Liquid cooling plate NB furnace brazing tool

The utility model provides a liquid cooling plate NB furnace brazing tool which comprises an upper supporting plate and a plurality of lower supporting plates, the upper supporting plates are arranged at intervals, first clamping grooves are formed in the bottoms of the upper supporting plates at intervals and used for supporting a top water cooling plate, and fixing through grooves are formed in the upper supporting plates at intervals; the vertical penetrating columns are inserted into the fixing through grooves and used for connecting the multiple upper supporting plates in series; the bottom supporting plates play a role in supporting the upper supporting plates, the adjacent bottom supporting plates are connected through transversely-penetrating columns, second clamping grooves are formed in the tops of the bottom supporting plates and connected with the first clamping grooves in a clamped mode, the bottoms of the bottom supporting plates are connected with L-shaped supporting blocks, the tops of the L-s