Method and apparatus for determining the position of a stent arranged on a pipe, computer storage medium

Abstract

Embodiments of the present application relate to the field of components of nuclear power plants, and particularly to a method and device for determining the position of a support arranged on a pipeline, and a computer storage medium. The method comprises the following steps: S10: determining a pipeline on which a support is to be arranged; S20: determining, according to the pipeline, an initial position of a point on the pipeline at which the support can be arranged; S30: determining, according to the initial position of the point of the support, a stress ratio of the pipeline when the point of the support is at the initial position; S40: judging whether the stress ratio determined in the step S30 meets a standard specification requirement, and if not, adjusting the position of the point of the support and the functional type of the support until the stress ratio of the pipeline meets the standard specification requirement, at which time the position of the point of the support is the position of the support arranged on the pipeline. The method can avoid determining the arrangement position of the support by means of artificial experience, and is beneficial to improving the accuracy of the determined arrangement position of the support.

Description

Technical Field

[0001] Embodiments of this application relate to the field of components of nuclear power plants, and more specifically to a method and apparatus for determining the position of supports arranged on pipelines, and a computer storage medium. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] Nuclear power plants house piping for the reactors. To ensure efficient use of space, different sections of the piping are typically located in different spatial positions. To secure the piping in these positions, multiple supports are usually installed to bear the weight of the piping, maintain its position, and prevent erroneous displacement.

[0004] Since the placement of supports on pipelines affects the pipeline's stress ratio and thus its normal operation, it is necessary to study the placement of supports on pipelines to ensure their proper functioning.

[0005] Currently, the techniques for determining the location of supports on pipelines still have many limitations. Summary of the Invention

[0006] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0007] To address the aforementioned issues, embodiments of this application provide a method and apparatus for determining the position of a support arranged on a pipeline, as well as a computer storage medium.

[0008] In a first aspect, embodiments of this application provide a method for determining the location of a support to be placed on a pipeline, wherein the stress ratio of the pipeline at the determined location meets the requirements of standard specifications. The method includes the following steps: S10: determining the pipeline on which the support will be placed; S20: determining the initial position of the point on the pipeline where the support can be placed, based on the pipeline; S30: determining the stress ratio of the pipeline at the initial position of the support point, based on the initial position of the support point; S40: determining whether the stress ratio determined in step S30 meets the requirements of standard specifications. If it does not meet the requirements of standard specifications, adjusting the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the requirements of standard specifications. The position of the support point at this point is the location of the support placed on the pipeline.

[0009] The method for determining the position of a support on a pipeline provided in the embodiments of this application determines the stress ratio of the pipeline when the support point is in its initial position. If it is determined that the stress ratio of the pipeline when the support point is in its initial position does not meet the standard specification requirements, the method adjusts the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard specification requirements. This method obtains the position of the support point when the stress ratio of the pipeline meets the standard specification requirements, i.e., the position of the support on the pipeline. This avoids relying on manual experience to determine the position of the support, which helps to improve the accuracy of the determined support position.

[0010] Secondly, embodiments of this application also provide an apparatus for determining the position of a support arranged on a pipeline, wherein the stress ratio of the pipeline at the determined position meets the requirements of standard specifications. The apparatus includes an initial position determination unit, a stress ratio determination unit, a stress ratio judgment unit, and an adjustment unit.

[0011] The initial position determination unit is used to determine the initial position of the point on the pipeline where the support will be placed; the stress ratio determination unit is used to determine the stress ratio of the pipeline when the support point is in the initial position, based on the initial position determined by the initial position determination unit; the stress ratio judgment unit is used to determine whether the stress ratio determined by the stress ratio determination unit meets the standard specification requirements; the adjustment unit is set so that if the stress ratio judgment unit determines that the stress ratio determined by the stress ratio determination unit does not meet the standard specification requirements, the adjustment unit can adjust the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard specification requirements. At this point, the position of the support point is the position of the support placed on the pipeline.

[0012] The apparatus provided in this application for determining the position of a support on a pipeline uses a stress ratio determination unit to determine the stress ratio of the pipeline when the support point is in its initial position. If the stress ratio of the pipeline at the initial position does not meet standard specifications, an adjustment unit adjusts the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard specifications. This obtains the position of the support point when the pipeline stress ratio meets the standard specifications, i.e., the position where the support is placed on the pipeline. This avoids relying on manual experience when determining the support placement position, ensuring that the determined support placement position makes the pipeline at that location meet standard specifications while improving the accuracy of the determined support placement position.

[0013] Thirdly, embodiments of this application also provide a computer storage medium storing a computer program, which, when run by a processor, implements the method provided in the embodiments of the first aspect of this application. Attached Figure Description

[0014] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0015] Figure 1 This is a schematic diagram showing the stress ratio of the pipe at a given support location under different operating conditions.

[0016] Figure 2 This is a schematic diagram that uses the first type of numbers to represent the position of the points on the support.

[0017] Explanation of reference numerals in the attached figures: 11. First stress ratio; 12. Second stress ratio.

[0018] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0019] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0020] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0021] In related technologies, the arrangement of supports on pipelines is usually determined by human experience. However, this method has problems such as the stress on the pipeline at the support placement location not meeting the requirements of standard specifications and the low accuracy of the determined support placement location.

[0022] To address the aforementioned issues, embodiments of this application provide a method and apparatus for determining the position of a support arranged on a pipeline, as well as a computer storage medium.

[0023] This application provides a method for determining the location of a support to be placed on a pipeline (hereinafter referred to as the determination method), wherein the stress ratio of the pipeline at the determined location meets the requirements of the standard specification. The determination method may include the following steps: S10: Determine the pipeline on which the support will be placed; S20: Determine the initial position of the point on the pipeline where the support can be placed, based on the pipeline; S30: Determine the stress ratio of the pipeline at the initial position of the support point, based on the initial position of the support point; S40: Determine whether the stress ratio determined in step S30 meets the requirements of the standard specification. If it does not meet the requirements of the standard specification, adjust the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the requirements of the standard specification. The position of the support point at this time is the position of the support placed on the pipeline.

[0024] The method provided in the embodiments of this application determines the stress ratio of the pipeline when the support point is in its initial position. If the stress ratio of the pipeline does not meet the standard requirements when the support point is in its initial position, the method adjusts the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard requirements. This obtains the position of the support point when the stress ratio of the pipeline meets the standard requirements, i.e., the position of the support on the pipeline. This avoids relying on manual experience to determine the position of the support, which helps to improve the accuracy of the determined support position.

[0025] See Figure 1 , Figure 1 This is a schematic diagram showing the stress ratio of the pipe at the determined support location under different operating conditions. The first stress ratio 11 is the stress ratio of the pipe at the support location determined by the determination method provided in the embodiments of this application, and the second stress ratio 12 is the stress ratio of the pipe at the support location determined by human experience; the 900 condition is the pipe's own weight, the 711 condition is the combination of the pipe's own weight and the pipe's thermal expansion, the 511 condition is the combination of the pipe's own weight and the operating reference earthquake SL-1, and the 512 condition is the combination of the pipe's own weight and the safe shutdown earthquake SL-2.

[0026] Depend on Figure 1 It can be seen that under operating conditions 900, 711, and 511, the first ratio 11 is less than the second ratio 12. That is, the stress ratio of the pipe at the support arrangement position determined by the determination method provided in the embodiments of this application is less than the stress ratio of the pipe at the support arrangement position determined by human experience. The support arrangement position determined by the determination method provided in the embodiments of this application is more accurate than the support arrangement position determined by human experience.

[0027] In some embodiments, the bracket can be a limiting bracket, a fastening bracket, a damper, or a constant force spring support.

[0028] In some embodiments, the determination method provided in this application can be used to determine the arrangement position of supports on orthogonal pipelines parallel to the adopted coordinate axis and the arrangement position of supports on inclined pipelines of rubber parallel to the adopted coordinate axis. The adopted coordinate axis is, for example, a coordinate axis formed by the length, width, and height of a nuclear power plant building.

[0029] Pipelines include, for example, ventilation ducts, cooling water pipes for fire-fighting equipment, process pipelines, oil or natural gas transmission pipelines, chemical pipelines, or marine pipelines.

[0030] In some embodiments, in step S10, the pipeline is determined based on the design requirements of the nuclear pipeline. In such embodiments, determining the pipeline based on the design requirements of the nuclear pipeline can simulate the actual pipelines within a nuclear power plant building, thereby enabling the determination method provided by the embodiments of this application to determine the arrangement of supports on the actual pipelines within a nuclear power plant building, providing support for the design of pipelines within a nuclear power plant building.

[0031] In some embodiments, step S30 may specifically include the following steps: S31: determining the stress value at each point of the pipe based on the initial position of the support point; S32: determining the stress ratio of the pipe at the initial position of the support point based on the stress value and the limit of the standard specification. In such an embodiment, the above steps enable the determination of the pipe stress ratio based on the stress value at each point of the pipe. Compared to determining the pipe stress ratio based on the stress value at a single point of the pipe, this approach improves the accuracy of the determined pipe stress ratio, thereby improving the accuracy of the determined support placement position.

[0032] In some embodiments, in step S31, based on the initial position of the support points, the position of the support points and the function of the support are used as boundary conditions to determine the stress values ​​of the pipeline, and the stress values ​​of each point of the pipeline are determined using the finite element method. In such embodiments, using the position of the support points as boundary conditions to determine the stress values ​​of the pipeline used for arranging the support ensures that the stress values ​​of the pipeline used for arranging the support can be determined. This allows for the determination of the support placement position based on the stress values ​​of the pipeline used for arranging the support, avoiding the inclusion of stress values ​​from other pipelines not used for arranging the support in the process of determining the support placement position, thus improving the accuracy of the determined support placement position. Simultaneously, using the position of the support points and the function of the support as boundary conditions to determine the stress values ​​of the pipeline allows for the acquisition of stress values ​​at each point of the pipeline with different support placement positions and different support arrangements, thereby enabling the acquisition of the maximum stress ratio of the pipeline with different support placement positions and different support arrangements.

[0033] In some embodiments, in step S40, if the stress ratio of the pipeline is greater than the safety value required by the standard specification, the position of the support points and the functional type of the support are adjusted. Since pipelines require long-term service, if the stress ratio of the pipeline is greater than the safety value required by the standard specification, cracking is likely to occur during the pipeline's service life, affecting its service life. Therefore, in the embodiments of this application, after determining that the stress ratio of the pipeline is greater than the safety value required by the standard specification, the position of the support points and the functional type of the support are adjusted to avoid affecting the service life of the pipeline due to the arrangement of the support, ensuring that the pipeline can serve for a long time.

[0034] In some embodiments, the security value required by the standard specification can be 1.

[0035] In some embodiments, step S40 may specifically include the following steps: S41: using a first type of number to represent the position of the support point and using a second type of number to represent the function of the support; S42: determining the evaluation function of the support based on the operating conditions of the pipeline; S43: updating the position of the support point and the function of the support, and using the evaluation function to determine the optimal pipeline stress ratio based on the updated position of the support point and the function of the support; S44: determining the optimal position and function of the support point based on the determined optimal pipeline stress ratio. In such an embodiment, the evaluation function of the support is determined by the operating conditions of the pipeline, and the position of the support point and the function of the support are updated. Based on the evaluation function of the support, the updated position of the support point, and the updated function of the support, the optimal pipeline stress ratio is determined. This ensures that the determined optimal pipeline stress ratio meets the standard specifications under various operating conditions, and also determines the optimal point, position, and function of the support, further improving the accuracy of the determined support placement.

[0036] See Figure 2 , Figure 2 This is a schematic diagram using first-class numerals to represent the positions of points on the support frame. Figure 2 In the diagram, the numbers represent the positions of the points on the stent. Different numbers represent different positions of the points on the stent. For example, number 1998 and number 1972 represent the positions of two different points on the stent.

[0037] In some embodiments, when the function of the support is represented by the second type of numbers, it can be represented by 1 to 7. Specifically, 1 to 3 correspond to limiting supports in different directions, 1 corresponds to a limiting support in the axial direction perpendicular to the horizontal and vertical directions, 2 corresponds to a limiting support in the horizontal direction, 3 corresponds to a limiting support in the vertical direction; 4 corresponds to a fastening support; 5 to 6 correspond to dampers in different directions, 5 corresponds to a damper in the horizontal direction, 6 corresponds to a damper in the vertical direction; 7 corresponds to a constant force spring support.

[0038] In some embodiments, in step S42, the evaluation function of the support can be determined based on the pipeline's self-weight condition (900 condition), thermal expansion condition (711 condition), and seismic condition (511 condition, 512 condition).

[0039] In some embodiments, in step S42, the evaluation function of the determined support may include two evaluation functions: one set of evaluation functions is the stress ratio of the pipeline under the self-weight, thermal expansion and seismic conditions determined by the rigid support, and the other set of evaluation functions is the stress ratio of the pipeline under the self-weight and thermal expansion conditions determined by the rigid support, and the stress ratio of the pipeline under seismic conditions determined by the damper.

[0040] In some embodiments, in step S43, when updating the position of the support point and the function of the support, the position of the support point and the function of the support can be combined to obtain multiple particles, and then a particle swarm is obtained; wherein, each particle represents the position of a support point and the function of that support, and the obtained particle swarm is an N×2D matrix, where N represents the number of particles obtained by combination and D represents the number of supports.

[0041] Specifically, the resulting particle swarm is, for example, [1988 1972 1966 1 1 3], which indicates that rigid supports in the axial, axial and vertical directions are placed at the positions of 1988, 1972 and 1966, respectively.

[0042] In some embodiments, in step S43, after obtaining the particle swarm, the particle swarm and its particles (i.e., the positions of the points of the support and the function of the support) can be updated in the direction of obtaining the optimal pipe stress ratio, so as to combine the particle swarm with the finite element method to determine the arrangement position of the support. This can reduce the time for determining the arrangement position of the support, which is beneficial to improving the efficiency of determining the arrangement position of the support, and can also ensure the accuracy of the determined arrangement position of the support, which is beneficial to improving the accuracy of the determined arrangement position of the support.

[0043] In some embodiments, in step S43, the particles can be updated according to the following relationship: .

[0044] .

[0045] In the formula, Let i be the local attraction point of the i-th particle in the j-th dimension, where i is the number of particles and j is the dimension corresponding to the dimension. Let be the local attraction factor of the i-th particle in the j-th dimension. ∈(0,1); Let be the optimal position experienced by the i-th particle in the j-th dimension. ∈(0,1); The optimal position in dimension j experienced by all particles.

[0046] Let i be the position of the i-th particle in the j-th dimension before the update. Let be the updated position of the i-th particle in the j-th dimension; t is the average best position of the particle swarm; w is the compression-expansion coefficient, which varies with the number of updates, w = 0.5 + 0.5 × (gt) / g, where g is the total number of updates required and t is the current update number; It is a random number. ∈(0,1).

[0047] Embodiments of this application also provide a device for determining the position of a support arranged on a pipeline (hereinafter referred to as the determining device), wherein the stress ratio of the pipeline at the determined position meets the requirements of standard specifications. The determining device may include an initial position determining unit, a stress ratio determining unit, a stress ratio judging unit, and an adjustment unit.

[0048] The initial position determination unit is used to determine the initial position of the point on the pipeline where the support will be placed; the stress ratio determination unit is used to determine the stress ratio of the pipeline when the support point is in the initial position, based on the initial position determined by the initial position determination unit; the stress ratio judgment unit is used to determine whether the stress ratio determined by the stress ratio determination unit meets the standard specification requirements; the adjustment unit is set so that if the stress ratio judgment unit determines that the stress ratio determined by the stress ratio determination unit does not meet the standard specification requirements, the adjustment unit can adjust the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard specification requirements. At this point, the position of the support point is the position of the support placed on the pipeline.

[0049] The determination device provided in the embodiments of this application determines the stress ratio of the pipeline when the support point is in the initial position through a stress ratio determination unit. When it is determined that the stress ratio of the pipeline when the support point is in the initial position does not meet the standard specification requirements, the device adjusts the position of the support point and the functional type of the support through an adjustment unit until the stress ratio of the pipeline meets the standard specification requirements. This obtains the position of the support point when the stress ratio of the pipeline meets the standard specification requirements, i.e., the position where the support is placed on the pipeline. This avoids relying on manual experience to determine the placement position of the support, ensuring that the determined placement position of the support makes the pipeline at that location meet the standard specification requirements, and improving the accuracy of the determined placement position of the support.

[0050] In some embodiments, the stress ratio determination unit is configured to determine the stress value at each point of the pipe based on the initial position of the support point. The stress ratio determination unit is also configured to determine the stress ratio of the pipe at the initial position of the support point based on the stress values ​​at each point of the pipe and the limits specified in the standard specification. In such an embodiment, the stress ratio determination unit can determine the stress ratio of the pipe based on the stress values ​​at each point of the pipe. Compared to determining the stress ratio of the pipe based on the stress value at a single point of the pipe, this configuration improves the accuracy of the determined stress ratio of the pipe, thereby improving the accuracy of the determined support placement position.

[0051] In some embodiments, the adjustment unit is further configured to adjust the position of the support points and the functional type of the support if the stress ratio of the pipeline is greater than the safety value required by the standard specification. Since pipelines require long-term service, if the stress ratio of the pipeline is greater than the safety value required by the standard specification, cracking is likely to occur during the pipeline's service life, affecting its service life. Therefore, in the embodiments of this application, after determining that the stress ratio of the pipeline is greater than the safety value required by the standard specification, the adjustment unit adjusts the position of the support points and the functional type of the support to avoid affecting the service life of the pipeline due to the arrangement of the support, ensuring that the pipeline can serve for a long time.

[0052] Embodiments of this application also provide a computer storage medium storing a computer program, which, when run by a processor, implements the method provided in the embodiments of the first aspect of this application.

[0053] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0054] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A method for determining the location of a support arranged on a pipe, wherein the stress ratio of the pipe at the determined location meets standard specifications, characterized in that, It includes the following steps: S10: Determine the pipe to be arranged with the support; S20: Determine the initial position of the point on the pipe where the support can be placed; S30: Determine the stress ratio of the pipe when the point of the support is in the initial position, based on the initial position of the support point; S40: Determine whether the stress ratio determined in step S30 meets the standard specifications. If it does not meet the standard specifications, adjust the position of the support point and the function type of the support until the stress ratio of the pipeline meets the standard specifications. At this time, the position of the support point is the position of the support arranged on the pipeline.

2. The method according to claim 1, characterized in that, In step S10, the pipeline is determined based on the design requirements of the nuclear pipeline.

3. The method according to claim 1, characterized in that, Step S30 specifically includes the following steps: S31: Determine the stress value at each point of the pipe based on the initial position of the support. S32: Determine the stress ratio of the pipe at the point of the support in the initial position based on the stress value and the limit value of the standard specification.

4. The method according to claim 3, characterized in that, In step S31, based on the initial position of the support point, the position of the support point and the function of the support are used as boundary conditions to determine the stress value of the pipeline, and the stress value of each point of the pipeline is determined using the finite element method.

5. The method according to claim 1, characterized in that, In step S40, if the stress ratio of the pipeline is greater than the safety value required by the standard specification, the position of the support point and the functional type of the support are adjusted.

6. The method according to claim 5, characterized in that, Step S40 specifically includes the following steps: S41: The position of the points of the bracket is represented by the first type of numbers, and the function of the bracket is represented by the second type of numbers; S42: Determine the evaluation function of the support based on the operating conditions of the pipeline; S43: Update the position of the support point and the function of the support, and use the evaluation function to determine the optimal stress ratio of the pipe with the updated position of the support point and the function of the support. S44: Based on the determined optimal pipe stress ratio, determine the location and function of the optimal point of the support.

7. An apparatus for determining the position of a support arranged on a pipe, wherein the stress ratio of the pipe at the determined position meets the requirements of a standard specification, characterized in that, The device includes: An initial position determination unit is used to determine the initial position of a point on the pipe where the support will be placed, where the support can be placed; A stress ratio determination unit is used to determine the stress ratio of the pipe when the point of the support is in the initial position, based on the initial position determined by the initial position determination unit. The stress ratio judgment unit is used to determine whether the stress ratio determined by the stress ratio determination unit meets the requirements of the standard specification. An adjustment unit is configured such that if the stress ratio judgment unit determines that the stress ratio determined by the stress ratio determination unit does not meet the standard specification requirements, the adjustment unit can adjust the position of the support point and the functional type of the support until the stress ratio of the pipeline meets the standard specification requirements. At this time, the position of the support point is the position of the support arranged on the pipeline.

8. The apparatus according to claim 7, characterized in that, The stress ratio determination unit is configured to determine the stress value of each point of the pipe based on the initial position of the support. The stress ratio determination unit is further configured to determine the stress ratio of the pipe at the initial position of the support point based on the stress values ​​at various points of the pipe and the limits of the standard specifications.

9. The apparatus according to claim 7, characterized in that, The adjustment unit is further configured to adjust the position of the support point and the functional type of the support if the stress ratio of the pipeline is greater than the safety value required by the standard specification.

10. A computer storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the method described in any one of claims 1-6.

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