From the mechanism and the reason of wear and tear,the phenomenon of burning plate and block occured in axial plunger piston pump with large flow and high performance widely used for engineering mechanics have been discussed, and the main reason of wear and tear caused by contamination grains in oil instead of flow divider is put forward.
This paper analyzes on the reasons of the vibration of the hydraulic system from aspects of the linkage and transmission of the mechanical part of h ydraulic system and the aspects of the plunger piston number and working structu re of axial plunger pump, and puts forward some corresponding methods and measur es for effectively reduce the vibration of hydraulic system.
Under total working conditions, the output pressure of the system is higher than that of the plunger pump driven by traditional internal combustion engine by 15.21%76.61%, the output flow rate is lower by (0.69)%2.13%, and the output water power increases by 13.63%74.75%.
The equations of one-dimensional (with a plane of symmetry) adiabatic motion of an ideal gas are transformed to a form convenient for studying flows between a moving piston and a shock wave of variable intensity.
This solution contains four arbitrary constants and, in a particular case, gives an example of adiabatic shockless compression by a piston of a gas initially at rest.
The gas motion is bounded, on the one hand, by a piston moving in accordance with an arbitrary law, and, on the other hand, by either a compression shock or a rarefaction wave propagating through the gas with given arbitrary parameters.
The calculation results indicated that the IHTC immediately increased after liquid metal was brought into the cavity by the plunger and decreased as the solidification process of the liquid metal proceeded.
An approximate solution of the axially symmetric problem of the flow of a viscous incompressible fluid in the vicinity of the point of contact between a uniformly moving plunger and a channel wall is obtained.
A program developed for the control of the plunger positions provides the required magnitude and phase of the reflection coefficient at the tuner input.
It needs three dual-port random-access memory (RAM) to store the temporary results and transpose the matrix, then builds up a pipeline model composed of the three 1-D DWTs.