城市燃气

城市燃气公司开展地理信息系统（GIS）的建设管理

Construction management of geographic information system developed by city gas company

基于变学习率BP模型的城市燃气短期负荷预测

Forecasting city gas short-period load based on BP model with varied learning rate

城市燃气GIS系统的应用研究及软件开发

A Study on the Development and Application of Urban Gas GIS

在城市燃气工程中推广使用聚乙烯（PE）管材

The Application of Polyethylene Pipe in City Gas Engineering

建立了基于变学习率BP模型的城市燃气短期负荷神经网络预测模型。

The forecasting model has been established based on the BP model with varied learning rate .

梯度RBF在城市燃气负荷短期预测中的应用

Application of Gradient RBF in the Short-term Forecast of Urban Gas Load

液化石油气（LPG）中央供气系统在城市燃气中的应用

Application of Liquefied Petroleum Gas Center Supplement System in City Gas

城市燃气SCADA及信息管理系统设计

Design of Information Management System for Urban Natural Gas SCADA System

城市燃气转换小规模应用LNG技术经济评价

Technical and economic evaluation for civil gas alternative with LNG in small scale

LNG气化装置在城市燃气系统中的应用

Application of LNG Gasification Unit in City Gas System

城市燃气企业SCADA系统功能分布初探

Preliminary Investigation on Function Distribution of SCADA System in Urban Gas Enterprises

城市燃气输配SCADA系统通信软件设计与应用

Design and Application of the Communication Software in SCADA System

CNG和LNG作为城市燃气气源的优越性

The Superiority of CNG and LNG as Town Gas Sources

过去所使用的MIS系统（ManagementInformationSystem），无论从效率、准确度、智能程度上讲，都已经不能满足目前城市燃气管网的精确管理。

The past-used Management Information System ( MIS ) can 't meet the requirements of the current accurate management for urban gas pipeline systems whatever on efficiency , accuracy , and intelligent level .

SCADA系统在城市燃气供应中的应用

Application of SCADA System in City Gas Supply

基于G1法城市燃气事故应急能力评价研究

Research on evaluation of city gas emergency capability based on G1 method

描述了开发的城市燃气SCADA系统的硬、软件设计和实现。

This paper describes the design and realization of the SCADA about urban gas networks .

用径向基（RBF）神经网络对城市燃气系统进行短期负荷预测。

The radial basis function neural network ( RBF ) is used in shortterm gas load forecasting in city gas system .

城市燃气管网应用ERW钢管及其防腐问题

Application of ERW Steel Pipe and Its Corrosion Protection in City Piping Net

为了更好地保证燃气管网运行安全，本文还利用BP神经网络的模式分类和辨别功能，对城市燃气管网漏气点动态定位的神经网络模型进行了探讨。

For guaranteeing the gas pipe-network running safe , the paper explores the dynamically localization to leak gas in city gas pipe-network by the model classify and the distinguishing function of BP nerve network .

通过对城市燃气企业的需求分析，本文全面阐述了燃气GIS系统的基本功能的实现方法和城市燃气的拓展应用。

Based on the analysis of the demands of urban gas enterprises , this dissertation explains implementation of the basic functions and wider application of urban gas in the gas GIS system in an all-round way .

第三：建立了城市燃气企业风险评价指标体系，并构建了ANP与模糊物元相结合的评价方法。

A risk evaluation system for urban gas enterprises was build , and an evaluation method combining ANP and fuzzy matter element was constructed .

分析了铸铁管、焊接钢管和聚乙烯（PE）管3种当前城市燃气管网主干管材质的优缺点。

The advantages and shortcomings of the common materials currently used in town fuel gas pipeline network , namely cast iron pipe , welded steel pipe and polyethylene ( PE ) pipe are analyzed .

建立液化天然气（LNG）工厂，将LNG作为城市燃气气源成为伴生天然气利用的一个新途径。

In this paper , the scheme of the LNG plant is planed based on the yield of the associated gas produced by one oilfield in Hainan Province .

二甲醚可替代LPG作为城市燃气，但管道输送压力不宜过高，供气范围不宜过大。

LPG can be replaced by DME as city gas , but pipeline transmission pressure shall not be too high , and gas supply range shall not be too wide .

论述了通用分组无线服务（GPRS）技术的工作原理、技术特点、优势、不足及其在城市燃气SCADA系统中的应用。

The principle of work , technical characteristics , advantages and disadvantages of General Packet Radio Service ( GPRS ) technology and the application of GPRS to urban gas SCADA system are described .

鉴于我国城市燃气介质将以天然气及液化天然气（LNG）为主，建议焊接钢管为优选，供业主及设计院参考。

Since the town fuel gas used in China is mainly natural gas or LNG , it is suggested that welded steel pipe shall be a preferable choice to be considered by owners and design engineers .

新近兴起的LNG更以高储存效率、高发热量、高安全性、低温、低污染、低价格等突出特点令国内城市燃气供应商和用户共同关注。

LNG rising freshly draws suppliers and consumers ' attentions to utilize , for its protruding character - istic of high storage efficiency , high heat value , high safety , cryogenic temperature , low pollution , low price etc.

建立起SCADA城市燃气生产指挥系统，实现对城市燃气输配管网中的各调压箱，计量箱，商服计量间及CNG加气站等的所有现场生产数据进行实时采集与监控。

A SCADA Urban Gas production chain of command , the city gas pipe network transmission of the pressure tank measurement boxes , uniforms and CNG measuring stations , all the data at the scene of production , acquisition and control .

本文还给出了城市燃气管道风险的F-N曲线，由此确定了适合我国国情的城市燃气管道风险接受准则，根据此准则可以对燃气管道进行评价，确定管道风险等级。

The F-N curve of gas pipeline risk is given , and then the risk acceptance criterion of gas pipeline engineering is estimated . According to this criterion the risk assessment can be carried on to estimate the risk degree of the urban gas pipeline .