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Commercial refrigeration refrigeration pipeline installation
commercial refrigeration refrigeration pipeline installation
commercial refrigeration installation of refrigeration pipelines and valves Assembled or bulk refrigeration equipment components such as compressors, condensers, evaporators, expansion valves and other auxiliary equipment are installed , You can start installing refrigeration pipes and valves. The assembly pipeline includes refrigeration pipeline, cooling water pipeline, chilled water pipeline, etc. Here is an introduction to the installation of commercial refrigeration refrigeration pipes.
commercial refrigeration selection of refrigeration piping and valves
(1) 10# and 20# high-quality carbon steel seamless steel pipes should be used for general ammonia refrigeration system piping, and low-temperature alloy steel pipes should be used for operating temperatures below -40°C. Seamless steel pipes are characterized by uniform texture, high strength, easy processing, smooth inner wall, and replacing copper with steel can save a lot of non-ferrous metals. Seamless steel pipes are divided into thin and thick walls.
(2) The bending radius of the ammonia tube should be 3.5-4D (D is the outer diameter of the tube), and the ellipticity should not be greater than 8%. Welded elbows (shrimp bends) and fold elbows are not allowed.
(3) When making the two-way, the branch pipe should be bent to 90℃ according to the flow direction of the medium. The arc is connected to the main pipe. When the branch pipe and the main pipe have the same diameter and the inner diameter of the pipe is less than 50 mm, it is necessary to weld the thousand pipe with a pipe section one size larger in diameter according to the above regulations.
(4) The valves used in ammonia pipelines and freon pipelines are all dedicated commercial refrigeration valves. Valves for ammonia and freon should be selected respectively. Safety valves, pressure gauges, etc. are also dedicated.
(5) Ammonia pipe flange adopts pn=2.5MPa concave-convex flat welding square or waist flange.
(6) When the pipe diameter of the Freon refrigeration system is less than 20 mm, copper pipes are generally used: seamless steel pipes are used for pipe diameters above 25 mm.
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