Gear Train Design Of High-Power Drilling Reciprocating Pump

As the core power of oil drilling reciprocating pump, pump’s performance and service life are directly affected by the performance of gear train. Because of rising oil consumption, the increasingly serious contradiction between supply and demand of oil leads to oil drilling from shallow wells to deep well or even ultra deep well. High-power drilling reciprocating pump is the key equipment for deep well drilling. High-power gear train has become an important research content of reciprocating pump.In this paper, the reciprocating pump gear train was designed in line with the principle that crankshaft’s maximum torque value as lower as possible. As we know that the torque’s destruction to crankshaft is bigger than bending moment. So the gear train scheme was chosed on the condition that maximum torque value as lower as possible, then choose the suitable scheme for high-power train of reciprocating pump.In this paper, module of the oil drilling reciprocating pump gear train was selected on the theory of gear tooth surface contact strength and tooth root bending strength, and then get the needed module. Thus tooth width、 addendum circle diameter helix angle, etc of big gear ring and gear shaft were calculated. Wall thickness of the big gear ring was concluded indirectly through the required size between the ring gear and the crankshaft joint bolt diameter. Gear shaft’s force was calculated, and it strength and rigidity also be checked.In this paper, gear train was developed to CAD system. A set of efficient and practical drilling reciprocating pump gear train design software was developed. Program block diagram was compiled sciencally. The charts required in the design process was effectively processed. Parts were realized parametric drawing.In this paper, ANSYS analysis software was used. Gear shaft’s structural static and modal were analyzed. Software analysis result was compared with the theoretical calculation results, further verified the correctness of the theoretical calculation result.