Shell and tube heat exchanger

The utility model can be widely applied to petroleum, chemical, light industry, energy, power and other fields and particularly relates to a shell-and-tube heat exchanger, which comprises a housing, heat exchange tubes arranged in the housing, and supporters arranged among the heat exchange tubes. The supporters arranged among the heat exchange tubes are spiral spring supporters. The axes of the spiral spring supporters are parallel to the axes of the heat exchange tubes. Due to the adoption of the shell-and-tube heat exchanger, since the heat exchange tubes are supported by the spiral spring supports, the turbulence and mixing state of the shell-side fluid can be effectively improved. Meanwhile, the thickness of a boundary layer is reduced. The shell-and-tube heat exchanger itself is relatively small in fluidic resistance and higher in heat transmission efficiency. Due to the adoption of special-shaped reinforced heat exchange pipes, the convection heat exchange inside and outside heat exchange tube is reinforced and the total heat exchange coefficient is increased. The heat transfer property of the entire heat exchanger is increased. Due to the adoption of the spiral spring supporters, the metal material is saved and the production cost is lowered. Meanwhile, energy is saved.