The stainless steel plate heat exchanger is mainly composed of a frame and a plate. The frame is composed of a fixed compression plate, a movable compression plate, upper and lower guide rods, and clamping bolts. The plate is made of various materials by using abrasive tools to form corrugations with different shapes, and corner holes are opened in the four corners of the plate. It is mainly used for the flow channel of the medium. The perimeter of the plate and the corner holes are sealed with rubber gaskets. The stainless steel plate heat exchanger is formed by stacking plates in the middle of a fixed compression plate and a movable compression plate, and then clamping them with clamping bolts. What are the disadvantages of stainless steel plate heat exchangers?
(1) The heat exchanger plate is thin and has low pressure bearing capacity. For heat exchangers where the contact points between the corrugated plates are mutually supportive, if the age is long and the compression size exceeds the size required for installation, the contact points are easily pressed into pits to form perforations and the plates are scrapped.
(2) The distance between the plates is narrow, the liquid film is thin, and the evaporation speed is fast. If high-temperature steam and liquid materials are used as heat and cold media for heat exchange, the sealing gasket between steaming and coking accelerating plates is likely to be damaged when the material is suddenly cut off. The coking material will cause the cold material passage between the plates to be blocked, affecting the use of the equipment and causing loss to production.
(3) The pressure loss per unit length is large. Because the gap between the heat transfer surfaces is small and the heat transfer surfaces have irregularities, the pressure loss is greater than that of a conventional smooth tube.