一种新型五缸钻井泵的设计

为满足油田特别是海上油田的需要，研制了一种新型往复、容积式、单作用、卧式五缸钻井泵。其动力端壳体采用整体式高强度结构钢焊接结构，曲轴为整体式合金钢锻造并经热处理后加工而成，由六个重型圆柱滚子轴承支承，两圆柱斜齿轮置于曲轴两端，小齿轮与小齿轮轴为分体式．方便加工与组装，十字头与活塞杆采用卡箍连接，缸套采用双金属结构。液力端采用分体式结构，由五个分体泵头体组成，泵阀及其弹簧的技术参数经计算得出，保证其正常开启。应用PROE软件对主要零部件进行了受力分析和强度计算，保证了其使用的可靠性。该五缸钻井泵与同功率三缸钻井泵相比，具有排量大、质量小、体积小和运移方便等特点，而且其排量相对于平均值的变化较三缸钻井泵小，因而减小了泵及管汇的震动，延长了泵的使用寿命。

An Innovative Design for Quintuple Drilling Pump

A novel horizontal, reciprocating, single acting, positive displacement quintuple mud pump has been developed to meet demands for oilfield drilling operations, especially offshore drilling. Its shell in power end is welded with integral high strength steel, and its crankshaft is forged of alloy steel and manufactured after heat treatment. The crankshaft is supported by six heavy-duty rollers, two helical gears on the both sides of crankshaft, split pinions and pinions shaft is easy to fabricate and assembly. Crosshead and piston rods are coupled. The split fluid end is composed of five fluid cylinders, calculated pump valve and springs make it perfectly work. Force analysis and strength check of main components have been carried out with advanced Proengineer ing software to ensure its reliability. Compared with same horsepower triplex pump, the quintuple pump performs advantages of large displacement, lightweight, low profile, easy mobilization, etc. In addition, the average displacement of the quintuple pump is lower than that of triplex pump, which alleviates vibrations of pump and manifolds, and thus increases its service life.