会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Rotational viscometer for high-pressure high-temperature fluids
    • 用于高压高温流体的旋转粘度计
    • US4499753A
    • 1985-02-19
    • US501313
    • 1983-06-06
    • Kenneth R. Carr
    • Kenneth R. Carr
    • G01N11/14
    • G01N11/14
    • The invention is a novel rotational viscometer which is well adapted for use with fluids at high temperatures and/or pressures. In one embodiment, the viscometer includes a substantially non-magnetic tube having a closed end and having an open end in communication with a fluid whose viscosity is to be determined. An annular drive magnet is mounted for rotation about the tube. The tube encompasses and supports a rotatable shaft assembly which carries a rotor, or bob, for insertion in the fluid. Affixed to the shaft are (a) a second magnet which is magnetically coupled to the drive magnet and (b) a third magnet. In a typical operation, the drive magnet is rotated to turn the shaft assembly while the shaft rotor is immersed in the fluid. The viscous drag on the rotor causes the shaft assembly to lag the rotation of the drive magnet by an amount which is a function of the amount of viscous drag. A first magnetic pickup generates a waveform whose phase is a function of the angular position of the drive magnet. A second magnetic pickup generates a waveform whose phase is a function of the angular position of the third magnet. An output is generated indicative of the phase difference between the two waveforms.
    • 本发明是一种新颖的旋转粘度计,其适用于在高温和/或高压下与流体一起使用。 在一个实施例中,粘度计包括具有封闭端并具有与要测定其粘度的流体连通的开口端的基本上非磁性的管。 安装环形驱动磁体以围绕管旋转。 管包围和支撑可旋转的轴组件,其携带用于插入流体中的转子或锤。 固定在轴上的是(a)磁耦合到驱动磁体的第二磁体和(b)第三磁体。 在典型的操作中,当轴转子浸入流体中时,驱动磁体被转动以转动轴组件。 转子上的粘性阻力导致轴组件使驱动磁体的旋转滞后一定量,该量是粘性阻力量的函数。 第一磁性拾取器产生其相位是驱动磁体的角位置的函数的波形。 第二磁拾取器产生其相位是第三磁体的角位置的函数的波形。 产生指示两个波形之间的相位差的输出。