Vibration analysis of triplex pump installed on the fracturing truck based on ADAMS

 

MA Xiao-wei, LIU Jian, SUN Yan-di, LIU Zhong-yan, XIAO Liu-sheng

(College of Machinery and Electronic Engineering, China University of Petroleum, Qingdao 266580, China)

 

Abstract: Aiming at the problem that the excitation loaded on the frame caused by the triplex pump when the fracturing truck operates was unclear, special studies on the vibration characteristics of the triplex pump was carried out. Firstly, the 3D solid model of the triplex pump was set up by the modeling software Pro/E, and then rigid multibody dynamics software ADAMS was imported and a virtual prototype model was built up. Excitation sources were considered comprehensively slvely, such as inertial forces caused by multigear operation of the triplex pump and pressure surges on the fluid end, and relevant joint conditions, constraint conditions, driving and excitation conditions were added. In this way, the stimulate horizontal excitation that frame made on triplex pump when the fracturing truck worked was gained, which also could be proven by virtual prototype test and field test. The result indicated that the excitation applied on the frame by the triplex pump mainly was low frequency(LF) excitation. The peak value 2.3×106N appeared at 5.3Hz. The simulation results can faithfully reflect the excitation values when the fracturing truck worked under actual conditions, providing theory basis on the design of vibration isolation scheme of the triplex pump of the fracturing truck.

Key words: fracturing truck; triplex pump; dynamics simulation; multi excitation source