Study On The Application Of Double-Face Distribution Forced Cooling Principle In Through Shaft Pump

The noise and temperature rise of hydraulic pumps have always been hot and difficult problems in this field.Solving the noise problem can improve the working environment of practitioners;Solving the temperature rise problem can extend the service life of the pump.After doing a lot of related research,experts and scholars at home and abroad have achieved fruitful research results in the noise reduction and cooling of pumps.However,these researches are basically carried out without changing the original flow distribution principle of the pump.With the continuous development of the hydraulic field to the direction of high pressure,high speed and high power,the noise and temperature rise problems will inevitably become a barrier to the application of hydraulic pump.Starting from the principle of forced cooling of double-ended distribution flow proposed by the team,this paper mainly studies the thermodynamic properties and cavitation phenomenon of the improved through-shaft pump by applying the principle of double-ended distribution forced cooling through theoretical derivation and simulation,and verifies through experiments that the principle of double-ended distribution forced cooling has a good cooling and noise reduction effect on the through-shaft pump.The main research contents of this paper are as follows:(1)The principle of forced cooling of double-ended distribution flow is introduced in detail,and the oil flow state inside the two through-shaft pumps is intuitively reflected by using the liquid flow diagram,and the difference in the working principle of the two pumps is analyzed on this basis.Under the guidance of the principle of forced cooling of doubleend distribution,the corresponding improvement design of the parts in the pump was completed,and the three-dimensional model of the pump was established by using Creo.(2)The causes of cavitation phenomenon of thru-shaft pump are analyzed,and the principle of the difference between cavitation phenomena of the two types of through-shaft pump is theoretically analyzed.At the same time,the differential equation of pressure in the single plunger cavity is derived.(3)The overall temperature rise of the two types of thru-shaft pumps was compared in detail by macroscopic method,and a mathematical model of the leakage temperature rise of the friction pair of the thru-shaft pump was established.(4)Through the simulation software Pump Linx,the overall cavitation of the two types of through-shaft pumps was simulated and studied,and the thermodynamic models of the two through-shaft pumps were built by AMESim,and the temperature rise curves of the two through-shaft pumps were simulated,and the thermal deformation analysis of the parts in the relative movement of the through-shaft pump was carried out by Workbench,and the deformation of the parts under different oil storage chamber temperatures was compared;(5)Build a test platform to test the temperature rise and noise of the improved front and rear thru-shaft pumps to verify the cooling and noise reduction effects of the new pump.