BALANCED CONTROL VALVE Russian patent published in 1995 - IPC

FIELD: power mechanical engineering. SUBSTANCE: catting-off cap 9, guide journal box 6, passing journal box 6, driving rod 8 passing inside the journal box, and relief valve with a mechanism for control of pressure are coaxially mounted in steam box 1 transforming into diffuser seat 2. The mechanism for control of pressure is made up of bushing 7 secured to the journal box and positioned coaxially with the valve and connection opening provided between the relief space and steam box. Cross-section of the bushing decreases in the direction of steam flow. The connection opening is made in the center of force diaphragm 12 which bounds the relief space. This allows to stabilize submerging of the valve. There is disk 14 with radial slots on the face of the cap of the relief valve which faces the force diaphragm. EFFECT: optimized submerging of the valve. 2 cl, 2 dwg