What is the stiffness of plate heat exchanger plates

The stiffness of the plate heat exchanger plate refers to the ability of the plate to deform against the effect of the medium with different pressures on both sides under the clamping effect of the fixed compression plate and the interactive compression plate after the plate is assembled according to the requirements. Under normal working conditions, in addition to sufficient strength, the plate also needs stiffness to control the gradual deformation of the plate.

Let the heat exchange medium run evenly in the liquid layer in the plate channel to ensure the heat exchange efficiency. According to the working principle of thermal expansion and contraction, the main reason for the expansion or contraction of the plate is the increase or decrease of the temperature in the equipment, but the expansion or contraction of the plate is also affected by the fixed compression plate and the movable compression plate. Two layers of constraints.

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When the thermal expansion and contraction of the heat exchanger cannot be carried out freely, stress will occur, which requires that the heat transfer plate should have sufficient rigidity and pressure resistance. Therefore, the stiffness of the heat exchanger plate depends not only on the density and accuracy of the position of the support point, but also on the thickness, length, width and other factors of the plate.

In short, the plate heat exchanger should be selected strictly according to the use requirements of plate stiffness, so as to better ensure the use efficiency and quality of the equipment, thereby effectively prolonging its service life.