Testing system and testing method for characteristics of plunger pump

Abstract

The invention discloses a testing system and a testing method for characteristics of a plunger pump. The testing system is characterized in that a torque and rotating speed tester is installed on an output shaft of a driving motor and used for detecting the input torque and the angular speed of the plunger pump; a two way cartridge valve is installed in an outlet pipeline of the plunger pump, a pressure sensor is installed on a connection pipeline between the oil inlet of the two way cartridge valve and the outlet end of the plunger pump, the pressure sensor is used for detecting output pressure of the plunger pump, and a flow sensor is installed at the oil outlet of the two way cartridge valve and used for detecting output flow of the plunger pump; a throttling port is installed in a connection pipeline between the control port of the two way cartridge valve and the oil inlet of the two way cartridge valve; a pilot-operated proportional overflow valve and a normally closed type two-position two-way electromagnetic directional valve are installed between the control port of the two way cartridge valve and the oil inlet of the flow sensor in parallel; the pilot-operated proportional overflow valve is used for setting output pressure of the testing system. By means of the testing system and the testing method, testing of the pressure and overall efficiency characteristics of the plunger pump can be achieved rapidly and accurately.

Description

technical field [0001] The invention relates to a test system and a test method, in particular to a plunger pump characteristic test system and test method. Background technique [0002] With the development of hydraulic technology, plunger pumps are more and more widely used in construction machinery. Its function is to convert the mechanical energy of the prime mover into the hydraulic energy of the working oil, and provide the hydraulic system with a certain pressure and flow of working fluid. The structure of the parts that make up the sealed volume of the hydraulic pump is not the same, and the flow distribution mechanism also has various forms, but the working principle is similar in essence, and they all belong to the positive displacement hydraulic pump. There is a power loss in the working process of the hydraulic pump, and its efficiency is not only affected by its own structure, manufacturing quality and working conditions, but also depends to a large extent on t...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a plunger pump characteristic testing system and testing method, which uses the research results of the loss mechanism of the plunger pump, overcomes the shortcomings of heavy workload and poor reliability in the pressure-efficiency performance testing process of the plunger pump, Simplifies the testing process and ensures the accuracy of test results

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