Hydraulic pipe network design analysis integration method based on three-dimensional feature extraction

Abstract

The invention belongs to the technical field of hydraulic pipe network system design analysis, and particularly provides a hydraulic pipe network design analysis integration method based on three-dimensional feature extraction, which comprises the following steps: extracting three-dimensional feature information of a pipe network model in a three-dimensional modeling platform; according to the extracted pipe network three-dimensional model characteristic parameter information, file writing operation is carried out according to a data structure format of a pipe network hydraulics calculation platform, and pipe network hydraulics simulation analysis is carried out on hydraulics calculation software; and the three-dimensional modeling platform reads a calculation result of the hydraulic calculation software, and pipe network hydraulic analysis and display are carried out based on the three-dimensional model. The business process, the data interface, the integration scheme and the like between the three-dimensional modeling platform and the hydraulic computing platform are broken through, design analysis integration of the three-dimensional modeling platform and the pipe network hydraulic computing platform is achieved, real forward modeling is achieved, and repeated modeling is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic pipe network system design and analysis, and specifically relates to an integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction. Background Art

[0002] In the design of the three-dimensional model of the pipe network and the hydraulic analysis work, after the designers arrange the three-dimensional pipelines in the three-dimensional modeling platform, they need to calculate the fluid distribution and resistance under steady-state conditions, simulate the transient changes of the pipe network fluid under factors such as equipment start-up and shutdown, valve operation, and pipeline leakage and blockage, and adjust the pipe diameter, reselect the power equipment, etc. according to the results of the pipe network calculation simulation analysis, and perform iterative optimization again to achieve true forward design. Because the structure and format of the model data of the three-dimensional modeling software of the pipe network and the hydraulic calculation and analysis software are different, it is usually impossible to directly share and exchange model data between different software.

[0003] Therefore, the current approach to the design and hydraulic analysis of the three-dimensional model of the pipe network is to first conduct hydraulic analysis simulation based on the hydraulic performance requirements in the pipe network hydraulic calculation software, and then infer the pipe network model parameters based on the hydraulic simulation results, and then perform a reverse model display on the three-dimensional modeling platform based on the pipe network model parameters. This pipe network system design mode is a typical reverse modeling method, and it is impossible to achieve data exchange between the three-dimensional modeling platform and the hydraulic calculation and analysis software, and it is impossible to perform design iteration and optimization of the pipe network system. The workload is large, the number of reworks is high, and the design efficiency and quality are low. Therefore, there is an urgent need for a method for integrating hydraulic pipe network design and analysis to achieve forward design of pipe network hydraulics and achieve accurate, scientific, efficient, and intelligent design. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction, which realizes the design and analysis integration of a three-dimensional modeling platform and a pipe network hydraulic calculation platform, enables forward modeling, and avoids repeated modeling.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hydraulic pipe network design analysis integrated method based on three-dimensional feature extraction, comprising the following steps: Step 1: Extract three-dimensional feature information from the pipe network model in the three-dimensional modeling platform; Step 2: Based on the characteristic parameter information of the three-dimensional pipe network model extracted in step 1, a file writing operation is performed according to the data structure format of the pipe network hydraulic calculation platform, and a pipe network hydraulic simulation analysis is performed on the hydraulic calculation software; Step 3: The 3D modeling platform reads the calculation results of the hydraulic calculation software and performs hydraulic analysis and display of the pipe network based on the 3D model.

[0006] In a preferred embodiment, the step 1 comprises the following steps: Step 1.1, lightweight the three-dimensional model of the pipe network, and extract the spatial coordinate information of each component in the three-dimensional model; Step 1.2, component classification: divide the components into two categories: pipeline and node; Step 1.3, component traversal: For node-type components, traverse the nodes, calculate the spatial bounding box information of the nodes, and obtain the spatial coordinate maximum point junctionMax and minimum point junctionMin of each node; for pipe-type components, traverse the pipes, calculate the spatial bounding box information of the pipes, and obtain the spatial coordinate maximum point pipeMax and minimum point pipeMin of each pipe; Step 1.4, generate the pipe network matrix: after calculating the spatial bounding box information of the pipe and the node, traverse the pipe and the node, calculate the spatial distance between the junctionMax and the pipeMax and the spatial distance between the junctionMin and the pipeMin between the pipe and the node, if any spatial distance is less than the preset error range, it is considered that the node is connected to the pipe, and establish the association matrix; Step 1.5, Generate a pipe network information table: After calculating the pipe network information, export the Excel table based on the js-xlsx plug-in.

[0007] In the preferred scheme, in the step 2, the exported Excel table is imported into the hydraulic calculation software to perform hydraulic simulation analysis to generate calculation analysis results. The hydraulic simulation analysis includes hydraulic simulation analysis in conventional operating scenarios, hydraulic simulation analysis under specific conditions, long-term simulation analysis, and water hammer simulation analysis.

[0008] In a preferred solution, the conventional operation scenario hydraulic simulation analysis includes hydraulic simulation analysis under the following scenarios: Daily operation scenarios; peak and off-peak scenarios; fire water use scenarios; pump operation scenarios; water tank water level scenarios; system shutdown scenarios.

[0009] In the preferred scheme, the hydraulic simulation analysis under the specific conditions includes: simulation for different pump specifications, installation locations, and operating conditions; simulation for water tank size, installation location, and operating conditions; simulation for new construction, expansion, and reconstruction of the pipeline system; and hydraulic simulation analysis for specific conditions of pipeline merging.

[0010] In the preferred scheme, the long-term simulation analysis includes: water tank simulation, the simulation analysis results determine the water supply and drainage conditions of the water tank; fire extinguishing capacity simulation, the simulation analysis results determine the fire water supply capacity in a specific period of time; pump capacity simulation, the simulation analysis results determine the optimal pump mode during normal periods and fire water supply periods.

[0011] In the preferred scheme, the water hammer simulation analysis includes: the occurrence of extreme pressure under instantaneous water flow; water pressure exceeding the design allowable value; unexpected situation occurrence; transient high-pressure pipeline wall damage; transient low-pressure pipe system sealing ring damage; transient low-pressure life support system risk; water hammer protection plan evaluation.

[0012] In a preferred solution, in step three, the hydraulic analysis and display of the pipe network based on the three-dimensional model includes the following steps: Step 3.1: Optimization of the three-dimensional model of pipeline layout: adjust the characteristic parameters of the pipeline network model according to the results of hydraulic simulation analysis, rearrange the three-dimensional model of the pipeline on the three-dimensional modeling platform, repeat the two-stage work of extracting the three-dimensional characteristic information of the pipeline network model and the hydraulic simulation analysis of the pipeline network, and iterate the optimization until the simulation analysis results of the pipeline network layout model under normal operation, specific conditions, long periods of time, and water hammer scenarios meet the set value range, and then obtain the optimized pipeline network layout model; Step 3.2, GIS background import: export the optimized pipeline layout 3D model in step 3.1 to the hydraulic calculation software, add GIS background, and use it for GIS and BIM fusion design of pipeline network hydraulic model; Step 3.3, data demonstration: display the characteristic parameter information of the three-dimensional pipe network model extracted in the three-dimensional characteristic information extraction stage of the pipe network model and the simulation analysis data demonstration in the hydraulic calculation software; Step 3.4: Visual display of hydraulic analysis: In the hydraulic calculation software, simulate various scenarios in the pipeline network hydraulic simulation and analysis phase to achieve a visual display of the analysis process.

[0013] The present invention provides a hydraulic pipe network design and analysis integrated method based on three-dimensional feature extraction, which has the following beneficial effects: 1. The present invention realizes an integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction. The method realizes forward design and analysis of the hydraulic pipe network system, making the design and analysis of the pipe network hydraulic system more accurate, scientific, efficient and intelligent.

[0014] 2. The data and interface interconnection between the 3D modeling platform and the hydraulic calculation platform is realized, the business process, data interface, and integration solution of the pipeline network hydraulic design and analysis platform are opened up, the design and analysis integration of the 3D modeling platform and the pipeline network hydraulic calculation platform is realized, and true forward modeling is achieved while avoiding repeated modeling.

[0015] 3. It realizes the three-dimensional visualization and delivery of hydraulic pipe network design and analysis results, improves the visualization level of hydraulic pipe network system design, and realizes the intelligent design, auxiliary construction, and visualization delivery of hydraulic pipe network systems.

[0016] 4. It realizes automation and intelligence in the design and analysis process of the hydraulic pipe network system, greatly improves the design efficiency and quality of the hydraulic pipe network system, and reduces the number of rework times in the design of the hydraulic pipe network system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 A schematic diagram of the entire process of an integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction proposed by the present invention; Figure 2 Schematic diagram of the overall workflow for extracting three-dimensional feature information of the pipe network model of the present invention Figure 3 A schematic diagram of part of the codes generated for the pipe network matrix of the present invention; Figure 4 This is a schematic diagram of the pipeline information analysis interface of the present invention; Figure 5 This is a schematic diagram of the node information analysis interface of the present invention; Figure 6 This is a schematic diagram for exporting characteristic information of pipeline and node models of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] A hydraulic pipe network design and analysis integration method based on 3D feature extraction abstracts the pipe network model data in the 3D modeling platform into a computational analysis model, and realizes data exchange, design analysis integration, and iterative optimization with existing pipe network hydraulics computational analysis software.

[0020] The method includes three stages: extraction of three-dimensional feature information of the pipeline network model, pipeline network hydraulic simulation analysis, and pipeline network hydraulic analysis display.

[0021] The three-dimensional feature information extraction stage of the pipeline network model is the basic stage for realizing the integration of pipeline network hydraulic design and analysis. The program is developed based on the BIM lightweight engine to directly extract the feature information of the three-dimensional pipeline network model, including one-click extraction of key parameters of important pipeline network models such as pipelines, connection nodes, water pumps, valves, etc.

[0022] The pipeline network hydraulic simulation and analysis stage is the key stage to realize the integration of pipeline network hydraulic design and analysis. It is necessary to design the interface between the three-dimensional simulation platform and the hydraulic calculation and analysis platform to realize pipeline network hydraulic simulation and analysis modules including hydraulic simulation analysis in routine operation scenarios, hydraulic simulation analysis under specific conditions, long-term simulation analysis, and water hammer simulation analysis.

[0023] The pipeline network hydraulic analysis and display stage is an important stage for realizing the visual delivery of the integrated results of pipeline network hydraulic design and analysis, and is also of great significance for intelligent design and auxiliary construction. The pipeline network hydraulic analysis and display mainly includes functional modules such as pipeline layout 3D model optimization, GIS background import, data demonstration, and hydraulic analysis visualization display.

[0024] A hydraulic pipe network design and analysis integration method based on 3D feature extraction is developed based on the BIM lightweight engine. The feature information of the pipe network 3D model in the 3D modeling platform is directly extracted. The file is written directly according to the data structure mode of the hydraulic calculation platform. The 3D modeling platform then reads the calculation results of the hydraulic calculation software and displays the results based on the 3D model. This realizes the design and analysis integration of the 3D modeling platform and the pipe network hydraulic calculation platform, realizes true forward modeling and avoids repeated modeling. Figure 1 As shown, the method includes three stages: extraction of three-dimensional feature information of the pipeline network model, pipeline network hydraulic simulation analysis, and pipeline network hydraulic analysis display.

[0025] Step 1, the phase of extracting three-dimensional characteristic information of the pipe network model, is the basic phase for realizing the integration of hydraulic design and analysis of the pipe network. Programs are written based on BIM lightweight engines such as BIMFACE, and pipe network model parameters are extracted after importing the 3DE model, so as to realize one-click analysis and extraction of key parameters of important pipe network models such as pipes and connection nodes. For pipes in the pipe network model, the extracted data includes pipe labels, pipe lengths, pipe diameters, materials, starting number, end number, etc. The information that can be directly extracted from the model for other pipe components such as water pumps and valves is limited, mainly including pipe diameters, node numbers, etc. The rest of the information needs to be entered separately in the software interface.

[0026] The overall workflow is as follows Figure 2 As shown. The following steps are included: Step 1.1: Lightweight the three-dimensional model of the pipeline network, including mesh simplification, texture compression, data compression, material compression and other technical methods, and extract the spatial coordinate information of each component in the three-dimensional model.

[0027] Step 1.2: Component classification: divide components into two categories: pipeline and node.

[0028] Step 1.3: For pipeline components, traverse the pipeline and calculate the nodes connected to the pipeline; for node components, traverse the nodes and calculate the pipelines connected to the nodes.

[0029] Specifically, for node-type components, traverse the nodes, calculate the spatial bounding box (BoundingBox) information of the nodes, and obtain the spatial coordinate maximum point junctionMax and minimum point junctionMin of each node; for pipe-type components, traverse the pipes, calculate the BoundingBox information of the pipes, and obtain the spatial coordinate maximum point pipeMax and minimum point pipeMin of each pipe.

[0030] Step 1.4: Generate a pipe network matrix. After extracting the spatial information of each component, the logical relationship of the pipe network connection is calculated through a large number of vector operations. Based on the BoundingBox information of each component, the center point, length and upstream and downstream connection components of the component are calculated to form a pipe network matrix.

[0031] After calculating the BoundingBox information of the pipeline and the node, traverse the pipeline and the node, calculate the spatial distance between the junctionMax and pipeMax and the spatial distance between the junctionMin and pipeMin between the pipeline and the node, if any spatial distance is less than the preset error range, it is considered that the node is connected to the pipeline, and establish an association matrix.

[0032] Some of the codes are as follows Figure 3 shown.

[0033] Step 1.5: Generate a pipe network information table. The relevant pipe and node analysis interface is as follows: Figure 4 and 5 After calculating the pipe network information, the Excel table is exported based on the js-xlsx plug-in, as shown in Figure 6 shown.

[0034] Step 1.6: Import the data into hydraulic calculation software such as KYPipe for calculation and analysis to generate calculation and analysis results.

[0035] Step 2, the pipeline network hydraulic simulation and analysis phase, is the key phase to realize the integration of pipeline network hydraulic design and analysis. According to the pipeline network 3D model feature parameter information extracted in the pipeline network model 3D feature information extraction phase, the file is written in the data structure format of the pipeline network hydraulic calculation platform to realize the pipeline network hydraulic simulation and analysis modules including hydraulic simulation analysis in conventional operation scenarios, hydraulic simulation analysis under specific conditions, long-term simulation analysis, water hammer simulation analysis, etc. It includes the following steps: Step 2.1: Hydraulic simulation analysis of normal operation scenarios. Including: ①Daily operation scenarios; ②Peak and off-peak situations; ③ Firefighting water use scenarios; ④ Pump operation situation; ⑤Water tank water level situation; ⑥System downtime situations, etc.

[0036] Step 2.2: Hydraulic simulation analysis under specific conditions. Including: ①Simulation for different pump specifications, installation locations, and operating conditions; ②Simulation of water tank size, installation location, and operation conditions; ③Simulation of new construction, expansion and reconstruction of pipe systems; ④Hydraulic simulation analysis for specific conditions of pipe system merging.

[0037] Step 2.3: Long-term simulation analysis. Including: ① Water tank simulation: the simulation analysis results determine the water supply and drainage conditions of the water tank; ② Fire extinguishing capacity simulation: the simulation analysis results determine the fire water supply capacity in a specific period of time; ③ Pump capacity simulation: the simulation analysis results determine the optimal pumping mode during normal periods and fire water supply periods.

[0038] Step 2.4: Water hammer simulation analysis. Water hammer simulation analysis is used to evaluate the impact of transient low-pressure and high-pressure events on pipe network hydraulics and water hammer protection. Water hammer simulation analysis includes: ① The occurrence of extreme pressure under instantaneous water flow; ②The water pressure exceeds the design allowable value; ③ Unexpected situations occur, such as low pressure, cavitation, pressure peak, etc.; ④ Transient high-pressure pipeline wall damage; ⑤ Transient low-pressure pipe sealing ring damage; ⑥ Transient low voltage life support system risk; ⑦ Evaluation of water hammer protection scheme.

[0039] Step 3: The pipeline network hydraulic analysis and display stage is an important stage for realizing the visualization and delivery of the integrated results of pipeline network hydraulic design and analysis, and is also of great significance for intelligent design and auxiliary construction. The pipeline network hydraulic analysis and display mainly includes functional modules such as pipeline layout 3D model optimization, GIS background import, data demonstration, and hydraulic analysis visualization display.

[0040] Step 3.1, optimize the three-dimensional model of pipeline layout. Adjust the characteristic parameters of the pipeline network model according to the results of hydraulic simulation analysis, rearrange the three-dimensional model of the pipeline on the three-dimensional modeling platform, repeat the two-stage work of extracting the three-dimensional characteristic information of the pipeline network model and the hydraulic simulation analysis of the pipeline network, and iterate and optimize until the simulation analysis results of the pipeline network layout model in normal operation, specific conditions, long periods of time, water hammer and other scenarios meet the set value range, and then obtain the optimized pipeline network layout model.

[0041] Step 3.2, GIS background import. Export the optimized pipeline layout 3D model in step 3.1 to the hydraulic calculation software, add the GIS background, and realize the GIS and BIM fusion design of the pipeline network hydraulic model.

[0042] Step 3.3, data demonstration. Display the characteristic parameter information of the three-dimensional pipe network model extracted in the three-dimensional characteristic information extraction stage of the pipe network model and the simulation analysis data demonstration in the hydraulic calculation software.

[0043] Step 3.4: Visualization of hydraulic analysis: In the hydraulic calculation software, the simulation of each scenario in the pipeline network hydraulic simulation analysis phase is visualized and analyzed.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hydraulic network design and analysis integrated method based on three-dimensional feature extraction, characterized in that: The following steps are involved: Step 1: Extract three-dimensional feature information from the pipe network model in the three-dimensional modeling platform; Step 2: Based on the characteristic parameter information of the three-dimensional pipe network model extracted in step 1, a file writing operation is performed according to the data structure format of the pipe network hydraulic calculation platform, and a pipe network hydraulic simulation analysis is performed on the hydraulic calculation software; Step 3: The 3D modeling platform reads the calculation results of the hydraulic calculation software and performs hydraulic analysis and display of the pipe network based on the 3D model.

2. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 1 is characterized in that: The step 1 includes the following steps: Step 1.1, lightweight the three-dimensional model of the pipe network, and extract the spatial coordinate information of each component in the three-dimensional model; Step 1.2, component classification: divide the components into two categories: pipeline and node; Step 1.3, component traversal: For node-type components, traverse the nodes, calculate the spatial bounding box information of the nodes, and obtain the spatial coordinate maximum point junctionMax and minimum point junctionMin of each node; for pipe-type components, traverse the pipes, calculate the spatial bounding box information of the pipes, and obtain the spatial coordinate maximum point pipeMax and minimum point pipeMin of each pipe; Step 1.4, generate the pipe network matrix: after calculating the spatial bounding box information of the pipe and the node, traverse the pipe and the node, calculate the spatial distance between the junctionMax and the pipeMax and the spatial distance between the junctionMin and the pipeMin between the pipe and the node, if any spatial distance is less than the preset error range, it is considered that the node is connected to the pipe, and establish the association matrix; Step 1.5, Generate a pipe network information table: After calculating the pipe network information, export the Excel table based on the js-xlsx plug-in.

3. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 2 is characterized in that: In the step 2, the exported Excel table is imported into hydraulic calculation software to perform hydraulic simulation analysis to generate calculation analysis results. The hydraulic simulation analysis includes hydraulic simulation analysis under normal operation scenarios, hydraulic simulation analysis under specific conditions, long-term simulation analysis, and water hammer simulation analysis.

4. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 3 is characterized in that: The conventional operation scenario hydraulic simulation analysis includes hydraulic simulation analysis under the following scenarios: Daily operation scenarios; peak and off-peak scenarios; fire water use scenarios; pump operation scenarios; water tank water level scenarios; system shutdown scenarios.

5. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 3 is characterized in that: The hydraulic simulation analysis under the specific conditions includes: simulation for different pump specifications, installation locations, and operating conditions; simulation for water tank size, installation location, and operating conditions; simulation for new construction, expansion, and reconstruction of the pipeline system; and hydraulic simulation analysis for specific conditions of pipeline system merging.

6. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 3 is characterized in that: The long-term simulation analysis includes: water tank simulation, the simulation analysis results determine the water supply and drainage conditions of the water tank; fire extinguishing capacity simulation, the simulation analysis results determine the fire water supply capacity in a specific period of time; pump capacity simulation, the simulation analysis results determine the optimal pump mode during normal periods and fire water supply periods.

7. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 3 is characterized in that: The water hammer simulation analysis includes: the occurrence of extreme pressure under instantaneous water flow; water pressure exceeding the design allowable value; unexpected situations; transient high-pressure pipeline wall damage; transient low-pressure pipe system sealing ring damage; transient low-pressure life support system risk; and water hammer protection plan evaluation.

8. The integrated method for hydraulic pipe network design and analysis based on three-dimensional feature extraction according to claim 1 is characterized in that: In the step 3, the hydraulic analysis of the pipe network is performed based on the three-dimensional model, including the following steps: Step 3.1: Optimization of the three-dimensional model of pipeline layout: adjust the characteristic parameters of the pipeline network model according to the results of hydraulic simulation analysis, rearrange the three-dimensional model of the pipeline on the three-dimensional modeling platform, repeat the two-stage work of extracting the three-dimensional characteristic information of the pipeline network model and the hydraulic simulation analysis of the pipeline network, and iterate the optimization until the simulation analysis results of the pipeline network layout model under normal operation, specific conditions, long periods of time, and water hammer scenarios meet the set value range, and then obtain the optimized pipeline network layout model; Step 3.2, GIS background import: export the optimized pipeline layout 3D model in step 3.1 to the hydraulic calculation software, add GIS background, and use it for GIS and BIM fusion design of pipeline network hydraulic model; Step 3.3, data demonstration: display the characteristic parameter information of the three-dimensional pipe network model extracted in the three-dimensional characteristic information extraction stage of the pipe network model and the simulation analysis data demonstration in the hydraulic calculation software; Step 3.4: Visual display of hydraulic analysis: In the hydraulic calculation software, simulate various scenarios in the pipeline network hydraulic simulation and analysis phase to achieve a visual display of the analysis process.

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