【正文】 摘 要 昭通 市 位于云南省 東 北 部 ， 是云南省重要的 文化發(fā)源地 基地，是滇東 地區(qū)的重要城市 ， 昭通 市 的城市配氣工程是一項(xiàng)意義重大的能源基礎(chǔ)建設(shè)項(xiàng)目 。 本 設(shè)計(jì) 是在收集大量技術(shù)資料的基礎(chǔ)上，結(jié)合現(xiàn)階段我國(guó)城市配氣的實(shí)際情況和特點(diǎn)，嚴(yán)格按照國(guó)家燃?xì)庖?guī)范和相關(guān)法規(guī)進(jìn)行設(shè)計(jì)。 根據(jù) 天然氣 需求量、天然氣性質(zhì)組成設(shè)計(jì)， 其主要內(nèi)容有 ：輸氣管道的工藝方案， 昭通 城市門站及分輸站的計(jì)算規(guī)劃，管道的運(yùn)行方案，具體 規(guī)劃 昭通 城市中 壓配氣管網(wǎng)， SCADA 自動(dòng)控制 系統(tǒng) 和 管道防腐 等各方面 對(duì)天然氣 城市配氣 系統(tǒng)進(jìn)行規(guī)劃。 昭通市天然氣利用前景廣闊 ，天然氣利用率將 隨中緬管線的建成迅速上升，預(yù)計(jì)從 2021 年的 45%上升至 2020 年的 70%。 管網(wǎng)設(shè)計(jì)進(jìn)口壓力 400kPa，整個(gè)城市環(huán)網(wǎng)壓力降為 ，小于允許壓力降 130kpa。遠(yuǎn)期昭通 市的用氣量可達(dá)30871m3/h。 關(guān)鍵詞 ： 管道規(guī)劃 ； 城市環(huán)網(wǎng)規(guī)劃 ； 門站 ； SCADA 系統(tǒng)； 壓力機(jī)制 Abstract Situated in the east of Yunnan province, Zhaotong is an important Culture birth place city in Yunnan Province, and the important city of east Yunnan province. Zhaotong’s city gas distribution is a significant energy structure project. This design is a lot of technical information in the collection based on the bination stage of China39。s urban gas distribution and characteristics of the actual situation, in strict accordance with the national Fuel Gas Code and related laws and regulations for the design. According to the demand of natural gas and natural gas properties of position design, its main contents are: gas pipeline technology program, Zhaotong city gate stations and distribution stations puting planning, pipeline operation plan, specific plan Zhaotong City medium voltage distribution pipeline work, SCADA automatic control systems and natural gas pipeline corrosion and other parties on the city gas distribution system planning. Zhaotong City gas utilization prospects, utilization of natural gas pipeline will be built with the rapid rise in Burma is estimated that from 45% in 2021, rose to 70 per cent in 2020. Pipe work design inlet pressure 400kPa, the pressure drop across the city ring , less than the allowable pressure drop 130kpa. Forward Zhaotong City gas consumption up to 30871m3 / h. Keywords: Pipeline planning。 urban ring work planning。 gate stations。 SCADA system。 pressure mechanism 昭通市 城市配氣規(guī)劃設(shè)計(jì) I 目錄 1緒論 .................................................................................................................................... 1 設(shè)計(jì)的背景 ............................................................................................................. 1 設(shè)計(jì)的目的 ............................................................................................................. 1 設(shè)計(jì)的意義 ............................................................................................................. 2 理論依據(jù) ................................................................................................................. 2 設(shè)計(jì)原則 ...................................................................................................... 2 2氣源和市場(chǎng) ........................................................................................................................ 2 氣源 ......................................................................................................................... 2 近期氣源 ...................................................................................................... 2 遠(yuǎn)期氣源 ..................................................................................................... 3 市場(chǎng)分析與預(yù)測(cè) ..................................................................................................... 3 居民用戶 ..................................................................................................... 3 公共建筑 ..................................................................................................... 3 工業(yè)用氣 ................................................................................................................ 4 不可預(yù)見量 ............................................................................................................ 5 各類用戶用氣量匯總 ............................................................................................ 5 3昭通市的城市配氣系統(tǒng) .................................................................................................... 6 輸配系統(tǒng)規(guī)劃原則 ................................................................................................. 6 輸配系統(tǒng)壓力級(jí)制及供氣方案 ............................................................................. 6 . 壓力級(jí)制 ................................................................................................... 6 管網(wǎng)總體規(guī)劃 ............................................................................................. 7 輸配系統(tǒng)設(shè)計(jì) ......................................................................................................... 9 城區(qū)中低壓輸配管網(wǎng) .................................................................................. 9 城市天然氣管網(wǎng)系統(tǒng)布線原則 ................................................................ 11 4供需平衡 .......................................................................................................................... 12 天然氣的需用工況 ............................................................................................... 12 月用氣工況 ................................................................................................ 12 日用氣工況 ................................................................................................ 13 天然氣的小時(shí)計(jì)算流量 ....................................................................................... 14 天然氣的生產(chǎn)與使用的平衡 ............................................................................... 16 5 管線用管 .......................................................................................................................... 16 鋼管選擇 .............................................................................................................. 16 鋼管種類選擇 ........................................................................................... 16 鋼級(jí)選擇 ................................................................................................. 17 管材壁厚選擇原則 ......................