Multi-stream winding pipe heat exchanger with pipe pass capable of being cleaned on line

The invention discloses a multi-stream winding pipe heat exchanger with a pipe pass capable of being cleaned on line. The heat exchanger comprises an upper pipe box, a middle barrel body and a lower pipe box, an inner cavity of the middle barrel body is divided into an upper barrel body, a columnar pipe box and a lower barrel body by a first pipe plate and a second pipe plate, a perforated plate is connected in the pipe box and divides the pipe box into an upper space and a lower space, a distributor is mounted in the upper space, a nozzle is connected to the distributor, a demineralized waterinlet pipe is connected to the outer wall of the middle barrel body, a bubble cap plate is arranged in the lower space, pipelines are arranged in the upper barrel body and the lower barrel body, theupper pipe box is communicated with the upper space through the pipeline in the upper barrel body, the lower pipe box is communicated with the lower space through the pipeline in the lower barrel body, and the side walls of th