Vertical heat treatment assembly for heat treatment of thin-walled tube and application method

The invention discloses a vertical heat treatment assembly for heat treatment of a thin-walled tube. The vertical heat treatment assembly comprises a quartz glass assembly, a thin-walled tube plug, a weight and a constant current source, the quartz glass assembly comprises a quartz glass tube, an upper quartz glass tube end plug, a lower quartz glass tube end plug, an upper quartz glass port and a lower quartz glass port; the upper quartz glass tube end plug and the lower quartz glass tube end plug are detachably mounted at the two ends of the quartz glass tube; the thin-wall pipe plug piece comprises an upper breather pipe, an upper end plug, an upper fixing chuck, a lower breather pipe, a lower end plug and a lower fixing chuck. The upper breather pipe is detachably mounted in the upper end plug, and the lower breather pipe is detachably mounted in the lower end plug; the vertical heat treatment assembly for heat treatment of the thin-walled tube comprises the quartz glass assembly, the thin-walled tube plu