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胜利油田孤岛采油厂的两台美国进口 ＤＩ－２５－ＳＧ／ＮＤ—２６００型活动式高压湿蒸汽发生器，用于边远井的热采注汽，是三次采油的重要设备。近年来，由于稠油井热采工作量不断加大，发生器搬迁频繁，每次搬迁均需升降拖盘，其升降机构为手摇扇形齿带动螺旋起落，存在以下
Two imported DI-25-SG / ND-2600 movable high-pressure wet steam generators from the Shengli Oilfield Gudao Oil Production Plant are used for thermal recovery injection of outlying wells. They are important equipment for tertiary recovery. In recent years, heavy oil wells due to the increasing workload of thermal recovery, the generator frequent relocation, each lifting need to lift the tray, the lifting mechanism for hand-driven fan-shaped helical gear spiral landing, the following