TUNABLE WAVEGUIDE-DIELECTRIC CHAMBER FOR CONTROLLING LIQUIDS Russian patent published in 2017 - IPC G01N22/04 

FIELD: microwave equipment.

SUBSTANCE: invention relates to microwave engineering and can be used for measuring and controlling liquids, in particular, aqueous solutions and suspensions of chemical and biological nature substances, in different processes, researches of aqueous solutions structures, determining moisture content of hydrocarbons, including the "crank out" one, as well as in biophysical researches. Design of a resonance measuring chamber provides reliable and stable mechanical tuning and selection of optimal communication of the resonator with the waveguide. Tunable waveguide-dielectric chamber for controlling liquids comprises a waveguide chamber, in the wide walls of which there are cavities to accommodate pistons with holes for passing a dielectric tube with the analyzed substance and devices for moving the pistons, herewith the devices for moving each piston are made in the form of differential adjusting screws, on the pistons surfaces there are throttling grooves, in which there are fluoroplastic washers, and to fix the pistons positions the waveguide chamber cavities accommodate helical springs. On posts of the waveguide chamber attachment fittings there can be a scale of the throttle pistons displacement inside the resonator in order to facilitate rotation by hand, as well as for possible connection with the step motor reducer in automation of the measurement process, the differential adjustment screws are equipped with gear wheels.

EFFECT: reduced shape distortion of resonance curve of the reflected microwave signal due to improved contact of the controlled liquid placed in a dielectric capillary with a waveguide meter, as well as higher stability of the controlled liquid dielectric parameters measurement results, all are the technical result of the invention.

3 cl, 1 dwg