输气管道毕业论文.docVIP

PAGE  毕业设计（论文） *****天然气 长输管道工程设计 学生姓名： 学 号： 专业班级： 指导教师： 年 月 日 摘要 万安—营泉天然气长输管道是中海油的输气干线，计划分期建设。工程包括自某气田净化厂的输气首站至末站全线的管道线路工程、各分输站场及末站工程、输气基地工程、管道穿越工程以及与之相配套的自控、通信、电力、消防、防腐及阴极保护、给排水的等公用系统工程。 本次工程管线全长880km，设计压力8MPa，管材选取X70，全线采用变壁厚、等强度设计。本工程设首战1座，分输站2座，压气站5座，，1#分输站与第4压气站合并，2#分输站与第5压气站合并，共设截断阀室42座，预留分输阀室10座。管线末段设计长度236km，选取管径660mm, 输气能力相当于日输气量通过能力的16.25%。 全线设计依照经济性最优原则选取参数，本设计中全线管段采用660mm管径管材，按照地区等级要求管道壁厚依次取：一级地区8mm，二级地区10mm，三级地区11mm，四级地区14mm。管道投产阶段不需设压气站，全线凭首站压力即可完成输送，只有在二期满输的时候才开始建设压气站。 全线采用以计算机控制系统为核心的监视控制和数据采集（SCADA）系统，全线的运行操作由调度中心完成。一期输量10×108m3/a，二期为20×108m3/a。投产启输量为5×108m3/a。 关键词：天然气、长输管道、储气量、设计压力、分输站 Abstract Wan’an - Yingquan is a long distance gas pipeline project in CNOOCs gas transmission lines, phased construction plan. Works include a gas purification plant from the first station to terminal station gas transmission pipe line projects across the board, the sub-transmission station and end station project, gas based projects, pipeline crossing project and the related supporting self-control, communications, power , fire, corrosion and cathodic protection, water supply and drainage of the other public systems engineering. The project pipeline full 880km, the design pressure of 8MPa, pipe select X70, full line of variable thickness, such as strength design. The project set up the first battle one, sub-transmission stations 2, Compressor Station 5, 1# sub-transmission stations and 4 compressor stations combined, 2 # minutes transmission stations and 5compressor stations combined, a total cut-off valve chamber 42, valve chambers set aside 10. The last paragraph of the length of pipeline design 236km, select the diameter of 660mm, gas transmission capacity equivalent to capacity on gas transport capacity of 16.25%. Full range of design in accordance with the principle of selecting the optimal economic parameters, the design of all pipes with 660mm diameter pipe, pipe wall thickness requirements in accordance with regional rating in turn