Method and device for identifying influence range of flying objects on nuclear steam turbine

Abstract

The application provides a method and device for identifying the influence range of a nuclear power turbine flying object. The method comprises: obtaining a first flying area of a turbine flying object in a nuclear power plant site; the first flying area is a flying area of the turbine flying object towards a target plant building in the nuclear power plant site; determining a first building item in the target plant building located in the first flying area based on building item information of the target plant building; and in response to the first building item comprising a plurality of building items, determining a second building item affected by the turbine flying object among the plurality of building items based on a first shielding condition between the plurality of building items. The application can improve the identification accuracy of the influence range of the turbine flying object by determining a plurality of building items in the target plant building located in the flying area of the turbine flying object and determining the final building item affected by the turbine flying object based on the shielding condition between the plurality of building items.

Description

Technical Field

[0001] This application relates to the field of nuclear power technology, specifically to a method and apparatus for identifying the influence range of projectiles from nuclear power turbines. Background Technology

[0002] During high-speed operation, the rotor blades of a nuclear power plant's steam turbine generator unit may break off and fly out under extreme conditions. The resulting turbine ejecta has extremely high kinetic energy, and if it were to collide with a critical building within the nuclear power plant, it would pose a serious threat to nuclear safety.

[0003] Currently, the identification of the impact range of turbine projectiles mainly relies on manual experience, resulting in highly subjective judgments and difficulty in guaranteeing accuracy. This limitation is particularly pronounced in unfavorable plant layouts such as staggered or T-shaped arrangements, highlighting significant safety hazards and failing to meet the practical engineering needs of nuclear power plant safety analysis and layout optimization. Summary of the Invention

[0004] The main objective of this application is to propose a method and apparatus for identifying the influence range of nuclear power turbine projectiles, aiming to improve the accuracy of identifying the influence range of turbine projectiles.

[0005] This application provides a method for identifying the impact range of nuclear power turbine projectiles, comprising: acquiring a first projectile area within the nuclear power plant area; the first projectile area being the projectile area from which the turbine projectiles project toward a target building within the nuclear power plant area; determining a first building within the target building located within the first projectile area based on building information of the target building; and, in response to the first building including multiple building items, determining a second building among the multiple building items affected by the turbine projectiles based on a first obstruction situation between the multiple building items.

[0006] In one embodiment, the steam turbine is arranged within the nuclear power plant area; obtaining the first ejection area of ​​the steam turbine ejection within the nuclear power plant area includes: based on the arrangement orientation of the steam turbine, taking the ejection source point as the center and the maximum ejection distance of the ejection within the nuclear power plant area as the radius, and along the rotation direction of the steam turbine shaft, determining a second ejection area of ​​the steam turbine ejection toward the target building; the ejection source point is located on the steam turbine shaft and is used to characterize the initial position of the steam turbine ejection; the first ejection area is determined based on the second ejection area.

[0007] In one embodiment, determining the first ejection region based on the second ejection region includes: obtaining a preset ejection angle range for the turbine ejector; the preset ejection angle range is used to characterize the range of the angle between the ejection direction of the ejector and the radial direction of the turbine shaft at any rotation angle position of the turbine shaft; and correcting the second ejection region based on the preset ejection angle range to obtain the first ejection region.

[0008] In one embodiment, determining the first building item located within the first launch area of ​​the target factory based on the building item information of the target factory includes: using three-dimensional spatial Boolean operations to determine the spatial geometric relationship between each building item in the target factory and the first launch area based on the building item information; and for each building item in the target factory, in response to the spatial geometric relationship indicating that the building item intersects with the space of the first launch area, determining the building item as the first building item.

[0009] In one embodiment, before determining the second building item affected by the turbine projectile among the plurality of building items based on the first occlusion situation among the plurality of building items, the method further includes: for each building item, determining the target distance between the building item and the projectile source point in the target projectile direction based on the wall type to which the building item belongs; and determining the first occlusion situation among the plurality of building items based on the target distances corresponding to the plurality of building items respectively.

[0010] In one embodiment, the wall type includes a regular straight wall; determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: in response to the wall type to which the building item belongs being the regular straight wall, obtaining a first projection point of the launch source point on the building item; and determining the target distance based on the distance between the launch source point and the first projection point in the target launch direction.

[0011] In one embodiment, obtaining the first projection point of the missile source on the building includes: determining two target walls in the building whose normals match the target missile direction based on the angles between the normals of each wall in the building and the target missile direction; determining a second projection point of the missile source on each target wall; and determining the second projection point that is closest to the missile source in the target missile direction as the first projection point.

[0012] In one embodiment, the wall type includes a regular ring wall; determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: in response to the wall type to which the building item belongs being the regular ring wall, obtaining the distance between the geometric center point of the building item and the launch source point in the target launch direction; and determining the target distance based on the distance between the geometric center point of the building item and the launch source point in the target launch direction, and the outer diameter of the building item.

[0013] In one embodiment, the wall type includes a custom wall; the custom wall is an irregular wall other than a regular straight wall or a regular circular wall; determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: in response to the wall type to which the building item belongs being the custom wall, obtaining a plurality of target stretching points of the building item; the plurality of target stretching points are contour base points used to construct the stretching surface of the building item, and are arranged sequentially according to the contour generation order of the stretching surface; for each group of adjacent target stretching points in the plurality of target stretching points, constructing a target line segment based on the adjacent target stretching points; the adjacent target stretching points are the endpoints of the target line segment; determining the target distance based on the distance from the launch source point to each target line segment in the target launch direction.

[0014] In one embodiment, determining the target distance based on the distance from the launch source point to each target line segment in the target launch direction includes: for each target line segment, determining the distance between the launch source point and a third projection point in the target launch direction; the third projection point is the projection point of the launch source point on the target line segment; and determining the minimum value of the distances between each third projection point and the launch source point in the target launch direction as the target distance.

[0015] In one embodiment, the plurality of building items includes a first building item and a second building item; determining a first occlusion situation among the plurality of building items based on the target distances corresponding to the plurality of building items includes: in response to the first building item and the second building item having equal target distances, determining the first occlusion situation as no occlusion between the first building item and the second building item; in response to the first building item and the second building item having unequal target distances, determining the first occlusion situation based on the positional relationship between the projected contours of the first building item and the second building item in the target plane; the target plane is perpendicular to the target flight direction.

[0016] In one embodiment, the target distance corresponding to the first building item is less than the target distance corresponding to the second building item; determining the first occlusion condition based on the positional relationship between the projected contours of the first building item and the second building item in the target plane includes: determining the first occlusion condition as the second building item is not occluded by the first building item if the projected contours of the first building item and the second building item in the target plane do not overlap completely; determining the first occlusion condition as the second building item is partially occluded by the first building item if the projected contours of the first building item and the second building item in the target plane partially overlap; determining the first occlusion condition as the second building item is completely occluded by the first building item if the projected contour corresponding to the second building item is located within the projected contour corresponding to the first building item; and determining the first occlusion condition based on the external dimensions of the first building item and the second building item if the projected contours of the first building item and the second building item completely overlap.

[0017] In one embodiment, determining the first occlusion situation based on the external dimensions of the first building item and the second building item includes: in response to the inconsistency between the external dimensions of the first building item and the second building item, determining that the first occlusion situation is that the second building item is completely occluded by the first building item; in response to the inconsistency between the external dimensions of the first building item and the second building item, performing a size reduction process on the second building item; and determining the first occlusion situation based on a second occlusion situation between the first building item and the reduced second building item.

[0018] In one embodiment, determining the second building item affected by the turbine projectile among the plurality of building items based on the first occlusion situation among the plurality of building items includes: determining the building item among the plurality of building items that is not completely occluded based on the first occlusion situation; and determining the building item among the plurality of building items that is not completely occluded as the second building item.

[0019] In one embodiment, after determining the second building item affected by the turbine projectile among the plurality of building items based on the first occlusion situation among the plurality of building items, the method further includes at least one of the following: in the three-dimensional view of the target plant, displaying other building items among the first building items excluding the second building item in a first state, displaying the second building item in a second state, and displaying other building items excluding the first building item in a third state; the warning levels of the second state, the first state, and the third state are arranged from high to low; and generating and outputting a report indicating the impact range of the turbine projectile based on the building item information corresponding to the first building item and the second building item.

[0020] In one embodiment, the building item information includes the orientation of the building item; after determining the second building item among the plurality of building items affected by the turbine projectile based on the first obstruction situation among the plurality of building items, the method further includes at least one of the following: taking safety protection measures for the second building item; and adjusting the orientation of the turbine based on the orientation of the second building item.

[0021] This application embodiment also provides an identification device for the influence range of nuclear power turbine projectiles. The identification device includes a projectile area acquisition module, a first building item determination module, and a second building item determination module. The projectile area acquisition module is used to acquire a first projectile area of ​​the turbine projectile within the nuclear power plant area. The first projectile area is the projectile area of ​​the turbine projectile directed toward a target building in the nuclear power plant area. The first building item determination module is used to determine a first building item located within the first projectile area in the target building based on the building item information of the target building. The second building item determination module is used to determine a second building item affected by the turbine projectile among the multiple building items, based on a first occlusion situation between the multiple building items, in response to the first building item comprising multiple building items.

[0022] This application provides a method and apparatus for identifying the influence range of nuclear power turbine jets. By determining multiple building items in the target plant located within the jet area of ​​the turbine jets and based on the occlusion between these multiple building items, the method identifies the building items ultimately affected by the turbine jets, thereby improving the accuracy of identifying the influence range of turbine jets. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating the method for identifying the influence range of nuclear power turbine projectiles provided in this application embodiment.

[0024] Figure 2This is a schematic diagram of the flight area of ​​a nuclear power turbine ejector provided in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the wall distance for the method of identifying the influence range of nuclear power turbine projectiles provided in the embodiments of this application.

[0026] Figure 4 This is a schematic diagram of the occlusion judgment method for the identification of the influence range of nuclear power turbine projectiles provided in the embodiments of this application.

[0027] Figure 5 This is a schematic diagram of the identification results of the method for identifying the influence range of nuclear power turbine projectiles provided in the embodiments of this application.

[0028] Figure 6 This is a schematic flowchart illustrating the method for identifying the influence range of nuclear power turbine projectiles provided in this application embodiment.

[0029] Figure 7 This is a schematic diagram of parameter settings for the method for identifying the influence range of nuclear power turbine projectiles provided in the embodiments of this application.

[0030] Figure 8 This is a schematic diagram of the structure of the identification device for the influence range of nuclear power turbine projectiles provided in the embodiments of this application.

[0031] Figure 9 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The method for identifying the impact range of nuclear power turbine projectiles provided in this application embodiment can be applied to electronic devices or the software of electronic devices. The electronic device can be a terminal or a server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, etc.; the server can be configured as an independent physical server, or as a server cluster or distributed system composed of multiple physical servers, or as a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application that implements the method for identifying the impact range of nuclear power turbine projectiles, etc., but is not limited to the above forms.

[0035] The method for identifying the influence range of nuclear power turbine projectiles provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please see Figure 1 This application provides a method for identifying the influence range of projectiles from nuclear power turbines, which may include: Step S101: Obtain the first ejection area of ​​the turbine ejection within the nuclear power plant area; the first ejection area is the ejection area of ​​the turbine ejection toward the target building in the nuclear power plant area; Optionally, the first launch zone can be determined in real time based on the turbine's location within the nuclear power plant area; alternatively, it can be predetermined based on the turbine's location within the nuclear power plant area, and the predetermined launch zone can be directly called during actual use. The launch zone facing the target building within the nuclear power plant area can be understood as the launch zone that may cover the target building in geometric space.

[0037] Optionally, the target building may include at least one safety-critical building within the nuclear power plant site. If there are multiple target buildings, they are all located on the same side of the turbine.

[0038] Step S102: Based on the building information of the target factory, determine the first building item located in the first launch area of ​​the target factory; Optionally, the building information of the target factory building may include the identification, layout, and dimensions of each building item in the target factory building. In actual implementation, for each building item in the target factory building, based on the above information, projection mapping operations or three-dimensional Boolean operations can be used to determine the spatial geometric relationship between the building item and the first launch area; then, in response to the spatial geometric relationship indicating that the building item intersects with the space of the first launch area, the building item can be identified as the first building item.

[0039] Step S103: In response to the fact that the first building item includes multiple building items, based on the first occlusion situation among the multiple building items, determine the second building item among the multiple building items that is affected by the turbine ejection.

[0040] In practice, in response to the first building item comprising multiple building items, the occlusion situation between every two building items can be determined; then, based on the determined occlusion situations, the second building item affected by turbine ejecta can be determined from the multiple building items. Specific implementation details can be found in the relevant description below.

[0041] In practice, in response to the fact that the first building item includes a building item, the first building item can be identified as the building item affected by turbine ejecta.

[0042] This application embodiment determines the building items ultimately affected by the turbine projectiles by identifying multiple building items within the flight area of ​​the turbine projectiles in the target factory building and by determining the occlusion between the multiple building items. This can improve the accuracy of identifying the range of influence of the turbine projectiles.

[0043] Optionally, the steam turbine is located within the nuclear power plant site. In one embodiment, obtaining the first ejection area of ​​the steam turbine ejection within the nuclear power plant site in step S101 includes: Based on the turbine's orientation, with the launch source as the center and the maximum launch distance of the projectile within the nuclear power plant area as the radius, the second launch zone of the turbine projectile toward the target building is determined along the rotation direction of the turbine shaft; the launch source is located on the turbine shaft and is used to characterize the initial position of the turbine projectile. Based on the second launch area, the first launch area is determined.

[0044] In practice, the orientation of the turbine shaft within the nuclear power plant area can be determined based on the turbine's orientation within the plant area, combined with the orientation of the turbine shaft on the turbine. Then, based on the orientation of the turbine shaft within the plant area and the dimensions of the plant area, the maximum launch distance of the turbine projectile within the plant area can be determined. Finally, using the initial position of the turbine projectile on the turbine shaft as the center and the maximum launch distance as the radius, a circle can be drawn along the rotation direction of the turbine shaft to obtain the second launch area of ​​the turbine projectile towards the target building.

[0045] Considering that the turbine shaft has a certain length, the turbine ejector is evenly distributed along the length direction (also known as the axial direction) of the turbine shaft. The second ejector region obtained by the above method can be a partially cylindrical region with a certain thickness.

[0046] Furthermore, the second ejection region can be directly defined as the first ejection region; alternatively, the second ejection region can be modified based on the preset ejection angle range of the turbine ejector to obtain the aforementioned first ejection region. For specific implementation details, please refer to the relevant description below.

[0047] This application embodiment, based on the turbine's orientation, uses the launch source as the center and the maximum launch distance of the projectile within the nuclear power plant area as the radius, along the rotation direction of the turbine shaft, to determine a second launch area for the turbine projectile toward the target building; and based on the second launch area, determines a first launch area. This improves the accuracy of determining the launch area of ​​the turbine projectile toward the target building within the nuclear power plant area, enabling the accurate identification of the impact range of the turbine projectile using this launch area.

[0048] In one embodiment, determining the first launch region based on the second launch region includes: Obtain the preset launch angle range of the turbine ejector; the preset launch angle range is used to characterize the range of the angle between the launch direction of the ejector and the radial direction of the turbine shaft at any rotation angle position of the turbine shaft; Based on the preset launch angle range, the second launch area is corrected to obtain the first launch area.

[0049] In actual implementation, considering that the initial direction and angle distribution of turbine ejected material from the ejection source point are naturally different under different fracture / failure mechanisms (also known as ejection mechanisms), the first ejection region can be obtained by correcting the second ejection region through the preset ejection angle range of the turbine ejected material obtained by pre-calibration, which can improve the accuracy of determining the first ejection region.

[0050] Optionally, the preset launch angle range can be 0°~25°. When the second launch region is a partially cylindrical region with a certain thickness, the first launch region obtained after correction is a three-dimensional space body composed of partially cylindrical and partially conical parts.

[0051] like Figure 2 As shown, in a linear layout scenario, the target factory building is directly opposite the turbine shaft along its axial direction. The second launch area can be a cylindrical region generated when θ=0, such as... Figure 2 The right-hand portion of the DIS-marked direction, the first blast region may include the second blast region, and the additional vertebral region generated when θ≠0 (e.g., Figure 2 The left side of the DIS logo (the direction of the logo).

[0052] This application embodiment obtains a preset flight angle range for turbine projectiles; and based on the preset flight angle range, corrects the second flight area to obtain a first flight area, which can further improve the accuracy of determining the flight area of ​​turbine projectiles toward the target building in the nuclear power plant area, so that the influence range of turbine projectiles can be accurately identified by using the flight area.

[0053] In one embodiment, step S102 above: determining the first building item located within the first launch area of ​​the target factory based on the building item information of the target factory, includes: Using three-dimensional spatial Boolean operations, based on building item information, the spatial geometric relationship between each building item in the target factory and the first launch area is determined; For each building item in the target factory building, in response to the spatial geometric relationship indicating that the building item intersects with the space of the first flying area, the building item is identified as the first building item.

[0054] In actual implementation, three-dimensional spatial Boolean operations can be used to determine the intersection between each building item in the target factory and the first flying area based on the building item information of the target factory, so as to obtain the spatial geometric relationship between each building item and the first flying area. Next, based on the spatial geometric relationship between each building item and the first launch area, the building items that intersect with the first launch area can be selected from the building items of the target factory, and the selected building items can be determined as the first building item.

[0055] This application embodiment utilizes three-dimensional spatial Boolean operations to determine the spatial geometric relationship between each building item in the target plant and the first flying projectile area based on building item information; and for each building item in the target plant, in response to the spatial geometric relationship indicating that the building item intersects with the space of the first flying projectile area, the building item is identified as the first building item, which can improve the accuracy of determining the first building item located within the first flying projectile area, so that the influence range of the turbine flying projectile can be accurately identified based on the identified first building item.

[0056] In one embodiment, before determining the second building item affected by turbine ejecta among the multiple building items based on the first occlusion situation among the multiple building items in step S103 above, the identification method provided in this application embodiment further includes: For each building item, the target distance between the building item and the launch source point in the target launch direction is determined based on the wall type to which the building item belongs; Based on the target distances corresponding to multiple building items, the first occlusion situation among the multiple building items is determined.

[0057] Optionally, the wall type may include at least one of regular straight wall, regular circular wall, and custom wall; a custom wall may be an irregular wall other than a regular straight wall or a regular circular wall.

[0058] When a building is a three-dimensional digital building model constructed based on Building Information Modeling (BIM) technology, a regular straight wall can refer to a regular wall whose centerline is a straight line segment and whose cross-section remains consistent along its length; a regular ring wall can refer to an arc-shaped or ring-shaped regular wall whose centerline is an arc or a circular curve and whose cross-section remains consistent along its extension direction; a custom wall can refer to an irregular wall whose centerline is an arbitrary curve that is not a straight line or a non-standard arc, or whose cross-section varies along its extension direction.

[0059] In practice, for each building item, the target distance between it and the launch source point in the target launch direction can be calculated based on its corresponding wall type. See the relevant description below for details. Next, the occlusion situation between any pair of building items can be determined based on the relationship between their corresponding target distances. See the relevant description below for details. Finally, based on the occlusion situation between all pairs of building items, building items not completely occluded by other building items, and building items partially or completely occluded by other building items, can be selected to obtain the first occlusion situation mentioned above.

[0060] This application embodiment determines the target distance between a building item and the projectile source point in the target projectile direction for each building item based on the wall type to which the building item belongs; and determines the first occlusion situation between multiple building items based on the target distances corresponding to multiple building items respectively. This can improve the accuracy of determining the occlusion situation between building items, so that the influence range of turbine projectiles can be accurately identified by using the occlusion situation.

[0061] In one embodiment, determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type of the building item is a regular straight wall, obtain the first projection point of the flying source point on the building item; The target distance is determined based on the distance between the launch source point and the first projection point in the target launch direction.

[0062] In actual implementation, when the wall type of the building item is a regular straight wall, the vertical projection points of the launch source point on two target walls within the building item can be obtained. The target walls can be walls within the building item whose angle between the normal and the target launch direction is less than a preset angle. The first projection point can include the vertical projection points of the launch source point on the two target walls within the building item. Then, the distances between the launch source point and the two vertical projection points can be calculated separately, and the average of the two distances can be taken as the target distance, or the minimum distance between the two can be determined as the target distance. Optionally, the preset angle can be 5 degrees.

[0063] The first projection point can also be the projection point that is closest to the launch source point among the vertical projection points of the two target walls. In this case, the distance between the launch source point and the first projection point in the target launch direction can be directly determined as the target distance.

[0064] like Figure 3 As shown, when the wall type of the building item is a regular straight wall, the above target distance can be determined based on the following steps: a) Construct the six faces of the building item using spatial geometry algorithms, and obtain the normal direction F of each wall face. Select the two faces P1 and P2 in the building item whose normal direction F is parallel to the target's flight direction: b) Project the flying source point onto planes P1 and P2 respectively to obtain projection points T1 and T2, and then set the projection points T1 and T2 to the same height as the flying source point; c) Calculate the distances D1 and D2 between the projected points T1 and T2 at the same height and the flying source point, respectively, and take the minimum value of D1 and D2 as the target distance mentioned above.

[0065] This application embodiment obtains the first projection point of the projected source on the building in response to the wall type of the building being a regular straight wall; and determines the target distance based on the distance between the projected source and the first projection point in the target projected direction. This can improve the accuracy of determining the target distance between the regular straight wall and the projected source in the target projected direction, and make the influence range of the turbine projectiles accurately identified based on the target distance.

[0066] In one embodiment, obtaining the first projection point of the projected source point on the building includes: Based on the angle between the normal of each wall in the building item and the target's flight direction, determine the two target walls in the building item whose normals match the target's flight direction; For each target wall, determine the second projection point of the projected source on the target wall; The second projection point, which is closest to the launch source point in the target launch direction, is designated as the first projection point.

[0067] In practice, the included angles of each wall in the building can be compared with preset angles, and the two walls with included angles smaller than the preset angles can be selected as target walls. Then, for each target wall, the vertical projection point of the launch source on the target wall can be obtained, resulting in a second projection point. Next, for each second projection point, the distance between the second projection point and the launch source in the target launch direction can be calculated. Finally, the second projection point closest to the launch source in the target launch direction can be determined as the first projection point.

[0068] This application embodiment determines two target walls in a building whose normals match the target flight direction based on the angle between the normals of each wall in the building and the target flight direction; and for each target wall, determines a second projection point of the flight source point on the target wall; and determines the second projection point, which is closest to the flight source point in the target flight direction, as the first projection point. This improves the accuracy of determining the first projection point, enabling accurate identification of the influence range of turbine projectiles based on the first projection point.

[0069] In one embodiment, determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type of the building item is a regular ring wall, obtain the distance between the geometric center point of the building item and the launch source point in the target launch direction; The target distance is determined based on the distance between the geometric center point of the building and the launch source point in the target launch direction, and the outer diameter of the building.

[0070] In practice, the distance L between the building and the launch source can be calculated based on the coordinates of the geometric center point of the building and the launch source. Then, by comparing the radius values ​​of the inner and outer walls of the building and taking the larger radius R of the outer wall, the target distance D=LR between the building and the launch source in the target launch direction can be obtained.

[0071] This application embodiment obtains the distance between the geometric center point of the building item and the launch source point in the target launch direction in response to the wall type of the building item being a regular ring wall; and determines the target distance based on the distance between the geometric center point of the building item and the launch source point in the target launch direction and the outer diameter of the building item. This can improve the accuracy of determining the target distance between the regular ring wall and the launch source point in the target launch direction, and make it possible to accurately identify the influence range of turbine launchers based on the target distance.

[0072] Optionally, the wall type includes custom walls; custom walls can be irregular walls other than regular straight walls and regular circular walls.

[0073] In one embodiment, determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type of the building item is a custom wall, multiple target extrusion points of the building item are obtained; the multiple target extrusion points are the contour base points used to construct the extrusion surface of the building item, and are arranged in order according to the contour generation order of the extrusion surface. For each group of adjacent target stretching points among multiple target stretching points, construct a target line segment based on the adjacent target stretching points; the adjacent target stretching points are the endpoints of the target line segment; The target distance is determined based on the distance from the launch source point to each target line segment along the launch direction.

[0074] In actual implementation, multiple target stretching points can be obtained to construct the stretching surface. Then, line segments can be constructed from adjacent stretching points in pairs to obtain multiple target line segments. Alternatively, the target stretching points can be set to the same height as the launch source point, and then line segments can be constructed from adjacent target stretching points at the same height in pairs to obtain multiple target line segments.

[0075] In the first case, the distance from the launch source to each target line segment can be obtained. Then, the component of the minimum value of each distance in the target launch direction can be determined as the target distance between the building item and the launch source in the target launch direction. Alternatively, the component of the average value of each distance in the target launch direction can be determined as the target distance between the building item and the launch source in the target launch direction.

[0076] In the second case, the launch source point can be projected onto each line segment to obtain multiple projection points, and the distance between each projection point and the launch source point can be calculated. Then, the minimum value among the distances can be determined as the target distance between the building and the launch source point in the target launch direction, or the average value of the distances can be determined as the target distance between the building and the launch source point in the target launch direction.

[0077] This application embodiment obtains multiple target stretching points of a building item in response to the building item's wall type being a custom wall; and constructs target line segments based on adjacent target stretching points for each group of adjacent target stretching points; the adjacent target stretching points are the endpoints of the target line segments; and determines the target distance based on the distance from the launch source point to each target line segment in the target launch direction. This improves the accuracy of determining the target distance between the custom wall and the launch source point in the target launch direction, enabling accurate identification of the influence range of turbine projectiles based on the target distance.

[0078] In one embodiment, determining the target distance based on the distance from the launch source point to each target line segment along the target launch direction includes: For each target line segment, determine the distance between the launch source point and the third projection point in the target launch direction; the third projection point is the projection point of the launch source point on the target line segment. The minimum distance between each third projection point and the launch source point in the target launch direction is determined as the target distance.

[0079] In practice, the projection point of the launch source on the target line segment can be obtained, and the distance between the launch source and the projection point in the target launch direction can be calculated. Then, the minimum distance between the projection point corresponding to each target line segment and the launch source in the target launch direction can be determined as the target distance between the building and the launch source in the target launch direction. The method for calculating the distance between the launch source and the projection point in the target launch direction can refer to the distance calculation methods in the two cases mentioned above, and will not be repeated here.

[0080] This application embodiment determines the distance between the launch source point and the third projection point in the target launch direction for each target line segment; and determines the minimum value of the distance between each third projection point and the launch source point in the target launch direction as the target distance. This can improve the accuracy of determining the target distance between the custom wall and the launch source point in the target launch direction, and make the influence range of the turbine launcher accurately identified based on the target distance.

[0081] Optionally, the plurality of building items includes a first building item and a second building item. In one embodiment, determining the first occlusion situation among the plurality of building items based on the target distances corresponding to the respective building items includes: In response to the fact that the target distances corresponding to the first building item and the second building item are equal, the first occlusion condition is determined to be that there is no occlusion between the first building item and the second building item; In response to the unequal target distances corresponding to the first and second building items, a first occlusion situation is determined based on the positional relationship between the projected contours of the first and second building items in the target plane; the target plane is perpendicular to the target flight direction.

[0082] In practice, for any pair of building items among multiple building items, we can first compare the target distances of each of them to the launch source point in the target launch direction. If the target distances of the two items are equal, they can be considered to be arranged side by side within the nuclear power plant area, that is, there is no obstruction between them. If the target distances of the two items are not equal, they can be considered to be arranged not side by side within the nuclear power plant area. In this case, the positional relationship between the two items can be determined based on the obstruction between them and the positional relationship between their projected contours in the target plane. For specific implementation details, please refer to the relevant description below.

[0083] This application embodiment determines the first occlusion condition as no occlusion between the first and second building items when the target distances corresponding to the first and second building items are equal; and determines the first occlusion condition based on the positional relationship between the projected contours of the first and second building items in the target plane when the target distances corresponding to the first and second building items are unequal. This can improve the accuracy of determining the occlusion condition between building items, and enable the influence range of turbine projected objects to be accurately identified based on the occlusion condition.

[0084] Optionally, the target distance corresponding to the first building item is less than the target distance corresponding to the second building item. In one embodiment, determining the first occlusion condition based on the positional relationship between the projected contours of the first and second building items in the target plane includes: In response to the fact that the projected contours of the first building item and the second building item do not overlap at all in the target plane, the first occlusion condition is determined to be that the second building item is not occluded by the first building item. In response to the partial overlap of the projected outlines of the first building item and the second building item in the target plane, the first occlusion condition is determined to be that the second building item is partially occluded by the first building item. In response to the fact that the projected outline of the second building item is located within the projected outline of the first building item, the first occlusion condition is determined to be that the second building item is completely occluded by the first building item. In response to the complete overlap of the projected contours of the first building item and the second building item in the target plane, a first occlusion condition is determined based on the external dimensions of the first building item and the second building item.

[0085] In practice, considering that the projected outlines of the first and second building items completely overlap in the target plane, this only indicates that they are completely coincident in two dimensions from the direction of target flight, and cannot accurately distinguish their three-dimensional occlusion relationship. To improve the accuracy of determining the occlusion relationship in this case, the external dimensions of the two buildings can be introduced to further determine the occlusion situation.

[0086] This application embodiment distinguishes between two buildings' projected outlines in four levels of fine detail: completely non-overlapping, partially overlapping, completely containing, and completely overlapping. This enables accurate determination of occlusion. For completely overlapping scenarios where conventional judgment is prone to ambiguity, a secondary judgment is made by combining the differences in external dimensions. This further improves the accuracy of occlusion determination, allowing the occlusion determination to accurately identify the influence range of turbine projectiles.

[0087] In one embodiment, determining the first occlusion situation based on the external dimensions of the first building item and the second building item includes: In response to the inconsistency in the external dimensions of the first building item and the second building item, the first occlusion situation is determined to be that the second building item is completely occluded by the first building item; In response to the fact that the first building item and the second building item have the same external dimensions, the external dimensions of the second building item are reduced; based on the second occlusion situation between the first building item and the reduced second building item, the first occlusion situation is determined.

[0088] In practice, when the dimensions of the first building item and the second building item are inconsistent, it can be determined that the first occlusion situation is that the second building item is completely occluded by the first building item. When the dimensions of the first building item and the second building item are inconsistent, the occlusion relationship may be ambiguous due to geometric symmetry. In this case, the symmetry can be broken by shrinking the shape, thereby determining the true occlusion relationship.

[0089] Please see Figure 4 The aforementioned first occlusion situation can be determined based on the following steps: Construct a target plane perpendicular to the target's flight direction at the endpoint coordinates of the projectile's maximum launch distance; Project the walls A and B / C, from near to far along the target's trajectory, onto the target plane to obtain the corresponding projected contours A' and B' / C'. Using a three-dimensional projection space geometry range object search algorithm, determine whether there is overlap between two projected contours A' and B' / C' in the target plane: Scenario A: Spatial geometric algorithms determine that the projected outlines of the two walls have no intersection, such as... Figure 4 The projected contours A' and C' do not overlap and are considered to be unoccluded. Scenario B: The projected outlines of the two walls intersect, such as... Figure 4 For A' and B', further determination is needed to determine whether they overlap: (1) If the projected contour B' is completely within the range of the projected contour A', the result obtained by the geometric algorithm is that there is an inclusive relationship, which means that wall B is completely occluded by wall A; (2) If the external dimensions of walls A and B are exactly the same, and their projected outlines A' and B' also completely overlap, but the spatial geometry algorithm determines that there is no containment relationship, further judgment is required: Subtract 1 mm from the height of the top coordinate of the projection point of wall B in the vertical plane, and add 1 mm to the highest point of the bottom coordinate. Reconstruct 4 new coordinate points of the projection outline of wall B. Determine whether all 4 projection points of wall B are within the projection outline A' of wall A. If so, wall B is considered to be occluded by wall A; otherwise, it is considered not occluded.

[0090] In one embodiment, the step S103 above, which determines the second building item affected by turbine ejecta among the multiple building items based on the first occlusion situation among the multiple building items, includes: Based on the first occlusion situation, identify the building items that are not completely occluded among multiple building items; The building item that is not completely obscured among multiple building items is identified as the second building item.

[0091] In actual implementation, for multiple building items (all walls and floors) located in the first firing range of the target factory, the occlusion status of all walls and floors can be identified sequentially from near to far according to the distance between the building item and the firing source point to obtain the first occlusion status; then, based on the first occlusion status, the unoccluded walls and floors in the first firing range can be selected to obtain the second building item.

[0092] Optionally, the second building item includes the building item closest to the launch source and the building item located behind it that is not completely obscured.

[0093] This application embodiment improves the accuracy of identifying building items affected by turbine projectiles in a target factory building by determining, based on a first occlusion condition, building items that are not completely occluded among multiple building items; and identifying building items that are not completely occluded among multiple building items as second building items. That is, it can improve the identification accuracy of the range of influence of turbine projectiles.

[0094] In one embodiment, after determining the second building item affected by turbine ejecta among the multiple building items based on the first occlusion situation among the multiple building items in step S103 above, the identification method provided in this application embodiment further includes at least one of the following: In the 3D view of the target factory building, the first state displays all building items except the second building item in the first building item, the second state displays the second building item, and the third state displays all building items except the first building item; the warning levels of the second state, the first state, and the third state are arranged from high to low. Based on the building item information corresponding to the first and second building items, a report is generated and output to indicate the impact range of turbine projectiles.

[0095] In practice, in the 3D view of the target plant, the second building items identified as being affected by turbine projectiles can be displayed in a report using a first color; the first building items not affected by turbine projectiles can be displayed in a report using a second color; and the building items in the target plant located outside the first projectile area can be displayed in a third color. The warning levels of the first, second, and third colors are arranged from highest to lowest.

[0096] Optionally, the report may include information such as the identification and name of each building in the target plant within the first launch area, its distance from the launch source in the target launch direction, and whether it is affected by turbine projectiles (or whether there is a risk).

[0097] like Figure 5 As shown, in a T-shaped layout scenario, the direction of the turbine projectiles is directly facing the target building. The identification results can be presented to the user in the form of real-time models and reports. Furthermore, the second building in the target building affected by the turbine projectiles can be highlighted in red in the real-time models and reports. This can provide technical support for the identification and demonstration of turbine projectile impact risk, especially the impact risk of turbine projectiles in misaligned or T-shaped layouts.

[0098] This embodiment of the application, by displaying differentiated first, second, and third states for all building items in the first building item (excluding the second building item), the second building item, and all building items excluding the first building item in a 3D view of the target plant, and sorting them from high to low alert level, can intuitively highlight buildings related to turbine projectile risks, facilitating rapid identification of high-risk objects. Simultaneously, by combining relevant building item information, a projectile impact range report is automatically generated and output, achieving a combination of 3D visualization and quantitative analysis. This improves the efficiency and intuitiveness of identifying the turbine projectile impact range.

[0099] Optionally, the building item information includes the orientation of the building item. In one embodiment, after determining the second building item affected by turbine ejecta among the multiple building items based on the first occlusion situation between the multiple building items in step S103 above, the identification method provided in this application embodiment further includes at least one of the following: Safety protection measures should be taken for the second building. Based on the orientation of the second building, adjust the orientation of the steam turbine.

[0100] In practice, safety optimizations can be specifically implemented based on the identified secondary building structures affected by turbine projectiles. On one hand, corresponding protective structures can be added to the affected buildings to enhance their resistance to projectile impacts and reduce safety risks. On the other hand, the turbine's layout can be adaptively adjusted based on the actual location of these buildings to optimize the spatial layout from the source, reduce the range and impact of projectiles, and thus improve the overall safety and reliability of the nuclear power plant's building layout.

[0101] Please see Figure 6 The method for identifying the influence range of nuclear power turbine projectiles provided in this application embodiment may include, but is not limited to, the following steps: 1. Loading of external wall and floor models: The BIM model items of the target factory building can be imported and loaded in the form of an external list, or the BIM model items of the target factory building can be obtained by matching the factory building model name and filtering rules to generate the BIM model of the target factory building. II. Automated creation of turbine shafts: The system allows users to input turbine location coordinates and key parameters to automatically generate a BIM model of the turbine shaft at a preset location.

[0102] III. Projectile Parameter Settings: Please combine Figure 7 It can respond to user input to set key parameters of the turbine ejection, which can be determined based on turbine rotor dynamics and failure analysis, and may include... Figure 7 The length of the turbine shaft shown in (a) and the coordinates of the turbine shaft in the East-North-Up (ENU) local rectangular coordinate system may also include Figure 7 The following parameters are shown in (b): 1. Axial Direction (DIR): Defines the main flight direction of the projectile (the default is perpendicular to the rotor axis, or a specific direction considering the preset flight angle range).

[0103] 2. Distance to be launched (DIS): The maximum distance at which the projectile can be launched, which is determined by the actual restricted area of ​​the factory.

[0104] 3. Projection Angle (θ): Defines the angle between the direction in which the projectile may fly and the vertical direction. Target buildings located within the default value range of 25° are considered to be at risk.

[0105] IV. Automated creation and generation of the launch zone: Based on the parameters set in step two, a dynamic 3D model of the danger zone, i.e., the 3D model of the first launch zone, is automatically constructed in 3D space. This model is preferably a combination of a partial cylinder and a cone. Its generation logic can be: 1. Taking the potential jet source point of the steam turbine rotor as the vertex and the jet direction as the axis of rotation; 2. Determine the launch angle based on the preset launch angle range, with the angle between the vertical direction and the elevation angle within 25 degrees; 3. Generate a cylindrical and conical three-dimensional space body with the maximum launch distance as the radius.

[0106] V. Analysis Results List: Perform a three-dimensional spatial Boolean operation (intersection judgment) on the 3D model of the hazardous area generated in step three and the list of items imported in step one to obtain the first building item located in the first flying area; then, automatically traverse the occlusion of each building item in all the first building items in order of distance from near to far, and identify the second building item in the first building items that is not completely occluded.

[0107] VI. Results Output: 1. Organize and iterate through the recognition results of step four, and further clean the data by combining algorithms and rules to form a result list and save it locally; 2. Visual Highlighting: In the 3D view of the target factory, the identified affected items are highlighted, colored, or listed.

[0108] 3. Generate and output a list of affected items: Automatically generate reports containing information such as ID, item name, distance from the launch point, and whether there is any risk.

[0109] The specific implementation process of this embodiment can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0110] The method for identifying the influence range of nuclear power turbine projectiles provided in this application has the following beneficial effects: 1. Precision: The three-dimensional modeling method is used to restore the actual trajectory and spatial range of the projectile. Compared with the traditional two-dimensional analysis, it is closer to the physical laws, which can significantly reduce the analysis range and improve the accuracy of identifying dangerous areas and affected buildings.

[0111] 2. Automation: Based on the BIM model, the entire process of parameter configuration, hazardous area modeling, spatial occlusion analysis and result output is automated. There is no need for manual identification of each building, reducing human error and significantly improving the identification efficiency of the impact range of turbine jets under the differentiated layout of nuclear power plant areas.

[0112] 3. Visualization: The system highlights and distinguishes affected building items through a 3D view, and automatically generates and exports analysis reports of affected items. The results are clear and easy to understand, and can provide complete and traceable data support for risk assessments such as layout optimization, safety protection, misalignment, and T-shaped layouts.

[0113] 4. Intelligent: Relying on the built-in three-dimensional spatial Boolean algorithm, it automatically completes the building item search, occlusion relationship judgment and intersection detection. In complex layout scenarios, it can reliably eliminate occlusion interference and improve the completeness and reliability of turbine projectile impact range identification.

[0114] Please see Figure 8 This application also provides an identification device 800 for the influence range of nuclear power turbine projectiles. The device 800 may include a projectile area acquisition module 801, a first building item determination module 802, and a second building item determination module 803.

[0115] The ejection area acquisition module 801 can be used to acquire the first ejection area of ​​the steam turbine ejection within the nuclear power plant area; the first ejection area is the ejection area of ​​the steam turbine ejection toward the target building in the nuclear power plant area; The first building item determination module 802 can be used to determine the first building item located in the first launch area of ​​the target factory based on the building item information of the target factory. The second building item determination module 803 can be used to determine, in response to the first building item comprising multiple building items, a second building item affected by turbine ejecta among the multiple building items based on a first occlusion situation among the multiple building items.

[0116] The nuclear power turbine projectile impact range identification device provided in this application embodiment can realize all the steps of the above-described nuclear power turbine projectile impact range identification method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0117] Optionally, embodiments of this application also provide an electronic device, including a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, they implement the various steps of the above-described method for identifying the influence range of nuclear power turbine projectiles, and achieve the same technical effect. To avoid repetition, they will not be described again here. It should be noted that the electronic device in the embodiments of this application includes the aforementioned mobile electronic device and non-mobile electronic device.

[0118] Figure 9 To illustrate the hardware structure of the electronic device according to the embodiments of this application, the electronic device includes: The processor 901 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 902 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 902 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 902 and is called and executed by the processor 901 to execute the method for identifying the influence range of nuclear power turbine projectiles according to the embodiments of this application. The input / output interface 903 is used to implement information input and output; The communication interface 904 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 905 transmits information between various components of the device (e.g., processor 901, memory 902, input / output interface 903, and communication interface 904); The processor 901, memory 902, input / output interface 903, and communication interface 904 are connected to each other within the device via bus 905.

[0119] The electronic device provided in this application embodiment can realize each step of the above-described method embodiment for identifying the influence range of nuclear power turbine projectiles and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0120] This application also provides a computer-readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various steps of the above-described method for identifying the influence range of nuclear power turbine projectiles and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0121] The processor is the processor in the electronic device described in the above embodiments. The computer-readable storage medium includes computer-readable storage media such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0122] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various steps of the above-described method for identifying the influence range of nuclear power turbine projectiles, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0123] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0124] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various steps of the above-described method for identifying the influence range of nuclear power turbine projectiles, and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0125] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0126] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0127] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for identifying the influence range of projectiles from a nuclear power turbine, characterized in that, include: To determine the first ejection zone of turbine ejecta within the nuclear power plant area; The first launch area is the area in which the turbine projectile is launched toward the target building in the nuclear power plant area; Based on the building information of the target factory, the first building in the target factory located within the first launch area is determined; In response to the first building item comprising multiple building items, a second building item among the multiple building items affected by the turbine ejecta is determined based on a first occlusion situation among the multiple building items.

2. The method as described in claim 1, characterized in that, The steam turbine is located within the nuclear power plant area; the acquisition of the first ejection area of ​​the steam turbine ejection within the nuclear power plant area includes: Based on the turbine's orientation, with the launch source as the center and the maximum launch distance of the projectile within the nuclear power plant area as the radius, a second launch area is determined along the turbine shaft's rotation direction, pointing the projectile toward the target building. The launch source is located on the turbine shaft and is used to characterize the initial position of the projectile. The first launch area is determined based on the second launch area.

3. The method as described in claim 2, characterized in that, Determining the first launch area based on the second launch area includes: Obtain a preset launch angle range for the turbine ejector; the preset launch angle range is used to characterize the range of the angle between the launch direction of the ejector and the radial direction of the turbine shaft at any rotation angle position of the turbine shaft; Based on the preset launch angle range, the second launch area is modified to obtain the first launch area.

4. The method as described in claim 1, characterized in that, The step of determining the first building item within the first launch area of ​​the target factory based on the building item information of the target factory includes: Using three-dimensional spatial Boolean operations, based on the building item information, the spatial geometric relationship between each building item in the target factory and the first flying area is determined; For each building item in the target factory building, in response to the spatial geometry indicating that the building item intersects with the space of the first flying area, the building item is identified as the first building item.

5. The method as described in claim 1, characterized in that, Before determining the second building item affected by the turbine ejecta among the plurality of building items based on the first obstruction situation among the plurality of building items, the method further includes: For each building item, the target distance between the building item and the launch source point in the target launch direction is determined based on the wall type to which the building item belongs; Based on the target distances corresponding to the multiple building items, a first occlusion situation among the multiple building items is determined.

6. The method as described in claim 5, characterized in that, The wall types include regular straight walls; Determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type of the building item is the regular straight wall, the first projection point of the flying source point on the building item is obtained; The target distance is determined based on the distance between the launch source point and the first projection point in the target launch direction.

7. The method as described in claim 6, characterized in that, The step of obtaining the first projection point of the projected source point on the building includes: Based on the angle between the normal of each wall in the building and the target's flight direction, two target walls in the building whose normals match the target's flight direction are determined. For each target wall, determine the second projection point of the projected source on the target wall; The second projection point, which is closest to the launch source point in the target launch direction, is determined as the first projection point.

8. The method as described in claim 5, characterized in that, The wall types include regular ring walls; Determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type to which the building item belongs is the regular ring wall, the distance between the geometric center point of the building item and the launch source point in the target launch direction is obtained; The target distance is determined based on the distance between the geometric center point of the building and the launch source point in the target launch direction, and the outer diameter of the building.

9. The method as described in claim 5, characterized in that, The wall type includes custom walls; the custom walls are irregular walls other than regular straight walls and regular circular walls; Determining the target distance between the building item and the launch source point in the target launch direction based on the wall type to which the building item belongs includes: In response to the fact that the wall type to which the building item belongs is the custom wall, multiple target stretching points of the building item are obtained; the multiple target stretching points are the contour base points used to construct the stretching surface of the building item, and are arranged in sequence according to the contour generation order of the stretching surface; For each group of adjacent target stretching points among the plurality of target stretching points, a target line segment is constructed based on the adjacent target stretching points; the adjacent target stretching points are the endpoints of the target line segment; The target distance is determined based on the distance from the launch source point to each target line segment in the target launch direction.

10. The method as described in claim 9, characterized in that, Determining the target distance based on the distance from the launch source point to each target line segment along the target launch direction includes: For each target line segment, the distance between the launch source point and the third projection point is determined in the target launch direction; the third projection point is the projection point of the launch source point on the target line segment. The minimum distance between each of the third projection points and the launch source point in the target launch direction is determined as the target distance.

11. The method as described in claim 5, characterized in that, The plurality of building items includes a first building item and a second building item; The step of determining the first occlusion situation among the multiple building items based on the target distances corresponding to each of the multiple building items includes: In response to the fact that the target distances corresponding to the first building item and the second building item are equal, it is determined that the first occlusion situation is that there is no occlusion between the first building item and the second building item; In response to the unequal target distances corresponding to the first building item and the second building item, the first occlusion situation is determined based on the positional relationship between the projected contours of the first building item and the second building item in the target plane; the target plane is perpendicular to the target flight direction.

12. The method as described in claim 11, characterized in that, The target distance corresponding to the first building item is less than the target distance corresponding to the second building item; Determining the first occlusion condition based on the positional relationship between the projected contours of the first building item and the second building item in the target plane includes: In response to the fact that the projected outlines of the first building item and the second building item do not overlap at all in the target plane, the first occlusion condition is determined to be that the second building item is not occluded by the first building item. In response to the partial overlap of the projected outlines of the first building item and the second building item in the target plane, the first occlusion condition is determined to be that the second building item is partially occluded by the first building item. In response to the fact that the projected outline of the second building item is located within the projected outline of the first building item, the first occlusion situation is determined to be that the second building item is completely occluded by the first building item. In response to the fact that the projected outlines of the first building item and the second building item completely overlap in the target plane, the first occlusion situation is determined based on the external dimensions of the first building item and the second building item.

13. The method as described in claim 12, characterized in that, Determining the first occlusion situation based on the external dimensions of the first building item and the second building item includes: In response to the inconsistency in the external dimensions of the first building item and the second building item, it is determined that the first occlusion situation is that the second building item is completely occluded by the first building item; In response to the fact that the first building item and the second building item have the same external dimensions, the external dimensions of the second building item are reduced; based on the second occlusion situation between the first building item and the reduced second building item, the first occlusion situation is determined.

14. The method as described in claim 1, characterized in that, The step of determining the second building item affected by the turbine ejecta among the multiple building items based on the first obstruction situation among the multiple building items includes: Based on the first occlusion situation, identify the building items that are not completely occluded among the plurality of building items; The building item that is not completely obscured among the plurality of building items is identified as the second building item.

15. The method as described in claim 1, characterized in that, After determining the second building item affected by the turbine projectiles among the plurality of building items based on the first obstruction situation among the plurality of building items, the method further includes at least one of the following: In the three-dimensional view of the target factory building, the other building items in the first building item are displayed in a first state, the second building item is displayed in a second state, and the other building items are displayed in a third state. The warning levels of the second state, the first state, and the third state are arranged from high to low; Based on the building item information corresponding to the first building item and the second building item, a report is generated and output to indicate the influence range of the turbine projectile.

16. The method as described in claim 1, characterized in that, The building item information includes the building item's location; After determining the second building item affected by the turbine projectiles among the plurality of building items based on the first obstruction situation among the plurality of building items, the method further includes at least one of the following: Safety protection measures shall be taken for the second building item; Based on the orientation of the second building item, the orientation of the steam turbine is adjusted.

17. A device for identifying the influence range of projectiles from a nuclear power turbine, characterized in that, The identification device includes a flying area acquisition module, a first building item determination module, and a second building item determination module; The ejection area acquisition module is used to acquire the first ejection area of ​​the turbine ejector within the nuclear power plant area. The first launch area is the area in which the turbine projectile is launched toward the target building in the nuclear power plant area; The first building item determination module is used to determine the first building item located in the first flying area of ​​the target factory based on the building item information of the target factory; The second building item determination module is used to determine, in response to the first building item comprising multiple building items, a second building item among the multiple building items that is affected by the turbine ejecta, based on a first occlusion situation among the multiple building items.

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