ULTRASONIC PIEZOELECTRIC TRANSDUCER FOR CHANGE OF FLOW SPEED AND DISCHARGE OF LIQUID AND GASEOUS MEDIUMS (VERSIONS),申请号RU20070136324-传众专利搜索

ULTRASONIC PIEZOELECTRIC TRANSDUCER FOR CHANGE OF FLOW SPEED AND DISCHARGE OF LIQUID AND GASEOUS MEDIUMS (VERSIONS)

申请公布号：RU2364839(C2)

申请号：RU20070136324

申请日期：2007.10.01

申请公布日期：2009.08.20

申请人：

ZAO "KOGERENT"

发明人：ADON'EV VLADIMIR GRIGOR'EVICH;MOSIN SERGEJ TIMOFEEVICH;SVIL'POV DMITRIJ JUR'EVICH

分类号：G01F1/66;G01N29/32

主分类号：G01F1/66

摘要：FIELD: physics, measurements. ^ SUBSTANCE: invention may be used in devices for measurement of speed and discharge, and also in devices for definition of liquid and gaseous mediums density and their composition. Ultrasonic transducer comprises body with piezoelectric cell installed in it and joined via transition layers to damper and membrane. In one version external surface of flat membrane loaded by measured medium is beveled at the angle of 1 ëñ < 2. Angles 1 and 2 are defined by given mathematical formula that includes ratio of ultrasound speeds in measured medium and membrane material. In other version membrane has the shape of cone or polyhedral pyramid with top inverted to measured medium. Angle of cone and angle of cone inserted into polyhedral pyramid is =180-2. Membrane and body of transducer may be made of similar or different materials. ^ EFFECT: provides for higher accuracy of measurements due to lowering of level of reverberation signals and lower distortion of useful signal. ^ 4 cl, 6 dwg