'MASTER FUEL TRIP VALVE IN TIGHT SEAL APPLICATIONS WITH LARGE TEMPERATURE DIFFERENTIAL ACROSS DOWNSTREAM AND UPSTREAM COMPONENTS OF GATE IN SOLID FUEL FEEDING SYSTEMS'

摘要

Master fuel trip valve in tight seal applications with large temperature differential across downstream and upstream components of gate in solid fuel feeding systems, comprising : a casing accommodating at least one wedge shaped master fuel trip valve disposed below the self cleaning rotary valves, and having at the upstream and downstream ends flanges matching with that of the duct flanges, the gate casing being positioned horizontally with the master fuel trip valve device, and having one each top and bottom plate and at least four side casing plates; a gate sealing means comprising one each top and bottom gate plate, a carriage plate centrally located between the top and bottom gate plates, a plurality of spring elements distributed over five location across the width of the gate plates, and at least two bracket means disposed along the width of the gate plates; an electrical actuator means with an actuating shaft including a kinetic linkage mechanism to convert the rotary motion of the actuator shaft to a linear motion of the gate all through the open and closed position; and a plurality of flexible bracket connections disposed over the width of the gate at equi- distant locations to achieve a tight seal between the connections and the gate.