the front and rear wheels. If the circumferential change exceeds the preset threshold, the calibration mechanism is triggered. The calibration value is obtained by comparing with the historical parameter library. If the opening change does not match the threshold, it is corrected by the data smoothing tool to obtain the final opening change data. All calibrated circumferential changes and the final opening change together constitute a complete set of output changes, which is stored in the system database for subsequent use.

[0007] Further, in S103, the radial offset of the front and rear wheels is calculated by using the vertical displacement adjustment amount (R1) of the bearing bush as input and the shaft system geometric relationship model. The axis tilt angle change of the front and rear wheels is calculated and determined based on the offset using the linkage geometric calculation formula group. Historical alignment data is obtained as a reference value and the calculated radial offset is compared with it. If the deviation exceeds the preset threshold, it is replaced with the correction offset corresponding to the historical reference value. The linkage formula group is re-executed using the correction radial offset to determine the final axis tilt angle change. The correction radial offset and the final axis tilt angle change are combined into a complete set of output parameters and stored in the shaft system adjustment database.

[0008] Furthermore, in S104, the adjustment amount is input into the dynamic calculation framework. The initial values ​​of the circumference and opening changes of the front and rear wheels are obtained through real-time calculation. When the circumference change exceeds the preset threshold, the automatic calibration mechanism is triggered to update the values. The correlation between the calibrated circumference change and the opening change is verified to obtain the set of verified changes. The geometric mapping model is called to calculate the comprehensive change trend and distribution characteristics of the front and rear wheels. Key change nodes are extracted and data smoothing is performed to obtain smooth trend data. The corresponding adjustment parameter set is generated and stored in the system database.

[0009] Furthermore, in S105, based on the updated vertical displacement of the bearing bush and the circumferential and opening changes of each pair of wheels calculated in S104, the corresponding preset target values ​​are read from the database. The vertical displacement deviation of the bearing bush, the circumferential deviation of the front pair of wheels, the circumferential deviation of the rear pair of wheels, the opening deviation of the rear pair of wheels, and the opening deviation of the front pair of wheels are calculated one by one. If any deviation exceeds the preset threshold, the corresponding parameter is marked as abnormal; otherwise, it is marked as normal. The calculated values ​​and status marks are integrated to generate a real-time visualized data set containing the current value, target value, deviation, and status of each parameter. The set is loaded through the visualization interface, and the specific values, target values, deviations, and abnormal statuses of all parameters are presented in columns using numerical tables combined with color differentiation.

[0010] Furthermore, in S106, when the deviation of any parameter in the deviation set of all parameters in S105 exceeds the calibration accuracy standard, the iteration state is marked as "continue"; otherwise, it is marked as "complete". The iteration continues, the parameter corresponding to the maximum deviation is identified, its historical adjustment record is obtained, the adjustment direction and magnitude of this adjustment are calculated, the adjustment suggestion value is obtained, the original input data is updated, and a new round of execution instructions is generated. This will automatically trigger the cyclic execution from S103 to S105, thereby obtaining the updated deviation set.

[0011] The method for rapid alignment and precise calculation of adjustment of turbine rotor shaft system described in this application has the advantage of reducing the time taken for the entire calculation and verification process from several hours in the traditional method to minutes, which greatly adapts to maintenance scenarios with tight schedules. By programming and solidifying a set of precise linkage formulas based on the characteristics of the turbine shaft system, omissions in manual calculations are avoided. At the same time, the dynamic coupling solution algorithm ensures the synchronous update of all related parameters and full coverage of linkage effects, so that the calculation deviation reaches a high standard (end face ≤ 0.02mm, circumference ≤ 0.03mm), and the rework rate is successfully reduced to meet industry standards. This invention solidifies the experience of senior technicians into standardized software processes and clear operating instructions, providing clear decision support through a real-time visual interface. Intermediate technicians can operate independently and accurately after short-term training, solving the problem of technology transfer. This invention achieves data visualization, process traceability, and standardized operation, effectively solving the core problem of transforming traditional maintenance models into digital and less-manned operations. Attached Figure Description

[0012] Figure 1 This application describes a method for rapid alignment and precise calculation of adjustment amounts for a steam turbine rotor shaft system. Figure 1 ; Figure 2 This application describes a method for rapid alignment and precise calculation of adjustment amounts for a steam turbine rotor shaft system. Figure 2 ; Figure 3 This application describes a method for rapid alignment and precise calculation of adjustment amounts for a steam turbine rotor shaft system. Figure 3 . Detailed Implementation

[0013] like Figures 1-3 As shown, this application implements the following in a semi-intelligent architecture based on dynamic coupling decomposition, real-time feedback, and closed-loop verification: Input basic geometric parameters such as bearing spacing (L1, L2, L3) and wheel diameter (Dq, Dh), as well as initial measurement values ​​(circumferential deviations R1, R2, R3, and opening values ​​A1, A2). Built-in dynamic solution algorithm with linked formula group for simultaneous calculation of multiple parameters; real-time display of parameter change trends and adjustment effects, providing graphical guidance; adjustment suggestions based on comparison of solution results and target values; saving data and process of each adjustment, supporting review and optimization; automatically verifying results according to industry standard (DL / T 811-2021) and generating adjustment reports.

[0014] In one embodiment, the four traditionally isolated centering adjustment formulas in the dynamic solution of the linkage formula group are integrated into a dynamic solution system to achieve "single parameter input and full parameter linkage update". The specific formula is as follows:

[0015] Equation 4 expresses R3 as a function of R2:

[0016] Substituting into Formula 3, we further express A2 as a function of R2, establishing a dynamic solution model with R1 (bearing displacement) as the sole input variable:

[0017] In one embodiment, the system interface is designed as a dual-pane layout, specifically as follows: The left side is the parameter input and adjustment panel, providing sliders or input boxes for users to modify R1; The right side is the dynamic feedback panel, which displays the values ​​of R2, R3, A1 and A2 and their change curves in real time; When the user drags the R1 slider, the values ​​on the right are immediately updated and highlighted in color: Green indicates that the parameter has entered the target range, yellow indicates that it is close to the target, and red indicates that it has deviated from the target. At the same time, the system draws an adjustment trend chart to show the relationship between R1 and A1 and A2, helping users to intuitively judge whether the adjustment direction is correct.

[0018] In one embodiment, the adjustment and verification of the closed-loop workflow is supported, specifically as follows: The user inputs the initial measurement data and target tolerance (end face ≤ 0.02 mm, circumference ≤ 0.03 mm). Adjusting R1 allows the system to calculate and display all related parameters in real time. The system automatically determines whether each parameter meets the standard and prompts on the interface with "It is recommended to continue to increase or decrease R1" or "The standard has been met and you can stop adjusting". Users follow the instructions to fine-tune until all parameters meet the standards. The system records the data for each adjustment, generates an adjustment log and a final report, and supports exporting to PDF or Excel format. Taking the centering adjustment of the high-pressure rotor of a steam turbine in a power plant as an example: Input parameters: L1=1200mm, L2=800mm, L3=600mm, Dq=800mm, Dh=750mm; Initial measurement: R1 = 0.50 mm (adjustment required); Target: A1≤0.02mm, A2≤0.02mm, R2≤0.03mm, R3≤0.03mm; The user adjusts R1 to 0.30mm, and the system displays the result in real time: R2=0.171mm, R3=0.257mm, A1=0.171mm, A2=0.201mm; System notification: A1 and A2 are still out of range; it is recommended to continue reducing R1. The user continues to adjust R1 to 0.10mm, and the system displays: R2=0.057mm, R3=0.086mm, A1=0.057mm, A2=0.067mm; System notification: All parameters have met the requirements; adjustment complete. The entire adjustment process takes about 3 minutes and requires no manual calculation or trial and error.

[0019] like Figures 1-3 As shown in the figure, the method for rapid alignment and accurate calculation of adjustment of a steam turbine rotor shaft system described in this application includes: like Figures 1-3 As shown, S101, obtain the static geometric parameters of the turbine shaft system. The static geometric parameters include at least the following: the distance from the front bearing to the front coupling (L2), the distance between the front and rear couplings (L3), the distance from the rear coupling to the rear bearing (L1), the diameter of the front coupling (Dq), and the diameter of the rear coupling (Dh).

[0020] Further, in step S101, the position data of the front bearing, front coupling, rear coupling and rear bearing in the turbine shaft system are collected by the sensor system, and the relative positions between the components are determined by high-precision positioning technology to obtain preliminary positional relationship data; Based on the preliminary positional relationship data, the distances from the front axle bush to the front wheel, the distances between the front and rear wheels, and the distance from the rear wheel to the rear axle bush are calculated. Geometric algorithms are then used to process the distance parameters to determine the accurate distance measurement results. Based on the accurate distance measurement results, the diameter parameters of the front and rear wheels are obtained by combining optical scanning technology. The scanning data is processed to calibrate the size information and obtain accurate diameter data. By integrating accurate diameter data and distance measurement results, a static geometric model of the turbine shaft system is constructed, generating a complete dataset of geometric parameters; After obtaining the complete geometric parameter dataset, if the distance parameter or diameter parameter in the dataset exceeds the preset threshold range, the anomaly detection mechanism is triggered to determine whether there is a measurement deviation or equipment component malfunction. Based on the judgment results of the anomaly detection mechanism, historical data is automatically retrieved for comparison and analysis to determine whether the anomaly is caused by actual changes in equipment components, and the final static geometric parameter analysis results are output. Based on the final static geometric parameter analysis results, a digital archive of the turbine shaft system is generated, storing all distance and diameter parameters for subsequent system calls and analysis.

[0021] Specifically, in step S101, in order to obtain the static geometric parameters of the turbine shaft system, including the distance from the front bearing to the front wheel (L2), the distance between the front and rear wheels (L3), the distance from the rear wheel to the rear bearing (L1), the diameter of the front wheel (Dq), and the diameter of the rear wheel (Dh), parameter extraction and analysis can be achieved through digital modeling and data processing technology. The turbine shaft system is fully scanned using 3D laser scanning technology to generate point cloud data. The data is then denoised and registered using point cloud processing software (CloudCompare) to generate an accurate 3D model. Key point coordinates are extracted based on the model, including: The coordinates of the center point of the front axle bearing are set to (0,0,0). The coordinates of the center point of the front wheel are (1500.5,0,0); The center point of the rear wheel is (3500.2, 0, 0); the center point of the rear axle bearing is (5000.8, 0, 0), in millimeters. By calculating the Euclidean distances between the points, we find that L2 is 1500.5 mm, L3 is 3500.2-1500.5=1999.7 mm, and L1 is 5000.8-3500.2=1500.6 mm. By analyzing the cross-sectional geometric features of the wheels using model slicing, the diameter Dq of the front wheel was extracted to be 800.3 mm, and the diameter Dh of the rear wheel was extracted to be 850.4 mm. The data is validated using algorithms. For example, it is checked whether L2+L3+L1 is close to the total length of the shaft system, i.e., 5000.8 mm. An error of less than 0.1% is considered reasonable. These parameters are input into the finite element analysis software (ANSYS), and static stress analysis is performed in conjunction with the material properties of the shaft system to ensure that the geometric parameters meet the strength requirements within the design range. Using the above method, precise static geometric parameters (L2=1500.5 mm, L3=1999.7 mm, L1=1500.6 mm, Dq=800.3 mm, Dh=850.4 mm) are obtained, and a complete chain logic from measurement to application is formed through data verification and mechanical analysis.

[0022] like Figures 1-3As shown in S102, based on static geometric parameters, a dynamic solution model for shaft system adjustment parameters is constructed. The dynamic solution model is a set of linkage formulas, which uses the vertical displacement of the bearing bush (R1) as the input variable and dynamically solves and outputs the circumferential change of the front wheel pair (R2), the circumferential change of the rear wheel pair (R3), the opening change of the front wheel pair (A1), and the opening change of the rear wheel pair (A2).

[0023] Furthermore, in step S102, an initial set of shaft system adjustment parameters is constructed using static geometric parameters, and the parameters are classified and stored using data processing tools to obtain a structured parameter base library; Based on a structured parameter base library, a framework for a dynamic solution model is built. The calculation logic of the linkage formula group is configured and the operation rules of the model are determined, with the vertical displacement of the bearing as the input variable data. Based on the model's calculation rules, real-time vertical displacement data of the bearing bush is obtained and input into the dynamic solution model. The pre-established linkage formula group is used for calculation to obtain preliminary results of the circumferential change of the front and rear wheels. Based on the preliminary results of the circumferential changes of the front and rear wheels, the logical relationship of the opening change is processed through the correlation calculation of the linkage formula group to obtain the preliminary data of the opening change of the front and rear wheels. If the circumferential change of the front wheel or the rear wheel exceeds the preset threshold range based on the preliminary data, the data calibration mechanism is triggered, and the historical parameter base library is called for comparison to determine the calibrated circumferential change data. Based on the calibrated circumferential change data, if the change in the opening of the front wheel or the rear wheel does not match the preset threshold range, the opening change is corrected using a data smoothing tool to obtain the final opening change data. By combining the final mouth opening change data and the calibrated circumferential change data, a complete set of output change values ​​is constructed and stored in the system database.

[0024] Specifically, in step S102, based on the obtained static geometric parameters of the turbine shaft system L2=1500.5 mm, L3=1999.7 mm, L1=1500.6 mm, Dq=800.3 mm, and Dh=850.4 mm, a dynamic solution model for the alignment adjustment of the rigid coupling can be established to realize the linkage calculation of the vertical displacement of the bearing and the changes in the circumference and opening of the coupling. The shaft system is simplified as a rigid rotor model supported at both ends. The front and rear wheels are considered to be rigidly connected. The vertical displacement R1 of the front axle bush is used as the only input variable, and the displacement of the rear axle bush is fixed at 0. Using the principle of similar triangles, the formulas for the change in circumference are derived as follows: the change in circumference of the front wheel pair R2 = R1 × (L3 + L1) / (L2 + L3 + L1), and the change in circumference of the rear wheel pair R3 = R1 × L1 / (L2 + L3 + L1). Based on an actual total length of 5000.8 mm, when the input R1 = 0.20 mm, R2 = 0.20 × (1999.7 + 1500.6) / 5000.8 ≈ 0.140 mm, and R3 = 0.20 × 1500.6 / 5000.8 ≈ 0.060 mm; The change in wheel opening is calculated based on the wheel radius and the axle tilt angle. The tilt angle θ≈R1 / L2 (small angle approximation, unit radians). Therefore, the change in front wheel opening A1=θ×Dq / 2≈(0.20 / 1500.5)×800.3 / 2≈0.053 mm, and the change in rear wheel opening A2=θ×(L3+L1)×Dh / 2≈(0.20 / 1500.5)×(1999.7+1500.6)×850.4 / 2≈0.199 mm. This linkage formula group is implemented through Python programming. By inputting different R1 values, it can output R2, R3, A1, and A2 in real time and automatically determine whether it meets the centering standard (circumferential deviation ≤ 0.15 mm, opening deviation ≤ 0.10 mm). By comparing the calculation results with the on-site dial indicator measurement data, the accuracy of the model can be confirmed if the error is controlled within 5%. This enables precise guidance and dynamic optimization of the bearing adjustment, allowing the coupling to quickly reach the design requirements for alignment.

[0025] like Figures 1-3 As shown, S103 receives the adjustment amount (R1) of the vertical displacement of the bearing bush input by the user.

[0026] Further, in step S103, the vertical displacement adjustment amount (R1) of the bearing bush is received as an input variable; The vertical displacement adjustment of the bearing bush is processed by a pre-established shaft system geometric relationship model to obtain the radial offset of the front and rear wheels. Based on the radial offset of the front and rear wheels, the change in the axle tilt angle is calculated using the linkage geometric calculation formula set, and the changes in the axle tilt angle of the front and rear wheels are determined. Obtain historical axis alignment data records and extract the reference value corresponding to the current radial offset from them; The radial offset of the front wheel and the radial offset of the rear wheel are compared with the historical alignment data records. If the deviation exceeds the preset threshold range, it is replaced with the corrected radial offset corresponding to the historical reference value to obtain the corrected radial offset of the front wheel and the corrected radial offset of the rear wheel. By re-executing the linkage geometry calculation formula group using the corrected radial offset of the front wheel and the corrected radial offset of the rear wheel, the final change in the tilt angle of the front wheel axis and the final change in the tilt angle of the rear wheel axis are determined. The corrected radial offset of the front wheel, the corrected radial offset of the rear wheel, the final change in the tilt angle of the front wheel axis, and the final change in the tilt angle of the rear wheel axis are combined into a complete set of output parameters and stored in the shaft system adjustment database.

[0027] Specifically, in step S103, for the adjustment amount of the vertical displacement (R1) of the bearing bush, the alignment adjustment process of the turbine shaft system is calculated and analyzed in detail using information technology. Assuming that the initial input value of R1 is 0.25 mm, based on the static geometric parameters of the shaft system L2=1600.2 mm, L3=2100.5 mm, L1=1400.3 mm, Dq=820.6 mm, Dh=880.7 mm, the shaft system is simplified into a rigid rotor structure through a preset algorithm model, and the displacement influence of each key point is automatically calculated. Using geometric proportions, the formula for calculating the change in circumference R2 of the front wheel is derived as follows: R2 = R1 × (L3 + L1) / (L2 + L3 + L1); After substituting the values, R2 = 0.25 × (2100.5 + 1400.3) / (1600.2 + 2100.5 + 1400.3) ≈ 0.164 mm; The formula for calculating the change in the circumference of the rear wheel, R3, is R3 = R1 × L1 / (L2 + L3 + L1); Substituting the values, R3 = 0.25 × 1400.3 / (1600.2 + 2100.5 + 1400.3) ≈ 0.065 mm; The change in mouth opening is automatically calculated based on the axis tilt angle θ≈R1 / L2, resulting in θ≈0.25 / 1600.2≈0.000156 radians; Change in front wheel opening: A1 = θ × Dq / 2 ≈ 0.000156 × 820.6 / 2 ≈ 0.064 mm; Change in rear wheel opening: A2 = θ × (L3 + L1) × Dh / 2 ≈ 0.000156 × (2100.5 + 1400.3) × 880.7 / 2 ≈ 0.241 mm; These calculation results are compared with the preset centering standards, which are circumferential deviation of no more than 0.18 mm and opening deviation of no more than 0.12 mm. The automatic analysis shows that R2 and R3 are within the standard range, while A2 exceeds the standard value. Based on this, adjustment suggestions are generated, suggesting that R1 needs to be fine-tuned to 0.18 mm to optimize the A2 value. The built-in error analysis module compares the calculated data with the measured values ​​in the historical database. The preset historical data A2 is 0.250 mm, and the error is: (0.241-0.250) / 0.250×100%≈-3.6%; Within acceptable limits, confirm the reliability of the calculations; All analysis results are stored in the database, and a revised parameter report is generated.

[0028] like Figures 1-3 As shown in S104, the adjustment amount is substituted into the dynamic solution model, and the corresponding values ​​of the front wheel circumference change (R2), rear wheel circumference change (R3), front wheel opening change (A1), and rear wheel opening change (A2) are calculated and updated in real time.

[0029] Furthermore, in step S104, by inputting the adjustment amount into the pre-built dynamic calculation framework, the real-time calculation process is started to obtain the initial values ​​of the front wheel circumference change, the rear wheel circumference change, the front wheel opening change, and the rear wheel opening change. The initial values ​​are compared with a preset threshold range. If the change in the circumference of the front wheel or the rear wheel exceeds the threshold range, an automatic calibration mechanism is triggered to update the change value. Based on the calibrated circumferential change, combined with the front wheel opening change and the rear wheel opening change, a correlation check is performed to determine whether there are inconsistent data points, and the set of changes after verification is obtained. By using the verified set of changes, a pre-established geometric mapping model is invoked to calculate the combined change trend of the front and rear wheels and determine the distribution characteristics of the combined change trend. Based on the distribution characteristics of the overall trend, key change nodes are extracted, and data smoothing is performed on the key change nodes to obtain smoothed trend data. By using the smoothed trend data, a corresponding set of adjustment parameters is generated and stored in the system database, completing the closed-loop processing of the entire calculation process.

[0030] Specifically, in step S104, the user's adjustment input for the vertical displacement (R1) of the bearing bush is received. For example, after the user adjusts R1 to 0.18 mm, this value is immediately substituted into the dynamic solution model for real-time calculation. Based on the shaft system geometric parameters L2=1600.2 mm, L3=2100.5 mm, and L1=1400.3 mm, a simplified rigid rotor model is adopted, and the circumferential change of the bearing bush is updated using a proportional distribution algorithm. R2 = R1 × (L3 + L1) / (L2 + L3 + L1) =0.18×(2100.5+1400.3) / (1600.2+2100.5+1400.3)≈0.118 mm; Change in the circumference of the rear wheel: R3 = R1 × L1 / (L2 + L3 + L1) = 0.18 × 1400.3 / (1600.2 + 2100.5 + 1400.3) ≈ 0.047 mm; The axis tilt angle θ = R1 / L2 = 0.18 / 1600.2 ≈ 0.000112 radians is automatically calculated, and the change in mouth opening is updated accordingly. The change in front wheel opening A1 = θ × Dq / 2 = 0.000112 × 820.6 / 2 ≈ 0.046 mm, and the change in rear wheel opening A2 = θ × (L3 + L1) × Dh / 2 = 0.000112 × (2100.5 + 1400.3) × 880.7 / 2 ≈ 0.173 mm; The updated values ​​of R2, R3, A1, and A2 were compared with the preset alignment standards. The standard for circumferential deviation was ≤0.18 mm, and the standard for opening deviation was ≤0.12 mm. The results showed that R2=0.118 mm and R3=0.047 mm both met the requirements, and A1=0.046 mm also met the requirements. However, although A2=0.173 mm was lower than before, it still exceeded the standard by 0.053 mm. Through iterative optimization algorithm, it is recommended to further fine-tune R1 to 0.14 mm so that A2 is close to the upper limit of the standard. The subsequent dynamic calculation model, combined with a temperature compensation factor of 0.95, corrected all changes, resulting in a corrected value of A2≈0.173×0.95≈0.164 mm. Although the value still exceeded the limit, the error was reduced. The process of this iteration was automatically recorded and the parameter curve in the database was updated to provide real-time reference data support for the next adjustment.

[0031] like Figures 1-3 As shown in step S105, the values ​​of the vertical displacement of the bearing bush (R1), the circumferential change of the front wheel (R2), the circumferential change of the rear wheel (R3), the opening change of the front wheel (A1), and the opening change of the rear wheel (A2) calculated and updated in step S104 are fed back to the user in real time in a visual form, and the difference between each parameter and the preset target value is displayed at the same time.

[0032] Further, in step S105, the values ​​of the vertical displacement of the bearing bush, the circumferential change of the front wheel, the circumferential change of the rear wheel, the opening change of the front wheel, and the opening change of the rear wheel, which were calculated and updated in step S104, are obtained. Read the preset target values ​​corresponding to each parameter from the system database; The difference between the vertical displacement of the bearing bush and the corresponding preset target value is calculated to obtain the vertical displacement deviation of the bearing bush. The difference between the change in the circumference of the front wheel and the corresponding preset target value is calculated to obtain the circumference deviation of the front wheel; The differences between the rear wheel circumference change, rear wheel opening change, and front wheel opening change and their corresponding preset target values ​​are calculated to obtain the rear wheel circumference deviation, rear wheel opening deviation, and front wheel opening deviation. If the vertical displacement deviation of the bearing bush, any circumferential deviation, or any opening deviation exceeds the preset deviation threshold range, the corresponding parameter is marked as abnormal; otherwise, it is marked as normal. Based on the calculated and updated values ​​and the abnormal status markers, a real-time visualized data set is generated, including the current value of each parameter, the preset target value, the deviation value, and the status marker. The real-time visualization interface loads a real-time visualization dataset, and displays the current value, preset target value, deviation value, and abnormal status of each parameter in a numerical table and color-coded manner.

[0033] Specifically, in step S105, during the processing of shaft alignment parameters, the latest vertical displacement R1 of the bearing bush is obtained as 0.25 mm through the built-in dynamic calculation module, and based on the shaft geometric parameters L4=1800.5 mm, L5=2200.8 mm, and L6=1500.4 mm; The change in the circumference of the front wheels was calculated using a linear interpolation algorithm. R2 = R1 × (L5 + L6) / (L4 + L5 + L6) =0.25×(2200.8+1500.4) / (1800.5+2200.8+1500.4)≈0.162 mm; And the change in the circumference of the rear wheel: R3 = R1 × L6 / (L4 + L5 + L6) = 0.25 × 1500.4 / (1800.5 + 2200.8 + 1500.4) ≈ 0.066 mm; Calculate the axis deflection angle φ = R1 / L4 = 0.25 / 1800.5 ≈ 0.000139 radians, and update the change in front wheel opening A1 = φ × D1 / 2 = 0.000139 × 850.3 / 2 ≈ 0.059 mm, and the change in rear wheel opening A2 = φ × (L5 + L6) × D2 / 2 = 0.000139 × (2200.8 + 1500.4) × 900.2 / 2 ≈ 0.232 mm; Comparing these calculation results with the preset target values, the target value for circumferential deviation is ≤0.20 mm, and the target value for mouth opening deviation is ≤0.15 mm. The analysis shows that R2=0.162 mm and R3=0.066 mm are both within the target range, and A1=0.059 mm is also within the range, but A2=0.232 mm exceeds the target value by 0.082 mm. The system automatically generates visual charts, displaying the differences between the current values ​​and target values ​​of R1, R2, R3, A1, and A2 through bar charts. The out-of-tolerance portion of A2 is highlighted in red, and the specific deviation amount of 0.082 mm is indicated next to the chart with a numerical label. The calculation process and comparison results of all parameters are stored in a historical data table and correlated with the equipment operating status, such as the vibration frequency of 3.2 Hz, to form the parameter change trend, which provides data support for subsequent optimization.

[0034] like Figures 1-3 As shown in step S106, based on the difference reported in step S105, the user is guided to execute steps S103 to S105 again to iteratively adjust and verify the vertical displacement (R1) of the bearing until all adjustment parameters meet the preset alignment accuracy standard.

[0035] Further, in step S106, the current deviation set of all parameters in step S105 is obtained; For each parameter deviation in the deviation set, if at least one deviation exceeds the preset correction accuracy standard, the iteration state is marked as continue; otherwise, the iteration state is marked as complete. When the iteration state is in the continuation state, the parameter corresponding to the maximum deviation is determined from the deviation set; Based on the parameter corresponding to the maximum deviation, obtain the historical adjustment record of that parameter in step S103; The proposed adjustment value is obtained by calculating the direction and magnitude of the current adjustment based on historical adjustment records. The input data of the corresponding parameter in step S103 is updated using the adjustment suggestion value to generate a new round of execution instructions; The automatic cyclical execution of steps S103 to S105 is triggered by a new round of execution instructions to obtain the updated deviation set.

[0036] Specifically, in step S106, during the shaft alignment iterative optimization process, an iterative loop is automatically started based on the differences reported in step S105. If out-of-tolerance parameters, such as the rear wheel opening change A2 exceeding 0.082 mm, are identified, a proportional correction algorithm is used to calculate the required vertical displacement adjustment of the bearing bush. ΔR1 = Excess tolerance × (L4 + L5 + L6) / (L5 + L6) =0.082×(1800.5+2200.8+1500.4) / (2200.8+1500.4) ≈0.082×5501.7 / 3721.2≈0.121 mm, and subtract the current R1 value as negative feedback, updating R1 to 0.25-0.121=0.129 mm; Re-entering the calculation module, using the shaft system geometric parameters L4=1800.5 mm, L7=1200.3 mm, and L8=2800.6 mm, the circumferential change of the front coupling is derived using the triangular similarity algorithm: R2 = ΔR1 × (L7 + L8) / (L4 + L7 + L8) =0.121×(1200.3+2800.6) / (1800.5+1200.3+2800.6)≈0.084 mm, the change in circumference of the rear wheel R3=ΔR1×L8 / (L4+L7+L8)=0.121×2800.6 / 5801.4≈0.058 mm, calculate the axis deflection angle θ=ΔR1 / L4=0.12 1 / 1800.5≈0.000067 radians, the change in front wheel opening A1=θ×D1 / 2=0.000067×850.3 / 2≈0.028 mm, the change in rear wheel opening A2=θ×(L7+L8)×D2 / 2=0.000067×(1200.3+2800.6)×900.2 / 2≈0.121 mm; The new parameters were compared with the preset targets: the circumferential deviation target was ≤0.18 mm, and the opening deviation target was ≤0.12 mm. The results showed that R2=0.084 mm, R3=0.058 mm, A1=0.028 mm, and A2=0.121 mm were all close to or within the range. The remaining deviation A2 exceeded 0.001 mm. The next round of adjustment ΔR1=0.001×5801.4 / 4000.9≈0.001 mm was calculated and iterated until all parameter deviations were less than the 0.01 mm threshold. The loop stopped and the number of iterations was recorded as 3. The final R1=0.128 mm. At the same time, the bearing load distribution data, such as the radial force of 45.6 Newtons, was correlated to perform multivariate convergence verification, forming a closed-loop optimization path to ensure that the shaft alignment accuracy gradually converged to the standard requirements.

[0037] The above description is merely a preferred embodiment of one or more embodiments of this specification and is not intended to limit the scope of one or more embodiments of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the protection scope of one or more embodiments of this specification.

Claims

1. A method for rapid alignment and precise calculation of adjustment amounts for a steam turbine rotor shaft system, characterized in that, include: S101. Obtain the static geometric parameters of the turbine shaft system; S102. Based on the static geometric parameters, a dynamic solution model is constructed. The dynamic solution model takes the vertical displacement of the bearing bush as the only input variable and outputs multiple related changes in the state of the coupling. S103. Receive the adjustment amount for the vertical displacement of the bearing bush input by the user; S104. Input the adjustment amount into the dynamic solution model, and calculate and update the changes in the states of the multiple associated wheels in real time; S105. The calculated and updated parameter values ​​and their differences from the corresponding preset target values ​​are fed back to the user in real time through visualization. S106. Based on the feedback difference, guide the user to iteratively adjust and verify the vertical displacement of the bearing until all parameters meet the preset alignment accuracy standard.

2. The method for rapid alignment and precise calculation of adjustment of a steam turbine rotor shaft system according to claim 1, characterized in that, The static geometric parameters are obtained by scanning and modeling the shaft system using three-dimensional laser scanning technology.

3. The method for rapid alignment and precise calculation of adjustment of a steam turbine rotor shaft system according to claim 2, characterized in that, Point cloud data is obtained through 3D laser scanning, processed to obtain a 3D model, and the bearing spacing and wheel diameter parameters are extracted from it.

4. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 1, characterized in that, The visual feedback is provided in the same graphical interface, with adjustment input controls on the left panel and the updated values ​​and differences of the changes in the wheel circumference and opening dynamically displayed on the right panel.

5. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 4, characterized in that, The difference status is distinguished by color-coding different parameters with green, yellow, and red, respectively indicating that the target has been met, the target is close to being met, and the target has not been met.

6. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 1, characterized in that, In S106, when a parameter fails to meet the standard, the system automatically calculates and prompts the adjustment direction and suggested adjustment amount for the vertical displacement of the bearing bush based on the current difference, in order to guide the user to perform the next round of operations.

7. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 6, characterized in that, By identifying the parameter with the largest current deviation and combining it with its historical adjustment records, the suggested adjustment amount is calculated.

8. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 1, characterized in that, During the real-time calculation of S104, if the calculated change value exceeds the preset threshold, an automatic calibration mechanism is triggered, and the calibrated value is used for feedback and iteration.

9. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 1, characterized in that, The preset alignment accuracy standard is that the end face deviation is ≤0.02mm and the circumferential deviation is ≤0.03mm.

10. The method for rapid alignment and precise calculation of adjustment amount of a steam turbine rotor shaft system according to claim 1, characterized in that, Also includes: Record the input data, solution results, difference status and final adjustment scheme for each iteration adjustment to obtain a traceable operation report containing the complete adjustment path.

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