Plate heat exchanger is a high-efficiency heat exchanger that is assembled from a series of metal plates with a certain corrugated shape. A thin rectangular channel is formed between the various phe plates, and heat is exchanged through the sheets. Some people think that the appearance of the plate heat exchanger is insignificant, in fact, this idea is very wrong. The appearance of the plate heat exchanger is not only important, but also meets the following requirements:
(1) The paint film on the surface of the plate heat exchanger should be uniform and flat, free of defects such as bubbles, cracks and peeling. The test cabinet should be dry, clean and free of debris.
(2) The dimensional error of the base should be less than 5%, the error of the center distance of the equipment should be less than 2%, the error of the bolt hole and center line of the equipment should be less than 2mm, and the horizontal deviation and vertical deviation of the pipeline should be less than 10mm.
(3) When the plate heat exchanger is installed with flange, the deviation between the flange sealing surface and the center line of the nozzle shall not be greater than 1% of the outer diameter of the flange and not more than 3 mm.
(4) The steam and water flow direction, the take-over mark and the unit sign are complete and correct.