Method and test device for simulating piston shoe pair friction under high-speed and high-pressure working conditions of plunger pump

Abstract

The invention provides a method and a test device for simulating piston shoe pair friction of a plunger pump under high-speed and high-pressure working conditions, and the test device comprises an oil supply pump station, a fixed damper, a lower clamp, a disc spring, a floating disc, a lower test piece, an upper test piece, an oil box assembly, a vibration sensor, a torque sensor, an eddy current displacement sensor, and a friction wear testing machine. The test method can directly test lubrication and friction characteristic information of the sliding shoe pair, and has excellent testability, and the test result is accurate and stable. The test bed utilizes a constant pressure oil source type static pressure bearing theory to construct a static pressure lubricating environment of the sliding shoe pair, and utilizes the curved surface design of the disc spring and the surface of the upper test piece to directly simulate the friction state of the sliding shoe pair under the alternating residual pressing force.

Description

technical field [0001] The invention relates to the technical field of a hydraulic system, in particular to a method and a test device for simulating the friction of a pair of sliding shoes under high-speed and high-pressure working conditions of a plunger pump. Background technique [0002] At present, the plunger pump is more and more widely used and occupies an increasingly important position. The three major friction pairs—the plunger pair, the flow distribution pair and the slipper pair are the key links that affect the performance of the plunger pump. Among them, the most likely The wear failure is the sliding shoe pair, and its performance has a great impact on the service life of the plunger pump. Therefore, it is particularly important to analyze the tribological characteristics of the sliding shoe pair of the plunger pump under high-speed and high-pressure conditions. [0003] However, due to the closedness of the hydraulic pump and the complexity of the motion mec...

AI Technical Summary

Problems solved by technology

[0003] However, due to the closedness of the hydraulic pump and the complexity of the motion mechanism of the shoe pair, it is extremely difficult to simulate and test the friction conditions of the shoe pair

At present, there is no experimental device in the world that can analyze the actual force of the sliding shoe pair under the high-speed and high-pressure working conditions of the plunger pump.

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