Physical and Chemical Geotechnologies

Purpose

Improvement of the structure, definition of rational parameters of the transient devices of the hydraulic pulse system (HPS) and evaluation of the efficiency of the use of repulsive clusters (RC) for vibration protection of base machines

Methodology

Experimental studies and mathematical modeling of the oscillation process by finite-difference method investigated the energy processes in the cycle of HPS work and justified characteristics of the RC, providing a powerful protection for the base mining machine.

Findings

Experimental research on a special stand using the substance of the LCD as a "hydrophobised silica gel"(“Symetry C8/ Waters) with a highly developed internal surface + water as a working fluid "in a special container (50x23x8) mm, which has undergone degassing with the removal of a mixture of air with the process fluid in the cartridge of the cartridge AMG-40 mineral oil, the working hysteresis characteristic of the dissipator dissipating energy is established about 93%, which is typical for low-frequency oscillations and tests with pulsed loads - about 90%.

The mathematical modeling by the finite difference method confirmed the damping of oscillations with a decrement of 1.8-1.95 in the transient device with RC. The developed hydraulic multiplier with RC, based on hydrophobic silica gel, tested in a real hydraulic drive and recommended for the introduction in the designs of hydropulse systems of mining machines.

The research is carried out according to the budget theme: "Energy technology complex with intelligent control of working mode and vibration protection using reculsion clathrates" (NoДР 0115U002332),

Keywords: oscillation, hysteresis characteristic, system, implantation , impulse system

References

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