论文部分内容阅读
针对成品油管网的工艺特点,以由管道、泵、阀门组成的管网系统为研究目标,运用流体网络基本定律建立数学模型,并运用网络分流算法进行计算,进而获得输送周期内管网系统各分支管道的压力和流量等信息,预测管网在预期工况下的实际操作情况。其主要依据是对于任何集中参数的网络,与任何节点关联的所有分支流量的代数和等于该节点的流量。将管网看作一棵树,将余支作为基准分支,通过树枝加余支的办法形成基本回路矩阵,拟定基准分支和初始流量,由拟定的基准分支,任意选取一独立的回路矩阵,计算Jacobi矩阵与阻力矩阵。基于简单管网算例,验证了上述模型和算法的精度、速度以及稳定性,认为其可以为管道设计和运行管理提供参考依据。
According to the technical characteristics of the finished product pipeline network, the pipe network system composed of pipeline, pump and valve is taken as the research goal. By using the basic laws of the fluid network, a mathematical model is established and the network branch algorithm is used to calculate. Then the pipe network system Branch pipeline pressure and flow and other information to predict the actual operation of the pipeline under the expected conditions. The main basis is the algebra of all the branch traffic associated with any node and the traffic equal to that node for any network with centralized parameters. Considering the pipe network as a tree and using the remaining branch as a reference branch, a basic loop matrix is formed by adding branches and branches, a reference branch and an initial flow are drawn up, an arbitrary independent loop matrix is arbitrarily selected from the proposed reference branch, Jacobi matrix and resistance matrix. Based on the simple example of pipe network, the accuracy, speed and stability of the above models and algorithms are verified, and it is considered that it can provide a reference for pipeline design and operation management.