A method for monitoring and dynamically adjusting a safe distance for hoisting operation of a gas turbine

Abstract

The present application relates to the field of engine hoisting operation control, and relates to a kind of engine hoisting operation safety distance monitoring dynamic adjustment method.The present application selects the associated obstacle monitoring point of each path point, sets the initial safety distance between the engine equipment of each path point and each associated obstacle monitoring point based on the operating parameters of engine equipment and hoisting machinery combined with current wind level;Real-time acquisition of the obstacle distance value between the current path point and the associated obstacle monitoring point of the engine equipment, analyzes the current basic risk coefficient, obtains the trend risk coefficient by combining the safety distance margin and early warning trigger degree of adjacent previous path point, judges whether the initial safety distance of adjacent next path point needs to be adjusted;If it needs to be adjusted, the initial safety distance is dynamically corrected based on the current safety distance margin and risk coefficient, the upper limit of the engine equipment operating speed of adjacent next path point is updated and the final safety distance is determined, to improve the safety and efficiency of engine hoisting operation.

Description

Technical Field

[0001] This invention relates to the field of gas turbine hoisting operation control, and specifically to a method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations. Background Technology

[0002] Gas turbines, as core large-scale power equipment in energy, power, and petrochemical fields, are characterized by their large size, heavy weight, and precise structure. They also require stringent precision in hoisting and positioning, and hoisting operations during on-site installation and maintenance are considered high-risk special operations. Gas turbine hoisting operations often take place in complex industrial sites with numerous obstacles and the presence of on-site construction and maintenance personnel. The safe distance between the gas turbine and obstacles during hoisting is a core control indicator for ensuring operational safety.

[0003] Existing technologies, such as Chinese Patent Publication No. CN121638875A, disclose a method and system for intelligent risk management and control of hoisting operations at prefabricated construction sites. This method relies on preset fixed safety thresholds to conduct distance monitoring, analyzes the correlation between stability and risk through data such as equipment operating parameters, hoisting point stress, and environmental weather, and then achieves risk distribution visualization and early warning management based on risk distance correction and clustering.

[0004] However, the existing technology has the following problems: 1. The existing technology sets a fixed threshold in advance based on environmental parameters. In actual operation, due to route deviation and operation deviation, the adaptability of the fixed threshold is poor. This results in the safety threshold being either too conservative and affecting efficiency, or too lenient and posing safety hazards, which does not match the actual risk level of hoisting.

[0005] 2. Most existing technologies rely solely on the comparison between the current measured distance and the safety threshold to trigger alarms, ignoring the changing trends of the safety margin in adjacent time periods throughout the hoisting process and past warning triggering situations. This results in a passive and lagging control method, making it difficult to achieve an effective balance between safety protection and operational efficiency. The accuracy of risk assessment is low, which can easily lead to false triggers and missed alarms. Summary of the Invention

[0006] This invention aims to address the shortcomings of existing technologies by providing a method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations. By dynamically selecting obstacle monitoring points and setting an initial safety distance based on wind force and equipment parameters, the method dynamically corrects the safety distance and operating speed limit by integrating both instantaneous and temporal trend risk coefficients, thus balancing safety and efficiency and improving early warning accuracy.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a method for dynamically adjusting the safety distance monitoring of gas turbine hoisting operations, including: acquiring the distribution of obstacles and the activity area of ​​personnel in the work site, and selecting associated obstacle monitoring points according to each path point on the designed hoisting path.

[0008] Based on the operating parameters of the gas turbine equipment and hoisting machinery, combined with the current wind force level, the initial safe distance between the gas turbine equipment and the associated obstacle monitoring point is set when the gas turbine equipment is located at each path point.

[0009] The system acquires the current path point on the hoisting path of the gas turbine equipment and the obstacle distance between the gas turbine equipment and the associated obstacle monitoring point in real time. It analyzes the current basic risk coefficient and, combined with the safety distance margin of the adjacent previous path point and the early warning triggering degree, obtains the trend risk coefficient of the current hoisting status.

[0010] Determine whether the initial safe distance to the next adjacent path point needs to be adjusted based on the current basic risk coefficient and trend risk coefficient.

[0011] If adjustments are needed, the initial safe distance of the next adjacent path point is dynamically corrected based on the current safe distance margin and risk coefficient, the upper limit of the operating speed of the ignition equipment on the next adjacent path is updated, and the final safe distance is determined.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention obtains the distribution of obstacles and the activity area of ​​personnel in the work site, selects the associated obstacle monitoring points according to each path point on the designed hoisting path, so that the associated obstacle monitoring points are highly matched with the actual space risk of hoisting, avoids redundant monitoring and missed monitoring, and improves the pertinence and reliability of safety management.

[0013] (2) This invention sets the initial safe distance between the gas turbine equipment and the associated obstacle monitoring point when the gas turbine equipment is located at each path point by combining the operating parameters of the gas turbine equipment and the hoisting machinery with the current wind level. It fully considers the braking characteristics of the equipment and the influence of the environment on the swing, so that the initial safe distance has a scientific and physical basis and improves the basic safety guarantee capability of the entire hoisting process.

[0014] (3) This invention obtains the current path point on the hoisting path of the current gas turbine equipment and the obstacle distance value between the current gas turbine equipment and the associated obstacle monitoring point in real time, analyzes the current basic risk coefficient, and obtains the trend risk coefficient of the current hoisting status by combining the safety distance margin of the adjacent previous path point and the early warning triggering degree. This realizes a two-dimensional risk assessment of real-time status and time-series trend, effectively improves the accuracy of risk judgment, and reduces the probability of false triggering and missed alarms.

[0015] (4) When the initial safety distance of the adjacent next path point needs to be adjusted, the present invention dynamically corrects the initial safety distance of the adjacent next path point based on the current safety distance margin and risk coefficient, updates the upper limit of the operating speed of the adjacent next path ignition equipment and determines the final safety distance, so as to achieve a dynamic balance between safety protection and operation efficiency, and improve the safety and continuity of gas turbine hoisting operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of 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.

[0017] Figure 1 This is a schematic diagram of the method steps of the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the specific steps involved in obtaining the safety distance margin and early warning triggering degree in this invention.

[0019] Figure 3 This is a schematic diagram of the steps for obtaining the current trend risk coefficient in this invention. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. Furthermore, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale.

[0021] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0022] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0023] Please see Figure 1 As shown, the present invention provides a method for dynamically adjusting the safety distance monitoring of gas turbine hoisting operations, including: S1, acquiring the distribution of obstacles and the area of ​​personnel activity in the work site, and selecting associated obstacle monitoring points according to each path point on the designed hoisting path.

[0024] Given that gas turbine hoisting involves large and precision equipment operations, with dynamic changes in posture and swing range during movement, uniform monitoring of all obstacles would result in data redundancy and ineffective warnings. Furthermore, the personnel activity area is a vertical cylindrical space, and monitoring only ground points cannot cover the risks associated with personnel standing at that height.

[0025] Furthermore, considering that the potential collision targets corresponding to different path points are completely different, it is necessary to accurately screen the obstacles and personnel boundaries that may be encountered based on the maximum swing range of the gas turbine at each path point in order to avoid missing risk points. Therefore, it is necessary to delineate the only associated obstacle monitoring point that may collide at that path point, with the boom pulley as the center and the maximum swing diameter as the range.

[0026] It should be further explained that the method for selecting the associated obstacle monitoring points includes: S11, retrieving the designed hoisting path for this hoisting operation from the gas turbine hoisting operation background database, and determining each path point according to a preset collection frequency. In a specific embodiment of the present invention, the collection frequency is set to 1 second, but the implementer may also set other specific values.

[0027] S12. Using the location of the boom pulley at each path point as the center and the farthest distance from the boom pulley to the gas turbine as the radius, construct the maximum movement range of the gas turbine for the corresponding path point.

[0028] S13. Based on the distribution of obstacles within the work site and the area of ​​personnel activity, if a point on the surface of an obstacle is located within the maximum movement range of the gas turbine equipment, then that point on the surface of the obstacle is marked as the associated obstacle monitoring point corresponding to that path point. The distribution of obstacles within the work site is determined during the hoisting operation by using a 3D laser scanner to perform a full-area scan of the work site, acquiring point cloud data of the obstacle surfaces, and generating the 3D contours and position coordinates of each obstacle after coordinate transformation, which are then stored in a background database. This process is existing technology and will not be described in detail here.

[0029] The personnel activity area is a three-dimensional columnar space defined by the ground projection boundary according to the construction site layout plan and on-site safety protection requirements, extending vertically upward from the ground projection boundary to a preset safe height. This preset safe height is based on the maximum height of a worker's arms when standing with their arms fully extended, as recorded in the worker's file; it is typically 2.5 to 3 meters, and in this embodiment, it is 2.8 meters.

[0030] S14. If a certain boundary range of a personnel activity area is located within the maximum movement range of the gas turbine equipment, then each point on that boundary range of the personnel activity area is marked as an associated obstacle monitoring point corresponding to that path point. The boundary range of the personnel activity area is the outer surface boundary corresponding to the three-dimensional cylindrical space.

[0031] This invention obtains the distribution of obstacles and the area of ​​personnel activity in the work site, and selects associated obstacle monitoring points according to each path point on the designed hoisting path. This makes the associated obstacle monitoring points highly matched with the actual spatial risks of hoisting, avoids redundant monitoring and missed monitoring, and improves the pertinence and reliability of safety management.

[0032] S2. Based on the operating parameters of the gas turbine equipment and hoisting machinery, combined with the current wind force level, set the initial safe distance between the gas turbine equipment and the associated obstacle monitoring point when it is located at each path point.

[0033] Considering that the safe distance for gas turbine hoisting cannot rely solely on empirical values, it must be determined comprehensively based on the equipment's braking performance and the site environment. Under ideal, windless conditions, the safe distance is determined by the upper limit of operating speed, braking deceleration, and response delay. However, on-site wind forces will cause significant swaying of the gas turbine; the longer the steel cable and the stronger the wind, the greater the sway deviation, rendering a fixed safe distance unsuitable for environmental changes. Furthermore, different gas turbine models exhibit significant differences in mass and inertia, necessitating the establishment of a dedicated deviation database through wind tunnel experiments. Therefore, it is necessary to add the basic braking distance to the wind-induced deviation distance to obtain an initial safe distance with a physical basis.

[0034] In a specific embodiment of the present invention, the method for obtaining the initial safety distance includes: S21, retrieving the upper limit of the operating speed of the gas turbine equipment and the emergency braking deceleration of the hoisting machinery at each path point from the operating parameters of the gas turbine equipment and hoisting machinery in the gas turbine hoisting operation background database, and calculating the basic safety distance at each path point. The emergency braking deceleration can be obtained from the technical parameter table of the hoisting machinery, and is usually provided by the equipment manufacturer. Furthermore, the basic safety distance refers to the minimum spatial distance required from triggering emergency braking to complete stop when the gas turbine equipment is running at a preset maximum speed under ideal windless conditions.

[0035] The calculation method for the basic safety distance is as follows: ; in Represents the basic safety distance. This represents the upper limit of the operating speed of the gas turbine equipment. Represents the braking response delay time. Represents emergency braking deceleration. This represents the theoretical braking distance when the upper speed limit of the gas turbine is reduced to 0, without considering the braking response delay. This represents the braking distance considering the impact of braking response delay time. For conventional electromechanical braking systems, the braking response delay time is typically within 0.1-0.5s, and in this embodiment, it is taken as 0.3s; implementers may also select other specific values.

[0036] S22. Obtain the current average wind speed at the construction site from the weather station data and convert it into the current wind force level. The current wind force level can be determined based on the standard wind speed range corresponding to each wind force level published by the weather station.

[0037] S23. Match the corresponding additional offset distance from the environmental offset distance table for the corresponding gas turbine type based on the gas turbine type, the current wind force level, and the length of the hoisting wire rope.

[0038] The method for obtaining the environmental offset distance table for the corresponding gas turbine type is as follows: W1. Each type of gas turbine equipment is suspended below the pulley at the top of the boom by a hoisting wire rope to form a single pendulum system.

[0039] W2. Place the pendulum system in a controlled wind tunnel environment and measure its maximum swing amplitude at each wind force level by adjusting it sequentially.

[0040] W3. Adjust the length of the hoisting wire rope to obtain the maximum swing amplitude under each wind force level.

[0041] W4. Calculate the maximum swing amplitude of each type of gas turbine equipment under different wind force levels with different lengths of hoisting steel wire ropes, and record it as the corresponding environmental offset distance.

[0042] W5. Based on the current gas turbine type, obtain the environmental offset distances corresponding to each wind force level for each length of the hoisting wire rope of the corresponding gas turbine type, and compile them into an environmental offset distance table for the corresponding gas turbine type.

[0043] S24. The sum of the basic safety distance and the corresponding additional offset distance of each path point is used as the initial safety distance.

[0044] This invention sets an initial safe distance between the gas turbine and associated obstacle monitoring points when the gas turbine is located at each path point, based on the operating parameters of the gas turbine and the hoisting machinery and the current wind level. It fully considers the braking characteristics of the equipment and the influence of the environment on the sway, so that the initial safe distance has a scientific and physical basis and improves the basic safety guarantee capability of the entire hoisting process.

[0045] S3. Analyze the current basic risk coefficient and obtain the trend risk coefficient of the current hoisting status.

[0046] Relying solely on whether the current distance exceeds the limit to assess risk can lead to problems such as delayed warnings, numerous false alarms, and missed warnings. While some locations may still have a safety margin, this margin is rapidly decreasing, and without identifying the trend in advance, collisions are highly likely within a short period. Therefore, it is necessary to calculate the current basic risk by using the minimum safety distance margin and the warning trigger rate, and compare the changes in the common point margins of preceding and following path points to obtain a trend risk coefficient, achieving a two-dimensional assessment of both instantaneous state and temporal changes.

[0047] Based on this, the specific implementation steps of S3 include: S31, real-time acquisition of the current path point on the hoisting path of the current gas turbine equipment and the obstacle distance value between the current gas turbine equipment and the associated obstacle monitoring point, and analysis of the current basic risk coefficient. The specific implementation steps are as follows: S311, acquisition of the minimum value of the safety distance margin and the early warning trigger degree among the associated obstacle monitoring points on the current path point.

[0048] S312. If the minimum value in the safety distance margin is negative, the ratio of the absolute value of the minimum value in the safety distance margin to the final safety distance of the current path point is recorded as the distance coefficient. The product of the distance coefficient and the warning trigger degree is recorded as the current basic risk coefficient. The current basic risk coefficient is in the range of 0-1.

[0049] S313. If the minimum value in the safety distance margin is positive, then the current basic risk coefficient is recorded as zero.

[0050] S32. Combine the safety distance margin of the adjacent previous path point and the warning trigger degree to obtain the trend risk coefficient of the current hoisting status.

[0051] Among them, such as Figure 2 As shown, the method for obtaining the safety distance margin and the warning trigger degree includes: T1, obtaining the minimum distance between each associated obstacle monitoring point corresponding to the current path point and the outer surface of the gas turbine equipment, and recording it as the obstacle distance value between the current gas turbine equipment and the associated obstacle monitoring point.

[0052] T2. Obtain the difference between the obstacle distance value and the final safe distance of the current path point, and record it as the safe distance margin. If the safe distance margin corresponding to a certain associated obstacle monitoring point is less than zero, then it is determined that the associated obstacle monitoring point triggers an early warning.

[0053] T3. Calculate the total number of associated obstacle monitoring points and the number of associated obstacle monitoring points that have triggered the warning. The ratio of this number to the total number of associated obstacle monitoring points is recorded as the warning triggering degree.

[0054] T4. Store the safety distance margin and early warning triggering degree of each associated obstacle monitoring point on the current path point in the gas turbine hoisting operation background database.

[0055] In addition, such as Figure 3 As shown, the current method for obtaining the trend risk coefficient includes: S321, obtaining all associated obstacle monitoring points on the current path point that are the same as those on the previous path point, and recording them as common associated obstacle monitoring points. The previous path point refers to the path point corresponding to 1 second before the current time point.

[0056] S322. Obtain the average current safe distance margin of each shared associated obstacle monitoring point, and record each associated obstacle monitoring point whose safe distance margin is less than the average current safe distance margin as a candidate risk point.

[0057] S323. Obtain the historical safety distance margin corresponding to each candidate risk point on the previous path point from the gas turbine hoisting operation background database, and record the difference between it and the current safety distance margin as the margin change.

[0058] S324. If the change in the margin of a candidate risk point is greater than zero, the ratio of the change in the margin of the candidate risk point to the historical safety distance margin of the candidate risk point is recorded as the corresponding trend risk coefficient, and the maximum value is recorded as the current trend risk coefficient. A change in margin greater than zero indicates that the current safety distance margin is decreasing relative to the safety distance margin of the previous path point. Therefore, the larger the change in margin, i.e., the greater the reduction, the greater the trend risk.

[0059] S325. If the change in the margin of each candidate risk point is less than or equal to zero, the ratio of the average change in the margin of each candidate risk point to the average historical safety distance margin is recorded as the current trend risk coefficient. If the change in margin is less than or equal to zero, it means that the current safety distance margin is increasing relative to the safety distance margin of the previous path point. Therefore, the smaller the change in margin, that is, the greater the increase in safety distance margin, the smaller the trend risk. In addition, it should be noted that the value range of the trend risk coefficient mentioned above is [-1, 1]. When the absolute value of the change in margin is greater than the average historical safety distance margin, the current trend risk coefficient is recorded as -1.

[0060] This invention acquires in real time the current path point on the hoisting path of the gas turbine equipment and the obstacle distance value between the current gas turbine equipment and the associated obstacle monitoring point, analyzes the current basic risk coefficient, and combines the safety distance margin of the adjacent previous path point and the early warning triggering degree to obtain the trend risk coefficient of the current hoisting status. This enables a two-dimensional risk assessment of real-time status and time-series trend, effectively improving the accuracy of risk judgment and reducing the probability of false triggering and missed alarms.

[0061] S4. Determine whether the initial safe distance to the next adjacent path point needs to be adjusted based on the current basic risk coefficient and trend risk coefficient.

[0062] Considering that the hoisting process needs to balance safety and operational efficiency, blindly increasing the safety distance will slow down the progress, while not adjusting it at all poses hidden dangers. When the foundation risk coefficient is 0 and the trend is stable, it indicates that the current state is safe. However, if the safety distance margin relative to the previous path point continues to decrease, it means that the risk is approaching, and the safety distance needs to be increased in advance. When the foundation already has risks and the trend continues to worsen, it means that the danger is continuing to expand, and mandatory correction is necessary. Therefore, it is necessary to establish a combined judgment rule to ensure a balance between safety and efficiency.

[0063] Based on this, in a specific embodiment of the present invention, the specific steps for determining whether the initial safety distance of the adjacent next path point needs to be adjusted include: S41, if the current basic risk coefficient is zero and the current trend risk coefficient is equal to zero, then it is determined that the initial safety distance of the adjacent next path point does not need to be adjusted.

[0064] S42. If the current basic risk coefficient is zero and the current trend risk coefficient is less than zero, then the initial safe distance of the next adjacent path point needs to be adjusted.

[0065] S43. If the current basic risk coefficient is greater than zero, then the initial safe distance of the next adjacent path point needs to be adjusted.

[0066] This invention determines whether the initial safety distance of the next adjacent path point needs to be adjusted based on the current basic risk coefficient and the trend risk coefficient. It achieves a specific quantification of safety distance adjustment triggering based on the current basic risk coefficient and the current trend risk coefficient, reduces ineffective adjustments, improves early warning reliability, and achieves a dynamic balance between safety protection and operational efficiency.

[0067] S5. If adjustments are needed, dynamically correct the initial safe distance of the next adjacent path point based on the current safe distance margin and risk coefficient, update the upper limit of the operating speed of the ignition equipment on the next adjacent path, and determine the final safe distance.

[0068] Considering the need for differentiated adjustment strategies across different risk scenarios, for example, when the trend is deteriorating but there is no immediate real-time risk, the safety distance can be appropriately relaxed within the allowable speed range; when real-time risk has emerged and continues to worsen, the safety distance must be increased according to the overall risk. Simultaneously, in the absence of risk, shortening the safety distance can be considered, but the upper limit of operating speed must match the safety distance. If the current speed exceeds the upper limit of operating speed after shortening the safety distance, to maintain efficiency, shortening the safety distance can be abandoned to preserve the original speed for efficient operation. Therefore, it is necessary to calculate correction values ​​for each scenario, and combine the current operating speed to determine the final safety distance and speed limit, achieving dynamic closed-loop control.

[0069] Based on this, the specific implementation steps of S5 include: S51, if the current basic risk coefficient is zero and the current trend risk coefficient is less than zero, then the product of the current trend risk coefficient and the initial safety distance is recorded as the corrected safety distance, and the sum of the corrected and initial safety distances is recorded as the safety distance to be determined. This achieves the reduction of the initial safety distance.

[0070] S52. Based on the undetermined safe distance and the undetermined upper limit of the operating speed of the hoisting machinery under emergency braking deceleration, and combined with the current operating speed of the gas turbine equipment, determine the final safe distance to the next adjacent path point and the upper limit of the gas turbine equipment's operating speed. The specific implementation steps are as follows: S521. Obtain the current operating speed of the gas turbine equipment based on the distance between the next adjacent path point and the current path point.

[0071] The formula for calculating the undetermined upper limit of the operating speed is as follows: ; in This represents the undetermined upper limit of the operating speed. The safe distance is an undetermined value, where the above formula is derived from... Extract It was transformed.

[0072] S522. If the current operating speed of the gas turbine equipment is greater than the undetermined upper limit of the operating speed of the gas turbine equipment, then the final safe distance of the next path point shall be maintained at the initial safe distance, and the upper limit of the operating speed of the gas turbine equipment at the next path point shall remain unchanged.

[0073] S523. If the current operating speed of the gas turbine equipment is less than the undetermined upper limit of the operating speed, the undetermined safety distance is used as the final safety distance of the next path point, and the undetermined upper limit of the operating speed of the gas turbine equipment is updated with the undetermined upper limit of the operating speed.

[0074] S53. If the current basic risk coefficient is greater than zero, the current basic risk coefficient and the current trend risk coefficient are weighted and summed to obtain the comprehensive risk coefficient.

[0075] Considering that the current basic risk coefficient directly represents the instantaneous risk of the hoisting operation at that path point, while the current trend risk coefficient represents the potential risk trend, the current instantaneous risk should take priority over the risk trend, that is, the weight of the previous basic risk coefficient should be greater than the weight of the current trend risk coefficient; and considering that if the current trend risk coefficient is greater than zero, it means that the safety distance margin is continuously decreasing and the risk is deteriorating, in this case, the instantaneous risk and the deteriorating risk trend should be superimposed. Therefore, in this embodiment, the weights of the current basic risk coefficient and the current trend risk coefficient are set to 60% and 40% respectively. The implementer can also set other specific values, but the sum of the two is 1.

[0076] If the current trend risk coefficient is less than zero, it indicates that the safety margin is increasing and the risk is improving. At this time, although the current risk is trending in a positive direction, the current basic risk is the main influencing factor. To avoid the positive risk trend offsetting the current actual risk, in this embodiment, the weights of the current basic risk coefficient and the current trend risk coefficient are set to 90% and 10% respectively. Implementers can also set other specific values, but the sum of the two is 1.

[0077] S54. The product of the comprehensive risk coefficient and the initial safety distance is recorded as the corrected safety distance, and the sum of the corrected safety distance and the initial safety distance is recorded as the final safety distance.

[0078] When the initial safety distance of an adjacent path point needs to be adjusted, this invention dynamically corrects the initial safety distance of the adjacent path point based on the current safety distance margin and risk coefficient, updates the upper limit of the operating speed of the ignition equipment on the adjacent path, and determines the final safety distance, thereby achieving a dynamic balance between safety protection and operational efficiency, and improving the safety and continuity of gas turbine hoisting operations.

[0079] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product.

[0080] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0081] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0082] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0083] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations, characterized in that, include: Obtain the distribution of obstacles and the area where personnel are active in the work site, and select associated obstacle monitoring points according to each path point on the designed hoisting path; Based on the operating parameters of the gas turbine equipment and hoisting machinery, combined with the current wind force level, the initial safe distance between the gas turbine equipment and the associated obstacle monitoring point is set when the gas turbine equipment is located at each path point; The system acquires the current path point on the hoisting path of the gas turbine equipment and the obstacle distance between the gas turbine equipment and the associated obstacle monitoring point in real time. It analyzes the current basic risk coefficient and, combined with the safety distance margin of the adjacent previous path point and the early warning triggering degree, obtains the trend risk coefficient of the current hoisting status. Determine whether the initial safe distance between adjacent next path points needs to be adjusted based on the current basic risk coefficient and trend risk coefficient. If adjustments are needed, the initial safe distance of the next adjacent path point is dynamically corrected based on the current safe distance margin and risk coefficient, the upper limit of the operating speed of the ignition equipment on the next adjacent path is updated, and the final safe distance is determined. The method for obtaining the safety distance margin and the warning trigger level: Obtain the minimum distance between each associated obstacle monitoring point corresponding to the current path point and the outer surface of the gas turbine equipment, and record it as the obstacle distance value between the current gas turbine equipment and the associated obstacle monitoring point; The difference between the obstacle distance value and the final safe distance of the current path point is obtained and recorded as the safe distance margin. If the safe distance margin corresponding to a certain associated obstacle monitoring point is less than zero, it is determined that the associated obstacle monitoring point triggers an early warning. The total number of associated obstacle monitoring points and the number of associated obstacle monitoring points that have triggered an early warning are counted. The ratio of the number of associated obstacle monitoring points that have triggered an early warning to the total number of associated obstacle monitoring points is recorded as the early warning triggering degree. Store the safety distance margin and early warning triggering degree of each associated obstacle monitoring point on the current path point in the gas turbine hoisting operation background database; The method for obtaining the basic risk coefficient of the current hoisting status includes: Obtain the minimum safe distance margin and warning trigger degree among the corresponding safety distance margins of all associated obstacle monitoring points on the current path point; If the minimum value in the safety distance margin is negative, the ratio of the absolute value of the minimum value in the safety distance margin to the final safety distance of the current path point is recorded as the distance coefficient. Then, the product of the distance coefficient and the warning trigger degree is recorded as the current basic risk coefficient. If the minimum value in the safety distance margin is positive, then the current basic risk coefficient is recorded as zero; The methods for obtaining the trend risk coefficient mentioned above include: Get the common obstacle monitoring points that are the same as those on the previous path point among the various associated obstacle monitoring points on the current path point; record them as common associated obstacle monitoring points. Obtain the average current safe distance margin of each shared associated obstacle monitoring point, and record each associated obstacle monitoring point whose safe distance margin is less than the average current safe distance margin as a candidate risk point; The historical safety distance margin corresponding to each candidate risk point on the previous path point is obtained from the gas turbine hoisting operation background database, and the difference between the historical safety distance margin and the current safety distance margin is recorded as the margin change. If the change in the margin of a candidate risk point is greater than zero, the ratio of the change in the margin of the candidate risk point to the historical safety distance margin of the candidate risk point is recorded as the corresponding trend risk coefficient, and the maximum value is recorded as the current trend risk coefficient. If the change in the margin of each candidate risk point is less than or equal to zero, then the ratio of the average change in the margin of each candidate risk point to the average historical safe distance margin is recorded as the current trend risk coefficient.

2. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 1, characterized in that, The method for selecting the associated obstacle monitoring points includes: The design hoisting path for this hoisting operation is retrieved from the gas turbine hoisting operation background database, and each path point is determined according to the preset collection frequency. With the location of the boom pulley at each path point as the center and the farthest distance from the boom pulley to the gas turbine as the radius, construct the maximum movement range of the gas turbine at the corresponding path point; Based on the distribution of obstacles in the work area and the area of ​​personnel activity, if a point on the surface of an obstacle is located within the maximum movement range of the gas turbine equipment, then that point on the surface of the obstacle is marked as the associated obstacle monitoring point corresponding to that path point. If a certain boundary of a personnel activity area is located within the maximum movement range of the gas turbine equipment, then each point on that boundary of the personnel activity area is marked as the associated obstacle monitoring point corresponding to that path point.

3. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 1, characterized in that, The method for obtaining the initial safe distance: From the operating parameters of the gas turbine equipment and hoisting machinery in the gas turbine hoisting operation background database, retrieve the upper limit of the operating speed of the gas turbine equipment and the emergency braking deceleration of the hoisting machinery at each path point, and calculate the basic safety distance at each path point; Obtain the current average wind speed at the construction site from the weather station data and convert it into the current wind force level; Based on the gas turbine type, current wind force level, and hoisting wire rope length, match the corresponding additional offset distance from the environmental offset distance table for the corresponding gas turbine type; The sum of the basic safe distance and the corresponding additional offset distance for each path point is used as the initial safe distance.

4. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 3, characterized in that, The method for obtaining the environmental offset distance table for the corresponding gas turbine type: Various types of gas turbine equipment are suspended from the pulley at the top of the boom by lifting steel wire ropes, forming a single pendulum system; The pendulum system was placed in a controlled wind tunnel environment, and its maximum swing amplitude was measured at each wind force level by adjusting it sequentially. Adjust the length of the hoisting wire rope to obtain the maximum swing amplitude under each wind force level; The maximum swing amplitude of various types of gas turbine equipment under different lengths of hoisting steel wire ropes at different wind force levels was statistically analyzed and recorded as the corresponding environmental offset distance. Based on the current gas turbine type, obtain the environmental offset distances corresponding to each wind force level for each length of the hoisting wire rope of the corresponding gas turbine type, and compile them into an environmental offset distance table for the corresponding gas turbine type.

5. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 1, characterized in that, The specific steps for determining whether the initial safe distance between adjacent subsequent path points needs to be adjusted include: If the current basic risk coefficient is zero and the current trend risk coefficient is zero, then the initial safe distance of the next adjacent path point does not need to be adjusted. If the current basic risk coefficient is zero and the current trend risk coefficient is less than zero, then the initial safe distance of the next adjacent path point needs to be adjusted. If the current basic risk coefficient is greater than zero, then the initial safe distance of the next adjacent path point needs to be adjusted.

6. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 1, characterized in that, The specific method for updating the upper limit of the operating speed of the adjacent subsequent path igniter equipment and determining the final safe distance includes: If the current basic risk coefficient is zero and the current trend risk coefficient is less than zero, then the product of the current trend risk coefficient and the initial safety distance is recorded as the corrected safety distance, and the sum of the corrected and the initial safety distance is recorded as the undetermined safety distance value. Based on the undetermined safe distance and the undetermined upper limit of the operating speed of the hoisting machinery under emergency braking deceleration, the final safe distance of the next adjacent path point and the upper limit of the operating speed of the gas turbine equipment are determined in combination with the current operating speed of the gas turbine equipment. If the current basic risk coefficient is greater than zero, then the current basic risk coefficient and the current trend risk coefficient are weighted and summed to obtain the comprehensive risk coefficient; The product of the comprehensive risk coefficient and the initial safety distance is denoted as the corrected safety distance, and the sum of the corrected safety distance and the initial safety distance is denoted as the final safety distance.

7. The method for dynamically adjusting the safety distance monitoring during gas turbine hoisting operations according to claim 6, characterized in that, The steps for determining the final safe distance between adjacent path points and the upper limit of the operating speed of the gas turbine equipment include: The current operating speed of the gas turbine is obtained based on the distance between the adjacent previous path point and the current path point. If the current operating speed of the gas turbine is greater than the undetermined upper limit of the gas turbine's operating speed, then the final safe distance of the next path point will be maintained at the initial safe distance, and the upper limit of the gas turbine's operating speed at the next path point will remain unchanged. If the current operating speed of the gas turbine is less than the undetermined upper limit of operating speed, the undetermined safety distance will be used as the final safety distance of the next path point, and the upper limit of operating speed of the gas turbine will be updated with the undetermined upper limit of operating speed.

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