公开(公告)号：USRE35639E

公开(公告)日：1997-10-21

申请号：US420254

申请日：1995-04-11

申请人： William H. Vander Heyden ,  William H. Clingman, Jr., deceased

发明人： William H. Vander Heyden ,  William H. Clingman, Jr., deceased

IPC分类号： G01F1/10 ,  G01F1/86 ,  G01F1/90 ,  G01F15/02 ,  G01F15/04 ,  G01N33/22 ,  G01N25/22 ,  G01F1/00 ,  G01F9/00

CPC分类号： G01F15/046 ,  G01F1/90 ,  G01F15/022 ,  G01N33/225

摘要： The present invention is a method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the mass flow ratio of a pipeline gas flowing through a pipeline compared to sample gas tapped from the pipeline line when the volumetric flow of pipeline gas through the pipeline is measured by a linear flow meter. Sample gas tapped from the pipeline is flowed to a chamber having a section with a fixed volume until the pressure in the chamber section is substantially equal to the pipeline gas pressure. The sample gas is maintained at substantially the same temperature as the gas in the pipeline while the sample gas is in the chamber section. A timer measures the time interval for the sample gas to flow from the chamber section at a selected rate for a calculated pressure drop the selected rate being controlled by a flow controller. The mass flow ratio is computed using the measured time interval and a signal from the linear flow meter. The energy flow rate of the pipeline gas is determined by measuring the energy flow rate of the sample gas and relating that value to the mass flow ratio of the pipeline gas compared to the sample gas.

摘要翻译： 本发明是用于实时监测通过管道的气体的质量和能量流量的方法和装置。 本发明通过线性流量计测量管道气​​体通过管道的体积流量时，与管线中的抽样气体相比，确定流经管道的管道气体的质量流量比。 从管道抽出的样品气体流入具有固定体积的区段的室，直到室部分中的压力基本上等于管道气体压力。 当样品气体处于室部分时，样品气体保持在与管道中的气体基本相同的温度。 定时器测量样品气体以选定速率从腔室部分流出的时间间隔，用于计算的压降，所选择的速率由流量控制器控制。 使用测量的时间间隔和来自线性流量计的信号计算质量流量比。 管道气体的能量流量通过测量样品气体的能量流量并将其与该样品气体相比将该值与管道气体的质量流量比相关联来确定。