Strukturen och principen för rostfritt stålhalar rörled

1. The basic structure of this joint is relatively simple, consisting of only three basic parts: the joint body, the ferrule and the nut. The main part is the ferrule, which is a metal ring with a cutting edge at the front end. The international standard GB3764-83 recommends that the cutting edge be unified as an I-type shape.
2. The ferrule, which plays the main sealing role in this joint, moves axially along the inner tapered hole of the joint body under the axial action of the nut R force that plays a compression role. At the same time, the cutting edge end produces radial contraction under the radial action of the reaction force R', eliminating the gap between the ferrule and the pipe, and making the cutting edge contact the pipe surface. At this time, the pipe no longer rotates, and the nut continues to rotate so that the ferrule cutting edge firmly cuts into the pipe to ensure sealing. Another sealing link is that the intersection line (edge) of the 13℃chamfer of the ferrule cutting edge end and the outer garden is tightly in contact with the annular conical surface of the joint body to form a sealing belt, which is the main part of the ferrule seal. The 86℃cone surface at the end of the ferrule contracts radially under the action of force F, tightly hugging the connected pipe. At the same time, the middle part is slightly arched, so the ferrule has axial elastic deformation, which is beneficial to the sealing of the ferrule and preventing the locking nut from lossna .