Plate heat exchanger plates are divided into unilateral flow and diagonal flow according to the flow form of the heat exchange medium. Correspondingly, plate heat exchanger sealing gaskets are divided into unilateral flow and diagonal flow according to the flow form of the heat exchange medium.
Unilateral flow means that the heat exchange medium flowing in from the right corner hole of the heat exchange plate finally flows out from the right corner hole. Similarly, the heat exchange medium flowing in from the left corner hole finally flows out from the left corner hole.
Diagonal flow means that the heat exchange fluid flows from the right corner hole and then flows out from the left corner hole, or the fluid flowing in from the left corner hole flows out from the right corner hole, presenting a diagonal flow pattern.
In terms of heat exchange efficiency, the diagonal flow method is better than the unilateral flow method, but the cost of using the unilateral flow method is relatively low, so when the heat exchange efficiency can be met, the unilateral flow method is generally used.
glued type
After applying sealant on the sealing gasket, stick it directly into the installation groove of the heat exchange plate.
Glue nail inlay
The heat exchange plate is designed with an assembly hole, and a glue nail is designed on the edge of the sealing gasket. After the sealing gasket is placed in the installation groove, the glue nail is embedded in the assembly hole.
Glued free
A buckle nail is designed on the edge of the sealing gasket, and the sealing gasket is buckled on the heat exchange plate with the buckle nail.
Among the above three methods, the adhesive sealing gasket has a simple structure and is the easiest to process, but the installation and removal are relatively troublesome. The inlay and buckle sealing gaskets have complex structures and are more troublesome to process, but they are relatively easy to install and remove. Plate heat exchanger sealing gaskets are divided into symmetrical and asymmetrical shapes according to the cross-sectional shape of the product. The symmetrical shape is generally used for diagonal flow plates. The upper and lower sealing surfaces are both flat, symmetrical along the horizontal plane, and can be installed in both directions. The ground of the asymmetrical shape is flat, and the upper sealing surface can be flat, curved, inclined, etc.