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公开(公告)号:US20150027567A1
公开(公告)日:2015-01-29
申请号:US14382602
申请日:2013-03-04
Applicant: Waters Technologies Corporation
Inventor: Joshua A. Shreve , John M. Auclair , Paul Keenan , Edwin Denecke , Gerald Wisser , Edward Bates , Eugene Berthiaume , Michael Bower
CPC classification number: F16K1/52 , B01D15/40 , F16K1/38 , F16K15/06 , F16K25/005 , F16K25/04 , F16K31/0655 , G01N30/32 , G01N30/36 , G01N2030/324 , G05D16/024 , G05D16/2022 , Y10T137/7904
Abstract: The invention generally provides a dynamic back pressure regulator. In exemplary embodiments, the back pressure regulator includes an inlet, an outlet, a seat disposed between the inlet and the outlet and defining at least part of a fluid pathway, and a needle displaceable relative to the seat to form a restriction region therebetween for restricting fluid flow between the inlet and the outlet. In some embodiments, the needle can be formed of a chemically resistant ceramic or have a metal plating to provide corrosion and/or erosion resistance.
Abstract translation: 本发明通常提供一种动态背压调节器。 在示例性实施例中,背压调节器包括入口,出口,设置在入口和出口之间并限定流体通路的至少一部分的座,以及可相对于座移动的针,以在其间形成限制区域 入口和出口之间的流体流动。 在一些实施例中,针可以由耐化学腐蚀陶瓷形成或具有金属电镀以提供耐腐蚀和/或耐腐蚀性。