The plate heat exchanger is an important accessory on the refrigeration host. It is composed of a group of corrugated metal plates with four corner holes for the two heat transfer liquids to pass through. They are closely arranged, high precision, small size, high heat exchange efficiency and save space. Plate heat exchangers are widely used in metallurgy, petroleum, chemical, food, pharmaceutical, marine, textile, papermaking. It is an excellent device for heating, cooling, heat recovery, and rapid sterilization. So what is the production and manufacturing process of plate heat exchanger plates?
(1) Design of plate shunt area. Even the widest plate can make the fluid fully and evenly distributed in all corners of the plate, and minimize the pressure loss in the split area.
All the heat exchange areas of the plates participate in efficient heat exchange, and all the physical areas of the plates are converted into effective heat exchange areas. There are no heat exchange dead zones and no flow dead spots. It is not easy to cause fouling, and chloride corrosion caused by fouling is not easy to occur. It can make full use of the allowable pressure drop, increase the flow rate of the convection heat exchange part, and improve the overall heat exchange efficiency.
(2) Single-side flow design of plates. The whole plate heat exchanger uses only one type of plate, which is easier to piping, easier to install and maintain, and reduces the types and number of plates and rubber pads.
(3) The corrugation angles of the plates are H and L. Optimize the combination of heat exchanger plates to maximize the heat transfer coefficient and reduce the cost of equipment
(4) The heat exchanger plates are stamped at one time. The corrugation depth of a plate is the same, so as to ensure that each contact point between the plates is well connected, and there is no excessive punching area on the plate and hidden cracks are generated. The height of the metal lines on the plate is the same, and the thinnest plate can reach 0.3mm. In this way, the bearing capacity of the plate is enhanced, and thermal stress fatigue is avoided. It can avoid mechanical fatigue corrosion caused by oscillation and high-frequency shaking. The plate has better mechanical properties and avoids leakage caused by hidden cracks.The uniform distribution of the contact points makes the medium and turbulent flow strengthen, maximize the heat transfer efficiency, reduce the weight of the equipment, and obtain a higher heat transfer coefficient under the requirements of ensuring the pressure.