Stainless steel heat exchanger is a large heat exchanger. One of the most widely used stainless steel heat exchanger is on the chemical and alcohol production at present. Stainless steel heat exchanger tubes from the tube plates, baffles, housing, cover (header) and other components. Stainless steel heat exchanger design and manufacture of quality directly affect the continuity of the heat exchanger life and production. It mainly consists of shell, tube sheets, tubes, head, baffles and other components.
To overcome the thermal stress must have temperature difference compensation device, usually when the temperature difference between the wall and the shell wall above 50 ℃, for safety reasons, the temperature difference between the heat exchanger due compensation device. However, compensation means (expansion joint) can be used in the temperature difference between the shell wall and the tube wall is less than 60 ~ 70 ℃ and the shell-side fluid pressure is not high. General pressure exceeds 0.6Mpa shell ring due compensation is too thick, difficult stretch, losing the temperature difference between the role of compensation, they should consider other structures.
