Flow regulating valve

Abstract

A throttling flow control valve that allows to adjust an amount of flow by adjusting a size of a flow path through the valve comprises a body having inlet and outlet branch pipes with through passages, and a control element having movable regulating teeth each having an individual actuator and fixed regulating teeth. The movable regulating teeth and fixed regulating teeth each have a streamlined shape ending with a symmetrical wedge. The control element provides a throttling zone having a cross section in a shape of a multi-point star. By action of individual actuators, movable regulating teeth move on fixed regulating teeth, which results in efficient flow control due to varying of the throttling zone area.

Claims

1. A throttling flow control valve comprising: a body having inlet and outlet branch pipes with passage openings; and a control element having movable regulating teeth and fixed regulating teeth, wherein the control element provides a throttling zone; wherein each movable regulating tooth and each fixed regulating tooth has a form ending with a symmetrical wedge, wherein an angle of the symmetrical wedge is defined as 360/n, where n is a number of the movable regulating teeth, wherein each movable regulating tooth has an individual actuator, and wherein the throttling zone provided by the control element has a cross section in a shape of a multi-point star.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In FIG. 1 of the attached drawings, a general view of a present flow control valve is presented;

(2) In FIG. 2 shown is vertical cross-sectional view of the same; and

(3) In FIG. 3—shown is horizontal cross-sectional view of the same.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) The throttling flow control valve comprises body 1 with inlet and outlet branch pipes 2 and a control element having movable regulating teeth 3, each of the movable regulating teeth 3 having an individual actuator 4. The control element further comprises fixed teeth 5. Each movable regulating tooth and each fixed regulating tooth has a streamlined form ending with a symmetrical wedge, wherein an angle of the wedge is defined as 360/n, where n is a number of the movable regulating teeth. As a result of such arrangement, the control element provides a throttling zone 6 that has a cross section in a shape of a multi-point star.

(5) The flow control valve works as follows.

(6) By the action of individual actuators 4, movable regulating teeth 3 move on fixed regulating teeth 5; as a result of this movement, control of the flow is realized due to variation of the passage section area (or throttling zone) 6. Operation of actuators 4 is synchronized by means of certain devices not described herein.

(7) Implementation of the flow control valve with independent actuators of movable teeth allows: 1. When diameters of passage section exceed 500 millimeters, to make this arrangement independent on mechanical parts of the actuator which are large both in weight and overall dimensions; 2. Speed of performing of control actions is significantly higher than that at the mechanical transmission of movement, which is also especially actual at large diameters of the passage section.