公开(公告)号：WO2015164947A1

公开(公告)日：2015-11-05

申请号：PCT/CA2015/000278

申请日：2015-05-01

Applicant: MASTER FLO VALVE INC.

Inventor： BOYHAYCHUK, Larry

IPC: F16K31/12 ,  F16K3/32 ,  F16K31/16 ,  F16K31/52

CPC classification number: F16K3/246 ,  E21B34/02 ,  F16H31/001 ,  F16H31/003 ,  F16K31/047 ,  F16K31/12

Abstract: Valve system with rotary stepping actuator to actuate a valve stem. An actuator drive shaft is supported for stepwise rotation in clockwise and counterclockwise directions to impart rotation to a valve stem nut to axially move a valve stem to open and close valve flow trim. The drive shaft forms peripheral first and second slotted circular drive paths co-axially spaced from each other. The drive paths include outwardly-opening, circumferentially-spaced slots which are matched in number, size and spacing, but the slots in the first drive path are rotationally offset from the slots in the second drive path by a set fraction, for example one half of the slot spacing. Actuation assemblies provide separate forward and reverse actuation cycles to the drive shaft to incrementally rotate the drive shaft in predetermined angular increments (steps) set by the slot spacing. Due to the offset, a counter step in a direction counter to the direction of a directly preceding step rotates the drive shaft by an amount less than the predetermined angular increment, as determined by the set fraction. If the set fraction is one half, the counter step rotates the drive shaft by a half step, while the next following step in the same counter direction is a full step in the predetermined angular increment.

Abstract translation: 具有旋转步进执行器的阀门系统来启动阀杆。 致动器驱动轴被支撑以沿顺时针和逆时针方向逐步旋转，以向阀杆螺母施加旋转以轴向移动阀杆以打开和关闭阀流动装饰。 驱动轴形成彼此同轴间隔开的外围第一和第二开槽圆形驱动路径。 驱动路径包括在数量，尺寸和间距上匹配的向外开口的周向间隔的槽，但是第一驱动路径中的槽在第二驱动路径中的槽之间旋转偏移设定的分数，例如一半 的槽间距。 驱动组件向驱动轴提供单独的前进和反向致动循环，以以由槽间隔设定的预定角度增量（步长）递增地旋转驱动轴。 由于偏移，与直接前进步骤的方向相反的方向的相反步骤使驱动轴以小于由设定分数确定的预定角度增量的量旋转。 如果设定分数为一半，则计数器步骤将驱动轴旋转半个步骤，而相同反方向的下一个后续步骤是预定角度增量的完整步长。

公开(公告)号：WO2011088548A1

公开(公告)日：2011-07-28

申请号：PCT/CA2011/000027

申请日：2011-01-13

Applicant: MASTER FLO VALVE INC. ,  BOHAYCHUK, Larry ,  MCNEILL, Mark, K.

Inventor： BOHAYCHUK, Larry ,  MCNEILL, Mark, K.

IPC: F16K3/314 ,  E21B34/02 ,  F16K3/26 ,  F16K47/04 ,  F16K5/04

CPC classification number: F16K3/24 ,  F16K27/041 ,  Y10T29/49405 ,  Y10T137/7036 ,  Y10T137/7668 ,  Y10T137/86734 ,  Y10T137/86759

Abstract: A cage valve, flow trim components and method for reduced fracturing of flow trim. The valve is of the type having flow trim arranged across an inlet bore and aligned with an outlet bore, and including a stationary tubular cage and an external cylindrical flow collar slidable along the side wall of the cage to cover or uncover one or more flow ports in the cage side wall. The tubular cage is formed such that, at least in the ported portion in which the flow ports are formed, the cage includes a tubular outer cage member and a tubular inner cage member, the inner cage member and the outer cage member being formed from a tungsten carbide material, being concentrically aligned, having a length to span at least the ported portion, and being joined together by bonding at an interface formed between the inner cage member and the outer cage member.

Abstract translation: 笼式阀，流动装饰部件和减少流动装置压裂的方法。 该阀是具有横跨入口孔布置并与出口孔对准的流动装置的类型，并且包括固定管状保持架和可沿着保持架的侧壁滑动的外部圆柱形流动套管，以覆盖或露出一个或多个流动端口 在笼子的侧壁。 管状保持架形成为使得至少在形成流动端口的端口部分中，保持架包括管状外保持构件和管状内笼构件，内保持架构件和外保持架构件由 碳化钨材料同心对准，其长度至少跨越端口部分，并且通过在形成在内笼构件和外笼构件之间的界面处的结合而接合在一起。