【正文】 ....2 天然氣的組成 .....................................................................................................2 管線設(shè)計參數(shù) .....................................................................................................2 管線設(shè)計要求及內(nèi)容 .........................................................................................3 工程概況 ....................................................................................................................33 輸氣管道的工藝計算說明 ..............................................................................................4 天然氣的熱物性計算 ................................................................................................4 天然氣的平均分子量、密度和相對密度 .........................................................4 天然氣壓縮系數(shù)的計算 .....................................................................................4 天然氣的粘度 .....................................................................................................5 定壓摩爾比熱 .....................................................................................................6 管道水力計算 ............................................................................................................64 站場工藝 ..........................................................................................................................8 輸氣管道工程站場種類及名稱 ................................................................................8 概述 .....................................................................................................................8 輸氣站種類及功能 .............................................................................................8 輸氣站的主要功能 ....................................................................................................9 分離 .....................................................................................................................9 清管 .....................................................................................................................9 調(diào)壓計量 .............................................................................................................9 站址選擇 ..................................................................................................................10 站場工藝設(shè)備選型 ..................................................................................................11 簡述 ...................................................................................................................11 分離器的設(shè)計 ...................................................................................................11 除液器設(shè)備設(shè)計及選擇 ...................................................................................125 線路工程 ........................................................................................................................14 線路所處位置及沿線自然條件狀況 ......................................................................14西安石油大學(xué)本科畢業(yè)設(shè)計（論文）II 線路選擇的基本要求 .......................................................................................14 沿線自然條件狀況 ...........................................................................................14 沿線地區(qū)等級劃分 ...........................................................................................14 管道材質(zhì)及壁厚選擇 ..............................................................................................14 材質(zhì)選擇 ...........................................................................................................14 鋼管壁厚的確定 ...............................................................................................15 管道的軸向應(yīng)力及穩(wěn)定性驗算 .......................................................................15 管道敷設(shè) ..................................................................................................................16 管道的敷設(shè)方式 ...............................................................................................16 管道轉(zhuǎn)角 ...........................................................................................................16 線路輔助設(shè)施 ...................................................................................................16 線路走向 ...........................................................................................................17 勘察要求 ...........................................................................................................17 站址選擇步驟 ...................................................................................................17 線路設(shè)計中采取的抗震措施 ...........................................................................17 焊接與檢驗、清管與試壓 ......................................................................................18 焊接與檢驗 .......................................................................................................18 清管和試壓 .......................................................................................................18 閥門與法蘭的選用 ..................................................................................................19 閥門的種類及選用 ...........................................................................................19 法蘭的選用 .......................................................................................................206 輸氣管道工藝計算書 ....................................................................................................21 原始資料及基本物性計算 ......................................................................................21 天然氣輸送流向和氣量分配 ...........................................................................21 天然氣物性參數(shù)計算 .......................................................................................21 輸氣管熱力計算 ......................................................................................................22 管線工藝計算基本參數(shù) ...................................................................................22 定壓摩爾比熱的計算 .....................................................