CAD-based visual gas pipe network static simulation system and calculation method thereof

Abstract

The invention discloses a CAD-based visual gas pipe network static simulation system and a calculation method thereof, thereby carrying out simulation calculation on a gas pipe network. The system comprises a data acquisition module, a simulation calculation module and a result display module. The data acquisition module comprises a CAD data input module; the CAD data input module is used for inputting known parameters of hydraulic calculation of a gas pipe network into a real-time database module for storage through a visual CAD graphic environment; the simulation calculation sub-module acquires known hydraulic calculation parameters of the gas pipe network, establishes a gas pipe network simulation model, establishes a node pressure equation set according to known hydraulic calculation parameters of the gas pipe network, and calls a simulation model solving sub-module to solve the gas pipe network simulation model to obtain parameters to be solved, and displays, outputs and stores the calculated values of the parameters to be solved and the known hydraulic calculation parameters of the gas pipe network through an Excel data table or a CAD graph.

Description

technical field [0001] The invention relates to the field of hydraulic calculation, in particular to a CAD-based visualization gas pipeline network static simulation system and a calculation method thereof. Background technique [0002] The hydraulic calculation of the gas pipeline network is an important task in the design of the urban gas pipeline network. The main task of the hydraulic calculation of the gas pipeline network is to calculate the diameter of the pipeline according to the calculated flow rate of the gas and the allowable pressure loss, so as to determine the pipeline investment and pipe material consumption. Calculate the flow rate and pressure loss of the existing pipeline to fully utilize the gas transmission capacity of the pipeline, or decide whether the original pipeline needs to be modified. [0003] The hydraulic calculation of the gas pipeline network is generally divided into three stages: the first stage is to obtain data from the outside world, th...

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Problems solved by technology

[0004] At present, in the first stage of the hydraulic calculation of the same kind of gas pipeline network, the data is obtained from the outside world. At present, the input method of most of the hydraulic calculation of the gas pipeline network is similar to the Excel file. Although the data can also be input, it is not intuitive, and the topology of the gas pipeline network cannot be seen. , such as using the dos version of the hydraulic adjustment software to manually input data, resulting in slow data input, not intuitive, error-prone and difficult to check for errors, and some horizontal adjustment software can also input data from CAD, but the support for CAD Limited, only supports Autocad or supports a specific version of a certain CAD, such as gnet, the specific version of the hydraulic adjustment software can only read data from a specific CAD version, there are great limitations in use, and CAD If files are used to store data, there are still many limitations. Most of the CAD primitives are line segments, polylines, text, etc. If they are used to represent a gas pipeline network, it is difficult to distinguish their specific meanings, such as gnet, through engineering documents Cooperate with CAD files to represent the gas pipeline network, and additional configuration files are required for the pipe segment data, so it is urgent to find a practical method to represent the gas pipeline network structure

[0005] In the second stage of the hydraulic calculation of similar gas pipeline networks, most of them use the node method hydraulic adjustment calculation. During the pipeline network adjustment calculation process, solving the equations takes up most of the time. At present, most of the equations are solved using the Gauss-Seidel iterative method. The speed is relatively slow, and the results can be produced once every few minutes to tens of minutes, resulting in poor user experience

[0006] Most of the third stage of the hydraulic calculation of similar gas pipeline networks are marked on the original map, which limits the pipeline for input data to be a straight line, increasing the complexity of the pipeline network

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