Opening degree detection structure acting on butterfly valve

The utility model discloses an opening degree detection structure acting on a butterfly valve in the field of butterfly valves, which comprises a rotor assembly, an induction assembly and a sealing assembly, the rotor assembly consists of a connecting rod, a short shaft and an induction sheet, and the angle of the induction sheet is changed along with the rotation of the short shaft; the sensing assembly is composed of a valve position transmitter, a support, a pressing flange and an end cover, and the valve position transmitter senses the angle change of the sensing piece. The sealing assembly is composed of a sealing clamping table, sealing packing and a packing gland, and shaft side water leakage is prevented. According to the utility model, the angular displacement sensor and the short shaft of the butterfly valve are combined together through the structural design, and the device is mainly used for transmitting an opening signal and can accurately detect the opening of the butterfly valve; a non-contact