Sealing structure for window plate of gyrotron output window

The invention discloses a sealing structure for a window plate of a gyrotron output window, which relates to microwave technology. A window frame of an output window of the sealing structure is transversely partitioned into a front part and a back part; the diameter of the window plate of the output window is larger than the outer diameter of the window frame of the output window; the circumference of one end on a joint between the two parts of the window frame of the output window and opposite to the front part and the back part is provided with an outward inverted-L-shaped lug and the circumference of the other end opposite to the back part or the front part is provided with an outward orthogonal flange; and the inner side faces of the inverted-L-shaped lug and the orthogonal flange arematched and fixedly connected with the circumference of the window plate of the output window respectively. The sealing structure for the window plate of the gyrotron output window has the advantagesof large effective sealing