【正文】 1 摘 要 城鎮(zhèn)燃?xì)饣浅鞘鞋F(xiàn)代化的重要標(biāo)志之一。城鎮(zhèn)燃?xì)庠诎l(fā)展生產(chǎn)、 提高人民生活水平、節(jié)約能源、減輕污染、改善環(huán)境等方面起著重要作用。 本設(shè)計(jì)主要是針對(duì)開(kāi)發(fā)區(qū)進(jìn)行燃?xì)夤芫W(wǎng)的規(guī)劃，該設(shè)計(jì)采用天然氣為氣源，燃?xì)夤艿乐饕捎娩摴堋Ｊ紫雀鶕?jù)城市的面積及人口情況對(duì)開(kāi)發(fā)區(qū)的燃?xì)庑栌昧窟M(jìn)行確定，然后根據(jù)用氣量及規(guī)劃要求 進(jìn)行管網(wǎng)設(shè)計(jì)。在設(shè)計(jì)燃?xì)夤芫W(wǎng)時(shí)，應(yīng)全面考慮經(jīng)濟(jì)、技術(shù)等方面因素，選擇經(jīng)濟(jì)合理的最佳方案。 因此本設(shè)計(jì)選用了中壓一級(jí)管網(wǎng)系統(tǒng)。 根據(jù)管網(wǎng)的布置和流量，經(jīng)過(guò)水力計(jì)算的一系列步驟確定管徑；再將管徑作為已知條 件，再選取調(diào)壓設(shè)施以及用戶燃具后滿足供應(yīng)的壓力要求，設(shè)計(jì)具有一定的技術(shù)性和經(jīng)濟(jì)性。 關(guān)鍵詞： 天然氣 管網(wǎng) 用氣量 管徑 2 Abstract Universality of Gas in city is an important sign of the modernization of city. In the development and production of city, improving living standards, energy conservation, reducing pollution and improving the environment, gas plays as an important role. The theme of this paper is to design the gas work in the development zone, taking the natural gas as the gas source, the steel pipe as the main gas pipeline. Firstly, according to the city area and the demographic situation of the development zone to determine the amount of gas needed。 and secondly to design the work according to the gas consumption and the requirements of the plan. In the design of gas pipeline work, the economic, technological and other factors should be considered Comprehensively。 finally, choose the best economical solution. therefore this design has selected center presses level of pipe works systems. In the above pipe work system, used the region to adjust the pressure to stand to the region air feed way. According to pipe work arrangement and current capacity, process water power putation a series of steps definite caliber。 Again the caliber took the datum, after selects the accent to press the facility as well as the user again burns has satisfies the supply the pressure request. The design has the very good technical nature and the efficiency. Keywords: The Natural gas The pipe work Gas consumption Diameter 3 目 錄 第一章 緒 論 .................................................................................. 1 概述 ......................................................................................................... 1 自然地理環(huán)境概況 ................................................................................. 1 地理位置 ...................................................................................... 1 氣候條件 ...................................................................................... 2 設(shè)計(jì)原始資料 ......................................................................................... 2 城市面積 ...................................................................................... 2 燃?xì)庥脩? ...................................................................................... 2 設(shè)計(jì)范圍 ................................................................................................. 2 第二章 燃?xì)獾男再|(zhì)計(jì)算 ................................................................ 3 氣源 ......................................................................................................... 3 氣體性質(zhì) ................................................................................................. 3 平均分子量 .................................................................................. 3 平均密度和相對(duì)密度 .................................................................. 4 粘度 .............................................................................................. 4 爆炸極限 ...................................................................................... 5 混合物的熱值 .............................................................................. 6 華白數(shù) .......................................................................................... 7 燃?xì)赓|(zhì)量要求及燃?xì)獾募映? ................................................................. 7 城鎮(zhèn)燃?xì)赓|(zhì)量要求 ...................................................................... 7 城鎮(zhèn)燃?xì)獾募映? .......................................................................... 8 第三章 燃?xì)庑栌昧考肮┬杵胶? .................................................... 9 用戶類型及供氣原則 ............................................................................. 9 城市用氣量 ........................................................................................... 10 居民生活用戶用氣量 ................................................................ 10 商業(yè)用戶用氣量 ........................................................................ 11 工業(yè)企業(yè)用戶用氣 .................................................................... 12 其他用氣量 ................................................................................ 13 各類用戶用氣量計(jì)算匯總 ................................................................... 13 計(jì)算流量 ............................................................................................... 13 燃?xì)廨斉湎到y(tǒng)的供需平衡 ................................................................... 14 4 儲(chǔ)氣罐 ................................................................................................... 15 所需儲(chǔ)氣量 ................................................................................ 15 高壓球型儲(chǔ)氣罐容積的確定 .................................................... 17 第四章 輸配系統(tǒng)方案的選擇 ...................................................... 18 城鎮(zhèn)燃?xì)廨斉湎到y(tǒng)的組成 ................................................................... 18 燃?xì)夤芫W(wǎng)系統(tǒng)的選擇 ........................................................................... 18 第五章 輸配管網(wǎng)的布置 .............................................................. 20 城鎮(zhèn)燃?xì)夤艿赖牟季€原則 ................................................................... 20 管線布置依據(jù) ............................................................................ 20 高、中壓管網(wǎng)的平面布置 ........................................................ 20 低壓管網(wǎng)的平面布置 ................................................................ 21 管道的縱斷面布置 .................................................................... 22 燃?xì)夤艿来┰秸系K物的設(shè)計(jì) ..............................