Moisture on -line measuring device of crude oil

The utility model relates to a detection device field, concretely relates to a to moisture on -line measuring device of crude oil. Which comprises a petroleum pipeline, the detection case internal fixation has the water content detector, water content detector and acquisition terminal electric connection, be provided with the water pump on cleaning fluid box's the feed liquor pipe, be provided with the leakage fluid dram with the axle center with transition cylinder on the detection case bottom plate, the leakage fluid dram top is provided with the apron, apron terminal surface down is provided with the rubber pad, be provided with the movable rod in the transition cylinder, be fixed with the rubber ring on the inner wall of trompil, the inner edge of rubber ring and the contact of the outer fringe sliding seal of movable rod, the movable rod lower extreme is fixed with the baffle, the cover is equipped with the spring on the movable rod between baffle and the transition cylinder bottom plate, transition cyli