초록 ▼

Disclosed is a wireline cutting actuator and valve assembly. The valve includes a valve body having a gate reciprocatingly mounted therein. The gate has a stepped bore. The actuator includes a bonnet adapted for connection to the valve body and an actuator shaft having an inner end adapted for conne

Disclosed is a wireline cutting actuator and valve assembly. The valve includes a valve body having a gate reciprocatingly mounted therein. The gate has a stepped bore. The actuator includes a bonnet adapted for connection to the valve body and an actuator shaft having an inner end adapted for connection to the valve member. The actuator shaft extends outwardly of the bonnet. An actuator housing is releasibly connected to the bonnet and positioned about the actuator shaft. A spring is provided for urging the actuator shaft outwardly with respect to the bonnet. A piston housing assembly is releasibly connected to the actuator housing. A piston is slidingly mounted in the piston and is abuttable with the outer end of the actuator shaft to urge the actuator shaft inwardly with respect to the bonnet. A piston shaft is inwardly and outwardly movable with the piston and extends outwardly of the piston housing.

대표청구항 ▼

A wireline cutting actuator and valve assembly adapted to close automatically and sever a wireline in the valve as the valve is operable toward the valve closed position, which comprises: a valve body including an inlet port and an outlet port with a flowway therebetween for extending a wireline the

A wireline cutting actuator and valve assembly adapted to close automatically and sever a wireline in the valve as the valve is operable toward the valve closed position, which comprises: a valve body including an inlet port and an outlet port with a flowway therebetween for extending a wireline therethrough; a first annular seat positioned in said flowway, said first seat having a first predetermined inside diameter; a second annular seat positioned in said flowway axially aligned with and spaced apart from said first annular seat, said second seat having a second predetermined inside diameter greater than said first inside diameter of said first seat; a gate positioned between said first and second seats, said gate including a bore and an imperforate portion adjacent said bore, said gate being movable generally perpendicular to said flowway between a valve closed position wherein said imperforate portion is positioned between and in sealing engagement with at least one of said first and second seats and a valve open position wherein said bore is positioned between said first and second seats, said gate bore having a first inside diameter adjacent said first seat substantially equal to said first inside diameter of said first seat, and said gate bore having a second inside diameter adjacent said second seat substantially equal to said second inside diameter of said second seat, said first seat and first inside diameter of said gate bore cooperating to sever a wireline in said flowway at only one location as said gate moves from said valve open position to said valve closed position; a bonnet connected to said valve body, said bonnet including a bonnet bore; an actuator shaft extending outwardly of said bonnet through said bonnet bore, said actuator shaft having an inner end with means for connecting said inner end to said gate, and an outer end displaced from said gate, said actuator shaft including a sealing portion defined on said shaft which cooperates with said bonnet to limit outward movement of said actuator shaft with respect to said bonnet; a plurality of disk springs stacked about said actuator shaft and operable when compressed to urge said actuator shaft outwardly with respect to said bonnet; spring compression means connected to the outer end of said actuator shaft for compressing said plurality of disk springs; an actuator housing releasably connected to said bonnet and positioned about said actuator shaft and said plurality of disk springs; and a piston power assembly removably connected to said actuator housing, said piston power assembly including: (a) a piston housing releasably connected to said actuator housing; (b) a piston slidingly mounted in said piston housing and abuttable with the outer end of said actuator shaft and operable when power energized to urge said shaft inwardly with respect to said bonnet, said piston being removable from said actuator shaft with said piston housing; (c) and a piston shaft inward and outwardly movable with said piston and extending outwardly of said piston housing.