公开(公告)号：US07059194B1

公开(公告)日：2006-06-13

申请号：US09526651

申请日：2000-03-15

申请人： Michael A. Lueck ,  Michael P. Johnson ,  Randall R. Perkins

发明人： Michael A. Lueck ,  Michael P. Johnson ,  Randall R. Perkins

IPC分类号： G01L9/10 ,  G01L7/16 ,  E03B7/07

CPC分类号： G01L7/166 ,  Y10T137/8242

摘要： The invention involves a pressure fault device for indicating a threshold pressure or a threshold differential pressure. The present invention provides a cost effective way to determine where a pressure problem has occurred. The device includes a housing having at least one inlet aperture and an indicator aperture and having first and second bores in fluid communication respectively with one inlet aperture and the indicator aperture. The device further includes a magnetic piston which is biased in the first bore toward one inlet aperture and moveable a predetermined distance in another direction in the first bore in response to inlet threshold pressure. The device further includes a magnetic responder which is moveable toward the indicator aperture in the second bore in response to movement of the magnetic piston. The device further includes a latching plate in magnetic relationship to the magnetic responder when the piston moves the predetermined distance. An indicator is disposed in the second bore and partially extends through the indicator aperture. At a threshold pressure or differential pressure, the magnetic responder responds to movement of the magnetic piston and latches onto the latching plate, thrusting the indicator partially through the indicator aperture to indicate a threshold has been reached. The configuration of the magnetic piston and the magnetic responder prevents the magnetic responder from being dislodged from the latching plate, even when the threshold is removed and the magnetic piston returns to its initial position. The magnetic responder can be manually reset when the threshold pressure is removed.

摘要翻译： 本发明涉及用于指示阈值压力或阈值差压的压力故障装置。 本发明提供了一种确定压力问题发生位置的成本有效的方法。 该装置包括具有至少一个入口孔和指示器孔的壳体，并且具有分别与一个入口孔和指示器孔流体连通的第一和第二孔。 该装置还包括一个磁性活塞，该活塞在第一孔中偏向一个入口孔，并响应于入口阈值压力在第一孔中在另一个方向上可移动预定距离。 该装置还包括响应于磁性活塞的运动而可朝向第二孔中的指示器孔移动的磁响应器。 该装置还包括当活塞移动预定距离时与磁响应器呈磁性关系的闭锁板。 指示器设置在第二孔中并且部分地延伸穿过指示器孔。 在阈值压力或压差下，磁响应器响应于磁性活塞和闩锁到锁定板的运动，将指示器部分地推过指示器孔，以指示达到阈值。 磁性活塞和磁响应器的配置防止磁响应器从锁定板移出，即使当阈值被移除并且磁性活塞返回到其初始位置时。 当取消阈值压力时，可以手动复位磁响应器。