关键词: 泥浆泵, 液力传动, 变矩器, 正常工作条件, 最高效率点, 压力降, 工况曲线, 工作情况, 设计工况, 额定功率

Abstract: Based on the infinite variations of pressure and displacement of mud pumps driven through torque converters and using the basic formulas for hydraulic combutations for jit drilling,this paper proposes a graphic method of describing the operating condition of mud pumps.Taking the example of a 4,500m rig,and drawing a number of charts of the working conditions of its pump at different input Hp,with different driving arrangments,the author finds that in proper jit drilling,for a converter working at maximum efficiency,the input Hp of the pump should be 88% of its rating and the average strokes 94% of its rating.