Stainless steel heat exchanger tube plate unit

The invention relates to a stainless steel heat exchanger tube plate unit, specifically relates to a stainless steel heat exchanger tube plate unit relatively high in heat conversion efficiency, and belongs to the technical field of heat exchangers. The stainless steel heat exchanger tube plate unit comprises a left tube plate, a right tube plate, a housing and cooling tubes; the two ends of the housing are connected with the left tube plate and the right tube plate both with mounting holes, respectively; the cooling tubes are arranged in the housing; the two ends of the cooling tubes are inserted into the mounting holes of the left tube plate and the right tube plate, respectively. A combustion chamber is arranged in the housing; the combustion chamber comprises a first cooling region, a second cooling region, a third cooling region, a fourth cooling region, a fifth cooling region and a sixth cooling region; the cooling tubes include a first cooling tube, a second cooling tube, a third cooling tube, a fourth cooling tube, a fifth cooling tube and a sixth cooling tube. According to the stainless steel heat exchanger tube plate unit, the combustion chamber is divided into different regions, and the cooling tubes different in diameter are arranged in the different regions; as a result, the heat exchange area is increased, the heat conversion efficiency is improved, and the reduction of unit gas input and the saving of the gas can be realized under the circumference of the same output power.