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    • 11. 发明申请
    • CORIOLIS MASS FLOW SENSOR WITH HELICAL MEASUREMENT TUBE
    • 带有螺旋流管的科里奥利质量流量传感器
    • WO1995007445A1
    • 1995-03-16
    • PCT/EP1994002953
    • 1994-09-05
    • ENDRESS + HAUSER FLOWTEC AG
    • ENDRESS + HAUSER FLOWTEC AGKOUDAL, OleWENGER, Alfred
    • G01F01/84
    • G01F1/8409G01F1/8418G01F1/8468
    • A mass flow sensor based on the Coriolis principle has a single helical measurement tube (13) that may be mounted for example by means of flanges (11, 12) in the path of a pipe having a given diameter (DN) through which the fluid to be measured flows and has largely balanced vibration modes independent from the density of the fluid, while maintaining its self-emptying capability in at least one mounting position. The vibrating part (13') of the measurement tube (13) is shaped as a circular cylindrical helix with a constant pitch and at least one winding. The corresponding end of an outer supporting tube (15) is secured to the measurement tube (13) next to the corresponding flange (11, 12) or to the corresponding flange itself. Only the corresponding end of an inner supporting element (14) is secured to the measurement tube (13) next to the corresponding flange (11, 12). Joining elements (16) that join the vibrating part (13') to the supporting element (14) are distributed along the vibrating part (13') and allow only those modes of vibration of the vibrating part (13') in which its centre line remains on the rest position cylindrical enveloping surface. Means are provided to excite the vibrating part (13') into resonant vibrations perpendicular to its centre line.
    • 建立科里奥利原理质量流量传感器具有在一通过其的过程中单个螺旋测量管(13)中流动的被测定流体的给定直径的导管(DN)例如 通过凸缘的装置(11,12)可插入并保持自排水已在至少一个安装位置时,它提供的是在测量管(13)的振动部(13“)具有一个圆柱形的形状,而在很大程度上无论平衡流体振荡模式的密度的 螺杆恒定节距至少一匝已经,即在相应的法兰(11,12)的附近的测量管(13)的外部支撑管(15)的相应端部或上的相应凸缘本身固定的,使得只有一个内的相应端部 在相应的凸缘(11,12)的附近承载元件(14)被固定在沿该部分的振动部分(13“)和所述支承元件(14)相互连接的连接元件(16)分布在所述测量管(13),所述 只允许所有在其中心线到它们的静止缸内护套包络POSS的位置处的振动部(13“)的那些模式 ichst仍然存在,并且提供的装置,其激励所述振动部(13“)共振垂直于其中心线的振动。
    • 18. 发明公开
    • VORRICHTUNG ZUR BESTIMMUNG UND/ODER ÜBERWACHUNG DES MASSEDURCHFLUSSES EINES FLUIDEN MEDIUMS
    • VORRICHTUNG ZUR BESTIMMUNG UND / ODERÜBERWACHUNGDES MASSEDURCHFLUSSES EINES FLUIDEN MEDIUMS
    • EP1955021A2
    • 2008-08-13
    • EP06830250.4
    • 2006-11-30
    • Endress+Hauser Flowtec AG
    • KOUDAL, OlePOPP, OliverGIMSON, ChrisKHAN, MohammedBAILEY, JonathanLLOYD, GaryMOTTERSHEAD, NeilKARBULA, Jiri
    • G01F1/696
    • G01F1/6965G01F1/6986G01F1/699
    • The invention relates to a thermal measurement device for determining and/or monitoring the mass flow of a fluid medium (3) through a pipeline (2) or through a measurement tube, comprising at least two temperature sensors (11, 12) and a regulation/analytical unit (10), both temperature sensors (11, 12) being resistance elements of which one is of a design which may be heated, both temperature sensors (11, 12) are arranged In a region of a housing (5) facing the medium (3) and are in thermal contact with the medium (3) flowing through the pipeline (2) or measuring tube. The regulation/analytical unit is provided with two differing precision resistances (R1, R2), the first precision resistance (R1) having a first defined value (Y1) and the second precision resistance (R2) having a second defined value (Y2), wherein the regulation /analytical unit (10) assigns a measured resistance (Rx1; Rx2) determined on a resistance element (11, 12) a measurement value (Y1; Y2) lying on a straight line (g) running through two calibration points ((R1, Y1), (R2, Y2)) provided by two precision resistances (R1,R2) and the regulation /analytical unit (10) determines the mass flow through the pipeline (2) or the measuring tube from the measured values (Y1,Y2) provided by the temperature sensors (11, 12).
    • 本发明涉及一种用于通过管线(2)或通过测量管确定和/或监测流体介质(3)的质量流量的热测量装置,包括至少两个温度传感器(11,12)和调节 /分析单元(10),两个温度传感器(11,12)是电阻元件,其中一个是可以被加热的设计,两个温度传感器(11,12)都布置在壳体(5)的面向 介质(3)并与流过管道(2)或测量管的介质(3)热接触。 调节/分析单元具有两个不同的精密电阻(R1,R2),第一精密电阻(R1)具有第一限定值(Y1)和具有第二限定值(Y2)的第二精密电阻(R2) 其中所述调节/分析单元(10)分配在电阻元件(11,12)上确定的测量电阻(Rx1; Rx2),所述测量电阻(Y1,Y2)位于通过两个校准点的直线(g)上 由两个精密电阻(R1,R2)和调节/分析单元(10)提供的(R1,Y1),(R2,Y2))根据测量值确定通过管道(2)或测量管的质量流量 Y1,Y2),由温度传感器(11,12)提供。