TWIN CABLE SPRING SUSPENDED CLOSING WEIGHT

摘要

Closing weight (6A) being suspended by cables (18) and springs (17) is provided for emergency closing of spherical valves (1) of a turbine. The weight (6A) is capable of moving in a weight pit. The angular movement of the valve door is stopped in a very precise position by provision of a micrometer adjustment nut at the farthest radius on a bracket fixed on the concrete wall (14). The weight (6A) is disposed at the farthest possible distance from the trunnion axis (5) and is hung by cables (18) attached to a lever (3) and is suspended through the pre-loaded springs (17).