The phe plate is the core of the plate heat exchanger, and the heat exchange efficiency, fluid resistance and pressure bearing capacity of different forms of corrugated plates are also different. Currently most commonly used are herringbone corrugated sheets and horizontal flat corrugated sheets. Because of the complicated cross-section of the flow passage between the herringbone corrugated plates, turbulence is easy to occur.The plate has high heat exchange efficiency, large fluid resistance and high pressure bearing capacity. It is found that the size of the angle of the horn has a significant influence on the heat transfer efficiency and fluid resistance. The angle of the horn is large, the heat exchange efficiency is high, and the fluid resistance is large. It is a plate with a high a value (thermodynamic length); the angle of the human character is small. Both heat exchange efficiency and fluid resistance are low, and it is a plate having a low value of zero. The positioning of the plate is generally determined by the contact of the 5-point metal with the guide bar. The 3 points of the upper guide can prevent the plate from moving up and down; at 2 o'clock of the lower guide, the plate will not move left and right. With 5 points of positioning, the plate group can be easily slid back and forth on the guide bar, which makes the gasket seal accurate and does not cause plate misalignment.