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公开(公告)号:US08827238B2
公开(公告)日:2014-09-09
申请号:US13131459
申请日:2009-12-04
CPC分类号: E21B34/14 , E21B34/101 , E21B2034/007 , Y10T137/7904
摘要: A flow control device typically for protecting a seal (20) in a valve, wherein a body portion (5) has an orifice (8) allowing fluid flow, and the valve has a control portion (10) to allow and restrict fluid flow through the orifice. The flow control device has a fluid flow controller (30) between the body portion and the control portion in the form of at least one annular ring (35), disposed in a recess in one of the body portion and the control portion (10). The fluid flow controller (30) defines a leak path through the device that is opened and closed by a pressure differential acting across the annular member. Typically the application of a pressure differential across the fluid flow controller moves the ring(s) to one end of the recess and reduces the cross sectional area of the leak path available to the fluid, thereby diffusing the fluid flow through the orifice (8).
摘要翻译: 一种通常用于保护阀门中的密封件(20)的流量控制装置,其中主体部分(5)具有允许流体流动的孔口(8),并且所述阀门具有控制部分(10),以允许和限制流体流过 孔口。 所述流量控制装置在所述主体部分和所述控制部分之间具有设置在所述主体部分和所述控制部分(10)之一中的凹部中的至少一个环形环(35)形式的流体流量控制器(30) 。 流体流量控制器(30)限定穿过该装置的泄漏路径,其通过作用在环形构件上的压差来打开和关闭。 通常,跨越流体流量控制器的压力差的应用将环移动到凹部的一端,并减小了可用于流体的泄漏路径的横截面面积,从而使流体流动通过孔口(8)扩散, 。
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公开(公告)号:US20110297254A1
公开(公告)日:2011-12-08
申请号:US13131459
申请日:2009-12-04
IPC分类号: F16K15/00
CPC分类号: E21B34/14 , E21B34/101 , E21B2034/007 , Y10T137/7904
摘要: A flow control device typically for protecting a seal (20) in a valve, wherein a body portion (5) has an orifice (8) allowing fluid flow, and the valve has a control portion (10) to allow and restrict fluid flow through the orifice. The flow control device has a fluid flow controller (30) between the body portion and the control portion in the form of at least one annular ring (35), disposed in a recess in one of the body portion and the control portion (10). The fluid flow controller (30) defines a leak path through the device that is opened and closed by a pressure differential acting across the annular member. Typically the application of a pressure differential across the fluid flow controller moves the ring(s) to one end of the recess and reduces the cross sectional area of the leak path available to the fluid, thereby diffusing the fluid flow through the orifice (8).
摘要翻译: 一种通常用于保护阀门中的密封件(20)的流量控制装置,其中主体部分(5)具有允许流体流动的孔口(8),并且所述阀门具有控制部分(10),以允许和限制流体流过 孔口。 所述流量控制装置在所述主体部分和所述控制部分之间具有设置在所述主体部分和所述控制部分(10)之一中的凹部中的至少一个环形环(35)形式的流体流量控制器(30) 。 流体流量控制器(30)限定穿过该装置的泄漏路径,其通过作用在环形构件上的压差来打开和关闭。 通常,跨越流体流量控制器的压力差的应用将环移动到凹部的一端,并减小了可用于流体的泄漏路径的横截面面积,从而使流体流动通过孔口(8)扩散, 。
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