Profiling the Discharge Channel Flow Part of Axial Piston Pump

The article considers the flow of the working fluid in the discharge channel of the axial piston pump with end distribution. Geometric region shapes of the channels, currently used in axial piston pumps, negatively affecting the dynamic parameters of the flow flowing through it, are determined by numerical simulation. The configuration of the channel cavity allowing a more uniform distribution of dynamic parameters over the volume of the fluid flow is proposed. The optimal ratio between the reference dimensions adopted for constructing a three-dimensional model of the channel was determined based on the study of the dependence of the power factor value, the amount of movement in the output section vs the shape of the channel. Energy loss due to flowing the working fluid through the channel is reduced. The resulting force effect on the discharge pipe and other elements connected to the pump is reduced and the vibroacoustic characteristics of the pump unit are improved

References

[1] Prokof’yev V.N., ed. Osnovy teorii i konstruirovaniya gidroperedach [Fundamentals of hydraulic drive theory and engineering]. Moscow, Vysshaya shkola Publ., 1968.

[2] Prokof’yev V.N. Aksial’no-porshnevoy reguliruemyy gidroprivod. Moscow, Mashinostroenie Publ., 1969.

[3] Borisov B.P. Ob"emnye gidromashiny [Positive-displacement hydraulic machines]. Moscow, BMSTU Publ., 2018.

[4] Nikitin O.F. Gidravlika i gidropnevmoprivod [Hydraulics and hydraulic drive]. Moscow, BMSTU Publ., 2012.

[5] Chaburko P.S., Lomakin V.O., Kuleshova M.S., et al. Complex wet end part optimization of hermetic pump with LP-TAU method. Nasosy. Turbiny. Sistemy [Pumps. Turbines. Systems], 2016, no. 1, pp. 55--56 (in Russ.).

[6] Rodionov L.V. The modeling of the external gear pump hydrodynamics. Izvestiya Samarskogo nauch. tsentra RAN [Izvestia RAS SamSC], 2017, no. 4, pp. 15--21 (in Russ.).

[7] Gimadiev A.G., Kryuchkov A.N., Len’shin V.V., et al. Snizhenie vibroakusticheskikh nagruzok v gidromekhanicheskikh sistemakh. Samara, SGAU, 1998 (in Russ.).

[8] Nikitin O.F. Effect of throttle output pressure on discharge coefficients. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mechan. Eng.], 2018, no. 6, pp. 125--138 (in Russ.).DOI: 10.18698/0236-3941-2018-6-125-138

[9] Prudnikov S.N., Shadrin V.S. Torque characteristics of check valves in inclined pipelines. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [Proceedings of Higher Educational Institutions. Маchine Building], 2016, no. 11, pp. 57--63 (in Russ.). DOI: 10.18698/0536-1044-2016-11-57-63

[10] Salutagi Sh., Creswick M., Yuan Q.H., et al. Axial piston pump performance prediction using 3D CFD simulation. FPIRC15, 2015. Available at: https://nfpahub.com/events/wp-content/uploads/sites/2/2015/09/6.4.Yuan_.Q_Axial_Piston_Pump_Performance_Prediction_using_3D_CFD_Simulation.pdf (accessed: 15.05.2019).

[11] Sveshnikov V.K. Additive technology stepped in hydraulics. Additivnye tekhnologii [Additive Technologies], 2017, no. 4, pp. 49--51 (in Russ.).