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为满足油田高压注水的需要,上海大隆机器厂和辽河石油勘探局开发了一种增压注水泵。这种型号为12ZZ的注水泵采用的是平衡柱塞(差动柱塞),平衡的液压力由出口压力引入,平衡回程柱塞的推力,从而确保润
To meet the needs of high pressure water injection in oilfields, Shanghai Dalong Machine Factory and Liaohe Petroleum Exploration Bureau have developed a pressurized water injection pump. This type of 12ZZ water injection pump uses a balanced plunger (differential plunger). The balanced hydraulic pressure is introduced by the outlet pressure to balance the thrust of the return plunger to ensure a constant