Locking and detecting device for vertical pipe valve

The utility model relates to a locking device, in particular to a locking and detecting device for a vertical pipe valve. Te locking and detecting device for the vertical pipe valve comprises a hand disc stretching and fixing hook, a stay wire, a drop hammer and a marking clamp ring; wherein a hole is punched on a hand disc spoke; one end of the hand disc stretching and fixing hook is in hook joint with the hand disc hole; the other end of the hand disc stretching and fixing hook is in hook joint with a flange provided with a hole or a bolt on a pipeline; the upper end of the stay wire is fixed at the upper part of a hand disc; the lower end of the stay wire is connected with the drop hammer; the marking clamp ring is clamped on the hand disc; and the vertical direction of the marking clamp ring coincides with the stay wire. The locking and detecting device for the vertical pipe valve can prevent the vertical pipe valve from loosening and can detect whether the vertical pipe valve loosens so as to avoid abnor