Corrugated tube heat exchanger

The utility model provides a corrugated tube heat exchanger, including last tube sheet, casing, lower tube sheet, upper cover, low head, several node heat exchange tube, the both ends branch of casingmaybe the upper cover, the low head, tube sheet, lower tube sheet on being provided with on the casing, on the node heat exchange tube lower extreme respectively fixed connection at last tube sheet under, on the tube sheet, it is provided with the mesh board to go up between tube sheet, the lower tube sheet, the node heat exchange tube passes the mesh board and fixes on the mesh board, be provided with not evenly distributed's mesh on the mesh board. The utility model discloses a showing of the through -flow cross sectional area of outside of tubes changes, produces the turbulent effect thatis showing, makes the medium just can produce the turbulent state who compares the high flow rate and could produce under the low velocity of flow, is showing improvement heat exchange efficiency. 本实用新型提供种波节管换热器，包括上管板、壳体、下管板、上