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    • 6. 发明申请
    • THERMAL PULSE FLOW METER
    • 热脉冲流量计
    • WO2013075111A1
    • 2013-05-23
    • PCT/US2012/065878
    • 2012-11-19
    • UTAH STATE UNIVERSITYBATTY, J. ClairRUSCH, BlakeBELL, David
    • BATTY, J. ClairRUSCH, BlakeBELL, David
    • G01F1/68G01F1/684G01F1/696
    • G01F1/692G01F1/684G01F1/6847
    • An apparatus and method are disclosed for using a thermally active device as a flow meter. The flow meter may have an extremely low mass, rapid response time, and use minimal energy. The flow meter may be located near a flow-side surface of a conduit wall, flush with the surface of a wall, or within a boundary layer of a flow in a conduit. In these locations, the device may present virtually no obstruction to the flow. In certain embodiments, the device may use a resistance temperature device (RTD) heated by a known current, and then tested for resistance at a comparatively much lower (nominally zero) value. A flow rate may be calculated as a function of temperature measurements taken at different steady-state conditions. Flow rates may be so measured at any desired frequency, including very infrequently, such as seconds, minutes, or days apart.
    • 公开了一种使用热活性装置作为流量计的装置和方法。 流量计可能具有非常低的质量,快速的响应时间,并且使用最少的能量。 流量计可以位于导管壁的流动侧表面附近,与壁的表面齐平,或在管道中的流动的边界层内。 在这些位置中,该装置几乎不会对流动产生阻碍。 在某些实施例中,该装置可以使用由已知电流加热的电阻温度装置(RTD),然后以相当低的(标称为零)值测试电阻。 可以根据在不同稳态条件下进行的温度测量来计算流量。 流量可以以任何期望的频率被测量,包括很少的频率,例如秒,分钟或天数。