Valve opening indicating structure for nuclear power plant and valve

The utility model relates to the technical field of nuclear power plant operation optimization, in particular to a valve opening indicating structure for a nuclear power plant and a valve. The valve opening indicating structure comprises a mounting frame, a magnetic piece and an indicating overturning piece. The installation frame is used for being installed at the position, close to the valve rod and away from a pollution source, of the valve rod, the indication overturning piece is installed on the installation frame and comprises a plurality of indication balls which are independently arranged, and each indication ball can rotate around the axis of the indication ball. The magnetic part is used for being installed at the position, away from a pollution source, of the valve rod and can be magnetically attracted to the indicating ball to drive the indicating ball to rotate. According to the valve opening indicating structure, the indicating overturning piece and the magnetic piece are both installed at the p