APPARATUS FOR MEASURING GAPS AT DIFFERENT DEPTH VALUES OF ABRASIVE WEAR Russian patent published in 2004 - IPC

FIELD: measuring technique, possibly measuring gap between upper edges of movable blades of blade rim and inner wall of crankcase, in which turbine blade rim is arranged.

SUBSTANCE: apparatus includes probe that may be mounted in radial direction on crankcase. One end of probe is made of material capable for rubbing from abrasive action of rotating upper edges of blades. In mean plane of probe through which rotation axis of blade rim passes there is printed circuit board. The last has large number of adjacent U-shaped electric circuits whose bases are placed near end of probe capable for rubbing by abrasive action of upper edges of blades. Such electric circuits are arranged at different depth levels relative to reference level determining inner wall of crankcase.

EFFECT: simplified reliable low-cost apparatus for measuring gaps at different depth levels.

6 cl, 4 dwg