CONNECTING DEVICE AND INTEGRATED ASSEMBLY

A connecting device and an integrated assembly are provided. The connecting device comprises a reinforcing portion and a flow channel portion, wherein the reinforcing portion is in a fixed or limited arrangement with the flow channel portion. The connecting device is provided with a plurality of external interfaces which can be used for connecting to a system, and the flow channel portion comprises at least two modules and at least one interface portion; each module comprises a main body portion and a bottom plate, the main body portion is provided with recessed grooves on the side thereof close to the bottom plate, the main body portion of the first module is fixed to the bottom plate by means of welding to form at least two communicating portions, and each communicating portion comprises a space where a corresponding groove is located.