Flange connections of chemical technology equipment and pipelines

The subject of the research is most common type detachable joints in chemical, petrochemical, oil refining, food and energy machine apparatus construction, namely flanged technological auxiliary equipment, as well pipelines.
 study state issue trends development structural design based on a critical analysis scientific technical sources information and, above all, patent leading countries world, since it documentation that given about innovative developments relevant field engineering technology.
 With help methods synthesis, flange connections affect efficiency operation equipment pipelines chemical related fields technology have been systematized. A thorough classification has developed for each device, which interesting designs proposed by scientists, designers inventors world's examined detail. assessment constructions provided, their advantages disadvantages are discussed. Preference to from end second beginning third millennium.
 were analyzed depending degree assembly, mobility elements, possibility removing flanges without dismantling entire joint, mechanism compression sealing gasket, presence additional functions, material flanges.
 It shown that, despite considerable variety connections, demanded industry flat welded butt-welded flanges, free ring. However, thanks advances materials science computer modelling, search new connection continues.
 detailed can be useful developers creation highly efficient various industries.