Method and device for determining thickness of bearing oil film of piston shoe of plunger pump

Abstract

The invention provides a plunger pump sliding shoe bearing oil film thickness determination method and device, and relates to the field of plunger pump sliding shoe lubrication.The method comprises the steps that for computational fluid mechanics models of bearing oil films with different thicknesses, computational fluid mechanics simulation is conducted according to multiple preset oil film inlet pressure intensities, and simulation data are obtained; the simulation data comprises oil film supporting forces corresponding to a plurality of oil film inlet pressures; and obtaining the oil film thickness of the target sliding shoe according to the oil film inlet pressure intensity and the oil film supporting force of the target sliding shoe and the simulation data of the bearing oil films with different thicknesses. According to the method, the thickness of the oil film borne by the piston shoe of the plunger pump can be determined more efficiently and conveniently, so that the abnormal wear condition of the designed plunger pump is reduced while the design cost of the plunger pump is saved.

Description

technical field [0001] The invention relates to the field of plunger pump sliding shoe lubrication, in particular to a method and a device for determining the thickness of an oil film carried by a plunger pump sliding shoe. Background technique [0002] In the plunger pump, the abnormal wear of the sliding shoe is a common fault, so it is necessary to effectively monitor the operating conditions of the sliding shoe of the plunger pump to optimize the design of the plunger pump. In the plunger pump, the bearing oil film of the sliding shoe acts as a lubricant, which can reduce the wear of the sliding shoe. Therefore, it is necessary to determine the thickness of the bearing oil film of the sliding shoe. By monitoring the thickness of the bearing oil film of the sliding shoe, it can better guide the The design of the plunger pump, so that the optimized design of the plunger pump has less abnormal wear and better operating conditions. In the prior art, there are mainly pure th...

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Problems solved by technology

However, the pure theoretical analysis method needs to be improved in determining the accuracy of the oil film thickness. Although the determination method based on the test bench is the mainstream method, the test bench environment has higher requirements for equipment, which leads to higher costs and The determination method based on the test bench takes a long time and is difficult to determine, and there is still room for improvement in efficiency

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