公开(公告)号：US06536471B2

公开(公告)日：2003-03-25

申请号：US09901784

申请日：2001-07-09

申请人： Teresa Lechner-Fish ,  Henry Mancha

发明人： Teresa Lechner-Fish ,  Henry Mancha

IPC分类号： F16K1110

CPC分类号： F17D1/00 ,  F17D1/04 ,  G01N1/16 ,  G01N33/0011 ,  G01N35/1097 ,  G01N2001/205 ,  Y10T137/7021 ,  Y10T137/87249

摘要： A novel stream switching system includes a unitary housing having a common stream path for a multitude of fluid streams from, for example, a process pipeline. A set of solenoids or other switches attached to the housing directly controls the flow of each fluid stream. Preferably, the solenoids are default-closed, low dead-volume solenoids that, unlike conventional low dead volume solenoids, are closed if not supplied with electricity. These solenoids are adapted to the wide temperature ranges encountered in the pipeline environment by increasing the voltage applied to the solenoids. The housing also preferably includes a pre-heat region to warm the sample to a desired temperature.

摘要翻译： 新颖的流切换系统包括具有用于例如流程管线的多个流体流的公共流路的整体壳体。 连接到壳体的一组螺线管或其它开关直接控制每个流体流的流动。 优选地，螺线管是默认关闭的低死体积螺线管，其与传统的低死体积螺线管不同，如果不被供电则关闭。 这些螺线管适应于通过增加施加到螺线管的电压在管道环境中遇到的宽温度范围。 壳体还优选地包括将样品温热至所需温度的预热区域。