公开(公告)号：US06173734B1

公开(公告)日：2001-01-16

申请号：US09432993

申请日：1999-11-03

申请人： John D. Olivas ,  Mark C. Martis ,  Patrick J. Cunningham

发明人： John D. Olivas ,  Mark C. Martis ,  Patrick J. Cunningham

IPC分类号： F16K1700

CPC分类号： F16K17/30 ,  Y10T137/7725 ,  Y10T137/7727 ,  Y10T137/7842 ,  Y10T137/88054

摘要： A mechanical leak arresting valve is disclosed in which fluid through the valve is limited to a range between a predetermined minimum flow rate and a predetermined maximum flow rate, and where both a small or large downstream leak mechanically causes the valve to lock closed. The present invention uses a locking mechanism triggered by a pressure differential resulting from the downstream leak to block the flow of fluid through the valve until the fluid source upstream is stopped. Reduction of the upstream pressure by the stopping of the fluid source automatically resets the valve without further manipulation.

摘要翻译： 公开了一种机械泄漏阻止阀，其中通过阀的流体被限制在预定的最小流量和预定的最大流量之间的范围内，并且其中小的或大的下游泄漏机械地使阀锁闭。 本发明使用由下游泄漏产生的压力差触发的锁定机构，以阻止通过阀的流体流动，直到流体源上游停止。 通过流体源的停止来减少上游压力自动复位阀而不进一步操纵。

公开(公告)号：US06634375B2

公开(公告)日：2003-10-21

申请号：US09982220

申请日：2001-10-17

申请人： John D. Olivas ,  Mark C. Martis ,  Patrick J. Cunningham ,  William Ronald Martis ,  Juan Olivas, Jr. ,  Ray D. Kelm

发明人： John D. Olivas ,  Mark C. Martis ,  Patrick J. Cunningham ,  William Ronald Martis ,  Juan Olivas, Jr. ,  Ray D. Kelm

IPC分类号： F16K1726

CPC分类号： F16K17/30 ,  Y10T137/1624 ,  Y10T137/7725 ,  Y10T137/778 ,  Y10T137/7781 ,  Y10T137/7835 ,  Y10T137/7841 ,  Y10T137/7842 ,  Y10T137/7869

摘要： A flow control valve is disclosed wherein a housing defines a flow chamber with an inlet and an outlet. Disposed within the flow chamber is a poppet assembly comprising an inner poppet and an outer poppet. A first spring is selected to bias the outer poppet to seal closed the inlet below a predetermined fluid flow rate. Above the fluid flow rate, the force of the fluid against the outer poppet compresses the spring, breaking the seal and allowing fluid to flow into the fluid flow chamber. Inside the outer poppet is an inner poppet which extends from the outer poppet. A second spring biases the inner poppet predominantly within the outer poppet, but an increased pressure inside the outer poppet collapses the second spring and extends the inner poppet in a fully extended position. Fully extended the inner poppet shuts the outlet of the fluid chamber thereby arresting the flow. In operation, the first spring shuts the valve below a predetermined flow rate guaranteeing zero flow until a minimum flow rate is present. Furthermore, if a leak occurs downstream (beyond the outlet) or the flow rate is above a predetermined maximum flow rate the second spring is collapsed by an upstream/downstream pressure differential causing the inner poppet to seal the outlet. Thus, the valve operates only between a minimum and maximum flow rate and seals in the event of a downstream leak.