CONTROL VALVE Russian patent published in 2012 - IPC F16K11/02 

FIELD: machine building.

SUBSTANCE: control valve includes body 1 with inlet 2 and outlet 3 branch pipes. Gate valve made in the form of seat 4 and spool 5, and throttling grid 6 having annular chamber 7 with branch pipe 8 for supply of cooling liquid, are arranged in body 1. Internal side surface of annular chamber 7 is formed with bushing 9 having perforated holes 10 on side surface, which are located in several rows (three rows of holes are shown in the figure). Spool 5 is connected by means of stock 11 to drive mechanism 12. Tube 13, the free end of which is located in bushing 9 of annular chamber 7, is attached to spool 5 from below, along its longitudinal axis coinciding with axis of bushing 9 of throttling grid 6. In order to make the passage of steam flow possible to tube 13, channels 14 are made on its side surface not entering bushing 9.

EFFECT: possibility of obtaining stable temperature and pressure of working medium at the control valve outlet when parameters of the working medium change.

1 dwg