Orifice plate optimization design method and system of pipeline flow regulator
By optimizing the open structure design of orifice plates, using fluid mechanics principles and multi-objective optimization methods, the uneven flow field and flow measurement error problems of orifice plate flow regulator are solved, and the stability of fluid flow and the accuracy of flow measurement is improved.
Patent Information
- Application Number
- CN202510393652.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-07-08
Smart Images
Figure CN120278068A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of flow conditioner design, and relates to an orifice plate optimization design method and system for a pipeline flow conditioner. Background Art
[0002] Fluid transportation involves many fields such as petroleum, chemical industry, natural gas, aerospace, etc. The accurate measurement and stable flow of fluids are crucial for ensuring the efficiency and safety of industrial production processes. To achieve accurate flow measurement, the fluid must maintain a stable flow state at the measurement site. However, in the actual flow measurement process, there are often various pipe fittings in the pipeline system, such as elbows, valves, etc. These pipe fittings cause phenomena such as flow field distortion, vortices, and pressure pulsations in the fluid flow in the pipeline, increasing the instability of the fluid. To ensure the stability of fluid flow, it is usually necessary to install a long pipe section in the pipeline. However, due to the space limitations of the actual production environment, this method is difficult to implement in many cases. Therefore, it is particularly important to install a flow conditioner in the pipeline system to improve the stability of the fluid.
[0003] Currently, there are various types of flow conditioners on the market, including orifice plate type, honeycomb type, grid type, vane type, etc. These flow conditioners are designed to improve the flow state of pipeline fluids and enhance the rectification characteristics of the flow. The orifice plate flow conditioner, as one of the widely used solutions, mainly functions to control the flow direction and velocity of the fluid, reducing the measurement error caused by unstable fluid flow. However, there are still some deficiencies in the existing orifice plate flow conditioners in actual applications. Although different orifice plate designs can improve the fluid flow characteristics to a certain extent, there are still problems such as uneven flow field, large flow losses, and flow measurement errors in the structural design of the orifice plate openings.
[0004] Therefore, in order to further improve the rectification effect of the orifice plate flow conditioner and reduce the measurement error of the flowmeter, it is urgent to optimize the design of the orifice plate opening structure. Summary of the Invention
[0005] The purpose of the present invention is to overcome the above-mentioned disadvantages of the existing technology and propose an orifice plate optimization design method, system, device, and storage medium for a pipeline flow conditioner. This optimization design method can not only effectively improve the stability of fluid flow but also improve the accuracy of flow measurement and reduce the error caused by flow field distortion.
[0006] To achieve the above purpose, the present invention provides the following technical solutions: The present invention provides an orifice plate optimization design method for a pipeline flow conditioner, including: Determine the target physical quantity, model the flow conditioner to be designed, and extract any cross-section within the preset flow distance range downstream of the flow conditioner orifice plate of the distribution contour map of the target physical quantity; Based on the distribution contour map of the target physical quantity on the cross-section and the function holes of the flow conditioner orifice plate, determine the set of design excess values and the set of design target values of the target physical quantity. Subtract the design excess value and the design target value of the target physical quantity on the cross-section to obtain the set of differences of the target physical quantity; Classify the differences in the difference set based on the preset difference interval to obtain several small difference sets of function holes, and sort the several small difference sets of function holes to obtain the function hole set; Based on the function hole set, iteratively adjust several types of function holes one by one. When all types of function holes are adjusted to meet the preset standards, the geometric model of the optimized flow conditioner is obtained.
[0007] The modeling of the flow conditioner to be designed and the extraction of any cross-section within the preset flow distance range downstream of the flow conditioner orifice plate of the distribution contour map of the target physical quantity include: Select a flow model based on the flow state of the fluid, perform simulation modeling on the flow conditioner to be designed, set boundary conditions, and extract the distribution contour map of the target physical quantity on any cross-section within the preset distance range downstream of the flow conditioner orifice plate based on CFD simulation of the target physical quantity.
[0008] The determination of the set of design excess values and the set of design target values of the target physical quantity based on the distribution contour map of the target physical quantity on the cross-section and the function holes of the flow conditioner orifice plate includes: Use the projection of the function hole on the cross-section to divide the cross-section into several units. The range of each unit is determined according to the regional boundary formed by the function hole projection, and extract the set of design excess values of the target physical quantity of each unit; Combined with fluid mechanics theory, obtain the design target value of the target physical quantity on the cross-section through theoretical calculation or fluid simulation. According to the division of the cross-section , extract the set of design target values of the target physical quantity of each unit.
[0009] The classification of the differences in the difference set based on the preset difference interval to obtain several small difference sets of function holes and the sorting of the several small difference sets of function holes to obtain the function hole set includes: Set the absolute value interval of the difference according to the actual working conditions, engineering tolerances, and fluid mechanics principles; determine the set of absolute value intervals of the difference , and ; divide the differences of the target physical quantity that satisfy into a class of function holes, and obtain a small set of differences of several classes of function holes; According to conditions, sort the small sets of differences of several classes of function holes. When the absolute values of the small set intervals of the differences are the same, sum the absolute values of the differences of the function holes in the small set of differences, and the one with the larger sum value is sorted first to obtain the function hole set, denoted as , is the small set of differences of the j-th class of function holes.
[0010] Based on the function hole set, iteratively adjust several classes of function holes one by one. After all classes of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained, including: Based on the small set of differences of the j-th class of function holes, judge the adjustment direction of the j-th class of function holes according to the sign of the difference; When , the adjustment direction of the aperture of the j-th class of function holes is the direction in which the target physical quantity decreases. Adjust the j-th class of function holes with a unified amplitude. After reaching the preset standard, complete the adjustment of the j-th class of function holes; When , the adjustment direction of the aperture of the j-th class of function holes is the direction in which the target physical quantity increases. Adjust the j-th class of function holes with a unified amplitude. After reaching the preset standard, complete the adjustment of the j-th class of function holes; Iteratively adjust several classes of function holes one by one. The adjustment of the (j + 1)-th class of function holes is based on the geometric model of the flow regulator after the j-th class of adjustment. After all classes of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
[0011] It also includes simulating and verifying the geometric model of the optimized flow regulator. When the preset evaluation standard is reached, the optimization of the flow regulator orifice plate is completed.
[0012] The simulation verification of the geometric model of the optimized flow regulator. When the preset evaluation standard is reached, the optimization of the flow regulator orifice plate is completed, specifically: Import the geometric model of the optimized flow regulator into the simulation software and simplify it; Perform mesh division on the fluid domain and verify the mesh independence; Set the flow field working conditions and related boundary condition parameters according to the design requirements, including flow velocity, pressure, and temperature; Set the parameters for simulation calculation, including time step, number of iterations, and convergence criteria; Perform simulation calculation to obtain the cross-section The pressure distribution, velocity distribution, and streamline diagram on it, and conduct analysis; When the evaluation criteria are not met, based on the optimized geometric model of the flow regulator, adjust the optimized geometric model of the flow regulator through the orifice plate optimization design method of the pipeline flow regulator; When the preset evaluation criteria are met, the optimization of the orifice plate of the flow regulator is completed.
[0013] The present invention also provides an orifice plate optimization design system for a pipeline flow regulator, including A target physical quantity related value extraction module, used to determine the target physical quantity, model the flow regulator to be designed, and extract any cross-section within a preset flow distance downstream of the orifice plate of the flow regulator The distribution cloud diagram of the target physical quantity on it; A difference set determination module, used to determine the design excessive value set and design target value set of the target physical quantity based on the distribution cloud diagram of the target physical quantity on the cross-section And the function orifices of the orifice plate of the flow regulator. The difference between the design excessive value and the design target value of the target physical quantity on the cross-section Is used to obtain the difference set of the target physical quantity; A function orifice classification module, used to classify the differences in the difference set based on a preset difference interval to obtain several small difference sets of function orifices, and sort the several small difference sets of function orifices to obtain a function orifice set; An orifice plate adjustment module, used to iteratively adjust several types of function orifices one by one based on the function orifice set. After all types of function orifices are adjusted to meet the preset standards, the optimized geometric model of the flow regulator is obtained.
[0014] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned orifice plate optimization design method for the pipeline flow regulator are implemented.
[0015] The present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above-mentioned orifice plate optimization design method for the pipeline flow regulator are implemented.
[0016] Compared with the prior art, the orifice plate optimization design method of the pipeline flow regulator proposed by the present invention significantly improves the flow rectification characteristics and flow measurement accuracy of the orifice plate through precise performance evaluation and optimization processes. This optimization design method first quantifies the actual performance of each functional orifice, quantifies the difference between the actual performance and the theoretical value of the target physical quantity, and analyzes the difference of the target physical quantity to evaluate the performance of each functional orifice; during the optimization design process, multi-objective optimization is transformed into single-objective optimization design with controlled variables, avoiding local optimal solutions and ensuring global optimization; through non-uniform orifice design, the actual performance of the orifice plate is improved under the condition of ensuring the equivalent diameter ratio; the optimization process is based on the principles of fluid mechanics, simplifies the design steps, reduces the calculation and time costs, and improves the design efficiency at the same time, thus providing an efficient and reliable solution for the design of pipeline flow regulators; finally, through this optimization method, an ideal geometric model of the flow regulator can be obtained, the overall performance of the flow regulator is improved, the flow measurement accuracy and fluid flow characteristics are ensured to be optimized, and further the fluid management and control efficiency in various industrial processes is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0018] Figure 1 It is a flowchart of the orifice plate optimization design method of the pipeline flow regulator of the present invention; Figure 2 It is a flowchart of the specific implementation process of the orifice plate optimization design method of the pipeline flow regulator of the present invention; Figure 3 It is a schematic structural diagram of the orifice plate optimization design system of the pipeline flow regulator of the preferred embodiment of the present invention; Figure 4 It is a schematic structural diagram of the electronic device of the preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following will describe the embodiments of the present disclosure in more detail with reference to the drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.
[0020] It should be understood that the various steps described in the method embodiments of the present disclosure may be executed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this regard.
[0021] As used herein, the term "comprising" and its variations are open-ended, i.e., "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of the functions performed by these devices, modules or units or their interdependent relationships.
[0022] It should be noted that the modifications of "one" and "plural" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more".
[0023] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.
[0024] The flow regulator is designed to adjust the flow state of the fluid to a relatively stable state under a certain flow distance. It is very necessary to select a fluid mechanics parameter to characterize the flow state of the fluid. Common parameters for characterizing the flow state of the fluid include the flow velocity, pressure, etc. of the fluid. Therefore, the rectification characteristics of the flow regulator are often characterized by the distribution of fluid flow parameters such as the flow velocity or pressure at a certain cross-section within a certain flow distance downstream of the orifice plate. In an exemplary embodiment of the present disclosure, a physical quantity represents any hydrodynamic parameter, and a method for optimizing the orifice plate of a pipeline flow regulator for global optimization is proposed. Such as Figure 1 and Figure 2 shown, an exemplary embodiment of the present disclosure provides a method for optimizing the orifice plate of a pipeline flow regulator. The method is a combined orifice plate flow regulator for pressure regulation and speed regulation based on single-objective optimization with control variables. Specifically, the method is as follows: S1. Determine the target physical quantity, model the flow regulator to be designed, and extract the distribution cloud map of the target physical quantity on any cross-section within the preset flow distance downstream of the orifice plate of the flow regulator; S2. Based on the cross-section Determine the distribution contour map of the target physical quantity and the function holes of the flow conditioner orifice plate, and determine the set of design excessive values and the set of design target values of the target physical quantity, cross-section Subtract the design excessive value and the design target value of the target physical quantity to obtain the difference set of the target physical quantity; S3. Classify the differences in the difference set based on a preset difference interval to obtain several small difference sets of function holes, and sort the several small difference sets of function holes to obtain the function hole set; S4. Based on the function hole set, perform iterative adjustment on several categories of function holes one by one. After all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow conditioner is obtained; S5. Perform simulation verification on the geometric model of the optimized flow conditioner. When the preset evaluation standard is met, the optimization of the flow adjustment is completed.
[0025] The following specifically describes the exemplary embodiments of the present disclosure in detail with reference to the accompanying drawings: S1-1. Determine the target physical quantity X , model the flow conditioner to be designed. When modeling, an appropriate flow model can be selected based on the flow state of the fluid; set boundary conditions, including inlet and outlet pressures, inlet flow velocity, fluid type, fluid temperature, etc., and perform CFD simulation to extract any cross-section within a preset flow distance downstream of the flow conditioner orifice plate The distribution contour map of the target physical quantity; S2-1. Use the projection of the function holes of the flow conditioner orifice plate to be designed on the cross-section to divide the cross-section into small units, denoted as , that is, determine the range of each unit according to the regional boundary formed by the function hole projection, so that , and extract the design excessive value of the target physical quantity of each unit. The set of design excessive values is denoted as ; It should be noted that the design excessive value X of the target physical quantity represents the unified value of the target physical quantity on the cross-section during the simulation verification in the design optimization process. During the optimization design process, the design excessive value is compared with the finally expected design target value ; S2-2. Combine the fluid mechanics theory and obtain the cross-section through theoretical calculation or fluid simulation methods The design target value of the target physical quantity on is, according to the division of step 2-1 of the cross-section , extract the design target value of the target physical quantity of each unit , and the set of design target values is represented as ; It should be noted that the design target value of the target physical quantity X means that only when the target physical quantity is on any cross-section between the orifice plate and the cross-section , the target physical quantity on the cross-section can reach the theoretical value , , , and the distance from the orifice plate satisfy ; the theoretical value X of the target physical quantity means the collective term of the theoretical values of the target physical quantity at each point on the cross-section at a specific distance downstream of the orifice plate, which should reach the ideal distribution state.
[0026] Step 2-3, based on the set of design transition values and the set of design target values of the target physical quantity, calculate the difference between the design transition value and the design target value, and the difference is represented as , to obtain the difference of the target physical quantity , and the set of differences of the target physical quantity is represented as ; Step 3-1, set the difference interval considering factors such as the actual situation, engineering tolerance, and fluid mechanics principles; the difference interval is , and satisfies the following conditions: , divide the difference of the target physical quantity that satisfies into one type of function hole to obtain a small set of differences of several types of function holes; It should be noted that the absolute value of the difference characterizes the deviation degree between the design transition value and the design target value. Therefore, consider factors such as the actual situation, engineering tolerance, and fluid mechanics principles to set the difference interval; the conditions for setting the difference interval can ensure that function holes with the same adjustment direction and the same adjustment amplitude are classified into one category. Differences with the same sign mean that the deviation directions of the target physical quantity corresponding to the function hole and the design target value are the same, and function holes in the same interval can be approximately considered to have the same deviation degree of the orifice diameter from the target design value and can be adjusted with a unified amplitude.
[0027] Step 3-2, according to Under the condition that, sort several small sets of differences of function holes. When the absolute values of the intervals of the small sets of differences are the same, the absolute values of the differences of the function holes in the small set of differences can be summed respectively, and then compared. The one with the larger sum value is given priority in sorting, and finally the function hole set is obtained, denoted as , is the small set of differences of the function holes in the j-th interval.
[0028] It should be noted that the sorting is performed from the largest to the smallest absolute value of the difference. In order to adjust the function holes in the order of the magnitude from large to small, because the larger the magnitude, the greater the degree of deviation from the ideal value. Therefore, it is necessary to adjust first to reduce the adjustment error; It should be noted that the classification of the function holes is only carried out once, and for special situations encountered later, a specific function hole can be adjusted individually.
[0029] From the above steps, it can be seen that the adjustment of non-uniform function holes is a multi-objective optimization problem. The exemplary embodiments of the present disclosure intend to take the following steps to convert the adjustment of multi-objective optimization function holes into a single-objective optimization problem of control variables.
[0030] Step 4-1: Based on the function hole set, perform iterative adjustment on several types of function holes one by one. When each type of function hole reaches the preset standard after adjustment, the adjustment of this type of function hole is completed. When all function holes reach the preset standard after adjustment, the geometric model of the optimized flow regulator is obtained, specifically as follows: Based on the small set of differences of the j-th type of function holes, judge the adjustment direction of the j-th type of function holes according to the sign of the difference; When , the adjustment direction of the aperture of the j-th type of function holes is the direction in which the target physical quantity decreases. Perform a unified amplitude adjustment on the j-th type of function holes. After reaching the preset standard, complete the adjustment of the j-th type of function holes; When , the adjustment direction of the aperture of the j-th type of function holes is the direction in which the target physical quantity increases. Perform a unified amplitude adjustment on the j-th type of function holes. After reaching the preset standard, complete the adjustment of the j-th type of function holes; Perform iterative adjustment on several types of function holes one by one. The adjustment of the (j + 1)-th type of function holes is based on the geometric model of the flow regulator after the j-th type of adjustment. After all function holes are adjusted to reach the preset standard, the geometric model of the optimized flow regulator is obtained.
[0031] For example, take the set of the first type of function holes with the number , and judge the adjustment direction of the function holes according to the sign of the difference in the set . Perform a unified amplitude adjustment on the function holes of this type according to the adjustment direction. The most ideal situation is to make the set of the function holes , the specific determination criteria can be determined according to the actual engineering situation, and the specific adjustment is as follows: When , the direction of adjusting the aperture of the function hole is the direction in which the target physical quantity decreases, and a unified amplitude adjustment is performed. When the of the first type of function hole reaches 90%, the adjustment of the first type of function hole is completed; When , the direction of adjusting the aperture of the function hole is the direction in which the target physical quantity increases, and a unified amplitude adjustment is performed. When the of the first type of function hole reaches 90%, the adjustment of the first type of function hole is completed; After the adjustment of the function holes in the set is completed, the adjustment of the function holes in the set is carried out on the geometric model of the adjusted flow regulator. The function holes are iteratively adjusted in the same way until the adjustment of all types of function holes is completed, and the geometric model of the optimized flow regulator is obtained.
[0032] It should be noted that the adjustment direction of the function hole is based on the principle of fluid mechanics to determine the variation law of the target physical quantity with the aperture of the function hole; it is determined that the target physical quantity is positively or negatively correlated with the size of the function hole, and then combined with the positive and negative of the difference to determine the adjustment direction of the function hole.
[0033] After all the above steps are completed, a total simulation verification is carried out: Step 5-1, import the geometric model of the optimized flow regulator into the simulation software and perform necessary simplification processing; mesh the geometric model of the flow regulator to ensure the mesh quality and perform mesh independence verification; set the flow field conditions and relevant boundary condition parameters according to the design requirements, including flow velocity, pressure, temperature, etc.; set the parameters of the simulation calculation, including time step, iteration number, convergence criterion, etc.; Step 5-2, execute the simulation calculation to obtain results such as pressure distribution, velocity distribution, streamline diagram, etc., and perform analysis to verify whether the geometric model of the flow regulator meets the design objectives. When the evaluation standard is not reached, based on the geometric model of the optimized flow regulator, the geometric model of the optimized flow regulator is adjusted again by the orifice plate optimization design method of the pipeline flow regulator; when the preset evaluation standard is reached, the optimization of the orifice plate of the flow regulator is completed.
[0034] It should be noted that when the flow regulator still does not meet the design objectives after one optimization adjustment, when performing the re-adjustment, it is based on the cross-section after the previous optimization Based on the design overvalue and design target value on it, readjust the function holes that do not meet the requirements to ensure the effect of the optimization adjustment and improve the optimization efficiency.
[0035] The present invention proposes a strategy based on the difference between the theoretical value and the actual value as the basis for aperture adjustment; quantifies the actual performance of each function hole, and designs non-uniform apertures based on this. When the equivalent diameter ratio is certain, the actual effect of each function hole is improved; in the optimization design process, based on the basic principle of fluid mechanics, some design targets are transformed into design constraint conditions for a certain step, greatly avoiding the occurrence of local optimal solutions, and can obtain ideal optimization results while reducing the optimization cost and improving the optimization efficiency. Transform the multi-objective optimization problem of the non-uniform orifice plate into a single-objective design optimization method of control variables. This design method can greatly reduce the design cost and the complexity of the design.
[0036] The present invention is supported by fluid mechanics theory, and in the form of subtracting the design theoretical value from the simulation value, quantifies and determines the simulation deviation, and accurately grasps the flow performance of the fluid. A single-objective optimization design method based on control variables is proposed, and the orifice plate aperture is designed and optimized category by category in turn, avoiding the cumbersome situation in the design process.
[0037] As Figure 3 shown, another object of the present invention is to propose an orifice plate optimization design system for a pipeline flow regulator, including: A target physical quantity related value extraction module, used to determine the target physical quantity, model the flow regulator to be designed, and extract the distribution cloud map of the target physical quantity on any cross-section within a preset flow distance range downstream of the orifice plate of the flow regulator ; A difference set determination module, used to determine the design overvalue set and design target value set of the target physical quantity based on the distribution cloud map of the target physical quantity on the cross-section and the function holes of the orifice plate of the flow regulator, and subtract the design overvalue and design target value of the target physical quantity on the cross-section to obtain the difference set of the target physical quantity; A function hole classification module, used to classify the differences in the difference set based on a preset difference interval to obtain several small difference sets of function holes, and sort the several small difference sets of function holes to obtain a function hole set; An orifice plate adjustment module, used to iteratively adjust several categories of function holes one by one based on the function hole set, and when all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
[0038] As Figure 4As shown in the figure, the third objective of the present invention is to provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the orifice plate optimization design method of the pipeline flow regulator are implemented.
[0039] The orifice plate optimization design method of the pipeline flow regulator includes: Determine the target physical quantity, model the flow regulator to be designed, and extract the distribution cloud map of the target physical quantity on any cross-section within the preset flow distance range downstream of the orifice plate of the flow regulator; on the distribution cloud map of the target physical quantity on the cross-section; Based on the distribution cloud map of the target physical quantity on the cross-section and the function holes of the orifice plate of the flow regulator, determine the set of design overvalue and the set of design target value of the target physical quantity. Subtract the design overvalue and the design target value of the target physical quantity on the cross-section to obtain the difference set of the target physical quantity; Classify the differences in the difference set based on a preset difference interval to obtain several small difference sets of function holes, and sort the several small difference sets of function holes to obtain a function hole set; Based on the function hole set, iteratively adjust several categories of function holes one by one. After all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
[0040] The fourth objective of the present invention is to provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps of the orifice plate optimization design method of the pipeline flow regulator are implemented.
[0041] The orifice plate optimization design method of the pipeline flow regulator includes: Determine the target physical quantity, model the flow regulator to be designed, and extract the distribution cloud map of the target physical quantity on any cross-section within the preset flow distance range downstream of the orifice plate of the flow regulator; on the distribution cloud map of the target physical quantity on the cross-section; Based on the cross-section on the distribution cloud map of the target physical quantity and the function holes of the orifice plate of the flow regulator, determine the set of design overvalue and the set of design target value of the target physical quantity. Subtract the design overvalue and the design target value of the target physical quantity on the cross-section to obtain the difference set of the target physical quantity; Classify the differences in the difference set based on a preset difference interval to obtain several small difference sets of function holes, and sort the several small difference sets of function holes to obtain a function hole set; Based on the set of function holes, several types of function holes are iteratively adjusted one by one by category. After all categories of function holes are adjusted to meet the preset standards, the geometric model of the optimized flow regulator is obtained.
[0042] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0043] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.
[0044] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implement the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.
[0045] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Therefore, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent substitutions, and any modification or equivalent substitution that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.
Claims
1. A method for optimizing the orifice plate design of a pipeline flow regulator, characterized in that, Including: Determine the target physical quantity, model the flow conditioner to be designed, and extract the distribution contour map of the target physical quantity at any cross-section within the preset flow distance range downstream of the orifice plate of the flow conditioner. of the target physical quantity; Based on the cross-section and the function holes of the flow conditioner orifice plate, determine the set of design overshoot values and the set of design target values of the target physical quantity. On the cross-section subtract the design overshoot value of the target physical quantity from the design target value to obtain the difference set of the target physical quantity; Classify the differences in the difference set based on a preset difference interval to obtain several small sets of differences of function holes, and sort the several small sets of differences of function holes to obtain a function hole set; Based on the function hole set, iteratively adjust several types of function holes one by one for each category. When all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
2. The orifice plate optimization design method of a pipeline flow regulator according to claim 1, characterized in that Model the flow regulator for the treatment design, and extract the distribution contour map of the target physical quantity on any cross-section within a preset flow distance range downstream of the orifice plate of the flow regulator, including: Select a flow model based on the flow state of the fluid, perform simulation modeling on the flow regulator to be designed, set boundary conditions, and extract the distribution contour map of the target physical quantity on any cross-section within a preset distance range downstream of the orifice plate of the flow regulator based on CFD simulation. 3. The orifice plate optimization design method of a pipeline flow regulator according to claim 1, characterized in that Based on the cross-section Determine the set of design overvalue and the set of design target value of the target physical quantity based on the distribution contour map of the target physical quantity on the cross-section and the function holes of the flow conditioner orifice plate, including: Divide the cross-section by the projection of the function hole on the cross-section into several units, and determine the range of each unit according to the boundary of the area formed by the projection of the function hole, and extract the set of design transition values of the target physical quantity of each unit; Combined with fluid mechanics theory, the design target value of the target physical quantity on the cross-section is obtained through theoretical calculation or fluid simulation. According to the division of the cross-section , the set of design target values of the target physical quantity for each unit is extracted. 4. The orifice plate optimization design method of a pipeline flow regulator according to claim 1, characterized in that The step of classifying the differences in the difference set based on a preset difference interval to obtain several small sets of differences of function holes, and sorting the several small sets of differences of function holes to obtain a function hole set includes: Set the absolute value interval of the difference according to the actual working conditions, engineering tolerances, and fluid mechanics principles; determine the set of absolute value intervals of the difference , and ; divide the differences of the target physical quantity that satisfy into a class of function holes to obtain several small sets of differences of function holes; According to the conditions, sort several small sets of differences of function holes. When the absolute values of the intervals of the small sets of differences are the same, sum the absolute values of the differences of the function holes in the small sets of differences, and sort them in priority according to the larger sum value to obtain a set of function holes, denoted as , is the small set of differences of the j-th type of function hole.
5. The orifice plate optimization design method of a pipeline flow regulator according to claim 4, characterized in that The step of, based on the function hole set, iteratively adjusting several types of function holes one by one for each category. When all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained includes: Based on the small set of differences of the j-th type of function hole, judge the adjustment direction of the j-th type of function hole according to the sign of the difference; When the aperture adjustment direction of the j-th type of function hole is the direction in which the target physical quantity decreases, the j-th type of function hole is adjusted with a unified amplitude, and after reaching the preset standard, the adjustment of the j-th type of function hole is completed; When is true, the direction of adjusting the aperture of the j-th type of function hole is the direction in which the target physical quantity increases. The j-th type of function hole is adjusted with a unified amplitude. After reaching the preset standard, the adjustment of the j-th type of function hole is completed; Iteratively adjust several types of function holes one by one for each category. The adjustment of the (j + 1)-th type of function hole is based on the geometric model of the flow regulator after the j-th adjustment. When all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
6. The orifice plate optimization design method of a pipeline flow regulator according to claim 1, characterized in that, It further includes simulating and verifying the geometric model of the optimized flow regulator. When the preset evaluation standard is met, the optimization of the flow regulator orifice plate is completed.
7. The orifice plate optimization design method of a pipeline flow regulator according to claim 6, characterized in that, The step of simulating and verifying the geometric model of the optimized flow regulator. When the preset evaluation standard is met, the optimization of the flow regulator orifice plate is completed, specifically: Import the geometric model of the optimized flow regulator into simulation software and simplify it; Perform mesh division on the fluid domain and verify mesh independence; Set the flow field conditions and related boundary condition parameters according to the design requirements, including flow velocity, pressure, and temperature; Set the parameters for simulation calculation, including time step, number of iterations, and convergence criterion; Execute simulation calculations to obtain the pressure distribution, velocity distribution, and streamline diagram on the cross-section and perform an analysis; When the evaluation standard is not met, based on the geometric model of the optimized flow regulator, adjust the geometric model of the optimized flow regulator again through the orifice plate optimization design method of the pipeline flow regulator; When the preset evaluation standard is met, the optimization of the flow regulator orifice plate is completed.
8. An orifice plate optimization design system for a pipeline flow regulator, characterized in that, Including The target physical quantity related value extraction module is used to determine the target physical quantity, model the flow conditioner to be designed, and extract the distribution cloud diagram of the target physical quantity at any cross-section within the preset flow distance downstream of the orifice plate of the flow conditioner. The difference set determination module is used to determine the design overvalue set and the design target value set of the target physical quantity based on the distribution contour map of the target physical quantity on the cross-section and the function holes of the flow regulator orifice plate, and subtract the design overvalue and the design target value of the target physical quantity on the cross-section to obtain the difference set of the target physical quantity; A function hole classification module, configured to classify the differences in the difference set based on a preset difference interval to obtain several small sets of differences of function holes, and sort the several small sets of differences of function holes to obtain a function hole set; An orifice plate adjustment module, configured to, based on the function hole set, iteratively adjust several types of function holes one by one for each category. When all categories of function holes are adjusted to meet the preset standard, the geometric model of the optimized flow regulator is obtained.
9. An electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the orifice plate optimization design method of the pipeline flow regulator according to any one of claims 1-7 are implemented.
10. A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the steps of the orifice plate optimization design method of the pipeline flow adjuster according to any one of claims 1-7.