Shell-and-tube heat exchanger with periodical shunting function

A front end socket is divided into an upper part and a lower part through a partition plate, an upper heat exchange tube is communicated with an upper end socket, a lower heat exchange tube is communicated with a lower end socket, and the upper end socket and the lower end socket are provided with an upper inlet and a lower inlet respectively. The fluid flow of the upper inlet and the fluid flow of the lower inlet can be independently controlled, and the fluid flow of the upper end socket and the fluid flow of the lower end socket are different, so that the fluid flow entering the upper heat exchange tube and the fluid flow entering the lower heat exchange tube are different. The upper and lower end sockets are arranged, so that the fluid flows of the upper and lower end sockets are different, and the heat exchange tubes with more fluid can form greater impact on the interior of the cavity, so that the fluid in the cavity of the baffle plate forms upward or downward disturbance, a circular flow is formed in t