A novel carbon fiber protofilament high-pressure steam draw machine

A novel carbon fiber protofilament high-pressure steam draw machine is provided. The machine comprises a drawing tank body and labyrinth seal box bodies. The drawing tank body is provided with slits through which tows pass. The inner bottom of the drawing tank body is provided with a low-pressure steam feeding pipeline. A porous distributing plate is disposed above the low-pressure steam feeding pipeline. The inlet end and the outlet end of the drawing tank body are respectively provided with the labyrinth seal box bodies. An upper labyrinth seal structure and a lower labyrinth seal structure are disposed in each of the labyrinth seal box bodies. A gap is formed between the corresponding upper and lower labyrinth seal structures to form a tow passing path. The machine is high in drawing rate, low in fiber fracture, high in tow passing rate, good in pressure keeping performance, and capable of effectively improving degrees of orientation and crystallinity of protofilaments, and is a critical device for prepari