Calorimetric target waterway and target plate opening and closing structure based on magnetofluid vacuum sealing

The invention discloses a calorimetric target waterway and target plate opening and closing structure based on magnetofluid vacuum sealing. The calorimetric target waterway and target plate opening and closing structure comprises a calorimetric target structure, a supporting structure, a calorimetric target plate and opening and closing structure, a vacuum sealing flange, a magnetofluid sealing cavity, a driven gear, a multi-layer water pipe and rotating shaft, a water outlet connector, a water inlet connector, a driving stepping motor, a driving gear, a measured water convergence cavity, a water-cooling oxygen-free copper plate, a water outlet copper pipe, a water inlet pipe, a target plate water diversion cavity, a rotating shaft, a rotating pulley, a limiter and a rotating bearing. Compared with a lifting calorimetric target with a disc telescopic structure, the measuring target has the beneficial effects of small driving power, greatly reduced size and height of a driving mechanism, low gravity center and