METHOD FOR PARAMETRIC GENERATION OF PRESSURE PULSES BY LIQUID AND GAS ENERGY CARRIER WITH SEPARATE CONTROL OF SHUT-OFF ELEMENTS OF A HYDRAULIC PULSE DRIVE

This paper presents a novel method for parametric pressure-pulse generation in hydro-impulsive drives, replacing the traditional area-based parametric control with independent force-based control of two sealing elements. Unlike the classical approach proposed by Matveev, which is constrained by fixed geometric area ratios, our method uses individual springs and adjustment mechanisms to independently control the sealing elements. This approach enables precise regulation of the pressure pulse shape, including the formation of stable pressure plateaus and controlled pulse fronts, which is crucial for optimizing vibro-impact technological processes. A dynamic mathematical model, considering the hydraulic link as a Kelvin-Voigt body, is developed to describe the system’s transition from an initial start-up pulse to a stable auto-oscillatory regime. Simulation results demonstrate that the proposed single-stage generator maintains high stability and performance over the 1–200 Hz frequency range at pressures up to 16 MPa, offering a more reliable and cost-effective alternative to complex multi-stage designs.

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