Hydraulic circuit of solid-liquid engine in-situ calibration power source

Abstract

The invention relates to a hydraulic circuit of a solid-liquid engine in-situ calibration power source. The hydraulic circuit comprises an oil tank, an electromotor, a coupler, a plunger pump, an oil return filter, an air cooler, a one-way valve, a safety overflow valve, an in-line filter, an electro-hydraulic proportional overflow valve, a pressure sensor, a manual operator, an electromagnetic valve, a servo actuator and a thrust sensor; the electromotor drives the plunger pump to rotate through the coupler; oil in the oil tank enters the one-way valve via the plunger pump and then is divided into two ways, wherein one way flows back into the oil tank via the safety overflow valve, the air cooler and the oil return filter, and the other way passes through the in-line filter and then is divided into two branches, the branch (1) communicates with the electromagnetic valve and the branch (2) enters the oil tank via the electro-hydraulic proportional overflow valve, the air cooler and the oil return filter; and in a working process of the hydraulic circuit, the effect of continuously regulating thrust force of the servo actuator is realized through regulating the manual operator. The hydraulic circuit has the advantages that the thrust control precision is high, the servo actuator operates stably, the operation is safe and the use is convenient and quick, and a stepless pressure regulation function can be realized.

Description

technical field [0001] The invention relates to a hydraulic circuit for in-situ calibration of a power source for an engine, in particular to a hydraulic circuit for in-situ calibration of a power source for a solid-liquid engine. Background technique [0002] In the development stage of the solid-liquid engine, it is necessary to obtain the thrust-time ballistic performance curve to evaluate the engine performance, but various mechanical frictions, leaf spring damping, and fuel filling pipeline damping inside the test bench are all unknown uncertain factors. The factor uncertainty performance is related to the test bench parameters and the installation state of each test. Therefore, before the engine is officially ignited and tested, the engine thrust should be simulated by an external power source, and the influence of these factors should be eliminated by means of a sensor test system and mathematical methods. The adjustment performance of the external simulated power sou...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hydraulic circuit for in-situ calibration of the power source of the solid-liquid engine to solve the problem of continuously changing the valve opening of the electro-hydraulic proportional relief valve by adjusting the voltage signal output by the potentiometer on the external hand operator. degree, to achieve the problem of stepless pressure regulation

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