Water-cooling baffle plate provided with focusing coil water-cooling structure and used for accelerating tube

The utility model discloses a water-cooling baffle plate provided with a focusing coil water-cooling structure and used for an accelerating tube. The water-cooling baffle plate comprises a baffle plate body, wherein an annular water circulation channel is arranged on the baffle plate body, a water inlet and a water outlet are respectively formed on the water circulation channel, the water inlet is a long waist-shaped hole, and the water outlet is also a long waist-shaped hole; the long waist-shaped holes are formed at the middle part of the side surface of the water-cooling baffle plate, and the water circulation channel adopts a ladder-shaped double-layer structure. Compared with the prior art, the shapes of the water inlet and the water outlet which are respectively connected with a water inlet pipe and a water outlet pipe are designed into long waist-shaped holes from the original circular shapes, and as long as the water pipes are inserted in the long waist-shaped hole during the connection, the water pip