Vacuum welding chamber for nuclear fuel subassembly

The invention belongs to the technical field of nuclear fuel element manufacturing, and particularly relates to a vacuum welding chamber for a nuclear fuel subassembly. The lower part of the glass tube penetrates through the induction coil and is arranged on the base; the sealing cover is arranged at the upper part of the glass tube; and the glass tube is made of a high-temperature-resistant quartz glass material. And two layers of sealing rings are respectively arranged above and below the glass tube. The convex points of the glass tube are in a regular cross shape. The inner diameter and the length of the glass tube in flexible design are the same, and welding of two sub-assemblies is achieved through replacement of the base and different sizes of convex points of the glass tube. The output value of the vacuum welding chamber after capacity expansion can be increased, spot welding of a secondary assembly in the previous procedure is matched, the two devices are linked, and the automation level of the spot b