초록 ▼

A slide valve for use in throttling the flow of fluid containing solid particles uses a fixed triangle orifice to reduce flow impingement on the wall of the valve defined by the valve body. The triangular shape and its orientation minimizes the flow of particles near the wall and geometrically incre

A slide valve for use in throttling the flow of fluid containing solid particles uses a fixed triangle orifice to reduce flow impingement on the wall of the valve defined by the valve body. The triangular shape and its orientation minimizes the flow of particles near the wall and geometrically increases the flow area with the movement of a single disc to reduce the decentralization of flow through the valve as the disc effects flow control.

대표청구항 ▼

[ What is claimed:] [1.] A slide valve adapted for use in flow control of fluid streams containing erosive particles, said valve comprising:a valve body comprising a wall defining a circular, central flow passage along a linear flow path that connects an inlet and an outlet for flow in a single dire

[ What is claimed:] [1.] A slide valve adapted for use in flow control of fluid streams containing erosive particles, said valve comprising:a valve body comprising a wall defining a circular, central flow passage along a linear flow path that connects an inlet and an outlet for flow in a single direction along a primary axis of said valve body and defining an opening transverse to said primary axis;a single disc member retained in said valve body at the location of said transverse opening for movement normal to said primary axis and defining a leading edge for contacting said fluid stream;a pair of guides for slidably retaining said disc in said valve body;means for selectively moving said disc in said guides from a closed position to an open position; and,an orifice plate fixed with respect to said valve body and located adjacent to said disk, said disc, said orifice plate defining an orifice opening perpendicular to said primary axis, said orifice opening having a cross section in the shape of an equilateral triangle with an apex of the triangle positioned closest to said leading edge when the valve is in a closed position and the base of the triangle defining the orifice positioned normal to the direction of disc movement to reduce the volume of said stream that is discharged adjacent to the wall of said valve body and centralize the discharge of flow with respect to the valve body wherein the apex and the base of the triangle are located away from the wall of the valve body by a distance equal to 1/3 of the diameter of the central flow passage.