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    • 1. 发明申请
    • DUAL PARALLEL HYDRAULIC ACTUATOR
    • 双平行液压执行器
    • WO2016175661A1
    • 2016-11-03
    • PCT/NO2016/050076
    • 2016-04-27
    • AKER SOLUTIONS AS
    • FERREIRA, Victor RodriguezNEWLANDS, Nicholas
    • F16K31/122F15B15/14F16K3/00
    • F16K3/0254F15B15/1409F15B20/00F15B2211/864F15B2211/8757F16K31/1221F16K31/1225
    • The invention relates to agate valve hydraulic actuator, said actuator comprising a cup shaped sleeve (9)which is operably coupled to an opening or closing element (5) of the gate valve (2),the actuator further comprising a movable primary piston (13) arranged within a primary cylinder (12) arranged at the inside of the cup-shaped sleeve (9), said primary piston (13) being configured to move the sleeve (9) and hence said opening and closing element (5) towards an open or closed position of the gate valve (2) by a force applied to the primary piston (13). The hydraulic actuator is distinctive in that it further comprising a movable secondary piston (11) arranged within a secondary cylinder (10) arranged at the inside of the cup shaped sleeve (9), said secondary piston (11) being configured to move the sleeve (9) to the same position of the gate valve (2) as the primary piston by a force applied to the secondary piston in case of failure of the primary piston (13), said primary piston (13) and secondary piston (11) are independently operable of each other.
    • 本发明涉及玛瑙阀液压致动器,所述致动器包括杯形套筒(9),其可操作地联接到闸阀(2)的打开或关闭元件(5),所述致动器还包括可移动主活塞(13) )布置在布置在杯形套筒(9)内部的主缸(12)内,所述主活塞(13)构造成使套筒(9)从而使所述打开和关闭元件(5)朝向 通过施加到主活塞(13)的力,闸阀(2)的打开或关闭位置。 液压致动器是独特的,其还包括布置在杯形套筒(9)内部的次级缸(10)内的可移动副活塞(11),所述次级活塞(11)构造成使套筒 (13)和第二活塞(11)在第一活塞(13)发生故障的情况下,通过施加到次级活塞的力,将闸阀(9)移动到与主活塞相同的位置, 可彼此独立操作。