DEVICE FOR MEASUREMENT OF AXIAL FORCE OF TURBINE MACHINE ROTOR Russian patent published in 2016 - IPC G01L1/22 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used for detection of loads, specifically axial force of rotating parts, such as shafts or trunnions of turbomachine. Proposed device for measurement of axial force of turbomachine rotor comprises a ball bearing, inner ring of which is installed on shaft, and outer ring in housing, as well as installed in housing flat elastic ring, on end surfaces of which there are support sites of protrusions, between which are installed strain sensors and an additional flexible ring with strain gauges, wherein it comprises two circular elements in contact with each other along conical relative to longitudinal axis of shaft end surfaces which form a truncated cone, larger base of which is located on side of ball bearing, wherein said circular elements are installed between adjacent ends of flat elastic ring and external ring of ball bearing, wherein circular element, which contacts directly with flat elastic ring is split, and other circular element is installed directly in housing, wherein additional elastic ring is made with stiffness coefficient lower than that of flat elastic rings, and is installed between inner surface of housing and outer surface of split ring element, and in axial direction additional flexible ring is confined by end of flat elastic rings and radial face made on inner surface of housing, on inner and outer surfaces of additional resilient rings there are support sites of protrusions, between said strain gauges, wherein flat elastic ring, additional flexible ring, two circular elements are fixed in housing in axial direction, and outer ring of ball bearing is fixed in housing from turning.

EFFECT: technical result is a wider range of measurement of axial force of turbine machine rotor, as well as reduced time and costs for finishing of turbomachine.

1 cl, 1 dwg