We can get the flow rate of pipelines and the hydraulic pressure of nodes by solving the equation sets of nodes , and corresponding application program is developed 通过解节点方程组的方法求解管网的管段流量和节点水压,并编制了相应的应用程序。
3 the concept of basics pipe segment flow is presented . this is a new approach to determine optimal flow distribution of pipe segment and water source 3提出了基管段流量的概念,为解决环状管网中管段和水源的流量最优分配问题提供了一个新的途径。
In the simulation of close gas test , the location of most possible leakage of pipe is judged according to the changing speed of gas pressure at difference leakage positions 在闭气试验时,可通过不同漏气点压力值的变化速度的快慢来判断最不利管段的位置。
In the process of optimal design of water supply networks , we can depend on computers in node demand calculation , initial flow distribution , and finally optimization 在管网的优化计算中,编制了一套完整的计算程序,包括管网的节点流量的计算、管段流量的初始分配和管网的优化计算。
The analysis on the mismatch between transportation equipments and operation condition , more throttling loss and power consumption in qinhuangdao beijing oil pipeline is made 摘要对秦京管道因混输冀东原油后秦皇岛迁安管段输量下降16 % ,造成输油设备与运行工况不相匹配,出现节流损失大、能源浪费大的问题进行了分析。
The calculation of stagnation point position of straight pipeline section with both movable ends and l - type pipeline section with bend at one end and bellows type expansion joint at other end is discussed 摘要探讨了两侧为活动端的直管段及一侧活动端为弯头,而另一侧活动端为波纹管补偿器的水平转角管段驻点位置的计算。
5 . the influence of the joint form was analyzed , and the damping effects of the elastic joint were studied . in the other hand , the structural maximum responses for the three earthquake input model were computed 5分析了沉管隧道管段连接方式对隧道动力特性的影响,研究了管段弹性连接减震效果;同时计算了南京长江沉管隧道三种地震动模型的响应最大一值。
Abstract : this paper analyses axial effort between bend and adjacent straight pipe by integral calculation . in this paper it deduces the computing formula of axial effort , which lays a foundation of stress analysis on bend 文摘:从弯管的受力分析入手,通过积分计算,分析了弯管与相邻直管段的轴向作用力,并推出了该轴向作用力的计算公式,为弯管的应力分析打下了基础。
In data processing , a method based on automated created identification matrix through data transition is emphasized . taking into account the pipes " length , a minimum square summation method is introduced in the part of flow allocation 在数据的处理上,重点介绍了通过数据转换,自动生成管网的管段识别矩阵的方法以及初分流量采用计高幂次管长的最小平方和法。
The calculation result of passed flow rate in pipe section of pipeline network is significantly influenced by the momentum exchange and the local energy losses at junctions for the pipeline network comprised of the pipes of larger diameter and shorter length 摘要对于管径较大、管段长度较短的管网,结点处的动量交换和局部能量损失显著影响管网中管段通过流量的计算结果。