查询词典 pipeline inventory

Keywords gas pipeline;control system;optimization;west-to-east gas pipeline;support vector machine

西气东输；输气管道；控制系统；最优化；支持向量机

All in all, TRZ series elastic sealing gas valve suitable for gas pipelines, particularly suitable for underground gas pipeline, from the study of the situation abroad, many countries have adopted flexible natural gas pipeline valve plate, the same nominal diameter flexible valve plate Compared with the ball, have fire protection features, the price is about 30% lower than the ball, use the same effect.

总而言之，TRZ系列弹性密封燃气闸阀适用于燃气管线，特别适用于地下燃气管线，从国外考察的情况来看，许多国家的天然气管线上都采用弹性平板闸阀，同公称通径弹性平板闸阀与球阀相比，都有防火功能，而价格比球阀低30%左右，使用效果相同。

With the domestic long-distance natural gas pipeline ring network built and put into use,urban gas source of the problem has been eased,and urban gas pipeline construction has also entered a golden period.

随着国内天然气长输管道环状管网的建成并投入使用，城市气源问题得到了部分缓解，城市燃气管道也相继进入了建设黄金期。

Since the initial start of buried pipelines results in three-dimen-sional unstable heat transmission , and at initial start the temperature change of the soil around a pipeline is affected by the temperature inside the pipeline and the ground surface temperature annual fluctuation, the differential equation for heat transmission and the boundary value may be line...

埋地输油管道启输过程是三维非稳定传热问题，启输过程中管周土壤温度场的变化受管内热水温度和启输前地表面温度年波幅的影响，可将传热微分方程和边值条件线性组合成两个定解问题，用电子计算机进行数值求解，得出计算公式，以确定预热阶段管路任一点任一时刻的热水介质温度。

The testing data from spot test of heat preservation structure with equal thickness for a certain pipeline were analyzed by means of Fluent software. Through analyzing testing data, the temperature of pipeline surface shows a distribution rule that the temperature of top pipe is high and that of the bottom pipe is low.

针对某运行管道进行现场测温，并应用Fluent软件对测试数据进行分析，发现管道表面温度具有&上高下低&的分布规律，因此，工业管道采用等厚度保温结构设计并不合理。

Buried pipeline response to nearby deep excavation in soft soil is a vital project, which is imbursed by national science fund. Based on the former study, the coupled action of retaining structure, soil and pipeline is firstly considered in this paper.

深基坑开挖工程对邻近地下管线的影响规律研究，是基坑环境工程中的重要课题，也是国家自然科学基金资助重点项目&受施工扰动影响的土体、环境稳定理论和控制方法&的主要研究内容之一。

Regulating valve is installed before the installation of pipe fittings and all have to purge and clean the pipeline because the pipeline of sand, scale, iron, etc. may damage the inner surface of valve, in particular demanding sealing surface.

在安装调节阀前，全部安装管件和管线都要吹扫干净，因为管线中的砂粒、水垢、铁屑等会损坏调节阀内表面，尤其是要求严格的密封面。

The safety of pipeline Before installing the valve, all fittings and pipeline installation should be clean, purge, because pipes in the sand, scale, iron filings, etc.

安全的管线在安装调节阀前，全部安装管件和管线都要吹扫干净，因为管线中的砂粒、水垢、铁屑等会损坏调节阀内表面，尤其是要求严格的密封面。

The seismic disasters features and behavior mechanisms of the buriedwater supply pipeline are analyzed by synthesis and the breakage of thepipe joints caused by seismic wave propagation as main disasters mode isled into. The soil-pipe interaction, and the soil-pipe slippage arediscussed. Statistical experience method resulted from earthquakeinvestigations and theoretical methods based on reliability theory areintroduced. The reliability of buried pipeline is researched. The methodfor estimate connective reliability of network by means of Monte Carlesimulation technique and Breadth First Search method is introduced. Theconnective reliability of water supply pipe network is researched.

本文综合分析了地下供水管道的地震破坏特征和反应机理，引入了以接头破坏作为主要的破坏模式，并探讨了管土间的相互作用和滑移作用等问题；介绍了根据震害调查数据回归的统计经验法和基于可靠性理论的理论分析法，对地下管道的可靠性进行了研究；介绍了利用蒙特卡罗法和网络图论中的广度优先搜索法判定网络连通可靠度的方法，对供水管网的连通可靠性进行了研究；考虑到震害预测方法中的许多参数是随时间变化的，应用灰色理论和概率论，建立了基于GIS 的供水管网动态震害预测模型。

Hammer drill breaking jet fuel pipeline Hammer drill breaking jet fuel pipeline Yesterday afternoon China Railway 15 Bureau Jiangning Shuāng Lóng overpass construction site when the piling work carelessly and 1.5 meters deep in an underground 200 mm diameter pipe to break the jet fuel kerosene leak immediately.

打桩机钻破航崆煤油管盗昨天下问悻中铁十五局在南京江(zuo2 tian1 xia4 wen4 xing4 zhong1 tie3 shi2 wu3 ju2 zai4 nan2 jing1 jiang1)宁双龙街立交桥施工工地打桩作业时，不慎将地下1.5米深处的一根直径200毫米的航崆煤油管盗打破，顿时煤油外泄。

This movement is attested by the Christianization of the rituals and by the popularity of the works of Hutchinson, Preston, and Oliver with Anglo-American Masons.

这一运动的是证明了基督教的仪式和广受欢迎的作品，哈钦森，普雷斯顿，和奥利弗与英美泥瓦匠。

Let her accident, there are already two other property owners to reflect the same situation, these two families are living in sab aunt upstairs, living room is also a 24-hour shaking.

让她意外的是，已经有另两户业主向物业反映了相同情况，这两户都住在卜阿姨家楼上，客厅也是24小时晃动。