Nonlinear Vibration Feature Recognition Method for Reciprocating Compressor Cylinder Based on VMD-Multifractal Spectrum

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Unit model</td><td class="align_center">4HHE-VG-3-1</td></tr><tr><td class="align_left">Compressor flow</td><td class="align_center">26928 Nm<sup>3</sup>/s</td></tr><tr><td class="align_left">Outlet pressure</td><td class="align_center">17 MPa</td></tr><tr><td class="align_left">Medium</td><td class="align_center">Circulating hydrogen</td></tr><tr><td class="align_left">Outer dead center clearance</td><td class="align_center">28.48 mm</td></tr><tr><td class="align_left">Lubrication form</td><td class="align_center">Oil lubrication</td></tr><tr><td class="align_left">Lubricating oil name:</td><td class="align_center">SHELL S1 B460</td></tr><tr><td class="align_left">Stroke</td><td class="align_center">323.85 mm</td></tr><tr><td class="align_left">Inlet pressure</td><td class="align_center">14 MPa</td></tr><tr><td class="align_left">Piston ring material</td><td class="align_center">Carbon-PTFE</td></tr><tr><td class="align_left">Piston ring interface mode</td><td class="align_center">45° oblique incision</td></tr><tr><td class="align_left">Inner dead center clearance</td><td class="align_center">1.57 mm</td></tr><tr><td class="align_left">Cylinder size</td><td class="align_center">171.4 mm</td></tr><tr><td class="align_left">Motor speed</td><td class="align_center">330 r/min</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Dimensions and parameters of a refinery recovery machine.</div>

Shock and Vibration

tab5

Table 5

Table 5: Nonlinear Vibration Feature Recognition Method for Reciprocating Compressor Cylinder Based on VMD-Multifractal Spectrum 