MEANS OF VOLUMETRIC THERMAL AND FIRE PROTECTION OF DRIVE OF SHUTOFF AND CONTROL VALVES OF PIPELINE IN CASE OF FIRE Russian patent published in 2014 - IPC A62C2/06 

FIELD: fire safety.

SUBSTANCE: means of volumetric thermal and fire protection of drive of shutoff and control valves of pipeline in case of fire comprises a rigid box made in the form of an open vessel, which internal volume is equipped with a coating of fire retardant material. At that the securable object is made in the form shutoff and control valves with the housing and the main shaft connected to the locking element, the servo-actuator and the control unit. At that the bottom of this box is made of a rigid magnesite plate and the box is made in the form of a rigid volumetric frame with the walls of the sandwich panels. At that under the bottom of the means the bearing assembly is placed consisting of a support platform, and a lower sleeve is located in it in which the additional hollow shaft of the servo-actuator is mounted, connected to the main shaft of the locking element. At that in the contact between the panel of the bottom and the panels of the box the seal of soft fire retardant material is placed, glued by heat-resistant adhesive to the sandwich panels of the box, latticed with steel amplifier of its mechanical strength and provided with handles with the ability of its removal, the additional shaft of servo-actuator is kinematically connected to the joint lever rotation of the indicator of position of the locking element, and the electrical cable of the control unit and the working power supply connections of the servo-actuator are passed through the holes in the bottom of the means and are sealed in it.

EFFECT: improvement of operational capabilities and reliability of operation.

16 cl, 16 dwg