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前言现代化的长距离输油管道都采用密闭输送,也即“从泵到泵”输送方式。密闭输送的优点很多,主要有:(一)减少中间站的油气蒸发损耗;(二)充分利用泵站余压,减少能耗;(三)简化中间站流程,减少基建投资;(四)便于全管道集中控制与调节。无疑,密闭输送也应是我国长距离输油管道的发展与改造方向。密闭输送管道全线由若千个泵站构成一个水力系统。因此,任何一个泵站或某一管
Preface The modern long-distance oil pipeline adopts closed conveying, that is, “from pump to pump” conveying mode. There are many advantages of hermetically sealed transportation, mainly including: (1) reducing evaporation losses of oil and gas at intermediate stations; (2) making full use of residual pressure at pumping stations to reduce energy consumption; (III) simplifying the flow of intermediate stations and reducing capital investment; (4) The whole pipeline centralized control and regulation. Undoubtedly, the closed transportation should also be the direction of the development and renovation of long-distance oil pipelines in our country. Sealed pipeline across the board by a number of pumping stations to form a hydraulic system. Therefore, any one pumping station or some tube