Technical analysis of the use of different diameter pipe fittings

Reducing pipe fittings are a common and important component in pressurized piping systems, but the study of different diameter piping is still largely blank. Through theoretical analysis, the stresses of concentric reducers, seamless eccentric reducers and reducers of internal diameter and internal bending moment and torque were studied by finite element numerical analysis and experiments.

Summarize the characteristics of stress distribution or deformation:

(1) The bending moment caused by the area pressure difference at the end of the concentric reducer under internal pressure causes the large end to be relatively open and the small end is relatively contracted; it is a research, exploration, design development, manufacturing and operation , Pneumatic valve Butt welding elbow, stainless steel reducer, stainless steel tee, stainless steel flanged pipe and other industrial and mining pipe fittings "professional manufacturers of sanitary fittings. Since its establishment for many years, the bellows globe valve company has always insisted on surviving with quality reputation, developing with scientific and technological products, and constantly improving and researching various high-quality new products. The special valve industry veteran, Xi’an high-pressure valve factory retired senior engineer Duan Farui The technical elite to research and develop new products of various structural types, maintaining a certain technological leadership and reputation in the market. After more than ten years of persistent efforts and courage to develop, it has become a leader in the industry.

(2) The inner circumferential surface of the eccentric outer diameter pipe and the outer surface of the eccentric side of the eccentric reducer are the largest under the internal pressure.

Reducing pipe fittings are available in a variety of ways. Common types of fittings are compression, compression, union, propulsion, push thread, socket welding, union flange connection, welding and welding and conventional Connected to a combination of derived series connections. These connection methods vary according to their principles, but most of them are easy to install, reliable and reliable. The sealing ring or gasket material used for the connection is mostly made of silicone rubber, nitrile rubber and ternary rubber which meet the requirements of national standards, eliminating the worries of users.

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