BALL VALVE Russian patent published in 2017 - IPC F16K5/06 F16K31/02 F16K31/54 

FIELD: machine engineering.

SUBSTANCE: intermediate drive shaft of the ball valve, with the ability to set the torque transfer, contains the drive. On the outer surface of the disc with evenly spaced steps, the teeth of trapezoidal profile are formed. Tangentially to the drive, two parallel rails are mounted. The teeth of trapezoidal profile on the disk surface are mated with teeth of similar profile of two parallel cylindrical rods. Each rack is spring-loaded and has the ability to move through the tangential coaxial rigidly fixed guide. During a power failure and power plant protection system deenergized floating sleeve under the action of axial movement of the spring moves up and disengages from the projections of the intermediate shaft. The actuator drive shaft is released from connection with intermediate shaft. The spring rails are able to turn over the tooth disc with the intermediate shaft up to 90 degrees and set the ball valve ball valve to the "CLOSED".

EFFECT: increased security of power units by providing instant automatic closing of the ball valve in the event of a power outage.

2 dwg