Plate heat exchangers are widely used in life, not only for ice storage systems, air conditioners, but also for pressure blockers in high-rise buildings, but plate heat exchangers are prone to scale after a period of use.Then It must clean it on time.What problems will arise when plate heat exchanger cleaning?
(1) Because the industrial water calcium and magnesium ions are relatively high, the scale of the industrial water surface of the plate heat exchanger is relatively hard under high temperature. If the iron brush is used to brush, the plates the work intensity of the worker is increased, and the plates are often scratches, it is easier to scale after brushing; the cleaning effect is not great.
(2) The heat exchanger must be disassembled during cleaning. It is easy to damage the gasket during the disassembly processIt is often the case that the metal plate or gasket is damaged due to over-tightening, or leakage occurs due to insufficient assembly. The leakage of the medium between the metal plates is caused. The continuous casting equipment water is cooled by demineralized water, and the plate heat exchanger often has internal leakage phenomenon. In addition to the salt water being poured into the industrial water, the cost of demineralized water and the spare parts of the plate heat exchanger are increased, and the equipment cost is also increased.
(3) Frequent disassembly of the plate heat exchanger will cause the suspension notches at both ends of the metal plate to be deformed. The deformation at the notch will cause misalignment between the metal plates, so that the metal plate is easily deformed when the water flows through the plate heat exchanger. It will affect the speed of water flow and increase the scale and corrosion of the plate heat exchanger. The plate heat exchanger is a heat exchanger in which a heat exchanger plate having a certain shape is pressed by a thin metal plate (generally stainless steel) and then stacked with a sealing gaskets.