Leakage-proof detection device for valve processing

The invention relates to the technical field of valve detection, in particular to a leakage-proof detection device for valve machining, which comprises a U-shaped frame, a first cylinder part, a to-be-detected valve body, a second cylinder part and a supporting part, and is characterized in that the to-be-detected valve body is arranged at the top of the supporting part, and the supporting part is detachably mounted in the middle of the bottom end of the inner wall of the U-shaped frame; the first cylinder piece is arranged at the inlet end of the valve body to be tested, and the second cylinder piece is arranged at the outlet end of the valve body to be tested. Through mutual cooperation of a first cylinder part, a first air injection cylinder, a sealing ring, a plug plate, a first hydraulic telescopic rod, a second cylinder part, a second air injection cylinder, a sealing plug, a pull rod, a tension meter and a second hydraulic telescopic rod, by means of air injection and air suction, a worker can rapidly