發(fā)布時間：2018-04-30 13:11

  本文選題：天然氣 + 長輸管道　； 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：管道是連接天然氣開發(fā)與利用的紐帶,大量的天然氣經(jīng)過管道輸送至遠(yuǎn)離氣田的城鎮(zhèn)和工業(yè)區(qū)。近十年來,隨著天然氣管道的大規(guī)模建設(shè),管網(wǎng)將以前所未有的速度快速增長,使得管網(wǎng)系統(tǒng)日益大型復(fù)雜化,管線的建設(shè)投資和運行費用相應(yīng)增大。如何保證管網(wǎng)系統(tǒng)安全、合理、經(jīng)濟(jì)地運營,成為管道建設(shè)者首要關(guān)注的問題。但在管網(wǎng)的初期建設(shè)和運行維護(hù)過程中,在保證輸量的前提下,如何實現(xiàn)經(jīng)濟(jì)效益的最大化是企業(yè)的終極目標(biāo),因此管道建設(shè)者希望對管道系統(tǒng)的建設(shè)和運行進(jìn)行優(yōu)化研究,從而實現(xiàn)管線系統(tǒng)經(jīng)濟(jì)效益最大化的目的。首先,通過分析天然氣輸氣管線總費用的構(gòu)成,建立了以輸氣管線系統(tǒng)總費用最小為目標(biāo)函數(shù)的優(yōu)化設(shè)計數(shù)學(xué)模型。其次,本文選取目前認(rèn)為較為精確的BWRS狀態(tài)方程計算氣體物性,用連續(xù)性方程和運動方程推導(dǎo)并確定了輸氣管道穩(wěn)定流動的基本方程式,為數(shù)學(xué)模型推導(dǎo)計算提供了基礎(chǔ)理論依據(jù)。充分分析考慮了該函數(shù)的約束條件,包括邊界條件約束、管道強(qiáng)度約束和水力約束等,并對約束條件及邊界條件進(jìn)行處理,建立遺傳算法評價函數(shù)'C,確定算法參數(shù),設(shè)計算法流程圖,利用Visual Basic6.0編寫計算程序。最后,將所建立的輸氣經(jīng)濟(jì)性數(shù)學(xué)模型應(yīng)用于西氣東輸二線東段的干線設(shè)計,通過編寫的程序計算,得到了一組使總費用最小的設(shè)計方案。優(yōu)化結(jié)果表明,模型比較合理的反映出管徑、輸氣壓力和壁厚等參數(shù)對總費用的影響,優(yōu)化設(shè)計得到的壓縮機(jī)布置方案與實際設(shè)計的壓縮機(jī)布置方案誤差較小,可以作為實際壓縮機(jī)站布置的基礎(chǔ)方案,對實際管線的設(shè)計具有一定的指導(dǎo)作用。
[Abstract]:Pipeline is the link between the development and utilization of natural gas. A large amount of natural gas is transported through pipelines to towns and industrial areas far from gas fields. In the past ten years, with the large-scale construction of natural gas pipelines, the pipeline network will grow at an unprecedented speed, which makes the pipeline system become more and more complicated, and the construction investment and operation cost of the pipeline will increase accordingly. How to ensure the safe, reasonable and economical operation of pipe network system has become the primary concern of pipeline builders. However, in the process of initial construction and operation and maintenance of the pipeline network, how to realize the maximum economic benefit is the ultimate goal of the enterprise under the premise of ensuring the transportation quantity. Therefore, the pipeline builders hope to optimize the construction and operation of the pipeline system. Thus, the purpose of maximizing the economic benefit of pipeline system is realized. Firstly, by analyzing the composition of the total cost of natural gas pipeline, a mathematical model of optimal design is established, which takes the minimum total cost of gas pipeline system as the objective function. Secondly, the BWRS equation of state, which is considered to be more accurate at present, is selected to calculate the physical properties of gas, and the basic equations of steady flow of gas pipeline are derived and determined by using the continuity equation and motion equation. It provides basic theoretical basis for mathematical model derivation and calculation. The constraint conditions of the function, including boundary condition, pipeline strength constraint and hydraulic constraint, are fully analyzed, and the constraints and boundary conditions are dealt with. The genetic algorithm evaluation function is established to determine the parameters of the algorithm. The flow chart of algorithm is designed, and the calculation program is written by Visual Basic6.0. Finally, the established mathematical model of gas transmission economy is applied to the design of the trunk line in the east section of West to East Gas Transmission Line. Through the program calculation, a group of design schemes with minimum total cost are obtained. The optimization results show that the model reasonably reflects the influence of the parameters such as pipe diameter, gas pressure and wall thickness on the total cost, and the error between the optimized compressor layout scheme and the actual compressor layout scheme is relatively small. It can be used as the basic scheme of the actual compressor station layout, and has certain guiding function to the actual pipeline design.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE973.1

【參考文獻(xiàn)】

中國期刊全文數(shù)據(jù)庫 前10條

1 唐紅君;吳志均;陸家亮;邵麗艷;孫斌;;中國天然氣資源潛力分析[J];國際石油經(jīng)濟(jì);2011年06期

2 苑偉民;賀三;袁宗明;劉暢;張華麗;;求解BWRS方程中壓縮因子的數(shù)值方法[J];管道技術(shù)與設(shè)備;2009年03期

3 胡道華;羅滔;;陜京二線工程建設(shè)中的土建問題與解決方案[J];油氣儲運;2009年03期

4 蘇欣;章磊;劉佳;張琳;;SPS與TGNET在天然氣管網(wǎng)仿真中應(yīng)用與認(rèn)識[J];天然氣與石油;2009年01期

5 李悅敏;李興泉;趙自軍;王啟;鞠秀峰;任廣如;;遺傳算法在燃?xì)夤芫W(wǎng)優(yōu)化的應(yīng)用進(jìn)展[J];煤氣與熱力;2008年06期

6 李智,謝兆鴻,秦建華;蟻群算法在天然氣輸送管道優(yōu)化設(shè)計中的應(yīng)用[J];天然氣工業(yè);2005年09期

7 吳長春,張鵬,蔣方美;輸氣管道仿真軟件及其在供氣調(diào)峰中的應(yīng)用[J];石油工業(yè)技術(shù)監(jiān)督;2005年05期

8 吳玉國,陳保東;BWRS方程在天然氣物性計算中的應(yīng)用[J];油氣儲運;2003年10期

9 吳長春,張孔明;天然氣的運輸方式及其特點[J];油氣儲運;2003年09期

10 吳玉國,陳保東,郝敏;輸氣管道摩阻公式評價[J];油氣儲運;2003年01期

，

本文編號：1824690