公开(公告)号：US20160348471A1

公开(公告)日：2016-12-01

申请号：US15167260

申请日：2016-05-27

Applicant: FLOW CONTROL LLC.

Inventor： Joel A. KENNEY ,  Robert W. KING

IPC: E21B34/08 ,  E21B43/12 ,  F16K15/14 ,  F16K17/04 ,  F16K15/04 ,  F16K15/02

CPC classification number: E21B43/121 ,  F16K15/021 ,  F16K15/04 ,  F16K17/0473 ,  F16K17/26

Abstract: A fluid release valve includes valve housing (VH) coupled between a pump and an outlet pipe, VH chamber providing fluid from its inlet and outlet when the pump starts, and fluid release orifice (FRO) draining outlet pipe fluid flowing back into the VH when the pump stops; and check valve (CV) combination having a CV shuttle that moves towards/away from the inlet/outlet and an internal shuttle chamber (ISC), and having a CV that moves towards/away from the inlet/outlet within the ISC. The CV combination responds to a pumped fluid pressure when the pump's pumping and stops the fluid from flowing from the inlet around the CV shuttle and out the FRO. The CV combination responds to a fluid differential pressure (FDP) when the pump stops and allows the outlet pipe fluid to drain out the FRO until the FDP reaches an equilibrium.

Abstract translation: 流体释放阀包括联接在泵和出口管之间的阀壳体（VH），当泵启动时从其入口和出口提供流体的VH室以及排出回流到VH中的出口管道流体的流体释放孔口（FRO） 泵停止; 以及具有沿着进/出口进入/离开的CV梭的止回阀（CV）组合和内部梭动室（ISC），并且具有向ISC内的入口/出口移动的CV。 当泵泵送并阻止流体从CV梭子周围的入口流出并流出FRO时，CV组合响应泵送的流体压力。 当泵停止时，CV组合响应流体压差（FDP），并允许出口管道流体排出FRO，直到FDP达到平衡。