Importance of selection of spare parts for detachable plate heat exchanger

Plate heat exchanger is divided into welding, brazing, plate and shell, etc., because of the detachable plate heat exchanger is easy to disassemble and clean, the heat exchanger area is more flexible, and it is used more in heating engineering. Therefore, the reasonable selection of removable plate heat exchanger spare parts and installation methods, can improve the efficiency of the detachable plate heat exchanger to extend the service life of equipment, to ensure the safe operation of equipment.

1, the choice of spare parts:

Spare parts generally include plate and gasket, plate material can choose Hastelloy alloy, stainless steel, titanium alloy, etc.. Thermal properties of stainless steel, thermal conductivity of about 14.4W/ (M - K), high strength, stamping performance is good, not easy to be oxidized, the price ratio of titanium alloy is low, the most use of the heating project, but its ability to resist chloride ion corrosion difference. The design thickness of the plate has nothing to do with its corrosion resistance, which is related to the pressure bearing ability of the heat exchanger. The thickness of the plate can improve the bearing capacity of the heat exchanger. The herringbone plate combination, adjacent plates mutually inverted, corrugated contact with each other, forming a high density and uniform distribution of the fulcrum, the plate angle and edge seal alone L structure has been gradually improved, the heat exchanger has good bearing capacity. The maximum bearing capacity of the domestic detachable plate heat exchanger has reached 2.5MPa. The thickness of the plate has great influence on the heat transfer coefficient, thickness of 0.1mm, the total heat transfer coefficient of symmetric plate type heat exchanger is increased by about 600W/ (M - K), asymmetric increases about 500W/ (M - K). In order to meet the pressure bearing capacity of the heat exchanger, we should try to choose a smaller plate thickness.

Sealing gasket is made of raw materials which are provided by internationally renowned manufacturers, and has a long service life. In the hot and cold fluid between the two seal, the middle of the leak area. Regardless of whether the internal seal of the cold fluid or the hot fluid is damaged, the leaked fluid flows through the leak area from the leak hole of the specially designed sealing gasket to the outside world without mixing with each other. The convex section of the unique design makes the whole plate group stuck to each other when clamping, so as to avoid the dislocation and greatly enhance the sealing performance.

2, gasket installation method:

The installation is divided into three ways: adhesive, embedded and hanging buckle type.